147 results on '"Tomohiro Nakao"'
Search Results
2. Association between retinopathy and risk of dementia in a general Japanese population: the Hisayama Study
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Shun Nakamura, Emi Ueda, Tomoyuki Ohara, Jun Hata, Takanori Honda, Kohta Fujiwara, Yoshihiko Furuta, Mao Shibata, Sawako Hashimoto, Taro Nakazawa, Tomohiro Nakao, Takanari Kitazono, Koh-Hei Sonoda, and Toshiharu Ninomiya
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Medicine ,Science - Abstract
Abstract We investigated the association of retinopathy with the risk of dementia in a general older Japanese population. A total of 1709 population-based residents aged 60 years or older without dementia were followed prospectively for 10 years (2007–2017). They underwent color fundus photography in 2007. Retinopathy was graded according to the Modified Airlie House Classification. Main outcome was the Incidence of dementia. A Cox proportional hazards model was used to estimate the hazard ratios (HRs) and their 95% confidence intervals (CIs) for the risk of dementia by the presence of retinopathy. During the follow-up period, 374 participants developed all-cause dementia. The cumulative incidence of dementia was significantly higher in those with retinopathy than those without (p
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- 2024
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3. Reduced resting-state functional connectivity between insula and inferior frontal gyrus and superior temporal gyrus in hoarding disorder
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Kenta Kato, Hirofumi Tomiyama, Keitaro Murayama, Taro Mizobe, Akira Matsuo, Nami Nishida, Kou Matukuma, Mingi Kang, Kenta Sashikata, Kazufumi Kikuchi, Osamu Togao, and Tomohiro Nakao
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hoarding disorder ,resting-state ,functional connectivity ,seed-based analysis ,cognitive control ,Psychiatry ,RC435-571 - Abstract
BackgroundHoarding disorder (HD) is characterized by cognitive control impairments and abnormal brain activity in the insula and anterior cingulate cortex (ACC) during disposal of personal items or certain executive function tasks. However, whether there are any changes in resting-state functional connectivity of the insula and ACC remains unclear.MethodsA total of 55 subjects, including 24 patients with HD and 31 healthy controls (HCs), participated in the study. We acquired resting-state functional magnetic resonance imaging data and examined group differences in functional connectivity from the insula and ACC in whole-brain voxels.ResultsIn patients with HD, functional connectivity was significantly lower between the right insula and right inferior frontal gyrus (IFG) and left superior temporal gyrus (STG) compared to HCs. There was no correlation between these connectivities and HD symptoms.ConclusionsAlthough the clinical implication is uncertain, our results suggest that patients with HD have resting-state functional alterations between the insula and IFG and STG, corresponding with the results of previous fMRI studies. These findings provide new insight into the neurobiological basis of HD.
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- 2024
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4. Angiogenic and inflammatory responses in human induced microglia-like (iMG) cells from patients with Moyamoya disease
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Noritoshi Shirozu, Masahiro Ohgidani, Nobuhiro Hata, Shunya Tanaka, Shogo Inamine, Noriaki Sagata, Tetsuaki Kimura, Ituro Inoue, Koichi Arimura, Akira Nakamizo, Ataru Nishimura, Naoki Maehara, Soh Takagishi, Katsuma Iwaki, Tomohiro Nakao, Keiji Masuda, Yasunari Sakai, Masahiro Mizoguchi, Koji Yoshimoto, and Takahiro A. Kato
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Medicine ,Science - Abstract
Abstract Angiogenic factors associated with Moyamoya disease (MMD) are overexpressed in M2 polarized microglia in ischemic stroke, suggesting that microglia may be involved in the pathophysiology of MMD; however, existing approaches are not applicable to explore this hypothesis. Herein we applied blood induced microglial-like (iMG) cells. We recruited 25 adult patients with MMD and 24 healthy volunteers. Patients with MMD were subdivided into progressive (N = 7) or stable (N = 18) group whether novel symptoms or radiographic advancement of Suzuki stage within 1 year was observed or not. We produced 3 types of iMG cells; resting, M1-, and M2-induced cells from monocytes, then RNA sequencing followed by GO and KEGG pathway enrichment analysis and qPCR assay were performed. RNA sequencing of M2-induced iMG cells revealed that 600 genes were significantly upregulated (338) or downregulated (262) in patients with MMD. Inflammation and immune-related factors and angiogenesis-related factors were specifically associated with MMD in GO analysis. qPCR for MMP9, VEGFA, and TGFB1 expression validated these findings. This study is the first to demonstrate that M2 microglia may be involved in the angiogenic process of MMD. The iMG technique provides a promising approach to explore the bioactivity of microglia in cerebrovascular diseases.
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- 2023
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5. Holiday Internet Usage Time and the Risk of Internet Addiction Tendency among Working Adults in their 30s in Japan
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Keitaro Matsuo, Masaru Tateno, Ryoko Katsuki, Tomohiro Nakao, and Takahiro A. Kato
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depression ,addiction ,Internet addiction ,smartphone addiction ,personality traits ,borderline personality ,Psychiatry ,RC435-571 - Abstract
Introduction: A positive association between Internet usage time and Internet addiction among adolescents and adults has been frequently reported; however, studies of working adults focusing on weekdays and holidays are limited. Therefore, this study aimed to elucidate the association between Internet usage time and psychometric tests among working adults in their 30s, focusing on weekdays and holidays. Methods: A total of 129 workers aged 30–39 years participated in this study. Participants completed a questionnaire and interview regarding psychometric tests, including Internet usage time, Internet addiction tendency, smartphone addiction tendency, depression tendency, and personality traits. A correlation analysis focusing on differences between weekdays and holidays was conducted. Results: The scores on Internet addiction scales are weakly positively correlated with holiday Internet usage time. The scores of smartphone addiction scales are also weakly positively correlated with the holiday Internet time. No correlation was found between weekdays Internet usage time and scores on Internet addiction scales. Conclusions: Internet usage time during holidays is associated with Internet addiction tendency among the working adult samples. Holiday Internet usage time could be a useful indicator of risk of Internet addiction. Our pilot findings provide clues to the mental health affected by the Internet, especially among adults.
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- 2023
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6. Abnormal phase entrainment of low- and high-gamma-band auditory steady-state responses in schizophrenia
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Shoichiro Nakanishi, Shunsuke Tamura, Shogo Hirano, Junichi Takahashi, Kazutoshi Kitajima, Yoshifumi Takai, Takako Mitsudo, Osamu Togao, Tomohiro Nakao, Toshiaki Onitsuka, and Yoji Hirano
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auditory steady-state response (ASSR) ,evoked power ,gamma oscillation ,magnetoencephalography (MEG) ,phase locking angle (PLA) ,phase locking factor (PLF) ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
IntroductionGamma-band oscillatory deficits have attracted considerable attention as promising biomarkers of schizophrenia (SZ). Notably, a reduced auditory steady-state response (ASSR) in the low gamma band (40 Hz) is widely recognized as a robust finding among SZ patients. However, a comprehensive investigation into the potential utility of the high-gamma-band ASSR in detecting altered neural oscillations in SZ has not yet been conducted.MethodsThe present study aimed to assess the ASSR using magnetoencephalography (MEG) data obtained during steady-state stimuli at frequencies of 20, 30, 40, and 80 Hz from 23 SZ patients and 21 healthy controls (HCs). To evaluate the ASSR, we examined the evoked power and phase-locking factor (PLF) in the time-frequency domain for both the primary and secondary auditory cortices. Furthermore, we calculated the phase-locking angle (PLA) to examine oscillatory phase lead or delay in SZ patients. Taking advantage of the high spatial resolution of MEG, we also focused on the hemispheric laterality of low- and high-gamma-band ASSR deficits in SZ.ResultsWe found abnormal phase delay in the 40 Hz ASSR within the bilateral auditory cortex of SZ patients. Regarding the 80 Hz ASSR, our investigation identified an aberrant phase lead in the left secondary auditory cortex in SZ, accompanied by reduced evoked power in both auditory cortices.DiscussionGiven that abnormal phase lead on 80 Hz ASSR exhibited the highest discriminative power between HC and SZ, we propose that the examination of PLA in the 80 Hz ASSR holds significant promise as a robust candidate for identifying neurophysiological endophenotypes associated with SZ. Furthermore, the left-hemisphere phase lead observed in the deficits of 80 Hz PLA aligns with numerous prior studies, which have consistently proposed that SZ is characterized by left-lateralized brain dysfunctions.
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- 2023
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7. Decision-making deficits in obsessive-compulsive disorder are associated with abnormality of recency and response consistency parameter in prospect valence learning model
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Keitaro Murayama, Hirofumi Tomiyama, Aikana Ohno, Kenta Kato, Akira Matsuo, Suguru Hasuzawa, Kenta Sashikata, Mingi Kang, and Tomohiro Nakao
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obsessive-compulsive disorder ,decision-making ,Iowa gambling test ,prospective valence learning model ,consistency parameter ,Psychiatry ,RC435-571 - Abstract
BackgroundPatients with obsessive-compulsive disorder (OCD) have deficits in decision-making in the Iowa Gambling Task (IGT). However, no study has investigated the parameters of the prospect valence learning (PVL) model in the IGT for OCD.AimsThis study aimed to investigate deficits in decision-making in OCD using the PVL model and identify whether the parameters of the PVL model were associated with obsessive-compulsive severity.MethodsForty-seven medication-free patients with OCD were compared with 47 healthy controls (HCs). Decision-making was measured using the total net and block net scores of the IGT. A PVL model with a decay-reinforcement learning rule (PVL-DecayRI) was used to investigate the parameters of the model. Correlation analysis was conducted between each parameter of the PVL-DecayRL and obsessive-compulsive symptoms.ResultsThe total net score of patients with OCD was significantly lower than that of the HCs. The block net scores of the OCD group did not differ across the five blocks, whereas in the HCs, the fifth block net score was significantly higher than the block net scores of the first and second blocks. The values of the recency and response consistency parameters of the PVL-DecayRI in patients with OCD were significantly lower than those in HCs. The recency parameter positively correlated with the Y-BOCS obsessive score. Meanwhile, there was no correlation between consistency parameter values and symptom severity in OCD.ConclusionOur detailed analysis of the decision-making deficit in OCD suggests that the most recent outcome has a small influence on the expectancy of prospect valence, as indicated by the lower recency parameter, and is characterized by more impulsive choices, as indicated by the lower consistency parameter.
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- 2023
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8. Association of serum s-adenosylmethionine, s-adenosylhomocysteine, and their ratio with the risk of dementia and death in a community
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Akane Mihara, Tomoyuki Ohara, Jun Hata, Sanmei Chen, Takanori Honda, Sonam Tamrakar, Akiko Isa, Dongmei Wang, Kuniyoshi Shimizu, Yoshinori Katakura, Koji Yonemoto, Tomohiro Nakao, Takanari Kitazono, and Toshiharu Ninomiya
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Medicine ,Science - Abstract
Abstract We examined the association of serum s-adenosylmethionine (SAM), s-adenosylhomocysteine (SAH) (methionine metabolites), and their ratio on the risk of dementia and death in a community-dwelling population of older Japanese individuals. 1371 residents of Hisayama, Japan, aged 65 years or older and without dementia, were followed for a median of 10.2 years (2007–2017). We divided serum SAM, SAH, and SAM/SAH ratio into quartiles. Cox proportional hazards models were used to estimate the hazard ratios (HRs) and their 95% confidence intervals (CIs) of serum SAM, SAH, and SAM/SAH ratio levels on the risk of a composite outcome of all-cause dementia or death, and each outcome. During the follow-up, 635 participants developed all-cause dementia and/or died, of which 379 participants developed dementia and 394 deaths occurred. The multivariable-adjusted HRs of the composite outcome decreased significantly with increasing serum SAM levels (P for trend = 0.01), while they increased significantly with higher serum SAH levels (P for trend = 0.03). Higher serum SAM/SAH ratio levels were significantly associated with a lower risk of the composite outcome (P for trend = 0.002), as well as with lower risk of each outcome. Our findings suggest that the balance of methionine metabolites may closely associate with the risk of dementia and death.
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- 2022
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9. Effectiveness of psychological first aid in infectious disease pandemics: An overview of systematic reviews
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Masahide Koda, Toru Horinouchi, Nozomu Oya, Morio Aki, Akihisa Iriki, Kazufumi Yoshida, Yusuke Ogawa, Hironori Kuga, and Tomohiro Nakao
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mental health ,pandemic ,psychological first aid ,psychosocial support ,Psychiatry ,RC435-571 - Abstract
Abstract There is insufficient research on the usefulness of psychological interventions, such as psychological first aid (PFA), during outbreaks. We searched for and critically appraised systematic reviews that examined the effectiveness of PFA during infectious disease outbreaks, such as the novel coronavirus disease (COVID‐19). Systematic reviews that examined the efficacy of PFA in the severe acute respiratory syndrome, Middle East respiratory syndrome coronavirus, Ebola virus disease, and COVID‐19 outbreaks were searched through PubMed on February 19, 2021. The three included systematic reviews were critically appraised and assessed using AMSTAR‐2. One review's overall confidence in its findings was evaluated as “high,” which suggested that PFA training had a favorable effect on healthcare personnel. Furthermore, the review also demonstrated that PFA was commonly used during outbreaks and could be delivered through multiple methods, such as a phone or video call. Although it was anticipated that PFA would improve subjective well‐being, reports showed no evidence of reduced depression or insomnia. Future studies should examine additional numbers of PFA recipients and conduct quasi‐experimental studies to better understand the effectiveness of PFA. Evidence on its effectiveness in infectious disease outbreaks is still lacking, along with research and evaluation methods. Quasi‐experimental studies, such as comparisons with other psychological interventions, are required to better understand the effectiveness of PFA.
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- 2023
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10. Survey of psychiatric symptoms among inpatients with COVID-19 using the Diagnosis Procedure Combination data and medical records in Japan
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Tomohiro Nakao, Keitaro Murayama, Haruhisa Fukuda, Nobuaki Eto, Kousuke Fujita, Ryouhei Igata, Kensuke Ishikawa, Shuichi Isomura, Takako Kawaguchi, Megumi Maeda, Hiroshi Mitsuyasu, Fumiko Murata, Tomoyuki Nakamura, Tomoe Nishihara, Ayako Ohashi, Mamoru Sato, Yuji Yoshida, Hiroaki Kawasaki, Motohiro Ozone, Reiji Yoshimura, and Hideharu Tatebayashi
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Patients with COVID-19 ,Diagnosis procedure combination data ,Anxiety ,Insomnia ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Physical symptoms such as fatigue and muscle weakness, and psychiatric symptoms like depression and anxiety are considered as complications and sequelae of COVID-19. This epidemiological study investigated the actual status of psychiatric symptoms and disorders caused by COVID-19, from four major university hospitals and five general hospitals in Fukuoka Prefecture, Japan, having a population of 5 million. We conducted a survey of psychiatric disorders associated with COVID-19 using Diagnosis Procedure Combination (DPC) data and the psychiatric records of the hospitals. In the study period from January 2019 to September 2021, 2743 COVID-19 admissions were determined from DPC data across the nine sites. These subjects had significantly more anxiety, depression, and insomnia, and were receiving higher rates of various psychotropic medications than controls influenza and respiratory infections. A review of psychiatric records revealed that the frequency of organic mental illness with insomnia and confusion was proportional to the severity of COVID-19 infection and that anxiety symptoms appeared independent of infection severity. These results indicate that COVID-19 is more likely to produce psychiatric symptoms such as anxiety and insomnia than conventional infections.
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- 2023
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11. Psychological treatments for the mental health symptoms among individuals infected with COVID-19: a scoping review protocol
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Hironori Kuga, Masaya Ito, Tomohiro Nakao, So Sugita, Kotone Hata, Naoki Takamatsu, Kentaro Kimura, Lecsy Gonzalez, Krandhasi Kodaiarasu, Christian Miller, Ikue Umemoto, Keitaro Murayama, and Shinsuke Kito
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Medicine - Abstract
Introduction Mental health symptoms such as depression, anxiety and sleep problems are commonly observed in individuals suffering from acute COVID-19 infection to post-COVID-19 syndrome. Studies have provided preliminary evidence for the efficacies of cognitive behavioural therapy, mindfulness-based interventions, acceptance and commitment therapy, and many other treatments for this population. Although there have been attempts to synthesise the literature on these psychological interventions, previous reviews have been limited in terms of the sources, symptoms and interventions that they included. Furthermore, most studies reviewed were conducted in early 2020, when COVID-19 had only recently been classified as a global pandemic. Since then, substantial research has been conducted. As such, we sought to provide an updated synthesis of the available evidence of treatments for the range of mental health symptoms associated with COVID-19.Methods and analysis This scoping review protocol was developed according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews. Systematic searches were carried out on scientific databases (PubMed, Web of Science, PsycINFO and Scopus) and clinical trial registries (ClinicalTrials.gov, WHO ICTRP, EU Clinical Trials Register and Cochrane Central Register of Controlled Trials) to identify studies that have or will assess the efficacy or any aspects of psychological treatment for acute to post-COVID-19 syndrome. The search was conducted on 14 October 2022 and identified 17 855 potentially eligible sources/studies published since 1 January 2020 (duplicates removed). Six investigators will independently carry out titles and abstract screening, full-text screening and data charting and the results will be summarised using descriptive statistics and narrative synthesis.Ethics and dissemination Ethical approval is not required for this review. The results will be disseminated through a peer-reviewed journal, conference presentations and/or academic newspapers. This scoping review has been registered with Open Science Framework (https://osf.io/wvr5t).
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- 2023
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12. 3-day intervention program for family members of hikikomori sufferers: A pilot randomized controlled trial
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Hiroaki Kubo, Hiromi Urata, Motohiro Sakai, Shunsuke Nonaka, Junji Kishimoto, Kazuhiko Saito, Masaru Tateno, Keiji Kobara, Daisuke Fujisawa, Naoki Hashimoto, Yuriko Suzuki, Yoko Honda, Tomohiro Nakao, Kotaro Otsuka, Shigenobu Kanba, Toshihide Kuroki, and Takahiro A. Kato
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pathological social withdrawal (hikikomori) ,mental health first aid (MHFA) ,community reinforcement and family training (CRAFT) ,family intervention ,RCT (randomized controlled trial) ,Psychiatry ,RC435-571 - Abstract
BackgroundsHikikomori, pathological social withdrawal, is becoming a crucial mental health issue in Japan and worldwide. We have developed a 3-day family intervention program for hikikomori sufferers based on Mental Health First Aid (MHFA) and Community Reinforcement and Family Training (CRAFT). This study aims to confirm the effectiveness of the 3-day program by a randomized controlled trial.MethodsThis study was registered on the UMIN Clinical Trials Registry (UMIN000037289). Fifteen parents were assigned to the treat as usual (TAU) group (TAU only; Age Mean, 65.6; SD, 7.8), and 14 to the Program group (program + TAU; Age Mean, 67.9; SD, 8.6). This study was discontinued due to the COVID-19 pandemic; the recruitment rate was 36.3% of our target sample size of 80.ResultsPerceived skills improved temporally and stigma temporally worsened in the TAU group. Confidence decreased and attitude showed no change in both groups. Aggressive behaviors of hikikomori sufferers were significantly worsened in the Program group; however, no serious domestic violence was reported. In the TAU group, Avoidance and irregular life patterns were improved. Activity levels were worsened in both groups. Two participants (16.7%) in the Program group and one participant (7.7%) in the TAU group reported actual behavioral changes (e.g., utilizing support).ConclusionWe could not draw general conclusions on the effectiveness of the program due to the study discontinuation. Nevertheless, this study indicates the necessity for revision of the program to improve family members’ confidence in engaging with hikikomori sufferers, with safer approaching by families.
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- 2023
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13. Long-term association of vegetable and fruit intake with risk of dementia in Japanese older adults: the Hisayama study
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Yasumi Kimura, Daigo Yoshida, Tomoyuki Ohara, Jun Hata, Takanori Honda, Yoichiro Hirakawa, Mao Shibata, Emi Oishi, Satoko Sakata, Yoshihiko Furuta, Sanmei Chen, Kazuhiro Uchida, Tomohiro Nakao, Takanari Kitazono, and Toshiharu Ninomiya
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Vegetable intake ,Fruit intake ,Dementia ,Alzheimer’s disease ,Vascular dementia ,Elderly ,Geriatrics ,RC952-954.6 - Abstract
Abstract Background Several prospective Western studies have reported an inverse association of vegetable and fruit intake with dementia risk. However, there is limited epidemiologic evidence in Asians. This study investigated the association of intakes of vegetables, fruits, and their nutrients on the risk of incident dementia and its subtypes in a Japanese community. Methods A total of 1071 participants (452 men and 619 women) aged ≥60 years without dementia at baseline were prospectively followed up for 24 years. Intakes of vegetables, fruits, and nutrients were evaluated using a 70-item semiquantitative food frequency questionnaire at baseline and were categorized into quartiles separately by gender. The outcome measure was the development of dementia and its subtypes—namely, Alzheimer’s disease (AD) and vascular dementia (VaD). The risk estimates of incident dementia were computed using a Cox proportional hazards model. Results During the long-term follow-up period, 464 subjects developed dementia, of whom 286 had AD and 144 had VaD. Higher vegetable intake was associated gradually with lower risk of developing dementia and AD (both P-trend
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- 2022
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14. Decreased BOLD signals elicited by 40-Hz auditory stimulation of the right primary auditory cortex in bipolar disorder: An fMRI study
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Hiroshi Okamoto, Toshiaki Onitsuka, Hironori Kuga, Naoya Oribe, Naho Nakayama, Shou Fukushima, Tomohiro Nakao, and Takefumi Ueno
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bipolar disorder ,mood disorder ,BOLD ,fMRI ,neuroimaging ,clinical neurophysiology ,Psychiatry ,RC435-571 - Abstract
BackgroundA number studies have been conducted on abnormalities in the cortical circuitry of gamma oscillations, including deficit in auditory steady-state response (ASSR) to gamma-frequency (≧ 30-Hz) stimulation, in patients with bipolar disorder (BD). In the current study, we investigated neural responses during click stimulation by blood oxygen level-dependent (BOLD) signals. We focused on Broadman 41 and 42, the main sources of ASSR.Materials and methodsWe acquired BOLD responses elicited by click trains of 80-, 40-, 30- and 20-Hz frequencies from 25 patients with BD to 27 healthy controls (HC) with normal hearing between 22 and 59 years of age assessed via a standard general linear-model-based analysis. We extracted contrast values by identifying the primary auditory cortex and Brodmann areas 41 and 42 as regions of interest (ROI)s.ResultsBD group showed significantly decreased ASSR-BOLD signals in response to 40-Hz stimuli compared to the HC group in the right Brodmann areas 41 and 42. We found significant negative correlations between the BOLD change in the right Brodmann areas 41 and 42 and Structured Interview Guide for the Hamilton Depression Rating Scale (SIGH-D) scores, also the BOLD change in the right Brodmann areas 41 and 42 and the Positive and Negative Syndrome Scale (PANSS)-Negative scores.ConclusionThe observed decrease in BOLD signal patterns in the right primary auditory cortex during 40-Hz ASSR may be a potential biomarker option for bipolar disorder.
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- 2022
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15. Association of Inner Retinal Thickness with Prevalent Dementia and Brain Atrophy in a General Older Population
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Emi Ueda, MD, PhD, Naoki Hirabayashi, MD, PhD, Tomoyuki Ohara, MD, PhD, Jun Hata, MD, PhD, Takanori Honda, PhD, Kohta Fujiwara, MD, PhD, Yoshihiko Furuta, MD, PhD, Mao Shibata, MD, PhD, Sawako Hashimoto, MD, PhD, Shun Nakamura, MD, Taro Nakazawa, MD, Tomohiro Nakao, MD, PhD, Takanari Kitazono, MD, PhD, Toshiharu Ninomiya, MD, PhD, and Koh-Hei Sonoda, MD, PhD
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Alzheimer’s disease ,Brain atrophy ,Dementia ,Ganglion cell-inner plexiform layer ,Population-based study ,Retinal nerve fiber layer ,Ophthalmology ,RE1-994 - Abstract
Purpose: To assess the association of inner retinal thickness with prevalent dementia and regional brain atrophy in a general older population of Japanese. Design: Population-based, cross-sectional study. Participants: A total of 1078 residents aged 65 years or older who participated in an eye examination, a comprehensive survey of dementia, and brain magnetic resonance imaging scanning in 2017. Methods: The thicknesses of the inner retinal layers, namely, the ganglion cell-inner plexiform layer (GC-IPL) and retinal nerve fiber layer (RNFL)—were measured by swept-source OCT (SS-OCT). The association of these retinal thicknesses with the risk of the presence of dementia was estimated using restricted cubic splines and logistic regression models. Regional brain volumes were estimated separately by applying 2 different methods: voxel-based morphometry (VBM) and analysis by FreeSurfer software. The associations of GC-IPL and RNFL thickness with each brain regional volume were analyzed using multiple regression analysis. Main Outcome Measure: Prevalent dementia and regional brain atrophy. Results: Among the study participants, 61 participants (5.7%) were diagnosed with dementia. The likelihood of the presence of dementia significantly increased with lower GC-IPL thickness after adjusting for potential confounders (odds ratio, 1.62 [95% confidence interval, 1.30–2.01] per 1 standard deviation decrement in the GC-IPL thickness), but no significant association was observed with RNFL thickness. In the VBM analyses with the multivariable adjustment, lower GC-IPL thickness was significantly associated with lower volume of known brain regions related to cognitive functions (i.e., the hippocampus, amygdala, entorhinal area, and parahippocampal gyrus) and visual functions (i.e., the cuneus, lingual gyrus, and thalamus). Meanwhile, the volume of the thalamus significantly decreased with lower RNFL thickness, but none of the brain regions related to cognitive function exhibited a volume change in association with RNFL thickness. The sensitivity analysis using FreeSurfer analysis also showed that lower GC-IPL thickness was significantly associated with lower regional brain volume/intracranial volume of the hippocampus, amygdala, cuneus, lingual gyrus, and thalamus. Conclusions: Our findings suggest that the measurement of GC-IPL thickness by SS-OCT, which is a noninvasive, convenient, and reproducible method, might be useful for identifying high-risk individuals with dementia.
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- 2022
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16. Inverse Association Between Resting-State Putamen Activity and Iowa Gambling Task Performance in Patients With Obsessive-Compulsive Disorder and Control Subjects
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Suguru Hasuzawa, Hirofumi Tomiyama, Keitaro Murayama, Aikana Ohno, Mingi Kang, Taro Mizobe, Kenta Kato, Akira Matsuo, Kazufumi Kikuchi, Osamu Togao, and Tomohiro Nakao
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obsessive-compulsive disorder (OCD) ,Iowa Gambling Task (IGT) ,decision-making ,putamen ,resting-state functional MRI ,fractional amplitude of low-frequency fluctuations (fALFF) ,Psychiatry ,RC435-571 - Abstract
BackgroundSymptoms of obsessive-compulsive disorder (OCD) have been conceptualized as manifestations of decision-making deficits. Patients with OCD exhibit impairment during the decision-making process, as assessed by the Iowa Gambling Task (IGT). This impairment is independent of clinical severity and disease progression. However, the association between the decision-making deficit and resting-state brain activity of patients with OCD has not been examined.MethodsFifty unmedicated patients with OCD and 55 matched control subjects completed IGT. Resting-state brain activity was examined using the fractional amplitude of low-frequency fluctuations (fALFFs). fALFF analysis focused on the slow-4 and 5 bands. Group comparisons were performed to determine the association between IGT performance and fALFFs.ResultsThere was a significant group difference in the association between the IGT total net score and slow-4 fALFFs in the left putamen (voxel height threshold of p < 0.001; cluster size threshold of p < 0.05; family wise error-corrected). Higher putamen slow-4 fALFFs were correlated with lower IGT scores for OCD patients (r = −0.485; p < 0.0005) and higher IGT scores for control subjects (r = 0.402; p < 0.005). There was no group difference in the association between the IGT total net score and slow-5 fALFFs.ConclusionsThese findings in unmedicated patients demonstrate the importance of resting-state putamen activity for decision-making deficit associated with OCD, as measured by IGT. The inverse correlation may be explained by the hypersensitive response of the putamen in patients with OCD.
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- 2022
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17. Psychological Traits of Patients With Depression Comorbid With Chronic Pain: Are Complaint and Competitive Tendency Related to Pain?
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Koji Fujimoto, Masako Hosoi, Ryoko Katsuki, Toshio Matsushima, Keitaro Matsuo, Tomohiro Nakao, Nobuyuki Sudo, and Takahiro A. Kato
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depression ,chronic pain ,personality traits ,modern-type depression ,alexithymia ,TACS-22 ,Psychiatry ,RC435-571 - Abstract
BackgroundModern-Type Depression (MTD) is a category of depression that has been studied mainly in Japan; however, no study has attempted to determine its relation to chronic pain.AimTo determine possible associations between psychological traits related to MTD and the chronic pain of patients at psychiatric clinics.MethodTwo hundred and twenty-one first time patients who visited the psychiatric clinic at a Japanese university medical center or an associated clinic were enrolled. The Hamilton Depression Rating Scale was used to measure depressive symptoms. The 22-item Tarumi's Modern-Type Depression Trait Scale (TACS-22), Achievement Motive, and 20-item Toronto Alexithymia Scale were used to assess psychological traits related to depression and chronic pain. The clinical diagnosis of each patient was confirmed by use of the Structured Clinical Interview for DSM-IV Axis I Disorders, administered by experienced specialists. The medians of the psychological traits identified were compared between patients with or without chronic pain. Analysis was also done of patients with Major Depressive Disorder (MDD).ResultOf the 221 patients, 139 had chronic pain. Patients with chronic pain had more severe depressive symptoms, Alexithymia, and high scores for the complaint trait of MTD. Seventy-three of the 221 patients met the criteria for MDD (53 had chronic pain). Patients with MDD comorbid with chronic pain had a higher competitive achievement score, severe depression, and difficulty identifying feelings.ConclusionComplaint and competitive traits were shown to be related to chronic pain in psychiatric settings. Further study will allow us to design multidimensional approach for patients suffering from depression.
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- 2022
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18. Eye Movement Abnormalities in Major Depressive Disorder
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Junichi Takahashi, Yoji Hirano, Kenichiro Miura, Kentaro Morita, Michiko Fujimoto, Hidenaga Yamamori, Yuka Yasuda, Noriko Kudo, Emiko Shishido, Kosuke Okazaki, Tomoko Shiino, Tomohiro Nakao, Kiyoto Kasai, Ryota Hashimoto, and Toshiaki Onitsuka
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major depressive disorder ,free-viewing test ,fixation stability test and smooth pursuit test ,alerted aging effect ,discriminant analysis ,eye movements ,Psychiatry ,RC435-571 - Abstract
Background: Despite their high lifetime prevalence, major depressive disorder (MDD) is often difficult to diagnose, and there is a need for useful biomarkers for the diagnosis of MDD. Eye movements are considered a non-invasive potential biomarker for the diagnosis of psychiatric disorders such as schizophrenia. However, eye movement deficits in MDD remain unclear. Thus, we evaluated detailed eye movement measurements to validate its usefulness as a biomarker in MDD.Methods: Eye movements were recorded from 37 patients with MDD and 400 healthy controls (HCs) using the same system at five University hospitals. We administered free-viewing, fixation stability, and smooth pursuit tests, and obtained 35 eye movement measurements. We performed analyses of covariance with group as an independent variable and age as a covariate. In 4 out of 35 measurements with significant group-by-age interactions, we evaluated aging effects. Discriminant analysis and receiver operating characteristic (ROC) analysis were conducted.Results: In the free-viewing test, scanpath length was significantly shorter in MDD (p = 4.2 × 10−3). In the smooth pursuit test, duration of saccades was significantly shorter and peak saccade velocity was significantly lower in MDD (p = 3.7 × 10−3, p = 3.9 × 10−3, respectively). In the fixation stability test, there were no significant group differences. There were significant group differences in the older cohort, but not in the younger cohort, for the number of fixations, duration of fixation, number of saccades, and fixation density in the free-viewing test. A discriminant analysis using scanpath length in the free-viewing test and peak saccade velocity in the smooth pursuit showed MDD could be distinguished from HCs with 72.1% accuracy. In the ROC analysis, the area under the curve was 0.76 (standard error = 0.05, p = 1.2 × 10−7, 95% confidence interval = 0.67–0.85).Conclusion: These results suggest that detailed eye movement tests can assist in differentiating MDD from HCs, especially in older subjects.
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- 2021
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19. Aberrant Resting-State Cerebellar-Cerebral Functional Connectivity in Unmedicated Patients With Obsessive-Compulsive Disorder
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Keitaro Murayama, Hirofumi Tomiyama, Sae Tsuruta, Aikana Ohono, Mingi Kang, Suguru Hasuzawa, Taro Mizobe, Kenta Kato, Osamu Togao, Akio Hiwatashi, and Tomohiro Nakao
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obsessive-compulsive disorder ,cerebellum ,functional connectivity ,default-mode network ,precuneus ,Psychiatry ,RC435-571 - Abstract
Background: Although abnormality of cerebellar-cerebral functional connectivity at rest in obsessive-compulsive disorder (OCD) has been hypothesized, only a few studies have investigated the neural mechanism. To verify the findings of previous studies, a large sample of patients with OCD was studied because OCD shows possible heterogeneity.Methods: Forty-seven medication-free patients with OCD and 62 healthy controls (HCs) underwent resting-state functional magnetic imaging scans. Seed-based connectivity was examined to investigate differences in cerebellar-cerebral functional connectivity in OCD patients compared with HCs. Correlations between functional connectivity and the severity of obsessive-compulsive symptoms were analyzed.Results: In OCD, we found significantly increased functional connectivity between the right lobule VI and the left precuneus, which is a component of the default mode network (DMN), compared to HCs. However, there was no correlation between the connectivity of the right lobule VI-left precuneus and obsessive-compulsive severity.Conclusions: These findings suggest that altered functional connectivity between the cerebellum and DMN might cause changes in intrinsic large-scale brain networks related to the traits of OCD.
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- 2021
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20. Relevance of hoarding behavior and the traits of developmental disorders among university students: a self-reported assessment study
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Kosuke Kajitani, Rikako Tsuchimoto, Jun Nagano, and Tomohiro Nakao
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Hoarding behavior ,ADHD ,Autism spectrum disorder ,University students ,CIR ,ASRS ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Abstract Background Previous studies have shown that hoarding behavior usually starts at a subclinical level in early adolescence and gradually worsens; however, a limited number of studies have examined the prevalence of hoarding behavior and its association with developmental disorders in young adults. The aims of this study were to estimate the prevalence of hoarding behavior and to identify correlations between hoarding behavior and developmental disorder traits in university students. Methods The study participants included 801 university students (616 men, 185 women) who completed questionnaires (ASRS: Adult ADHD Self-Report Scale version 1.1, AQ16: Autism-Spectrum Quotient with 16 items, and CIR: Clutter Image Rating). Results Among 801 participants, 27 (3.4%) exceeded the CIR cut-off score. Moreover, the participants with hoarding behavior had a significantly higher percentage of ADHD traits compared to participants without hoarding behavior (HB(+) vs HB(−), 40.7% vs 21.7%). In addition, 7.4% of HB(+) participants had autism spectrum disorder (ASD) traits, compared to 4.1% of HB(−) participants. A correlation analysis revealed that the CIR composite score had a stronger correlation with the ASRS inattentive score than with the hyperactivity/impulsivity score (CIR composite vs ASRS IA, r = 0.283; CIR composite vs ASRS H/I, r = 0.147). Conclusions The results showed a high prevalence of ADHD traits in the university students with hoarding behavior. Moreover, we found that the hoarding behavior was more strongly correlated with inattentive symptoms rather than with hyperactivity/impulsivity symptoms. Our results support the concept of a common pathophysiology behind hoarding behavior and ADHD in young adults.
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- 2019
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21. Development of a dementia prediction model for primary care: The Hisayama Study
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Takanori Honda, Tomoyuki Ohara, Daigo Yoshida, Mao Shibata, Yuki Ishida, Yoshihiko Furuta, Emi Oishi, Yoichiro Hirakawa, Satoko Sakata, Jun Hata, Tomohiro Nakao, and Toshiharu Ninomiya
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dementia ,general population ,primary prevention ,prospective study ,risk prediction model ,Neurology. Diseases of the nervous system ,RC346-429 ,Geriatrics ,RC952-954.6 - Abstract
Abstract Introduction We aimed to develop a risk prediction model for incident dementia using predictors that are available in primary‐care settings. Methods A total of 795 subjects aged 65 years or over were prospectively followed‐up from 1988 to 2012. A Cox proportional‐hazards regression was used to develop a multivariable prediction model. The developed model was translated into a simplified scoring system based on the beta‐coefficient. The discrimination of the model was assessed by Harrell's C statistic, and the calibration was assessed by a calibration plot. Results During the follow‐up period, 364 subjects developed dementia. In the multivariable model, age, female sex, low education, leanness, hypertension, diabetes, history of stroke, current smoking, and sedentariness were selected as predictors. The developed model and simplified score showed good discrimination and calibration. Discussion The developed risk prediction model is feasible and practically useful in primary‐care settings to identify individuals at high risk for future dementia.
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- 2021
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22. Impacts of Stressful Life Events and Traumatic Experiences on Onset of Obsessive-Compulsive Disorder
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Keitaro Murayama, Tomohiro Nakao, Aikana Ohno, Sae Tsuruta, Hirofumi Tomiyama, Suguru Hasuzawa, Taro Mizobe, Kenta Kato, and Shigenobu Kanba
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type of symptoms ,onset ,traumatic experiences ,stressful life events ,obsessive-compulsive disorder (OCD) ,Psychiatry ,RC435-571 - Abstract
Not a few patients with obsessive-compulsive disorder (OCD) have experienced events that affected the onset. The onset of OCD is not limited to the original meaning of trauma; rather, traumatic experiences such as unexpected exposure to contaminants or various stressful life events often cause the onset of OCD. It would be useful to understand the experiences surrounding the onset, including stressful life events and traumatic experiences, for comprehension of the pathophysiology of OCD. In the present study, we investigated the onset conditions of 281 patients with OCD and compared clinical characteristics among groups with or without stressful life events including traumatic experiences. As a result, 172 (61.2%) participants had experienced various stressful life events, and 98 (34%) participants had had traumatic experiences before the onset. Furthermore, the participants who had had stressful life events showed more contamination/fear symptoms compared with those without such life events. Meanwhile, the patients who had had specific traumatic experiences showed a tendency toward hoarding obsessions. To comprehend the pathophysiology of OCD, it is important to understand the stressful life events that precede its onset.
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- 2020
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23. Low-Density Lipoprotein Cholesterol Is a Possible Blood Biomarker of Schizoid Personality Traits among Females
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Kohei Hayakawa, Motoki Watabe, Hideki Horikawa, Mina Sato-Kasai, Norihiro Shimokawa, Tomohiro Nakao, and Takahiro A. Kato
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schizoid personality disorder ,schizophrenia ,low-density lipoprotein cholesterol (LDL-C) ,loneliness ,solitude ,social isolation ,Medicine - Abstract
Lower serum levels of low-density lipoprotein cholesterol (LDL-C) have been suggested to indicate higher suicide risk and various psychiatric symptoms. Previously, we reported that lower serum LDL-C levels are associated with loneliness, social phobia, isolated life with little social support, and lower trust in others among young non-clinical females. Thus, we hypothesize that schizoid personality traits may be associated with lower serum LDL-C. We here verified this hypothesis using non-clinical data and clinical data with schizophrenia. Using the database from the Midlife in Japan (MIDJA), a cohort of residents living in Tokyo, we analyzed whether schizoid-related interpersonal characteristics were associated with LDL-C. In addition, we assessed the association between blood biomarkers including LDL-C and schizoid personality traits in 101 adult non-clinical volunteers. Finally, we evaluated the interaction between LDL-C and social decision making of patients with schizophrenia. In female non-clinical volunteers, serum LDL-C level was a predictive factor and negatively correlated with schizoid personality traits. Female patients with schizophrenia, whose serum LDL-C levels were lower, tended not to trust other females. The present findings suggest that LDL-C may influence schizoid personality traits in females, which provide a basis for further investigation into the biological aspects of schizoid personality disorder.
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- 2022
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24. Neurophysiological Face Processing Deficits in Patients With Chronic Schizophrenia: An MEG Study
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Naotoshi Ohara, Yoji Hirano, Naoya Oribe, Shunsuke Tamura, Itta Nakamura, Shogo Hirano, Rikako Tsuchimoto, Takefumi Ueno, Osamu Togao, Akio Hiwatashi, Tomohiro Nakao, and Toshiaki Onitsuka
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schizophrenia ,magnetoencephalography ,M170 ,human faces ,fusiform gyrus ,Psychiatry ,RC435-571 - Abstract
BackgroundNeuropsychological studies have revealed that patients with schizophrenia (SZ) have facial recognition difficulties and a reduced visual evoked N170 response to human faces. However, detailed neurophysiological evidence of this face processing deficit in SZ with a higher spatial resolution has yet to be acquired. In this study, we recorded visual evoked magnetoencephalography (MEG) and examined whether M170 (a magnetic counterpart of the N170) activity deficits are specific to faces in patients with chronic SZ.MethodsParticipants were 26 patients with SZ and 26 healthy controls (HC). The M170 responses to faces and cars were recorded from whole-head MEG, and global field power over each temporal cortex was analyzed. The distributed M170 sources were also localized using a minimum-norm estimation (MNE) method. Correlational analyses between M170 responses and demographics/symptoms were performed.ResultsAs expected, the M170 was significantly smaller in the SZ compared with the HC group in response to faces, but not to cars (faces: p = 0.01; cars: p = 0.55). The MNE analysis demonstrated that while the M170 was localized over the fusiform face area (FFA) in the HC group, visual-related brain regions other than the FFA were strongly activated in the SZ group in both stimulus conditions. The severity of negative symptoms was negatively correlated with M170 power (rho = −0.47, p = 0.01) in SZ. Within HC, there was a significant correlation between age and the M170 responses to faces averaged for both hemispheres (rho = 0.60, p = 0.001), while such a relationship was not observed in patients with SZ (rho = 0.09, p = 0.67).ConclusionThe present study showed specific reductions in the M170 response to human faces in patients with SZ. Our findings could suggest that SZ is characterized by face processing deficits that are associated with the severity of negative symptoms. Thus, we suggest that social cognition impairments in SZ might, at least in part, be caused by this functional face processing deficit.
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- 2020
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25. Clinical characteristics of hoarding disorder in Japanese patients
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Masumi Kuwano, Tomohiro Nakao, Koji Yonemoto, Satoshi Yamada, Keitaro Murayama, Kayo Okada, Shinichi Honda, Keisuke Ikari, Hirofumi Tomiyama, Suguru Hasuzawa, and Shigenobu Kanba
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Public health ,Psychiatry ,Health sciences ,Clinical research ,Diagnostics ,Hoarding disorder ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Previous studies have reported clinical characteristics of hoarding disorder (HD), such as early onset, a chronic course, familiality, high unmarried rate, and high rates of comorbidities. However, clinical research targeting Japanese HD patients has been very limited. As a result, there is a low recognition of HD in Japan, leading to insufficient evaluation and treatment of Japanese HD patients.The aim of the current study was to delineate the clinical characteristics of Japanese HD patients. Thirty HD patients, 20 obsessive-compulsive disorder (OCD) patients, and 21 normal controls (NC) were targeted in this study.The HD group had a tendency toward higher familiality, earlier onset, and longer disease duration compared to the OCD group. In addition, the HD group showed a significantly higher unmarried rate than the NC group. The top two comorbidities in the HD group were major depressive disorder (56.7%) and attention-deficit/hyperactivity disorder (26.7%). The HD group had significantly higher scores on hoarding rating scales and lower scores on the Global Assessment of Functioning Scale than the other two groups.The current study showed a clinical trend in Japanese HD patients similar to previous studies in various countries, suggesting that HD may be a universal disease with consistent clinical symptoms.
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- 2020
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26. A voxel-based analysis of cerebral blood flow abnormalities in obsessive-compulsive disorder using pseudo-continuous arterial spin labeling MRI.
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Daichi Momosaka, Osamu Togao, Akio Hiwatashi, Koji Yamashita, Kazufumi Kikuchi, Hirofumi Tomiyama, Tomohiro Nakao, Keitaro Murayama, Yuriko Suzuki, and Hiroshi Honda
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Medicine ,Science - Abstract
ObjectiveTo identify abnormalities of regional cerebral blood flow (rCBF) in individuals with obsessive-compulsive disorder (OCD) by conducting a voxel-based analysis of pseudo-continuous arterial spin labeling (pCASL) perfusion images.Materials and methodsThis prospective study included 23 OCD patients (nine males, 14 females; age 21-62 years; mean ± SD 37.2 ± 10.7 years) diagnosed based on DSM-IV-TR criteria and 64 healthy controls (27 males, 37 females; age 20-64 years; mean ± SD 38.3 ± 12.8 years). Subjects were recruited from October 2011 to August 2017. Imaging was performed on a 3T scanner. Quantitative rCBF maps generated from pCASL images were co-registered and resliced with the three-dimensional T1-weighted images, and then spatially normalized to a brain template and smoothed. We used statistical nonparametric mapping to assess the differences in rCBF and gray matter volume between the OCD and control groups. The significance level was set at the p-value ResultsCompared to the control group, there were significant rCBF reductions in the right putamen, right frontal operculum, left midcingulate cortex, and right temporal pole in the OCD group. There were no significant between-group differences in the gray matter volume.ConclusionThe pCASL imaging noninvasively detected physiologically disrupted areas without structural abnormalities in OCD patients. The rCBF reductions observed in these regions in OCD patients could be associated with the pathophysiology of OCD.
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- 2020
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27. Biologically-inspired adaptive routing protocol with stochastic route exploration
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Tomohiro Nakao, Jun-nosuke Teramae, and Naoki Wakamiya
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distributed routing ,attractor selection ,stochastic exploration ,a short-term memory ,Telecommunication ,TK5101-6720 - Abstract
Rapid increase in amount of traffic and the number of users of information communication networks requires adaptive routing protocols that can properly respond to unexpected change of communication environment such as rapid and large fluctuation of traffic. While distributed routing protocols that use only local state of the network have been expected to suitable for adaptive routing on large scale net- work, the lack of global information of the network often makes it difficult to promptly respond to traffic changes of the network when it occurs at out of the local scope. In this paper, based on the biologically-inspired attractor selection model, we propose a distributed routing protocol with active and stochastic route exploration. Acquiring current state of the network beyond its local scope by utilizing stochastic nature of the protocol, the routing protocol can efficiently respond to rapid change of traffic demand on the network. In order to avoid destabilization of routings due to the exploration, we introduce a short-term memory term to the governing equation of the protocol. We also confirm that the protocol successfully balances rapid exploration with stable routing owing to the memory term by numerical simulations.
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- 2016
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28. An Empirical Comparison of Meta- and Mega-Analysis With Data From the ENIGMA Obsessive-Compulsive Disorder Working Group
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Premika S. W. Boedhoe, Martijn W. Heymans, Lianne Schmaal, Yoshinari Abe, Pino Alonso, Stephanie H. Ameis, Alan Anticevic, Paul D. Arnold, Marcelo C. Batistuzzo, Francesco Benedetti, Jan C. Beucke, Irene Bollettini, Anushree Bose, Silvia Brem, Anna Calvo, Rosa Calvo, Yuqi Cheng, Kang Ik K. Cho, Valentina Ciullo, Sara Dallaspezia, Damiaan Denys, Jamie D. Feusner, Kate D. Fitzgerald, Jean-Paul Fouche, Egill A. Fridgeirsson, Patricia Gruner, Gregory L. Hanna, Derrek P. Hibar, Marcelo Q. Hoexter, Hao Hu, Chaim Huyser, Neda Jahanshad, Anthony James, Norbert Kathmann, Christian Kaufmann, Kathrin Koch, Jun Soo Kwon, Luisa Lazaro, Christine Lochner, Rachel Marsh, Ignacio Martínez-Zalacaín, David Mataix-Cols, José M. Menchón, Luciano Minuzzi, Astrid Morer, Takashi Nakamae, Tomohiro Nakao, Janardhanan C. Narayanaswamy, Seiji Nishida, Erika L. Nurmi, Joseph O'Neill, John Piacentini, Fabrizio Piras, Federica Piras, Y. C. Janardhan Reddy, Tim J. Reess, Yuki Sakai, Joao R. Sato, H. Blair Simpson, Noam Soreni, Carles Soriano-Mas, Gianfranco Spalletta, Michael C. Stevens, Philip R. Szeszko, David F. Tolin, Guido A. van Wingen, Ganesan Venkatasubramanian, Susanne Walitza, Zhen Wang, Je-Yeon Yun, ENIGMA-OCD Working-Group, Paul M. Thompson, Dan J. Stein, Odile A. van den Heuvel, and Jos W. R. Twisk
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neuroimaging ,MRI ,IPD meta-analysis ,mega-analysis ,linear mixed-effect models ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Objective: Brain imaging communities focusing on different diseases have increasingly started to collaborate and to pool data to perform well-powered meta- and mega-analyses. Some methodologists claim that a one-stage individual-participant data (IPD) mega-analysis can be superior to a two-stage aggregated data meta-analysis, since more detailed computations can be performed in a mega-analysis. Before definitive conclusions regarding the performance of either method can be drawn, it is necessary to critically evaluate the methodology of, and results obtained by, meta- and mega-analyses.Methods: Here, we compare the inverse variance weighted random-effect meta-analysis model with a multiple linear regression mega-analysis model, as well as with a linear mixed-effects random-intercept mega-analysis model, using data from 38 cohorts including 3,665 participants of the ENIGMA-OCD consortium. We assessed the effect sizes and standard errors, and the fit of the models, to evaluate the performance of the different methods.Results: The mega-analytical models showed lower standard errors and narrower confidence intervals than the meta-analysis. Similar standard errors and confidence intervals were found for the linear regression and linear mixed-effects random-intercept models. Moreover, the linear mixed-effects random-intercept models showed better fit indices compared to linear regression mega-analytical models.Conclusions: Our findings indicate that results obtained by meta- and mega-analysis differ, in favor of the latter. In multi-center studies with a moderate amount of variation between cohorts, a linear mixed-effects random-intercept mega-analytical framework appears to be the better approach to investigate structural neuroimaging data.
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- 2019
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29. Dysfunction between dorsal caudate and salience network associated with impaired cognitive flexibility in obsessive-compulsive disorder: A resting-state fMRI study
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Hirofumi Tomiyama, Tomohiro Nakao, Keitaro Murayama, Kiyotaka Nemoto, Keisuke Ikari, Satoshi Yamada, Masumi Kuwano, Suguru Hasuzawa, Osamu Togao, Akio Hiwatashi, and Shigenobu Kanba
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Computer applications to medicine. Medical informatics ,R858-859.7 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Background: Impaired cognitive flexibility has been implicated in the genetic basis of obsessive-compulsive disorder (OCD). Recent endophenotype studies of OCD showed neural inefficiency in the cognitive control network and interference by the limbic network of the cognitive control network. Exploring the relationship between the functional brain network and impaired cognitive flexibility may provide novel information about the neurobiological basis of OCD. Methods: We obtained resting-state functional magnetic resonance imaging (rsfMRI) scans and measured the cognitive flexibility of 37 medication-free OCD patients and 40 healthy control (HC) participants using the Wisconsin Card Sorting Test (WCST). We explored the difference between OCD and HC groups in the functional brain network related to impaired cognitive flexibility from the amygdala and dorsal striatal regions of interest (ROIs) by using a seed-based approach. Results: Significant differences between the OCD and HC groups were identified in the resting state functional network from the dorsal caudate. Increased functional connectivity from the dorsal caudate to the dorsal anterior cingulate cortex (dACC) and anterior insula (AI) was associated with poorer cognitive flexibility in the OCD group, but better cognitive flexibility in the HC group. Conclusions: These results provide evidence that the impaired cognitive flexibility of OCD may be associated with dysfunctions of the brain network from the dorsal caudate (DC) to important nodes of the salience network. Our results extend the neuropsychological model of OCD by showing intrinsically different associations between OCD and HC in functional network and cognitive flexibility. Keywords: Obsessive-compulsive disorder, Cognitive flexibility, Salience network, Dorsal caudate, Functional connectivity, Resting state functional MRI
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- 2019
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30. Lower Hippocampal Volume in Patients with Schizophrenia and Bipolar Disorder: A Quantitative MRI Study
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Jinya Sato, Yoji Hirano, Noriaki Hirakawa, Junichi Takahashi, Naoya Oribe, Hironori Kuga, Itta Nakamura, Shogo Hirano, Takefumi Ueno, Osamu Togao, Akio Hiwatashi, Tomohiro Nakao, and Toshiaki Onitsuka
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schizophrenia ,bipolar disorder ,MRI ,hippocampus ,volume reduction ,Medicine - Abstract
Since patients with schizophrenia (SZ) and bipolar disorder (BD) share many biological features, detecting biomarkers that differentiate SZ and BD patients is crucial for optimized treatments. High-resolution magnetic resonance imaging (MRI) is suitable for detecting subtle brain structural differences in patients with psychiatric disorders. In the present study, we adopted a neuroanatomically defined and manually delineated region of interest (ROI) method to evaluate the amygdalae, hippocampi, Heschl’s gyrus (HG), and planum temporale (PT), because these regions are crucial in the development of SZ and BD. ROI volumes were measured using high resolution MRI in 31 healthy subjects (HS), 23 SZ patients, and 21 BD patients. Right hippocampal volumes differed significantly among groups (HS > BD > SZ), whereas left hippocampal volumes were lower in SZ patients than in HS and BD patients (HS = BD > SZ). Volumes of the amygdalae, HG, and PT did not differ among the three groups. For clinical correlations, there were no significant associations between ROI volumes and demographics/clinical symptoms. Our study revealed significant lower hippocampal volume in patients with SZ and BD, and we suggest that the right hippocampal volume is a potential biomarker for differentiation between SZ and BD.
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- 2021
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31. A unique increase in prefrontal gray matter volume in hoarding disorder compared to obsessive-compulsive disorder.
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Satoshi Yamada, Tomohiro Nakao, Keisuke Ikari, Masumi Kuwano, Keitaro Murayama, Hirofumi Tomiyama, Suguru Hasuzawa, Osamu Togao, Akio Hiwatashi, and Shigenobu Kanba
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Medicine ,Science - Abstract
BACKGROUND:Hoarding disorder (HD) is a disease concept newly presented in DSM-5. As far as we know, no studies have examined the structural changes relevant to hoarding by applying the diagnostic criteria of HD in DSM-5. In the present study, we aimed to find abnormalities in gray matter (GM) structures of patients with HD. METHODS:Seventeen patients who met the DSM-5 criteria for HD, 17 obsessive-compulsive disorder (OCD) patients, and 17 healthy controls (HCs) participated in this study. All participants underwent MRI scanning of the brain by a 3.0-Tesla MRI scanner. In a voxel-based morphometric procedure, preprocessed GM structural images were used to compare the three groups. Thereafter we investigated the correlation between the clinical data (age of onset, symptomatic severity) and GM volume. RESULTS:The HD group showed a significantly increased GM volume compared to the OCD and healthy control groups (p
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- 2018
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32. Decision-making deficits in obsessive-compulsive disorder are associated with abnormality of recency and response consistency parameter in prospect valence learning model.
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Keitaro Murayama, Hirofumi Tomiyama, Aikana Ohno, Kenta Kato, Akira Matsuo, Suguru Hasuzawa, Kenta Sashikata, Mingi Kang, and Tomohiro Nakao
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OBSESSIVE-compulsive disorder ,DECISION making ,GAMBLING ,STATISTICAL correlation ,HUMAN abnormalities - Abstract
Background: Patients with obsessive-compulsive disorder (OCD) have deficits in decision-making in the Iowa Gambling Task (IGT). However, no study has investigated the parameters of the prospect valence learning (PVL) model in the IGT for OCD. Aims: This study aimed to investigate deficits in decision-making inOCD using the PVLmodel and identify whether the parameters of the PVLmodel were associated with obsessive-compulsive severity. Methods: Forty-seven medication-free patients with OCD were compared with 47 healthy controls (HCs). Decision-making was measured using the total net and block net scores of the IGT. A PVL model with a decay-reinforcement learning rule (PVL-DecayRI) was used to investigate the parameters of the model. Correlation analysis was conducted between each parameter of the PVL-DecayRL and obsessive-compulsive symptoms. Results: The total net score of patients with OCD was significantly lower than that of the HCs. The block net scores of the OCD group did not differ across the five blocks, whereas in the HCs, the fifth block net score was significantly higher than the block net scores of the first and second blocks. The values of the recency and response consistency parameters of the PVL-DecayRI in patients with OCD were significantly lower than those in HCs. The recency parameter positively correlated with the Y-BOCS obsessive score. Meanwhile, there was no correlation between consistency parameter values and symptom severity in OCD. Conclusion: Our detailed analysis of the decision-making deficit in OCD suggests that themost recent outcome has a small influence on the expectancy of prospect valence, as indicated by the lower recency parameter, and is characterized by more impulsive choices, as indicated by the lower consistency parameter. [ABSTRACT FROM AUTHOR]
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- 2024
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33. Associations of medication with subcortical morphology across the lifespan in OCD: Results from the international ENIGMA Consortium
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Iliyan Ivanov, Premika S.W. Boedhoe, Yoshinari Abe, Pino Alonso, Stephanie H. Ameis, Paul D. Arnold, Srinivas Balachander, Justin T. Baker, Nerisa Banaj, Nuria Bargalló, Marcelo C. Batistuzzo, Francesco Benedetti, Jan C. Beucke, Irene Bollettini, Silvia Brem, Brian P. Brennan, Jan Buitelaar, Rosa Calvo, Yuqi Cheng, Kang Ik K. Cho, Sara Dallaspezia, Damiaan Denys, Juliana B. Diniz, Benjamin A. Ely, Jamie D. Feusner, Sónia Ferreira, Kate D. Fitzgerald, Martine Fontaine, Patricia Gruner, Gregory L. Hanna, Yoshiyuki Hirano, Marcelo Q. Hoexter, Chaim Huyser, Keisuke Ikari, Anthony James, Fern Jaspers-Fayer, Hongyan Jiang, Norbert Kathmann, Christian Kaufmann, Minah Kim, Kathrin Koch, Jun Soo Kwon, Luisa Lázaro, Yanni Liu, Christine Lochner, Rachel Marsh, Ignacio Martínez-Zalacaín, David Mataix-Cols, José M. Menchón, Luciano Minuzzi, Astrid Morer, Pedro Morgado, Akiko Nakagawa, Takashi Nakamae, Tomohiro Nakao, Janardhanan C. Narayanaswamy, Erika L. Nurmi, Sanghoon Oh, Chris Perriello, John C. Piacentini, Maria Picó-Pérez, Fabrizio Piras, Federica Piras, Y.C. Janardhan Reddy, Daniela Rodriguez Manrique, Yuki Sakai, Eiji Shimizu, H. Blair Simpson, Noam Soreni, Carles Soriano-Mas, Gianfranco Spalletta, Emily R. Stern, Michael C. Stevens, S. Evelyn Stewart, Philip R. Szeszko, David F. Tolin, Daan van Rooij, Dick J. Veltman, Ysbrand D. van der Werf, Guido A. van Wingen, Ganesan Venkatasubramanian, Susanne Walitza, Zhen Wang, Anri Watanabe, Lidewij H. Wolters, Xiufeng Xu, Je-Yeon Yun, Mojtaba Zarei, Fengrui Zhang, Qing Zhao, Neda Jahanshad, Sophia I. Thomopoulos, Paul M. Thompson, Dan J. Stein, Odile A. van den Heuvel, Joseph O'Neill, Sara Poletti, Egill Axfjord Fridgeirsson, Toshikazu Ikuta, Stella J. de Wit, Chris Vriend, Selina Kasprzak, Masaru Kuno, Jumpei Takahashi, Euripedes C. Miguel, Roseli G. Shavitt, Morgan Hough, Jose C. Pariente, Ana E. Ortiz, Sara Bertolín, Eva Real, Cinto Segalàs, Pedro Silva Moreira, Nuno Sousa, Jin Narumoto, Kei Yamada, Jinsong Tang, Jean-Paul Fouche, Taekwan Kim, Sunah Choi, Minji Ha, Sunghyun Park, Anatomy and neurosciences, Psychiatry, Amsterdam Neuroscience - Brain Imaging, Amsterdam Neuroscience - Mood, Anxiety, Psychosis, Stress & Sleep, Amsterdam Neuroscience - Compulsivity, Impulsivity & Attention, Amsterdam Neuroscience - Systems & Network Neuroscience, Amsterdam Neuroscience - Neurodegeneration, Adult Psychiatry, Child Psychiatry, Paediatric Psychosocial Care, Amsterdam Neuroscience - Cellular & Molecular Mechanisms, Graduate School, Ivanov, Iliyan, Boedhoe, Premika S W, Abe, Yoshinari, Alonso, Pino, Ameis, Stephanie H, Arnold, Paul D, Balachander, Sriniva, Baker, Justin T, Banaj, Nerisa, Bargalló, Nuria, Batistuzzo, Marcelo C, Benedetti, Francesco, Beucke, Jan C, Bollettini, Irene, Brem, Silvia, Brennan, Brian P, Buitelaar, Jan, Calvo, Rosa, Cheng, Yuqi, Cho, Kang Ik K, Dallaspezia, Sara, Denys, Damiaan, Diniz, Juliana B, Ely, Benjamin A, Feusner, Jamie D, Ferreira, Sónia, Fitzgerald, Kate D, Fontaine, Martine, Gruner, Patricia, Hanna, Gregory L, Hirano, Yoshiyuki, Hoexter, Marcelo Q, Huyser, Chaim, Ikari, Keisuke, James, Anthony, Jaspers-Fayer, Fern, Jiang, Hongyan, Kathmann, Norbert, Kaufmann, Christian, Kim, Minah, Koch, Kathrin, Kwon, Jun Soo, Lázaro, Luisa, Liu, Yanni, Lochner, Christine, Marsh, Rachel, Martínez-Zalacaín, Ignacio, Mataix-Cols, David, Menchón, José M, Minuzzi, Luciano, Morer, Astrid, Morgado, Pedro, Nakagawa, Akiko, Nakamae, Takashi, Nakao, Tomohiro, Narayanaswamy, Janardhanan C, Nurmi, Erika L, Oh, Sanghoon, Perriello, Chri, Piacentini, John C, Picó-Pérez, Maria, Piras, Fabrizio, Piras, Federica, Reddy, Y C Janardhan, Manrique, Daniela Rodriguez, Sakai, Yuki, Shimizu, Eiji, Simpson, H Blair, Soreni, Noam, Soriano-Mas, Carle, Spalletta, Gianfranco, Stern, Emily R, Stevens, Michael C, Stewart, S Evelyn, Szeszko, Philip R, Tolin, David F, van Rooij, Daan, Veltman, Dick J, van der Werf, Ysbrand D, van Wingen, Guido A, Venkatasubramanian, Ganesan, Walitza, Susanne, Wang, Zhen, Watanabe, Anri, Wolters, Lidewij H, Xu, Xiufeng, Yun, Je-Yeon, Zarei, Mojtaba, Zhang, Fengrui, Zhao, Qing, Jahanshad, Neda, Thomopoulos, Sophia I, Thompson, Paul M, Stein, Dan J, van den Heuvel, Odile A, and O'Neill, Joseph
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Obsessive-Compulsive Disorder ,Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7] ,OCD ,Psychotropics ,Longevity ,SRIs ,Magnetic Resonance Imaging ,Benzodiazepines ,Psychiatry and Mental health ,Clinical Psychology ,Age ,Cross-Sectional Studies ,Subcortical volumes ,130 000 Cognitive Neurology & Memory ,Child, Preschool ,Serotonin Uptake Inhibitors ,Humans ,Child ,Selective Serotonin Reuptake Inhibitors ,Aged ,Antipsychotic Agents - Abstract
Background: Widely used psychotropic medications for obsessive-compulsive disorder (OCD) may change the volumes of subcortical brain structures, and differently in children vs. adults. We measured subcortical volumes cross-sectionally in patients finely stratified for age taking various common classes of OCD drugs. Methods: The ENIGMA-OCD consortium sample (1081 medicated/1159 unmedicated OCD patients and 2057 healthy controls aged 6–65) was divided into six successive 6–10-year age-groups. Individual structural MRIs were parcellated automatically using FreeSurfer into 8 regions-of-interest (ROIs). ROI volumes were compared between unmedicated and medicated patients and controls, and between patients taking serotonin reuptake inhibitors (SRIs), tricyclics (TCs), antipsychotics (APs), or benzodiazepines (BZs) and unmedicated patients. Results: Compared to unmedicated patients, volumes of accumbens, caudate, and/or putamen were lower in children aged 6–13 and adults aged 50–65 with OCD taking SRIs (Cohen's d = −0.24 to −0.74). Volumes of putamen, pallidum (d = 0.18–0.40), and ventricles (d = 0.31–0.66) were greater in patients aged 20–29 receiving APs. Hippocampal volumes were smaller in patients aged 20 and older taking TCs and/or BZs (d = −0.27 to −1.31). Conclusions: Results suggest that TCs and BZs could potentially aggravate hippocampal atrophy of normal aging in older adults with OCD, whereas SRIs may reduce striatal volumes in young children and older adults. Similar to patients with psychotic disorders, OCD patients aged 20–29 may experience subcortical nuclear and ventricular hypertrophy in relation to APs. Although cross-sectional, present results suggest that commonly prescribed agents exert macroscopic effects on subcortical nuclei of unknown relation to therapeutic response.
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- 2022
34. Gyrification of the medial and lateral orbitofrontal cortex in first-degree relatives of patients with obsessive-compulsive disorder
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Hirofumi Tomiyama, Keitaro Murayama, Kiyotaka Nemoto, Kenta Kato, Akira Matsuo, Aikana Ohno, Mingi Kang, Osamu Togao, Kousei Ishigami, and Tomohiro Nakao
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Cellular and Molecular Neuroscience ,Cognitive Neuroscience - Abstract
Gyrification patterns reflect early neurodevelopment and could be highly heritable. While some discrepant results have been reported, the most consistent finding was that patients with obsessive-compulsive disorder showed altered gyrification patterns in the orbitofrontal cortex. Nevertheless, no study has investigated the alterations in gyrification in unaffected first-degree relatives of patients with obsessive-compulsive disorder. We measured local gyrification by the FreeSurfer software in 23 unaffected first-degree relatives of patients with obsessive-compulsive disorder and 52 healthy control participants. We explored differences in the local gyrification index using vertex-wise whole-brain analysis and a region of interest-based approach in the medial and lateral orbitofrontal cortex. There was no significant difference in the local gyrification index between the 2 groups in the vertex-wise whole-brain analysis. Region of interest analyses showed that, compared with healthy controls, first-degree relatives showed significantly reduced local gyrification index in the left medial and lateral orbitofrontal cortex. A negative correlation was observed between the reduced local gyrification index in lateral orbitofrontal cortex and the subclinical anxiety scores of first-degree relatives. Our results showed that first-degree relatives of patients with obsessive-compulsive disorder had an altered local gyrification index in the orbitofrontal cortex. Especially, reduced local gyrification index in lateral orbitofrontal cortex associated with subclinical anxiety symptom could be a potential neurodevelopmental marker for the illness onset.
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- 2023
35. Biologically-inspired adaptive routing protocol with stochastic route exploration.
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Tomohiro Nakao, Jun-nosuke Teramae, and Naoki Wakamiya
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- 2015
36. Abnormal white matter structure in hoarding disorder
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Taro, Mizobe, Keisuke, Ikari, Hirofumi, Tomiyama, Keitaro, Murayama, Kenta, Kato, Suguru, Hasuzawa, Osamu, Togao, Akio, Hiwatashi, and Tomohiro, Nakao
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Psychiatry and Mental health ,Diffusion Magnetic Resonance Imaging ,Diffusion Tensor Imaging ,Hoarding Disorder ,Anisotropy ,Brain ,Humans ,White Matter ,Biological Psychiatry - Abstract
Although preliminary neuroimaging research suggests that patients with hoarding disorder (HD) show widespread abnormal task-related activity in the brain, there has been no research on alterations in the white matter tracts in these patients. The aim of this study was to investigate the characteristics of the major white matter tracts in patients with HD. Tract-based spatial statistics were used to search for white matter tract abnormalities throughout the brain in 25 patients with HD and 36 healthy controls. Post hoc analysis of regions of interest was performed to detect correlations with clinical features. Compared with the controls, patients with HD showed decreased fractional anisotropy and increased radial diffusivity in anatomically widespread white matter tracts. Post hoc analysis of regions of interest revealed a significant negative correlation between the severity of hoarding symptoms and fractional anisotropy in the left anterior limb of the internal capsule and a positive correlation between the severity of these symptoms and radial diffusivity in the right anterior thalamic radiation. Patients with HD showed a broad range of alterations in the frontal white matter tracts, including the frontothalamic circuit, frontoparietal network, and frontolimbic pathway. The findings of this study indicate associations between frontal white matter abnormalities related to the severity of hoarding symptoms in HD and the cortical regions involved in cognitive dysfunction. The insights provided would be useful for understanding the neurobiological basis of HD.
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- 2022
37. Functional connectivity between pre-supplementary motor area and inferior parietal lobule associated with impaired motor response inhibition in first-degree relatives of patients with obsessive-compulsive disorder
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Hirofumi Tomiyama, Keitaro Murayama, Kiyotaka Nemoto, Mayumi Tomita, Kenta Kato, Akira Matsuo, Aikana Ohno, Mingi Kang, Osamu Togao, Kousei Ishigami, and Tomohiro Nakao
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Cellular and Molecular Neuroscience ,Cognitive Neuroscience - Abstract
Previous studies have suggested that specific fronto-striatal circuits are associated with impaired motor response inhibition in patients with obsessive-compulsive disorder (OCD) and their relatives. However, no study has investigated the underlying resting-state network associated with motor response inhibition in the unaffected first-degree relatives of patients with OCD. We measured motor response inhibition using stop-signal task, and obtained resting-state fMRI in 23 first-degree relatives and 52 healthy control participants. We explored the group differences in the functional network from seed regions-of-interest (ROIs) associated with motor response inhibition abilities. We used the inferior frontal gyrus (IFG) and pre-supplementary motor area (pre-SMA) as seed-ROIs. A significant group difference was observed in functional connectivity between the pre-SMA and inferior parietal lobule. In the relative group, reduced functional connectivity between these areas was associated with a longer stop-signal reaction time. Additionally, relatives showed significantly greater functional connectivity between the IFG and SMA, precentral, and postcentral areas. Our results could provide new insights into the resting-state neural activity of the pre-SMA underlying impaired motor response inhibition of unaffected first-degree relatives. In addition, our results suggested that relatives have an altered connectivity of the sensorimotor region, similar to that of patients with OCD shown in previous literature.
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- 2023
38. Association of white matter lesions and brain atrophy with the development of dementia in a community: the Hisayama Study
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Taro Nakazawa, Tomoyuki Ohara, Naoki Hirabayashi, Yoshihiko Furuta, Jun Hata, Mao Shibata, Takanori Honda, Takanari Kitazono, Tomohiro Nakao, and Toshiharu Ninomiya
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Psychiatry and Mental health ,Neurology ,General Neuroscience ,Neurology (clinical) ,General Medicine - Published
- 2023
39. Normative Modeling of Brain Morphometry Across the Lifespan using CentileBrain: Algorithm Benchmarking and Model Optimization
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Ruiyang Ge, Yuetong Yu, Yi Xuan Qi, Yunan Vera Fan, Shiyu Chen, Chuntong Gao, Shalaila S Haas, Amirhossein Modabbernia, Faye New, Ingrid Agartz, Philip Asherson, Rosa Ayesa-Arriola, Nerisa Banaj, Tobias Banaschewski, Sarah Baumeister, Alessandro Bertolino, Dorret I Boomsma, Stefan Borgwardt, Josiane Bourque, Daniel Brandeis, Alan Breier, Henry Brodaty, Rachel M Brouwer, Randy Buckner, Jan K Buitelaar, Dara M Cannon, Xavier Caseras, Simon Cervenka, Patricia J Conrod, Benedicto Crespo-Facorro, Fabrice Crivello, Eveline A Crone, Liewe de Haan, Greig I de Zubicaray, Annabella Di Giorgio, Susanne Erk, Simon E Fisher, Barbara Franke, Thomas Frodl, David C Glahn, Dominik Grotegerd, Oliver Gruber, Patricia Gruner, Raquel E Gur, Ruben C Gur, Ben J Harrison, Sean N Hatton, Ian Hickie, Fleur M Howells, Hilleke E Hulshoff Pol, Chaim Huyser, Terry L Jernigan, Jiyang Jiang, John A Joska, Rene S Kahn, Andrew J Kalnin, Nicole A Kochan, Sanne Koops, Jonna Kuntsi, Jim Lagopoulos, Luisa Lazaro, Irina S Lebedeva, Christine Lochner, Nicholas G Martin, Bernard Mazoyer, Brenna C McDonald, Colm McDonald, Katie L McMahon, Tomohiro Nakao, Lars Nyberg, Fabrizio Piras, Maria J Portella, Jiang Qiu, Joshua L Roffman, Perminder S Sachdev, Nicole Sanford, Andrew J Saykin, Theodore D Satterthwaite, Sophia I Thomopolous, Carl M Sellgren, Kang Sim, Jordan W Smoller, Jair Soares, Iris E Sommer, Gianfranco Spalletta, Dan J Stein, Christian K Tamnes, Alexander S Tomyshev, Theo GM van Erp, Diana Tordesillas-Gutierrez, Julian N Trollor, Dennis van 't Ent, Odile A van den Heuvel, Neeltje EM van Haren, Daniela Vecchio, Dick J Veltman, Dongtao Wei, Henrik Walter, Yang Wang, Bernd Weber, Margaret J Wright, Wei Wen, Lars T Westlye, Lara M Wierenga, Paul M Thompson, Steven CR Williams, Sarah Medland, Mon-Ju Wu, Kevin Yu, Neda Jahanshad, and Sophia Frangou
- Abstract
Background: Normative modeling is a statistical approach to quantify the degree to which a particular individual-level measure deviates from the pattern observed in a normative reference population. When applied to human brain morphometric measures it has the potential to inform about the significance of normative deviations for health and disease. Normative models can be implemented using a variety of algorithms that have not been systematically appraised. Methods: To address this gap, eight algorithms were compared in terms of performance and computational efficiency using brain regional morphometric data from 37,407 healthy individuals (53% female; aged 3-90 years) collated from 87 international MRI datasets. Performance was assessed with the mean absolute error (MAE) and computational efficiency was inferred from central processing unit (CPU) time. The algorithms evaluated were Ordinary Least Squares Regression (OLSR), Bayesian Linear Regression (BLR), Generalized Additive Models for Location, Scale, and Shape (GAMLSS), Parametric Lambda, Mu, Sigma (LMS), Gaussian Process Regression (GPR), Warped Bayesian Linear Regression (WBLG), Hierarchical Bayesian Regression (HBR), and Multivariable Fractional Polynomial Regression (MFPR). Model optimization involved testing nine covariate combinations pertaining to acquisition features, parcellation software versions, and global neuroimaging measures (i.e., total intracranial volume, mean cortical thickness, and mean cortical surface area). Findings: Statistical comparisons across models at PFDR
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- 2023
40. An Adaptive Routing Protocol with Balanced Stochastic Route Exploration and Stabilization Based on Short-Term Memory.
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Tomohiro Nakao, Jun-nosuke Teramae, and Naoki Wakamiya
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- 2016
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41. Distributed Routing Protocol Based on Biologically-Inspired Attractor Selection with Active Stochastic Exploration and a Short-Term Memory.
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Tomohiro Nakao, Jun-nosuke Teramae, and Naoki Wakamiya
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- 2014
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42. Cortical thickness across the lifespan
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Simon E. Fisher, Eveline A. Crone, Dominik Grotegerd, Jilly Naaijen, Anders M. Dale, Sean N. Hatton, Ramona Baur-Streubel, Anthony A. James, Daniel Brandeis, Andrew J. Kalnin, Andreas Reif, Hans-Jörgen Grabe, Pieter J. Hoekstra, Lars Nyberg, Fleur M. Howells, Moji Aghajani, Randy L. Buckner, Daniel A. Rinker, Steven G. Potkin, Dennis van 't Ent, Rachel M. Brouwer, Sophia Frangou, Yang Wang, Nhat Trung Doan, Theodore D. Satterthwaite, Christine Lochner, Geraldo F. Busatto, Lars T. Westlye, Lara M. Wierenga, Calhoun Vd, Henry Brodaty, Carles Soriano-Mas, Annette Conzelmann, Christian K. Tamnes, Julian N. Trollor, Nicholas G. Martin, Neeltje E.M. van Haren, René S. Kahn, Irina Lebedeva, Philip Asherson, Suzanne C. Swagerman, John A. Joska, Theophilus N. Akudjedu, Kang Sim, Lachlan T. Strike, Patricia Gruner, Brenna C. McDonald, Thomas Frodl, Edith Pomarol-Clotet, Víctor Ortiz-García de la Foz, Margaret J. Wright, Norbert Hosten, Jean-Paul Fouche, Bernd Weber, Salvador Sarró, Wei Wen, Dag Alnæs, Greig I. de Zubicaray, Iris E. C. Sommer, Marise W. J. Machielsen, Knut Schnell, Dara M. Cannon, Paola Fuentes-Claramonte, Josiane Bourque, Andreas Meyer-Lindenberg, Anton Albajes-Eizagirre, Sarah Hohmann, Erin W. Dickie, Theo G.M. van Erp, Micael Andersson, Paul Pauli, Thomas Espeseth, Heather C. Whalley, Victoria Chubar, Ruben C. Gur, Tomohiro Nakao, Xavier Caseras, Alessandro Bertolino, Ignacio Martínez-Zalacaín, Katharina Wittfeld, Erick J. Canales-Rodríguez, David C. Glahn, Neda Jahanshad, Jiyang Jiang, Katie L. McMahon, Stefan Borgwardt, Erlend S. Dørum, Jaap Oosterlaan, Won Hee Lee, Alan Breier, Steven Williams, Aristotle N. Voineskos, Bernard Mazoyer, Jordan W. Smoller, Nancy C. Andreasen, Ilya M. Veer, Tiffany M. Chaim-Avancini, Sophie Maingault, Paul M. Thompson, Eco J. C. de Geus, Luisa Lázaro, Giulio Pergola, Efstathios Papachristou, Beng-Choon Ho, David Mataix-Cols, Esther Walton, Ben J. Harrison, Dirk J. Heslenfeld, Pablo Najt, Helena Fatouros-Bergman, Derrek P. Hibar, Gunter Schumann, Raymond Salvador, Lieuwe de Haan, Henry Völzke, Joaquim Radua, Henk Temmingh, Lianne Schmaal, Martine Hoogman, Daniel H. Wolf, Georg C. Ziegler, Marieke Klein, Barbara Franke, Erik G. Jönsson, Laura Koenders, Stefan Ehrlich, Oliver Gruber, Ingrid Agartz, Kun Yang, Ryota Kanai, Sarah Baumeister, Colm McDonald, Annabella Di Giorgio, Amanda Worker, Anne Uhlmann, Marcus V. Zanetti, Danai Dima, Matthew D. Sacchet, Sarah E. Medland, Aurora Bonvino, Benedicto Crespo-Facorro, Jan Egil Nordvik, Joshua L. Roffman, Yannis Paloyelis, Jessica A. Turner, T. P. Klyushnik, Christopher G. Davey, Rachel E. Gur, Ian B. Hickie, Christopher R.K. Ching, Jonna Kuntsi, Tobias Banaschewski, Chaim Huyser, Amirhossein Modabbernia, John D. West, Fabrice Crivello, Núria Bargalló, Patricia J. Conrod, Nic J.A. van der Wee, Mauricio H. Serpa, Thomas H. Wassink, Kathryn I. Alpert, Dick J. Veltman, Andrew J. Saykin, Genevieve McPhilemy, Perminder S. Sachdev, Vincent P. Clark, Ian H. Gotlib, Susanne Erk, Henrik Walter, Dennis van den Meer, Simon Cervenka, Oliver Grimm, Andrew M. McIntosh, Alexander Tomyshev, Francisco X. Castellanos, Bernd Kramer, Klaus-Peter Lesch, Odile A. van den Heuvel, Sophia I. Thomopoulos, Diana Tordesillas-Gutiérrez, Terry L. Jernigan, Yulyia Yoncheva, Anouk den Braber, Jim Lagopoulos, Maria J. Portella, Ole A. Andreassen, Gaelle E. Doucet, Avram J. Holmes, Nynke A. Groenewold, Pedro G.P. Rosa, Hilleke E. Hulshoff Pol, Sanne Koops, José M. Menchón, Jan K. Buitelaar, Dan J. Stein, Dorret I. Boomsma, Lei Wang, C.A. Hartman, Pascual Sánchez-Juan, Andreas Heinz, European Commission, National Institute of Child Health and Human Development (US), QIMR Berghofer Medical Research Institute (Australia), University of Queensland, National Cancer Institute (US), Dutch Research Council, Netherlands Organisation for Health Research and Development, National Institute of Mental Health (US), European Research Council, National Center for Advancing Translational Sciences (US), Medical Research Council (UK), Fundación Marques de Valdecilla, Instituto de Salud Carlos III, Swedish Research Council, South-Eastern Norway Regional Health Authority, Research Council of Norway, Icahn School of Medicine at Mount Sinai, South London and Maudsley NHS Foundation Trust, NHS Foundation Trust, National Institute for Health Research (UK), Clinical Cognitive Neuropsychiatry Research Program (CCNP), Movement Disorder (MD), Developmental Neuroscience in Society, Child and Adolescent Psychiatry / Psychology, Adult Psychiatry, APH - Mental Health, ANS - Complex Trait Genetics, ANS - Mood, Anxiety, Psychosis, Stress & Sleep, Child Psychiatry, ANS - Cellular & Molecular Mechanisms, General Paediatrics, ARD - Amsterdam Reproduction and Development, Karolinska Schizophrenia Project (KaSP), Ontwikkelingspsychologie (Psychologie, FMG), Psychiatry, Amsterdam Neuroscience - Mood, Anxiety, Psychosis, Stress & Sleep, Epidemiology and Data Science, Neurology, Amsterdam Neuroscience - Neurodegeneration, Pediatric surgery, Anatomy and neurosciences, Amsterdam Neuroscience - Compulsivity, Impulsivity & Attention, Amsterdam Neuroscience - Brain Imaging, RS: MHeNs - R2 - Mental Health, Psychiatrie & Neuropsychologie, Biological Psychology, APH - Methodology, Complex Trait Genetics, Amsterdam Neuroscience - Complex Trait Genetics, Educational and Family Studies, Cognitive Psychology, IBBA, Clinical Neuropsychology, Faculty of Behavioural and Movement Sciences, and APH - Personalized Medicine
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Male ,Aging ,Neurologi ,Audiology ,Trajectories ,0302 clinical medicine ,130 000 Cognitive Neurology & Memory ,diagnostic imaging [Cerebral Cortex] ,Child ,Research Articles ,Cerebral Cortex ,Psychiatry ,Aged, 80 and over ,Radiological and Ultrasound Technology ,Fractional polynomial ,05 social sciences ,Radiology, Nuclear Medicine & Medical Imaging ,1. No poverty ,Cognition ,Middle Aged ,Cerebral cortex ,Regression ,3. Good health ,Escorça cerebral ,Neurology ,Radiology Nuclear Medicine and imaging ,Healthy individuals ,Child, Preschool ,anatomy & histology [Cerebral Cortex] ,Female ,Analysis of variance ,Anatomy ,Life Sciences & Biomedicine ,Trajectorie ,Research Article ,Neuroinformatics ,Adult ,medicine.medical_specialty ,Adolescent ,Human Development ,Clinical Neurology ,BF ,Neuroimaging ,Biology ,Development ,050105 experimental psychology ,Psykiatri ,Cortical thickness ,03 medical and health sciences ,Young Adult ,Neuroimaging genetics ,Envelliment ,medicine ,Humans ,trajectories ,0501 psychology and cognitive sciences ,Radiology, Nuclear Medicine and imaging ,ddc:610 ,development ,Aged ,Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7] ,Science & Technology ,Brain morphometry ,aging ,Neurosciences ,cortical thickness ,Cross-Sectional Studies ,RC0321 ,Neurology (clinical) ,Neurosciences & Neurology ,030217 neurology & neurosurgery ,physiology [Human Development] - Abstract
Special Issue: The ENIGMA Consortium: the first 10 years., Delineating the association of age and cortical thickness in healthy individuals is critical given the association of cortical thickness with cognition and behavior. Previous research has shown that robust estimates of the association between age and brain morphometry require large-scale studies. In response, we used cross-sectional data from 17,075 individuals aged 3–90 years from the Enhancing Neuroimaging Genetics through Meta-Analysis (ENIGMA) Consortium to infer age-related changes in cortical thickness. We used fractional polynomial (FP) regression to quantify the association between age and cortical thickness, and we computed normalized growth centiles using the parametric Lambda, Mu, and Sigma method. Interindividual variability was estimated using meta-analysis and one-way analysis of variance. For most regions, their highest cortical thickness value was observed in childhood. Age and cortical thickness showed a negative association; the slope was steeper up to the third decade of life and more gradual thereafter; notable exceptions to this general pattern were entorhinal, temporopolar, and anterior cingulate cortices. Interindividual variability was largest in temporal and frontal regions across the lifespan. Age and its FP combinations explained up to 59% variance in cortical thickness. These results may form the basis of further investigation on normative deviation in cortical thickness and its significance for behavioral and cognitive outcomes., European Community's Seventh Framework Programme, Grant/Award Numbers: 278948, 602450, 603016, 602805; US National Institute of Child Health and Human Development, Grant/Award Numbers: RO1HD050735, 1009064, 496682; QIMR Berghofer Medical Research Institute and the Centre for Advanced Imaging, University of Queensland; ICTSI NIH/NCRR, Grant/Award Number: RR025761; European Community's Horizon 2020 Programme, Grant/Award Numbers: 667302, 643051; Vici Innovation Program, Grant/Award Numbers: #91619115, 016-130-669; NWO Brain & Cognition Excellence Program, Grant/Award Number: 433-09-229; Biobanking and Biomolecular Resources Research Infrastructure (Netherlands) (BBMRI-NL); Spinozapremie, Grant/Award Number: NWO-56-464-14192; Biobanking and Biomolecular Resources Research Infrastructure, Grant/Award Numbers: 184.033.111, 184.021.007; Netherlands Organization for Health Research and Development (ZonMW), Grant/Award Numbers: 480-15-001/674, 024.001.003, 911-09-032, 056-32-010, 481-08-011, 016-115-035, 31160008, 400-07-080, 400-05-717, 451-04-034, 463-06-001, 480-04-004, 904-61-193, 912-10-020, 985-10-002, 904-61-090; NIMH, Grant/Award Number: R01 MH090553; Geestkracht programme of the Dutch Health Research Council, Grant/Award Number: 10-000-1001; FP7 Ideas: European Research Council; Nederlandse Organisatie voor Wetenschappelijk Onderzoek, Grant/Award Numbers: NWO/SPI 56-464-14192, NWO-MagW 480-04-004, 433-09-220, NWO 51.02.062, NWO 51.02.061; National Center for Advancing Translational Sciences, National Institutes of Health, Grant/Award Number: UL1 TR000153; National Center for Research Resources; National Center for Research Resources at the National Institutes of Health, Grant/Award Numbers: NIH 1U24 RR025736-01, NIH 1U24 RR021992; NIH Institutes contributing to the Big Data to Knowledge; U.S. National Institutes of Health, Grant/Award Numbers: R01 CA101318, P30 AG10133, R01 AG19771; Medical Research Council, Grant/Award Numbers: U54EB020403, G0500092; National Institute of Mental Health, Grant/Award Numbers: R01MH117014, R01MH042191; Fundación Instituto de Investigación Marqués de Valdecilla, Grant/Award Numbers: API07/011, NCT02534363, NCT0235832; Instituto de Salud Carlos III, Grant/Award Numbers: PI14/00918, PI14/00639, PI060507, PI050427, PI020499; Swedish Research Council, Grant/Award Numbers: 523-2014-3467, 2017-00949, 521-2014-3487; South-Eastern Norway Health Authority; the Research Council of Norway, Grant/Award Number: 223273; South Eastern Norway Regional Health Authority, Grant/Award Numbers: 2017-112, 2019107; Icahn School of Medicine at Mount Sinai; Seventh Framework Programme (FP7/2007-2013), Grant/Award Number: 602450; National Institutes of Health, Grant/Award Numbers: R01 MH116147, R01 MH113619, R01 MH104284; South London and Maudsley NHS Foundation Trust; the National Institute for Health Research (NIHR)
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- 2022
43. Increased functional connectivity between presupplementary motor area and inferior frontal gyrus associated with the ability of motor response inhibition in obsessive–compulsive disorder
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Taro Mizobe, Hirofumi Tomiyama, Kiyotaka Nemoto, Suguru Hasuzawa, Akio Hiwatashi, Mayumi Tomita, Aikana Ohno, Sae Tsuruta, Osamu Togao, Kenta Kato, Keitaro Murayama, and Tomohiro Nakao
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Male ,Obsessive-Compulsive Disorder ,computer.software_genre ,inferior frontal gyrus ,Thalamus ,Voxel ,cortico‐striato‐thalamo‐cortical circuit ,Prefrontal cortex ,Research Articles ,Response inhibition ,Cerebral Cortex ,Radiological and Ultrasound Technology ,medicine.diagnostic_test ,cingulo‐opercular salience network ,Motor Cortex ,Middle Aged ,Magnetic Resonance Imaging ,Inhibition, Psychological ,medicine.anatomical_structure ,Neurology ,Female ,Anatomy ,Research Article ,Adult ,Inferior frontal gyrus ,stop‐signal task ,Motor Activity ,fronto‐striatal circuit ,behavioral disciplines and activities ,Young Adult ,obsessive–compulsive disorder ,mental disorders ,Connectome ,medicine ,Humans ,response inhibition ,Radiology, Nuclear Medicine and imaging ,presupplementary motor cortex ,Anterior cingulate cortex ,business.industry ,Inferior parietal lobule ,Corpus Striatum ,ventral attention cortico‐striato‐thalamo‐cortical circuit ,resting‐state functional MRI ,Neurology (clinical) ,Nerve Net ,Functional magnetic resonance imaging ,business ,Neuroscience ,Insula ,computer - Abstract
Recent evidence suggests that presupplementary motor area (pre‐SMA) and inferior frontal gyrus (IFG) play an important role in response inhibition. However, no study has investigated the relationship between these brain networks at resting‐state and response inhibition in obsessive–compulsive disorder (OCD). We performed resting‐state functional magnetic resonance imaging scans and then measured the response inhibition of 41 medication‐free OCD patients and 49 healthy control (HC) participants by using the stop‐signal task outside the scanner. We explored the differences between OCD and HC groups in the functional connectivity of pre‐SMA and IFG associated with the ability of motor response inhibition. OCD patients showed a longer stop‐signal reaction time (SSRT). Compared to HC, OCD patients exhibit different associations between the ability of motor response inhibition and the functional connectivity between pre‐SMA and IFG, inferior parietal lobule, dorsal anterior cingulate cortex, insula, and anterior prefrontal cortex. Additional analysis to investigate the functional connectivity difference from the seed ROIs to the whole brain voxels revealed that, compared to HC, OCD exhibited greater functional connectivity between pre‐SMA and IFG. Also, this functional connectivity was positively correlated with the SSRT score. These results provide additional insight into the characteristics of the resting‐state functional connectivity of the regions belonging to the cortico‐striato‐thalamo‐cortical circuit and the cingulo‐opercular salience network, underlying the impaired motor response inhibition of OCD. In particular, we emphasize the importance of altered functional connectivity between pre‐SMA and IFG for the pathophysiology of motor response inhibition in OCD., Obsessive–compulsive disorder patients had significantly different associations between the abilities of motor response inhibition and the resting‐state functional connectivity from pre‐SMA to IPL, IFG, dACC and anterior‐insula. Additionally, compared to healthy control, OCD exhibited greater functional connectivity between pre‐SMA and IFG, and this functional connectivity was correlated with the the abilities of motor response inhibition.
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- 2021
44. A case of bipolar disorder with AIF1 (coding gene of Iba-1) deletion: A pilot in vitro analysis using blood-derived microglia-like cells
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Masahiro Ohgidani, Itaru Kushima, Shogo Inamine, Sota Kyuragi, Noriaki Sagata, Tomohiro Nakao, Shigenobu Kanba, Norio Ozaki, and Takahiro A Kato
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Psychiatry and Mental health ,Neurology ,General Neuroscience ,Neurology (clinical) ,General Medicine - Published
- 2022
45. Successful Management of ECT-Resistant Interictal Psychosis With Clozapine: A Case Report.
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Ryo Mitoma, Shogo Hirano, and Tomohiro Nakao
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- 2024
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46. Association of gait speed with regional brain volumes and risk of dementia in older Japanese: The Hisayama study
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Takahiro Tajimi, Yoshihiko Furuta, Naoki Hirabayashi, Takanori Honda, Jun Hata, Tomoyuki Ohara, Mao Shibata, Tomohiro Nakao, Takanari Kitazono, Yasuharu Nakashima, and Toshiharu Ninomiya
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Aging ,Health (social science) ,Geriatrics and Gerontology ,Gerontology - Abstract
To investigate the association of gait speed with regional brain volumes and the risk of incident dementia.A total of 1112 dementia-free Japanese residents aged ≥65 years who underwent brain magnetic resonance imaging were followed for 5.0 years (median). The participants were classified into the age- and sex-specific quartile levels of maximum gait speed. Regional gray matter volumes (GMV) and white matter hyperintensities volumes (WMHV) were measured by applying voxel-based morphometry methods. The cross-sectional association of maximum gait speed with regional GMV was examined using an analysis of covariance. We also estimated the association between maximum gait speed level and the risk of developing dementia using a Cox proportional hazards model. Mediation analyses were conducted to determine the contribution of regional brain volumes to the association between maximum gait speed and dementia.Lower maximum gait speed was significantly associated with lower GMV of the total brain, frontal lobe, temporal lobe, cingulate gyrus, insula, hippocampus, amygdala, basal ganglia, thalamus, and cerebellum, and increased WMHV at baseline. During the follow-up, 108 participants developed dementia. The incidence rate of all dementias increased significantly with decreasing maximum gait speed after adjusting for potential confounders (P for trend = 0.03). The mediating effects of the GMV of the hippocampus, GMV of the insula, and WMHV were significant.Lower maximum gait speed was significantly associated with an increased risk of dementia. Reduced GMV of the hippocampus or insula, and an increase in WMHV was likely to be involved in this association.
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- 2022
47. Decreased cortical gyrification and surface area in the left medial parietal cortex in patients with treatment-resistant and ultratreatment-resistant schizophrenia
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Kazutoshi Kitajima, Shunsuke Tamura, Daiki Sasabayashi, Shinichiro Nakajima, Yusuke Iwata, Fumihiko Ueno, Yoshifumi Takai, Junichi Takahashi, Fernando Caravaggio, Wanna Mar, Edgardo Torres‐Carmona, Yoshihiro Noda, Philip Gerretsen, Vincenzo de Luca, Masaru Mimura, Shogo Hirano, Tomohiro Nakao, Toshiaki Onitsuka, Gary Remington, Ariel Graff‐Guerrero, and Yoji Hirano
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Psychiatry and Mental health ,Neurology ,General Neuroscience ,Neurology (clinical) ,General Medicine - Abstract
Validating the vulnerabilities and pathologies underlying treatment-resistant schizophrenia (TRS) is an important challenge in optimizing treatment. Gyrification and surface area (SA), reflecting neurodevelopmental features, have been linked to genetic vulnerability to schizophrenia. The aim of this study was to identify gyrification and SA abnormalities specific to TRS.We analyzed 3T magnetic resonance imaging findings of 24 healthy controls (HCs), 20 responders to first-line antipsychotics (FL-Resp), and 41 patients with TRS, including 19 clozapine responders (CLZ-Resp) and 22 FL- and clozapine-resistant patients (patients with ultratreatment-resistant schizophrenia [URS]). The local gyrification index (LGI) and associated SA were analyzed across groups. Diagnostic accuracy was verified by receiver operating characteristic curve analysis.Both CLZ-Resp and URS had lower LGI values than HCs (P = 0.041, Hedges g [gLGI and SA in the Lt-MPC, a functional hub in the default-mode network, were abnormally reduced in TRS compared with non-TRS. Thus, altered LGI and SA in the Lt-MPC might be structural features associated with genetic vulnerability to TRS.
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- 2022
48. The functional connectome in obsessive-compulsive disorder: resting-state mega-analysis and machine learning classification for the ENIGMA-OCD consortium
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Willem B. Bruin, Yoshinari Abe, Pino Alonso, Alan Anticevic, Srinivas Balachander, Nuria Bargallo, Marcelo Camargo Batistuzzo, Francesco Benedetti, Sara Bertolín, Silvia Brem, Federico Calesella, beatriz couto, Damiaan Denys, Marco A.N. Echevarria, Goi Khia Eng, Sónia Ferreira, Jamie Feusner, Rachael Grazioplene, Patricia Gruner, Joyce Y. Guo, Kristen Hagen, Bjarne Hansen, Yoshiyuki Hirano, Marcelo Queiroz Hoexter, Neda Jahanshad, Fern Jaspers-Fayer, Selina Kasprzak, Minah Kim, kathrin koch, Yoo Bin Kwak, Jun Soo Kwon, Luisa Lazaro, Chiang-Shan R. Li, Christine Lochner, Rachel Marsh, Ignacio Martínez-Zalacaín, Jose M. Menchon, Pedro Silva Moreira, Pedro Morgado, Akiko Nakagawa, Tomohiro Nakao, Janardhanan C. Narayanaswamy, Erika L. Nurmi, Jose C. Pariente Zorrilla, John Piacentini, Maria Picó-Pérez, Federica Piras, Fabrizio Piras, Christopher Pittenger, Janardhan Y.C. Reddy, Daniela Rodriguez-Manrique, Yuki Sakai, Eiji Shimizu, Venkataram Shivakumar, Blair H. Simpson, Carles Soriano-Mas, Nuno Sousa, Gianfranco Spalletta, Emily R. Stern, S. Evelyn Stewart, Philip R. Szeszko, Jinsong Tang, Sophia I Thomopoulos, Anders Lillevik Thorsen, Yoshida Tokiko, Hirofumi Tomiyama, Benedetta Vai, Ilya Veer, Venkatasubramanian G, Nora C. Vetter, Chris Vriend, Susanne Walitza, Lea Waller, Zhen Wang, Anri Watanabe, Nicole Wolff, Je-Yeon Yun, Qing Zhao, Wieke A. van Leeuwen, Hein J.F. van Marle, Laurens A. van de Mortel, Anouk van der Straten, Ysbrand van der Werf, Paul Thompson, Dan J. Stein, Odile A. van den Heuvel, and Guido van Wingen
- Abstract
Current knowledge about functional connectivity in obsessive-compulsive disorder (OCD) is based on small-scale studies, limiting the generalizability of results. Moreover, the majority of studies have focused only on predefined regions or functional networks rather than connectivity throughout the entire brain. Here, we investigated differences in resting-state functional connectivity between OCD patients and healthy controls (HC) using mega-analysis of data from 1,024 OCD patients and 1,028 HC from 28 independent samples of the ENIGMA-OCD consortium. We assessed group differences in whole-brain functional connectivity at both the regional and network level, and investigated whether functional connectivity could serve as biomarker to identify patient status at the individual level using machine learning analysis. The mega-analyses revealed widespread abnormalities in functional connectivity in OCD, with global hypo-connectivity (Cohen’s d: -0.27 to -0.13) and few hyper-connections, mainly with the thalamus (Cohen’s d: 0.19 to 0.22). Most hypo-connections were located within the sensorimotor network and no fronto-striatal abnormalities were found. Overall, classification performances were poor, with area-under-the-receiver-operating-characteristic curve (AUC) scores ranging between 0.567 and 0.673, with better classification for medicated (AUC=0.702) than unmedicated (AUC=0.608) patients versus healthy controls. These findings provide partial support for existing pathophysiological models of OCD and highlight the important role of the sensorimotor network in OCD. However, resting-state connectivity does not so far provide an accurate biomarker for identifying patients at the individual level.
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- 2022
49. Blood metabolic signatures of hikikomori, pathological social withdrawal
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Daiki Setoyama, Toshio Matsushima, Kohei Hayakawa, Tomohiro Nakao, Shigenobu Kanba, Dongchon Kang, and Takahiro A. Kato
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Male ,Japan ,Social Isolation ,Humans ,Phobia, Social ,Shame ,Uric Acid - Abstract
A severe form of pathological social withdrawal, 'hikikomori,' has been acknowledged in Japan, spreading worldwide, and becoming a global health issue. The pathophysiology of hikikomori has not been clarified, and its biological traits remain unexplored.Drug-free patients with hikikomori (Long-chain acylcarnitine levels were remarkably higher in patients with hikikomori; bilirubin, arginine, ornithine, and serum arginase were significantly different in male patients with hikikomori. The discriminative random forest model was highly performant, exhibiting an area under the ROC curve of 0.854 (confidential interval = 0.648-1.000). To predict hikikomori severity, a partial least squares PLS-regression model was successfully created with high linearity and practical accuracy. In addition, blood serum uric acid and plasma cholesterol esters contributed to the stratification of cases.These findings reveal the blood metabolic signatures of hikikomori, which are key to elucidating the pathophysiology of hikikomori and also useful as an index for monitoring the treatment course for rehabilitation.
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- 2021
50. Association between serum glycated albumin and risk of cardiovascular disease in a Japanese community: The Hisayama Study
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Takanori Honda, Satoko Sakata, Toshiharu Ninomiya, Tomoyuki Ohara, Tomohiro Nakao, Akane Mihara, Sanmei Chen, Jun Hata, Emi Oishi, Takanari Kitazono, and Yoichiro Hirakawa
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Glycation End Products, Advanced ,0301 basic medicine ,medicine.medical_specialty ,030204 cardiovascular system & hematology ,03 medical and health sciences ,0302 clinical medicine ,Japan ,Risk Factors ,Internal medicine ,Diabetes mellitus ,Epidemiology ,medicine ,Humans ,Glycated Serum Albumin ,Cumulative incidence ,Prospective Studies ,cardiovascular diseases ,Prospective cohort study ,Stroke ,Serum Albumin ,Proportional Hazards Models ,business.industry ,Proportional hazards model ,Hazard ratio ,medicine.disease ,Confidence interval ,030104 developmental biology ,Cardiovascular Diseases ,Cardiology and Cardiovascular Medicine ,business - Abstract
We aimed to investigate the association of serum glycated albumin (GA) levels with the risk of cardiovascular disease (CVD) and its subtypes, including coronary heart disease (CHD) and stroke, in a general Japanese population.A total of 2965 Japanese community-dwellers aged ≥40 years were followed prospectively for a median of 10.2 years (2002-2012). Serum GA was measured by the enzymatic method and divided into quartiles. Cox proportional hazards models were used to estimate the hazard ratios (HRs) and their 95% confidence intervals (CIs) of serum GA levels on CVD risk.During the follow-up, 213 subjects developed CVD; 95 had CHD, and 133 had stroke. The cumulative incidence of CVD, CHD, and stroke increased significantly with increasing serum GA levels (all p for trend0.02). Compared with the lowest serum GA quartile (13.6%), the multivariable-adjusted HRs (95% CI) of the highest quartile (≥15.7%) were 2.33 (1.46-3.68) for CVD, 2.23 (1.11-4.50) for CHD, and 2.47 (1.38-4.40) for stroke. In addition, a subgroup analysis showed that CVD risk increased significantly with increasing levels of serum GA in both subjects with and without diabetes mellitus. The increasing trend of CVD risk for higher serum GA levels was also observed in subjects with low hemoglobin AOur findings suggest that higher serum GA levels are significantly associated with the development of CVD and its subtypes, even among subjects without diabetes or those with normal hemoglobin A
- Published
- 2020
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