303 results on '"K, Iijima"'
Search Results
2. Real-time wave prediction for floating offshore wind turbine based on the Kalman filter
- Author
-
R. Isnaini, K. Toichi, T. Akira, and K. Iijima
- Published
- 2022
3. 1351 Construction of a three-dimensional sensory stimulus evaluation model focusing on the cellular signal pathway though activation of TRPV1
- Author
-
M. Takaishi, M. Kono, H. Ikeda, K. Iijima, and M. Tominaga
- Subjects
Cell Biology ,Dermatology ,Molecular Biology ,Biochemistry - Published
- 2023
4. Testing mosses exposed in bags as biointerceptors of airborne radiocaesium after the Fukushima Dai-ichi Nuclear Power Station accident
- Author
-
A, Di Palma, P, Adamo, T, Dohi, K, Fujiwara, H, Hagiwara, A, Kitamura, A, Sakoda, K, Sato, K, Iijima, Di Palma, A, Adamo, P, Dohi, T, Fujiwara, K, Hagiwara, H, Kitamura, A, Sakoda, A, Sato, K, and Iijima, K
- Subjects
Environmental Engineering ,Health, Toxicology and Mutagenesis ,Public Health, Environmental and Occupational Health ,Hypnum spp ,Bryophyta ,General Medicine ,General Chemistry ,Sphagnum spp ,Pollution ,Bryopsida ,(134)C ,Soil ,Japan ,(137)C ,Cesium Radioisotopes ,Radiation Monitoring ,Biomonitoring ,Fukushima Nuclear Accident ,Environmental Chemistry ,Airborne particulate matter - Abstract
Eight years after the Fukushima nuclear accident, mosses exposed in bags were used to investigate their ability to accumulate radiocaesium and therefore to act as biointerceptors of 134Cs and 137Cs in the evacuated area of the Fukushima territory. Bags were filled with 3 widely studied moss species (Sphagnum palustre, Hypnum cupressi-forme, and Hypnum plumaeforme) and exposed for 3, 6 or 9 weeks at 5 former residential sites within the Fukushima area and, for comparison, at three background sites located 700 km away. The radiocaesium activity concentrations found in moss bags were evaluated as function of exposure time, site conditions and moss species. In the Fukushima area, the moss bags accumulated 137Cs at all exposure sites and in all exposure periods, with S. palustre having the highest 137Cs accumulation ability. The 137Cs activity concentrations (from 28 to 4700 Bq kg- 1) measured in moss bags increased with the exposure time and were consistent with the decontamination status of each exposure site, highlighting the big potential of moss bags to discriminate among exposure sites. Time dependency of 137Cs activity concentrations measured in mosses allowed the calculation of location-specific and species-specific factors, which can be used to predict radiocaesium accumulation trends in future bio-monitoring surveys performed in the same area with the same experimental design. Autoradiography and electron microscopy analyses of the moss surfaces revealed a prevalence of soil-derived particulate form of radiocaesium, suggesting the use of moss bags as warning sensors of resuspended particles potentially harmful for local residents.
- Published
- 2022
5. Poor Health Behaviors among Housebound Japanese Community-Dwelling Older Adults Due to Prolonged Self-Restraint during the First COVID-19 Pandemic: A Cross-Sectional Survey
- Author
-
T. Tanaka, B.-K. Son, and K. Iijima
- Subjects
General Medicine - Published
- 2022
6. P533 Relation between TL1A expression in intestinal mucosa, and endoscopic severity and clinical course in ulcerative colitis
- Author
-
Y Shimodaira, T Yoshida, K Watanabe, S Takahashi, S Fukuda, S Koizumi, T Matsuhashi, and K Iijima
- Subjects
Gastroenterology ,General Medicine - Abstract
Background TL1A is a TNF super family member cytokine encoded by TNFSF15 and reported to be a disease susceptibility gene for IBD. The relationship between TL1A expression and IBD pathophysiology, clinical course, endoscopic findings was not sufficiently clear. The aim of this study was to clarify the correlation between TL1A expression in the intestinal mucosa of UC and endoscopic severity, clinical severity, and clinical course. Methods The subjects were patients with UC who were visiting our hospital. Mucosal samples were biopsied from rectum with lower gastrointestinal endoscopy, and TL1A gene expression was examined by RT-PCR. We analyzed the relationship between patients’ background, clinical symptoms, blood test findings, and mucosal activity and TL1A expression. Results A total of 77 specimens obtained with individual colonoscopy from 61 cases were included. Median age was 43, 36 cases were males, duration of disease was 2 years, the number of pancolitis was 54, median partial mayo score (pMayo) was 3, and the level of CRP was 1.5 mg/L. The number with Mayo endoscopic subscore (MES) of 0, 1, 2, and 3 were 14, 27, 24, and 12, respectively, and the mean TL1A expression was 1.76-, 1.09-, and 1.17-times higher in MES 1, 2, and 3 than in MES 0, respectively. TL1A expression was significantly higher in MES 1 than in MES 0 and MES 2. TL1A expression was significantly lower in the active group (pMayo 4 or higher) compared to the clinically low disease activity group (pMayo 3 or lower). TL1A expression was significantly lower with CRP ≥0.03 compared to CRP Conclusion Relatively low activity in UC revealed higher mucosal expression of TL1A. TL1A is known to be secreted from various cell types such as macrophages and lymphocytes. It was suggested that the source of cell types and the amount of expression would alter according to the degree of inflammation.
- Published
- 2023
7. Experimental and numerical investigation of high frequency vibrations in segmented ship model using one-way coupling of CFD and FEM
- Author
-
K. Iijima, M. Fujikubo, S.K. Pal, A. Tatsumi, and T. Takami
- Subjects
Coupling ,Physics ,business.industry ,Mechanics ,Computational fluid dynamics ,High frequency vibration ,business ,Finite element method - Published
- 2021
8. Comparison of low-dose-rate brachytherapy versus radical prostatectomy in patients with intermediate-risk prostate cancer: A propensity-matched multi-institutional study
- Author
-
H. Tsumura, N. Tanaka, T. Oguchi, T. Owari, Y. Nakai, I. Asakawa, K. Iijima, H. Kato, I. Hashida, K. Tabata, T. Satoh, and H. Ishiyama
- Subjects
Urology - Published
- 2022
9. OP0008 A NOVEL SITE-SPECIFIC PEGYLATED IL-2 WITH POTENT AND TREG-SELECTIVE ACTIVITY IN VIVO
- Author
-
M. Ikeda, S. Yamaguchi, M. Murakami, S. Takaoka, Y. Sakaguchi, S. Yasui, K. Iijima, K. Nanya, H. Onodera, and T. Amano
- Subjects
Rheumatology ,Immunology ,Immunology and Allergy ,General Biochemistry, Genetics and Molecular Biology - Abstract
BackgroundDecreased regulatory T cells (Tregs) and Treg dysfunction are hallmarks of a various autoimmune and inflammatory diseases. While low-dose IL-2 therapy induces Treg expansion in vivo and has clinical benefits in some diseases (e.g., SLE and chronic graft-versus-host disease [GvHD]), there are many concerns about adverse events due to low Treg-selectivity. Furthermore, frequent dosing is needed due to the short half-life.ObjectivesWe discovered a novel site-specific PEGylated IL-2 variant, KKC80, with high Treg selectivity and a long half-life in vivo, which overcomes the issues of low-dose IL-2 therapy.MethodsBased on the co-crystal structure of wild-type IL-2 and its heterotrimeric receptor (PBD ID: 2ERJ), amino acid residues that were to be PEGylation sites were substituted with oAzZLys, an azide-containing lysine derivative. The PEG molecule was site-specifically attached to oAzZLys-incorporated IL-2 by copper-free click chemistry. The binding property to the IL-2 receptors were measured by surface plasmon resonance (SPR). In vitro, Treg selectivity was evaluated by the IL-2-dependent proliferation activity of Tregs and NK cells from human peripheral blood mononuclear cells (PBMCs). In vivo pharmacological activity after the single subcutaneous administration in cynomolgus monkeys was measured by changes in Treg count and Treg activation status in peripheral blood by flow cytometry. Pharmacokinetic parameters were calculated according to serum PEGylated IL-2 concentration. Efficacy in mouse xenogeneic GvHD model using human PBMC-transplanted NOG mice and in monkey DTH model were evaluated.ResultsA novel PEGylated IL-2, KKC80 (human IL-2 desA1/C125S /I129oAzZLys_W-shaped 80 kDa PEG) was discovered by optimizing the PEGylation site and PEG structure based on Treg selectivity and PK. SPR analysis showed that the binding affinity of KKC80 to CD25 was moderately decreased from wild-type IL-2, while binding affinity of KKC80 to IL-2Rβγ was remarkably decreased due to a significant change of the association rate constant. In vitro, wild-type IL-2 activated both Tregs and NK cells in the same concentration range, whereas KKC80 selectively activated Tregs. The Treg selectivity of KKC80 was comparable to another IL-2 mutein, Fc.IL-2 V91K. KKC80, but not Fc.IL-2 V91K, retained its biological activity, even in the presence of a large amount of recombinant soluble CD25, which mimicked the endogenous decoy receptor for IL-2. In monkeys, KKC80 selectively increased peripheral blood Tregs in a dose-dependent manner; the average maximum rate of increase of Treg count in animals treated with 0.01, 0.03, 0.1, 0.3 and 1 mg/kg was 1.5, 3.5, 28, 50 and 154-fold, respectively. In contrast to Tregs, the rates of increase of conventional CD4+ T, CD8+ T and NK cells were low. The Treg increase peaked on day 8 or 11 and lasted for over day 29. KKC80 showed a more sustained upregulation of functional Treg markers (e.g., Foxp3 and CD25) in comparison to Fc.IL-2 V91K. The half-life of KKC80 was calculated as 83.5 to 150 h. At high doses, inflammation-related adverse effects, including increased CRP (≥0.3 mg/kg) and deterioration of general conditions (1 mg/kg) were observed. In the mouse xenogenic GvHD model, KKC80 ameliorated GvHD symptoms and suppressed multiple tissue inflammation markers. Decreased soluble CD25 and IFN-γ were also confirmed, suggesting Treg-mediated anti-inflammatory effect by KKC80 administration were exerted in vivo. In the monkey DTH model, KKC80 suppressed skin inflammation and antibody production.ConclusionAmong next-generation IL-2 variants, KKC80 showed a best-in-class biological profile for Treg activation. A drastic and sustained increase of Tregs with high Treg-selectivity and anti-inflammatory effects were observed in vivo. These data suggest that in comparison to current IL-2 therapy, KKC80 provides superior therapeutic index and efficacy in patients with autoimmune and inflammatory diseases.Figure 1.Disclosure of InterestsMasahiro Ikeda Employee of: Kyowa Kirin Co., Ltd., Shinpei Yamaguchi Employee of: Kyowa Kirin Co., Ltd., Masumi Murakami Employee of: Kyowa Kirin Co., Ltd., Shigeki Takaoka Employee of: Kyowa Kirin Co., Ltd., Yasuko Sakaguchi Employee of: Kyowa Kirin Co., Ltd., Shunki Yasui Employee of: Kyowa Kirin Co., Ltd., Kousuke Iijima Employee of: Kyowa Kirin Co., Ltd., Kenichiro Nanya Employee of: Kyowa Kirin Co., Ltd., Hideyuki Onodera Employee of: Kyowa Kirin Co., Ltd., Toru Amano Employee of: Kyowa Kirin Co., Ltd.
- Published
- 2022
10. Consensus statement on "Oral frailty" from the Japan Geriatrics Society, the Japanese Society of Gerodontology, and the Japanese Association on Sarcopenia and Frailty.
- Author
-
Tanaka T, Hirano H, Ikebe K, Ueda T, Iwasaki M, Minakuchi S, Arai H, Akishita M, Kozaki K, and Iijima K
- Subjects
- Aged, Aged, 80 and over, Humans, Consensus, Japan, Oral Health, Societies, Medical, Frail Elderly, Frailty complications, Geriatric Assessment methods, Geriatrics, Sarcopenia
- Abstract
The concept of oral frailty was first proposed in Japan in 2014 by the "Joint Working Committee on Oral Frailty," consisting of three academic societies-the Japan Geriatrics Society, the Japanese Society of Gerodontology, and the Japanese Association on Sarcopenia and Frailty-to enhance public understanding of oral frailty. Oral frailty is a state between robust oral function (a "healthy mouth") and its decline, characterized by slight declines in oral function, including tooth loss and difficulties in eating and communicating, which increase the risk of impaired oral functional capacity but can be reversed with proper intervention and treatment. Oral frailty can be assessed using the Oral Frailty 5-item Checklist (OF-5) without the need for a dental health professional. Oral frailty is defined as having at least two of the following components: (i) fewer teeth, (ii) difficulty chewing, (iii) difficulty swallowing, (iv) dry mouth, and (v) low articulatory oral motor skills. Approximately 40% of community-dwelling older adults have oral frailty. Oral frailty is associated with poor dietary variety, social isolation, physical frailty, disability, and mortality. This statement introduces the concept and definition of oral frailty, a new assessment tool (OF-5), and concept diagrams for healthcare professionals and the general public. These tools aim to promote public awareness and facilitate collaboration between medical and dental healthcare providers. Geriatr Gerontol Int 2024; 24: 1111-1119., (© 2024 The Author(s). Geriatrics & Gerontology International published by John Wiley & Sons Australia, Ltd on behalf of Japan Geriatrics Society.)
- Published
- 2024
- Full Text
- View/download PDF
11. Risk factors and pattern of metastatic recurrence after endoscopic resection with additional treatment for esophageal cancer.
- Author
-
Tanaka I, Hatta W, Koike T, Takahashi S, Shimada T, Hikichi T, Toya Y, Onozato Y, Hamada K, Fukushi D, Watanabe K, Kayaba S, Ito H, Tatsuta T, Oikawa T, Takahashi Y, Kondo Y, Yoshimura T, Shiroki T, Nagino K, Hanabata N, Funakubo A, Ohira T, Nakamura J, Nakamura T, Nakaya N, Iijima K, Matsumoto T, Fukuda S, Masamune A, and Hirasawa D
- Subjects
- Humans, Male, Female, Aged, Risk Factors, Middle Aged, Japan, Chemoradiotherapy methods, Esophagoscopy methods, Retrospective Studies, Aged, 80 and over, Neoplasm Invasiveness, Esophageal Neoplasms pathology, Esophageal Neoplasms therapy, Esophagectomy methods, Neoplasm Recurrence, Local, Lymphatic Metastasis
- Abstract
Although esophageal cancers invading the muscularis mucosa (pT1a-MM) or submucosa (pT1b-SM) after endoscopic resection (ER) are associated with a risk of lymph node metastasis, details of metastatic recurrence after additional treatment remain unknown. We aimed to identify the risk factors for metastatic recurrence and recurrence patterns in patients receiving additional treatment after ER for esophageal cancer. Between 2006 and 2017, patients with pT1a-MM/pT1b-SM esophageal cancer who underwent ER with additional treatment (esophagectomy, chemoradiotherapy [CRT], and radiation therapy) at 21 institutions in Japan were enrolled. We evaluated the risk factors for metastatic recurrence after ER with additional treatment. Subsequently, the rate and pattern (locoregional or distant) of metastatic recurrence were investigated for each additional treatment. Of the 220 patients who received additional treatment, 57, 125, and 38 underwent esophagectomy, CRT, and radiation therapy, respectively. In the multivariate analysis, lymphatic invasion was the sole risk factor for metastatic recurrence after additional treatment (hazard ratio, 3.50; P = 0.029). Although the risk of metastatic recurrence with additional esophagectomy was similar to that with CRT (hazard ratio, 1.01; P = 0.986), the rate of locoregional recurrence tended to be higher with additional esophagectomy (80.0% (4/5) vs. 36.4% (4/11)), leading to a better prognosis in patients with metastatic recurrence after additional esophagectomy than CRT (survival rate, 80.0% (4/5) vs. 9.1% (1/11)). Patients with lymphatic invasion have a high risk of metastatic recurrence after ER with additional treatment for pT1a-MM/pT1b-SM esophageal cancer. Additional esophagectomy may result in a better prognosis after metastatic recurrence., (© The Author(s) 2024. Published by Oxford University Press on behalf of International Society for Diseases of the Esophagus. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.)
- Published
- 2024
- Full Text
- View/download PDF
12. Definitive-dose adjuvant radiotherapy following endoscopic submucosal dissection for superficial esophageal cancer.
- Author
-
Wada Y, Kumagai S, Takagi N, Shinozaki T, Murata T, Sugawara D, Watanabe K, Matsuhashi T, Iijima K, and Mori N
- Abstract
Background: Prophylactic chemoradiation therapy (CRT) using 40-41.4 Gy post-endoscopic submucosal dissection (ESD) for clinical T1N0M0 esophageal cancer reportedly yields favorable outcomes. However, it cannot completely prevent locoregional lymph node (LN) metastases. We retrospectively analyzed outcomes and adverse events associated with our dose-escalated treatment regimen (definitive-dose radiotherapy [RT] of 50-61.2 Gy, with/without chemotherapy) for these patients, and predictors of progression-free survival (PFS) and overall survival (OS)., Methods: Between 2006 and 2018, 44 consecutive patients (42 men and 2 women; median age, 70 years) who underwent definitive-dose RT post-ESD and had a pathological depth of the muscularis mucosa with lymphovascular invasion (LVI) or the upper-middle submucosal third at our institution were included. We excluded patients who could not obtain a margin-free resection by ESD. If feasible, systemic chemotherapy with 5-fluorouracil plus high- or low-dose cisplatin or nedaplatin was administered concurrently., Results: Five-year PFS, OS, and disease-specific survival rates were 78.8%, 88.4%, and 97.7%, respectively. Six metachronous esophagus (14%), two locoregional LN within the irradiated area with a prophylactic dose of 41.4 Gy (5%), and two locoregional LN plus liver (5%) recurrences occurred. No LN recurrence occurred within the definitive dose of ≥ 50 Gy in the irradiated area. Metachronous esophageal recurrence involved areas receiving ≥ 50 Gy. Univariate and multivariate analyses revealed that age was an independent prognostic factor for both PFS and OS., Conclusions: Definitive-dose RT/CRT post-ESD could provide favorable locoregional LN control and PFS/OS regardless of patient characteristics, including pathological findings and chemotherapy regimen/course, except for age. These results need to be interpreted carefully given several limitations, therefore, definitive-dose RT/CRT should be conducted with caution in clinical practice until high-quality prospective clinical trials evaluating the effectiveness and safety., (© 2024. Japanese Society of Gastroenterology.)
- Published
- 2024
- Full Text
- View/download PDF
13. Comparing the effectiveness of universal admission testing and risk-based testing at emergency admission for preventing nosocomial COVID-19: a multicenter retrospective cohort study in Japan.
- Author
-
Iijima K, Osako H, and Iwata K
- Abstract
Objective: To compare the effectiveness of universal admission testing (UAT) and risk-based testing (RBT) in preventing nosocomial coronavirus disease 2019 (COVID-19) after the implementation of strict infection control measures., Design: Retrospective multicenter cohort study., Setting: Five community hospitals in Japan., Patients: 14,028 adult patients admitted emergently from June 1, 2022, to January 31, 2023., Methods: We calculated crude incidence density rates of community-acquired COVID-19 (positive test ≤4 days postadmission), hospital-acquired COVID-19 (positive test ≥8 days postadmission), total postadmission COVID-19 (all cases of positive test postadmission), and primary cases (sporadic and index cases). A generalized estimating equation model was used to adjust for local incidence (new COVID-19 patients per 100,000 population), single-bed room proportion, and admission proportion of patients older than 65 years., Results: The weekly local incidence in the study areas was less than 1,800 per 100,000 population (1.8%). Two hospitals implemented RBT and 3 implemented UAT. The median admission testing rate was higher in the UAT group than in the RBT group (95% vs 55%; difference 45.2%, 95% CI, 40.3%-48.8%). Crude and adjusted analyses revealed no significant associations between incidence density rates (IRR; >1 indicates higher incidence with UAT) and admission strategies for any of the outcomes: community-acquired cases (adjusted IRR = 1.23; 95% CI, 0.46-3.31), hospital-acquired cases (1.46; 0.80-2.66), total postadmission COVID-19 (1.22; 0.79-1.87), and primary cases (0.81; 0.59-1.12)., Conclusions: Compared with risk-based testing, universal admission testing may have limited additional benefits in preventing nosocomial COVID-19 transmission during a period of low-moderate local incidence.
- Published
- 2024
- Full Text
- View/download PDF
14. IPNA consensus definitions for clinical trial outcomes in steroid-resistant nephrotic syndrome.
- Author
-
Hari P, Khandelwal P, Boyer O, Bhimma R, Cano F, Christian M, Duzova A, Iijima K, Kang HG, Qian S, Safouh H, Samuels S, Smoyer WE, Vivarelli M, Bagga A, and Schaefer F
- Abstract
Assessment of the true impact of therapeutic interventions is a challenge in the absence of universal, standardized definitions for clinical trial endpoints in children with kidney diseases. Steroid-resistant nephrotic syndrome (SRNS) is a difficult kidney disease to treat, with unremitting disease progressing to kidney failure. Currently, available therapies result in suboptimal cure rates. Clinical trials with innovative, targeted treatments will likely be conducted for this disease in the foreseeable future. An international consortium of the IPNA Best Practices and Standards Committee and the Pediatric Nephrology Expert Group of the conect4children (c4c) network developed through consensus, standardized, internationally acceptable definitions for trial outcomes for SRNS. The endpoint definitions were formulated for use with urine protein to creatinine ratios and estimated glomerular filtration rates. Definitions of complete remission, partial remission, non-remission of disease, reduction in proteinuria, kidney disease progression, kidney failure, and composite kidney outcome were refined using an iterative process until a consensus was achieved., (© 2024. The Author(s), under exclusive licence to International Pediatric Nephrology Association.)
- Published
- 2024
- Full Text
- View/download PDF
15. Comparison of Cancer Worries for Gastric Cancer by Helicobacter Pylori Infection Status at Health Check-Up Setting in Japan.
- Author
-
Fukuda S, Watanabe K, Fujimori S, Komatsu T, Yoshida T, Kuramitsu T, Shimodaira Y, Matsuhashi T, and Iijima K
- Published
- 2024
- Full Text
- View/download PDF
16. Association of oral hypofunction with aspiration pneumonia, fractures, and mortality in older Japanese adults.
- Author
-
Sakai K, Hayashi K, Hoshino E, Nakayama E, Iijima K, Tanaka T, Momosaki R, and Sakata N
- Subjects
- Humans, Japan epidemiology, Aged, Male, Female, Retrospective Studies, Aged, 80 and over, Incidence, Spinal Fractures mortality, Spinal Fractures complications, Cohort Studies, Femoral Fractures mortality, Femoral Fractures complications, Proportional Hazards Models, East Asian People, Pneumonia, Aspiration mortality, Pneumonia, Aspiration epidemiology
- Abstract
Aim: In Japan's public health system, dentists can assess and intervene in oral hypofunction cases. However, the associations between oral hypofunction and health outcomes and costs remain unclear. This study aimed to identify these associations., Methods: This retrospective cohort study using a Japanese health insurance claims database included 45 916 individuals aged ≥65 years who underwent dental examinations for oral hypofunction. The primary outcomes were incidence rates of aspiration pneumonia, femoral or vertebral fractures and all-cause mortality. Secondary outcomes were annual medical and dental costs. We used competing risk regression and Cox models to estimate primary outcomes, and gamma regression models for secondary outcomes., Results: The adjusted hazard ratios were 0.84 (95% CI 0.74-0.96) for the incidence of aspiration pneumonia, 1.11 (1.02-1.21) for the incidence of femoral or vertebral fractures and 1.27 (1.07-1.50) for all-cause mortality in individuals with oral hypofunction compared with those without. The adjusted relative risk was 1.05 (1.01-1.10) for annual medical costs and 0.94 (0.81-1.09) for annual dental costs in individuals with oral hypofunction compared with those without., Conclusions: Individuals with oral hypofunction were at increased risk of femoral or vertebral fractures and all-cause mortality, and they incurred significantly higher annual medical costs, compared with those without this condition. Notably, they showed a lower risk of aspiration pneumonia, suggesting potential benefits of dental intervention. Integrating dental care into medical strategies might be necessary to improve health outcomes and reduce healthcare costs for those with oral hypofunction. Geriatr Gerontol Int 2024; 24: 1053-1059., (© 2024 Japan Geriatrics Society.)
- Published
- 2024
- Full Text
- View/download PDF
17. Oral mucosa effectively protects against peanut allergy in mice.
- Author
-
Yoshida Y, Iijima K, Matsunaga M, Masuda MY, Jheng MJ, Kobayashi T, and Kita H
- Subjects
- Animals, Mice, Female, Disease Models, Animal, Anaphylaxis prevention & control, Anaphylaxis immunology, Humans, Administration, Sublingual, T Follicular Helper Cells immunology, Peanut Hypersensitivity immunology, Peanut Hypersensitivity prevention & control, Mice, Inbred BALB C, Immunoglobulin E immunology, Immunoglobulin E blood, Mouth Mucosa immunology, Arachis immunology, Allergens immunology
- Abstract
Background: Oral consumption of peanut products early in life reduces the incidence of peanut allergy in children. However, little is known about whether exposure via the oral mucosa alone is sufficient or whether the gastrointestinal tract must be engaged to protect against peanut allergy., Objective: We used a mouse model and examined the effects of peanut allergen administration to only the oral cavity on allergy development induced by environmental exposure., Methods: Naive BALB/c mice were administered peanut flour (PNF) sublingually, followed by epicutaneous exposure to PNF to mimic a human condition. The sublingual volume was adjusted to engage only the oral cavity and prevent it from reaching the esophagus or gastrointestinal tract. The efficacy was evaluated by examining the anaphylactic response, antibody titers, and T follicular helper cells., Results: The mice exposed epicutaneously to PNF developed peanut allergy, as demonstrated by increased plasma levels of peanut-specific IgE and the manifestation of acute systemic anaphylaxis following intraperitoneal challenge with peanut extract. The development of peanut allergy was suppressed when mice had been given PNF sublingually before epicutaneous exposure. There were fewer T follicular helper cells in the skin-draining lymph nodes of mice that received sublingual PNF than in the mice that received PBS. Suppression of IgE production was observed with sublingual PNF at 1/10 of the intragastric PNF dose., Conclusion: Administration of peanut allergens only to the oral cavity effectively prevents the development of peanut allergy. The capacity of the oral mucosa to promote immunologic tolerance needs to be evaluated further to prevent food allergy., (Copyright © 2024 American Academy of Allergy, Asthma & Immunology. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
18. Cancer risk by length of Barrett's esophagus in Japanese population: a nationwide multicenter retrospective cohort study.
- Author
-
Fukuda S, Watanabe K, Kubota D, Yamamichi N, Takahashi Y, Watanabe Y, Adachi K, Ishimura N, Koike T, Sugawara H, Asanuma K, Abe Y, Kon T, Ihara E, Haraguchi K, Otsuka Y, Yoshimura R, Iwaya Y, Okamura T, Manabe N, Horiuchi A, Matsumoto M, Onochi K, Takahashi S, Yoshida T, Shimodaira Y, and Iijima K
- Subjects
- Humans, Retrospective Studies, Male, Female, Japan epidemiology, Middle Aged, Aged, Incidence, Risk Factors, Follow-Up Studies, Esophagoscopy, Adult, East Asian People, Barrett Esophagus epidemiology, Esophageal Neoplasms epidemiology, Adenocarcinoma epidemiology
- Abstract
Background: The cancer risk for each length of Barrett's esophagus (BE) in Japanese is unknown. This nationwide, multi-institutional study aims to clarify the cancer risk by length of BE in the general Japanese population., Methods: Consecutive subjects who underwent upper endoscopic screening at 17 centers between 2013 and 2017 and had at least one follow-up endoscopy by December 2022 were included. The presence/absence of BE and, if present, its length were retrospectively assessed using the retrieved endoscopic images recorded at baseline. Information on the subsequent occurrence of esophageal adenocarcinoma and other upper gastrointestinal cancers was also collected. Cancer incidence was calculated and expressed as %/year., Results: A total of 33,478 subjects were enrolled, and 17,884 (53.4%), 10,641 (31.8%), 4889 (14.6%), and 64 (0.2%) were diagnosed as absent BE, BE < 1 cm, 1-3 cm, and ≥ 3 cm, respectively. During a median follow-up of 80 months, 11 cases of esophageal adenocarcinoma developed. The annual incidence of esophageal adenocarcinoma is 0%/year for absent BE, 0.0032 (0.00066-0.013)%/year for BE < 1 cm, 0.026 (0.011-0.054)%/year for 1-3 cm, and 0.58 (0.042-2.11)%/year for ≥ 3 cm, respectively. Meanwhile, the incidence of esophageal squamous cell carcinoma and gastric cancer were 0.039 (0.031-0.049)%/year and 0.16 (0.14-0.18)%/year, respectively., Conclusions: By enrolling a large number of subjects with long-term follow-up, this study demonstrated that the risk of cancer increased steadily with increasing length of BE in the Japanese population. Therefore, it is important to consider the length of BE when determining the management strategy for BE., (© 2024. Japanese Society of Gastroenterology.)
- Published
- 2024
- Full Text
- View/download PDF
19. Clinical impact of cryoballoon posterior wall isolation using the cross-over technique in persistent atrial fibrillation.
- Author
-
Odagiri F, Tokano T, Miyazaki T, Hirabayashi K, Ishi K, Abe H, Ishiwata S, Kakihara M, Maki M, Matsumoto H, Shimai R, Aikawa T, Takano S, Kimura Y, Kuroda S, Isogai H, Ozaki D, Shiozawa T, Yasuda Y, Takasu K, Iijima K, Takamura K, Matsubara T, Tabuchi H, Hayashi H, Yokoyama K, Sekita G, Sumiyoshi M, Nakazato Y, and Minamino T
- Subjects
- Humans, Male, Female, Retrospective Studies, Middle Aged, Treatment Outcome, Aged, Atrial Fibrillation surgery, Cryosurgery methods, Pulmonary Veins surgery
- Abstract
Background and Aims: Successful left atrial posterior wall isolation (LAPWI) using only the cryoballoon (CB) is technically challenging for the treatment of atrial fibrillation (AF). This study aimed to evaluate the efficacy of the cross-over technique, wherein an overlapped ablation is performed by placing the CB from both directions in contact with the LAPW., Methods: This was a single-center, retrospective, observational study of 194 consecutive patients with persistent atrial fibrillation (PerAF) who underwent a first-time procedure of pulmonary vein isolation (PVI) + PWI (108 patients) or PVI-only (86 patients) using the CB. The cross-over technique was applied in all LAPWI., Results: For ablation of the LA roof and bottom, respectively, a mean of 8.6 ± 1.0 (right to left [R→L] 4.3 ± 1.1 and left to right [L→R] 4.3 ± 1.1) and 9.1 ± 1.2 (R→L 4.6 ± 1.6 and L→R 4.5 ± 1.2) CB applications were delivered. LAPW was successfully isolated solely using the CB in 99.1% of patients. Although the PVI + PWI group had significantly longer procedure time, no severe adverse events were observed in either group. During a median follow-up of 19 months, freedom from recurrence of all atrial tachyarrhythmias was achieved in 93.5% of the PVI + PWI group and 72.9% of the PVI-only group (p = .011)., Conclusions: LAPWI performed solely with the CB using the cross-over technique is feasibly, safe, and was independently associated with a significantly higher freedom from recurrence of atrial tachyarrhythmias compared with PVI alone in patients with PerAF., (© 2024 The Author(s). Pacing and Clinical Electrophysiology published by Wiley Periodicals LLC.)
- Published
- 2024
- Full Text
- View/download PDF
20. Development of a prediction score for Barrett's esophagus in Japanese health checkup settings.
- Author
-
Kodama S, Watanabe K, Shimodaira Y, Fukuda S, Yoshida T, Saruta Y, Okubo R, Matsuhashi T, Komatsu T, and Iijima K
- Subjects
- Humans, Male, Japan epidemiology, Female, Middle Aged, Retrospective Studies, Aged, Risk Assessment methods, Adult, Sensitivity and Specificity, Esophagoscopy methods, Risk Factors, Adenocarcinoma epidemiology, Adenocarcinoma diagnosis, Adenocarcinoma pathology, Incidence, Predictive Value of Tests, Precancerous Conditions epidemiology, Precancerous Conditions diagnosis, Precancerous Conditions pathology, East Asian People, Barrett Esophagus epidemiology, Barrett Esophagus pathology, Barrett Esophagus diagnosis, Esophageal Neoplasms epidemiology, Esophageal Neoplasms diagnosis, Esophageal Neoplasms pathology
- Abstract
Background: The incidence of esophageal adenocarcinoma has recently increased in Asia, including Japan. A system to identify individuals at high risk for Barrett's esophagus (BE), a pre-cancerous condition of esophageal adenocarcinoma, among the general population is needed to perform endoscopic surveillance appropriately. We therefore developed risk prediction scores for BE at health checkups in Japan., Methods: 4128 consecutive health checkup examinees were retrospectively enrolled from October 2021 to March 2022. A prediction score for BE was developed based on the linear transformation of β-regression coefficients in a multivariable regression model incorporating BE predictors. Internal validation was performed by evaluating discrimination and calibration of the prediction model., Results: Three prediction scores corresponding to BE based on its length were developed: all lengths, ≥ 1 cm, ≥ 2 cm. All scores were internally validated, and the model calibration was excellent. The performance of the prediction models was better for longer BE, with a c-statistic of 0.70 for BE ≥ 2 cm, than for shorter values. The prediction score for BE ≥ 2 cm yielded sensitivity and specificity of 52.9% and 78.6% in high-risk subjects and 91.2% and 29.3% in intermediate- or high-risk subjects, respectively., Conclusions: This prediction score can potentially increase the endoscopic detection of BE by identifying potentially high-risk individuals from the general population. This is the first report on developing a prediction score for BE that may suit the Japanese population., (© 2024. The Author(s) under exclusive licence to The Japan Esophageal Society.)
- Published
- 2024
- Full Text
- View/download PDF
21. Evaluation of the applicability of weak shoulder and arm sparing signs in amyotrophic lateral sclerosis by multiple neurologists and neurology residents: A single-center study.
- Author
-
Sanpei Y, Yasuda K, Takahashi Y, Hanazono A, Sugawara M, and Iijima K
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Retrospective Studies, Internship and Residency, Neurology education, Muscle, Skeletal physiopathology, Adult, Sensitivity and Specificity, Aged, 80 and over, Amyotrophic Lateral Sclerosis diagnosis, Amyotrophic Lateral Sclerosis physiopathology, Shoulder physiopathology, Arm physiopathology, Neurologists, Muscle Weakness diagnosis, Muscle Weakness physiopathology
- Abstract
Introduction/aims: Amyotrophic lateral sclerosis (ALS) exhibits selective muscle weakness. The weak shoulder and arm sparing signs, assessed by a single experienced neurologist, have been reported to be superior to previous signs in sensitivity and specificity. However, it is unknown whether the same results are observed when assessed by multiple neurologists., Methods: Subjects were retrospectively identified from our department's inpatient database from 2014 to 2023. Medical Research Council (MRC) scores of the deltoid (Del), biceps brachii (BB), triceps brachii (TB), and first dorsal interosseous (FDI) muscles were evaluated. The weak shoulder sign was defined as positive when Del was weaker than BB and TB. The arm sparing sign was defined as positive when both Del and FDI were weaker than BB and TB. Sensitivity was analyzed in all ALS patients and in subgroups based on the region of symptom onset, presence or absence of upper motor neuron (UMN) signs, and the Japanese ALS Severity Classification., Results: Seventy-one patients with ALS were identified. Eight neurologists and three neurology residents evaluated each patient's MRC scores. The weak shoulder and arm sparing signs were observed in 72% and 48% of patients, respectively, with no significant difference in sensitivity across patient subgroups., Discussion: The weak shoulder and arm sparing signs showed high and moderate sensitivity, respectively, consistent with a previous report, even when evaluated by multiple examiners. This expands the clinical utility and increases the reliability of these signs, potentially contributing to accurate ALS diagnosis when combined with other clinical features and objective assessments., (© 2024 The Author(s). Muscle & Nerve published by Wiley Periodicals LLC.)
- Published
- 2024
- Full Text
- View/download PDF
22. Is blue light imaging without magnification satisfactory as screening for esophageal squamous cell carcinoma? Post-hoc analysis of multicenter randomized controlled trial.
- Author
-
Ogata Y, Hatta W, Koike T, Takahashi S, Matsuhashi T, Iwai W, Asonuma S, Okata H, Ohyauchi M, Ito H, Abe Y, Sasaki Y, Kawamura M, Saito M, Uno K, Fujishima F, Nakamura T, Nakaya N, Iijima K, and Masamune A
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Early Detection of Cancer methods, Sensitivity and Specificity, Blue Light, Esophageal Neoplasms diagnosis, Esophageal Neoplasms diagnostic imaging, Esophageal Squamous Cell Carcinoma diagnostic imaging, Esophageal Squamous Cell Carcinoma diagnosis, Narrow Band Imaging methods, Esophagoscopy methods
- Abstract
Objectives: Narrow light observation is currently recommended as an alternative to Lugol chromoendoscopy (LCE) to detect esophageal squamous cell carcinoma (ESCC). Studies revealed little difference in sensitivity between the two modalities in expert settings; however, these included small numbers of cases. We aimed to determine whether blue light imaging (BLI) without magnification is satisfactory for preventing misses of ESCC., Methods: This was a post-hoc analysis of a multicenter randomized controlled trial targeting patients at high risk of ESCC in expert settings. In this study, BLI without magnification followed by LCE was performed. The evaluation parameters included: (i) the diagnostic abilities of ESCC; (ii) the endoscopic characteristics of lesions with diagnostic differences between the two modalities; and (iii) the color difference between cancerous and noncancerous areas in BLI and LCE., Results: This study identified ESCC in 49 of 699 cases. Of these cases, nine (18.4%) were missed by BLI but detected by LCE. In per-patient analysis, the sensitivity of BLI was lower than that of LCE following BLI (83.7% vs. 100.0%; P = 0.013), whereas the specificity and accuracy of BLI were higher (88.2% vs. 81.2%; P < 0.001 and 87.8% vs. 82.5%; P < 0.001, respectively). No significant endoscopic characteristics were identified, but the color difference was lower in BLI than in LCE (21.4 vs. 25.1; P = 0.003)., Conclusion: LCE following BLI outperformed BLI in terms of sensitivity in patients with high-risk ESCC. Therefore, LCE, in addition to BLI, would still be required in screening esophagogastroduodenoscopy even by expert endoscopists., (© 2024 Japan Gastroenterological Endoscopy Society.)
- Published
- 2024
- Full Text
- View/download PDF
23. Evaluating the discrepancies between evidence-based and community standard practices in the endoscopic diagnosis of esophageal squamous cell carcinoma: a survey study.
- Author
-
Ishihara R, Hikichi T, Iwaya Y, Iijima K, Imagawa A, Mabe K, Ito N, Suga T, Iizuka T, Nishida T, Furumoto Y, Muto M, and Takeuchi H
- Abstract
Background: The practice of endoscopic diagnosis of esophageal squamous cell carcinoma (ESCC) often diverges from evidence-based standards due to various factors, including inadequate dissemination of evidence or a mismatch between evidence and real-world contexts. This survey aimed to identify discrepancies between evidence-based standard practices and community standard practices for ESCC among endoscopists., Methods: An online survey targeting endoscopists who perform upper gastrointestinal endoscopy at least weekly was conducted to collect data on clinical practices related to ESCC diagnosis. The survey, comprising 20 questions, was disseminated through multiple professional networks. Descriptive statistical analysis and logistic regression were performed to analyze the data., Results: Data from 819 endoscopists were included in the analyses. Notably, a significant proportion employed narrow-band imaging/blue-laser imaging over iodine staining, and preferences varied based on risk assessment for ESCC. In total, 64.0% of endoscopists primarily used iodine solution at a concentration of 1% or less, while 96.5% of endoscopists performed an observation of the oral cavity and the pharynx when conducting upper gastrointestinal endoscopies on individuals at high risk of ESCC. The surveillance interval for metachronous multiple ESCCs was most commonly every 6 months, followed by every 12 months. In addition, most physicians conducted surveillance of metastatic recurrence at 6-month intervals., Conclusions: This survey highlights significant gaps between evidence-based and community standard practices in the endoscopic diagnosis of ESCC. These findings underscore the need for enhanced dissemination of evidence-based guidelines and consideration of real-world clinical contexts to bridge these gaps and optimize patient care., (© 2024. The Author(s) under exclusive licence to The Japan Esophageal Society.)
- Published
- 2024
- Full Text
- View/download PDF
24. Analysis of human errors in the operation of various treatment planning systems over a 10-year period.
- Author
-
Iijima K, Nakayama H, Nakamura S, Chiba T, Shuto Y, Urago Y, Nishina S, Kishida H, Kobayashi Y, Takatsu J, Kuwahara J, Aikawa A, Goka T, Kaneda T, Murakami N, Igaki H, and Okamoto H
- Subjects
- Humans, Workload, Medical Errors prevention & control, Radiotherapy Planning, Computer-Assisted
- Abstract
The present study aimed to summarize and report data on errors related to treatment planning, which were collected by medical physicists. The following analyses were performed based on the 10-year error report data: (1) listing of high-risk errors that occurred and (2) the relationship between the number of treatments and error rates, (3) usefulness of the Automated Plan Checking System (APCS) with the Eclipse Scripting Application Programming Interface and (4) the relationship between human factors and error rates. Differences in error rates were observed before and after the use of APCS. APCS reduced the error rate by ~1% for high-risk errors and 3% for low-risk errors. The number of treatments was negatively correlated with error rates. Therefore, we examined the relationship between the workload of medical physicists and error occurrence and revealed that a very large workload may contribute to overlooking errors. Meanwhile, an increase in the number of medical physicists may lead to the detection of more errors. The number of errors was correlated with the number of physicians with less clinical experience; the error rates were higher when there were more physicians with less experience. This is likely due to the lack of training among clinically inexperienced physicians. An environment to provide adequate training is important, as inexperience in clinical practice can easily and directly lead to the occurrence of errors. In any environment, the need for additional plan checkers is an essential factor for eliminating errors., (© The Author(s) 2024. Published by Oxford University Press on behalf of The Japanese Radiation Research Society and Japanese Society for Radiation Oncology.)
- Published
- 2024
- Full Text
- View/download PDF
25. Supplementation with Lactobacillus helveticus NS8 alleviated behavioral, neural, endocrine, and microbiota abnormalities in an endogenous rat model of depression.
- Author
-
Alatan H, Liang S, Shimodaira Y, Wu X, Hu X, Wang T, Luo J, Iijima K, and Jin F
- Subjects
- Animals, Rats, Male, Behavior, Animal, Rats, Wistar, Gastrointestinal Microbiome drug effects, Lactobacillus helveticus, Probiotics administration & dosage, Probiotics therapeutic use, Disease Models, Animal, Rats, Inbred WKY, Depression immunology, Depression metabolism, Brain-Gut Axis
- Abstract
Introduction: Major depressive disorder is a condition involving microbiota-gut-brain axis dysfunction. Increasing research aims to improve depression through gut microbiota regulation, including interventions such as probiotics, prebiotics, and fecal microbiota transplants. However, most research focuses on exogenous depression induced by chronic stress or drugs, with less attention given to endogenous depression. Additionally, research on gut mycobiota in depression is significantly less than that on gut bacteria., Methods: In the present study, Wistar-Kyoto rats were used as an endogenous depression and treatment-resistant depression model, while Wistar rats served as controls. Differences between the two rat strains in behavior, gut bacteria, gut mycobiota, nervous system, endocrine system, immune system, and gut barrier were evaluated. Additionally, the effects of Lactobacillus helveticus NS8 supplementation were investigated., Results: Wistar-Kyoto rats demonstrated increased depressive-like behaviors in the forced swimming test, reduced sucrose preference in the sucrose preference test, and decreased locomotor activity in the open field test. They also exhibited abnormal gut bacteria and mycobiota, characterized by higher bacterial α-diversity but lower fungal α-diversity, along with increased butyrate, L-tyrosine, and L-phenylalanine biosynthesis from bacteria. Furthermore, these rats showed dysfunction in the microbiota-gut-brain axis, evidenced by a hypo-serotonergic system, hyper-noradrenergic system, defective hypothalamic-pituitary-adrenal axis, compromised gut barrier integrity, heightened serum inflammation, and diminished gut immunity. A 1-month L. helveticus NS8 intervention increased the fecal abundance of L. helveticus ; reduced the abundance of Bilophila and Debaryomycetaceae; decreased immobility time but increased climbing time in the forced swimming test; reduced hippocampal corticotropin-releasing hormone levels; decreased hypothalamic norepinephrine levels; increased hippocampal glucocorticoid receptor, brain-derived neurotrophic factor dopamine, and 5-hydroxyindoleacetic acid content; and improved the gut microbiota, serotonergic, and noradrenergic system., Conclusion: The depressive phenotype of Wistar-Kyoto rats is not only attributed to their genetic context but also closely related to their gut microbiota. Abnormal gut microbiota and a dysfunctional microbiota-gut-brain axis play important roles in endogenous depression, just as they do in exogenous depression. Supplementing with probiotics such as L. helveticus NS8 is likely a promising approach to improve endogenous depression and treatment-resistant depression., Competing Interests: SL is employed by NS Bio Japan Akita, Japan at present time and declared no non-financial competing interests. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Alatan, Liang, Shimodaira, Wu, Hu, Wang, Luo, Iijima and Jin.)
- Published
- 2024
- Full Text
- View/download PDF
26. Estimation of the Cognitive Functioning of the Elderly by AI Agents: A Comparative Analysis of the Effects of the Psychological Burden of Intervention.
- Author
-
Igarashi T, Iijima K, Nitta K, and Chen Y
- Abstract
In recent years, an increasing number of studies have begun to use conversational data in spontaneous speech to estimate cognitive function in older people. The targets of spontaneous speech with older people used to be physicians and licensed psychologists, but it is now possible to have conversations with fully automatic AI agents. However, it has not yet been clarified what difference there is in conversational communication with older people when the examiner is a human or an AI agent. This study explored the psychological burden experienced by elderly participants during cognitive function assessments, comparing interactions with human and AI conversational partners. Thirty-four participants, averaging 78.71 years of age, were evaluated using the Mini-Mental State Examination (MMSE), the Visual Analogue Scale (VAS), and the State-Trait Anxiety Inventory (STAI). The objective was to assess the psychological impact of different conversational formats on the participants. The results indicated that the mental strain, as measured by VAS and STAI scores, was significantly higher during the MMSE sessions compared to other conversational interactions ( p < 0.01). Notably, there was no significant difference in the mental burden between conversations with humans and AI agents, suggesting that AI-based systems could be as effective as human interaction in cognitive assessments.
- Published
- 2024
- Full Text
- View/download PDF
27. Prevalence and Distribution of Gastric Endoscopy Findings in Non-eosinophilic Esophagitis Eosinophilic Gastrointestinal Diseases: Influence of Atrophic Gastritis.
- Author
-
Mizumoto N, Abe Y, Sasaki Y, Yagi M, Onozato Y, Takahashi Y, Ara N, Nomura E, Kawamura M, Takahashi S, Asonuma S, Shoji M, Kondo Y, Iwai W, Kikuchi R, Saito M, Hatta W, Koike T, Matsuhashi T, Iijima K, Masamune A, and Ueno Y
- Abstract
Objective The impact of Helicobacter pylori infection on gastric endoscopic findings in non-eosinophilic esophagitis eosinophilic gastrointestinal diseases (non-EoE EGIDs) remains unclear. This study investigated the influence of H. pylori infection on the prevalence and distribution of gastric lesions. Methods The details of 75 patients diagnosed with non-EoE EGIDs were retrospectively reviewed. Of the 56 patients with a definitive diagnosis according to the Japanese criteria (any GI tract; ≥20 eosinophils/high-power field), 25 patients with pathologic gastric eosinophil infiltration (gastric EI; ≥30 eosinophils/high-power field) were investigated in detail. The prevalence and distribution of gastric endoscopy findings were assessed according to the gastric mucosal atrophy status, an indicator of H. pylori infection. Results Erythema (76%) was the most common finding in the gastric EI-positive group, followed by erosions (36%), ulcers (28%), ulcer scars (28%), and edema (24%). None of these lesions differed significantly in frequency between the patients with and without gastric atrophy. When erosions, ulcers, and ulcer scars were unified, they were slightly more common in the gastric bodies of patients with gastric atrophy than those without gastric atrophy; however, no preferential site was found in those without gastric atrophy. We identified six patients with active gastric ulcers, and half had large, deep ulcers with marginal swelling/irregularity. Conclusion Gastric endoscopy findings in non-EoE EGIDs with gastric EI were evenly observed in the stomach, with no specific trend in frequency or distribution depending on atrophic gastritis, an indicator of H. pylori infection. Gastric ulcers in patients with non-EoE EGIDs should be considered in the differential diagnosis of idiopathic peptic ulcers.
- Published
- 2024
- Full Text
- View/download PDF
28. Detailed Analysis of Responses from Older Adults through Natural Speech: Comparison of Questions by AI Agents and Humans.
- Author
-
Igarashi T, Iijima K, Nitta K, and Chen Y
- Subjects
- Humans, Female, Male, Aged, Aged, 80 and over, Cognition drug effects, Artificial Intelligence, Communication, Japan, Speech
- Abstract
In recent years, an increasing number of studies have begun to use conversational data in spontaneous speech to estimate cognitive function in older people. The providers of spontaneous speech with older people used to be physicians and licensed psychologists, but it is now possible to have conversations with fully automatic AI agents. However, it has not yet been clarified what differences exist in conversational communication with older people when the examiner is either a human or an AI agent. In this study, elderly people living in the community and attending a silver human resource center and a day service center were the subjects. Dialogues were conducted using generic interview items for estimating cognitive function through daily conversation, which were developed through research on estimation methods for cognitive function. From the data obtained from the dialogues, we compared the effects of human-AI interaction on the number of utterances, speaking time, and silence time. This study was conducted at a facility in Japan and included 32 subjects (12 males and 20 females). The results showed significant differences between human and AI dialogue in the number of utterances and silent time. This study suggests the effectiveness of AI in communication with older people and explores the possibility of using AI in social welfare.
- Published
- 2024
- Full Text
- View/download PDF
29. Plan complexity metrics for head and neck VMAT competition plans.
- Author
-
Okamoto H, Wakita A, Tani K, Kito S, Kurooka M, Kodama T, Tohyama N, Fujita Y, Nakamura S, Iijima K, Chiba T, Nakayama H, Murata M, Goka T, and Igaki H
- Subjects
- Humans, Quality Assurance, Health Care, Radiotherapy, Intensity-Modulated methods, Radiotherapy Planning, Computer-Assisted methods, Head and Neck Neoplasms radiotherapy, Radiotherapy Dosage
- Abstract
Previous plan competitions have largely focused on dose metric assessments. However, whether the submitted plans were realistic and reasonable from a quality assurance (QA) perspective remains unclear. This study aimed to investigate the relationship between aperture-based plan complexity metrics (PCM) in volumetric modulated arc therapy (VMAT) competition plans and clinical treatment plans verified through patient-specific QA (PSQA). In addition, the association of PCMs with plan quality was examined. A head and neck (HN) plan competition was held for Japanese institutions from June 2019 to July 2019, in which 210 competition plans were submitted. Dose distribution quality was quantified based on dose-volume histogram (DVH) metrics by calculating the dose distribution plan score (DDPS). Differences in PCMs between the two VMAT treatment plan groups (HN plan competitions held in Japan and clinically accepted HN VMAT plans through PSQA) were investigated. The mean (± standard deviation) DDPS for the 98 HN competition plans was 158.5 ± 20.6 (maximum DDPS: 200). DDPS showed a weak correlation with PCMs with a maximum r of 0.45 for monitor unit (MU); its correlation with some PCMs was "very weak." Significant differences were found in some PCMs between plans with the highest 20% DDPSs and the remaining plans. The clinical VMAT and competition plans revealed similar distributions for some PCMs. Deviations in PCMs for the two groups were comparable, indicating considerable variability among planners regarding planning skills. The plan complexity for HN VMAT competition plans increased for high-quality plans, as shown by the dose distribution. Direct comparison of PCMs between competition plans and clinically accepted plans showed that the submitted HN VMAT competition plans were realistic and reasonable from the QA perspective. This evaluation may provide a set of criteria for evaluating plan quality in plan competitions., Competing Interests: Conflict of Interest There are no ethical issues concerning this manuscript. Mr. Akihisa Wakita received a research grant from the Japanese Society for Radiation Oncology (JASTRO); Dr. Hiroshi Igaki received a research grant from HekaBio K.K. honoraria for lectures from Itochu corporation and AstraZeneca, and personal fee from Hekabio., (Copyright © 2024 American Association of Medical Dosimetrists. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
30. Dosimetric impact of the respiratory motion of the liver dome in stereotactic body radiotherapy for spine metastasis: A planning study.
- Author
-
Okamoto H, Nonaka M, Chiba T, Kaneda T, Kobayashi Y, Nakamura S, Nakayama H, Iijima K, Shuto Y, Yonemura M, Oshika R, Kishida H, Urago Y, Nishitani M, Nishina S, Sakamoto T, Shibata Y, Goka T, and Igaki H
- Subjects
- Humans, Retrospective Studies, Male, Female, Aged, Middle Aged, Movement, Tomography, X-Ray Computed methods, Prognosis, Aged, 80 and over, Radiosurgery methods, Radiotherapy Planning, Computer-Assisted methods, Radiotherapy Dosage, Spinal Neoplasms secondary, Spinal Neoplasms radiotherapy, Spinal Neoplasms surgery, Radiotherapy, Intensity-Modulated methods, Liver diagnostic imaging, Liver radiation effects, Organs at Risk radiation effects, Respiration
- Abstract
Purpose: This study aimed to clarify the dosimetric impact of the respiratory motion of the liver on stereotactic body radiation therapy (SBRT) for spine metastasis and examine the utility of introducing beam avoidance (beam-off at specific gantry angles)., Methods: A total of 112 consecutive patients who underwent SBRT for spine metastasis between 2018 and 2024 were examined. Overall, 15 patients who had lesions near the liver dome were included in this study. Retrospective treatment plans were generated using computed tomography (CT) images acquired during inhalation and exhalation to evaluate the dosimetric impact of respiratory motion of the liver. The dose difference (DD) and relative value (DD%) were evaluated using the dose-volume histogram (DVH) metrics, planning target volume D
max , D95% , spinal cord D0.035 cc , and esophagus D2.5 cc . The magnitude of the liver movements was evaluated based on differences of liver size Lave at the isocentric axial plane between the inspiratory and expiratory CT images., Results: The DD in almost all DVH metrics tended to increase when the liver moved away from the target during inhalation: For example, Mean ± $ \pm $ a standard deviation (SD) DD in PTV D95% for the treatment plan incorporating beam avoidance and those without beam avoidance was 0.5 ± $\pm$ 0.3 and 0.9 ± $ \pm $ 0.6 Gy, respectively. The spinal cord D0.035 cc for those shows 0.4 ± $ \pm $ 0.2 and 0.7 ± $ \pm $ 0.7 Gy, respectively. The treatment plans without beam avoidance also showed moderate or strong correlations between Lave and DD for almost all DVH metrics. No correlation was seen in the beam avoidance plan. The spinal cord D0.035 cc revealed approximately 1 Gy or +4% in DD when Lave was < -4 cm., Conclusions: Respiratory motion of the liver dome can cause substantial dosimetric discrepancies in the dose delivered to the spinal cord, although the extent depends on patient variables. Dose assessment should be performed for determining the appropriate means of respiratory management, such as breath-hold. Alternatively, beam avoidance effectively mitigates the impact., (© 2024 The Author(s). Journal of Applied Clinical Medical Physics published by Wiley Periodicals LLC on behalf of American Association of Physicists in Medicine.)- Published
- 2024
- Full Text
- View/download PDF
31. Development and promotion of a 3D-printed phantom model for ultrasound-guided caudal block followed by intracavitary/interstitial brachytherapy for gynecological cancer.
- Author
-
Kawamoto T, Oshima M, Murakami N, Okonogi N, Muramoto Y, Karino T, Iijima K, Takatsu J, Inoue T, and Shikama N
- Subjects
- Humans, Female, Nerve Block methods, Sacrum diagnostic imaging, Brachytherapy instrumentation, Brachytherapy methods, Printing, Three-Dimensional, Genital Neoplasms, Female radiotherapy, Genital Neoplasms, Female diagnostic imaging, Ultrasonography, Interventional, Phantoms, Imaging
- Abstract
Purpose: We developed a 3D-printed phantom model for ultrasound-guided caudal block for educational or training purposes because there have been no reports of the 3D-printed phantom model for ultrasound-guided caudal block. This study aimed to identify the needs for the phantom model in a lecture and demonstration at hands-on training (HoT) to promote the use of caudal block for sufficient pain control during high-dose-rate intracavitary/interstitial brachytherapy for gynecological cancers., Materials and Methods: The sacrum and formwork were designed by computed tomography imaging. A 3D-modeling software program was used to create the sacrum and formwork. The phantom was solidified by injecting a gelatin-based gel. Ultrasonography was performed to visualize the sacral hiatus and puncture needle in the phantom. In October 2023, 10 radiation oncologists who did not perform caudal block in daily clinical practice from ten Japanese facilities participated in HoT on ultrasound-guided caudal block. After the HoT, questionnaires were distributed to each participant, and feedback was obtained through online channels., Results: After receiving a lecture and demonstration on ultrasound-guided caudal block, 90% of the respondents would like to practice the procedure in their daily clinical practice. Moreover, 100% of the respondents would like to use the 3D-printed phantom model for ultrasound-guided caudal block for educational or training purposes., Conclusion: The 3D-printed phantom model for ultrasound-guided caudal block can be used in training and is in demand for facilities introducing caudal block., (Copyright © 2024 American Brachytherapy Society. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
32. Clinical characteristics and outcomes of immune-complex membranoproliferative glomerulonephritis and C3 glomerulopathy in Japanese children.
- Author
-
Ueda C, Horinouchi T, Inoki Y, Ichikawa Y, Tanaka Y, Kitakado H, Kondo A, Sakakibara N, Nagano C, Yamamura T, Fujimura J, Kamiyoshi N, Ishimori S, Ninchoji T, Kaito H, Shima Y, Iijima K, Nozu K, and Yoshikawa N
- Subjects
- Humans, Child, Male, Female, Retrospective Studies, Japan, Child, Preschool, Adolescent, Biopsy, Kidney pathology, Kidney immunology, Glomerular Filtration Rate, Proteinuria etiology, Proteinuria drug therapy, Follow-Up Studies, Treatment Outcome, East Asian People, Glomerulonephritis, Membranoproliferative immunology, Glomerulonephritis, Membranoproliferative drug therapy, Glomerulonephritis, Membranoproliferative pathology, Glomerulonephritis, Membranoproliferative diagnosis, Glomerulonephritis, Membranoproliferative blood, Complement C3 analysis
- Abstract
Background: Membranoproliferative glomerulonephritis (MPGN) can be divided into immune-complex MPGN (IC-MPGN) and C3 glomerulopathy (C3G), which includes dense deposit disease (DDD) and C3 glomerulonephritis (C3GN). These conditions result from abnormalities in different complement pathways and may lead to different prognoses. However, there are limited studies describing the respective clinical courses., Methods: In this study, Japanese pediatric patients diagnosed with MPGN based on kidney biopsies conducted between February 2002 and December 2022 were reclassified as having IC-MPGN or C3G (DDD or C3GN). We retrospectively analyzed the clinical characteristics and outcomes of these patients., Results: Out of 25 patients with MPGN, three (12.0%) were diagnosed with DDD, 20 (80.0%) with C3GN, and two (8.0%) with IC-MPGN. There were 13 (65.0%) patients and one (33.3%) patient in remission after treatment for C3GN and DDD, respectively, and no patients with IC-MPGN achieved remission. The median follow-up period was 5.3 (2.5-8.9) years, and none of the patients in either group progressed to an estimated glomerular filtration rate < 15 ml/min/1.73 m
2 . Patients with C3GN presenting mild to moderate proteinuria (n = 8) received a renin-angiotensin system inhibitor (RAS-I) alone, and these patients exhibited a significant decrease in the urinary protein creatinine ratio and a notable increase in serum C3 levels at the last follow-up., Conclusions: Most patients with MPGN were diagnosed with C3GN. The remission rate for C3GN was high, and no patients developed kidney failure during the approximately 5-year follow-up. Additionally, patients with C3GN with mild to moderate proteinuria had good outcomes with RAS-I alone, but continued vigilance is necessary to determine long-term prognosis., (© 2024. The Author(s).)- Published
- 2024
- Full Text
- View/download PDF
33. Tumor diameter and enhancing capsule, as well as previous interventional treatments, as potential predictors of vascular lake phenomenon in hepatocellular carcinoma patients treated with drug-eluting beads transarterial chemoembolization.
- Author
-
Hatakeyama K, Tozawa T, Wada Y, Konno M, Matsuda M, Otani T, Minami S, Sato W, Nomura K, Iijima K, and Mori N
- Abstract
Objectives: The initial drug-eluting bead (DEB)-transarterial chemoembolization (TACE) are often performed after multiple sessions of transarterial infusion chemotherapy (TAI) or conventional TACE. The purpose of our study was to evaluate the factors associated with the occurrence of vascular lake phenomenon (VLP) during DEB-TACE, considering the previous interventional treatments., Material and Methods: Forty-nine initial DEB-TACE procedures in 49 patients between November 2010 and April 2024 were included in this retrospective study. VLP was defined as a localized pooling of contrast agents within the tumor in the venous phase of digital subtraction angiography. The laboratory data, pre-treatment imaging findings such as the maximum tumor diameter (≥3 cm or <3 cm) and the presence of enhancing capsule obtained from computed tomography or magnetic resonance imaging, size of DEBs, and loading drugs, the total number of previous interventional treatments were recorded and compared between VLP occurrence and VLP non-occurrence groups. The multivariate logistic regression analysis was performed to explore the association of factors in predicting VLP occurrence., Results: VLP was observed in 16 patients (32.65%) out of 49 patients. The maximum tumor diameter (≥3 cm) and the presence of the enhancing capsule were significantly higher, and the total number of previous interventional treatments was significantly smaller in the VLP occurrence group than in the VLP non-occurrence group ( P = 0.0006, 0.0007, and 0.0003). In multivariate analysis, the maximum tumor diameter, the presence of the enhancing capsule, and the total number of previous interventional treatments were significantly associated with the occurrence of VLP ( P = 0.0048, 0.0093, and 0.047)., Conclusion: Our study confirmed that the reported risk factor, the maximum tumor diameter, and the enhancing capsule were significantly related to the occurrence of VLP in DEB-TACE. Further, the occurrence of VLP might be carefully considered when the number of previous interventional treatments is small., Competing Interests: There are no conflicts of interest., (© 2024 Published by Scientific Scholar on behalf of Journal of Clinical Imaging Science.)
- Published
- 2024
- Full Text
- View/download PDF
34. Treatment odyssey to epilepsy surgery in children with focal cortical dysplasia: Risk factors for delayed surgical intervention.
- Author
-
Takahashi YK, Baba S, Kawashima T, Tachimori H, Iijima K, Kimura Y, Saito T, Nakagawa E, Komaki H, and Iwasaki M
- Subjects
- Child, Child, Preschool, Female, Humans, Infant, Male, Neurosurgical Procedures, Retrospective Studies, Risk Factors, Drug Resistant Epilepsy etiology, Drug Resistant Epilepsy surgery, Focal Cortical Dysplasia complications, Focal Cortical Dysplasia diagnostic imaging, Focal Cortical Dysplasia surgery, Magnetic Resonance Imaging, Time-to-Treatment statistics & numerical data
- Abstract
Objective: To elucidate the patient's journey to epilepsy surgery and identify the risk factors contributing to surgical delay in pediatric patients with drug-resistant epilepsy (DRE) due to focal cortical dysplasia (FCD)., Methods: A retrospective review was conducted of 93 pediatric patients who underwent curative epilepsy surgery for FCD between January 2012 and March 2023 at a tertiary epilepsy center. The Odyssey plot demonstrated the treatment process before epilepsy surgery, including key milestones of epilepsy onset, first hospital visit, epilepsy diagnosis, MRI diagnosis, DRE diagnosis, and surgery. The primary outcome was surgical delay; the duration from DRE to surgery. Multivariate linear regression models were used to examine the association between surgical delay and clinical, investigative, and treatment characteristics., Results: The median age at seizure onset was 1.3 years (interquartile range [IQR] 0.14-3.1), and at the time of surgery, it was 6 years (range 1-11). Notably, 46% experienced surgical delays exceeding two years. The Odyssey plot visually highlighted that surgical delay comprised a significant portion of the patient journey. Although most patients underwent MRI before referral, MRI abnormalities were identified before referral only in 39% of the prolonged group, compared to 70% of the non-prolonged group. Multivariate analyses showed that delayed notification of MRI abnormalities, longer duration from epilepsy onset to DRE, older age at onset, number of antiseizure medications tried, and moderate to severe intellectual disability were significantly associated with prolonged surgical delay., Conclusion: Pediatric DRE patients with FCD experienced a long journey until surgery. Early and accurate identification of MRI abnormalities is important to minimize surgical delays., Competing Interests: Declaration of competing interest None of the authors has any conflict of interest to disclose., (Copyright © 2024 British Epilepsy Association. Published by Elsevier Ltd. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
35. Risk stratification of synchronous gastric cancers including alcohol-related genetic polymorphisms.
- Author
-
Asonuma S, Hatta W, Koike T, Okata H, Uno K, Iwai W, Saito M, Yonechi M, Fukushi D, Kayaba S, Kikuchi R, Ito H, Fushiya J, Maejima R, Abe Y, Kawamura M, Honda J, Kondo Y, Dairaku N, Toda S, Watanabe K, Takahashi K, Echigo H, Abe Y, Endo H, Okata T, Hoshi T, Kinoshita K, Kisoi M, Nakamura T, Nakaya N, Iijima K, and Masamune A
- Subjects
- Humans, Male, Female, Aged, Middle Aged, Risk Factors, Prospective Studies, Risk Assessment, Neoplasms, Multiple Primary genetics, Neoplasms, Multiple Primary pathology, Cohort Studies, Smoking adverse effects, Japan epidemiology, Risk, Genotype, Stomach Neoplasms genetics, Stomach Neoplasms pathology, Alcohol Dehydrogenase genetics, Aldehyde Dehydrogenase, Mitochondrial genetics, Alcohol Drinking adverse effects, Polymorphism, Genetic
- Abstract
Background and Aim: We previously identified that ever-smoking and severe gastric atrophy in pepsinogen are risk factors for synchronous gastric cancers (SGCs). This study aimed to determine the association of alcohol drinking status or alcohol-related genetic polymorphism with SGCs and also stratify their risk., Methods: This multi-center prospective cohort study included patients who underwent endoscopic submucosal dissection for the initial early gastric cancers at 22 institutions in Japan. We evaluated the association of alcohol drinking status or alcohol dehydrogenase 1B (ADH1B) and acetaldehyde dehydrogenase 2 (ALDH2) genotypes with SGCs. We then stratified the risk of SGCs by combining prespecified two factors and risk factors identified in this study., Results: Among 802 patients, 130 had SGCs. Both the ADH1B Arg and ALDH2 Lys alleles demonstrated a significant association with SGCs on multivariate analysis (odds ratio, 1.77), although alcohol drinking status showed no association. The rates of SGCs in 0-3 risk factors in the combined evaluation of three risk factors (ever-smoking, severe gastric atrophy in pepsinogen, and both the ADH1B Arg and ALDH2 Lys alleles) were 7.6%, 15.0%, 22.0%, and 32.1%, respectively. The risk significantly increased from 0 to 3 risk factors on multivariate analysis (P for trend <0.001)., Conclusions: Both the ADH1B Arg and ALDH2 Lys alleles were at high risk for SGCs. The risk stratification by these three factors may be a less invasive and promising tool for predicting their risk., (© 2024 Journal of Gastroenterology and Hepatology Foundation and John Wiley & Sons Australia, Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
36. Etiologic factors for Barrett's esophagus: toward countermeasures in Asia.
- Author
-
Iijima K
- Subjects
- Humans, Risk Factors, Asia epidemiology, Incidence, Asian People, Precancerous Conditions epidemiology, Barrett Esophagus epidemiology, Barrett Esophagus etiology, Esophageal Neoplasms epidemiology, Esophageal Neoplasms etiology, Esophageal Neoplasms prevention & control, Adenocarcinoma epidemiology, Adenocarcinoma etiology, Adenocarcinoma prevention & control
- Abstract
Introduction: Over the past several decades, Europe and the United States have experienced a rapid increase in esophageal adenocarcinoma. Research and countermeasures against Barrett's esophagus, its precancerous lesion, are progressing. Because esophageal adenocarcinoma has an extremely poor prognosis when diagnosed in an advanced stage, recommendations for early cancer detection have been made based on the various proven etiological factors of Barrett's esophagus and the actual cancer risk of Barrett's esophagus. In recent years, there have been indications of an increase in esophageal adenocarcinoma in Japan, and a similar trend of cancer will occur shortly in other Asian countries. Consequently, Asian countries must implement similar countermeasures against Barrett's esophagus and esophageal adenocarcinoma, referencing the knowledge gained thus far in Europe and the United States., Areas Covered: This review summarizes the latest findings on the etiologic factors of Barrett's esophagus and discusses the differences between Westerners and Asians. The current status of Barrett's esophagus in Japan and other Asian countries is also summarized., Expert Opinion: The etiological factors and cancer incidence of Barrett's esophagus in Asia diverge somewhat from those observed in Europe and America. Therefore, it is imperative to implement measures that are tailored to the actual circumstances of Asian people.
- Published
- 2024
- Full Text
- View/download PDF
37. Interruption during drug-eluting beads transarterial chemoembolization procedure by presumed allergic shock requires careful follow-up on the development of vascular lake phenomenon.
- Author
-
Ogawa A, Wada Y, Iijima K, and Mori N
- Abstract
We present a case involving a 60-year-old male with multifocal hepatocellular carcinoma (HCC), emphasizing the critical need for vigilant post-procedural monitoring following the interruption of drug-eluting beads transarterial chemoembolization (DEB-TACE) due to an allergic reaction. The patient, who had a history of various treatments for HCC, underwent DEB-TACE. During the procedure, he experienced an anaphylactic shock, presumably due to an allergy to the treatment components (iodinated contrast agent), resulting in the procedure's discontinuation. Initially stable, the patient was later found to have intra-abdominal bleeding, a complication associated with the vascular lake phenomenon (VLP), detected on post-procedural imaging. Re-embolization using gelatin particles was performed to address the VLP. It remains unclear whether the shock experienced during the DEB-TACE procedure was due to the allergic reaction or the rupture of the VLP. This case underscores the complexities in managing DEB-TACE, the necessity of careful monitoring for VLP, and the challenges in diagnosing and managing allergic reactions during such procedures. In conclusion, it is crucial to consider that VLP can occur at any time during or after DEB-TACE. Assessing the presence of VLP using digital subtraction angiography before the termination of the procedure is essential. However, when an allergy to the iodinated contrast agent is suspected, as in this case, careful follow-up with abdominal ultrasound and computed tomography might be necessary to assess the presence of intra-abdominal hemorrhage associated with VLP., Competing Interests: There are no conflicts of interest., (© 2024 Published by Scientific Scholar on behalf of Journal of Clinical Imaging Science.)
- Published
- 2024
- Full Text
- View/download PDF
38. Grade 3 Pancreatic Neuroendocrine Tumor Refractory to Chemotherapy Successfully Treated with Peptide Receptor Radionuclide Therapy Leading to Conversion Surgery.
- Author
-
Sakaki K, Chiba M, Iijima K, Goto T, Arita J, and Tsuda H
- Abstract
A 59-year-old woman was diagnosed with a pancreatic neuroendocrine tumor (P-NET; Grade 3, Ki67: 25%) with multiple liver and lymph node metastases and started chemotherapy with streptozosin (500 mg/m
2 /day) in combination with lanreotide acetate (120 mg). After six courses of (daily) streptozosin, the patient had progressive disease, as assessed by computed tomography (CT), and peptide receptor radionuclide therapy (PRRT) was started as second-line treatment. As PRRT was remarkably successful and the tumor shrank, surgery was performed to resect the primary pancreatic tumor, liver metastases, and lymph node metastases. CT evaluation performed six months after the surgery showed a complete response.- Published
- 2024
- Full Text
- View/download PDF
39. A Final Report on the Real Impact of the COVID-19 Pandemic on the Diagnosis of Gastrointestinal Cancer in Akita Prefecture, Japan in 2022.
- Author
-
Iijima K, Watanabe K, Shimodaira Y, Koizumi S, Fukuda S, Yoshida T, Ookubo R, Matsuhashi T, Jin M, Miura M, and Shibata H
- Subjects
- Humans, Japan epidemiology, Registries, Pandemics, SARS-CoV-2, Male, Female, Neoplasm Staging, Colorectal Neoplasms epidemiology, Colorectal Neoplasms diagnosis, COVID-19 epidemiology, Gastrointestinal Neoplasms epidemiology, Gastrointestinal Neoplasms diagnosis
- Abstract
The long-term impact of the coronavirus disease 2019 (COVID-19) pandemic on the disruption of gastrointestinal cancer diagnoses remains unclear. This study investigated the actual impact on esophagogastric cancer (EGC) and colorectal cancer (CRC) diagnoses up to the third year of the pandemic in Akita Prefecture, Japan, using population-based registry data. We collected data on the annual number of EGC and CRC diagnoses using a database from the collaborative Akita Prefecture hospital-based registration. The net number of cancers diagnosed in the first three years of the pandemic (2020-2022) were compared with those diagnosed in the three years before the pandemic (2017-2019). Changes in the proportion of cancer stage and initial treatment for diagnosed EGC and CRC after the pandemic were then compared. The total number of EGCs was 9.3% lower in the first three years of the pandemic than in the three years before, probably due to its long-term declining trend. The total number of CRCs in the first three years of the pandemic exceeded that in the three years before, suggesting successful recovery of the diagnostic procedure. The proportion of cancer stages and initial treatment for EGCs and CRCs remained largely unchanged after the onset of the pandemic. Based on the population-based registry data from the first three years of the pandemic, the disruption of gastrointestinal cancer diagnoses caused by the pandemic is settling down without any substantial disease progression, even in Akita Prefecture, the area with the highest incidence of cancer in all of Japan.
- Published
- 2024
- Full Text
- View/download PDF
40. Effectiveness of an interdisciplinary home care approach for older adults with chronic conditions: A systematic review and meta-analysis.
- Author
-
Kamei T, Kawada A, Minami K, Takahashi Z, Ishigaki Y, Yamanaka T, Yamamoto N, Yamamoto Y, Suzuki Y, Watanabe T, and Iijima K
- Abstract
The effectiveness of interdisciplinary home healthcare service consisting of at least two or more healthcare providers, such as a nurse, physician and physiotherapist, for community-dwelling older adults remains unclear. This systematic review assesses the effects of interdisciplinary home care on quality of life (QOL) and health outcomes in older adults with chronic conditions using validated tools. Databases were searched using CINAHL Plus with Full Text, PubMed, EMBASE, CENTRAL, PsycINFO, and OpenGrey from inception to January 25, 2021. Eligibility criteria included (i) an interdisciplinary home care approach, (ii) participants aged 65 years and older with chronic conditions, (iii) randomized controlled trials (RCTs), and (iv) original literature in English. The study reviewer's dyad independently screened the literature and assessed the study quality using the Cochrane's Risk of Bias 2 tool. The analysis employed qualitative and quantitative integration and Grading of Recommendations Assessment, Development, and Evaluation. This study included 13 RCTs with 4709 participants. Four RCTs indicated that interdisciplinary home healthcare services reduced hospital admissions during the initial 6 months after the start of home care interventions (risk ratio [RR] = 0.73; 95% confidence interval [CI] = 0.61-0.88; p < 0.001; I
2 = 0%). However, evidence certainty was moderate; QOL and mortality showed low certainty; and institutionalization and adherence showed moderate certainty of evidence. This study suggests that the interdisciplinary home care approach reduces hospital admissions but lacks effects on other outcomes. More robust studies are required to evaluate this evidence. Geriatr Gerontol Int 2024; ••: ••-••., (© 2024 The Author(s). Geriatrics & Gerontology International published by John Wiley & Sons Australia, Ltd on behalf of Japan Geriatrics Society.)- Published
- 2024
- Full Text
- View/download PDF
41. Genotype-relevant neuroimaging features in low-grade epilepsy-associated tumors.
- Author
-
Iijima K, Fujii H, Suzuki F, Murayama K, Goto YI, Saito Y, Sano T, Suzuki H, Miyata H, Kimura Y, Nakashima T, Suzuki H, Iwasaki M, and Sato N
- Abstract
Introduction: Low-grade epilepsy-associated tumors are the second most common histopathological diagnoses in cases of drug-resistant focal epilepsy. However, the connection between neuroimaging features and genetic alterations in these tumors is unclear, prompting an investigation into genotype-relevant neuroimaging characteristics., Methods: This study retrospectively analyzed neuroimaging and surgical specimens from 46 epilepsy patients with low-grade epilepsy-associated neuroepithelial tumors that had genetic mutations identified through panel sequencing to investigate their relationship to genotypes., Results: Three distinct neuroimaging groups were established: Group 1 had indistinct borders and iso T1-weighted and slightly high or high T2-weighted signal intensities without a diffuse mass effect, associated with 93.8% sensitivity and 100% specificity to BRAF V600E mutations; Group 2 exhibited sharp borders and very or slightly low T1-weighted and very high T2-weighted signal intensities with a diffuse mass effect and 100% sensitivity and specificity for FGFR1 mutations; and Group 3 displayed various characteristics. Histopathological diagnoses including diffuse low-grade glioma and ganglioglioma showed no clear association with genotypes. Notably, postoperative seizure-free rates were higher in Group 1 tumors ( BRAF V600E) than in Group 2 tumors ( FGFR1 )., Discussion: These findings suggest that tumor genotype may be predicted by neuroimaging before surgery, providing insights for personalized treatment approaches., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Iijima, Fujii, Suzuki, Murayama, Goto, Saito, Sano, Suzuki, Miyata, Kimura, Nakashima, Suzuki, Iwasaki and Sato.)
- Published
- 2024
- Full Text
- View/download PDF
42. Differences in coagulation responses to vascular injury between uninterrupted dabigatran and apixaban: A clinical prospective randomized study.
- Author
-
Ikami Y, Izumi D, Fujiki S, Sugiura H, Otsuki S, Suzuki N, Sakaguchi Y, Hakamata T, Hasegawa Y, Yagihara N, Iijima K, Tanaka T, Ishizawa M, Chinushi M, Minamino T, and Inomata T
- Abstract
Background: The coagulation response during vascular injury with uninterrupted administration of direct oral anticoagulants has not been elucidated., Objective: Our aim was to evaluate differences in coagulation responses after vascular injury between uninterrupted direct thrombin inhibitor and direct factor Xa inhibitor recipients., Methods: Patients scheduled for catheter ablation for atrial fibrillation were randomly assigned to receive dabigatran or apixaban in this prospective, randomized, comparative, parallel-group study. Venous blood was collected 3 times: 180 minutes after taking the anticoagulant on the day before the procedure, before vascular punctures of the ablation procedure, and 10-15 minutes after the start of vascular punctures., Results: Forty-two patients were enrolled. The prothrombin fragment 1+2 level, the primary end point, was much larger after vascular puncture in the uninterrupted dabigatran recipients (median, 83 pmol/L; interquartile range, 56-133 pmol/L) than in the uninterrupted apixaban recipients (median, 1 pmol/L; interquartile range, -3 to 19 pmol/L; P < .001). Antithrombin levels decreased after vascular puncture in dabigatran recipients, and both protein C and antithrombin levels decreased after vascular puncture in apixaban recipients., Conclusion: Unlike uninterrupted apixaban, uninterrupted dabigatran does not inhibit thrombin generation in response to vascular injury., Competing Interests: Disclosures The authors have no conflicts of interest to disclose., (Copyright © 2024 Heart Rhythm Society. Published by Elsevier Inc. All rights reserved.)
- Published
- 2024
- Full Text
- View/download PDF
43. Erroneous predictive coding across brain hierarchies in a non-human primate model of autism spectrum disorder.
- Author
-
Chao ZC, Komatsu M, Matsumoto M, Iijima K, Nakagaki K, and Ichinohe N
- Subjects
- Animals, Male, Valproic Acid pharmacology, Electrocorticography, Autism Spectrum Disorder physiopathology, Autism Spectrum Disorder chemically induced, Disease Models, Animal, Callithrix, Brain physiopathology, Brain drug effects
- Abstract
In autism spectrum disorder (ASD), atypical sensory experiences are often associated with irregularities in predictive coding, which proposes that the brain creates hierarchical sensory models via a bidirectional process of predictions and prediction errors. However, it remains unclear how these irregularities manifest across different functional hierarchies in the brain. To address this, we study a marmoset model of ASD induced by valproic acid (VPA) treatment. We record high-density electrocorticography (ECoG) during an auditory task with two layers of temporal control, and applied a quantitative model to quantify the integrity of predictive coding across two distinct hierarchies. Our results demonstrate a persistent pattern of sensory hypersensitivity and unstable predictions across two brain hierarchies in VPA-treated animals, and reveal the associated spatio-spectro-temporal neural signatures. Despite the regular occurrence of imprecise predictions in VPA-treated animals, we observe diverse configurations of underestimation or overestimation of sensory regularities within the hierarchies. Our results demonstrate the coexistence of the two primary Bayesian accounts of ASD: overly-precise sensory observations and weak prior beliefs, and offer a potential multi-layered biomarker for ASD, which could enhance our understanding of its diverse symptoms., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
44. Correction: New chloptosins B and C from an Embleya strain exhibit synergistic activity against methicillin-resistant Staphylococcus aureus when combined with co-producing compound L-156,602.
- Author
-
Hashizume H, Harada S, Sawa R, Iijima K, Kubota Y, Shibuya Y, Nagasaka R, Hatano M, and Igarashi M
- Published
- 2024
- Full Text
- View/download PDF
45. Association between the hypokalaemia index based on area over the serum potassium concentration curve and occurrence of acute kidney injury in patients administered liposomal amphotericin B.
- Author
-
Ueda T, Nakajima K, Ichiki K, Ishikawa K, Yamada K, Tsuchida T, Otani N, Takubo S, Iijima K, Uchino M, Horio Y, Kuwahara R, Kimura T, Murakami Y, Nozaki Y, Nakama S, Miyazaki Y, and Takesue Y
- Subjects
- Humans, Male, Female, Middle Aged, Aged, Adult, Retrospective Studies, Risk Factors, Incidence, Aged, 80 and over, Hypokalemia chemically induced, Hypokalemia blood, Amphotericin B adverse effects, Amphotericin B administration & dosage, Acute Kidney Injury chemically induced, Acute Kidney Injury blood, Potassium blood, Antifungal Agents adverse effects, Antifungal Agents administration & dosage
- Abstract
Background: Acute kidney injury (AKI) and hypokalaemia are common adverse events after treatment with liposomal amphotericin B (L-AMB)., Objectives: Because excess potassium (K) leakage occurs during renal tubular injury caused by L-AMB, measuring the decrease in rate of serum K concentration might be more useful to assess the renal impact of L-AMB than hypokalaemia identified from a one-point measurement. The effects of a decrease in K concentration and duration of hypokalaemia on AKI were investigated., Methods: A ≥ 10% decrease in K concentration from the reference concentration within a 7-day timeframe was evaluated. The hypokalaemia index, which combines the duration of K concentration lower than the reference and a marked low K concentration, was calculated from the area over the concentration curve., Results: Eighty-six patients were included in the study. The incidences of AKI and decrease in K concentration were 36.0% and 63.9%, respectively. Of patients who developed both adverse events, a decrease in K concentration occurred first in 22 of 26 patients, followed by AKI 7 days later. Hypokalaemia did not increase AKI risk whereas a decrease in K concentration was an independent risk factor for AKI. The hypokalaemia index in patients with AKI was significantly higher than those without AKI (5.35 vs. 2.50 points, p = 0.002), and ≥3.45 points was a significant predictor for AKI., Conclusion: A ≥ 10% decrease in the K concentration was a significant factor for AKI in patients receiving L-AMB therapy. In such patients, dose reduction or alternative antifungals could be considered based on the hypokalaemia index., (© 2024 The Author(s). Mycoses published by Wiley‐VCH GmbH.)
- Published
- 2024
- Full Text
- View/download PDF
46. Evaluation of the immunotoxicity potential of nanomaterials using THP-1 cells.
- Author
-
Nishida A, Sawada Y, Arai R, Ishibashi N, Suzuo M, Ohno A, Ashikaga T, and Iijima K
- Abstract
With the expansion of nanomaterials (NMs) usage, concerns about their toxicity are increasing, and the wide variety of NMs makes it difficult to assess their toxicity. Therefore, the development of a high-throughput, accurate, and certified method to evaluate the immunotoxicity of NMs is required. In this study, we assessed the immunotoxicity potential of various NMs, such as nanoparticles of silver, silica, and titanium dioxide, using the human Cell Line Activation Test (h-CLAT) at the cellular level. After exposure to silver nanoparticle dispersions, the expression levels of CD86 and CD54 increased, suggesting the activation of antigen-presenting cells (APCs) by silver nanoparticles. Quantification of silver ions eluted from silver nanoparticles and the activation of APCs by silver ions suggested that it was due to the release of silver ions. Silica nanoparticles also increased the expression of CD86 and/or CD54, and their activation ability correlated with the synthesis methods and hydrodynamic diameters. The ability of titanium dioxide to activate APCs differed depending on the crystal type and hydrodynamic diameter. These results suggest a potential method to evaluate the immunotoxicity potential of various NMs based on their ability to activate APCs using human monocytic THP-1 cells. This method will be valuable in assessing the immunotoxicity potential and elucidating the immunotoxic mechanisms of NMs., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Nishida, Sawada, Arai, Ishibashi, Suzuo, Ohno, Ashikaga and Iijima.)
- Published
- 2024
- Full Text
- View/download PDF
47. Effect of empagliflozin on ventricular arrhythmias in patients with type 2 diabetes treated with an implantable cardioverter-defibrillator: the EMPA-ICD trial.
- Author
-
Fujiki S, Iijima K, Nakagawa Y, Takahashi K, Okabe M, Kusano K, Owada S, Kondo Y, Tsujita K, Shimizu W, Tomita H, Watanabe M, Shoda M, Watanabe M, Tokano T, Murohara T, Kaneshiro T, Kato T, Hayashi H, Maemura K, Niwano S, Umemoto T, Yoshida H, Ota K, Tanaka T, Kitamura N, Node K, and Minamino T
- Subjects
- Humans, Male, Female, Aged, Middle Aged, Treatment Outcome, Time Factors, Double-Blind Method, Japan, Cardiac Resynchronization Therapy adverse effects, Blood Glucose metabolism, Blood Glucose drug effects, Diabetes Mellitus, Type 2 diagnosis, Diabetes Mellitus, Type 2 complications, Diabetes Mellitus, Type 2 blood, Diabetes Mellitus, Type 2 drug therapy, Glucosides therapeutic use, Glucosides adverse effects, Benzhydryl Compounds therapeutic use, Benzhydryl Compounds adverse effects, Sodium-Glucose Transporter 2 Inhibitors therapeutic use, Sodium-Glucose Transporter 2 Inhibitors adverse effects, Defibrillators, Implantable, Electric Countershock instrumentation, Electric Countershock adverse effects
- Abstract
Background: Sodium-glucose cotransporter 2 (SGLT2) inhibitors reduce the risk of hospitalization for heart failure and cardiovascular death with type 2 diabetes; however, their effect on arrhythmias is unclear. The purpose of this study was to investigate the effects of empagliflozin on ventricular arrhythmias in patients with type 2 diabetes., Methods: A total of 150 patients with type 2 diabetes who were treated with an implantable cardioverter-defibrillator or cardiac resynchronization therapy defibrillator (ICD/CRT-D) were randomized to once-daily empagliflozin or placebo for 24 weeks. The primary endpoint was the change in the number of ventricular arrhythmias from the 24 weeks before to the 24 weeks during treatment. Secondary endpoints included the change in the number of appropriate device discharges and other values., Results: In the empagliflozin group, the number of ventricular arrhythmias recorded by ICD/CRT-D decreased by 1.69 during treatment compared to before treatment, while in the placebo group, the number increased by 1.79. The coefficient for the between-group difference was - 1.07 (95% confidence interval [CI] - 1.29 to - 0.86; P < 0.001). The change in the number of appropriate device discharges during and before treatment was 0.06 in the empagliflozin group and 0.27 in the placebo group, with no significant difference between the groups (P = 0.204). Empagliflozin was associated with an increase in blood ketones and hematocrit and a decrease in blood brain natriuretic peptide and body weight., Conclusions: In patients with type 2 diabetes treated with ICD/CRT-D, empagliflozin reduces the number of ventricular arrhythmias compared with placebo. Trial registration jRCTs031180120., (© 2024. The Author(s).)
- Published
- 2024
- Full Text
- View/download PDF
48. Dose Contribution to the Regional Lymph-Node Metastases and Point B from Intracavity and Interstitial Hybrid Brachytherapy in Locally Advanced Cervical Cancer.
- Author
-
Muramoto Y, Murakami N, Okonogi N, Takatsu J, Iijima K, Inoue T, Kato K, Karino T, Kojima K, Oshima M, Kosugi Y, Kawamoto T, Hirayama T, Fujino K, Terao Y, and Shikama N
- Abstract
Purpose: Analyzing dose distributions to regional lymph-node metastases (RLNMs) in locally advanced cervical cancer (LACC) patients undergoing intracavitary and interstitial hybrid brachytherapy (IC/IS)., Methods: Dose distributions of eleven LACC patients with 38 RLNMs, and who received 38 IC/IS sessions were analyzed in EQD
2 , considering RLNM positions and ipsilateral interstitial needles; these RLNMs, excepting the para-aortic region, were classified into four groups., Results: RLNMs had a median of two ipsilateral interstitial needles per session. Significant differences were observed in total RLNM D90 , depending on whether the position was cranial or caudal of the uterine base (85.5 vs. 378.9 cGy, p < 0.0001), and whether the RLNM D90 was associated with a number of ipsilateral interstitial needles between 0-1 or 2 or more (68.4 vs. 112.2 cGy, p = 0.006) per session. At each session, Group 1 RLNMs (cranial of the uterine base, 0-1 ipsilateral interstitial needle) had a mean D90 of 21.1 cGy; Group 2 (cranial, 2 or more), 73.8; Group 3 (caudal, 0-1), 94.7; and Group 4 (caudal, 2 or more), 136.1., Conclusion: RLNMs located caudal of the uterine base associated with two or more ipsilateral interstitial needles in IC/IS had a higher dose contribution, which should be considered when calculating the RLNMs' dose of external beam boost irradiation.- Published
- 2024
- Full Text
- View/download PDF
49. Association of oral frailty with medical expenditure in older Japanese adults: The study of late-stage older adults in Tottori (START Tottori).
- Author
-
Arai E, Watanabe Y, Nakagawa S, Ohara Y, Iwasaki M, Hirano H, Ikebe K, Ono T, Iijima K, Adachi A, Watanabe T, and Yamazaki Y
- Abstract
Objects: This study aimed to determine the association between annual medical expenses and oral frailty in later-stage older adults (aged ≥ 75 years). No studies have investigated the association between medical costs and oral frailty, which would elucidate the association between oral frailty and the deterioration of mental and overall physical function., Materials and Methods: In this cross-sectional study, 2190 adults (860 men and 1330 women aged 75-94 years) covered by the Medical System for the Elderly and residing in Tottori Prefecture, Japan, between April 2016 and March 2019, were included. Participants were classified into three groups: healthy, pre-orally frail or orally frail, based on dental health screening findings. The medical and dental expenses over the years, number of days of consultations and comorbidities were obtained from the Japanese Health Insurance Claims Database., Results: The number of days of medical and dental consultations and annual medical expenses for outpatient care differed among the three study groups. A significant association was observed between oral frailty and high annual expenses for outpatient medical and dental care. Oral frailty was associated with higher medical expenses in participants with poor masticatory function. Higher and lower dental expenses were associated with subjective poor masticatory function and subjective impairment of swallowing function respectively., Conclusion: Medical and dental expenses for orally frail older adults are high, indicating that oral frailty may be related to the occurrence and severity of diseases other than oral health issues. Future studies should examine the mechanism by which oral weakness affects physical and mental functions., (© 2024 Gerodontology Association and John Wiley & Sons Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
50. Development of a rapid and reliable method to simultaneously detect seven food allergens in processed foods using LC-MS/MS.
- Author
-
Torii A, Seki Y, Sasano R, Ishida Y, Nakamura K, Ito R, Iwasaki Y, Iijima K, and Akiyama H
- Abstract
Rapid analysis of multiple food allergens is required to confirm the appropriateness of food allergen labelling in processed foods. This study aimed to develop a rapid and reliable method to simultaneously detect trace amounts of seven food allergenic proteins (wheat, buckwheat, milk, egg, crustacean, peanut, and walnut) in processed foods using LC-MS/MS. Suspension-trapping (S-Trap) columns and on-line automated solid-phase extraction were used to improve the complex and time-consuming pretreatment process previously required for allergen analysis using LC-MS/MS. The developed method enabled the simultaneous detection of selected marker peptides for specific proteins derived from seven food ingredients in five types of incurred samples amended with trace amounts of allergenic proteins. The limit of detection values of the method for each protein were estimated to be <1 mg/kg. The developed analytical approach is considered an effective screening method for confirming food allergen labelling on a wide range of processed foods., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2024 The Authors. Published by Elsevier Ltd.)
- Published
- 2024
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.