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3. Validation of the Japanese version of the Social Functioning in Dementia scale and COVID-19 pandemic's impact on social function in mild cognitive impairment and mild dementia.

Author

Umeda, Sumiyo, Kanemoto, Hideki, Suzuki, Maki, Wada, Tamiki, Suehiro, Takashi, Kakeda, Kyosuke, Nakatani, Yoshitaka, Satake, Yuto, Yamakawa, Maki, Koizumi, Fuyuki, Taomoto, Daiki, Hikida, Sakura, Hirakawa, Natsuho, Sommerlad, Andrew, Livingston, Gill, Hashimoto, Mamoru, Yoshiyama, Kenji, and Ikeda, Manabu

Abstract

Objectives: We aimed to psychometrically evaluate and validate a Japanese version of the Social Functioning in Dementia scale (SF-DEM-J) and investigate changes in social function in people with dementia during the coronavirus disease-19 (COVID-19) pandemic. Design: We interviewed people with mild cognitive impairment (MCI) and mild dementia and their caregivers during June 2020–March 2021 to validate patient- and caregiver-rated SF-DEM-J and compared their scores at baseline (April 2020 to May 2020) and at 6–8 months (January 2021 to March 2021) during a time of tighter COVID-19 restrictions. Setting: The neuropsychology clinic in the Department of Psychiatry at Osaka University Hospital and outpatient clinic in the Department of Psychiatry and Neurology at Daini Osaka Police Hospital, Japan. Participants: 103 dyads of patients and caregivers. Measurements: SF-DEM-J, Mini-Mental State Examination, Neuropsychiatric Inventory, UCLA Loneliness Scale, and Apathy Evaluation Scale. Results: The scale's interrater reliability was excellent and test–retest reliability was substantial. Content validity was confirmed for the caregiver-rated SF-DEM-J, and convergent validity was moderate. Caregiver-rated SF-DEM-J was associated with apathy, irritability, loneliness, and cognitive impairment. The total score of caregiver-rated SF-DEM-J and the score of Section 2, "communication with others," significantly improved at 6–8 months of follow-up. Conclusions: The SF-DEM-J is acceptable as a measure of social function in MCI and mild dementia. Our results show that the social functioning of people with dementia, especially communicating with others, improved during the COVID-19 pandemic, probably as a result of adaptation to the restrictive life. [ABSTRACT FROM AUTHOR]

Published
2024
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5. P186: Longitudinal changes in the cerebrospinal-fluid volumes in patients with Alzheimer’s disease.

Author

Suehiro, Takashi, primary, Kanemoto, Hideki, additional, Hashimoto, Mamoru, additional, Koizumi, Fuyuki, additional, Katakami, Shigeki, additional, Takeda, Kayo, additional, Taomoto, Daiki, additional, Satake, Yuto, additional, Sato, Shunsuke, additional, Wada, Tamiki, additional, Yoshiyama, Kenji, additional, Ishii, Kazunari, additional, and Ikeda, Manabu, additional

Published
2023
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7. P185: Comparison of social function in mild cognitive impairment and mild dementia using the Japanese version of the Social Functioning in Dementia scale (SF-DEM-J)

Author

Umeda, Sumiyo, primary, Kanemoto, Hideki, additional, Suzuki, Maki, additional, Wada, Tamiki, additional, Suehiro, Takashi, additional, Kakeda, Kyosuke, additional, Nakatani, Yoshitaka, additional, Satake, Yuto, additional, Yamakawa, Maki, additional, Koizumi, Fuyuki, additional, Taomoto, Daiki, additional, Hikida, Sakura, additional, Hirakawa, Natsuho, additional, Hashimoto, Mamoru, additional, Yoshiyama, Kenji, additional, and Ikeda, Manabu, additional

Published
2023
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11. Characteristics of very late-onset schizophrenia-like psychosis classified with the biomarkers for Alzheimer's disease: a retrospective cross-sectional study.

Author

Satake, Yuto, Kanemoto, Hideki, Taomoto, Daiki, Suehiro, Takashi, Koizumi, Fuyuki, Sato, Shunsuke, Wada, Tamiki, Matsunaga, Keiko, Shimosegawa, Eku, Gotoh, Shiho, Mori, Kohji, Morihara, Takashi, Yoshiyama, Kenji, and Ikeda, Manabu

Abstract

Objectives: We aimed to investigate the association between very late-onset schizophrenia-like psychosis (VLOSLP), a schizophrenia spectrum disorder with an onset of ≥60 years, and Alzheimer's disease (AD) using biomarkers. Design: Retrospective cross-sectional study. Setting: Neuropsychology clinic of Osaka University Hospital in Japan. Participants: Thirty-three participants were classified into three groups: eight AD biomarker-negative VLOSLP (VLOSLP−AD), nine AD biomarker-positive VLOSLP (VLOSLP+AD), and sixteen amnestic mild cognitive impairment due to AD without psychosis (aMCI−P+AD) participants. Measurements: Phosphorylated tau levels in the cerebrospinal fluid and 18F-Florbetapir positron emission tomography results were used as AD biomarkers. Several scales (e.g. the Mini-Mental State Examination (MMSE), Wechsler Memory Scale-Revised (WMS-R) Logical Memory (LM) I and II, and Neuropsychiatric Inventory (NPI)-plus) were conducted to assess clinical characteristics. Results: Those in both VLOSLP−AD and +AD groups scored higher than those in aMCI−P+AD in WMS-R LM I. On the other hand, VLOSLP+AD participants scored in between the other two groups in the WMS-R LM II, with only VLOSLP−AD participants scoring significantly higher than aMCI−P+AD participants. There were no significant differences in sex distribution and MMSE scores among the three groups or in the subtype of psychotic symptoms between VLOSLP−AD and +AD participants. Four VLOSLP−AD and five VLOSLP+AD participants harbored partition delusions. Delusion of theft was shown in two VLOSLP−AD patients and five VLOSLP+AD patients. Conclusion: Some VLOSLP patients had AD pathology. Clinical characteristics were different between AD biomarker-positive and AD biomarker-negative VLOSLP, which may be helpful for detecting AD pathology in VLOSLP patients. [ABSTRACT FROM AUTHOR]

Published
2024
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13. Characteristics of very late-onset schizophrenia-like psychosis classified with the biomarkers for Alzheimer’s disease: a retrospective cross-sectional study

Author

Satake, Yuto, primary, Kanemoto, Hideki, additional, Taomoto, Daiki, additional, Suehiro, Takashi, additional, Koizumi, Fuyuki, additional, Sato, Shunsuke, additional, Wada, Tamiki, additional, Matsunaga, Keiko, additional, Shimosegawa, Eku, additional, Gotoh, Shiho, additional, Mori, Kohji, additional, Morihara, Takashi, additional, Yoshiyama, Kenji, additional, and Ikeda, Manabu, additional

Published
2023
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14. Cerebrospinal fluid amyloid beta and response of cognition to a tap test in idiopathic normal pressure hydrocephalus: a case–control study.

Author

Kanemoto, Hideki, Mori, Etsuro, Tanaka, Toshihisa, Suehiro, Takashi, Yoshiyama, Kenji, Suzuki, Yukiko, Kakeda, Kyosuke, Wada, Tamiki, Hosomi, Koichi, Kishima, Haruhiko, Kazui, Hiroaki, Hashimoto, Mamoru, and Ikeda, Manabu

Abstract

Objectives: To examine the relationship between cerebrospinal fluid (CSF) biomarkers of Alzheimer's disease (AD) and tap test response to elucidate the effects of comorbidity of AD in idiopathic normal-pressure hydrocephalus (iNPH). Design: Case–control study. Setting: Osaka University Hospital. Participants: Patients with possible iNPH underwent a CSF tap test. Measurements: Concentrations of amyloid beta (Aβ) 1–40, 1–42, and total tau in CSF were measured. The response of tap test was judged using Timed Up and Go test (TUG), 10-m reciprocation walking test (10MWT), Mini-Mental State Examination (MMSE), and iNPH grading scale. The ratio of Aβ1–42 to Aβ1–40 (Aβ42/40 ratio) and total tau concentration was compared between tap test-negative (iNPH-nTT) and -positive (iNPH-pTT) patients. Results: We identified 27 patients as iNPH-nTT and 81 as iNPH-pTT. Aβ42/40 ratio was significantly lower (mean [SD] = 0.063 [0.026] vs. 0.083 [0.036], p = 0.008), and total tau in CSF was significantly higher (mean [SD] = 385.6 [237.2] vs. 293.6 [165.0], p = 0.028) in iNPH-nTT than in iNPH-pTT. Stepwise logistic regression analysis revealed that low Aβ42/40 ratio was significantly associated with the negativity of the tap test. The response of cognition was significantly related to Aβ42/40 ratio. The association between Aβ42/40 ratio and tap test response, especially in cognition, remained after adjusting for disease duration and severity at baseline. Conclusions: A low CSF Aβ42/40 ratio is associated with a poorer cognitive response, but not gait and urinary response, to a tap test in iNPH. Even if CSF biomarkers suggest AD comorbidity, treatment with iNPH may be effective for gait and urinary dysfunction. [ABSTRACT FROM AUTHOR]

Published
2023
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16. sj-docx-1-eeg-10.1177_15500594221088736 - Supplemental material for Normalized Power Variance: A new Field Orthogonal to Power in EEG Analysis

Author

Aoki, Yasunori, Kazui, Hiroaki, Pascual-Marqui, Roberto D., Bruña, Ricardo, Yoshiyama, Kenji, Wada, Tamiki, Kanemoto, Hideki, Suzuki, Yukiko, Suehiro, Takashi, Satake, Yuto, Yamakawa, Maki, Hata, Masahiro, Canuet, Leonides, Ishii, Ryouhei, Iwase, Masao, and Ikeda, Manabu

Subjects
FOS: Clinical medicine, 110904 Neurology and Neuromuscular Diseases, Neuroscience
Abstract

Supplemental material, sj-docx-1-eeg-10.1177_15500594221088736 for Normalized Power Variance: A new Field Orthogonal to Power in EEG Analysis by Yasunori Aoki, Hiroaki Kazui, Roberto D. Pascual-Marqui, Ricardo Bruña, Kenji Yoshiyama, Tamiki Wada, Hideki Kanemoto, Yukiko Suzuki, Takashi Suehiro, Yuto Satake, Maki Yamakawa, Masahiro Hata, Leonides Canuet, Ryouhei Ishii, Masao Iwase and Manabu Ikeda in Clinical EEG and Neuroscience

Published
2022
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17. Normalized Power Variance: A new Field Orthogonal to Power in EEG Analysis

Author

Aoki, Yasunori, primary, Kazui, Hiroaki, additional, Pascual-Marqui, Roberto D., additional, Bruña, Ricardo, additional, Yoshiyama, Kenji, additional, Wada, Tamiki, additional, Kanemoto, Hideki, additional, Suzuki, Yukiko, additional, Suehiro, Takashi, additional, Satake, Yuto, additional, Yamakawa, Maki, additional, Hata, Masahiro, additional, Canuet, Leonides, additional, Ishii, Ryouhei, additional, Iwase, Masao, additional, and Ikeda, Manabu, additional

Published
2022
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20. Cerebrospinal fluid amyloid beta and response of cognition to a tap test in idiopathic normal pressure hydrocephalus: a case–control study

Author

Kanemoto, Hideki, primary, Mori, Etsuro, additional, Tanaka, Toshihisa, additional, Suehiro, Takashi, additional, Yoshiyama, Kenji, additional, Suzuki, Yukiko, additional, Kakeda, Kyosuke, additional, Wada, Tamiki, additional, Hosomi, Koichi, additional, Kishima, Haruhiko, additional, Kazui, Hiroaki, additional, Hashimoto, Mamoru, additional, and Ikeda, Manabu, additional

Published
2021
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21. Normalized Power Variance: A New Field Orthogonal to Power in EEG Analysis

Author

Aoki, Yasunori, primary, Kazui, Hiroaki, additional, Pascual-Marqui, Roberto D., additional, Bruña, Ricardo, additional, Yoshiyama, Kenji, additional, Wada, Tamiki, additional, Kanemoto, Hideki, additional, Suzuki, Yukiko, additional, Suehiro, Takashi, additional, Satake, Yuto, additional, Yamakawa, Maki, additional, Hata, Masahiro, additional, Canuet, Leonides, additional, Ishii, Ryouhei, additional, Iwase, Masao, additional, and Ikeda, Manabu, additional

Published
2021
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22. Normalized Power Variance: A New Field Orthogonal to Power in EEG Analysis

Author

Aoki, Yasunori, Kazui, Hiroaki, Pascual-Marqui, Roberto D, Bruña, Ricardo, Yoshiyama, Kenji, Wada, Tamiki, Kanemoto, Hideki, Suzuki, Yukiko, Suehiro, Takashi, Satake, Yuto, Yamakawa, Maki, Hata, Masahiro, Canuet, Leonides, Ishii, Ryouhei, Iwase, Masao, Ikeda, Manabu, Aoki, Yasunori, Kazui, Hiroaki, Pascual-Marqui, Roberto D, Bruña, Ricardo, Yoshiyama, Kenji, Wada, Tamiki, Kanemoto, Hideki, Suzuki, Yukiko, Suehiro, Takashi, Satake, Yuto, Yamakawa, Maki, Hata, Masahiro, Canuet, Leonides, Ishii, Ryouhei, Iwase, Masao, and Ikeda, Manabu

Abstract

To date, electroencephalogram (EEG) has been used in the diagnosis of epilepsy, dementia, and disturbance of consciousness via the inspection of EEG waves. In addition, EEG power analysis combined with a source estimation method like exact-low-resolution-brain-electromagnetic-tomography (eLORETA), which calculates the power of cortical electrical activity from EEG data, has been widely used to investigate cortical electrical activity in both healthy individuals and neuropsychiatric patients. However, the recently developed field of mathematics “information geometry” indicates that EEG has another dimension orthogonal to power dimension — that of normalized power variance (NPV). By also introducing the idea of information geometry, a significantly faster convergent estimator of NPV was obtained. In this study, we applied this NPV analysis of eLORETA to idiopathic normal pressure hydrocephalus (iNPH) patients prior to a cerebrospinal fluid (CSF) shunt operation, where traditional power analysis could not detect any difference associated with CSF shunt operation outcome. NPV analysis detected significantly higher NPV values at the high convexity area in the beta frequency band between 17 shunt responders and 19 non-responders. Our findings demonstrated that EEG has another dimension — that of NPV, which contains a great deal of information about cortical electrical activity that can be useful in clinical practice.

Published
2021

25. Cover Image

Author

Kanemoto, Hideki, primary, Kazui, Hiroaki, additional, Adachi, Hiroyoshi, additional, Yoshiyama, Kenji, additional, Wada, Tamiki, additional, Nomura, Keiko T., additional, Shimosegawa, Eku, additional, and Ikeda, Manabu, additional

Published
2020
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27. Noninvasive prediction of shunt operation outcome in idiopathic normal pressure hydrocephalus

Author

Aoki, Yasunori, Hiroaki, Kazui, Toshihisa, Tanaka, Ishii, Ryouhei, Wada, Tamiki, Ikeda, Shunichiro, Hata, Masahiro, Canuet Delis, Leonides, Themistoklis, Katsimichas, Musha, Toshimitsu, Matsuzaki, Haruyasu, Imajo, Kaoru, Kanemoto, Hideki, Yoshida, Tetsuhiko, Nomura, Keiko, Yoshiyama, Kenji, Iwase, Masao, Takeda, M., Aoki, Yasunori, Hiroaki, Kazui, Toshihisa, Tanaka, Ishii, Ryouhei, Wada, Tamiki, Ikeda, Shunichiro, Hata, Masahiro, Canuet Delis, Leonides, Themistoklis, Katsimichas, Musha, Toshimitsu, Matsuzaki, Haruyasu, Imajo, Kaoru, Kanemoto, Hideki, Yoshida, Tetsuhiko, Nomura, Keiko, Yoshiyama, Kenji, Iwase, Masao, and Takeda, M.

Abstract

Idiopathic normal pressure hydrocephalus (iNPH) is a syndrome characterized by gait disturbance, cognitive deterioration and urinary incontinence in elderly individuals. These symptoms can be improved by shunt operation in some but not all patients. Therefore, discovering predictive factors for the surgical outcome is of great clinical importance. We used normalized power variance (NPV) of electroencephalography (EEG) waves, a sensitive measure of the instability of cortical electrical activity, and found significantly higher NPV in beta frequency band at the right fronto-temporo-occipital electrodes (Fp2, T4 and O2) in shunt responders compared to non-responders. By utilizing these differences, we were able to correctly identify responders and non-responders to shunt operation with a positive predictive value of 80% and a negative predictive value of 88%. Our findings indicate that NPV can be useful in noninvasively predicting the clinical outcome of shunt operation in patients with iNPH.

Published
2015

28. Noninvasive prediction of shunt operation outcome in idiopathic normal pressure hydrocephalus

Author

Aoki, Yasunori, primary, Kazui, Hiroaki, additional, Tanaka, Toshihisa, additional, Ishii, Ryouhei, additional, Wada, Tamiki, additional, Ikeda, Shunichiro, additional, Hata, Masahiro, additional, Canuet, Leonides, additional, Katsimichas, Themistoklis, additional, Musha, Toshimitsu, additional, Matsuzaki, Haruyasu, additional, Imajo, Kaoru, additional, Kanemoto, Hideki, additional, Yoshida, Tetsuhiko, additional, Nomura, Keiko, additional, Yoshiyama, Kenji, additional, Iwase, Masao, additional, and Takeda, Masatoshi, additional

Published
2015
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29. Predictors of prolonged hospital stay for the treatment of severe neuropsychiatric symptoms in patients with dementia: a cohort study in multiple hospitals

Author

Sugiyama, Hiromichi, primary, Kazui, Hiroaki, additional, Shigenobu, Kazue, additional, Masaki, Yoshihiro, additional, Hatta, Naoki, additional, Yamamoto, Daisuke, additional, Wada, Tamiki, additional, Nomura, Keiko, additional, Yoshiyama, Kenji, additional, Tabushi, Kaoru, additional, and Takeda, Masatoshi, additional

Published
2013
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30. Association between Milder Brain Deformation before a Shunt Operation and Improvement in Cognition and Gait in Idiopathic Normal Pressure Hydrocephalus

Author

Yamamoto, Daisuke, primary, Kazui, Hiroaki, additional, Wada, Tamiki, additional, Nomura, Keiko, additional, Sugiyama, Hiromichi, additional, Shimizu, Yoshiro, additional, Yoshiyama, Kenji, additional, Yoshida, Tetsuhiko, additional, Kishima, Haruhiko, additional, Yamashita, Fumio, additional, Yoshimine, Toshiki, additional, and Takeda, Masatoshi, additional

Published
2013
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31. Different Characteristics of Cognitive Impairment in Elderly Schizophrenia and Alzheimer’s Disease in the Mild Cognitive Impairment Stage

Author

Kazui, Hiroaki, primary, Yoshida, Tetsuhiko, additional, Takaya, Masahiko, additional, Sugiyama, Hiromichi, additional, Yamamoto, Daisuke, additional, Kito, Yumiko, additional, Wada, Tamiki, additional, Nomura, Keiko, additional, Yasuda, Yuka, additional, Yamamori, Hidenaga, additional, Ohi, Kazutaka, additional, Fukumoto, Motoyuki, additional, Iike, Naomi, additional, Iwase, Masao, additional, Morihara, Takashi, additional, Tagami, Shinji, additional, Shimosegawa, Eku, additional, Hatazawa, Jun, additional, Ikeda, Yoshiyuki, additional, Uchida, Eiichi, additional, Tanaka, Toshihisa, additional, Kudo, Takashi, additional, Hashimoto, Ryota, additional, and Takeda, Masatoshi, additional

Published
2011
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33. KIBRA Genetic Polymorphism Influences Episodic Memory in Alzheimer’s Disease, but Does Not Show Association with Disease in a Japanese Cohort

Author

Hayashi, Noriyuki, primary, Kazui, Hiroaki, additional, Kamino, Kouzin, additional, Tokunaga, Hiromasa, additional, Takaya, Masahiko, additional, Yokokoji, Mikiko, additional, Kimura, Ryo, additional, Kito, Yumiko, additional, Wada, Tamiki, additional, Nomura, Keiko, additional, Sugiyama, Hiromichi, additional, Yamamoto, Daisuke, additional, Yoshida, Tetsuhiko, additional, Currais, Antonio, additional, Soriano, Salvador, additional, Hamasaki, Toshimitsu, additional, Yamamoto, Mitsuko, additional, Yasuda, Yuka, additional, Hashimoto, Ryota, additional, Tanimukai, Hitoshi, additional, Tagami, Shinji, additional, Okochi, Masayasu, additional, Tanaka, Toshihisa, additional, Kudo, Takashi, additional, Morihara, Takashi, additional, and Takeda, Masatoshi, additional

Published
2010
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36. Noninvasive prediction of shunt operation outcome in idiopathic normal pressure hydrocephalus.

Author

Tanaka, Toshihisa, Ikeda, Shunichiro, Hata, Masahiro, Katsimichas, Themistoklis, Takeda, Masatoshi, Musha, Toshimitsu, Matsuzaki, Haruyasu, Aoki, Yasunori, Yoshida, Tetsuhiko, Yoshiyama, Kenji, Iwase, Masao, Canuet, Leonides, Kazui, Hiroaki, Ishii, Ryouhei, Wada, Tamiki, Kanemoto, Hideki, Nomura, Keiko, and Imajo, Kaoru

Subjects
FORECASTING, SURGICAL anastomosis, CEREBROSPINAL fluid shunts, HYDROCEPHALUS, ELECTROENCEPHALOGRAPHY
Abstract

Idiopathic normal pressure hydrocephalus (iNPH) is a syndrome characterized by gait disturbance, cognitive deterioration and urinary incontinence in elderly individuals. These symptoms can be improved by shunt operation in some but not all patients. Therefore, discovering predictive factors for the surgical outcome is of great clinical importance. We used normalized power variance (NPV) of electroencephalography (EEG) waves, a sensitive measure of the instability of cortical electrical activity, and found significantly higher NPV in beta frequency band at the right fronto-temporo-occipital electrodes (Fp2, T4 and O2) in shunt responders compared to non-responders. By utilizing these differences, we were able to correctly identify responders and non-responders to shunt operation with a positive predictive value of 80% and a negative predictive value of 88%. Our findings indicate that NPV can be useful in noninvasively predicting the clinical outcome of shunt operation in patients with iNPH. [ABSTRACT FROM AUTHOR]

Published
2015
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