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Mori M, Komatsu J, Muramatsu D, Ono K. Usefulness of a Scalp Biopsy for Diagnosing Spinal Sarcoidosis. Intern Med 2024:3143-23. [PMID: 38403764 DOI: 10.2169/internalmedicine.3143-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Affiliation(s)
- Makoto Mori
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Junji Komatsu
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Daiki Muramatsu
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Kenjiro Ono
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Japan
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2
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Watanabe S, Nakajima K, Toshima F, Wakabayashi H, Yoshida S, Yoneyama H, Komatsu J, Konishi T, Kinuya S. Transthyretin amyloid cardiomyopathy disease burden quantified using 99mTc-pyrophosphate SPECT/CT: volumetric parameters versus SUVmax ratio at 1 and 3 hours. J Nucl Cardiol 2023; 30:2721-2735. [PMID: 37605060 PMCID: PMC10682282 DOI: 10.1007/s12350-023-03353-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2023] [Accepted: 07/20/2023] [Indexed: 08/23/2023]
Abstract
BACKGROUND Various parameters derived from technetium-99m pyrophosphate (99mTc-PYP) single-photon emission computed tomography (SPECT) correlate with the severity of transthyretin amyloid cardiomyopathy (ATTR-CM). However, the optimal metrics and image acquisition timing required to quantify the disease burden remain uncertain. METHODS AND RESULTS We retrospectively evaluated 99mTc-PYP SPECT/CT images of 23 patients diagnosed with ATTR-CM using endomyocardial biopsies and/or gene tests. All patients were assessed by SPECT/CT 1 hour after 99mTc-PYP injection, and 13 of them were also assessed at 3 hours. We quantified 99mTc-PYP uptake using the volumetric parameters, cardiac PYP volume (CPV) and cardiac PYP activity (CPA). We also calculated the SUVmax ratios of myocardial SUVmax/blood pool SUVmax, myocardial SUVmax/bone SUVmax, and the SUVmax retention index. We assessed the correlations between uptake parameters and the four functional parameters associated with prognosis, namely left ventricular ejection fraction, global longitudinal strain, myocardial extracellular volume, and troponin T. CPV and CPA correlated more closely than the SUVmax ratios with the four prognostic factors. Significant correlations between volumetric parameters and prognostic factors were equivalent between 1 and 3 hours. CONCLUSIONS The disease burden of ATTR-CM was quantified more accurately by volumetric evaluation of 99mTc-PYP SPECT/CT than SUVmax ratios and the performance was equivalent between 1 and 3 hours.
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Affiliation(s)
- Satoru Watanabe
- Department of Functional Imaging and Artificial Intelligence, Kanazawa University, Kanazawa, Japan.
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
| | - Kenichi Nakajima
- Department of Functional Imaging and Artificial Intelligence, Kanazawa University, Kanazawa, Japan
| | - Fumihito Toshima
- Department of Radiology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hiroshi Wakabayashi
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Shohei Yoshida
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hiroto Yoneyama
- Department of Radiological Technology, Kanazawa University Hospital, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takahiro Konishi
- Department of Radiological Technology, Kanazawa University Hospital, Kanazawa, Japan
| | - Seigo Kinuya
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
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Noguchi-Shinohara M, Yokoyama K, Komatsu J, Masuda K, Kouno M, Yoshita M, Ono K. Exercise program to reduce the risk of cognitive decline and physical frailty in older adults: study protocol for an open label double-arm clinical trial. Front Aging Neurosci 2023; 15:1162765. [PMID: 37273649 PMCID: PMC10235445 DOI: 10.3389/fnagi.2023.1162765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Accepted: 05/02/2023] [Indexed: 06/06/2023] Open
Abstract
Objective It is a big problem that many older adults are physically inactive. Well-known benefits of physical exercise include a decrease in the risk of cognitive decline and physical frailty. Therefore, this study aims to examine whether our proposed exercise program can prevent cognitive decline and improve physical function in the elderly. Methods This study will include nondemented older adults (n = 103) without regular exercise habits. The trial will include a physical exercise training program (once a week) and nutritional lectures (once a month) over 5 months and follow-up for ≥1 year. The primary endpoint is the program's efficacy in preventing cognitive decline, as assessed by changes in the memory performance index of the mild cognitive impairment (MCI) screen; the secondary endpoints are the incidence of MCI and dementia, physical testing, and frailty proportion. In the exploratory phase of the study, we will elucidate the underlying diseases causing MCI in community-dwelling older adults by neuroimaging. Discussion This double-arm trial that aims to assess the impact of physical exercise on nondemented older adults' cognitive and physical function. Furthermore, our newly developed exercise program will be easy for older adults to undertake.Clinical Trial Registration: https://clinicaltrials.gov/, identifier [jRCT 1040220140].
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Affiliation(s)
- Moeko Noguchi-Shinohara
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kunihiko Yokoyama
- Department of Thyroidology, Public Central Hospital of Matto Ishikawa, Hakusan, Japan
| | - Junji Komatsu
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Preemptive Medicine for Dementia, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazumi Masuda
- Faculty of Human Sciences, Kanazawa University, Kanazawa, Japan
| | - Mitsunobu Kouno
- Faculty of Health Sciences, Kinjo University, Hakusan, Japan
| | - Mitsuhiro Yoshita
- Department of Neurology, National Hospital Organization, Hokuriku National Hospital, Nanto, Japan
| | - Kenjiro Ono
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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Noguchi-Shinohara M, Murakami H, Sakashita Y, Mori Y, Komatsu J, Muramatsu D, Hikishima S, Ono K. Plasma amyloid-β biomarkers are associated with Alzheimer's disease comorbidity in Lewy body disease. Parkinsonism Relat Disord 2023; 111:105445. [PMID: 37201326 DOI: 10.1016/j.parkreldis.2023.105445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/10/2023] [Accepted: 05/12/2023] [Indexed: 05/20/2023]
Abstract
No blood biomarkers which can identify Alzheimer's disease pathology in Lewy body disease (LBD) have ever been established. We showed that the plasma amyloid-β (Aβ) 1-42/Aβ1-40 ratio was significantly decreased in patients with Aβ+ LBD compared with those with Aβ- LBD and it might be a useful biomarker.
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Affiliation(s)
- Moeko Noguchi-Shinohara
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hidetomo Murakami
- Department of Neurology, School of Medicine, Showa University, Tokyo, Japan
| | - Yasuhiro Sakashita
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Yukiko Mori
- Department of Neurology, School of Medicine, Showa University, Tokyo, Japan
| | - Junji Komatsu
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan; Department of Preemptive Medicine for Dementia, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Daiki Muramatsu
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Sadao Hikishima
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kenjiro Ono
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.
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Noguchi-Shinohara M, Hamaguchi T, Sakai K, Komatsu J, Iwasa K, Horimoto M, Nakamura H, Yamada M, Ono K. Effects of Melissa officinalis Extract Containing Rosmarinic Acid on Cognition in Older Adults Without Dementia: A Randomized Controlled Trial. J Alzheimers Dis 2023; 91:805-814. [PMID: 36502333 DOI: 10.3233/jad-220953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND Previous in vitro and in vivo studies on Alzheimer's disease (AD) models have reported that rosmarinic acid (RA) can inhibit the formation of amyloid-β fibrils as well as the oligomerization and deposition of amyloid-β protein. Melissa officinalis (M. officinalis) extract containing 500 mg of RA is tolerable and safe in healthy individuals and patients with mild AD dementia. OBJECTIVE This randomized placebo-controlled double-blind trial aimed to assess the effects of M. officinalis extract on cognition in older adults without dementia. METHODS This study included individuals who were diagnosed with subjective or mild cognitive impairment (n = 323). The trial involved M. officinalis extract supplementation (500 mg of RA per day) period of 96 weeks followed by a washout period of 24 weeks. The primary endpoint was the Alzheimer's Disease Assessment Scale-cognitive subscale score, and the secondary endpoints were other cognitive measure results as well as safety and tolerability. RESULTS There were no significant differences in cognitive measures between the placebo and M. officinalis groups from baseline to 96 weeks. However, based on the analysis of Clinical Dementia Rating Sum of Boxes scores in participants without hypertension, the score was found to be increased by 0.006 and decreased by 0.085 in the M. officinalis and placebo groups, respectively; this difference was statistically significant (p = 0.036). Furthermore, there were no differences in vital signs, physical and neurological measures, or hippocampal volume between the two groups. CONCLUSION These results indicate that M. officinalis extract may help prevent cognitive decline in older adults without hypertension.
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Affiliation(s)
- Moeko Noguchi-Shinohara
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Tsuyoshi Hamaguchi
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.,Department of Neurology, Kanazawa Medical University, Uchinada, Kahoku, Ishikawa, Japan
| | - Kenji Sakai
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.,Department of Preemptive Medicine for Dementia, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuo Iwasa
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.,Department of Health and Medical Sciences, Ishikawa Prefectural Nursing University, Hakui, Ishikawa, Japan
| | - Mai Horimoto
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.,Department of Preemptive Medicine for Dementia, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hiroyuki Nakamura
- Department of Environmental and Preventive Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Masahito Yamada
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.,Kudanzaka Hospital, Tokyo, Japan
| | - Kenjiro Ono
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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Watanabe S, Nakajima K, Wakabayashi H, Yoneyama H, Yoshida S, Komatsu J, Konishi T, Inaki A, Kinuya S. Volumetric evaluation of 99mTc-pyrophosphate SPECT/CT for transthyretin cardiac amyloidosis: Methodology and correlation with cardiac functional parameters. J Nucl Cardiol 2022; 29:3102-3110. [PMID: 34907500 PMCID: PMC9834362 DOI: 10.1007/s12350-021-02857-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 10/23/2021] [Indexed: 01/22/2023]
Abstract
BACKGROUND Volumetric evaluation of 99mTechnetium-pyrophosphate (99mTc-PYP) SPECT/CT is a useful method for assessing transthyretin cardiac amyloidosis (ATTR-CA). We investigated the methodology and assessed its relationship with conventional parameters. METHODS AND RESULTS We retrospectively evaluated 99mTc-PYP SPECT/CT scans of 25 patients who underwent endomyocardial biopsy and/or gene testing. Fourteen (56%) patients were diagnosed with ATTR-CA. SPECT/CT images were acquired at 3 hours after injection. Total volumes of the myocardial regions where uptakes were > 1.2 and 1.4 × aortic blood pool SUVmax were evaluated and defined as cardiac pyrophosphate volume (CPV1.2 and CPV1.4). The heart-to-contralateral lung (H/CL) ratio and myocardial SUVmax were also calculated. CPV1.2 achieved the highest sensitivity and specificity in diagnosing ATTR-CA. In patients diagnosed with ATTR-CA (n = 14), CPV1.2 negatively correlated with left ventricular ejection fraction and positively correlated with left ventricular posterior wall thickness and QRS duration. The correlation was stronger in CPV1.2 than in the H/CL ratio and SUVmax. CONCLUSION Volumetric evaluation of 99mTc-PYP SPECT/CT may be superior to the H/CL ratio and SUVmax in assessing the disease burden of ATTR-CA. Larger studies are warranted to clarify whether volumetric measurement can assess prognosis and disease progression.
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Affiliation(s)
- Satoru Watanabe
- Department of Functional Imaging and Artificial Intelligence, Kanazawa University, Kanazawa, Japan.
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan.
| | - Kenichi Nakajima
- Department of Functional Imaging and Artificial Intelligence, Kanazawa University, Kanazawa, Japan
| | - Hiroshi Wakabayashi
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Hiroto Yoneyama
- Department of Radiology, Kanazawa University Hospital, Kanazawa, Japan
| | - Shohei Yoshida
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Takahiro Konishi
- Department of Radiology, Kanazawa University Hospital, Kanazawa, Japan
| | - Anri Inaki
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
| | - Seigo Kinuya
- Department of Nuclear Medicine, Kanazawa University Hospital, 13-1 Takara-machi, Kanazawa, 920-8641, Japan
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Hikishima S, Sakai K, Akagi A, Yamaguchi H, Shibata S, Hayashi K, Nakano H, Kanemoto M, Usui Y, Taniguchi Y, Komatsu J, Nakamura-Shindo K, Nozaki I, Hamaguchi T, Ono K, Iwasa K, Yamada M. Deterioration after Liver Transplantation and Transthyretin Stabilizer Administration in a Patient with ATTRv Amyloidosis with a Leu58Arg (p.Leu78Arg) TTR Variant. Intern Med 2022; 61:2347-2351. [PMID: 35283385 PMCID: PMC9424092 DOI: 10.2169/internalmedicine.8945-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
We herein report a 44-year-old Japanese man with hereditary transthyretin amyloidosis (ATTRv amyloidosis) harboring the variant Leu58Arg (p.Leu78Arg) in TTR in whom we conducted an observational study with liver transplantation (LT) and transthyretin (TTR) stabilizers (tafamidis and diflunisal) for 9 years. This patient showed gradual deterioration of sensory, motor, and autonomic neuropathy symptoms after LT. Furthermore, cardiac amyloidosis gradually developed. Although the present case showed deterioration of the symptoms after disease-modifying treatments, LT might be suitable in patients with the same variant if they are young and in good condition due to a long survival after LT.
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Affiliation(s)
- Sadao Hikishima
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Kenji Sakai
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Akio Akagi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Hiroki Yamaguchi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Shutaro Shibata
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Koji Hayashi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Hiroto Nakano
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Mizuki Kanemoto
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Yuta Usui
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Yu Taniguchi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Keiko Nakamura-Shindo
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Ichiro Nozaki
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Tsuyoshi Hamaguchi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Kenjiro Ono
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Kazuo Iwasa
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
| | - Masahito Yamada
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Japan
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8
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Nakajima K, Saito S, Chen Z, Komatsu J, Maruyama K, Shirasaki N, Watanabe S, Inaki A, Ono K, Kinuya S. Diagnosis of Parkinson syndrome and Lewy-body disease using 123I-ioflupane images and a model with image features based on machine learning. Ann Nucl Med 2022; 36:765-776. [PMID: 35798937 PMCID: PMC9304062 DOI: 10.1007/s12149-022-01759-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Accepted: 05/25/2022] [Indexed: 11/27/2022]
Abstract
OBJECTIVES 123I-ioflupane has been clinically applied to dopamine transporter imaging and visual interpretation assisted by region-of-interest (ROI)-based parameters. We aimed to build a multivariable model incorporating machine learning (ML) that could accurately differentiate abnormal profiles on 123I-ioflupane images and diagnose Parkinson syndrome or disease and dementia with Lewy bodies (PS/PD/DLB). METHODS We assessed 123I-ioflupane images from 239 patients with suspected neurodegenerative diseases or dementia and classified them as having PS/PD/DLB or non-PS/PD/DLB. The image features of high or low uptake (F1), symmetry or asymmetry (F2), and comma- or dot-like patterns of caudate and putamen uptake (F3) were analyzed on 137 images from one hospital for training. Direct judgement of normal or abnormal profiles (F4) was also examined. Machine learning methods included logistic regression (LR), k-nearest neighbors (kNNs), and gradient boosted trees (GBTs) that were assessed using fourfold cross-validation. We generated the following multivariable models for the test database (n = 102 from another hospital): Model 1, ROI-based measurements of specific binding ratios and asymmetry indices; Model 2, ML-based judgement of abnormalities (F4); and Model 3, features F1, F2 and F3, plus patient age. Diagnostic accuracy was compared using areas under receiver-operating characteristics curves (AUC). RESULTS The AUC was high with all ML methods (0.92-0.96) for high or low uptake. The AUC was the highest for symmetry or asymmetry with the kNN method (AUC 0.75) and the comma-dot feature with the GBT method (AUC 0.94). Based on the test data set, the diagnostic accuracy for a diagnosis of PS/PD/DLB was 0.86 ± 0.04 (SE), 0.87 ± 0.04, and 0.93 ± 0.02 for Models 1, 2 and 3, respectively. The AUC was optimal for Model 3, and significantly differed between Models 3 and 1 (p = 0.027), and 3 and 2 (p = 0.029). CONCLUSIONS Image features such as high or low uptake, symmetry or asymmetry, and comma- or dot-like profiles can be determined using ML. The diagnostic accuracy of differentiating PS/PD/DLB was the highest for the multivariate model with three features and age compared with the conventional ROI-based method.
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Affiliation(s)
- Kenichi Nakajima
- Department of Functional Imaging and Artificial Intelligence, Kanazawa University Graduate School of Advanced Preventive Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
| | - Shintaro Saito
- Department of Nuclear Medicine, Kanazawa University, Kanazawa, Japan
| | - Zhuoqing Chen
- Department of Nuclear Medicine, Kanazawa University, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Koji Maruyama
- Wolfram Research Inc., Champaign, IL, USA
- Department of Chemistry and Materials Science, Osaka City University, Osaka, Japan
| | - Naoki Shirasaki
- Department of Neurosurgery, Kaga Medical Center, Kaga, Japan
| | - Satoru Watanabe
- Department of Functional Imaging and Artificial Intelligence, Kanazawa University Graduate School of Advanced Preventive Medical Sciences, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - Anri Inaki
- Department of Nuclear Medicine, Kanazawa University, Kanazawa, Japan
| | - Kenjiro Ono
- Department of Neurology, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Seigo Kinuya
- Department of Nuclear Medicine, Kanazawa University, Kanazawa, Japan
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Komatsu J, Nishimura Y, Sugane H, Hosoda H, Imai R, Nakaoka Y, Nishida K, Seki S, Kubokawa S, Kawai K, Hamashige N, Doi Y. Acute circumflex coronary artery occlusion; dilemma in diagnosis and management. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.1476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Acute coronary syndrome (ACS) with occlusion of the circumflex coronary artery (LCX) poses diagnostic dilemma that may lead to a delay in reperfusion.
Purpose
We sought to assess the diagnostic significance of initial electrocardiography (ECG) changes in patients with acute LCX occlusion in relation to its clinical characteristics and the management.
Methods
From consecutive 1269 patients with ACS who were admitted to our institution during a 5-year period (2015–2019), 138 patients with ACS due to LCX occlusion were analyzed for clinical, ECG and angiographic presentation, and the door-to-balloon (DTB) time. ECG changes were classified into 4 different patterns: 1) ST-elevation in inferior/lateral leads (ST-E); 2) ST-depression in V1-V4 (ST-D); 3) no significant ST changes (No-ST); and 4) others.
Results
(1) No-ST pattern was found in 47 patients (34%), ST-E in 47 patients (34%), ST-D in 25 patients (18%) and others in 19 patients (14%). (2) Occlusion site: Proximal LCX; 16 patients with No-ST (34%), 6 patients with ST-E (13%), 13 patients with ST-D (52%). Distal LCX; 28 patients with No-ST (60%), 35 patients with ST-E (74%), 11 patients with ST-D (44%) (p=0.007). (Table) (3) Echocardiographic identification of left ventricular asynergy; 31 patients with No-ST (66%), 38 patients with ST-E (81%), 22 patients with ST-D (88%). (4) No-ST group was associated with longer DTB time; 245 min (170–562 min), compared to 93 min (83–121 min) in ST-E group and 97 min (70–129 min) in ST-D group (p<0.0001). DTB time ≤90 min was significantly uncommon in No-ST group (11%), compared to ST-E group (46%) and ST-D group (43%) (p=0.0004). (Figure)
Conclusion
One-third of the patients with LCX-ACS showed no ST changes, resulting in significantly longer DTB time. Improving diagnostic accuracy with anticipation for LCX-ACS and the use of echocardiographic examination and also the possible application of posterior leads (V7-V9) recording is challenging but critical to avoid delayed reperfusion and to improve outcomes in these patients without ECG changes.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- J Komatsu
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Nishimura
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - H Sugane
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - H Hosoda
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - R Imai
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Nakaoka
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - K Nishida
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - S Seki
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - S Kubokawa
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - K Kawai
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - N Hamashige
- Chikamori Hospital, Cardiology, Kochi, Japan
| | - Y Doi
- Chikamori Hospital, Cardiomyopathy Institute, Kochi, Japan
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Nakajima K, Okuda K, Komatsu J. What does diagnostic threshold mean? Deterministic and probabilistic considerations. J Nucl Cardiol 2021; 28:1702-1706. [PMID: 31549288 DOI: 10.1007/s12350-019-01899-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 09/09/2019] [Indexed: 12/28/2022]
Affiliation(s)
- Kenichi Nakajima
- Department of Functional Imaging and Artificial Intelligence, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
| | - Koichi Okuda
- Department of Physics, Kanazawa Medical University, Kahoku, Japan
| | - Junji Komatsu
- Department of Neurology, Kanazawa University Hospital, Kanazawa, Japan
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Noguchi-Shinohara M, Ono K, Hamaguchi T, Nagai T, Kobayashi S, Komatsu J, Samuraki-Yokohama M, Iwasa K, Yokoyama K, Nakamura H, Yamada M. Safety and efficacy of Melissa officinalis extract containing rosmarinic acid in the prevention of Alzheimer's disease progression. Sci Rep 2020; 10:18627. [PMID: 33122694 PMCID: PMC7596544 DOI: 10.1038/s41598-020-73729-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 09/22/2020] [Indexed: 12/27/2022] Open
Abstract
We conducted a randomized placebo-controlled double-blind 24-week trial using Melissa officinalis (M. officinalis) extract richly containing rosmarinic acid (RA) on patients with mild dementia due to Alzheimer's disease (AD) with the aim to examine the safety and tolerability (primary endpoint) of RA (500 mg daily) and its clinical effects and disease-related biomarker changes (secondary endpoints). Patients (n = 23) diagnosed with mild dementia due to probable AD were randomized to either the placebo or M. officinalis extract group. No differences in vital signs or physical and neurologic examination results were detected between the M. officinalis and placebo groups. No serious adverse events occurred. There were no significant differences in cognitive measures; however, the mean Neuropsychiatric Inventory Questionnaire (NPI-Q) score improved by 0.5 points in the M. officinalis group and worsened by 0.7 points in the placebo group between the baseline and 24-week visit, indicating a significant difference (P = 0.012). No significant differences were apparent in disease-related biomarkers between the groups. M. officinalis extract containing 500 mg of RA taken daily was safe and well-tolerated by patients with mild dementia due to AD. Our results suggest that RA may help prevent the worsening of AD-related neuropsychiatric symptoms.Trial registration: The registration number for this clinical trial is UMIN000007734 (16/04/2012).
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Affiliation(s)
- Moeko Noguchi-Shinohara
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
- Department of Preemptive Medicine for Dementia, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Kenjiro Ono
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
- Division of Neurology, Department of Internal Medicine, Showa University School of Medicine, Hatano-dai, Shinagawa-ku, Tokyo, 142-8666, Japan
| | - Tsuyoshi Hamaguchi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - Toshitada Nagai
- Department of Food and Life-Science, Takasaki University of Health and Welfare, Gunma, Japan
| | - Shoko Kobayashi
- Research Center for Food Safety, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
- Department of Preemptive Medicine for Dementia, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Miharu Samuraki-Yokohama
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
| | - Kazuo Iwasa
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan
- Department of Health and Medical Sciences, Ishikawa Prefectural Nursing University, Kahoku, Japan
| | - Kunihiko Yokoyama
- Department of Thyroidology, Public Central Hospital of Matto Ishikawa, Hakusan, Japan
| | - Hiroyuki Nakamura
- Department of Environmental and Preventive Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Masahito Yamada
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa University, 13-1 Takara-machi, Kanazawa, 920-8640, Japan.
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Usui Y, Nakano H, Komatsu J, Nakamichi K, Saijo M, Takano S, Kamiya KI, Hamaguchi T, Yamada M. Progressive multifocal leukoencephalopathy during treatment with lenalidomide and elotuzumab for multiple myeloma. Leuk Lymphoma 2020; 61:2234-2237. [PMID: 32420767 DOI: 10.1080/10428194.2020.1765237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Yuta Usui
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Hiroto Nakano
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kazuo Nakamichi
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | - Masayuki Saijo
- Department of Virology 1, National Institute of Infectious Diseases, Tokyo, Japan
| | | | - Ken-Ichi Kamiya
- Department of Hematology, Fukui Red Cross Hospital, Fukui, Japan
| | - Tsuyoshi Hamaguchi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Masahito Yamada
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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Yamada M, Komatsu J, Nakamura K, Sakai K, Samuraki-Yokohama M, Nakajima K, Yoshita M. Diagnostic Criteria for Dementia with Lewy Bodies: Updates and Future Directions. J Mov Disord 2019; 13:1-10. [PMID: 31694357 PMCID: PMC6987529 DOI: 10.14802/jmd.19052] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2019] [Accepted: 09/06/2019] [Indexed: 12/11/2022] Open
Abstract
The aim of this article is to describe the 2017 revised consensus criteria for the clinical diagnosis of dementia with Lewy bodies (DLB) with future directions for the diagnostic criteria. The criteria for the clinical diagnosis of probable and possible DLB were first published as the first consensus report in 1996 and were revised in the third consensus report in 2005. After discussion at the International DLB Conference in Fort Lauderdale, Florida, USA, in 2015, the International DLB Consortium published the fourth consensus report including the revised consensus criteria in 2017. The 2017 revised criteria clearly distinguish between clinical features and diagnostic biomarkers. Significant new information about previously reported aspects of DLB has been incorporated, with increased diagnostic weighting given to rapid eye movement (REM) sleep behavior disorder (RBD) and iodine-123-metaiodobenzylguanidine (MIBG) myocardial scintigraphy. Future directions include the development of the criteria for early diagnosis (prodromal DLB) and the establishment of new biomarkers that directly indicate Lewy-related pathology, including α-synuclein imaging, biopsies of peripheral tissues (skin, etc.) for the demonstration of α-synuclein deposition, and biochemical markers (cerebrospinal fluid/blood), as well as the pathological evaluation of the sensitivity and specificity of the 2017 revised diagnostic criteria. In conclusion, the revised consensus criteria for the clinical diagnosis of DLB were reported with the incorporation of new information about DLB in 2017. Future directions include the development of the criteria for early diagnosis and the establishment of biomarkers directly indicative of Lewy-related pathology.
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Affiliation(s)
- Masahito Yamada
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Keiko Nakamura
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kenji Sakai
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Miharu Samuraki-Yokohama
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kenichi Nakajima
- Department of Nuclear Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Mitsuhiro Yoshita
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan.,Department of Neurology, National Hospital Organization, Hokuriku National Hospital, Nanto, Japan
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Hamaguchi T, Komatsu J, Sakai K, Noguchi-Shinohara M, Aoki S, Ikeuchi T, Yamada M. Cerebral hemorrhagic stroke associated with cerebral amyloid angiopathy in young adults about 3 decades after neurosurgeries in their infancy. J Neurol Sci 2019; 399:3-5. [PMID: 30735884 DOI: 10.1016/j.jns.2019.01.051] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2018] [Revised: 01/14/2019] [Accepted: 01/31/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Tsuyoshi Hamaguchi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kenji Sakai
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Moeko Noguchi-Shinohara
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Satoshi Aoki
- Department of Neurosurgery, Toyama Prefectural Central Hospital, Toyama, Japan
| | - Takeshi Ikeuchi
- Department of Molecular Genetics, Brain Research Institute, Niigata University, Niigata, Japan
| | - Masahito Yamada
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.
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15
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Komatsu J, Samuraki M, Nakajima K, Arai H, Arai H, Arai T, Asada T, Fujishiro H, Hanyu H, Iizuka O, Iseki E, Kashihara K, Kosaka K, Maruno H, Mizukami K, Mizuno Y, Mori E, Nakamura H, Nakano S, Nakashima K, Nishio Y, Orimo S, Takahashi A, Taki J, Tokuda T, Urakami K, Utsumi K, Wada K, Washimi Y, Yamashina S, Yamasaki J, Yoshita M, Yamada M. 123I-MIBG myocardial scintigraphy for the diagnosis of DLB: a multicentre 3-year follow-up study. J Neurol Neurosurg Psychiatry 2018; 89:1167-1173. [PMID: 29853532 DOI: 10.1136/jnnp-2017-317398] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 03/26/2018] [Accepted: 05/09/2018] [Indexed: 02/01/2023]
Abstract
BACKGROUND AND PURPOSE We previously reported the usefulness of iodine-123 metaiodobenzylguanidine (123I-MIBG) myocardial scintigraphy for differentiation of dementia with Lewy bodies (DLB) from Alzheimer's disease (AD) in a cross-sectional multicentre study. The aim of this study was, by using reassessed diagnosis after 3-year follow-up, to evaluate the diagnostic accuracy of 123I-MIBG scintigraphy in differentiation of probable DLB from probable AD. METHODS We undertook 3-year follow-up of 133 patients with probable or possible DLB or probable AD who had undergone 123I-MIBG myocardial scintigraphy at baseline. An independent consensus panel made final diagnosis at 3-year follow-up. Based on the final diagnosis, we re-evaluated the diagnostic accuracy of 123I-MIBG scintigraphy performed at baseline. RESULTS Sixty-five patients completed 3-year follow-up assessment. The final diagnoses were probable DLB (n=30), possible DLB (n=3) and probably AD (n=31), and depression (n=1). With a receiver operating characteristic curve analysis of heart-to-mediastinum (H/M) ratios for differentiating probable DLB from probable AD, the sensitivity/specificity were 0.77/0.94 for early images using 2.51 as the threshold of early H/M ratio, and 0.77/0.97 for delayed images using 2.20 as the threshold of delayed H/M ratio. Five of six patients who were diagnosed with possible DLB at baseline and with probable DLB at follow-up had low H/M ratio at baseline. CONCLUSIONS Our follow-up study confirmed high correlation between abnormal cardiac sympathetic activity evaluated with 123I-MIBG myocardial scintigraphy at baseline and the clinical diagnosis of probable DLB at 3-year follow-up. Its diagnostic usefulness in early stage of DLB was suggested. TRIAL REGISTRATION NUMBER UMIN00003419.
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Affiliation(s)
- Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Miharu Samuraki
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
| | - Kenichi Nakajima
- Department of Nuclear Medicine, Kanazawa University Hospital, Kanazawa, Japan
| | - Heii Arai
- Department of Psychiatry, Juntendo University School of Medicine, Tokyo, Japan
| | - Hiroyuki Arai
- Institute of Development, Aging and Cancer, Tohoku University, Sendai, Japan
| | - Tetsuaki Arai
- Department of Neuropsychiatry, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Japan
| | - Takashi Asada
- Department of Neuropsychiatry, Institute of Clinical Medicine, University of Tsukuba, Tsukuba, Japan
| | - Hiroshige Fujishiro
- PET/CT Dementia Research Center, Juntendo Tokyo Koto Geriatric Medical Center, Juntendo University School of Medicine, Tokyo, Japan
| | - Haruo Hanyu
- Department of Geriatric Medicine, Tokyo Medical University, Tokyo, Japan
| | - Osamu Iizuka
- Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Eizo Iseki
- PET/CT Dementia Research Center, Juntendo Tokyo Koto Geriatric Medical Center, Juntendo University School of Medicine, Tokyo, Japan
| | | | - Kenji Kosaka
- Department of Neurology, Medical Care Court Clinic, Yokohama, Japan
| | | | - Katsuyoshi Mizukami
- Faculty of Health and Sport Sciences, Graduate School of Comprehensive Human Sciences, University of Tsukuba, Tsukuba, Japan
| | - Yoshikuni Mizuno
- Department of Neurology, Juntendo University School of Medicine, Tokyo, Japan
| | - Etsuro Mori
- Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroyuki Nakamura
- Department of Environmental and Preventive Medicine, Graduate School of Medical Science, Kanazawa University, Kanazawa, Japan
| | - Seigo Nakano
- Center for Treatment, Care and Research of Dementia, Medical Co. LTA, Tokyo, Japan
| | - Kenji Nakashima
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Yoshiyuki Nishio
- Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Satoshi Orimo
- Department of Neurology, Kanto Central Hospital of the Mutual Aid Association of Public School Teachers, Tokyo, Japan
| | | | - Junichi Taki
- Department of Nuclear Medicine, Kanazawa University Hospital, Kanazawa, Japan
| | - Takahiko Tokuda
- Department of Molecular Pathobiology of Brain Diseases, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Katsuya Urakami
- Department of Biological Regulation, Faculty of Medicine, School of Health Science, Tottori University, Tottori, Japan
| | - Kumiko Utsumi
- Department of Neuropsychiatry, Sunagawa City Medical Center, Sunagawa, Japan
| | - Kenji Wada
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Yukihiko Washimi
- Department for Cognitive Disorders, Hospital of National Center for Geriatrics and Gerontology, Toyota, Japan
| | - Shouhei Yamashina
- Division of Cardiovascular Medicine, Department of Internal Medicine, Ohmori Hospital, Toho University School of Medicine, Tokyo, Japan
| | - Junichi Yamasaki
- Division of Cardiovascular Medicine, Department of Internal Medicine, Ohmori Hospital, Toho University School of Medicine, Tokyo, Japan
| | - Mitsuhiro Yoshita
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan.,Department of Neurology, Hokuriku National Hospital, Toyama, Japan
| | - Masahito Yamada
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Kanazawa, Japan
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16
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Komatsu J, Matsunari I, Samuraki M, Shima K, Noguchi-Shinohara M, Sakai K, Hamaguchi T, Ono K, Matsuda H, Yamada M. Optimization of DARTEL Settings for the Detection of Alzheimer Disease. AJNR Am J Neuroradiol 2018; 39:473-478. [PMID: 29419401 DOI: 10.3174/ajnr.a5509] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2016] [Accepted: 10/30/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Although Diffeomorphic Anatomical Registration Through Exponentiated Lie Algebra (DARTEL) has been introduced as an alternative to conventional voxel-based morphometry, there are scant data available regarding the optimal image-processing settings. The aim of this study was to optimize image-processing and ROI settings for the diagnosis of Alzheimer disease using DARTEL. MATERIALS AND METHODS Between May 2002 and August 2014, we selected 158 patients with Alzheimer disease and 198 age-matched healthy subjects; 158 healthy subjects served as the control group against the patients with Alzheimer disease, and the remaining 40 served as the healthy data base. Structural MR images were obtained in all the participants and were processed using DARTEL-based voxel-based morphometry with a variety of settings. These included modulated or nonmodulated, nonsmoothed or smoothed settings with a 4-, 8-, 12-, 16-, or 20-mm kernel size. A z score was calculated for each ROI, and univariate and multivariate logistic regression analyses were performed to determine the optimal ROI settings for each dataset. The optimal settings were defined as those demonstrating the highest χ2 test statistics in the multivariate logistic regression analyses. Finally, using the optimal settings, we obtained receiver operating characteristic curves. The models were verified using 10-fold cross-validation. RESULTS The optimal settings were obtained using the hippocampus and precuneus as ROIs without modulation and smoothing. The average area under the curve was 0.845 (95% confidence interval, 0.788-0.902). CONCLUSIONS We recommend using the precuneus and hippocampus as ROIs without modulation and smoothing for DARTEL-based voxel-based morphometry as a tool for diagnosing Alzheimer disease.
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Affiliation(s)
- J Komatsu
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan
| | - I Matsunari
- Department of Clinical Research (I.M.), Medical and Pharmacological Research Center Foundation, Hakui, Ishikawa, Japan .,Division of Nuclear Medicine (I.M.), Department of Radiology, Saitama Medical University Hospital, Iruma-gun, Saitama, Japan
| | - M Samuraki
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan
| | - K Shima
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan
| | - M Noguchi-Shinohara
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan
| | - K Sakai
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan
| | - T Hamaguchi
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan
| | - K Ono
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan.,Department of Neurology (K.O.), Showa University School of Medicine, Tokyo, Japan
| | - H Matsuda
- Integrative Brain Imaging Center (H.M.), National Center of Neurology and Psychiatry, Kodaira, Tokyo, Japan
| | - M Yamada
- From the Department of Neurology and Neurobiology of Aging (J.K., M.S., K. Shima, M.N.-S., K. Sakai, T.H., K.O., M.Y.), Kanazawa University Graduate School of Medical Sciences, Takara-machi, Ishikawa, Japan
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Nakano H, Ikeda T, Shimizu A, Ozaki T, Komatsu J, Nozaki I, Hamaguchi T, Iwasa K, Tanaka K, Yamada M. Total tau protein in cerebrospinal fluid as a prognostic marker in anti-N-methyl-D-aspartate receptor encephalitis. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Matthews RB, Herbst RJ, Kocamustafaogullari G, Chan SH, Wu JM, Chuang CF, Cannon NS, Wire GL, Barner JO, Guenther RJ, Freshley MD, Crouthamel CE, Kuhn WL, Peters RD, Simonson SA, Watzel GVP, Auler I, Dufrane KF, Naughton MD, Romeo G, Notea A, Segal Y, Campan JL, Pinard-Legry G, Vignes AJ, Loomis GG, Shumway RW, Enokido Y, Yamanouchi S, Komatsu J, Itaki T, Sandberg JV, Routti JT, Parvez A, Becker M, Lorenzini E, Sola PG, Spiga M. Authors. NUCL TECHNOL 2017. [DOI: 10.13182/nt83-a33298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Enokido Y, Yamanouchi S, Komatsu J, Itaki T. Development of a Shielded Ion Microprobe Analyzer (SIMA) and Its Application to Fast Reactor Fuel Elements. NUCL TECHNOL 2017. [DOI: 10.13182/nt83-a33311] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuji Enokido
- Power Reactor and Nuclear Fuel Development Corporation Oarai Engineering Center, Analysis and Evaluation Section Fuel and Material Division, 4002 Narita-machi, Oarai Higashi Ibaraki-gun, Ibaraki, 311-13 Japan
| | - Sadamu Yamanouchi
- Power Reactor and Nuclear Fuel Development Corporation Oarai Engineering Center, Analysis and Evaluation Section Fuel and Material Division, 4002 Narita-machi, Oarai Higashi Ibaraki-gun, Ibaraki, 311-13 Japan
| | - Junji Komatsu
- Power Reactor and Nuclear Fuel Development Corporation Oarai Engineering Center, Analysis and Evaluation Section Fuel and Material Division, 4002 Narita-machi, Oarai Higashi Ibaraki-gun, Ibaraki, 311-13 Japan
| | - Toshiyuki Itaki
- Power Reactor and Nuclear Fuel Development Corporation Oarai Engineering Center, Analysis and Evaluation Section Fuel and Material Division, 4002 Narita-machi, Oarai Higashi Ibaraki-gun, Ibaraki, 311-13 Japan
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20
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Noguchi-Shinohara M, Komatsu J, Samuraki M, Matsunari I, Ikeda T, Sakai K, Hamaguchi T, Ono K, Nakamura H, Yamada M. Cerebral Amyloid Angiopathy-Related Microbleeds and Cerebrospinal Fluid Biomarkers in Alzheimer’s Disease. J Alzheimers Dis 2016; 55:905-913. [DOI: 10.3233/jad-160651] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Moeko Noguchi-Shinohara
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Miharu Samuraki
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Ichiro Matsunari
- Department of Clinical Research, the Medical and Pharmacological Research Center Foundation, Hakui, Japan, Division of Nuclear Medicine, Department of Radiology, Saitama Medical University Hospital, Saitama, Japan
| | - Tokuhei Ikeda
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kenji Sakai
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Tsuyoshi Hamaguchi
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Kenjiro Ono
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
- Department of Neurology, Showa University School of Medicine
| | - Hiroyuki Nakamura
- Department of Environmental and Preventive Medicine, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
| | - Masahito Yamada
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences, Kanazawa, Japan
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21
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Komatsu J, Sakai K, Hamaguchi T, Sugiyama Y, Iwasa K, Yamada M. Creutzfeldt-Jakob disease associated with a V203I homozygous mutation in the prion protein gene. Prion 2015; 8:336-8. [PMID: 25495585 DOI: 10.4161/19336896.2014.971569] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
We report a Japanese patient with Creutzfeldt-Jakob disease (CJD) with a V203I homozygous mutation of the prion protein gene (PRNP). A 73-year-old woman developed rapidly progressive gait disturbance and cognitive dysfunction. Four months after the onset, she entered a state of an akinetic mutism. Gene analysis revealed a homozygous V203I mutation in the PRNP. Familial CJD with a V203I mutation is rare, and all previously reported cases had a heterozygous mutation showing manifestations similar to those of typical sporadic CJD. Although genetic prion diseases with homozygous PRNP mutations often present with an earlier onset and more rapid clinical course than those with heterozygous mutations, no difference was found in clinical phenotype between our homozygous case and reported heterozygous cases.
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Affiliation(s)
- Junji Komatsu
- a Department of Neurology and Neurobiology of Aging ; Kanazawa University Graduate School of Medical Sciences ; Kanazawa , Japan
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Takahashi R, Ono K, Shibata S, Nakamura K, Komatsu J, Ikeda Y, Ikeda T, Samuraki M, Sakai K, Iwasa K, Kayano D, Yamada M. Efficacy of diflunisal on autonomic dysfunction of late-onset familial amyloid polyneuropathy (TTR Val30Met) in a Japanese endemic area. J Neurol Sci 2014; 345:231-5. [DOI: 10.1016/j.jns.2014.07.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Revised: 07/03/2014] [Accepted: 07/07/2014] [Indexed: 10/25/2022]
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Komatsu J, Iwasa K, Yanase D, Yamada M. Inclusion body myopathy with Paget disease of the bone and frontotemporal dementia associated with a novel G156S mutation in the VCP gene. Muscle Nerve 2013; 48:995-996. [PMID: 23868359 DOI: 10.1002/mus.23960] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2013] [Revised: 07/04/2013] [Accepted: 07/08/2013] [Indexed: 01/31/2023]
Affiliation(s)
- Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Sciences
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Komatsu J, Ono K, Yanase D, Samuraki M, Shima K, Kuwano R, Matsunari I, Yamada M. Imaging findings of familial dementia with a tau R406W mutation. Acta Neurol Belg 2011; 111:374-375. [PMID: 22368988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Affiliation(s)
- Junji Komatsu
- Department of Neurology and Neurobiology of Aging, Kanazawa University Graduate School of Medical Science, Japan
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25
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McInnis D, Kurashima R, Shelly T, Komatsu J, Edu J, Pahio E. Prerelease exposure to methyl eugenol increases the mating competitiveness of sterile males of the oriental fruit fly (Diptera: Tephritidae) in a Hawaiian orchard. J Econ Entomol 2011; 104:1969-1978. [PMID: 22299359 DOI: 10.1603/ec11134] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Males of the oriental fruit fly, Bactrocera dorsalis (Hendel), are strongly attracted to methyl eugenol (ME), and recent work demonstrated that ingestion of this chemical enhances male mating success, apparently owing its role as a precursor in the synthesis of the male sex pheromone. The current study expanded upon earlier laboratory and field-cage experiments by assessing whether prerelease exposure to ME increased the mating competitiveness of mass-reared, sterile males in Hawaiian orchards. Releases of sterile males from a pupal color-based sexing strain were made weekly in two fruit orchards over 8 mo, with the sterile males at one site given ME for 24 h before release (treated) and the sterile males at the other site given no ME before release (control). Fruits were collected periodically during the study period, and eggs were dissected and incubated to score hatch rate. At both sites, releases of sterile males increased the proportion of unhatched eggs well above prerelease levels, but the incidence of egg sterility was consistently, and statistically, greater in the orchard receiving ME-exposed males. Computed over the entire release period, the average value of Fried's competitive index (that characterizes the mating success of sterile males relative to their wild counterparts) for ME-treated males was 3.5 times greater than that for control males, although this difference was not statistically significant. However, when computed over the period during which egg sterility values were elevated and stable, presumably when females inseminated before the releases were rare or absent, the competitive indices were significantly higher for ME-treated sterile males. The implications of these results for implementing the Sterile Insect Technique against this species are discussed.
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Affiliation(s)
- D McInnis
- USDA-ARS, 64 Nowelo Street, Hilo, HI 96720, USA.
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Komatsu J, Koyama H, Maeda N, Aratani Y. Earlier onset of neutrophil-mediated inflammation in the ultraviolet-exposed skin of mice deficient in myeloperoxidase and NADPH oxidase. Inflamm Res 2006; 55:200-6. [PMID: 16830107 DOI: 10.1007/s00011-006-0071-3] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE AND DESIGN This study examined the role of neutrophil-derived reactive oxygen species (ROS) in neutrophil recruitment into ultraviolet B (UVB)-exposed skin of mice. METHODS Mouse dorsal skin was irradiated with UVB (600 mJ/cm2). Accumulation of neutrophils within the inflammatory sites was observed histochemically. Keratinocyte-derived chemokine (KC) and macrophage inflammatory protein 2 (MIP-2) were quantified, and in vivo chemotaxis of neutrophils toward KC and MIP-2 was examined. RESULTS UVB exposure of mice deficient in myeloperoxidase (MPO), NADPH oxidase, or both, caused skin neutrophil infiltration peaking at 60, 48, and 48 h, respectively, which was earlier than the 72-h peak in wild-type mice. MIP-2 level was higher in mutant than wild-type mice. Mutant neutrophils produced more MIP-2 in vitro. Neutrophil migration toward a localized source of KC was higher in mutant than wild type mice. NADPH oxidase deficiency had a greater effect on migration than MPO deficiency. CONCLUSIONS These results suggest that ROS produced by neutrophils regulate expression of MIP-2 and migration of neutrophils toward KC. This may explain the earlier infiltration of mutant neutrophils in response to UVB.
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Affiliation(s)
- J Komatsu
- Kihara Institute for Biological Research, Yokohama City University, Maioka-cho 641-12, Totsuka, Yokohama, 244-0813, Japan
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Komatsu J, Nakano M, Kurita H, Takashima T, Katsura S, Mizuno A. Ice-water interface migration by temperature controlling for stretching of DNA molecules. J Biomol Struct Dyn 2004; 22:331-7. [PMID: 15473706 DOI: 10.1080/07391102.2004.10507004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
This report shows a new DNA stretching method using migration of an ice-water interface. DNA molecules were stretched accompanying the migration of the solid-liquid interface and immobilized in frozen area. This simple method needs no chemical modification to keep DNA in the stretched form. For full stretching of DNA molecules, one terminus of the DNA molecules were anchored on silanized substrate. The anchored DNA molecules were stretched by freezing the DNA solution. The stretched DNA molecules were observed after sublimation of the frozen solution keeping its stretched form on silanized surface which had no attractive interaction with DNA molecules except for the SH-modified terminus in solution. An infrared (IR) laser beam was introduced to a frozen DNA solution through an objective lens for local area melting of the solution. Scanning of the laser irradiation caused stretching and enclosing of DNA molecules in the frozen area followed by migration of the solid-liquid interface.
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Affiliation(s)
- J Komatsu
- Department of Ecological Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi, 441-8580, Japan
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Umemura K, Komatsu J, Uchihashi T, Choi N, Ikawa S, Nishinaka T, Shibata T, Nakayama Y, Katsura S, Mizuno A, Tokumoto H, Ishikawa M, Kuroda R. RecA-double stranded DNA complexes studied by atomic force microscopy. Nucleic Acids Symp Ser 2003:213-4. [PMID: 12903344 DOI: 10.1093/nass/44.1.213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
RecA-double stranded (ds) DNA complexes have been studied by atomic force microscopy (AFM). When the complexes were prepared in the presence of ATP gamma S, fully covered RecA-dsDNA filaments were observed by AFM. When the concentration of RecA proteins was lower, various lengths of filaments were found. The variation of the observed structures may directly reflect the real distribution of the intermediate complexes in the reaction mixture, as the mixture was simply deposited on a mica surface for AFM observation without special fixation or staining. The use of a carbon nanotube (CNT) AFM tip enabled high resolution to reveal the periodicity of RecA-dsDNA filaments. Our observations demonstrated the potential of the AFM method for the structural studies of the RecA-dsDNA complexes, especially their intermediate states.
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Affiliation(s)
- K Umemura
- Joint Research Center for Atom Technology, 1-1-4 Higashi, Tsukuba, Ibaraki 305-0046, Japan
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Takase Y, Oya M, Komatsu J. Clinical and functional comparison between stapled colonic J-pouch low rectal anastomosis and hand-sewn colonic J-pouch anal anastomosis for very low rectal cancer. Surg Today 2002; 32:315-21. [PMID: 12027196 DOI: 10.1007/s005950200045] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
PURPOSE We investigated intersphincteric resection with hand-sewn coloanal anastomosis, which may be an alternative to standard low anterior resection for very low rectal cancer when stapled anastomosis is technically impossible. METHODS The present study compared the clinical and functional results of 16 patients who underwent stapled colonic J-pouch low rectal anastomosis (CJLRA) with those of 15 patients who underwent intersphincteric excision and hand-sewn colonic J-pouch anal anastomosis (CJAA). RESULTS After a median follow-up period of 59 months, local recurrence was found in four patients from the CJAA group, three of whom subsequently underwent curative abdominoperineal resection. Defecatory function 6 and 12 months after surgery did not differ between the groups, although pads were used significantly more frequently in the CJAA group. Anorectal physiologic study before and 12 months after surgery revealed that the internal anal sphincter function was impaired to a larger extent after CJAA than after CJLRA, probably due to the partial or subtotal resection of the internal sphincter, and the anal dilatation during resection and anastomosis. CONCLUSION Although the prevention of intraoperative tumor implantation and the early detection of local recurrence is of utmost importance, CJAA may be an acceptable sphincter-preserving procedure for selected patients in whom stapled anastomosis is impossible.
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Affiliation(s)
- Yasuo Takase
- Department of Surgery, Koshigaya Hospital, Dokkyo University School of Medicine, Saitama, Japan
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Oya M, Sugamata Y, Komatsu J, Ishikawa H, Nozaki M. Poor neorectal evacuation as a cause of impaired defecatory function after low anterior resection: a study using scintigraphic assessment. Surg Today 2002; 32:111-7. [PMID: 11998937 DOI: 10.1007/s005950200002] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE Patients who have undergone low anterior resection (LAR) of the rectum occasionally complain of symptoms related to impaired neorectal evacuation. Using scintigraphy, we assessed neorectal evacuation in 22 patients who underwent LAR and straight anastomosis, and correlated the results with clinical defecatory function, clinical factors, and anorectal manovolumetric parameters. METHODS After the introduction of an artificial stool containing 99mTc-DTPA into the neorectum, sequential lateral gamma images were obtained. From the time-activity curve of radioactivity in the whole pelvis, the time taken to evacuate half of the introduced artificial stool (T(1/2)) and the percentage of artificial stool evacuated in 1 min (Evac1) were calculated. RESULTS The Evac1 was significantly lower in the patients who had undergone LAR than in reference normal volunteers. A long T(1/2) was significantly associated with worse defecatory function. The Evac1 was also significantly lower in patients with a low anastomosis. The rectal sensory threshold was significantly greater in patients with a shorter T(1/2). The maximum tolerable volume of the neorectum was significantly greater in patients with a shorter T(1/2) and a higher Evac1. CONCLUSION Poor neorectal evacuation is associated with impaired defecatory function after LAR. Therefore, it is suggested that optimizing both reservoir function and evacuation of the neorectum would improve defecatory function after LAR.
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Affiliation(s)
- Masatoshi Oya
- Department of Surgery, Koshigaya Hospital, Dokkyo University School of Medicine, Saitama, Japan
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Oya M, Komatsu J, Takase Y, Nakamura T, Ishikawa H. Comparison of defecatory function after colonic J-pouch anastomosis and straight anastomosis for stapled low anterior resection: results of a prospective randomized trial. Surg Today 2002; 32:104-10. [PMID: 11998936 DOI: 10.1007/s005950200001] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
PURPOSE Although defecatory function after low anterior resection for rectal cancer is reported to be better following colonic J-pouch than straight anastomosis, few prospective randomized trials comparing the two forms of anastomosis have been reported. We performed a prospective randomized trial comparing straight anastomosis with colonic J-pouch anastomosis both clinically and physiologically in patients undergoing stapled low colorectal anastomosis. METHODS A total of 42 consecutive patients were intraoperatively randomized to undergo either straight anastomosis or colonic J-pouch anastomosis. Clinical defecatory function was evaluated by a questionnaire answered preoperatively, then 6 and 12 months postoperatively. Anorectal physiological assessment was also carried out before surgery, then 12 months postoperatively. RESULTS The clinical defecatory function assessed 6 months and 12 months after surgery did not differ between the two groups. However, while the length of high-pressure zone was significantly shortened, and (neo)rectal capacity was significantly reduced postoperatively in the straight group, none of these physiological parameters were significantly altered in the pouch group. CONCLUSION Although the aim of colonic J-pouch to preserve reservoir function was physiologically achieved, the improvement in clinical defecatory function was not significant. Thus, further prospective studies are needed to confirm the functional superiority of colonic J-pouch anastomosis for stapled low colorectal anastomosis after low anterior resection.
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Affiliation(s)
- Masatoshi Oya
- Department of Surgery, Koshigaya Hospital, Dokkyo University School of Medicine, Saitama, Japan
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McInnis DO, Shelly TE, Komatsu J. Improving male mating competitiveness and survival in the field for medfly, Ceratitis capitata (Diptera: Tephritidae) SIT programs. Genetica 2002; 116:117-24. [PMID: 12484531 DOI: 10.1023/a:1020919927542] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The success of the sterile insect technique (SIT) depends critically upon mating between released sterilized males and wild females. In Hawaii, improvements in the efficiency of sterile males were attempted on two separate fronts--mating enhancement and survival improvement. In the former, two methods have been investigated--selective breeding and aromatherapy. In the latter, flies which survived in field cages for several days were selected and bred to produce progeny with enhanced survival ability compared to control flies. Regarding mating selection, standard laboratory-reared males that successfully mated with wild females in field cages were allowed to breed. F1 offspring were inbred, then the selection procedure was repeated for four additional cycles. In the aromatherapy procedure, laboratory-reared males were exposed to ginger root oil for several hours 1 day prior to testing in field cages. Compared to controls, the selected flies improved the mating competitiveness of male flies ca. 3-fold, irradiation reduced this increase to ca. 2.5-fold. Exposing the selected, hybrid strain raised the fitness of the lab males to ca. 9-fold that of wild males. In the ongoing survival selection study, we have obtained lines in which the selected males survived ca. 2-fold better than laboratory control males over several days in an outdoor field cage, with food and water provided. The goal is to combine the traits of higher survival and mating ability into a single strain for SIT release.
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Affiliation(s)
- D O McInnis
- USDA-ARS, PBARC, 2727 Woodlawn Drive, Honolulu, HI 96822, USA.
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Mikuni N, Oya M, Komatsu J, Yamana T. A prospective randomized comparison between an open hemorrhoidectomy and a semi-closed (semi-open) hemorrhoidectomy. Surg Today 2002; 32:40-7. [PMID: 11871816 DOI: 10.1007/s595-002-8111-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
A semi-closed hemorrhoidectomy is a popular surgical procedure among Japanese coloproctologists because it is thought that the risk of postoperative bleeding is reduced, and postoperative pain is milder after a semi-closed hemorrhoidectomy than after an open hemorrhoidectomy. However, no prospective randomized trial comparing an open and semi-closed hemorrhoidectomy has yet been published. We conducted a prospective randomized trial comparing both clinically and physiologically an open and semi-closed hemorrhoidectomy. Thirty-four consecutive patients undergoing a hemorrhoidectomy for third-degree hemorrhoids were randomized to receive either an open hemorrhoidectomy (n = 17) or a semi-closed hemorrhoidectomy (n = 17). Postoperative pain was evaluated using an analog scale by the patients themselves. An anorectal physiological study was performed before the operation and 2 months after the operation. Pain at 1 week after operation was significantly more severe after a semi-closed hemorrhoidectomy than after an open hemorrhoidectomy. The postoperative physiological parameters including sphincter pressures did not differ between the two forms of hemorrhoidectomy. However, younger patients and patients having higher sphincter pressures preoperatively had more severe pain at 2 weeks after a semi-closed hemorrhoidectomy. Although both forms of hemorrhoidectomy appear to be almost equivalent, the degree of early postoperative pain may be less after an open hemorrhoidectomy in both young patients and in those patients having high preoperative anal sphincter pressures.
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Affiliation(s)
- Noboru Mikuni
- Department of Surgery, Koshigaya Hospital Dokkyo University School of Medicine, Koshigaya, Saitama, Japan
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Matsuura S, Komatsu J, Hirano K, Yasuda H, Takashima K, Katsura S, Mizuno A. Real-time observation of a single DNA digestion by lambda exonuclease under a fluorescence microscope field. Nucleic Acids Res 2001; 29:E79. [PMID: 11504887 PMCID: PMC55863 DOI: 10.1093/nar/29.16.e79] [Citation(s) in RCA: 59] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
A fluorescence microscopy technique has been developed to visualize the behavior of individual DNA and protein molecules. Real-time direct observation of a single DNA molecule can be used to investigate the dynamics of DNA-protein interactions, such as the DNA digestion reaction by lambda exonuclease. In conventional methods it is impossible to analyze the dynamics of an individual lambda exonuclease molecule on a DNA because they can only observe the average behavior of a number of exonuclease molecules. Observation of a single molecule, on the other hand, can reveal processivity and binding rate of an individual exonuclease molecule. To evaluate the dynamics of lambda exonuclease, a stained lambda DNA molecule with one biotinylated terminal was fixed on an avidin-coated coverslip and straightened using a d.c. electric field. Microscopic observation of digestion of a straightened DNA molecule by lambda exonuclease revealed that the DNA digestion rate was approximately 1000 bases/s and also demonstrated high processivity.
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Affiliation(s)
- S Matsuura
- Department of Ecological Engineering, Toyohashi University of Technology, Tempaku-cho, Toyohashi, Aichi 441-8580, Japan
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Umemura K, Komatsu J, Uchihashi T, Choi N, Ikawa S, Nishinaka T, Shibata T, Nakayama Y, Katsura S, Mizuno A, Tokumoto H, Ishikawa M, Kuroda R. Atomic force microscopy of RecA--DNA complexes using a carbon nanotube tip. Biochem Biophys Res Commun 2001; 281:390-5. [PMID: 11181060 DOI: 10.1006/bbrc.2001.4333] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We report high resolution images of RecA-double stranded (ds) DNA complexes obtained by atomic force microscopy (AFM). When a carbon nanotube (CNT) tip was used, AFM images visualized the 10-nm pitch of RecA-dsDNA complexes and RecA filaments as three-dimensional surface topography without reconstruction analysis. The depth of the notch between two pitches was less than 1 nm. When adsorbed on a soft surface covered with proteins, naked DNA, RecA monomers, RecA hexamers, and short RecA filaments were all clearly resolved in one image. The high resolution images with a CNT tip provided valuable information on the initiation process of RecA-dsDNA complex formation.
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Affiliation(s)
- K Umemura
- Joint Research Center for Atom Technology, 1-1-4 Higashi, Tsukuba, Ibaraki 305-0046, Japan
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Hara Y, Komatsu J, Hiasa G, Ohtsuka T, Suzuki M, Shigematsu Y, Ohkura T, Hamada M, Hiwada K. A 25-year-old patient with low cardiac risk factors having a combination of variant angina and severe coronary arterial lesions--a case report. Angiology 2000; 51:781-5. [PMID: 10999620 DOI: 10.1177/000331970005100911] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
A 25-year-old man with low cardiac risks underwent coronary arteriography because of chest pain at rest. His only risk factors for coronary artery disease was smoking. Both right and left coronary arteries were ectatic and the left anterior descending artery was obstructed. In the acetylcholine provocation test, the left circumflex coronary artery showed severe constriction. Thus, this patient was diagnosed as having a combination of variant angina and occlusive coronary artery disease.
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Affiliation(s)
- Y Hara
- The Second Department of Internal Medicine, Ehime University School of Medicine, Osen-gun, Japan.
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Fujiwara M, Okayasu I, Oritsu M, Komatsu J, Yoshitsugu M, Katoh Y, Bandoh T, Toyoshima H, Kase Y, Sugihara K, Kanno J, Hayashi Y. Significant increase in prostaglandin E-main urinary metabolite by laxative administration: comparison with ulcerative colitis. Digestion 2000; 61:201-6. [PMID: 10773726 DOI: 10.1159/000007758] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
OBJECTIVE To assess the production of prostaglandin E(2), an important chemical mediator in diarrhea induced by laxative administration, a prostaglandin E-main urinary metabolite (7alpha-hydroxy-5,11-diketotetranor-prosta-1,16-dioic acid, PGE-MUM) was measured in healthy volunteers and compared with the values of patients with ulcerative colitis. METHODS PGE-MUM was determined by a simplified immunoassay of bicyclic PGE-MUM and analyzed for the influence of laxative administration and active/remission phases of ulcerative colitis. RESULTS Administration of laxatives induced a significant increase in PGE-MUM in healthy volunteers. A significant elevation was also found in the active as compared with the remission phase of ulcerative colitis. The PGE-MUM levels were significantly correlated with our modified Talstad scores, clinical disease activity indices in ulcerative colitis. It was confirmed by time course studies of individual patients that changes in PGE-MUM correlated well with colitis activity. CONCLUSION Laxative administration induces production of prostaglandin E(2) as one of the chemical mediators, although its production grade is relatively low as compared with ulcerative colitis in the active phase.
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Affiliation(s)
- M Fujiwara
- Department of Clinical Pathology, Japanese Red Cross Medical Center, Hiroo, Shibuya-ku, Tokyo, Japan
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Yamana T, Oya M, Komatsu J, Takase Y, Mikuni N, Ishikawa H. Preoperative anal sphincter high pressure zone, maximum tolerable volume, and anal mucosal electrosensitivity predict early postoperative defecatory function after low anterior resection for rectal cancer. Dis Colon Rectum 1999; 42:1145-51. [PMID: 10496554 DOI: 10.1007/bf02238566] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE The aims of this study were to correlate postoperative defecatory function after low anterior resection with clinical factors and physiologic parameters and to explore the possibility of predicting early postoperative defecatory function after low anterior resection. METHODS Thirty-two patients who underwent low anterior resection for rectal cancer were studied. Anorectal physiologic studies were performed preoperatively and six months postoperatively; maximum resting pressure, maximum squeeze pressure, length of the high pressure zone, neorectal sensory threshold, neorectal maximum tolerable volume, and anal mucosal electrosensitivity were recorded. Preoperative and postoperative defecatory function was scored between 0 (worst) and 6 (best) on the basis of bowel frequency, fecal incontinence, and urgency. RESULTS In univariate regression analyses, a longer preoperative high pressure zone and a more sensitive anal mucosa were associated with better postoperative defecatory function. Using multiple regression analysis, in which age, gender, the level of anastomosis, and preoperative physiologic parameters were examined as independent variables, a longer preoperative high pressure zone, a larger preoperative maximum tolerable volume, and lower sensory threshold of the anal canal were associated with better postoperative defecatory function. Postoperative function score was found to be predictable using the following formula: 1.47 + 0.496 x high pressure zone (cm) + 0.007 x maximum tolerable volume (ml) - 0.247 x sensory threshold (mA) of the anal canal. CONCLUSION Early postoperative defecatory function after low anterior resection is predictable from preoperative high pressure zone, maximum tolerable volume, and anal mucosal electrosensitivity.
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Affiliation(s)
- T Yamana
- Department of Surgery, Koshigaya Hospital, Dokkyo University School of Medicine, Saitama, Japan
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Komatsu J, Oya M, Ishikawa H. Clinical and Physiological Factors Affecting Postoperative Anal Dysfunction After Low Anterior Resection for Rectal Cancer. ACTA ACUST UNITED AC 1996. [DOI: 10.3862/jcoloproctology.49.273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Komatsu J, Oya M, Ishikawa H. Quantitative assessment of anal canal sensation in patients undergoing low anterior resection for rectal cancer. Surg Today 1995; 25:867-73. [PMID: 8574052 DOI: 10.1007/bf00311751] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
To determine the influence of anal canal sensation on anal function after low anterior resection (LAR) for rectal cancer, anal canal sensation was quantitatively evaluated before and after LAR by measuring anal mucosal electrosensitivity (AMES), and the relationship between AMES and postoperative and function was explored. Sensory thresholds 1, 2, and 3 cm from the anal margin were recorded in 21 patients who underwent LAR for rectal cancer (LAR-I) before, then 1 and 4 months after their operation. Another 14 patients who had been followed up for more than 1 year (LAR-II) after LAR and 21 control subjects were also studied. The median preoperative sensory thresholds in the LAR-I group were higher than those in the controls, though the differences were not significant. The sensory thresholds in the LAR-I group 4 months after LAR were lower than those preoperatively, but they did not significantly differ from those in the LAR-II and control groups. Although the postoperative sensory thresholds did not correlate with postoperative anal function, the preoperative sensory thresholds were higher in patients who were experiencing episodes of fecal incontinence 4 months after their operation. These results suggests that the preoperative measurement of AMES is useful for identifying patients who are likely to have a poor quality of continence after LAR.
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Affiliation(s)
- J Komatsu
- Department of Surgery, Koshigaya Hospital, Dokkyo University School of Medicine, Saitama, Japan
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Komatsu J, Sunfeld RH, de Castro MA, Quintella LP. [Sensitivity of the tooth cervix. A new therapeutic alternative]. RGO 1990; 38:173-6. [PMID: 2218042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The cervical hypersensitivity tooth was analysed and treated by application of a varnish with high fluoride ions content (Duraphat) and of a glass ionomer cement usually indicated to cavity lining (XR-ionomer-Kerr). This technique was applied in sixty-seven teeth of Clinic Graduation patients (Faculdade de Odontologia de Araçatuba) and demonstrated a high index of satisfactory results. The clinical findings of this study relate that, this technique is more one method of choose by clinicians.
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Russo M, Komatsu J, Takayama S, Holland Júnior C, Sundfeld RH, Mestrener SR, de Castro MA, Quintella LP. [Silver diamine fluoride. Pulp response to application of a 10% solution to dentin]. RGO 1987; 35:264-6. [PMID: 3484047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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Komatsu J, Russo M, Takayama S, Holland Junior C, Sasaki T, Quintella PA. [Influence of contamination of dental enamel decalcified by acid, on retention of composite resin restoration]. Rev Assoc Paul Cir Dent 1980; 34:476-9. [PMID: 7010464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Komatsu J, Russo M. [Esthetic restoration of anterior teeth without conventional cavity preparation. Clinical study]. Rev Assoc Paul Cir Dent 1979; 33:386-92. [PMID: 294620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Komatsu J, Russo M, Takayama S, Holland Júnior C, Sasaki T. [Clinical, radiographic and microscopic study of cavity depth in teeth with carious lesions]. Rev Assoc Paul Cir Dent 1978; 32:57-60. [PMID: 392634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Holland R, Takayama S, Komatsu J, Russo M, Sakaki T, Holland C. Pulpal response to high speed cavity preparation using water or air spray as coolants. J Nihon Univ Sch Dent 1972; 14:16-21. [PMID: 4556724 DOI: 10.2334/josnusd1959.14.16] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Komatsu J. [Influence of depth of the cavity preparation on the marginal infiltration of radioisotope (NaI-131) in dental restoration with silicate cement, zinc phosphate cement and chemically activated acrylic resin]. Rev Bras Odontol 1971; 28:213-20. [PMID: 5292082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Komatsu J. [Influence of the depth of the cavity preparation on the marginal infiltration of radioisotope (131 INA) in dental restorations with silicate cement, zinc phosphate cement and chemically activated acrylic resin]. Rev Bras Odontol 1971; 28:213-20. [PMID: 5293679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
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Russo M, Takayama S, Komatsu J, Sasaki T. [Marginal infiltration of the radioisotope (131-INa) in silicate cement restorations under different forces during setting time]. Arq Cent Estud Fac Odontol UFMG (Belo Horiz) 1971; 8:31-9. [PMID: 5290412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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