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Shimizu T, Matsumoto H, Hatano K, Hashida H. Cerebral Venous Thrombosis in a Neuromyelitis Optica Patient. Intern Med 2024; 63:1331-1332. [PMID: 37779060 DOI: 10.2169/internalmedicine.2548-23] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/03/2023] Open
Affiliation(s)
- Takahiro Shimizu
- Department of Neurology, Japanese Red Cross Medical Center, Japan
| | | | - Keiko Hatano
- Department of Neurology, Japanese Red Cross Medical Center, Japan
| | - Hideji Hashida
- Department of Neurology, Japanese Red Cross Medical Center, Japan
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Kaburagi K, Hagiwara Y, Tachikawa K, Miyake N, Akiyama H, Kawai Y, Omae Y, Tokunaga K, Yamano Y, Shimizu T, Mitsuhashi S. A novel NODAL variant in a young embolic stroke patient with visceral heterotaxy. BMC Neurol 2024; 24:119. [PMID: 38605286 PMCID: PMC11007883 DOI: 10.1186/s12883-024-03619-x] [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: 04/22/2023] [Accepted: 04/02/2024] [Indexed: 04/13/2024] Open
Abstract
BACKGROUND Ischemic stroke in young adults can be caused by a variety of etiologies including the monogenic disorders. Visceral heterotaxy is a condition caused by abnormal left-right determinations during embryonic development. We aimed to determine the cause of a young ischemic stroke patient with visceral heterotaxy. CASE PRESENTATION We performed neurological, radiological, and genetic evaluations in a 17-year-old male patient presenting ischemic stroke and visceral heterotaxy to determine the underlying cause of this rare disease combination. Brain magnetic resonance imaging (MRI) showed evidence of embolic stroke, abdominal computed tomography (CT) showed visceral heterotaxy, and echocardiogram showed cardiac anomaly with right-to-left-shunt (RLS). Whole genome sequencing (WGS) revealed a heterozygous missense variant (NM_018055.5: c.1016 T > C, p.(Met339Val)) in the NODAL gene, which is essential to the determination of the left-right body axis. CONCLUSIONS Our study highlights the importance of evaluating genetic etiology in young ischemic stroke and the need for stroke risk management in visceral heterotaxy patients with RLS. To the best of our knowledge, we report the first genetically-confirmed case of visceral heterotaxy with young embolic stroke reported to date.
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Affiliation(s)
- Kei Kaburagi
- Department of Neurology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 2168511, Japan
| | - Yuta Hagiwara
- Department of Neurology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 2168511, Japan
| | - Keiji Tachikawa
- Department of Neurology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 2168511, Japan
| | - Noriko Miyake
- Department of Human Genetics, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan
| | - Hisanao Akiyama
- Department of Neurology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 2168511, Japan
| | - Yosuke Kawai
- Genome Medical Science Project, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yosuke Omae
- Genome Medical Science Project, National Center for Global Health and Medicine, Tokyo, Japan
| | - Katsushi Tokunaga
- Genome Medical Science Project, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yoshihisa Yamano
- Department of Neurology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 2168511, Japan
- Department of Rare Diseases Research, Institute of Medical Science, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Takahiro Shimizu
- Department of Neurology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 2168511, Japan.
| | - Satomi Mitsuhashi
- Department of Neurology, St. Marianna University School of Medicine, 2-16-1 Sugao, Miyamae-ku, Kawasaki, Kanagawa, 2168511, Japan.
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Katoh M, Fujii T, Tabuchi Y, Shimizu T, Sakai H. Negative regulation of thyroid adenoma-associated protein (THADA) in the cardiac glycoside-induced anti-cancer effect. J Physiol Sci 2024; 74:23. [PMID: 38561668 PMCID: PMC10985892 DOI: 10.1186/s12576-024-00914-7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 03/06/2024] [Indexed: 04/04/2024]
Abstract
Cardiac glycosides, known as inhibitors of Na+,K+-ATPase, have anti-cancer effects such as suppression of cancer cell proliferation and induction of cancer cell death. Here, we examined the signaling pathway elicited by cardiac glycosides in the human hepatocellular carcinoma HepG2 cells and human epidermoid carcinoma KB cells. Three kinds of cardiac glycosides (ouabain, oleandrin, and digoxin) inhibited the cancer cell proliferation and decreased the expression level of thyroid adenoma-associated protein (THADA). Interestingly, the knockdown of THADA inhibited cancer cell proliferation, and the proliferation was significantly rescued by re-expression of THADA in the THADA-knockdown cells. In addition, the THADA-knockdown markedly decreased the expression level of L-type amino acid transporter LAT1. Cardiac glycosides also reduced the LAT1 expression. The LAT1 inhibitor, JPH203, significantly weakened the cancer cell proliferation. These results suggest that the binding of cardiac glycosides to Na+,K+-ATPase negatively regulates the THADA-LAT1 pathway, exerting the anti-proliferative effect in cancer cells.
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Affiliation(s)
- Mizuki Katoh
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Takuto Fujii
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama, 930-0194, Japan
| | - Takahiro Shimizu
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Hideki Sakai
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
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Agatsuma N, Utsumi T, Nishikawa Y, Horimatsu T, Seta T, Yamashita Y, Tanaka Y, Inoue T, Nakanishi Y, Shimizu T, Ohno M, Fukushima A, Nakayama T, Seno H. Stage at diagnosis of colorectal cancer through diagnostic route: Who should be screened? World J Gastroenterol 2024; 30:1368-1376. [PMID: 38596494 PMCID: PMC11000077 DOI: 10.3748/wjg.v30.i10.1368] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 01/17/2024] [Accepted: 02/20/2024] [Indexed: 03/14/2024] Open
Abstract
BACKGROUND Colorectal cancer (CRC) is a global health concern, with advanced-stage diagnoses contributing to poor prognoses. The efficacy of CRC screening has been well-established; nevertheless, a significant proportion of patients remain unscreened, with > 70% of cases diagnosed outside screening. Although identifying specific subgroups for whom CRC screening should be particularly recommended is crucial owing to limited resources, the association between the diagnostic routes and identification of these subgroups has been less appreciated. In the Japanese cancer registry, the diagnostic routes for groups discovered outside of screening are primarily categorized into those with comorbidities found during hospital visits and those with CRC-related symptoms. AIM To clarify the stage at CRC diagnosis based on diagnostic routes. METHODS We conducted a retrospective observational study using a cancer registry of patients with CRC between January 2016 and December 2019 at two hospitals. The diagnostic routes were primarily classified into three groups: Cancer screening, follow-up, and symptomatic. The early-stage was defined as Stages 0 or I. Multivariate and univariate logistic regressions were exploited to determine the odds of early-stage diagnosis in the symptomatic and cancer screening groups, referencing the follow-up group. The adjusted covariates were age, sex, and tumor location. RESULTS Of the 2083 patients, 715 (34.4%), 1064 (51.1%), and 304 (14.6%) belonged to the follow-up, symptomatic, and cancer screening groups, respectively. Among the 2083 patients, CRCs diagnosed at an early stage were 57.3% (410 of 715), 23.9% (254 of 1064), and 59.5% (181 of 304) in the follow-up, symptomatic, and cancer screening groups, respectively. The symptomatic group exhibited a lower likelihood of early-stage diagnosis than the follow-up group [P < 0.001, adjusted odds ratio (aOR), 0.23; 95% confidence interval (95%CI): 0.19-0.29]. The likelihood of diagnosis at an early stage was similar between the follow-up and cancer screening groups (P = 0.493, aOR for early-stage diagnosis in the cancer screening group vs follow-up group = 1.11; 95%CI = 0.82-1.49). CONCLUSION CRCs detected during hospital visits for comorbidities were diagnosed earlier, similar to cancer screening. CRC screening should be recommended, particularly for patients without periodical hospital visits for comorbidities.
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Affiliation(s)
- Nobukazu Agatsuma
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
- Department of Gastroenterology and Hepatology, Japanese Red Cross Wakayama Medical Center, Wakayama 640-8558, Japan
| | - Takahiro Utsumi
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Yoshitaka Nishikawa
- Department of Health Informatics, Kyoto University School of Public Health, Kyoto 606-8501, Japan
| | - Takahiro Horimatsu
- Institute for Advancement of Clinical and Translational Science (iACT), Kyoto University Hospital, Kyoto 606-8507, Japan
| | - Takeshi Seta
- Department of Gastroenterology and Hepatology, Japanese Red Cross Wakayama Medical Center, Wakayama 640-8558, Japan
| | - Yukitaka Yamashita
- Department of Gastroenterology and Hepatology, Japanese Red Cross Wakayama Medical Center, Wakayama 640-8558, Japan
| | - Yukari Tanaka
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Takahiro Inoue
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Yuki Nakanishi
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Takahiro Shimizu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
| | - Mikako Ohno
- Medical Support Section, Medical Affairs Division, Kyoto University Hospital, Kyoto 606-8507, Japan
| | - Akane Fukushima
- Medical Support Section, Medical Affairs Division, Kyoto University Hospital, Kyoto 606-8507, Japan
| | - Takeo Nakayama
- Department of Health Informatics, Kyoto University School of Public Health, Kyoto 606-8501, Japan
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto 606-8507, Japan
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Michitsuji T, Fukui S, Morimoto S, Endo Y, Nishino A, Nishihata S, Tsuji Y, Shimizu T, Umeda M, Sumiyoshi R, Koga T, Iwamoto N, Origuchi T, Ueki Y, Yoshitama T, Eiraku N, Matsuoka N, Okada A, Fujikawa K, Ohtsubo H, Takaoka H, Hamada H, Tsuru T, Nawata M, Arinobu Y, Hidaka T, Tada Y, Kawakami A, Kawashiri SY. Clinical and ultrasound features of difficult-to-treat rheumatoid arthritis: A multicenter RA ultrasound cohort study. Scand J Rheumatol 2024; 53:123-129. [PMID: 38085537 DOI: 10.1080/03009742.2023.2277542] [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] [Received: 06/16/2023] [Accepted: 10/27/2023] [Indexed: 02/27/2024]
Abstract
OBJECTIVE The optimal strategy for difficult-to-treat (D2T) rheumatoid arthritis (RA) has not been identified, and the ultrasound characteristics of D2T RA have not been reported. We investigated the clinical characteristics and factors contributing to the outcome in D2T RA in a multicentre RA ultrasound observational cohort. METHOD We reviewed 307 Japanese patients diagnosed with RA who underwent treatment with biological and targeted synthetic disease-modifying anti-rheumatic drugs (b/tsDMARDs). We compared the differences in patient characteristics between the D2T RA and non-D2T RA groups. We examined the factors contributing to a good response [defined as b/tsDMARD continuation and Clinical Disease Activity Index (CDAI) ≤ 10 at 12 months] in the D2T RA patient group. RESULTS Forty-three patients (14%) were categorized as D2T RA and the remaining 264 (86%) as non-D2T RA at baseline. The grey-scale (GS) score, disease duration, and CDAI at the initiation of treatment were significantly higher in the D2T RA group than in the non-D2T RA group. In contrast, the power Doppler (PD) score was not significantly different between the two groups. Of the 43 D2T RA patients, 20 achieved a good response. The introduction of CTLA4-Ig (n = 5) was significantly associated with a good response in analysis based on inverse probability weighting with propensity score. GS and PD scores at baseline were not significantly associated with therapeutic response at 12 months in D2T RA patients. CONCLUSIONS Patients with D2T RA had high clinical and ultrasound activity and poor responses to treatment with b/tsDMARDs. CTLA4-Ig was associated with a good response at 12 months in D2T RA patients.
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Affiliation(s)
- T Michitsuji
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Fukui
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S Morimoto
- Innovation Platform & Office for Precision Medicine, Graduate School of Biomedical Sciences, Nagasaki University, Nagasaki, Japan
| | - Y Endo
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - A Nishino
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - S Nishihata
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Tsuji
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - T Shimizu
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - M Umeda
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - R Sumiyoshi
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - T Koga
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - N Iwamoto
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - T Origuchi
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - Y Ueki
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - T Yoshitama
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - N Eiraku
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - N Matsuoka
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - A Okada
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - K Fujikawa
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - H Ohtsubo
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - H Takaoka
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - H Hamada
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - T Tsuru
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - M Nawata
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - Y Arinobu
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - T Hidaka
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - Y Tada
- Kyushu Multicenter Rheumatoid Arthritis Ultrasound Prospective Observational Cohort Study Group, Kyushu, Japan
| | - A Kawakami
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - S-Y Kawashiri
- Department of Immunology and Rheumatology, Division of Advanced Preventive Medical Sciences, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
- Center for Collaborative Medical Education and Development, Nagasaki University Institute of Biomedical Sciences, Nagasaki, Japan
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Shimizu T, Nagashima Y, Matsukawa T, Mitsutake A, Kawai M, Horiuchi Y, Yokoyama K, Takaoka K, Kurihara Y, Toyama K, Sakuishi K, Kurokawa M, Toda T. Rare Co-occurrence of Spinal Cord Hemorrhage from Radiation-induced Cavernous Hemangioma and Classical Hodgkin Lymphoma Post-transplant Lymphoproliferative Disorder. Intern Med 2024:2898-23. [PMID: 38403773 DOI: 10.2169/internalmedicine.2898-23] [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] [Indexed: 02/27/2024] Open
Abstract
Post-transplant lymphoproliferative disorders (PTLDs) are lymphoproliferative diseases that occur after solid organ transplantation or hematopoietic stem cell transplantation (HSCT). The development of PTLD is often associated with reactivation of Epstein-Barr virus (EBV). A 26-year-old woman with a history of HSCT and total-body irradiation developed spinal cord hemorrhage from a radiation-induced cavernous hemangioma (RICH) shortly after the development of classical Hodgkin lymphoma PTLD with EBV reactivation. Although little is known about the factors leading to hemorrhagic events from spinal cord RICH, we suspect that EBV reactivation may have been a factor contributing to the hemorrhage in the present case.
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Affiliation(s)
- Takahiro Shimizu
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Yu Nagashima
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
- Department of Biomedical Photonics & Engineering, Hamamatsu University School of Medicine, Japan
| | - Takashi Matsukawa
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Akihiko Mitsutake
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Mizuho Kawai
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Yurino Horiuchi
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Keishi Yokoyama
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Kensuke Takaoka
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Yuya Kurihara
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Kazuhiro Toyama
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, Japan
| | - Kaori Sakuishi
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
- Department of Neurology, Teikyo University Chiba Medical Center, Japan
| | - Mineo Kurokawa
- Department of Hematology and Oncology, Graduate School of Medicine, The University of Tokyo, Japan
- Department of Cell Therapy and Transplantation Medicine, The University of Tokyo Hospital, Japan
| | - Tatsushi Toda
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Japan
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7
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Tokushige SI, Matsuda S, Tada M, Yabe I, Takeda A, Tanaka H, Hatakenaka M, Enomoto H, Kobayashi S, Shimizu K, Shimizu T, Kotsuki N, Inomata-Terada S, Furubayashi T, Ichikawa Y, Hanajima R, Tsuji S, Ugawa Y, Terao Y. Roles of the cerebellum and basal ganglia in temporal integration: Insights from a synchronized tapping task. Clin Neurophysiol 2024; 158:1-15. [PMID: 38113692 DOI: 10.1016/j.clinph.2023.11.018] [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: 01/11/2023] [Revised: 10/07/2023] [Accepted: 11/25/2023] [Indexed: 12/21/2023]
Abstract
OBJECTIVE The aim of this study was to clarify the roles of the cerebellum and basal ganglia for temporal integration. METHODS We studied 39 patients with spinocerebellar degeneration (SCD), comprising spinocerebellar atrophy 6 (SCA6), SCA31, Machado-Joseph disease (MJD, also called SCA3), and multiple system atrophy (MSA). Thirteen normal subjects participated as controls. Participants were instructed to tap on a button in synchrony with isochronous tones. We analyzed the inter-tap interval (ITI), synchronizing tapping error (STE), negative asynchrony, and proportion of delayed tapping as indicators of tapping performance. RESULTS The ITI coefficient of variation was increased only in MSA patients. The standard variation of STE was larger in SCD patients than in normal subjects, especially for MSA. Negative asynchrony, which is a tendency to tap the button before the tones, was prominent in SCA6 and MSA patients, with possible basal ganglia involvement. SCA31 patients exhibited normal to supranormal performance in terms of the variability of STE, which was surprising. CONCLUSIONS Cerebellar patients generally showed greater STE variability, except for SCA31. The pace of tapping was affected in patients with possible basal ganglia pathology. SIGNIFICANCE Our results suggest that interaction between the cerebellum and the basal ganglia is essential for temporal processing. The cerebellum and basal ganglia and their interaction regulate synchronized tapping, resulting in distinct tapping pattern abnormalities among different SCD subtypes.
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Affiliation(s)
- Shin-Ichi Tokushige
- Department of Neurology, Graduate School of Medicine, the University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Department of Neurology, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka-shi, Tokyo 181-8611, Japan
| | - Shunichi Matsuda
- Department of Neurology, Graduate School of Medicine, the University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan
| | - Masayoshi Tada
- Department of Neurology, Brain Research Institute, Niigata University, 1-757 Asahimachidori, Chuo-ku, Niigata 951-8585, Japan
| | - Ichiro Yabe
- Department of Neurology, Faculty of Medicine and Graduate School of Medicine, Hokkaido University, Kita 15, Nishi 7, Kita-ku, Sapporo 060-8638, Japan
| | - Atsushi Takeda
- Department of Neurology, Sendai Nishitaga Hospital, 2-11-11, Kagitori-honcho, Taihaku-ku, Sendai 982-8555, Japan
| | - Hiroyasu Tanaka
- Department of Neurology, Sendai Nishitaga Hospital, 2-11-11, Kagitori-honcho, Taihaku-ku, Sendai 982-8555, Japan
| | - Megumi Hatakenaka
- Department of Neurology, Morinomiya Hospital, 2-1-88, Morinomiya, Joto-ku, Osaka 536-0025, Japan
| | - Hiroyuki Enomoto
- Department of Neurology, Faculty of Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Shunsuke Kobayashi
- Department of Neurology, Teikyo University School of Medicine, 2-11-1 Kaga, Itabashi-Ku, Tokyo 173-8606, Japan
| | - Kazutaka Shimizu
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, 36-1, Nishicho, Yonago, Tottori 683-8504, Japan
| | - Takahiro Shimizu
- Department of Neurology, Kitasato University School of Medicine, 1-15-1, Kitazato, Minami, Sagamihara, Kanagawa 252-0375, Japan
| | - Naoki Kotsuki
- Department of Neurology, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka-shi, Tokyo 181-8611, Japan
| | - Satomi Inomata-Terada
- Department of Medical Physiology, School of Medicine, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo 181-8611, Japan
| | - Toshiaki Furubayashi
- Graduate School of Health and Environment Science, Tohoku Bunka Gakuen University, 6-45-1 Kunimi, Sendai, Miyagi 981-8551, Japan
| | - Yaeko Ichikawa
- Department of Neurology, Faculty of Medicine, Kyorin University, 6-20-2 Shinkawa, Mitaka-shi, Tokyo 181-8611, Japan
| | - Ritsuko Hanajima
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, 36-1, Nishicho, Yonago, Tottori 683-8504, Japan
| | - Shoji Tsuji
- Department of Molecular Neurology, the University of Tokyo and International University of Health and Welfare, 4-3, Kozunomori, Narita-shi, Chiba-ken 286-8686, Japan
| | - Yoshikazu Ugawa
- Department of Human Neurophysiology, Fukushima Medical University, 1 Hikarigaoka, Fukushima 960-1295, Japan
| | - Yasuo Terao
- Department of Neurology, Graduate School of Medicine, the University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan; Department of Medical Physiology, School of Medicine, Kyorin University, 6-20-2, Shinkawa, Mitaka, Tokyo 181-8611, Japan.
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8
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Tachikawa K, Shimizu T, Imai T, Ko R, Kawai Y, Omae Y, Tokunaga K, Frith MC, Yamano Y, Mitsuhashi S. Cost-Effective Cas9-Mediated Targeted Sequencing of Spinocerebellar Ataxia Repeat Expansions. J Mol Diagn 2024; 26:85-95. [PMID: 38008286 DOI: 10.1016/j.jmoldx.2023.10.004] [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] [Received: 06/26/2023] [Revised: 10/09/2023] [Accepted: 10/23/2023] [Indexed: 11/28/2023] Open
Abstract
Hereditary repeat diseases are caused by an abnormal expansion of short tandem repeats in the genome. Among them, spinocerebellar ataxia (SCA) is a heterogeneous disease, and currently, 16 responsible repeats are known. Genetic diagnosis is obtained by analyzing the number of repeats through separate testing of each repeat. Although simultaneous detection of candidate repeats using current massively parallel sequencing technologies has been developed to avoid complicated multiple experiments, these methods are generally expensive. This study developed a cost-effective SCA repeat panel [Flongle SCA repeat panel sequencing (FLO-SCAp)] using Cas9-mediated targeted long-read sequencing and the smallest long-read sequencing apparatus, Flongle. This panel enabled the detection of repeat copy number changes, internal repeat sequences, and DNA methylation in seven patients with different repeat expansion diseases. The median (interquartile range) values of coverage and on-target rate were 39.5 (12 to 72) and 11.6% (7.5% to 16.5%), respectively. This approach was validated by comparing repeat copy number changes measured by FLO-SCAp and short-read whole-genome sequencing. A high correlation was observed between FLO-SCAp and short-read whole-genome sequencing when the repeat length was ≤250 bp (r = 0.98; P < 0.001). Thus, FLO-SCAp represents the most cost-effective method for conducting multiplex testing of repeats and can serve as the first-line diagnostic tool for SCA.
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Affiliation(s)
- Keiji Tachikawa
- Department of Neurology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Takahiro Shimizu
- Department of Neurology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Takeshi Imai
- Department of Neurology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Riyoko Ko
- Department of Neurology, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Yosuke Kawai
- Genome Medical Science Project, National Center for Global Health and Medicine, Tokyo, Japan
| | - Yosuke Omae
- Genome Medical Science Project, National Center for Global Health and Medicine, Tokyo, Japan
| | - Katsushi Tokunaga
- Genome Medical Science Project, National Center for Global Health and Medicine, Tokyo, Japan
| | - Martin C Frith
- Artificial Intelligence Research Center, National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan; Graduate School of Frontier Sciences, University of Tokyo, Kashiwa, Japan; Computational Bio Big-Data Open Innovation Laboratory, National Institute of Advanced Industrial Science and Technology (AIST), Tokyo, Japan
| | - Yoshihisa Yamano
- Department of Neurology, St. Marianna University School of Medicine, Kawasaki, Japan; Department of Rare Diseases Research, Institute of Medical Science, St. Marianna University School of Medicine, Kawasaki, Japan
| | - Satomi Mitsuhashi
- Department of Neurology, St. Marianna University School of Medicine, Kawasaki, Japan.
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9
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Inoue T, Katada C, Shimizu T, Nikaido M, Higuchi H, Kishimoto Y, Muto M. Endoscopic resection combined with gel immersion and curved laryngoscope for superficial hypopharyngeal cancer. Endoscopy 2023; 55:E831-E832. [PMID: 37348547 PMCID: PMC10287509 DOI: 10.1055/a-2099-4084] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/24/2023]
Affiliation(s)
- Takahiro Inoue
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Chikatoshi Katada
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takahiro Shimizu
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mitsuhiro Nikaido
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hirokazu Higuchi
- Department of Medical Equipment, Kyoto University Hospital, Kyoto, Japan
| | - Yo Kishimoto
- Department of Otolaryngology-Head and Neck Surgery, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Manabu Muto
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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10
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Honda M, Shimizu T, Moriyasu S, Murakami T, Takigawa H, Ugawa Y, Hanajima R. Impaired long-term potentiation-like motor cortical plasticity in progressive supranuclear palsy. Clin Neurophysiol 2023; 155:99-106. [PMID: 37596134 DOI: 10.1016/j.clinph.2023.07.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2022] [Revised: 06/09/2023] [Accepted: 07/20/2023] [Indexed: 08/20/2023]
Abstract
OBJECTIVE To elucidate long-term potentiation (LTP)-like effects on the primary motor cortical (M1) in progressive supranuclear palsy (PSP) and its relationships with clinical features. METHODS Participants were 18 probable/possible PSP Richardson syndrome (PSP-RS) patients and 17 healthy controls (HC). We used quadripulse stimulation (QPS) over the M1 with an interstimulus interval of 5 ms (QPS-5) to induce LTP-like effect and analyzed the correlations between the degree of LTP-like effect and clinical features. We also evaluated cortical excitability using short interval intracortical inhibition (SICI), intracortical facilitation (ICF) and short interval intracortical facilitation (SICF) in 15 PSP patients and 17 HC. RESULTS LTP-like effect after QPS in PSP was smaller than HC and negatively correlated with Unified Parkinson's Disease Rating Scale Part III (UPDRS-III) score, especially bradykinesia, but not with either age or any scores of cognitive functions. The SICI was abnormally reduced in PSP, but neither ICF nor SICF differed from those of normal subjects. None of these cortical excitability parameters correlated with any clinical features. CONCLUSIONS LTP induction was impaired in PSP. The degree of LTP could reflect the severity of bradykinesia. The bradykinesia may partly relate with the motor cortical dysfunction. SIGNIFICANCE The degree of motor cortical LTP could relate with the severity of motor symptoms in PSP.
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Affiliation(s)
- Makoto Honda
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan
| | - Takahiro Shimizu
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan
| | - Shotaro Moriyasu
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan
| | - Takenobu Murakami
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan
| | - Hiroshi Takigawa
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan
| | - Yoshikazu Ugawa
- Department of Human Neurophysiology, School of Medicine, Fukushima Medical University, Fukushima, Japan
| | - Ritsuko Hanajima
- Division of Neurology, Department of Brain and Neurosciences, Faculty of Medicine, Tottori University, Yonago, Tottori, Japan.
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11
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Nikaido M, Takimoto T, Sakurai T, Hoki M, Minamiguchi S, Nakajima T, Torishima M, Nishigori T, Obama K, Koyama Y, Chiba T, Ushiama M, Gotoh M, Teramura M, Takeda H, Shimizu T, Seno H. Gastric juvenile polyposis syndrome with inflammatory changes in the intervening mucosa. Pathol Int 2023; 73:566-569. [PMID: 37559445 DOI: 10.1111/pin.13374] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/02/2023] [Accepted: 08/05/2023] [Indexed: 08/11/2023]
Affiliation(s)
- Mitsuhiro Nikaido
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Takafumi Takimoto
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Takaki Sakurai
- Department of Pathology, Kansai Electric Power Hospital, Fukushima-ku, Osaka, Japan
- Department of Diagnostic Pathology, Osaka Red Cross Hospital, Tennoji-ku, Osaka, Japan
| | - Masahito Hoki
- Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Sachiko Minamiguchi
- Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Takeshi Nakajima
- Department of Medical Ethics and Medical Genetics, Kyoto University School of Public Health, Kyoto, Japan
- Department of Clinical Genetics Unit, Kyoto University Hospital, Sakyo-ku, Kyoto, Japan
| | - Masako Torishima
- Department of Medical Ethics and Medical Genetics, Kyoto University School of Public Health, Kyoto, Japan
- Department of Clinical Genetics Unit, Kyoto University Hospital, Sakyo-ku, Kyoto, Japan
| | - Tatsuto Nishigori
- Department of Surgery, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Kazutaka Obama
- Department of Surgery, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Yukari Koyama
- Department of Gastroenterology and Hepatology, Kansai Electric Power Hospital, Fukushima-ku, Osaka, Japan
| | - Tsutomu Chiba
- Department of Gastroenterology and Hepatology, Kansai Electric Power Hospital, Fukushima-ku, Osaka, Japan
| | - Mineko Ushiama
- Department of Genetic Medicine and Services, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Department of Clinical Genomics, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
| | - Masahiro Gotoh
- Department of Genetic Medicine and Services, National Cancer Center Hospital, Chuo-ku, Tokyo, Japan
- Department of Clinical Genomics, National Cancer Center Research Institute, Chuo-ku, Tokyo, Japan
| | - Mari Teramura
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Haruhiko Takeda
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Takahiro Shimizu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Sakyo-ku, Kyoto, Japan
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12
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Kanemaru K, Ueno Y, Kikuno M, Tateishi Y, Shimizu T, Kuriki A, Doijiri R, Takekawa H, Shimada Y, Yamaguchi E, Koga M, Kamiya Y, Ihara M, Tsujino A, Hirata K, Hasegawa Y, Aizawa H, Hattori N, Urabe T. High-risk patent foramen ovale and elderly in cryptogenic stroke. J Stroke Cerebrovasc Dis 2023; 32:107344. [PMID: 37722223 DOI: 10.1016/j.jstrokecerebrovasdis.2023.107344] [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] [Received: 03/12/2023] [Revised: 08/29/2023] [Accepted: 09/05/2023] [Indexed: 09/20/2023] Open
Abstract
BACKGROUND High-risk patent foramen ovale (PFO) could be pathological in cryptogenic stroke (CS), but its clinical characteristics have not been fully studied, especially in elderly patients. METHODS Patients with CS were enrolled in the CHALLENGE ESUS/CS registry, a multicenter registry of CS patients undergoing transesophageal echocardiography. Clinical characteristics were compared among three groups: high-risk PFO group, large shunt PFO (≥25 microbubbles) or PFO with atrial septal aneurysm (ASA); right-to-left shunt (RLS) group, RLS including PFO with <25 microbubbles or without ASA; and no-RLS group. RESULTS In total, 654 patients were analyzed: 91, 221, and 342 in the high-risk PFO, RLS, and no-RLS groups, respectively. In multinomial logistic regression analysis, the male sex (odds ratio [OR] 1.825 [1.067-3.122]) was independently associated with high-risk PFO, but hypertension (OR, 0.562 [0.327-0.967]), multiple infarctions (OR, 0.601 [0.435-0.830]), and other cardioaortic embologenic risks (OR, 0.514 [0.294-0.897]) were inversely associated with high-risk PFO compared with non-RLS. In 517 patients aged ≥60 years, multiple infarctions (OR, 0.549 [0.382-0.788]) and other cardioaortic embologenic risks (OR, 0.523 [0.286-0.959]) were inversely associated with high-risk PFO. CONCLUSIONS High-risk PFO had specific clinical characteristics and possible mechanistic associations, and this trend was consistent among CS patients aged ≥60 years. CLINICAL TRIAL REGISTRATION INFORMATION http://www.umin.ac.jp/ctr/ (UMIN000032957).
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Affiliation(s)
- Kodai Kanemaru
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan; Department of Neurology, Tokyo Medical University Hospital, Tokyo, Japan
| | - Yuji Ueno
- Department of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan.
| | - Muneaki Kikuno
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan; Department of Neurology, Tokyo Medical University Hospital, Tokyo, Japan
| | - Yohei Tateishi
- Department of Neurology and Strokology, Nagasaki University Hospital, Nagasaki, Japan
| | - Takahiro Shimizu
- Department of Neurology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Ayako Kuriki
- Department of Neurology, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Ryosuke Doijiri
- Department of Neurology, Iwate Prefectural Central Hospital, Iwate, Japan
| | | | - Yoshiaki Shimada
- Department of Neurology, Juntendo University Urayasu Hospital, Chiba, Japan
| | - Eriko Yamaguchi
- Department of Neurology, Iwate Prefectural Central Hospital, Iwate, Japan
| | - Masatoshi Koga
- Department of Cerebrovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Yuki Kamiya
- Department of Neurology, Showa University Koto Toyosu Hospital, Tokyo, Japan
| | - Masafumi Ihara
- Department of Neurology, National Cerebral and Cardiovascular Center, Osaka, Japan
| | - Akira Tsujino
- Department of Neurology and Strokology, Nagasaki University Hospital, Nagasaki, Japan
| | - Koichi Hirata
- Department of Neurology, Dokkyo Medical University, Tochigi, Japan
| | - Yasuhiro Hasegawa
- Department of Neurology, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Hitoshi Aizawa
- Department of Neurology, Tokyo Medical University Hospital, Tokyo, Japan
| | - Nobutaka Hattori
- Department of Neurology, Juntendo University Faculty of Medicine, Tokyo, Japan
| | - Takao Urabe
- Department of Neurology, Juntendo University Urayasu Hospital, Chiba, Japan
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13
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Shimizu T, Nayar SG, Swire M, Jiang Y, Grist M, Kaller M, Sampaio Baptista C, Bannerman DM, Johansen-Berg H, Ogasawara K, Tohyama K, Li H, Richardson WD. Oligodendrocyte dynamics dictate cognitive performance outcomes of working memory training in mice. Nat Commun 2023; 14:6499. [PMID: 37838794 PMCID: PMC10576739 DOI: 10.1038/s41467-023-42293-4] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 10/04/2023] [Indexed: 10/16/2023] Open
Abstract
Previous work has shown that motor skill learning stimulates and requires generation of myelinating oligodendrocytes (OLs) from their precursor cells (OLPs) in the brains of adult mice. In the present study we ask whether OL production is also required for non-motor learning and cognition, using T-maze and radial-arm-maze tasks that tax spatial working memory. We find that maze training stimulates OLP proliferation and OL production in the medial prefrontal cortex (mPFC), anterior corpus callosum (genu), dorsal thalamus and hippocampal formation of adult male mice; myelin sheath formation is also stimulated in the genu. Genetic blockade of OL differentiation and neo-myelination in Myrf conditional-knockout mice strongly impairs training-induced improvements in maze performance. We find a strong positive correlation between the performance of individual wild type mice and the scale of OLP proliferation and OL generation during training, but not with the number or intensity of c-Fos+ neurons in their mPFC, underscoring the important role played by OL lineage cells in cognitive processing.
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Affiliation(s)
- Takahiro Shimizu
- Wolfson Institute for Biomedical Research, University College London, Gower Street, London, WC1E 6BT, UK
| | - Stuart G Nayar
- Wolfson Institute for Biomedical Research, University College London, Gower Street, London, WC1E 6BT, UK
| | - Matthew Swire
- Wolfson Institute for Biomedical Research, University College London, Gower Street, London, WC1E 6BT, UK
| | - Yi Jiang
- Wolfson Institute for Biomedical Research, University College London, Gower Street, London, WC1E 6BT, UK
| | - Matthew Grist
- Wolfson Institute for Biomedical Research, University College London, Gower Street, London, WC1E 6BT, UK
| | - Malte Kaller
- Wellcome Centre for Integrative Neuroimaging, Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
| | - Cassandra Sampaio Baptista
- Wellcome Centre for Integrative Neuroimaging, Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
- Institute of Neuroscience and Psychology, University of Glasgow, 62 Hillhead Street, G12 8QB, Glasgow, UK
| | - David M Bannerman
- Department of Experimental Psychology, University of Oxford, Oxford, OX1 3TA, UK
| | - Heidi Johansen-Berg
- Wellcome Centre for Integrative Neuroimaging, Department of Clinical Neurosciences, John Radcliffe Hospital, University of Oxford, Oxford, OX3 9DU, UK
| | - Katsutoshi Ogasawara
- Technical Support Center for Life Science Research, Iwate Medical University, 1-1-1 Idaidori, Yahabacho, Shiwa-gun, Morioka, Iwate, 028-3694, Japan
| | - Koujiro Tohyama
- Department of Physiology, Iwate Medical University, 1-1-1 Idaidori, Yahabacho, Shiwa-gun, Morioka, Iwate, 028-3694, Japan
| | - Huiliang Li
- Wolfson Institute for Biomedical Research, University College London, Gower Street, London, WC1E 6BT, UK
| | - William D Richardson
- Wolfson Institute for Biomedical Research, University College London, Gower Street, London, WC1E 6BT, UK.
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14
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Kakimoto S, Harada Y, Shimizu T. Gastric syphilis. QJM 2023; 116:800-801. [PMID: 37202361 DOI: 10.1093/qjmed/hcad096] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Indexed: 05/20/2023] Open
Affiliation(s)
- S Kakimoto
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Kitakobayashi 880, Mibu, Tochigi 321-0293, Japan
| | - Y Harada
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Kitakobayashi 880, Mibu, Tochigi 321-0293, Japan
| | - T Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Kitakobayashi 880, Mibu, Tochigi 321-0293, Japan
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15
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Shimizu T, Tamura N, Nishimura T, Saito C, Yamamoto H, Mizushima N. Comprehensive analysis of autophagic functions of WIPI family proteins and their implications for the pathogenesis of β-propeller associated neurodegeneration. Hum Mol Genet 2023; 32:2623-2637. [PMID: 37364041 PMCID: PMC10407718 DOI: 10.1093/hmg/ddad096] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/15/2023] [Accepted: 06/13/2023] [Indexed: 06/28/2023] Open
Abstract
β-propellers that bind polyphosphoinositides (PROPPINs) are an autophagy-related protein family conserved throughout eukaryotes. The PROPPIN family includes Atg18, Atg21 and Hsv2 in yeast and WD-repeat protein interacting with phosphoinositides (WIPI)1-4 in mammals. Mutations in the WIPI genes are associated with human neuronal diseases, including β-propeller associated neurodegeneration (BPAN) caused by mutations in WDR45 (encoding WIPI4). In contrast to yeast PROPPINs, the functions of mammalian WIPI1-WIPI4 have not been systematically investigated. Although the involvement of WIPI2 in autophagy has been clearly shown, the functions of WIPI1, WIPI3 and WIPI4 in autophagy remain poorly understood. In this study, we comprehensively analyzed the roles of WIPI proteins by using WIPI-knockout (single, double and quadruple knockout) HEK293T cells and recently developed HaloTag-based reporters, which enable us to monitor autophagic flux sensitively and quantitatively. We found that WIPI2 was nearly essential for autophagy. Autophagic flux was unaffected or only slightly reduced by single deletion of WIPI3 (encoded by WDR45B) or WIPI4 but was profoundly reduced by double deletion of WIPI3 and WIPI4. Furthermore, we revealed variable effects of BPAN-related missense mutations on the autophagic activity of WIPI4. BPAN is characterized by neurodevelopmental and neurodegenerative abnormalities, and we found a possible association between the magnitude of the defect of the autophagic activity of WIPI4 mutants and the severity of neurodevelopmental symptoms. However, some of the BPAN-related missense mutations, which produce neurodegenerative signs, showed almost normal autophagic activity, suggesting that non-autophagic functions of WIPI4 may be related to neurodegeneration in BPAN.
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Affiliation(s)
- Takahiro Shimizu
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
- Department of Neurology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Norito Tamura
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Taki Nishimura
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
- PRESTO, Japan Science and Technology Agency, Tokyo 102-0076, Japan
| | - Chieko Saito
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Hayashi Yamamoto
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
- Department of Molecular Oncology, Nippon Medical School, Institute for Advanced Medical Sciences, Tokyo 113-8602, Japan
| | - Noboru Mizushima
- Department of Biochemistry and Molecular Biology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
- International Research Center for Neurointelligence (WPI-IRCN), UTIAS, The University of Tokyo, Tokyo 113-8655, Japan
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16
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Loong HH, Shimizu T, Prawira A, Tan AC, Tran B, Day D, Tan DSP, Ting FIL, Chiu JW, Hui M, Wilson MK, Prasongsook N, Koyama T, Reungwetwattana T, Tan TJ, Heong V, Voon PJ, Park S, Tan IB, Chan SL, Tan DSW. Recommendations for the use of next-generation sequencing in patients with metastatic cancer in the Asia-Pacific region: a report from the APODDC working group. ESMO Open 2023; 8:101586. [PMID: 37356359 PMCID: PMC10319859 DOI: 10.1016/j.esmoop.2023.101586] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [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: 12/10/2022] [Revised: 03/27/2023] [Accepted: 05/18/2023] [Indexed: 06/27/2023] Open
Abstract
INTRODUCTION Next-generation sequencing (NGS) diagnostics have shown clinical utility in predicting survival benefits in patients with certain cancer types who are undergoing targeted drug therapies. Currently, there are no guidelines or recommendations for the use of NGS in patients with metastatic cancer from an Asian perspective. In this article, we present the Asia-Pacific Oncology Drug Development Consortium (APODDC) recommendations for the clinical use of NGS in metastatic cancers. METHODS The APODDC set up a group of experts in the field of clinical cancer genomics to (i) understand the current NGS landscape for metastatic cancers in the Asia-Pacific (APAC) region; (ii) discuss key challenges in the adoption of NGS testing in clinical practice; and (iii) adapt/modify the European Society for Medical Oncology guidelines for local use. Nine cancer types [breast cancer (BC), gastric cancer (GC), nasopharyngeal cancer (NPC), ovarian cancer (OC), prostate cancer, lung cancer, and colorectal cancer (CRC) as well as cholangiocarcinoma and hepatocellular carcinoma (HCC)] were identified, and the applicability of NGS was evaluated in daily practice and/or clinical research. Asian ethnicity, accessibility of NGS testing, reimbursement, and socioeconomic and local practice characteristics were taken into consideration. RESULTS The APODDC recommends NGS testing in metastatic non-small-cell lung cancer (NSCLC). Routine NGS testing is not recommended in metastatic BC, GC, and NPC as well as cholangiocarcinoma and HCC. The group suggested that patients with epithelial OC may be offered germline and/or somatic genetic testing for BReast CAncer gene 1 (BRCA1), BRCA2, and other OC susceptibility genes. Access to poly (ADP-ribose) polymerase inhibitors is required for NGS to be of clinical utility in prostate cancer. Allele-specific PCR or a small-panel multiplex-gene NGS was suggested to identify key alterations in CRC. CONCLUSION This document offers practical guidance on the clinical utility of NGS in specific cancer indications from an Asian perspective.
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Affiliation(s)
- H H Loong
- Department of Clinical Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - T Shimizu
- Department of Pulmonary Medicine and Medical Oncology, Wakayama Medical University Graduate School of Medicine, Wakayama, Japan
| | - A Prawira
- Cancer Trials and Research Unit, Prince of Wales Hospital, Sydney, Australia
| | - A C Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - B Tran
- Department of Oncology, Peter MacCallum Cancer Centre, Melbourne
| | - D Day
- Department of Oncology, Monash Health and Monash University, Australia
| | - D S P Tan
- Department of Haematology-Oncology, National University Cancer Institute, Singapore
| | - F I L Ting
- Department of Medicine, Dr. Pablo O. Torre Memorial Hospital, Bacolod, Philippines
| | - J W Chiu
- Department of Medicine, The University of Hong Kong, HKSAR, Pok Fu Lam, Hong Kong, China
| | - M Hui
- Department of Medical Oncology, Chris O'Brien Lifehouse, Camperdown, Australia
| | - M K Wilson
- Department of Medical Oncology, Auckland City Hospital, Auckland, New Zealand
| | - N Prasongsook
- Division of Medical Oncology, Phramongkutklao Hospital, Bangkok, Thailand
| | - T Koyama
- Department of Experimental Therapeutics, National Cancer Center Hospital, Tokyo, Japan
| | - T Reungwetwattana
- Division of Medical Oncology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - T J Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - V Heong
- Department Medical Oncology, Tan Tock Seng Hospital, Singapore
| | - P J Voon
- Radiotherapy and Oncology Department, Hospital Umum Sarawak, Kuching, Malaysia
| | - S Park
- Division of Hematology-Oncology, Department of Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea
| | - I B Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore
| | - S L Chan
- Department of Clinical Oncology, The Chinese University of Hong Kong, Hong Kong, China
| | - D S W Tan
- Division of Medical Oncology, National Cancer Centre Singapore, Singapore.
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17
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Kakimoto S, Harada Y, Shimizu T. A thermal imaging camera at the work office trigged the diagnosis of Takayasu arteritis. QJM 2023; 116:542-543. [PMID: 36975608 DOI: 10.1093/qjmed/hcad049] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2023] [Accepted: 03/27/2023] [Indexed: 03/29/2023] Open
Affiliation(s)
- S Kakimoto
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Kitakobayashi 880, Mibu, Tochigi 321-0293, Japan
| | - Y Harada
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Kitakobayashi 880, Mibu, Tochigi 321-0293, Japan
| | - T Shimizu
- Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Kitakobayashi 880, Mibu, Tochigi 321-0293, Japan
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18
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Shimizu N, Shimizu T, Higashi Y, Zou S, Fukuhara H, Karashima T, Inoue K, Saito M. Possible involvement of brain hydrogen sulphide in the inhibition of the rat micturition reflex induced by activation of brain alpha7 nicotinic acetylcholine receptors. Eur J Pharmacol 2023:175839. [PMID: 37301318 DOI: 10.1016/j.ejphar.2023.175839] [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] [Received: 03/07/2023] [Revised: 05/24/2023] [Accepted: 06/08/2023] [Indexed: 06/12/2023]
Abstract
We previously reported that brain α7 nicotinic acetylcholine receptors inhibited the rat micturition reflex. To elucidate the mechanisms underlying this inhibition, we focused on the relationship between α7 nicotinic acetylcholine receptors and hydrogen sulphide (H2S) because we found that H2S also inhibits the rat micturition reflex in the brain. Therefore, we investigated whether H2S is involved in the inhibition of the micturition reflex induced by the activation of α7 nicotinic acetylcholine receptors in the brain. Cystometry was performed in male Wistar rats under urethane anesthesia (0.8 g/kg, ip) to examine the effects of icv pre-treated GYY4137 (H2S donor, 1 or 3 nmol/rat) or aminooxyacetic acid (AOAA; non-selective H2S synthesis inhibitor, 3 or 10 μg/rat) on PHA568487 (α7 nicotinic acetylcholine receptor agonist, icv)-induced prolongation of intercontraction intervals. PHA568487 administration at a lower dose (0.3 nmol/rat, icv) had no significant effect on intercontraction intervals, while under pre-treatment with GYY4137 (3 nmol/rat icv), PHA568487 (0.3 nmol/rat, icv) significantly prolonged intercontraction intervals. PHA568487 at a higher dose (1 nmol/rat, icv) induced intercontraction interval prolongation, and the PHA568487-induced prolongation was significantly suppressed by AOAA (10 μg/rat, icv). The AOAA-induced suppression of the PHA568487-induced intercontraction interval prolongation was negated by supplementing H2S via GYY4137 at a lower dose (1 nmol/rat, icv) in the brain. GYY4137 or AOAA alone showed no significant effect on intercontraction intervals at each dose used in this study. These findings suggest a possible involvement of brain H2S in inhibiting the rat micturition reflex induced by activation of brain alpha7 nicotinic acetylcholine receptors.
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Affiliation(s)
- Nobutaka Shimizu
- Pelvic Floor Center, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Takahiro Shimizu
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan.
| | - Youichirou Higashi
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Suo Zou
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Hideo Fukuhara
- Department of Urology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Takashi Karashima
- Department of Urology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Keiji Inoue
- Department of Urology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
| | - Motoaki Saito
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku, Kochi, 783-8505, Japan
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19
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Tasaka A, Sasaki H, Harada A, Ito K, Kobayashi H, Shimizu T, Yamashita S. Simultaneous prosthodontic treatment for crowns of natural teeth and dental implants using digital technology: A case report. Clin Case Rep 2023; 11:e7187. [PMID: 37207088 PMCID: PMC10188894 DOI: 10.1002/ccr3.7187] [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: 01/26/2023] [Revised: 03/15/2023] [Accepted: 03/22/2023] [Indexed: 05/21/2023] Open
Abstract
The aim of this clinical report was to describe the improvement of masticatory disorders with the use of digital technology to simultaneously perform prosthodontic treatment of natural teeth and edentulous areas. Computer-guided implant surgery was performed, and crown prostheses and implant superstructures were fabricated simultaneously using digital technology.
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Affiliation(s)
- Akinori Tasaka
- Department of Removable Partial ProsthodonticsTokyo Dental CollegeTokyoJapan
| | - Hodaka Sasaki
- Department of Oral and Maxillofacial ImplantologyTokyo Dental CollegeTokyoJapan
| | - Atsuro Harada
- Department of Oral and Maxillofacial ImplantologyTokyo Dental CollegeTokyoJapan
| | - Kosei Ito
- Department of Removable Partial ProsthodonticsTokyo Dental CollegeTokyoJapan
| | - Hiro Kobayashi
- Department of Removable Partial ProsthodonticsTokyo Dental CollegeTokyoJapan
| | - Takahiro Shimizu
- Department of Removable Partial ProsthodonticsTokyo Dental CollegeTokyoJapan
| | - Shuichiro Yamashita
- Department of Removable Partial ProsthodonticsTokyo Dental CollegeTokyoJapan
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20
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Tsuchiya N, Okamoto K, Nakao S, Ohmori S, Shimizu T. Effect of Blonanserin on the Proliferation and Migration of Glioblastoma Cells. Pharmazie 2023; 78:37-41. [PMID: 37189270 DOI: 10.1691/ph.2023.1821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Glioblastoma is a highly malignant and invasive brain tumor, and there is an urgent need to establish a treatment option that prevents its growth and metastasis. Blonanserin is an antipsychotic drug widely used in the treatment of schizophrenia. It has recently been reported to inhibit the growth of breast cancer cells. In this study, we investigated the effect of blonanserin on the proliferation and migration of glioblastoma cells. The anti-proliferative activity of blonanserin was evaluated in terms of cell viability, competition, and cell death pathways in glioblastoma. Cell viability studies showed that blonanserin had growth inhibitory ability regardless of the malignancy of glioblastoma cells, but at concentrations close to its IC50, it only had a slight cell death-inducing effect. Blonanserin showed growth inhibitory activity without D₂ antagonism following an independent competition analysis using blonanserin and D₂ antagonists. When the anti-migration activity of U251 cells was measured, blonanserin was found to attenuate cell migration. Furthermore, treatment with blonanserin at concentrations close to its IC50 value inhibited extensive filament actin formation. In conclusion, blonanserin inhibited the proliferation and migration of glioblastoma cells independent of D₂ antagonism. The present study shows that blonanserin may serve as a seed compound for the discovery of new glioblastoma therapeutics to prevent the growth and metastasis of glioblastoma.
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Affiliation(s)
- N Tsuchiya
- School of Pharmacy, Hyogo Medical University, Kobe, Japan
| | - K Okamoto
- School of Pharmacy, Hyogo Medical University, Kobe, Japan
| | - S Nakao
- School of Pharmacy, Hyogo Medical University, Kobe, Japan
| | - S Ohmori
- School of Pharmacy, Hyogo Medical University, Kobe, Japan
| | - T Shimizu
- School of Pharmacy, Hyogo Medical University, Kobe, Japan;,
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21
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Suzuki T, Shimizu T, Karnup S, Shimizu N, Ni J, de Groat WC, Yoshimura N. Therapeutic effects of p38 mitogen-activated protein kinase inhibition on hyperexcitability of capsaicin sensitive bladder afferent neurons in mice with spinal cord injury. Life Sci 2023; 325:121738. [PMID: 37121541 DOI: 10.1016/j.lfs.2023.121738] [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] [Received: 03/06/2023] [Revised: 04/16/2023] [Accepted: 04/23/2023] [Indexed: 05/02/2023]
Abstract
AIMS Nerve growth factor (NGF) has been implicated as a key molecule of pathology-induced changes in C-fiber afferent nerve excitability, which contributes to the emergence of neurogenic detrusor overactivity due to spinal cord injury (SCI). It is also known that the second messenger signaling pathways activated by NGF utilize p38 Mitogen-Activated Protein Kinase (MAPK). We examined the roles of p38 MAPK on electrophysiological properties of capsaicin sensitive bladder afferent neurons with SCI mice. MAIN METHODS We used female C57BL/6 mice and transected their spinal cord at the Th8/9 level. Two weeks later, continuous administration of p38 MAPK inhibitor (0.51 μg/h, i.t. for two weeks) was started. Bladder afferent neurons were labelled with a fluorescent retrograde tracer, Fast-Blue (FB), injected into the bladder wall three weeks after SCI. Four weeks after SCI, freshly dissociated L6-S1 dorsal root ganglion neurons were prepared and whole cell patch clamp recordings were performed in FB-labelled neurons. After recording action potentials or voltage-gated K+ currents, the sensitivity of each neuron to capsaicin was evaluated. KEY FINDINGS In capsaicin-sensitive FB-labelled neurons, SCI significantly reduced the spike threshold and increased the number of action potentials during 800 ms membrane depolarization. Densities of slow-decaying A-type K+ (KA) and sustained delayed rectifier-type K+ (KDR) currents were significantly reduced by SCI. The reduction of KA, but not KDR, current density was reversed by the treatment with p38 MAPK inhibitor. SIGNIFICANCE P38 MAPK plays an important role in hyperexcitability of capsaicin-sensitive bladder afferent neurons due to the reduction in KA channel activity in SCI mice.
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Affiliation(s)
- Takahisa Suzuki
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America; Department of Urology, Yokohama City University Graduate School of Medicine, Yokohama, Japan; Department of Urology, Kanagawa Rehabilitation Hospital, Atsugi, Japan
| | - Takahiro Shimizu
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America
| | - Sergei Karnup
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America
| | - Nobutaka Shimizu
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America
| | - Jianshu Ni
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America
| | - William C de Groat
- Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America
| | - Naoki Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America; Department of Pharmacology and Chemical Biology, University of Pittsburgh School of Medicine, Pittsburgh, PA, United States of America.
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22
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Shimizu N, Saito T, Wada N, Hashimoto M, Shimizu T, Kwon J, Cho KJ, Saito M, Karnup S, de Groat WC, Yoshimura N. Molecular Mechanisms of Neurogenic Lower Urinary Tract Dysfunction after Spinal Cord Injury. Int J Mol Sci 2023; 24:7885. [PMID: 37175592 PMCID: PMC10177842 DOI: 10.3390/ijms24097885] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 04/21/2023] [Accepted: 04/22/2023] [Indexed: 05/15/2023] Open
Abstract
This article provides a synopsis of current progress made in fundamental studies of lower urinary tract dysfunction (LUTD) after spinal cord injury (SCI) above the sacral level. Animal models of SCI allowed us to examine the effects of SCI on the micturition control and the underlying neurophysiological processes of SCI-induced LUTD. Urine storage and elimination are the two primary functions of the LUT, which are governed by complicated regulatory mechanisms in the central and peripheral nervous systems. These neural systems control the action of two functional units in the LUT: the urinary bladder and an outlet consisting of the bladder neck, urethral sphincters, and pelvic-floor striated muscles. During the storage phase, the outlet is closed, and the bladder is inactive to maintain a low intravenous pressure and continence. In contrast, during the voiding phase, the outlet relaxes, and the bladder contracts to facilitate adequate urine flow and bladder emptying. SCI disrupts the normal reflex circuits that regulate co-ordinated bladder and urethral sphincter function, leading to involuntary and inefficient voiding. Following SCI, a spinal micturition reflex pathway develops to induce an overactive bladder condition following the initial areflexic phase. In addition, without proper bladder-urethral-sphincter coordination after SCI, the bladder is not emptied as effectively as in the normal condition. Previous studies using animal models of SCI have shown that hyperexcitability of C-fiber bladder afferent pathways is a fundamental pathophysiological mechanism, inducing neurogenic LUTD, especially detrusor overactivity during the storage phase. SCI also induces neurogenic LUTD during the voiding phase, known as detrusor sphincter dyssynergia, likely due to hyperexcitability of Aδ-fiber bladder afferent pathways rather than C-fiber afferents. The molecular mechanisms underlying SCI-induced LUTD are multifactorial; previous studies have identified significant changes in the expression of various molecules in the peripheral organs and afferent nerves projecting to the spinal cord, including growth factors, ion channels, receptors and neurotransmitters. These findings in animal models of SCI and neurogenic LUTD should increase our understanding of pathophysiological mechanisms of LUTD after SCI for the future development of novel therapies for SCI patients with LUTD.
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Affiliation(s)
- Nobutaka Shimizu
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
- Pelvic Floor Center, Kochi Medical School, Kochi University, Nankoku 783-8505, Japan
| | - Tetsuichi Saito
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
| | - Naoki Wada
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
| | - Mamoru Hashimoto
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
| | - Takahiro Shimizu
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku 783-8505, Japan
| | - Joonbeom Kwon
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
| | - Kang Jun Cho
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
| | - Motoaki Saito
- Department of Pharmacology, Kochi Medical School, Kochi University, Nankoku 783-8505, Japan
| | - Sergei Karnup
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - William C. de Groat
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15213, USA
| | - Naoki Yoshimura
- Department of Urology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213, USA; (N.S.)
- Department of Pharmacology and Chemical Biology, University of Pittsburgh, Pittsburgh, PA 15213, USA
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23
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Fujii T, Nagamori S, Wiriyasermkul P, Zheng S, Yago A, Shimizu T, Tabuchi Y, Okumura T, Fujii T, Takeshima H, Sakai H. Parkinson's disease-associated ATP13A2/PARK9 functions as a lysosomal H +,K +-ATPase. Nat Commun 2023; 14:2174. [PMID: 37080960 PMCID: PMC10119128 DOI: 10.1038/s41467-023-37815-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 03/31/2023] [Indexed: 04/22/2023] Open
Abstract
Mutations in the human ATP13A2 (PARK9), a lysosomal ATPase, cause Kufor-Rakeb Syndrome, an early-onset form of Parkinson's disease (PD). Here, we demonstrate that ATP13A2 functions as a lysosomal H+,K+-ATPase. The K+-dependent ATPase activity and the lysosomal K+-transport activity of ATP13A2 are inhibited by an inhibitor of sarco/endoplasmic reticulum Ca2+-ATPase, thapsigargin, and K+-competitive inhibitors of gastric H+,K+-ATPase, such as vonoprazan and SCH28080. Interestingly, these H+,K+-ATPase inhibitors cause lysosomal alkalinization and α-synuclein accumulation, which are pathological hallmarks of PD. Furthermore, PD-associated mutants of ATP13A2 show abnormal expression and function. Our results suggest that the H+/K+-transporting function of ATP13A2 contributes to acidification and α-synuclein degradation in lysosomes.
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Affiliation(s)
- Takuto Fujii
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
| | - Shushi Nagamori
- Center for SI Medical Research and Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo, 105-8461, Japan
| | - Pattama Wiriyasermkul
- Center for SI Medical Research and Department of Laboratory Medicine, The Jikei University School of Medicine, Tokyo, 105-8461, Japan
| | - Shizhou Zheng
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Asaka Yago
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Takahiro Shimizu
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Yoshiaki Tabuchi
- Division of Molecular Genetics Research, Life Science Research Center, University of Toyama, Toyama, 930-0194, Japan
| | - Tomoyuki Okumura
- Department of Surgery and Science, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan
| | - Tsutomu Fujii
- Department of Surgery and Science, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan
| | - Hiroshi Takeshima
- Department of Biological Chemistry, Graduate School of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan
| | - Hideki Sakai
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
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24
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Matsuyama K, Shimizu T, Kato T. Systematic Classification of Curvature and Feature Descriptor of 3D Shape and Its Application to "Complexity" Quantification Methods. Entropy (Basel) 2023; 25:e25040624. [PMID: 37190412 PMCID: PMC10137503 DOI: 10.3390/e25040624] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/31/2023] [Accepted: 03/31/2023] [Indexed: 05/17/2023]
Abstract
Generative design is a system that automates part of the design process, but it cannot evaluate psychological issues related to shapes, such as "beauty" and "liking". Designers therefore evaluate and choose the generated shapes based on their experience. Among the design features, "complexity" is considered to influence "aesthetic preference". Although feature descriptors calculated from curvature can be used to quantify "complexity", the selection guidelines for curvature and feature descriptors have not been adequately discussed. Therefore, this study aimed to conduct a systematic classification of curvature and a feature descriptor of 3D shapes and to apply the results to the "complexity" quantification. First, we surveyed the literature on curvature and feature descriptors and conducted a systematic classification. To quantify "complexity", we used five curvatures (Gaussian curvature, mean curvature, Casorati curvature, shape index, and curvature index) and a feature descriptor (entropy of occurrence probability) obtained from the classification and compared them with the sensory evaluation values of "complexity". The results showed that the determination coefficient between the quantified and sensory evaluation values of "complexity" was highest when the mean curvature was used. In addition, the Casorati curvature tended to show the highest signal-to-noise ratio (i.e., a high determination coefficient irrespective of the parameters set in the entropy calculation). These results will foster the development of generative design of 3D shapes using psychological evaluation.
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Affiliation(s)
- Kazuma Matsuyama
- School of Integrated Design Engineering, Graduate School of Keio University, Yokohama 223-8522, Japan
| | - Takahiro Shimizu
- School of Integrated Design Engineering, Graduate School of Keio University, Yokohama 223-8522, Japan
| | - Takeo Kato
- Department of Mechanical Engineering, Keio University, Yokohama 223-8522, Japan
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25
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Kumagai K, Shimizu T, Nikaido M, Hirano T, Kakiuchi N, Takeuchi Y, Minamiguchi S, Sakurai T, Teramura M, Utsumi T, Hiramatsu Y, Nakanishi Y, Takai A, Miyamoto S, Ogawa S, Seno H. On the origin of gastric tumours: analysis of a case with intramucosal gastric carcinoma and oxyntic gland adenoma. J Pathol 2023; 259:362-368. [PMID: 36625379 DOI: 10.1002/path.6050] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 12/01/2022] [Accepted: 01/05/2023] [Indexed: 01/11/2023]
Abstract
Most gastric cancers develop in inflamed gastric mucosa due to Helicobacter pylori infection, typically with metaplastic changes. However, the origins of gastric cancer remain unknown. Here, we present a case of intramucosal gastric carcinoma (IGC) and oxyntic gland adenoma (OGA) derived from spasmolytic polypeptide-expressing metaplasia (SPEM). Early gastric cancer adjacent to a polyp was found in the upper corpus of a 71-year-old woman without H. pylori infection and was endoscopically resected. Histological examination showed IGC and OGA, both of which had predominant MUC6 expression. Interestingly, gastric glands with enriched MUC6-positive mucous cells, referred to as SPEM, expanded between them. Whole-exome sequencing analysis revealed a truncating KRAS(G12D) mutation in IGC, OGA, and SPEM. In addition, TP53 and CDKN2A mutations and a loss of chromosome 17p were found in the IGC, whereas a GNAS mutation was observed in the OGA. These results indicated that IGC and OGA originated from the KRAS-mutated SPEM. © 2023 The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Ken Kumagai
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takahiro Shimizu
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Mitsuhiro Nikaido
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Tomonori Hirano
- Department of Pathology and Tumour Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Nobuyuki Kakiuchi
- Department of Pathology and Tumour Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yasuhide Takeuchi
- Department of Pathology and Tumour Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan.,Department of Diagnostic Pathology, Kyoto University Hospital, Kyoto, Japan.,Clinical Bio Resource Center, Kyoto University Hospital, Kyoto, Japan
| | | | - Takaki Sakurai
- Department of Diagnostic Pathology, Kansai Electric Power Hospital, Osaka, Japan
| | - Mari Teramura
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Takahiro Utsumi
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yukiko Hiramatsu
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Yuki Nakanishi
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Atsushi Takai
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Shin'ichi Miyamoto
- Department of Gastroenterology and Hepatology, National Hospital Organization Kyoto Medical Center, Kyoto, Japan
| | - Seishi Ogawa
- Department of Pathology and Tumour Biology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, Kyoto, Japan
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26
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Shimizu T, Fujii T, Hanita K, Shinozaki R, Takamura Y, Suzuki Y, Kageyama T, Kato M, Nishijo H, Tominaga M, Sakai H. Polycystic kidney disease 2-like 1 channel contributes to the bitter aftertaste perception of quinine. Sci Rep 2023; 13:4271. [PMID: 36922541 PMCID: PMC10017821 DOI: 10.1038/s41598-023-31322-3] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 03/09/2023] [Indexed: 03/17/2023] Open
Abstract
Bitterness is an important physiological function in the defense responses to avoid toxic foods. The taste receptor 2 family is well known to mediate bitter taste perception in Type II taste cells. Here, we report that the polycystic kidney disease 2-like 1 (PKD2L1) channel is a novel sensor for the bitter aftertaste in Type III taste cells. The PKD2L1 channel showed rebound activation after the washout of quinine, a bitter tastant, in electrophysiological whole-cell recordings of the PKD2L1-expressing HEK293T cells and Ca2+-imaging analysis of Type III taste cells isolated from wild-type PKD2L1 mice. In the short-term two-bottle preference and lick tests in vivo, the wild-type mice avoided normal water while the PKD2L1-knockout mice preferred normal water after they ingested the quinine-containing water. These results may explain the new mechanism of the quinine-triggered bitter aftertaste perception in Type III taste cells.
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Affiliation(s)
- Takahiro Shimizu
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
| | - Takuto Fujii
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Keisuke Hanita
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Ryo Shinozaki
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Yusaku Takamura
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan
| | - Yoshiro Suzuki
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences (NIPS), Okazaki, 444-8787, Japan
| | - Teppei Kageyama
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Mizuki Kato
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan
| | - Hisao Nishijo
- Department of System Emotional Science, Faculty of Medicine, University of Toyama, Toyama, 930-0194, Japan
| | - Makoto Tominaga
- Division of Cell Signaling, National Institute for Physiological Sciences, National Institutes of Natural Sciences (NIPS), Okazaki, 444-8787, Japan
| | - Hideki Sakai
- Department of Pharmaceutical Physiology, Faculty of Pharmaceutical Sciences, University of Toyama, Toyama, 930-0194, Japan.
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Shimizu T, Yoshizato T, Kawakami K, Obara H, Kakuma T, Ushijima K. Gestational age-related changes in cervical gland length in normal singleton pregnancies from 17 to 36 weeks of gestation. J Obstet Gynaecol Res 2023; 49:1328-1334. [PMID: 36869610 DOI: 10.1111/jog.15627] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 02/15/2023] [Indexed: 03/05/2023]
Abstract
AIM To determine the gestational age-related changes in cervical gland length in relation to cervical length (CL) in normal singleton pregnancies. METHODS We studied 363 women with an uncomplicated singleton pregnancy (188 nulliparous and 175 multiparous women with one or more previous transvaginal deliveries). A total of 1138 cervical gland and CLs were measured longitudinally at 17-36 weeks of gestation using transvaginal ultrasonography along the curvature from the external os to the lower uterine segment and the internal end of the cervical gland area (CGA), respectively. Gestational age-related changes in cervical gland and CLs and their relationships were analyzed using a linear mixed model. RESULTS Cervical gland and CLs decreased in different ways with advancing gestation depending on parity, and their changes were related to each other. The CGAs in nulliparous women were longer than those in multiparous women at 17-25 weeks of gestation (p < 0.05), but with no differences thereafter. CLs in multiparous women were different from those in nulliparous women at 17-23 and 35-36 weeks (p < 0.05), but there were no differences at 24-34 weeks. The cervix did not shorten compared with the CGA throughout the observational periods in nulliparous and multiparous women. CONCLUSIONS Shortening of the cervix indicates changes to the lower uterine segment in normal pregnancies. The cervical gland region can be a useful marker representing the true cervix beyond 25 weeks of gestation, irrespective of parity.
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Affiliation(s)
- Takahiro Shimizu
- Department of Obstetrics and Gynecology, School of Medicine, Kurume University, Kurume, Japan.,Department of Obstetrics and Gynecology, NHO Kokura Medical Center, Kitakyushu, Japan
| | - Toshiyuki Yoshizato
- Department of Obstetrics and Gynecology, School of Medicine, Kurume University, Kurume, Japan
| | - Kosuke Kawakami
- Department of Obstetrics and Gynecology, School of Medicine, Kurume University, Kurume, Japan.,Department of Obstetrics and Gynecology, NHO Kokura Medical Center, Kitakyushu, Japan
| | - Hitoshi Obara
- Department of Biostatistics, School of Medicine, Kurume University, Kurume, Japan
| | - Tatsuyuki Kakuma
- Department of Biostatistics, School of Medicine, Kurume University, Kurume, Japan
| | - Kimio Ushijima
- Department of Obstetrics and Gynecology, School of Medicine, Kurume University, Kurume, Japan
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Fujii T, Shimizu T, Kaji Y, Katoh M, Sakai H. Activation of mouse Otop3 proton channels by Zn2+. Biochem Biophys Res Commun 2023; 658:55-61. [PMID: 37023615 DOI: 10.1016/j.bbrc.2023.03.066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 03/28/2023] [Indexed: 03/31/2023]
Abstract
Otopetrins (Otop1-Otop3) belong to a newly identified family of proton (H+) channels activated by extracellular acidification. Here, we found that Zn2+ activates the mouse Otop3 (mOtop3) proton channels by using electrophysiological patch-clamp techniques. In mOtop3-expressing human embryonic kidney HEK293T cells, a biphasic inward mOtop3 H+ current comprising a fast transient current followed by a sustained current was observed upon extracellular acidification at pH 5.0. No significant activation of the mOtop3 channel was observed at pH 6.5 and 7.4, but interestingly, Zn2+ dose-dependently induced a sustained activation of mOtop3 under these pH conditions. Increasing the Zn2+ concentration had no effect on the reversal potential of the channel currents, suggesting that Zn2+ does not permeate through the mOtop3. The activation of the mOtop3 channel was specific to Zn2+ among divalent metal cations. Our findings reveal a novel modulatory mechanism of mOtop3 proton channels by Zn2+.
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Hoshino M, Itoh A, Shimizu T, Akiyama H, Yamano Y. [Varicella-Zoster Myelitis with Medullary Infarction: A Case Report]. Brain Nerve 2023; 75:269-273. [PMID: 36890763 DOI: 10.11477/mf.1416202319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 03/10/2023]
Abstract
We present the case of a 62-year-old woman who was receiving treatment for herpes zoster and experienced paraplegia, and bladder and bowel disturbance. The brain MRI diffusion-weighted image showed an abnormal hyperintense signal and apparent diffusion coefficient decreased in left medulla oblongata. The spinal cord MRI T2-weighted image showed abnormal hyperintense lesions in the left side of cervical spinal cord and thoracic spinal cord. We diagnosed varicella-zoster myelitis with medullary infarction, because varicella-zoster virus DNA was detected in the cerebrospinal fluid by polymerase chain reaction. The patient recovered with early treatment. This case shows the importance of evaluating not only skin lesions, but also distant lesions. (Received 15 November, 2022; Accepted 12 Jaunuary, 2023; Published 1 March, 2023).
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Affiliation(s)
- Masashi Hoshino
- Department of Internal Medicine, Division of Neurology, St. Marianna University School of Medicine
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Sun XM, Yoshida A, Toutani F, Shimizu T, Oda T, Osatomi K. Cloning, DNA sequence, and expression of flagellins from high and low virulence strains of Edwardsiella tarda and their macrophage-stimulating activities. Microb Pathog 2023; 176:105993. [PMID: 36657690 DOI: 10.1016/j.micpath.2023.105993] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 01/10/2023] [Accepted: 01/13/2023] [Indexed: 01/18/2023]
Abstract
Edwardsiella tarda is a causative pathogen of edwardsiellosis in fish. Our previous studies on high (NUF251) and low (NUF194) virulent strains of E. tarda demonstrated that NUF251 strain induced significantly higher levels of NO and TNF-α from fish and mouse macrophages than NUF194 strain. Subsequent studies suggested that a flagellin-like protein secreted from E. tarda might be a responsible factor for the macrophage-stimulating activities. To evaluate the activities of flagellins of E. tarda, in this study, the flagellin genes of NUF251 and NUF194 strains were isolated by PCR and cloned into pQE-30 and pCold I expression vectors, and then the recombinant flagellins of two strains were overexpressed in E. coli JM109 and pG-Tf/BL21, respectively. The molecular weight of the purified recombinant flagellins of NUF251 and NUF194 strains were estimated to be 45 kDa and 37 kDa, respectively on SDS-PAGE analysis. Referring the three-dimensional structure of Salmonella flagellin, which has been reported to have 4 domains (D0, D1, D2, and D3), high sequence homology between two flagellins of E. tarda was observed at conservative domain (D0 and D1) regions, whereas the sequences equivalent to D2 and D3 domains were different, and even equivalent to 57 amino acids were deleted in NUF194. Both recombinant flagellins induced NO production, mRNA expression level of inducible NO synthase (iNOS), and intercellular ROS production in mouse macrophage cell line RAW264.7 cells. Also, the secretion of TNF-α and its mRNA expression level were increased by treatment of both recombinant flagellins. These results indicate that the recombinant flagellins from different virulent E. tarda strains can stimulate macrophages with nearly equal levels as judged by the parameters tested, even though they are differences in the structure and molecular weight, suggesting that conservative D0 and D1 domains are sufficient structural elements for the recombinant flagellins to induce a certain level of macrophage-stimulation in vitro. Further studies are necessary focusing on the role of D2 and D3 domain regions of the recombinant flagellins as macrophage-stimulating agent as well as their influence on host immune system in vivo.
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Affiliation(s)
- Xiao-Mi Sun
- Graduate School of Fisheries Science & Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Asami Yoshida
- Graduate School of Fisheries Science & Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan; Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan.
| | - Fukutarou Toutani
- Graduate School of Fisheries Science & Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan; Fisheries and Ocean Technologies Center, Hiroshima Prefectural Technology Research Institute, 6-21-1 Hatami, Ondo, Kure, Hiroshima, 737-1207, Japan
| | - Takahiro Shimizu
- Graduate School of Fisheries Science & Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Tatsuya Oda
- Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
| | - Kiyoshi Osatomi
- Graduate School of Fisheries Science & Environmental Studies, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan; Faculty of Fisheries, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki, 852-8521, Japan
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Buller S, Kohnke S, Hansford R, Shimizu T, Richardson WD, Blouet C. Median eminence myelin continuously turns over in adult mice. Mol Metab 2023; 69:101690. [PMID: 36739968 PMCID: PMC9950957 DOI: 10.1016/j.molmet.2023.101690] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/16/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE Oligodendrocyte progenitor cell differentiation is regulated by nutritional signals in the adult median eminence (ME), but the consequences on local myelination are unknown. The aim of this study was to characterize myelin plasticity in the ME of adult mice in health or in response to chronic nutritional challenge and determine its relevance to the regulation of energy balance. METHODS We assessed new oligodendrocyte (OL) and myelin generation and stability in the ME of healthy adult male mice using bromodeoxyuridine labelling and genetic fate mapping tools. We evaluated the contribution of microglia to ME myelin plasticity in PLX5622-treated C57BL/6J mice and in Pdgfra-Cre/ERT2;R26R-eYFP;Myrffl/fl mice, where adult oligodendrogenesis is blunted. Next, we investigated how high-fat feeding or caloric restriction impact ME OL lineage progression and myelination. Finally, we characterized the functional relevance of adult oligodendrogenesis on energy balance regulation. RESULTS We show that myelinating OLs are continuously and rapidly generated in the adult ME. Paradoxically, OL number and myelin amounts remain remarkably stable in the adult ME. In fact, the high rate of new OL and myelin generation in the ME is offset by continuous turnover of both. We show that microglia are required for continuous OL and myelin production, and that ME myelin plasticity regulates the recruitment of local immune cells. Finally, we provide evidence that ME myelination is regulated by the body's energetic status and demonstrate that ME OL and myelin plasticity are required for the regulation of energy balance and hypothalamic leptin sensitivity. CONCLUSIONS This study identifies a new mechanism modulating leptin sensitivity and the central control of energy balance and uncovers a previously unappreciated form of structural plasticity in the ME.
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Affiliation(s)
- Sophie Buller
- Wellcome-MRC Institute of Metabolic Science and Medical Research Council Metabolic Disease Unit, University of Cambridge, Cambridge, UK.
| | - Sara Kohnke
- Wellcome-MRC Institute of Metabolic Science and Medical Research Council Metabolic Disease Unit, University of Cambridge, Cambridge, UK.
| | - Robert Hansford
- Wellcome-MRC Institute of Metabolic Science and Medical Research Council Metabolic Disease Unit, University of Cambridge, Cambridge, UK.
| | - Takahiro Shimizu
- Wolfson Institute for Biomedical Research, University College London, London, UK.
| | - William D Richardson
- Wolfson Institute for Biomedical Research, University College London, London, UK.
| | - Clemence Blouet
- Wellcome-MRC Institute of Metabolic Science and Medical Research Council Metabolic Disease Unit, University of Cambridge, Cambridge, UK.
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Mizuno K, Kishimoto Y, Kawai Y, Fujimura S, Iwanaga K, Mizuno K, Shimizu T, Yokoyama A, Nikaido M, Hirohashi K, Muto M, Seno H, Tateya I, Omori K. A prospective evaluation of postoperative swallowing function and dysphagia following endoscopic laryngopharyngeal surgery. Int J Clin Oncol 2023; 28:521-530. [PMID: 36780098 DOI: 10.1007/s10147-023-02309-x] [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] [Received: 11/25/2022] [Accepted: 02/01/2023] [Indexed: 02/14/2023]
Abstract
BACKGROUND Endoscopic laryngopharyngeal surgery (ELPS) is a minimally invasive transoral surgery for superficial pharyngeal and laryngeal cancer, but dysphagia occasionally occurs post-treatment. We investigated dysphagia following ELPS and its risk factors. METHODS Of the 145 patients who underwent ELPS, 92 were evaluated in this study using the Hyodo score, Functional Outcome Swallowing Scale, Eating Assessment Tool-10 along with the total scores for the three items of the method of intake, time, and food preoperatively and on postoperative 1, 3, and 6 months. We examined the 6-month trends of these values. Furthermore, the fasting period post-surgery, the need for swallowing rehabilitation by a speech therapist, and postoperative pneumonia episodes were set as outcomes reflecting the short-term swallowing function. We determined the associations between these outcomes and patient background factors. RESULTS Postoperatively, the Hyodo score worsened at 1 month but recovered at 3 months. The Hyodo scores of all patients who underwent postcricoid ELPS did not worsen. The diameter of the resected specimen (DRS) was significantly associated with the need for swallowing rehabilitation and postoperative fasting time. A DRS ≥ 35 mm was considered the threshold for the need of swallowing rehabilitation, postoperative pneumonia, and prolonged postoperative fasting time. CONCLUSION ELPS exerts a temporal and limited impact on the swallowing function, which recovers within 3 months in every swallowing evaluation. This necessitates additional care during the treatment of patients with mucosal defects ≥ 35 mm, owing to the significant association between the DRS and short-term swallowing function.
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Affiliation(s)
- Keisuke Mizuno
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Yo Kishimoto
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan.
| | - Yoshitaka Kawai
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Shintaro Fujimura
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Ken Iwanaga
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Kayoko Mizuno
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Takahiro Shimizu
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Akira Yokoyama
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Mitsuhiro Nikaido
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Kenshiro Hirohashi
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Manabu Muto
- Department of Therapeutic Oncology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
| | - Ichiro Tateya
- Department of Otolaryngology, Head and Neck Surgery, Fujita Health University, 1-98 Dengakugakubo Kutsukake-Cho, Toyoake, Aichi, 470-1192, Japan
| | - Koichi Omori
- Department of Otolaryngology, Head and Neck Surgery, Graduate School of Medicine, Kyoto University, 54 Shogoin Kawahara-Cho, Sakyo-Ku, Kyoto, 606-8507, Japan
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Shimizu T, Shirasaki H, Okafuji K, Sawazaki A, Iwabuchi T, Matubayashi R. A case of prolonged COVID-19 treated with tixagevimab/cilgavimab. Respirol Case Rep 2023; 11:e01099. [PMID: 36789174 PMCID: PMC9912017 DOI: 10.1002/rcr2.1099] [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: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 02/12/2023] Open
Abstract
A 54-year-old woman presented to our hospital with a fever and cough. The patient had a medical history of follicular lymphoma treated with obinutuzumab. She was infected with an omicron variant of coronavirus disease 2019 and developed viral pneumonia. Antibiotics, molnupiravir, sotrovimab, and prednisolone were administered but were ineffective. The patient's symptoms and pneumonia persisted. She could not produce antibodies against severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) because she was administered obinutuzumab. Finally, when we administered 300 mg of tixagevimab and cilgavimab, pneumonia immediately improved. However, the infection was prolonged for more than 4 months. Patients treated with anti-CD20 monoclonal antibodies may have a prolonged SARS-CoV-2 infection. In such cases, tixagevimab/cilgavimab may be effective.
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Affiliation(s)
- Takahiro Shimizu
- Department of Internal MedicineFukui Prefecture Saiseikai HospitalFukui‐shiJapan
| | - Hiroki Shirasaki
- Department of Internal MedicineFukui Prefecture Saiseikai HospitalFukui‐shiJapan
| | - Kazuhiro Okafuji
- Department of Internal MedicineFukui Prefecture Saiseikai HospitalFukui‐shiJapan
| | - Aiko Sawazaki
- Department of Internal MedicineFukui Prefecture Saiseikai HospitalFukui‐shiJapan
| | - Tasuku Iwabuchi
- Department of Internal MedicineFukui Prefecture Saiseikai HospitalFukui‐shiJapan
| | - Ryo Matubayashi
- Department of Internal MedicineFukui Prefecture Saiseikai HospitalFukui‐shiJapan
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Itazawa T, Morita E, Koga T, Okada K, Shimizu T, Ueda Y. The Value of IL-25, IL-33, and TSLP in Nasal Secretions as a Biomarker of Severity of Allergic Rhinitis in Children. J Allergy Clin Immunol 2023. [DOI: 10.1016/j.jaci.2022.12.645] [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: 02/05/2023]
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Fujii T, Shimizu T, Sakai H. [Novel pathophysiological functions of Na +,K +-ATPases and Cl - channels in cancer cells]. Nihon Yakurigaku Zasshi 2023; 158:465-468. [PMID: 37914325 DOI: 10.1254/fpj.23057] [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: 11/03/2023]
Abstract
Na+,K+-ATPases are essential for maintaining the membrane potential in almost all cells, and their catalytic subunits have four isoforms (α1-α4). Volume-regulated anion channel (VRAC) plays an important role in the cell death signaling pathway in addition to its fundamental role in cell volume maintenance. First, we introduce that disruption of actin filaments cause the dysfunction of VRAC, which elicits resistance to cisplatin in the cancer cells. Next, we summarize the cardiac glycosides-induced signaling pathway mediated by the crosstalk between Na+,K+-ATPase α1-isoform (α1NaK) and VRAC in the membrane microdomain of the cancer cells. In this mechanism, sub-micromolar concentrations of cardiac glycosides bind to the receptor-type α1NaK, and generate VRAC activities concomitantly with a deceleration of cancer cell proliferation. Finally, we summarize the pathophysiological function of α3NaK, which is abnormally expressed in the intracellular vesicles of cancer cells. The cancer cell can survive even under loss of anchorage because they have the avoidance mechanism for anoikis. On cancer cell detachment, we found that intracellular α3NaK is translocated to the plasma membrane and this event contributes to the survival of the cells. Interestingly, cardiac glycosides inhibited the α3NaK translocation and cell survival. Our findings may open up new opportunities for the development of cancer medicines.
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Affiliation(s)
- Takuto Fujii
- Faculty of Pharmaceutical Sciences, University of Toyama
| | | | - Hideki Sakai
- Faculty of Pharmaceutical Sciences, University of Toyama
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Takano Y, Shibano M, Takizawa Y, Arai E, Koyama S, Shimizu T, Matsumoto T. Isolation and Molecular Confirmation of an indole-negative Klebsiella oxytoca isolated from a patient with cystitis. Jpn J Infect Dis 2022; 76:159-161. [PMID: 36575027 DOI: 10.7883/yoken.jjid.2022.575] [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: 12/28/2022]
Abstract
Klebsiella oxytoca is an opportunistic pathogen that causes nosocomial infections. We describe an unusual clinical strain of indole-negative K. oxytoca, GU175, isolated from the urine of a patient with cystitis. The GU175 strain was identified as K. pneumoniae with a probability of 99.40%, negative for indole production, and resistant to third-generation cephalosporins by using the MicroScan Walkaway 40 SI system with the Negative combo EN1 J panel. Biochemical characterization of this strain using a lysine-indole motility medium was negative for indole production. However, identification tests using the MALDI Biotyper system and 16S rRNA gene sequence analysis revealed that GU175 was K. oxytoca. DNA sequence analysis of the tryptophanase operon comparing the GU175 strain with the revertant GU176 strain that tested positive for indole revealed a point mutation in the Shine-Dalgarno sequence upstream of tnaC in the GU175 strain. This is the first report of indole-negative K. oxytoca- attributed to a mutation in the DNA sequence of the tryptophanase operon- isolated from a patient with a urinary tract infection. Since indole-negative K. oxytoca can be misidentified as K. pneumoniae by biochemical characterization, clinical microbiologists should be aware of such misidentifications.
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Affiliation(s)
- Youta Takano
- Department of Clinical Laboratory, Nagano Chuo Hospital, Japan
| | - Makiko Shibano
- Department of Clinical Laboratory, Nagano Chuo Hospital, Japan
| | - Yuuya Takizawa
- Department of Clinical Laboratory, Nagano Chuo Hospital, Japan
| | - Eriko Arai
- Department of Laboratory Medicine, Shinshu University Hospital, Japan
| | | | - Takahiro Shimizu
- Department of Clinical Laboratory, Nagano Municipal Hospital, Japan
| | - Takehisa Matsumoto
- Department of Laboratory Sciences, Gunma University Graduate School of Health Sciences, Japan
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Shimizu T, Kim M, Palangka CR, Seki-Soda M, Ogawa M, Takayama Y, Yokoo S. Determination of diagnostic and predictive parameters for vertical mandibular invasion in patients with lower gingival squamous cell carcinoma: A retrospective study. Medicine (Baltimore) 2022; 101:e32206. [PMID: 36626519 PMCID: PMC9750639 DOI: 10.1097/md.0000000000032206] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Vertical mandibular invasion of lower gingival squamous cell carcinoma (LGSCC) determines the method of resection, which significantly affects the patient's quality of life. Therefore, in mandibular invasion by LGSCC, it is extremely important to monitor progression, specifically whether invasion is limited to the cortical bone or has progressed to the bone marrow. This retrospective study aimed to identify the diagnostic and predictive parameters for mandibular invasion, particularly vertical invasion, to enable appropriate selection of the method of mandibular resection. Of the patients who underwent surgery for LGSCC between 2009 and 2017, 64 were eligible for participation in the study based on tissue microarrays (TMA) from surgical specimens. This study analyzed morphological features using computed tomography (CT), and metabolic characteristics using maximum standardized uptake value (SUVmax), peak value of SUV (SUVpeak), metabolic tumor volume (MTV), and total lesion glycolysis (TLG). Moreover, immunohistochemical analysis of proteins, including parathyroid hormone-related protein (PTHrP), interleukin-6 (IL-6), E-cadherin, and programmed cell death-1 ligand 1 (PD-L1), was performed. Statistical analysis was performed using univariate logistic regression analysis with the forward selection method. The present study showed that MTV (≥2.9 cm3) was an independent diagnostic and predictive factor for positivity of mandibular invasion. Additionally, TLG (≥53.9 bw/cm3) was an independent diagnostic and predictive factor for progression to bone marrow invasion. This study demonstrated that in addition to morphological imaging by CT, the volume-based parameters of MTV and TLG on fluorine-18 fluorodeoxyglucose positron emission tomography were important for predicting pathological mandibular invasion in patients with LGSCC. A more accurate preoperative diagnosis of vertical mandibular invasion would enable the selection of appropriate surgical procedure for mandibular resection.
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Affiliation(s)
- Takahiro Shimizu
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- * Correspondence: Takahiro Shimizu, Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, 3-39-22, Showa-machi, Maebashi, Gunma, 371-8511, Japan (e-mail: )
| | - Mai Kim
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Citra R.A.P. Palangka
- Department of Diagnostic Radiology and Nuclear Medicine, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Mai Seki-Soda
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
- Department of Diagnostic Pathology, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Masaru Ogawa
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Yu Takayama
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
| | - Satoshi Yokoo
- Department of Oral and Maxillofacial Surgery, and Plastic Surgery, Gunma University Graduate School of Medicine, Maebashi, Gunma, Japan
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Ito M, Kamata M, Shimizu T, Uchida H, Egawa S, Takeshima R, Mizukawa I, Watanabe A, Tada Y. 400 308-nm excimer lamp ameliorates MC-903 induced atopic dermatitis with a reduction of thymic stromal lymphopoietin mRNA levels. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.413] [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: 11/19/2022]
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Shimizu T, Nagata T, Fujimoto A, Inoue S, Nagata M, Mori K. Occupational safety and health aspects of corporate social responsibility reporting in Japan: comparison between 2012 and 2020. BMC Res Notes 2022; 15:260. [PMID: 35870955 PMCID: PMC9308243 DOI: 10.1186/s13104-022-06145-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 07/05/2022] [Indexed: 11/12/2022] Open
Abstract
Objective To survey the content of occupational safety and health (OSH) disclosed in corporate social responsibility (CSR)-related reports and integrated reports in 2020 and to compare the changes between 2012 and 2020 according to industry and company size. Results Among all companies, 441 (20.3%) issued CSR-related reports and 590 (28.1%) issued integrated reports. The number (percentage) of companies that issued either CSR-related reports or integrated reports was 880 (40.5%). The percentages of both CSR-related reports and integrated reports increased with increased company size. The number (percentage) of companies reporting OSH in CSR-related reports was 391 (88.7%) and that in integrated reports was 493 (83.6%). The percentage of OSH reporting in CSR-related reports and integrated reports was high in secondary industries and low in tertiary industries. Supplementary Information The online version contains supplementary material available at 10.1186/s13104-022-06145-6.
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Moriyasu S, Shimizu T, Honda M, Ugawa Y, Hanajima R. Motor cortical plasticity and its correlation with motor symptoms in Parkinson's disease. eNeurologicalSci 2022; 29:100422. [PMID: 36097517 PMCID: PMC9463550 DOI: 10.1016/j.ensci.2022.100422] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2021] [Revised: 08/06/2022] [Accepted: 08/31/2022] [Indexed: 11/17/2022] Open
Abstract
Background The relationship between abnormal cortical plasticity and parkinsonian symptoms remains unclear in Parkinson's disease (PD). Objective We studied the relationship between their symptoms and degree of Long-term potentiation (LTP)-like effects induced by quadripulse magnetic stimulation (QPS) over the primary motor cortex, which has a small inter-individual variability in humans. Methods Participants were 16 PD patients (drug-naïve or treated with L-DOPA monotherapy) and 13 healthy controls (HC). LTP-like effects by QPS were compared between three conditions (HC、PD with or without L-DOPA). In PD, correlation analyses were performed between clinical scores (MDS-UPDRS, MMSE and MoCA-J) and the degree of LTP-like effects induced by QPS. Results In PD, QPS-induced LTP-like effect was reduced and restored by L-DOPA. The degree of the LTP was negatively correlated with MDS-UPDRS Part I and III scores, but not with MMSE and MoCA-J. In the sub-scores, upper limb bradykinesia and rigidity showed a negative correlation with the LTP-like effect whereas the tremor had no correlation. Conclusions Our results suggest that motor cortical plasticity relate with mechanisms underlying bradykinesia and rigidity in the upper limb muscles. LTP induced by QPS may be used as an objective marker of parkinsonian symptoms. Quadripulse magnetic stimulation (QPS) was applied to early PD patients. L-DOPA restored QPS-induced LTP of the primary motor cortex in early PD patients. The degree of LTP was negatively correlated with the severity of motor symptoms. Upper limb bradykinesia and rigidity had a strong negative correlation with LTP.
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Shimizu T, Ishiura H, Hara M, Shibata S, Unuma A, Kubota A, Sakuishi K, Inoue K, Goto J, Takahashi Y, Shirota Y, Hamada M, Shimizu J, Tsuji S, Toda T. Expanded clinical spectrum of oculopharyngodistal myopathy type 1. Muscle Nerve 2022; 66:679-685. [PMID: 36052448 DOI: 10.1002/mus.27717] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 12/14/2022]
Abstract
INTRODUCTION/AIMS Heterozygous CGG repeat expansions in low-density lipoprotein receptor-related protein 12 (LRP12) have recently been identified as a cause of oculopharyngodistal myopathy (OPDM), and the disease is designated as OPDM type 1 (OPDM1). In contrast to broadening of our knowledge on the genetic background of OPDM, what we know of the clinical phenotype of genetically confirmed OPDM1 remains limited. METHODS This investigation was a single-center case series study of OPDM consisting of ten patients from seven families. Repeat-primed polymerase chain reaction and Southern blot analyses were performed to confirm the CGG repeat expansions in LRP12. Clinical findings were retrospectively reviewed. RESULTS Seven patients from five families were identified as having CGG repeat expansions in LRP12. We found a high prevalence of axial muscle involvement, such as neck muscle weakness (6/7) and fatty infiltration in the rectus abdominis muscle, as revealed by computed tomography (5/5). We identified patients with very subtle oculopharyngeal symptoms, mimicking isolated distal myopathy. Muscle specimens were collected from the biceps brachii and tibialis anterior muscles of three patients. Myopathic changes were more severe with more atrophic fibers forming clusters in the tibialis anterior than the biceps brachii muscles of these three patients. No rimmed vacuoles were observed in the biceps brachii muscles in two of the three patients. DISCUSSION This study shows the expanded clinical spectrum of OPDM1, highlighting the importance of axial muscle evaluation in OPDM1. Considering patients with very subtle oculopharyngeal symptoms, genetic analysis of LRP12 should be considered in patients with isolated distal myopathy.
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Affiliation(s)
- Takahiro Shimizu
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Hiroyuki Ishiura
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Manato Hara
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Shota Shibata
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Atsushi Unuma
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Akatsuki Kubota
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Kaori Sakuishi
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Department of Neurology, Teikyo University Chiba Medical Center, Chiba, Japan
| | - Kiyoharu Inoue
- Department of Neurology, Fujieda Heisei Memorial Hospital, Shizuoka, Japan
| | - Jun Goto
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Department of Neurology, International University of Health and Welfare Mita Hospital, Tokyo, Japan
| | - Yuji Takahashi
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Department of Neurology, National Center Hospital, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Yuichiro Shirota
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Department of Clinical Laboratory, University of Tokyo Hospital, Tokyo, Japan
| | - Masashi Hamada
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Jun Shimizu
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Department of Physical Therapy, School of Health Sciences, Tokyo University of Technology, Tokyo, Japan
| | - Shoji Tsuji
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Department of Molecular Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan.,Institute of Medical Genomics, International University of Health and Welfare, Chiba, Japan
| | - Tatsushi Toda
- Department of Neurology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
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Yamamoto Y, Shimizu T, Mori M, Okamatsu C, Nakamura N, Watanabe T. Rim-type indocyanine green fluorescence pattern in a child with undifferentiated embryonal sarcoma of the liver treated with navigation surgery. Pediatr Blood Cancer 2022; 69:e29799. [PMID: 35920603 DOI: 10.1002/pbc.29799] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 05/11/2022] [Accepted: 05/11/2022] [Indexed: 11/07/2022]
Affiliation(s)
- Yuki Yamamoto
- Department of Pediatric Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - Takahiro Shimizu
- Department of Pediatric Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - Masaharu Mori
- Department of Pediatric Surgery, Tokai University School of Medicine, Kanagawa, Japan
| | - Chizuko Okamatsu
- Department of Pathology, Tokai University School of Medicine, Kanagawa, Japan
| | - Naoya Nakamura
- Department of Pathology, Tokai University School of Medicine, Kanagawa, Japan
| | - Toshihiko Watanabe
- Department of Pediatric Surgery, Tokai University School of Medicine, Kanagawa, Japan
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Shiraki A, Oyama J, Shimizu T, Node N. The DPP4 inhibitor linagliptin exacerbated heart failure due to energy deficiency via downregulation of glucose absorption and utilization in mice. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.2682] [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: 11/12/2022] Open
Abstract
Abstract
Background
It was reported that glucagon-like peptide-1 has cardio-protective effects, however, the occurrence of heart failure was increased with DPP4 inhibitor in some large clinical trials.
Purpose
The purpose of the present work was to clarify whether DPP4 inhibitor had any effects on chronic, dilated heart failure and to identify the mechanisms.
Methods
Heart / Muscle-specific Manganese superoxide dismutase (Mn-SOD)-deficient mice, (H/M-Sod−/−) which exert dilated cardiomyopathy were randomized to receive low dose (1 mg/kg) linagliptin, HF-L group; high dose (10 mg/kg) linagliptin, HF-H group; mixed with food, or normal food, HF group; for eight weeks. Then, evaluation was performed in cardiac function and pathophysiological changes.
Result
Interestingly, the mice treated with linagliptin treatment exhibited shorter life span and greater heart/body weight ratio. Echocardiographic studies showed decreased contractility in the HF-H group with compared to the HF control group. In Sirius Red staining, severer fibrosis was also observed in the linagliptin groups. HbA1c levels did not change among three groups, however, glycogen content in the liver was significantly decreased in the linagliptin groups. Similarly, indirect calorimetry showed decreased carbohydrate consumption in the HF-H group compared to the HF control group, suggesting worsening of heart failure was due to unavailability of carbohydrates as an energy source. Therefore, we fed a diet containing 33 wt% glucose to the HF-H group as complementary experiments. As a result, adequate glucose supplementation reduced cardiac fibrosis and cardiac function, while worsened life span, HbA1c levels and CHO consumption were not changed. Therefore, we hypothesized that there might be a change in the absorption of glucose in intestine or utilization ability of glucose in body another experiments were performed. 13C, which was released from mice after the oral administration of 13C glucose and measured by respiratory gas analysis, was significantly reduced in HF-H mice. The measurements the amount of 13C in feces revealed increased levels of unabsorbed glucose by linagliptin treatment in HF. In addition, GLUT2, a glucose transporter, in small intestine, was downregulated in the HF-H and the HF-HG groups. On the other hand, the cardiac uptake of Deoxy-D-glucose, 2-[1,2-3H(N)] (3H-2DG), which was injected from mice tail vein, was not different between in the HF-H group and in the HF control group. Taken together, linagliptin treatment may inhibit glucose transport in intestine in HF.
Conclusions
Linagliptin treatment exacerbated heart failure, resulting in shortened life span, worsened cardiac function, and fibrosis of the myocardium. DPP4 inhibitor may promote the cardiac cachexia and exacerbate heart failure at least, in part, through modification of glucose absorption and utilization.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
| | - J Oyama
- Saga University , Saga , Japan
| | - T Shimizu
- National Center for Geriatrics and Gerontology , Obu , Japan
| | - N Node
- Saga University , Saga , Japan
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Nemoto N, Samejima Y, Takenaka H, Yaguchi T, Kameda Y, Shimizu T, Sahara N, Takenaka H, Nagashima Y, Anzai H. The impact of right atrium and left atrium reverse remodeling for functional regurgitation of atrioventricular valve among patients who were underwent ablation for atrial fibrillation. Eur Heart J 2022. [DOI: 10.1093/eurheartj/ehac544.1653] [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
Atrial fibrillation (AF) is a risk factor of Regurgitation of Atrioventricular Valve and Regurgitation of Atrioventricular Valve is improved after ablation for AF. However, Mechanism of improvement of Tricuspid regurgitation (TR) and Mitral regurgitation (MR) after ablation for AF were unclear.
Methods
The one hundred fifty-seven cases consecutive patients who were underwent ablation for persistent AF were examined in this study. These patients were performed Holter ECG and Echocardiography 6 months after ablation for persistent AF. The area of the Right Atrium (RA), Left Atrium (LA), diameter of the tricuspid valve anulus and Mitral valve annulus, were measured by echocardiography at before and 6 months after ablation for AF. The reverse remodeling index (RRI) was defined as divided post area of RA and LA by pre area of RA and LA. The Improved group was defined as one or more than regurgitation grade improvements.
Results
TR improved in 56 cases (35.7%) of 157 cases and MR improved in 25 (16.6%) cases of 157 cases. The ratio of improved TR was significantly higher than ratio of improved MR (p<0.01). The difference in tricuspid annulus diameter before and after ablation for AF was significantly longer in TR improved group than in TR non-improved group. (4.9±5.3 mm vs 1.6±5.4 mm, p<0.01). The RRI of RA in TR improved group was significantly smaller than in TR non-improved group (0.73±0.19 vs 0.89±0.26 p<0.01). The difference in mitral annulus diameter before and after ablation for AF was not significant differences between MR improved group and MR non-improved group. The RRI of LA in MR improved group was significantly smaller than in MR non-improved group (0.79±0.22 vs 0.90±0.25 p<0.01). The RRI of RA was significantly smaller than RRI of LA among patients who were able to maintain sinus rhythm after ablation for persistent AF (0.79±0.23 vs 0.85±0.24 p=0.04).
Conclusion
Reverse remodeling of RA was higher than Reverse remodeling of LA among patients who were able to maintain sinus rhythm after ablation for persistent AF and Reverse remodeling of RA and LA were important factors of improvement of TR and MR after ablation for persistent AF. These results considered to be the cause why the improvement rate of TR was higher than the Improvement rate of MR after persistent AF.
Funding Acknowledgement
Type of funding sources: None.
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Affiliation(s)
- N Nemoto
- Ota Memorial Hospital , Ota-Shi , Japan
| | | | | | - T Yaguchi
- Ota Memorial Hospital , Ota-Shi , Japan
| | - Y Kameda
- Ota Memorial Hospital , Ota-Shi , Japan
| | - T Shimizu
- Ota Memorial Hospital , Ota-Shi , Japan
| | - N Sahara
- Ota Memorial Hospital , Ota-Shi , Japan
| | | | | | - H Anzai
- Ota Memorial Hospital , Ota-Shi , Japan
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Zhang Y, Li S, Uenaka T, Furuuchi K, Yonemori K, Shimizu T, Nishio S, Yunokawa M, Matsumoto K, Takehara K, Hasegawa K, Hirashima Y, Kato H, Otake Y, Miura T, Matsui J. Phase I Biomarker Analysis Results of MORAb-202 (Farletuzumab Ecteribulin) Effects on Vascular Remodeling and Immune Modulation in Patients With Ovarian Cancer. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01032-2] [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: 11/03/2022]
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46
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Taguchi S, Nakano J, Imasaki T, Kita T, Saijo-Hamano Y, Sakai N, Shigematsu H, Okuma H, Shimizu T, Nitta E, Kikkawa S, Mizobuchi S, Niwa S, Nitta R. Structural model of microtubule dynamics inhibition by kinesin-4 from the crystal structure of KLP-12 -tubulin complex. eLife 2022; 11:77877. [PMID: 36065637 PMCID: PMC9451533 DOI: 10.7554/elife.77877] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Accepted: 08/01/2022] [Indexed: 12/02/2022] Open
Abstract
Kinesin superfamily proteins are microtubule-based molecular motors driven by the energy of ATP hydrolysis. Among them, the kinesin-4 family is a unique motor that inhibits microtubule dynamics. Although mutations of kinesin-4 cause several diseases, its molecular mechanism is unclear because of the difficulty of visualizing the high-resolution structure of kinesin-4 working at the microtubule plus-end. Here, we report that KLP-12, a C. elegans kinesin-4 ortholog of KIF21A and KIF21B, is essential for proper length control of C. elegans axons, and its motor domain represses microtubule polymerization in vitro. The crystal structure of the KLP-12 motor domain complexed with tubulin, which represents the high-resolution structural snapshot of the inhibition state of microtubule-end dynamics, revealed the bending effect of KLP-12 for tubulin. Comparison with the KIF5B-tubulin and KIF2C-tubulin complexes, which represent the elongation and shrinking forms of microtubule ends, respectively, showed the curvature of tubulin introduced by KLP-12 is in between them. Taken together, KLP-12 controls the proper length of axons by modulating the curvature of the microtubule ends to inhibit the microtubule dynamics. From meter-long structures that allow nerve cells to stretch across a body to miniscule ‘hairs’ required for lung cells to clear mucus, many life processes rely on cells sporting projections which have the right size for their role. Networks of hollow filaments known as microtubules shape these structures and ensure that they have the appropriate dimensions. Controlling the length of microtubules is therefore essential for organisms, yet how this process takes place is still not fully elucidated. Previous research has shown that microtubules continue to grow when their end is straight but stop when it is curved. A family of molecular motors known as kinesin-4 participate in this process, but the exact mechanisms at play remain unclear. To investigate, Tuguchi, Nakano, Imasaki et al. focused on the KLP-12 protein, a kinesin-4 equivalent which helps to controls the length of microtubules in the tiny worm Caenorhabditis elegans. They performed genetic manipulations and imaged the interactions between KLP-12 and the growing end of a microtubule using X-ray crystallography. This revealed that KLP-12 controls the length of neurons by inhibiting microtubule growth. It does so by modulating the curvature of the growing end of the filament to suppress its extension. A ‘snapshot’ of KLP-12 binding to a microtubule at the resolution of the atom revealed exactly how the protein helps to bend the end of the filament to prevent it from growing further. These results will help to understand how nerve cells are shaped. This may also provide insights into the molecular mechanisms for various neurodegenerative disorders caused by problems with the human equivalents of KLP-12, potentially leading to new therapies.
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Affiliation(s)
- Shinya Taguchi
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan.,Division of Anesthesiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Juri Nakano
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan
| | - Tsuyoshi Imasaki
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Tomoki Kita
- Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | - Yumiko Saijo-Hamano
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | | | | | - Hiromichi Okuma
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takahiro Shimizu
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Eriko Nitta
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Satoshi Kikkawa
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Satoshi Mizobuchi
- Division of Anesthesiology, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Shinsuke Niwa
- Graduate School of Life Sciences, Tohoku University, Sendai, Japan.,Department of Applied Physics, Graduate School of Engineering, Tohoku University, Sendai, Japan.,Frontier Research Institute for Interdisciplinary Sciences (FRIS), Tohoku University, Sendai, Japan
| | - Ryo Nitta
- Division of Structural Medicine and Anatomy, Department of Physiology and Cell Biology, Kobe University Graduate School of Medicine, Kobe, Japan
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Hiramatsu Y, Utsumi T, Higuchi H, Hayashi J, Horimatsu T, Nikaido M, Nakanishi Y, Shimizu T, Muto M, Seno H. Thermal tissue damage caused by new endoscope model due to light absorption. J Gastroenterol Hepatol 2022; 37:1801-1805. [PMID: 35861136 DOI: 10.1111/jgh.15963] [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: 05/25/2022] [Revised: 07/05/2022] [Accepted: 07/11/2022] [Indexed: 12/09/2022]
Abstract
BACKGROUND AND AIM Bright endoscopic light sources improve the visibility of the intestinal mucosa. A newly launched endoscopic system developed by Olympus Corporation (Tokyo, Japan) in 2020 required modification to prevent heat-induced tissue damage, which reportedly occurs during magnifying chromoendoscopy. We investigated the mechanism of this phenomenon by evaluating the rise in temperature of stained and unstained porcine mucosa using the new and previous endoscopic systems. METHODS Surface temperatures of stained (India ink, 0.05% crystal violet, 0.5% methylene blue, or 0.2% indigo carmine) and unstained porcine mucosa were evaluated using infrared imaging after contact with the new endoscopic system before it was modified (system-EVIS X1; scope-GIF-EZ1500) and compared with a previous endoscopic system (system-EVIS EXERAIII; scope-GIF-H190). We performed histological analysis of the porcine mucosa stained with 0.05% crystal violet after contact with the new endoscope to evaluate the degree of tissue damage. RESULTS Surface temperatures remained < 40°C when the new endoscope was in contact with the unstained mucosa. However, the maximum surface temperature rose to > 70°C when the new endoscope was in contact with the stained mucosa (stained other than indigo carmine). Histological analysis revealed cavity formation in porcine epithelium stained with crystal violet where the endoscope made contact for ≥ 5 s . Using the previous endoscope, the maximum surface temperature of stained mucosa remained below approximately 60°C, and the surface temperature of the unstained mucosa remained below 30°C. CONCLUSIONS Heat transfer by light absorption could cause heat-induced tissue damage during magnifying chromoendoscopy using the new endoscope.
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Affiliation(s)
- Yukiko Hiramatsu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takahiro Utsumi
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hirokazu Higuchi
- Department of Medical Equipment, Kyoto University Hospital, Kyoto, Japan
| | - Jun Hayashi
- Department of Energy Conversion Science, Kyoto University, Kyoto, Japan
| | - Takahiro Horimatsu
- Institute for Advancement of Clinical and Translational Science (iACT), Kyoto University Hospital, Kyoto, Japan
| | - Mitsuhiro Nikaido
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Yuki Nakanishi
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Takahiro Shimizu
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Manabu Muto
- Department of Therapeutic Oncology, Kyoto University Graduate School of Medicine, Kyoto, Japan
| | - Hiroshi Seno
- Department of Gastroenterology and Hepatology, Kyoto University Graduate School of Medicine, Kyoto, Japan
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Rotow J, Yoh K, Powderly J, Shimizu T, Perets R, Paz-Ares L, Phillips A, Souers A, Ansell P, Jin J, Badawi M, Saab R, Morrison-Thiele G, Jeffries S, Neagu Aristide M, Carneiro B, Papadopoulos K. 1185TiP First-in-human phase I study of ABBV-637 as monotherapy and in combination in patients with relapsed and refractory solid tumors. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1308] [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: 11/01/2022] Open
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Shimizu T, Tasaka A, Wadachi J, Yamashita S. A new proposal for improving the accuracy of intraoral scanning for partially edentulous residual ridge. J Prosthodont Res 2022; 67:246-254. [PMID: 36031353 DOI: 10.2186/jpr.jpr_d_22_00088] [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: 11/06/2022]
Abstract
PURPOSE This study investigated the usefulness of a newly proposed intraoral scanning method, using markers that can be used directly in the oral cavity, in order to improve the accuracy of impression taking of the residual ridge for fabrication of removable partial dentures. METHODS An intraoral scanner was used to scan a dental model of a partially edentulous mandibular arch (Kennedy Class I). As markers, pieces of dried pasta were used. The scanning operation was performed under three conditions. In Condition 1, scanning was performed on the remaining teeth and the residual ridge without markers. In Condition 2, scanning of the remaining teeth and residual ridge was performed with markers. In Condition 3, the markers were removed from the model used in Condition 2, and the residual ridge was scanned again. The scanning data of each condition was superimposed on the control data, and the shape error was calculated and compared among the conditions. RESULTS There was a significant difference in trueness of the residual ridge before and after marker application. The application of markers improved the trueness, while maintaining precision. Re-scanning after removing the marker did not affect trueness between before and after re-scanning and the re-scanned region showed shape continuity with the surrounding region. CONCLUSION The present method using markers that can be used in the oral cavity was effective in improving the accuracy of impression taking at the residual ridge.
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Affiliation(s)
- Takahiro Shimizu
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
| | - Akinori Tasaka
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
| | - Juro Wadachi
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
| | - Shuichiro Yamashita
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
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50
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Tasaka A, Shimizu T, Ito K, Wadachi J, Odaka K, Yamashita S. Digital technology for fabrication of removable dental prosthesis with double crowns combining fiber-reinforced composite and zirconia. J Prosthodont Res 2022. [PMID: 36031348 DOI: 10.2186/jpr.jpr_d_22_00064] [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: 11/06/2022]
Abstract
PATIENTS This clinical report describes the process for fabricating a double-crown-retained removable dental prosthesis combining a fiber-reinforced composite and zirconia using digital technology. An 83-year-old woman presented with gingival swelling around the maxillary right premolar. The swollen tooth was the abutment tooth of a cross-arch fixed partial denture. An intraoral scanner (IOS) and computer-aided design/manufacturing as digital technology were used to plan treatment with a double-crown-retained removable dental prosthesis. A metal-free prosthesis using zirconia for the primary crown and fiberglass-reinforced composite resin for the secondary crown was planned, and the patient consented to the treatment plan. After autotransplantation of a tooth as one of the abutments, the IOS was used to obtain digital scans of the prepared surface of the abutment teeth, opposing dentition, and occlusal relationships. First, primary crowns were milled using zirconia. Next, the intraoral scanner obtained a pick-up impression of the primary crowns, and secondary crowns were designed and milled from the fiber-reinforced composite. After delivery, the patient expressed satisfaction with the functionality, esthetics, and fit of the double-crown-retained removable dental prosthesis. DISCUSSION Digital technology offers many advantages such as efficient fabrication of double crowns, reduced material costs, improved biocompatibility, and good aesthetics of metal-free materials. CONCLUSION This clinical report describes the application of digital technology for the fabrication of a double-crown-retained removable dental prosthesis combining a fiber-reinforced composite and zirconia, resulting in patient satisfaction.
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Affiliation(s)
- Akinori Tasaka
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan.,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Takahiro Shimizu
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
| | - Kosei Ito
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
| | - Juro Wadachi
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
| | - Kento Odaka
- Department of Oral and Maxillofacial Radiology, Tokyo Dental College, Tokyo, Japan.,Oral Health Science Center, Tokyo Dental College, Tokyo, Japan
| | - Shuichiro Yamashita
- Department of Removable Partial Prosthodontics, Tokyo Dental College, Tokyo, Japan
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