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Wakabayashi N, Kimura R, Kuwatani M, Matsui A, Ino N, Mitsuhashi T, Kishi K, Tsuneta S, Nakagawa J, Nishioka N, Sakamoto K, Kato F, Shimizu A, Hirano S, Kudo K. Gastrointestinal: Solid pseudopapillary neoplasm of the pancreas with high-grade malignant transformation. J Gastroenterol Hepatol 2024; 39:618-619. [PMID: 38224676 DOI: 10.1111/jgh.16455] [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: 09/27/2023] [Accepted: 12/11/2023] [Indexed: 01/17/2024]
Affiliation(s)
- N Wakabayashi
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - R Kimura
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - M Kuwatani
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - A Matsui
- Department of Gastroenterological Surgery II, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - N Ino
- Department of Gastroenterological Surgery II, Faculty of Medicine, Hokkaido University, Sapporo, Japan
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - T Mitsuhashi
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - K Kishi
- Department of Gastroenterology and Hepatology, Hokkaido University Hospital, Sapporo, Japan
| | - S Tsuneta
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - J Nakagawa
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - N Nishioka
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - K Sakamoto
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - F Kato
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
| | - A Shimizu
- Department of Surgical Pathology, Hokkaido University Hospital, Sapporo, Japan
| | - S Hirano
- Department of Gastroenterological Surgery II, Faculty of Medicine, Hokkaido University, Sapporo, Japan
| | - K Kudo
- Department of Diagnostic and Interventional Radiology, Hokkaido University Hospital, Sapporo, Japan
- Department of Diagnostic Imaging, Graduate School of Medicine, Hokkaido University, Sapporo, Japan
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Li X, Ono C, Warita N, Shoji T, Nakagawa T, Usukura H, Yu Z, Takahashi Y, Ichiji K, Sugita N, Kobayashi N, Kikuchi S, Kimura R, Hamaie Y, Hino M, Kunii Y, Murakami K, Ishikuro M, Obara T, Nakamura T, Nagami F, Takai T, Ogishima S, Sugawara J, Hoshiai T, Saito M, Tamiya G, Fuse N, Fujii S, Nakayama M, Kuriyama S, Yamamoto M, Yaegashi N, Homma N, Tomita H. Comprehensive evaluation of machine learning algorithms for predicting sleep-wake conditions and differentiating between the wake conditions before and after sleep during pregnancy based on heart rate variability. Front Psychiatry 2023; 14:1104222. [PMID: 37415686 PMCID: PMC10322181 DOI: 10.3389/fpsyt.2023.1104222] [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] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Accepted: 05/19/2023] [Indexed: 07/08/2023] Open
Abstract
Introduction Perinatal women tend to have difficulties with sleep along with autonomic characteristics. This study aimed to identify a machine learning algorithm capable of achieving high accuracy in predicting sleep-wake conditions and differentiating between the wake conditions before and after sleep during pregnancy based on heart rate variability (HRV). Methods Nine HRV indicators (features) and sleep-wake conditions of 154 pregnant women were measured for 1 week, from the 23rd to the 32nd weeks of pregnancy. Ten machine learning and three deep learning methods were applied to predict three types of sleep-wake conditions (wake, shallow sleep, and deep sleep). In addition, the prediction of four conditions, in which the wake conditions before and after sleep were differentiated-shallow sleep, deep sleep, and the two types of wake conditions-was also tested. Results and Discussion In the test for predicting three types of sleep-wake conditions, most of the algorithms, except for Naïve Bayes, showed higher areas under the curve (AUCs; 0.82-0.88) and accuracy (0.78-0.81). The test using four types of sleep-wake conditions with differentiation between the wake conditions before and after sleep also resulted in successful prediction by the gated recurrent unit with the highest AUC (0.86) and accuracy (0.79). Among the nine features, seven made major contributions to predicting sleep-wake conditions. Among the seven features, "the number of interval differences of successive RR intervals greater than 50 ms (NN50)" and "the proportion dividing NN50 by the total number of RR intervals (pNN50)" were useful to predict sleep-wake conditions unique to pregnancy. These findings suggest alterations in the vagal tone system specific to pregnancy.
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Affiliation(s)
- Xue Li
- Department of Psychiatry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Chiaki Ono
- Department of Psychiatry, Tohoku University Hospital, Sendai, Japan
| | - Noriko Warita
- Department of Preventive Medicine and Epidemiology, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Tomoka Shoji
- Department of Psychiatry, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Preventive Medicine and Epidemiology, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Takashi Nakagawa
- Department of Psychiatry, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Psychiatry, Tohoku University Hospital, Sendai, Japan
| | - Hitomi Usukura
- Department of Disaster Psychiatry, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Zhiqian Yu
- Department of Disaster Psychiatry, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Yuta Takahashi
- Department of Psychiatry, Tohoku University Hospital, Sendai, Japan
| | - Kei Ichiji
- Department of Radiological Imaging and Informatics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Norihiro Sugita
- Department of Management Science and Technology, Graduate School of Engineering, Tohoku University, Sendai, Japan
| | | | - Saya Kikuchi
- Department of Psychiatry, Tohoku University Hospital, Sendai, Japan
| | - Ryoko Kimura
- Department of Psychiatry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Yumiko Hamaie
- Department of Psychiatry, Tohoku University Hospital, Sendai, Japan
- Department of Disaster Psychiatry, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Mizuki Hino
- Department of Disaster Psychiatry, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Yasuto Kunii
- Department of Psychiatry, Tohoku University Hospital, Sendai, Japan
- Department of Disaster Psychiatry, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Keiko Murakami
- Department of Preventive Medicine and Epidemiology, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Mami Ishikuro
- Department of Preventive Medicine and Epidemiology, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Taku Obara
- Department of Preventive Medicine and Epidemiology, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Tomohiro Nakamura
- Department of Health Record Informatics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Fuji Nagami
- Department of Public Relations and Planning, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Takako Takai
- Department of Health Record Informatics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Soichi Ogishima
- Department of Health Record Informatics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Junichi Sugawara
- Department of Community Medical Supports, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Tetsuro Hoshiai
- Department of Obstetrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masatoshi Saito
- Department of Obstetrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Gen Tamiya
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Nobuo Fuse
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Susumu Fujii
- Department of Disaster Medical Informatics, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Masaharu Nakayama
- Department of Disaster Medical Informatics, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Shinichi Kuriyama
- Department of Preventive Medicine and Epidemiology, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
- Department of Disaster Public Health, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
| | - Masayuki Yamamoto
- Department of Management Science and Technology, Graduate School of Engineering, Tohoku University, Sendai, Japan
- Department of Integrative Genomics, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
| | - Nobuo Yaegashi
- Department of Public Relations and Planning, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
- Department of Obstetrics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Noriyasu Homma
- Department of Radiological Imaging and Informatics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroaki Tomita
- Department of Psychiatry, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Psychiatry, Tohoku University Hospital, Sendai, Japan
- Department of Preventive Medicine and Epidemiology, Tohoku University Tohoku Medical Megabank Organization, Sendai, Japan
- Department of Disaster Psychiatry, International Research Institute of Disaster Sciences, Tohoku University, Sendai, Japan
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Hayashi K, Tanaka Y, Tsuda T, Nomura A, Fujino N, Furusho H, Sakai N, Iwata Y, Usui S, Sakata K, Kato T, Tada H, Kusayama T, Usuda K, Kawashiri MA, Passman RS, Wada T, Yamagishi M, Takamura M, Fujino N, Nohara A, Kawashiri MA, Hayashi K, Sakata K, Yoshimuta T, Konno T, Funada A, Tada H, Nakanishi C, Hodatsu A, Mori M, Tsuda T, Teramoto R, Nagata Y, Nomura A, Shimojima M, Yoshida S, Yoshida T, Hachiya S, Tamura Y, Kashihara Y, Kobayashi T, Shibayama J, Inaba S, Matsubara T, Yasuda T, Miwa K, Inoue M, Fujita T, Yakuta Y, Aburao T, Matsui T, Higashi K, Koga T, Hikishima K, Namura M, Horita Y, Ikeda M, Terai H, Gamou T, Tama N, Kimura R, Tsujimoto D, Nakahashi T, Ueda K, Ino H, Higashikata T, Kaneda T, Takata M, Yamamoto R, Yoshikawa T, Ohira M, Suematsu T, Tagawa S, Inoue T, Okada H, Kita Y, Fujita C, Ukawa N, Inoguchi Y, Ito Y, Araki T, Oe K, Minamoto M, Yokawa J, Tanaka Y, Mori K, Taguchi T, Kaku B, Katsuda S, Hirase H, Haraki T, Fujioka K, Terada K, Ichise T, Maekawa N, Higashi M, Okeie K, Kiyama M, Ota M, Todo Y, Aoyama T, Yamaguchi M, Noji Y, Mabuchi T, Yagi M, Niwa S, Takashima Y, Murai K, Nishikawa T, Mizuno S, Ohsato K, Misawa K, Kokado H, Michishita I, Iwaki T, Nozue T, Katoh H, Nakashima K, Ito S, Yamagishi M. Correction: Characterization of baseline clinical factors associated with incident worsening kidney function in patients with non-valvular atrial fibrillation: the Hokuriku-Plus AF Registry. Heart Vessels 2023; 38:412. [PMID: 36508013 DOI: 10.1007/s00380-022-02218-5] [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] [Indexed: 12/14/2022]
Affiliation(s)
- Kenshi Hayashi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.
| | - Yoshihiro Tanaka
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Toyonobu Tsuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Akihiro Nomura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Noboru Fujino
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hiroshi Furusho
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Department of Cardiology, Ishikawa Prefectural Central Hospital, 2-1, Kuratsuki-higashi, Kanazawa, Japan
| | - Norihiko Sakai
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Yasunori Iwata
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Soichiro Usui
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Kenji Sakata
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takeshi Kato
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Hayato Tada
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Takashi Kusayama
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Keisuke Usuda
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Masa-Aki Kawashiri
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
| | - Rod S Passman
- Center for Arrhythmia Research, Northwestern University Feinberg School of Medicine, Chicago, IL, USA.,Division of Cardiology, Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | - Takashi Wada
- Department of Nephrology and Laboratory Medicine, Institute of Medical, Pharmaceutical and Health Sciences, Kanazawa, Japan
| | - Masakazu Yamagishi
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan.,Osaka University of Human Sciences, Settsu, Osaka, Japan
| | - Masayuki Takamura
- Department of Cardiovascular Medicine, Kanazawa University Graduate School of Medical Sciences, 13-1, Takara-machi, Kanazawa, Ishikawa, 920-8641, Japan
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Kimura R, Sugita K, Sugihara T, Isomoto H, Yamamoto O. Treatment of Digital Ulcers and Reflux Oesophagitis in a Patient with Systemic Sclerosis: Increased Risk of Hepatotoxicity due to a Potential Drug-drug Interaction Between Bosentan and Vonoprazan. Acta Derm Venereol 2021; 101:adv00600. [PMID: 34694420 PMCID: PMC9455316 DOI: 10.2340/actadv.v101.439] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract is missing (Short communication)
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Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, 36-1 Nishi-cho, Yonago 683-8503, Japan.
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Masuda N, Tamura K, Yasojima H, Shimomura A, Sawaki M, Lee MJ, Yuno A, Trepel J, Kimura R, Nishimura Y, Saji S, Iwata H. Phase 1 trial of entinostat as monotherapy and combined with exemestane in Japanese patients with hormone receptor-positive advanced breast cancer. BMC Cancer 2021; 21:1269. [PMID: 34819039 PMCID: PMC8611843 DOI: 10.1186/s12885-021-08973-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 11/05/2021] [Indexed: 11/15/2022] Open
Abstract
Background Entinostat is an oral inhibitor of class I histone deacetylases intended for endocrine therapy-resistant patients with hormone receptor-positive (HR+) advanced or metastatic breast cancer (BC). We examined the safety, efficacy, and pharmacokinetics of entinostat monotherapy and combined entinostat/exemestane in Japanese patients. Methods This phase 1 study (3 + 3 dose-escalation design) enrolled postmenopausal women with advanced/metastatic HR+ BC previously treated with nonsteroidal aromatase inhibitors. Dose-limiting toxicities (DLTs) of entinostat monotherapy (3 mg/qw, 5 mg/qw, or 10 mg/q2w) and entinostat+exemestane (5 mg/qw + 25 mg/qd) were assessed. Pharmacokinetics, lysine acetylation (Ac-K), and T-cell activation markers were measured at multiple time points. Results Twelve patients were enrolled. No DLTs or grade 3–5 adverse events (AEs) occurred. Drug-related AEs (≥ 2 patients) during DLT observation were hypophosphatemia, nausea, and platelet count decreased. Six patients (50%) achieved stable disease (SD) for ≥ 6 months, including one treated for > 19 months. Median progression-free survival was 13.9 months (95% CI 1.9–not calculable); median overall survival was not reached. Area under the plasma concentration-time curve and Ac-K in peripheral blood CD19+ B cells increased dose-proportionally. The changing patterns of entinostat concentrations and Ac-K levels were well correlated. T-cell activation markers increased over time; CD69 increased more in patients with SD ≥ 6 months vs. SD < 6 months. Conclusions Entinostat monotherapy and combined entinostat/exemestane were well tolerated in Japanese patients, with no additional safety concerns compared with previous reports. The correlation between pharmacokinetics and Ac-K in peripheral blood CD19+ B cells, and also T-cell activation markers, merits further investigation. Trial registration JAPIC Clinical Trial Information, JapicCTI-153066. Registered 12 November 2015. ClinicalTrials.gov, NCT02623751. Registered 8 December 2015. Supplementary Information The online version contains supplementary material available at 10.1186/s12885-021-08973-4.
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Affiliation(s)
- Norikazu Masuda
- Department of Surgery, Breast Oncology, National Hospital Organization Osaka National Hospital, Osaka, Japan. .,Present address: Department of Breast and Endocrine Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, 466-8550, Japan.
| | - Kenji Tamura
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan.,Present address: Department of Medical Oncology, Shimane University Hospital, Izumo, Shimane, Japan
| | - Hiroyuki Yasojima
- Department of Surgery, Breast Oncology, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Akihiko Shimomura
- Department of Breast and Medical Oncology, National Cancer Center Hospital, Tokyo, Japan.,Present address: Department of Breast and Medical Oncology, National Center for Global Health and Medicine, Tokyo, Japan
| | - Masataka Sawaki
- Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, Japan
| | - Min-Jung Lee
- Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Akira Yuno
- Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.,Present address: Department of Oral and Maxillofacial Surgery, Kumamoto University Hospital, Kumamoto, Japan
| | - Jane Trepel
- Developmental Therapeutics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Ryoko Kimura
- R&D Division, Kyowa Kirin Co., Ltd., Tokyo, Japan
| | | | - Shigehira Saji
- Department of Medical Oncology, Fukushima Medical University, Fukushima, Japan
| | - Hiroji Iwata
- Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, Aichi, Japan
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Sugita K, Ikeda A, Kimura R, Yamamoto O. Novel Ultrastructural Findings of Blastic Plasmacytoid Dendritic Cell Neoplasm. Indian J Dermatol 2021; 66:195-196. [PMID: 34188278 PMCID: PMC8208246 DOI: 10.4103/ijd.ijd_57_20] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Affiliation(s)
- Kazunari Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan. E-mail:
| | - Ayano Ikeda
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan. E-mail:
| | - Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan. E-mail:
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan. E-mail:
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Kimura R, Sugita K, Yamamoto O. Isolated elastoma of the eyelid: dermoscopic features of an unusual entity. Eur J Dermatol 2020; 30:ejd.2020.3727. [PMID: 32319939 DOI: 10.1684/ejd.2020.3727] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2024]
Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
| | - Kazunari Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
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Kimura R, Yamada N, Yoshida Y, Ito A, Horie T, Anzawa K, Mochizuki T, Yamamoto O. Recurrent Phaeohyphomycosis due to Phaeoacremonium alvesii Identified with Internal Transcribed Spacer and Beta-tubulin Gene Sequencing. Acta Derm Venereol 2020; 100:adv00046. [PMID: 31930424 PMCID: PMC9128991 DOI: 10.2340/00015555-3395] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan, 36-1 Nishicho, Yonago 683-8504, Japan.
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Sugita K, Altunbulakli C, Morita H, Sugita A, Kubo T, Kimura R, Goto H, Yamamoto O, Rückert B, Akdis M, Akdis CA. Human type 2 innate lymphoid cells disrupt skin keratinocyte tight junction barrier by IL-13. Allergy 2019; 74:2534-2537. [PMID: 31166013 DOI: 10.1111/all.13935] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Kazunari Sugita
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine Tottori University Yonago Japan
| | - Can Altunbulakli
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
| | - Hideaki Morita
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
- Department of Allergy and Clinical Immunology National Research Institute for Child Health and Development Tokyo Japan
| | - Atsuko Sugita
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
| | - Terufumi Kubo
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
| | - Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine Tottori University Yonago Japan
| | - Hiroyuki Goto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine Tottori University Yonago Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine Tottori University Yonago Japan
| | - Beate Rückert
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
| | - Mübeccel Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
| | - Cezmi A. Akdis
- Swiss Institute of Allergy and Asthma Research (SIAF) University of Zurich Davos Switzerland
- Christine Kühne‐Center for Allergy Research and Education Davos Switzerland
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Ito A, Yamada N, Kimura R, Anzawa K, Mochizuki T, Yamamoto O. Tinea Barbae due to Trichophyton mentagrophytes Contracted from Calves. Acta Derm Venereol 2019; 99:925-926. [PMID: 31240324 DOI: 10.2340/00015555-3247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Ayako Ito
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, 86 Nishi-cho, Yonago, 683-8503, Japan.
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11
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A Masengi KW, Mandagi IF, Manu L, Silooy F, Labaro IL, Masengi AWR, Sebua N, Masengi EIKG, Pinontoan B, Hutabarat Y, Hukom F, Iwata M, Abe Y, Sato Y, Kimura R, Yamahira K. Study on existence of the fisheries resources abundance by using environmental deoxyribonucleic acid (e-DNA) approach at fishing grounds in the Sulawesi Sea, Indonesia. ACTA ACUST UNITED AC 2019. [DOI: 10.1088/1757-899x/567/1/012026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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12
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Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan.
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Abstract
We present an unusual case of cystic pilomatricoma. A 13-year-old Japanese boy was referred to our department for evaluation of a 10-day history of a small reddish nodule on his right cheek. Histopathological examination showed a well-circumscribed cystic structure showing a central empty cavity in the dermis. The wall of the cyst was composed of basophilic cells. Inner layers of the wall were covered with flattened epithelial cells having trichohyalin granules. Based on these findings, a diagnosis of cystic pilomatricoma was made. To our knowledge, there has been no report of cystic pilomatricoma with an empty cavity. Dermatologists should be aware of pilomatricoma in the early stage showing a central empty cavity.
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Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
| | - Kazunari Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
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14
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Kimura R, Sugita K, Goto H, Yamamoto O. A small nodule on the auricle. Clin Exp Dermatol 2018; 44:203-205. [PMID: 29851135 DOI: 10.1111/ced.13636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2018] [Indexed: 11/27/2022]
Affiliation(s)
- R Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University, Faculty of Medicine, Yonago, Japan
| | - K Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University, Faculty of Medicine, Yonago, Japan
| | - H Goto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University, Faculty of Medicine, Yonago, Japan
| | - O Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University, Faculty of Medicine, Yonago, Japan
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15
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Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
| | - Kazunari Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
| | - Hiroyuki Goto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8504, Japan
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16
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Kimura R, Sugita K, Ito A, Goto H, Yamamoto O. Basophils are recruited and localized at the site of tick bites in humans. J Cutan Pathol 2017; 44:1091-1093. [DOI: 10.1111/cup.13045] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2017] [Revised: 09/08/2017] [Accepted: 09/11/2017] [Indexed: 12/30/2022]
Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs; Tottori University Faculty of Medicine; Yonago Japan
| | - Kazunari Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs; Tottori University Faculty of Medicine; Yonago Japan
| | - Ayako Ito
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs; Tottori University Faculty of Medicine; Yonago Japan
| | - Hiroyuki Goto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs; Tottori University Faculty of Medicine; Yonago Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs; Tottori University Faculty of Medicine; Yonago Japan
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17
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Ito A, Yamada N, Kimura R, Tanaka N, Kurai J, Anzawa K, Mochizuki T, Yamamoto O. Concurrent Double Fungal Infections of the Skin Caused by Phialemoniopsis endophytica and Exophiala jeanselmei in a Patient with Microscopic Polyangiitis. Acta Derm Venereol 2017; 97:1142-1144. [PMID: 28654130 DOI: 10.2340/00015555-2734] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
is missing (Short communication).
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Affiliation(s)
- Ayako Ito
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, 683-8503 Yonago, Japan. ,
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18
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Kimura R, Yoshida Y, Sugita K, Shiomi T, Yamamoto O. Cutaneous squamous cell carcinoma with multiple metastases in a patient with chronic gluteal pyoderma. Australas J Dermatol 2017. [PMID: 28639265 DOI: 10.1111/ajd.12642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Yuichi Yoshida
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Kazunari Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Tatsushi Shiomi
- Department of Organ Pathology, Faculty of Medicine, Tottori University, Tottori, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Tottori, Japan
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Kimura R, Yoshida Y, Wakumoto K, Yamada N, Yamamoto O. Successful treatment of tufted angioma with low-dose electron beam radiation therapy: Report of two cases. J Dermatol 2017. [PMID: 28623854 DOI: 10.1111/1346-8138.13936] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Yuichi Yoshida
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Keiko Wakumoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Nanako Yamada
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
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Abstract
Legius syndrome is a rare genetic disorder caused by heterozygous germ line loss-of-function SPRED1 mutation. In Japan, a family with Legius syndrome was first described in 2015 by Sakai et al. We described a first solitary case of Legius syndrome identified by next-generation sequencing in Japan. A 37-year-old woman presented with multiple café-au-lait macules and freckles but has no other features of neurofibromatosis type 1 (NF-1). Sequencing results showed the presence of a mutation in exon 2 of SPRED1 c.70C>T, resulting in the protein at position 24 (p.Arg24X). When a dermatological clinician sees an adult patient showing only pigmented lesions and no other specifically diagnostic features of NF-1, it is important to suspect the possibility of Legius syndrome.
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Affiliation(s)
- Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan
| | - Yuichi Yoshida
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan
| | - Ryo Maruoka
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Kenjiro Kosaki
- Center for Medical Genetics, Keio University School of Medicine, Tokyo, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Tottori University Faculty of Medicine, Yonago, Japan
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Nishimoto T, Kimura R, Matsumoto A, Sugimoto H. Streptozotocin induces neurite outgrowth via PI3K-Akt and glycogen synthase kinase 3β in Neuro2a cells. Cell Mol Biol (Noisy-le-grand) 2016; 62:74-78. [PMID: 27894404 DOI: 10.14715/cmb/2016.62.12.13] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 11/26/2016] [Indexed: 06/06/2023]
Abstract
Streptozotocin (STZ), a naturally occurring chemical, is toxic to the various kinds of cells such as insulin-producing beta cells. However, the beneficial effect of STZ on neuronal cells such as neurite outgrowth-inducing activity has been unknown. In this study, we examined the effect of STZ on neurite outgrowth in mouse neuronal Neuro2a cells. STZ (0.01 mM~5 mM) exerted remarkable neurite outgrowth-inducing activity in Neuro2a cells in a concentration dependent manner. STZ also had the same neurite outgrowth-inducing activity as that of retinoic acid (RA), which is well known neurite outgrowth inducer. As with the result of RA treatment, STZ administration increased MAP2-positive cells. The MAP2-positive cells reflect neurite outgrowth-induced cells. STZ (0.01 mM~5 mM) did not induce cell death, but significantly decreased cell proliferation. The serine/threonine kinase Akt, a downstream target of phosphatidylinositol-3 kinase (PI3K), was transiently phosphorylated at Ser473 and at Thr303 by STZ (5 mM) administration. Glycogen synthase kinase 3β (GSK3β), which has been reported to be inactivated by Akt, was also transiently phosphorylated at Ser9 by STZ (5 mM) administration. In addition, a blocker of PI3K, LY294002 (10 μM), significantly attenuated STZ-induced neurite outgrowth. These results suggest that STZ induces neurite outgrowth via activation of PI3K-Akt signaling pathway and GSK3β inhibition.
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Affiliation(s)
- T Nishimoto
- Department of Immunology, Kawasaki Medical School, Okayama, 701-0192, Japan.
| | - R Kimura
- Arts and Sciences, Faculty of Engineering, Tokyo University of Science, Yamaguchi, 756-0884, Japan
| | - A Matsumoto
- Faculty of Life and Medical Sciences, Doshisha University, Kyoto, 610-0394, Japan
| | - H Sugimoto
- Nervous Disease Research Center, Graduate School of Brain Science, Doshisha University, Kyoto, 610-0394, Japan
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Suzuki S, Yoshida Y, Shiomi T, Yanagihara S, Kimura R, Yamamoto O. Melanoma of the Umbilicus: A Patient Report, Precaution in Operative Strategy, and the First Histopathological Review of Published Cases. Yonago Acta Med 2016; 59:183-187. [PMID: 27493491 PMCID: PMC4973026] [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: 03/08/2016] [Accepted: 04/06/2016] [Indexed: 06/06/2023]
Abstract
Umbilical melanoma is extremely rare. Among the past English reports on umbilical melanoma, there are only 8 reports in which histopathology was described in detail, and there has been no report with a review of the histopathology of previously reported cases. We experienced a case of umbilical melanoma and reviewed previously reported cases including our case. Because of the anatomical location, it is difficult to become aware of the umbilical melanoma unless there are some concomitant symptoms such as discharge or swelling. Even with these symptoms, patients tend to postpone a hospital visit for unknown reasons, resulting in increased risk of tumor growth and metastasis. When performing resection of umbilical melanoma, a portion of the peritoneum should also be removed. Sentinel lymph nodes can be axilla or inguinal lymph nodes. There is a possibility of metastasis to the preoperative abdominal cavity or to nearby skin through hematogenous spread. Preoperative evaluation of tumor spread and postoperative observation are important for umbilical melanoma in order to detect recurrence or metastasis because of its unique anatomical location.
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Affiliation(s)
- Shuji Suzuki
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan
| | - Yuichi Yoshida
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan
| | - Tatsushi Shiomi
- †Division of Organ Pathology, Department of Pathology, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan
| | - Shigeto Yanagihara
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan
| | - Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, School of Medicine, Tottori University Faculty of Medicine, Yonago 683-8503, Japan
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Kimura R, MacTavish D, Yang J, Westaway D, Jhamandas JH. Pramlintide Antagonizes Beta Amyloid (Aβ)- and Human Amylin-Induced Depression of Hippocampal Long-Term Potentiation. Mol Neurobiol 2016; 54:748-754. [PMID: 26768593 DOI: 10.1007/s12035-016-9684-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [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: 09/24/2015] [Accepted: 01/05/2016] [Indexed: 02/02/2023]
Abstract
Accumulation of amyloid-β peptide (Aβ) is a pathological hallmark of Alzheimer's disease (AD). We have previously demonstrated that electrophysiological and neurotoxic effects of Aβ and human amylin are expressed via the amylin receptor. Recently, pramlintide, a synthetic analog of amylin, has been reported to improve cognitive function in transgenic AD mouse models. In this study, we examined the effects of pramlintide on Aβ1-42 and human amylin-evoked depression of long-term potentiation (LTP) at Schaeffer collateral-CA1 hippocampal synapses. In mouse hippocampal brain slices, field excitatory postsynaptic potentials (fEPSPs) were recorded from the stratum radiatum layer of the CA1 area in response to electrical stimulation of Schaeffer collateral afferents and LTP induced by 3-theta-burst stimulation (TBS) protocol. Aβ1-42 (50 nM) and human amylin (50 nM), but not Aβ42-1 (50 nM), depressed LTP. Pre-application of pramlintide (250 nM) blocked Aβ- and human amylin-induced reduction of LTP without affecting baseline transmission or LTP. We also examined the effects of pramlintide on LTP in transgenic mice (TgCRND8) that over-express amyloid precursor protein. In contrast to wild-type controls, where robust LTP was observed, 10- to 12-month-old TgCRND8 mice show blunted LTP. In TgCRND8 mice, basal LTP is enhanced by application of pramlintide. Our data indicate that pramlintide acts as a functional amylin receptor antagonist to reverse the effects of Aβ1-42 and human amylin on LTP and also increases LTP in transgenic mice that demonstrate increased ambient brain amyloid levels. Amylin receptor antagonists may thus serve as potentially useful therapeutic agents in treatment of AD.
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Affiliation(s)
- R Kimura
- Faculty of Engineering, Tokyo University of Science, Yamaguchi, Sanyo-onoda, Yamaguchi, Japan
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, T6G 2S2, Canada
| | - D MacTavish
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, T6G 2S2, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, T6G 2S2, Canada
| | - J Yang
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, T6G 2S2, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, T6G 2S2, Canada
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB, T6G 2S2, Canada
| | - D Westaway
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, T6G 2S2, Canada
- Department of Biochemistry, University of Alberta, Edmonton, AB, T6G 2S2, Canada
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, T6G 2S2, Canada
- Centre for Prions and Protein Folding Diseases, University of Alberta, Edmonton, AB, T6G 2S2, Canada
| | - Jack H Jhamandas
- Department of Medicine (Neurology), University of Alberta, Edmonton, AB, T6G 2S2, Canada.
- Neuroscience and Mental Health Institute, University of Alberta, Edmonton, AB, T6G 2S2, Canada.
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Suzuki S, Yoshida Y, Shiomi T, Yanagihara S, Ito A, Kimura R, Yamamoto O. Squamous cell carcinoma arising on plantar verrucous lesion. J Dermatol 2015; 42:1010-1. [PMID: 26109404 DOI: 10.1111/1346-8138.12992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shuji Suzuki
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Yuichi Yoshida
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Tatsushi Shiomi
- Department of Organ Pathology, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Shigeto Yanagihara
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Ayako Ito
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Ryoko Kimura
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - Osamu Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
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Ueki S, Niinomi K, Takashima Y, Kimura R, Komai K, Murakami K, Fujiwara C. Predictors of maternal state anxiety on arrival at a Japanese hospital outpatient clinic: a cross-sectional study. J Clin Nurs 2015; 24:2383-91. [PMID: 25706760 DOI: 10.1111/jocn.12788] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2014] [Indexed: 11/29/2022]
Abstract
AIMS AND OBJECTIVES To identify the factors that predict maternal state anxiety when mothers and their sick children visit the outpatient unit of a paediatric hospital. BACKGROUND While previous studies have focused on predictors of anxiety in mothers with ill children, the existing literature is limited in study design, research timing, respondent characteristics, sample size and data analysis. DESIGN A cross-sectional design with self-administered questionnaires. METHODS Mothers were recruited from the outpatient unit of a Japanese paediatric hospital (N = 1077). Participants' state anxiety scores were collected using the Japanese version of Spielberger's State-Trait Anxiety Inventory. The independent variables were the mothers' and sick children's background information. RESULTS Participants were 1077 mothers; 990 provided valid responses. Mothers' mean state anxiety score was 49·72. Significant predictors of maternal anxiety were mothers' childrearing anxiety, child age, the sick child having a fever, sick child having siblings, having a person providing childrearing support, the mother's first visit to the hospital, out-of-hours visit and severity of the child's illness. The overall model explained 21·6% of the variance (multiple regression analysis). CONCLUSIONS As various factors predicted maternal anxiety, identifying methods to address these factors may reduce maternal state anxiety. RELEVANCE TO CLINICAL PRACTICE There is potential for improved understanding of the predictors of maternal state anxiety to aid in the development of materials that would best measure anxiety. The present findings may also suggest some means of providing appropriate information and support to anxious mothers. Our findings cannot demonstrate causation, however, and teaching methods and supportive practices were not investigated; therefore, a qualitative study on the concrete content of maternal anxiety and an intervention study to create support services for anxious mothers is required. In addition, prospective or longitudinal studies are also important for investigating causation.
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Affiliation(s)
- Shingo Ueki
- Course of Health Science, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Kazuteru Niinomi
- Course of Health Science, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Yuko Takashima
- Course of Health Science, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Ryoko Kimura
- Toyonaka City Public Health Center, Osaka, Japan
| | | | | | - Chieko Fujiwara
- Course of Health Science, Graduate School of Medicine, Osaka University, Osaka, Japan
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Ueki S, Niinomi K, Takashima Y, Kimura R, Komai K, Murakami K, Fujiwara C. Effectiveness of aromatherapy in decreasing maternal anxiety for a sick child undergoing infusion in a paediatric clinic. Complement Ther Med 2014; 22:1019-26. [DOI: 10.1016/j.ctim.2014.09.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2013] [Revised: 06/25/2014] [Accepted: 09/21/2014] [Indexed: 01/08/2023] Open
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27
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Yamaguchi T, Nakaoka H, Yamamoto K, Fujikawa T, Kim Y, Yano K, Haga S, Katayama K, Shibusawa T, Park SB, Maki K, Kimura R, Inoue I. Genome‐wide association study of degenerative bony changes of the temporomandibular joint. Oral Dis 2013; 20:409-15. [DOI: 10.1111/odi.12141] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2013] [Revised: 05/07/2013] [Accepted: 05/18/2013] [Indexed: 01/05/2023]
Affiliation(s)
- T Yamaguchi
- Department of Orthodontics School of Dentistry Showa University TokyoJapan
| | - H Nakaoka
- Division of Human Genetics National Institute of Genetics ShizuokaJapan
| | - K Yamamoto
- Division of Genome Analysis Research Center for Genetic Information Medical Institute of Bioregulation Kyushu University Fukuoka Japan
| | - T Fujikawa
- Department of Orthodontics School of Dentistry Showa University TokyoJapan
| | - Y‐I Kim
- Department of Orthodontics Pusan National University Dental Hospital Yangsan Korea
| | - K Yano
- Verde Orthodontic Dental Clinic TokyoJapan
| | - S Haga
- Department of Orthodontics School of Dentistry Showa University TokyoJapan
| | - K Katayama
- Department of Orthodontics School of Dentistry Showa University TokyoJapan
| | - T Shibusawa
- Department of Orthodontics School of Dentistry Showa University TokyoJapan
| | - SB Park
- Department of Orthodontics Pusan National University Dental Hospital Yangsan Korea
| | - K Maki
- Department of Orthodontics School of Dentistry Showa University TokyoJapan
| | - R Kimura
- Faculty of Medicine University of the Ryukyus Okinawa Japan
| | - I Inoue
- Division of Human Genetics National Institute of Genetics ShizuokaJapan
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Katoh N, Suzuki R, Shimizu S, Inoue T, Yasuda K, Onimaru R, Kimura R, Kato M, Ishikawa M, Shirato H. Real-time Tumor-tracking Radiation Therapy for Lymphoma of the Stomach. Int J Radiat Oncol Biol Phys 2012. [DOI: 10.1016/j.ijrobp.2012.07.1932] [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: 11/15/2022]
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Dezengotita VM, Kimura R, Miller WM. Effects of CO2 and osmolality on hybridoma cells: growth, metabolism and monoclonal antibody production. Cytotechnology 2011; 28:213-27. [PMID: 19003422 DOI: 10.1023/a:1008010605287] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
CO2 partial pressure (pCO2) in industrial cell culture reactors may reach 150-200 mm Hg, which can significantly inhibit cell growth and recombinant protein production. Due to equilibrium with bicarbonate, increased pCO2 at constant pH results in a proportional increase in osmolality. Hybridoma AB2-143.2 cell growth rate decreased with increasing pCO2 in well-plate culture, with a 45% decrease at 195 mm Hg with partial osmolality compensation (to 361 mOsm kg- 1). Inhibition was more extensive without osmolality compensation, with a 63% decrease in growth rate at 195 mm Hg and 415 mOsm kg-1. Also, the hybridoma death rate increased with increasing pCO2, with 31- and 64-fold increases at 250 mm Hg pCO2 for 401 and 469 mOsm kg- 1, respectively. The specific glucose consumption and lactate production rates were 40-50% lower at 140 mm Hg pCO2. However, there was little further inhibition of glycolysis at higher pCO2. The specific antibody production rate was not significantly affected by pCO2 or osmolality within the range tested. Hybridomas were also exposed to elevated pCO2 in continuous culture. The viable cell density decreased by 25-40% at 140 mm Hg. In contrast to the well-plate cultures, the death rate was lower at the new steady state at 140 mm Hg. This was probably due to higher residual nutrient and lower byproduct levels at the lower cell density (at the same dilution rate), and was associated with increased cell-specific glucose and oxygen uptake. Thus, the apparent effects of pCO2 may vary with the culture system.
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Affiliation(s)
- V M Dezengotita
- Chemical Engineering Department, Northwestern University, Evanston, IL, 60208-3120, U.S.A
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Kurotobi T, Iwakura K, Inoue K, Kimura R, Toyoshima Y, Ito N, Mizuno H, Shimada Y, Fujii K, Nanto S, Komuro I. The significance of the shape of the left atrial roof as a novel index for determining the electrophysiological and structural characteristics in patients with atrial fibrillation. Europace 2011; 13:803-8. [DOI: 10.1093/europace/eur039] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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31
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Yamada Y, Yamada K, Nomura N, Yamano A, Kimura R, Tomida S, Naiki M, Wakamatsu N. Molecular analysis of two enzyme genes, HPRT1 and PRPS1, causing X-linked inborn errors of purine metabolism. Nucleosides Nucleotides Nucleic Acids 2010; 29:291-4. [PMID: 20544509 DOI: 10.1080/15257771003738691] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Inherited mutation of hypoxanthine guanine phosphoribosyltransferase (HPRT) gives rise to Lesch-Nyhan syndrome or HPRT-related gout. On the other hand, PRPS1 mutations cause PRPP synthetase superactivity associated with hyperuricemia and gout, sometimes including neurodevelopmental abnormalities. We have identified two mutations in two Lesch-Nyhan families after our last report. One of them, a new single nucleotide substitution (130G>T) resulting in a missense mutation D44Y was detected in exon 2 of HPRT1. RT-PCR amplification showed not only a cDNA fragment with normal size, but also a small amount of shorter fragment skipping exons 2 and 3. The other missense mutation F74L (222C > A) was detected in a Japanese patient but has been reported previously in European families. In four hyperuricemic patients with mild neurological abnormality, no mutations responsible for partial HPRT deficiency were identified in HPRT1. In these four patients, we also performed molecular analysis of PRPS1, but no mutations in PRPP synthetase were found.
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Affiliation(s)
- Y Yamada
- Department of Genetics, Institute for Developmental Research, Aichi Human Service Center, Kasugai, Aichi, Japan.
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Kurotobi T, Iwakura K, Inoue K, Kimura R, Okamura A, Koyama Y, Toyoshima Y, Ito N, Fujii K. A pre-existent elevated C-reactive protein is associated with the recurrence of atrial tachyarrhythmias after catheter ablation in patients with atrial fibrillation. Europace 2010; 12:1213-8. [DOI: 10.1093/europace/euq155] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Kimura R, Okouchi M, Fujioka H, Ichiyanagi A, Ryuge F, Mizuno T, Imaeda K, Okayama N, Kamiya Y, Asai K, Joh T. Glucagon-like peptide-1 (GLP-1) protects against methylglyoxal-induced PC12 cell apoptosis through the PI3K/Akt/mTOR/GCLc/redox signaling pathway. Neuroscience 2009; 162:1212-9. [PMID: 19463904 DOI: 10.1016/j.neuroscience.2009.05.025] [Citation(s) in RCA: 96] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2009] [Revised: 05/07/2009] [Accepted: 05/14/2009] [Indexed: 12/31/2022]
Abstract
Patients with long-standing diabetes commonly develop diabetic encephalopathy, which is characterized by cognitive impairment and dementia. Oxidative stress-induced neuronal cell apoptosis is a contributing factor. Glucagon-like peptide (GLP)-1 has recently become an attractive treatment modality for patients with diabetes. It also readily enters the brain, prevents neuronal cell apoptosis, and improves the cognitive impairment characteristic of Alzheimer's disease. Therefore, we investigated whether GLP-1 could protect against oxidative stress-induced neuronal cell apoptosis in pheochromocytoma (PC12) cells. PC12 cells were exposed to 1 mM methylglyoxal (MG) or MG plus 3.30 microg/ml GLP-1. Cell apoptosis, expression and phosphorylation of phosphatidylinositol-3 kinase/Akt/mammalian target of rapamycin/gamma-glutamylcysteine ligase catalytic subunit (GCLc), and redox balance were then determined. The data showed that MG induced PC12 apoptosis in accordance with the redox (glutathione (GSH) and GSH/glutathione disulfide [GSSG]) imbalance. GLP-1 protected against this MG-induced apoptosis, which corresponded to the phosphorylation of PI3K, Akt, and mTOR, as well as the upregulation of GCLc and the restoration of the redox imbalance. Inhibitors of PI3K (LY294002), Akt (Akt-I), and mTOR (rapamycin) reduced the GLP-1-induced GCLc upregulation and its protection against MG-induced PC12 apoptosis. The GLP-1-induced redox restoration was also attenuated by rapamycin. In conclusion, the neuroprotective effect of GLP-1 is due to an enhancement of PI3K/Akt/mTOR/GCLc/redox signaling.
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Affiliation(s)
- R Kimura
- Department of Gastroenterology and Metabolism, Nagoya City University Graduate School of Medical Sciences, 1 Kawasumi, Mizuho-cho, Mizuho-ku, Nagoya 467-8601, Japan.
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34
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Futamura M, Goto S, Kimura R, Kimoto I, Miyake M, Ito K, Sakamoto T. Differential effects of topically applied formalin and aromatic compounds on neurogenic-mediated microvascular leakage in rat skin. Toxicology 2009; 255:100-6. [DOI: 10.1016/j.tox.2008.10.012] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2008] [Revised: 10/21/2008] [Accepted: 10/21/2008] [Indexed: 10/21/2022]
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35
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Nuchnoi P, Ohashi J, Kimura R, Hananantachai H, Naka I, Krudsood S, Looareesuwan S, Tokunaga K, Patarapotikul J. Significant Association Between TIM1 Promoter Polymorphisms and Protection Against Cerebral Malaria in Thailand. Ann Hum Genet 2008; 72:327-36. [DOI: 10.1111/j.1469-1809.2007.00424.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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Kudo T, Kanemoto S, Hara H, Morimoto N, Morihara T, Kimura R, Tabira T, Imaizumi K, Takeda M. A molecular chaperone inducer protects neurons from ER stress. Cell Death Differ 2007; 15:364-75. [PMID: 18049481 DOI: 10.1038/sj.cdd.4402276] [Citation(s) in RCA: 202] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
The endoplasmic reticulum (ER) stress response is a defense system for dealing with the accumulation of unfolded proteins in the ER lumen. Recent reports have shown that ER stress is involved in the pathology of some neurodegenerative diseases and cerebral ischemia. In a screen for compounds that induce the ER-mediated chaperone BiP (immunoglobulin heavy-chain binding protein)/GRP78 (78 kDa glucose-regulated protein), we identified BiP inducer X (BIX). BIX preferentially induced BiP with slight inductions of GRP94 (94 kDa glucose-regulated protein), calreticulin, and C/EBP homologous protein. The induction of BiP mRNA by BIX was mediated by activation of ER stress response elements upstream of the BiP gene, through the ATF6 (activating transcription factor 6) pathway. Pretreatment of neuroblastoma cells with BIX reduced cell death induced by ER stress. Intracerebroventricular pretreatment with BIX reduced the area of infarction due to focal cerebral ischemia in mice. In the penumbra of BIX-treated mice, ER stress-induced apoptosis was suppressed, leading to a reduction in the number of apoptotic cells. Considering these results together, it appears that BIX induces BiP to prevent neuronal death by ER stress, suggesting that it may be a potential therapeutic agent for cerebral diseases caused by ER stress.
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Affiliation(s)
- T Kudo
- Psychiatry, Department of Integrated Medicine, Division of Internal Medicine, Osaka University Graduate School of Medicine, Suita, Japan.
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Affiliation(s)
- R Kimura
- Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
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38
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Ishikawa J, Sato Y, Takeshita S, Kokame K, Kimura R, Honda S, Kawasaki T, Suehisa E, Tsuji H, Madoiwa S, Sakata Y, Kojima T, Murata M, Ikeda Y, Miyata T. ONE-THIRD OF JAPANESE PATIENTS WITH DEEP VEIN THROMBOSIS CARRIED THE GENETIC MUTATIONS IN PROTEINS S, C AND ANTITHROMBIN GENES: THE SUB-GROUP STUDY OF BLOOD COAGULATION ABNORMALITY, THE STUDY GROUP OF RESEARCH ON MEASURES FOR INTRACTABLE DISEASES IN JAPAN. J Thromb Haemost 2007. [DOI: 10.1111/j.1538-7836.2007.tb02201.x] [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: 11/30/2022]
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39
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Sakamoto T, Miyake M, Kimura R, Morii S, Ito K. Exaggerated Neurogenic and Allergic Inflammation in the Skin of Rats Treated with Systemically Administered Indomethacin. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.12.436] [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: 11/28/2022]
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40
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Muto T, Morii S, Kimura R, Futamura M, Ito K, Sakamoto T. Increased Prevalence of Vitamin D Deficiency Rickets Due to Inadequate Dietary Restrictions for the Treatment for Allergic Diseases. J Allergy Clin Immunol 2007. [DOI: 10.1016/j.jaci.2006.11.442] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Kimura R, Sakata T, Kokubo Y, Okamoto A, Okayama A, Tomoike H, Miyata T. Plasma protein S activity correlates with protein S genotype but is not sensitive to identify K196E mutant carriers. J Thromb Haemost 2006; 4:2010-3. [PMID: 16961608 DOI: 10.1111/j.1538-7836.2006.02071.x] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Protein S (PS) is an anticoagulant protein that functions as a cofactor for activated protein C (APC), and congenital PS deficiency is a well-known risk factor for the development of deep vein thrombosis (DVT). Recently, we and others identified the K196E missense mutation in the second epidermal growth factor-like domain of PS as a genetic risk factor for DVT in the Japanese population. The incidence of this mutation is high in the Japanese population. OBJECTIVES In the present study, we investigated the relationship between plasma PS activity and the presence of the K196E mutation. PATIENTS AND METHODS We measured PS activity as a cofactor activity for APC in 1,862 Japanese individuals and determined the PS K196E genotype in this population. RESULTS Individuals heterozygous for the mutant E-allele had lower plasma PS activity than wildtype subjects (mean +/- SD, 71.9 +/- 17.6%, n = 34 vs. 87.9 +/- 19.8%, n = 1,828, P < 0.0001). However, the PS activity of several heterozygous individuals (n = 8) was greater than the population average. In contrast, multiple wildtype subjects (n = 26) had PS activity less than 2 SD below the population mean, indicating that other genetic or environmental factors affect PS activity. CONCLUSIONS Plasma PS activity itself is not suitable for identifying PS 196E carriers and other methods are required for carrier detection.
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Affiliation(s)
- R Kimura
- Research Institute, National Cardiovascular Center, Suita, Osaka, Japan
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43
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Kimura R, Nishino K. Visualization and the tacit knowledge. J Vis (Tokyo) 2005. [DOI: 10.1007/bf03181490] [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: 11/29/2022]
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Nakase H, Shin Y, Nakagawa I, Kimura R, Sakaki T. Clinical features of postoperative cerebral venous infarction. Acta Neurochir (Wien) 2005; 147:621-6; discussion 626. [PMID: 15770350 DOI: 10.1007/s00701-005-0501-y] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2004] [Accepted: 01/14/2005] [Indexed: 11/30/2022]
Abstract
There is a potential risk of sacrificing the cortical vein during neurosurgical operations, particularly in the interhemispheric or subtemporal approach. An impaired cortical vein might cause cerebral venous circulatory disturbances (CVCDs) resulting in venous infarction. In this article, we have reviewed the management and results of eight cases with symptomatic postoperative venous infarction. We have encountered eight cases with symptomatic postoperative venous infarction (0.3%) during the past 5 years. The series is composed of 3 males and 5 females, with ages that ranged from 43 to 76 years (mean age of 58.1 years), and consisted of five brain tumors, one cavernoma, one dural AVF, and one trigeminal neuralgia. Initial symptoms occurred intra-operatively in two, on 0 day after the operation in one, 1 day in three, 3 days in one, and 4 days in one case. The symptoms were intra-operative brain edema in two cases, disorientation in one, cerebellar signs in one, hemiparesis in one, aphasia in two, and headache in one case. Two cases required surgical intervention. The results were a good outcome in 6 and a fair outcome in 2 cases. In conclusion, there are two types of postoperative venous infarction; severe onset (severe type) and gradual onset (mild type). The former needs immediate treatment from the intra-operative period onward, and the prevention of the ongoing venous thrombosis is essential in the latter.
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Affiliation(s)
- H Nakase
- Department of Neurosurgery, Nara Medical University, Kashihara, Nara, Japan.
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Abstract
Background and Purpose—
Cerebral venous ischemia often induces severe brain edema. Vascular endothelial growth factor (VEGF), which induces angiogenesis, is also known as vascular permeability (VP) factor. The present study was undertaken to investigate whether the inhibition of VEGF could reduce brain edema formation and cerebral venous infarction (CVI) in a rat 2-vein occlusion (2-VO) model.
Methods—
We used 2-VO model in which 2 adjacent cortical veins were photochemically occluded. Male Wistar rats (n=25) were divided into 2 groups: one group was treated with a VEGF antagonist (antagonist group, n=10) and the second group was treated with phosphate-buffered solution (PBS) (PBS group, n=15). VEGF antagonist or PBS was injected intraperitoneally immediately after 2-VO. The developing ischemic infarct was evaluated by magnetic resonance imaging (MRI) and histology 24 hours after occlusion.
Results—
VEGF expression was observed in the cytoplasm of neurons exclusively in the area of vasogenic edema that was shown as a high-intensity area in the apparent diffusion coefficient of water map. Ischemic volumes calculated from each MR images, which are related to infarction and/or vasogenic edema, respectively, were significantly smaller in the antagonist group as compared with the PBS group (
P
<0.05)
Conclusions—
Our study is the first to provide evidence that the inhibition of VEGF attenuates VP and reduces CVI in the acute stage. Although VEGF is a significant angiogenesis factor, we concluded that the inhibition of VEGF might be a new therapy for both brain edema formation and CVI.
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Affiliation(s)
- R Kimura
- Department of Neurosurgery, Nara Medical University, Kashihara, 634, Nara, Japan.
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Seitz R, Karg A, Becker D, Kimura R, Heimann A, Horstick G, Kempski O, Schreiber WG. First-Pass MRT-Perfusionsmessung am Rattenherz in vivo mit einem 1.5 Tesla-Ganzkörper-Tomographen. ROFO-FORTSCHR RONTG 2005. [DOI: 10.1055/s-2005-868308] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Abstract
Since the effect of IL1B polymorphisms on IL-1beta production is still controversial, we selected two polymorphisms to test their cis-acting effect on IL-1beta mRNA expression by means of the allele-specific transcript quantification and the haplotype analysis. As for the C-31T polymorphism, we found that expression of the -31T allele was 2.2 times of the -31C allele. This higher transcription efficiency may correspond to the fact that C-31T is located in a TATA box. The other polymorphism, C+3954T, did not alter the levels of transcription. The use of the allele-specific transcript quantification enables us to exclude trans-acting effects of polymorphisms on the gene expression and contributes to understanding the roles of the IL1B polymorphisms in susceptibility to multifactorial diseases.
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Affiliation(s)
- R Kimura
- Unit of Human Biology and Genetics, Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Bunkyo-ku, Tokyo, Japan
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Abstract
Syringomyelia is generally associated with Chiari type malformations, spinal tumors, or spinal trauma. Cervical spondylosis is only rarely involved. We here present a case of a 64-year-old woman with severe radicular pain in the right arm and the syringomyelic syndrome. Lateral radiographs of the cervical spine demonstrated spondylotic change at the C4/5 and C6/7 levels, and instability at C4/5. Dynamic magnetic resonance (MR) imaging revealed the spinal cord to be compressed at C5 and C6 with the body in extension, and the syrinx extended from C2 to the Th3 level on sagittal images. It was reduced remarkably after anterior decompression and stabilization at C4/5 and C6/7, and her symptoms also improved after surgery. We concluded that the syrinx in this case might have developed due to craniospinal pressure dissociation caused by intermittent spinal cord compression.
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Affiliation(s)
- R Kimura
- Department of Neurosurgery, Nara Medical University, Nara, Japan.
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Kimura R, Nishioka T, Ishida T. The SDF1-G801A polymorphism is not associated with SDF1 gene expression in Epstein-Barr virus-transformed lymphoblastoid cells. Genes Immun 2003; 4:356-61. [PMID: 12847551 DOI: 10.1038/sj.gene.6363978] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [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: 11/09/2022]
Abstract
The effects of the SDF1-3'A on AIDS progression have been attributed to the altered amount of stromal cell-derived factor 1 (SDF-1). However, the contribution of the SDF1-G801A polymorphism to SDF-1 expression is still unclear. In contrast to fresh peripheral blood mononuclear cells (PBMCs), Epstein-Barr virus (EBV)-transformed lymphoblastoid cell lines (LCLs) express the SDF-1 mRNA. Using EBV-transformed LCLs from 42 individuals with different genotypes, we investigated the SDF-1 mRNA levels and methylation status in the SDF1 gene. Both in PBMCs and in EBV-transformed LCLs, CpG dinucleotides in the 5' region of the SDF1 gene were unmethylated. As for the 3' untranslated region (3'UTR), by contrast, CpG dinucleotides were methylated in PBMCs, whereas site-specific demethylation around the polymorphic site was detected in EBV-transformed LCLs. The levels of the demethylation were correlated with the SDF-1 mRNA levels. However, the genotype for the SDF1-G801A polymorphism did not significantly alter the SDF-1 mRNA levels. The allele preferences in transcription and methylation were also absent in the heterozygous cells. In conclusion, this study suggested a contribution of site-specific demethylation in the 3'UTR to the SDF1 gene expression, but did not show any evidence for the contribution of the SDF1-G801A polymorphism to the amount of the SDF-1 mRNA.
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Affiliation(s)
- R Kimura
- Unit of Human Biology and Genetics, Department of Biological Sciences, School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan
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