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Mai S, Izumi K, Mai Y, Natsuga K, Ishii N, Sawamura D, Schauer F, Kiritsi D, Nishie W, Ujiie H. Native autoantigen complex detects pemphigoid autoantibodies. JID Innovations 2023; 3:100193. [PMID: 36992950 PMCID: PMC10041560 DOI: 10.1016/j.xjidi.2023.100193] [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: 07/22/2022] [Revised: 01/18/2023] [Accepted: 01/19/2023] [Indexed: 02/22/2023] Open
Abstract
Pemphigoid diseases are a group of autoimmune disorders characterized by subepidermal blistering in the skin and mucosa. Among them, mucous membrane pemphigoid (MMP) autoantibodies are characterized by targeting multiple molecules in the hemidesmosomes, including collagen XVII, laminin-332, and integrin a6/β4. Traditionally, recombinant proteins of the autoantigens have been employed to identify circulating autoantibodies by immune assays. However, developing an efficient detection system for MMP autoantibodies has been challenging because the autoantibodies have heterogeneous profiles and the antibody titers are typically low. In this study, we introduce an ELISA that takes advantage of a native autoantigen complex rather than simple recombinant proteins. We generated HaCaT keratinocytes with a DDDDK-tag knocked in at the COL17A1 locus by CRISPR/Cas9-mediated gene editing. Immunoprecipitation using the DDDDK-tag isolated a native complex that contained full-length and processed collagen XVII and integrin α6/β4. Then, we used the complex proteins to prepare an ELISA system and enrolled 55 MMP cases to validate its diagnostic performance. The sensitivity and specificity of the ELISA for detecting MMP autoantibodies were 70.9% and 86.7%, respectively, far superior to those of conventional assays. In autoimmune diseases such as MMP, in which autoantibodies target various molecules, isolating the antigen-protein complexes can help establish a diagnostic system.
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Ohta T, Nagashima J, Fukuda W, Sasai H, Ishii N. Association of Knee Extensor Muscle Strength and Cardiorespiratory Fitness With Bone Stiffness in Japanese Adults: A Cross-sectional Study. J Epidemiol 2022; 32:543-550. [PMID: 33840650 PMCID: PMC9643791 DOI: 10.2188/jea.je20200581] [Citation(s) in RCA: 2] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Knee extensor muscle strength and cardiorespiratory fitness (CRF) are major components of physical fitness. Because the interactive association of knee extensor muscle strength and CRF with bone health remains unclear, we aimed to investigate such association in Japanese adults. METHODS Altogether, 8,829 Japanese adults (3,731 men and 5,098 women) aged ≥45 years completed the maximum voluntary knee extension test, submaximal exercise test, medical examination, and a questionnaire on lifestyle habits. Using an osteo-sono assessment index, low bone stiffness tendency was defined as 80% under the young-adults mean. Multivariable odds ratios (ORs) and 95% confidence intervals (CIs) were calculated after confounder adjustment. RESULTS Overall, 542 men (14.5%) and 978 women (19.2%) had low bone stiffness tendency. We observed an inverse association between muscle strength and low bone stiffness tendency after adjustment for CRF in both sexes (P for linear trend <0.001). Compared with the lowest CRF, the multivariable ORs for low bone stiffness tendency in the highest CRF were 0.47 (95% CI, 0.36-0.62) for men and 1.05 (95% CI, 0.82-1.35) for post-menopausal women (P < 0.001 and P = 0.704, respectively). No interactive association between muscle strength and CRF for low bone stiffness tendency existed in both sexes and irrespective of menopausal status. CONCLUSION Knee extensor muscle strength and CRF were associated additively, not synergistically, with bone health. Maintaining high levels of both physical fitness components may improve musculoskeletal health in the cohort. The relationship between physical fitness and bone status should be longitudinally investigated in the future.
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Affiliation(s)
- Takahisa Ohta
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan,Yokohama Sports Medical Center, Nissan Stadium, Kanagawa, Japan,Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Junzo Nagashima
- Yokohama Sports Medical Center, Nissan Stadium, Kanagawa, Japan,Division of Cardiology, Department of Internal Medicine, St. Marianna University School of Medicine, Kanagawa, Japan
| | - Wataru Fukuda
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan,Yokohama Sports Medical Center, Nissan Stadium, Kanagawa, Japan,Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Hiroyuki Sasai
- Research Team for Promoting Independence and Mental Health, Tokyo Metropolitan Institute of Gerontology, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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Yamada-Yanagawa A, Sasagawa S, Nakazawa K, Ishii N. Effects of Occasional and Habitual Wearing of High-Heeled Shoes on Static Balance in Young Women. Front Sports Act Living 2022; 4:760991. [PMID: 35434618 PMCID: PMC9006774 DOI: 10.3389/fspor.2022.760991] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 03/07/2022] [Indexed: 11/13/2022] Open
Abstract
The purpose of this study was to examine the effects of occasional and habitual wearing of high-heeled shoes on static balance in young women. Groups of habitual high-heel wearers and non-wearers (n = 7 in both groups) were asked to stand quietly on a force platform without shoes (WS condition) or with high heels (heel area 1 cm2, heel height 7 cm) (HH condition). During the trials, the center-of-pressure (CoP) position in the anterior-posterior direction was measured, and its root mean square (as a measure of postural sway magnitude, CoPRMS) and mean velocity (as a measure of regulatory activity, CoPMV) were calculated. To further examine the effect of high-heel wearing on the temporal aspects of slow and fast processes in static balance, the CoP sway was decomposed into low- (below 0.5 Hz) and high- (above 0.5 Hz) frequency components, and then spectral analysis was performed. Results showed that the CoPRMS was not significantly different between the groups or between the shoe conditions, indicating that wearing high heels with a heel height of 7 cm did not increase the magnitude of postural sway, irrespective of high-heel experience. The CoPMV was significantly larger in the HH condition than in the WS condition, whereas it was not significantly different between the groups. This result indicates that wearing high heels increased the amount of regulatory activity in both habitual wearers and non-wearers. The spectral analysis further showed that habitual high-heel wearers showed significantly decreased rate of regulatory activity than non-wearers, both while standing with and without high heels. These results suggest that use-dependent changes in static balance control are evident in both high-heeled and without shoes conditions.
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Affiliation(s)
- Ayano Yamada-Yanagawa
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Shun Sasagawa
- Department of Human Sciences, Kanagawa University, Yokohama, Japan
- *Correspondence: Shun Sasagawa
| | - Kimitaka Nakazawa
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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Takeuchi S, Takeichi T, Koike Y, Takama H, Tanahashi K, Okuno Y, Ishii N, Muro Y, Ogi T, Suga Y, Akiyama M. Mutations in SAM syndrome and palmoplantar keratoderma patients suggest genotype/phenotype correlations in DSG1 mutations. J Eur Acad Dermatol Venereol 2021; 36:e215-e218. [PMID: 34657339 DOI: 10.1111/jdv.17752] [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] [Received: 07/17/2021] [Revised: 09/21/2021] [Accepted: 10/13/2021] [Indexed: 11/28/2022]
Affiliation(s)
- S Takeuchi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Takeichi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Koike
- Department of Dermatology, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - H Takama
- Department of Dermatology, Aichi Medical University, Nagakute, Japan
| | - K Tanahashi
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Y Okuno
- Medical Genomics Center, Nagoya University Hospital, Nagoya, Japan.,Department of Pediatrics, Nagoya University Graduate School of Medicine, Nagoya, Japan.,Department of Virology, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - Y Muro
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - T Ogi
- Department of Genetics, Research Institute of Environmental Medicine, Nagoya University, Nagoya, Japan
| | - Y Suga
- Department of Dermatology, Juntendo University Urayasu Hospital, Urayasu, Japan
| | - M Akiyama
- Department of Dermatology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Kotani T, Takegaki J, Tamura Y, Kouzaki K, Nakazato K, Ishii N. Repeated bouts of resistance exercise in rats alter mechanistic target of rapamycin complex 1 activity and ribosomal capacity but not muscle protein synthesis. Exp Physiol 2021; 106:1950-1960. [PMID: 34197668 DOI: 10.1113/ep089699] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 04/23/2021] [Accepted: 06/30/2021] [Indexed: 01/03/2023]
Abstract
NEW FINDINGS What is the central question of this study? Is muscle protein synthesis (MPS) additionally activated following exercise when ribosomal capacity is increased after repeated bouts of resistance exercise (RE)? What is the main finding and its importance? Skeletal muscles with increased ribosome content through repeated RE bouts showed sufficient activation of MPS with lower mechanistic target of rapamycin complex 1 signalling. Thus, repeated bouts of RE possibly change the translational capacity and efficiency to optimize translation activation following RE. ABSTRACT Resistance exercise (RE) activates ribosome biogenesis and increases ribosome content in skeletal muscles. However, it is unclear whether the increase in ribosome content subsequently causes an increase in RE-induced activation of muscle protein synthesis (MPS). Thus, this study aimed to investigate the relationship between ribosome content and MPS after exercise using a rat RE model. Male Sprague-Dawley rats were categorized into three groups (n = 6 for each group): sedentary (SED) and RE trained with one bout (1B) or three bouts (3B). The RE stimulus was applied to the right gastrocnemius muscle by transcutaneous electrical stimulation under isoflurane anaesthesia. The 3B group underwent stimulation every other day. Our results revealed that 6 h after the last bout of RE, muscles in the 3B group showed an increase in total RNA and 18S+28S rRNA content per muscle weight compared with the SED and 1B groups. In both the 1B and 3B groups, MPS, estimated by puromycin incorporation in proteins, was higher than that in the SED group 6 h after exercise; however, no significant difference was observed between the 1B and 3B groups. In the 1B and 3B groups, phosphorylated p70S6K at Thr-389 increased, indicating mechanistic target of rapamycin complex 1 (mTORC1) activity. p70S6K phosphorylation level was lower in the 3B group than in the 1B group. Finally, protein synthesis per ribosome (indicator of translation efficiency) was lower in the 3B group than in the 1B group. Thus, three bouts of RE changed the ribosome content and mTORC1 activation, but not the degree of RE-induced global MPS activation.
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Affiliation(s)
- Takaya Kotani
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Junya Takegaki
- Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Shiga, Japan
| | - Yuki Tamura
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan.,Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan.,Faculty of Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Karina Kouzaki
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan.,Graduate School of Medical and Health Science, Nippon Sport Science University, Tokyo, Japan.,Faculty of Medical Science, Nippon Sport Science University, Tokyo, Japan
| | - Koichi Nakazato
- Research Institute for Sport Science, Nippon Sport Science University, Tokyo, Japan.,Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan.,Graduate School of Medical and Health Science, Nippon Sport Science University, Tokyo, Japan.,Faculty of Medical Science, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Graduate School or Arts and Sciences, The University of Tokyo, Tokyo, Japan
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Niwa Y, Hayama K, Izaki S, Koga H, Ishii N, Terui T, Fujita H. Mucosa-predominant pemphigus vulgaris with anti-desmocollin 2 and 3 antibody positivity and ocular symptoms. Clin Exp Dermatol 2021; 46:1590-1592. [PMID: 34056753 DOI: 10.1111/ced.14771] [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: 05/27/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Y Niwa
- Division of Cutaneous Science, Department of Dermatology, Nihon University School of Medicine, Tokyo, Japan
| | - K Hayama
- Division of Cutaneous Science, Department of Dermatology, Nihon University School of Medicine, Tokyo, Japan
| | - S Izaki
- Division of Cutaneous Science, Department of Dermatology, Nihon University School of Medicine, Tokyo, Japan
| | - H Koga
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - T Terui
- Division of Cutaneous Science, Department of Dermatology, Nihon University School of Medicine, Tokyo, Japan
| | - H Fujita
- Division of Cutaneous Science, Department of Dermatology, Nihon University School of Medicine, Tokyo, Japan
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7
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Li X, Qian H, Natsuaki Y, Koga H, Kawakami T, Tateishi C, Tsuruta D, Ishii N, Hashimoto T. Clinical and immunological findings in 55 patients with anti-laminin 332-type mucous membrane pemphigoid. Br J Dermatol 2021; 185:449-451. [PMID: 33811327 DOI: 10.1111/bjd.20099] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Revised: 03/30/2021] [Accepted: 03/31/2021] [Indexed: 11/26/2022]
Affiliation(s)
- X Li
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan.,Central Laboratory, Dermatology Hospital of Jiangxi Province, Dermatology Institute of Jiangxi Province, and the Affiliated Dermatology Hospital of Nanchang University, Nanchang, 330001, China
| | - H Qian
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan.,Central Laboratory, Dermatology Hospital of Jiangxi Province, Dermatology Institute of Jiangxi Province, and the Affiliated Dermatology Hospital of Nanchang University, Nanchang, 330001, China
| | - Y Natsuaki
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan
| | - H Koga
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan
| | - T Kawakami
- Department of Dermatology, Tohoku Medical and Pharmaceutical University, Sendai, Miyagi, Japan
| | - C Tateishi
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - D Tsuruta
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan.,Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan
| | - T Hashimoto
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan.,Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
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8
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Kotani T, Takegaki J, Tamura Y, Kouzaki K, Nakazato K, Ishii N. The effect of repeated bouts of electrical stimulation-induced muscle contractions on proteolytic signaling in rat skeletal muscle. Physiol Rep 2021; 9:e14842. [PMID: 33991444 PMCID: PMC8123562 DOI: 10.14814/phy2.14842] [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: 02/16/2021] [Accepted: 03/16/2021] [Indexed: 11/24/2022] Open
Abstract
Mechanistic target of rapamycin complex 1 (mTORC1) plays a central role in muscle protein synthesis and repeated bouts of resistance exercise (RE) blunt mTORC1 activation. However, the changes in the proteolytic signaling when recurrent RE bouts attenuate mTORC1 activation are unclear. Using a RE model of electrically stimulated rat skeletal muscle, this study aimed to clarify the effect of repeated RE bouts on acute proteolytic signaling, particularly the calpain, autophagy‐lysosome, and ubiquitin‐proteasome pathway. p70S6K and rpS6 phosphorylation, indicators of mTORC1 activity, were attenuated by repeated RE bouts. Calpain 3 protein was decreased at 6 h post‐RE in all exercised groups regardless of the bout number. Microtubule‐associated protein 1 light chain 3 beta‐II, an indicator of autophagosome formation, was increased at 3 h and repeated RE bouts increased at 6 h, post‐RE. Ubiquitinated proteins were increased following RE, but these increases were independent of the number of RE bouts. These results suggest that the magnitude of autophagosome formation was increased following RE when mTORC1 activity was attenuated with repeated bouts of RE.
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Affiliation(s)
- Takaya Kotani
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.,Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Junya Takegaki
- Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Shiga, Japan
| | - Yuki Tamura
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Karina Kouzaki
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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Affiliation(s)
- Sho Hatanaka
- Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo
| | - Naokata Ishii
- Department of Life Science, Graduate School of Arts and Sciences, The University of Tokyo
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Janela-Lapert R, Castel M, Ishii N, Courville P, Joly P, Hebert V. Pemphigoïde mixte muco-cutanée : caractéristiques cliniques et immunologiques. Ann Dermatol Venereol 2020. [DOI: 10.1016/j.annder.2020.09.009] [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: 10/22/2022]
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Takegaki J, Ogasawara R, Kouzaki K, Fujita S, Nakazato K, Ishii N. The distribution of eukaryotic initiation factor 4E after bouts of resistance exercise is altered by shortening of recovery periods. J Physiol Sci 2020; 70:54. [PMID: 33148163 PMCID: PMC10717013 DOI: 10.1186/s12576-020-00781-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 04/08/2020] [Accepted: 10/22/2020] [Indexed: 11/10/2022]
Abstract
Insufficient duration of recovery between resistance exercise bouts reduces the effects of exercise training, but the influence on muscle anabolic responses is not fully understood. Here, we investigated the changes in the distribution of eukaryotic initiation factor (eIF) 4E, a key regulator of translation initiation, and related factors in mouse skeletal muscle after three successive bouts of resistance exercise with three durations of recovery periods (72 h: conventional, 24 h: shorter, and 8 h: excessively shorter). Bouts of resistance exercise dissociated eIF4E from eIF4E binding protein 1, with the magnitude increasing with shorter recovery. Whereas bouts of resistance exercise with 72 h recovery increased the association of eIF4E and eIF4G, those with shorter recovery did not. Similar results were observed in muscle protein synthesis. These results suggest that insufficient recovery inhibited the association of eIF4E and eIF4G, which might cause attenuation of protein synthesis activation after bouts of resistance exercise.
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Affiliation(s)
- Junya Takegaki
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.
- Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, 1-1-1 Noji-higashi, Kusatsu, Shiga, 525-8577, Japan.
| | - Riki Ogasawara
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
| | - Karina Kouzaki
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Satoshi Fujita
- Faculty of Sport and Health Science, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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Engelman D, Yoshizumi J, Hay R, Osti M, Micali G, Norton S, Walton S, Boralevi F, Bernigaud C, Bowen A, Chang A, Chosidow O, Estrada‐Chavez G, Feldmeier H, Ishii N, Lacarrubba F, Mahé A, Maurer T, Mahdi M, Murdoch M, Pariser D, Nair P, Rehmus W, Romani L, Tilakaratne D, Tuicakau M, Walker S, Wanat K, Whitfeld M, Yotsu R, Steer A, Fuller L. The 2020 International Alliance for the Control of Scabies Consensus Criteria for the Diagnosis of Scabies. Br J Dermatol 2020; 183:808-820. [PMID: 32034956 PMCID: PMC7687112 DOI: 10.1111/bjd.18943] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Scabies is a common parasitic skin condition that causes considerable morbidity globally. Clinical and epidemiological research for scabies has been limited by a lack of standardization of diagnostic methods. OBJECTIVES To develop consensus criteria for the diagnosis of common scabies that could be implemented in a variety of settings. METHODS Consensus diagnostic criteria were developed through a Delphi study with international experts. Detailed recommendations were collected from the expert panel to define the criteria features and guide their implementation. These comments were then combined with a comprehensive review of the available literature and the opinion of an expanded group of international experts to develop detailed, evidence-based definitions and diagnostic methods. RESULTS The 2020 International Alliance for the Control of Scabies (IACS) Consensus Criteria for the Diagnosis of Scabies include three levels of diagnostic certainty and eight subcategories. Confirmed scabies (level A) requires direct visualization of the mite or its products. Clinical scabies (level B) and suspected scabies (level C) rely on clinical assessment of signs and symptoms. Evidence-based, consensus methods for microscopy, visualization and clinical symptoms and signs were developed, along with a media library. CONCLUSIONS The 2020 IACS Criteria represent a pragmatic yet robust set of diagnostic features and methods. The criteria may be implemented in a range of research, public health and clinical settings by selecting the appropriate diagnostic levels and subcategories. These criteria may provide greater consistency and standardization for scabies diagnosis. Validation studies, development of training materials and development of survey methods are now required. What is already known about this topic? The diagnosis of scabies is limited by the lack of accurate, objective tests. Microscopy of skin scrapings can confirm the diagnosis, but it is insensitive, invasive and often impractical. Diagnosis usually relies on clinical assessment, although visualization using dermoscopy is becoming increasingly common. These diagnostic methods have not been standardized, hampering the interpretation of findings from clinical research and epidemiological surveys, and the development of scabies control strategies. What does this study add? International consensus diagnostic criteria for common scabies were developed through a Delphi study with global experts. The 2020 International Alliance for the Control of Scabies (IACS) Criteria categorize diagnosis at three levels of diagnostic certainty (confirmed, clinical and suspected scabies) and eight subcategories, and can be adapted to a range of research and public health settings. Detailed definitions and figures are included to aid training and implementation. The 2020 IACS Criteria may facilitate the standardization of scabies diagnosis.
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Ohta T, Nagashima J, Yoshihisa T, Imagawa Y, Ono N, Fukuda W, Sawada SS, Sasai H, Sasaki K, Ishii N. Association Of Knee Extensor Strength With Prevalence Of Type 2 Diabetes Among Japanese: A Cross-sectional Study. Med Sci Sports Exerc 2020. [DOI: 10.1249/01.mss.0000675172.71789.69] [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: 11/21/2022]
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14
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Luo Y, Hara T, Kawashima A, Ishido Y, Suzuki S, Ishii N, Kambara T, Suzuki K. Pathological role of excessive DNA as a trigger of keratinocyte proliferation in psoriasis. Clin Exp Immunol 2020; 202:1-10. [PMID: 32415989 DOI: 10.1111/cei.13455] [Citation(s) in RCA: 8] [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: 03/09/2020] [Revised: 05/06/2020] [Accepted: 05/11/2020] [Indexed: 12/14/2022] Open
Abstract
Psoriasis is characterized by excessive growth and aberrant differentiation of epidermal keratinocytes due to persistent inflammation. However, the underlying mechanism that triggers immune activation in psoriasis is not clear. In this study, we explored excessive DNA as a potential trigger of psoriasis using cultured human keratinocytes and psoriatic skin tissues. We demonstrated that human genomic DNA fragments induced tumour necrosis factor (TNF)-α expression, hyperproliferation and over-expression of heparin-binding epidermal-like growth factor (HB-EGF) and transforming growth factor (TGF)-α, accompanied by defective expression of keratins 1 and 10 in cultured normal human epidermal keratinocytes, which have a similar phenotype to that of keratinocytes in psoriatic skin lesions. In psoriatic lesions, we found high levels of double-stranded (ds)DNA fragments, accompanying keratinocytes expressing Ki-67, HB-EGF and TNF-α. In addition, we showed that 1,25-dihydroxyvitamin D3 inhibited genomic DNA fragment-induced TNFA and interleukin-1β (IFNB) expression in human keratinocytes, and an intact function of cathelicidin anti-microbial peptide (CAMP) was required for this effect. These results suggest that excessive dsDNA fragments probably act as a risk factor for immune activation in psoriasis, and the active form of vitamin D can prevent genomic DNA-mediated skin inflammation via CAMP.
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Affiliation(s)
- Y Luo
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan.,Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan.,Department of Laboratory Medicine, Nanjing Drum Tower Hospital and Jiangsu Key Laboratory for Molecular Medicine, Nanjing University Medical School, Nanjing, China
| | - T Hara
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - A Kawashima
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan
| | - Y Ishido
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan.,Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
| | - S Suzuki
- Emergency and Critical Care Medicine, Keio University of School of Medicine, Tokyo, Japan
| | - N Ishii
- Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan.,National Sanatorium Tamazenshoen, Tokyo, Japan
| | - T Kambara
- Department of Dermatology, Yokohama City University Medical Center, Yokohama, Japan
| | - K Suzuki
- Department of Clinical Laboratory Science, Faculty of Medical Technology, Teikyo University, Tokyo, Japan.,Leprosy Research Center, National Institute of Infectious Diseases, Tokyo, Japan
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15
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Takegaki J, Ogasawara R, Kotani T, Tamura Y, Takagi R, Nakazato K, Ishii N. Influence of shortened recovery between resistance exercise sessions on muscle-hypertrophic effect in rat skeletal muscle. Physiol Rep 2020; 7:e14155. [PMID: 31250976 PMCID: PMC6598394 DOI: 10.14814/phy2.14155] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 05/26/2019] [Accepted: 06/07/2019] [Indexed: 12/29/2022] Open
Abstract
Resistance exercise training induces muscle hypertrophy, and recovery between sessions is one of the major determinants of this effect. However, the effect of the recovery period between sessions on muscle hypertrophy following resistance exercise training remains unclear. To elucidate the effect of recovery period on hypertrophy, in the present study, we investigated changes in protein degradation systems and hypertrophic responses in rat skeletal muscle to resistance training with variable recovery periods. In the conventional recovery group (exercised every 72 h) and a shorter recovery group (exercised every 24 h), 18 bouts of resistance exercise consisting of 50 repetitions of a 3-sec maximal isometric contraction caused muscle hypertrophy and slight activation of muscle protein degradation systems. By contrast, in an excessively shorter recovery group (exercised every 8 h), 18 bouts of resistance exercise did not cause hypertrophy and markedly activated protein degradation systems, accompanied by inflammatory responses. These observations indicate that excessive shortening of recovery between sessions does not cause skeletal muscle hypertrophy, likely due to the activation of proteolysis induced by inflammatory responses to resistance exercise training.
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Affiliation(s)
- Junya Takegaki
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan.,Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Riki Ogasawara
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
| | - Takaya Kotani
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Yuki Tamura
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Ryo Takagi
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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16
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Kojima Y, Fukusaki C, Ishii N. Effects of hyperoxia on dynamic muscular endurance are associated with individual whole-body endurance capacity. PLoS One 2020; 15:e0231643. [PMID: 32315330 PMCID: PMC7173853 DOI: 10.1371/journal.pone.0231643] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Accepted: 03/27/2020] [Indexed: 11/18/2022] Open
Abstract
Low-intensity training involving high repetitions is recommended to enhance muscular endurance. Hyperoxic conditions could increase the number of repetitions until exhaustion and thereby improve the results of muscular endurance training. This study aimed to investigate the acute effects of hyperoxia on dynamic muscular endurance, and determine individual factors that may be related to these effects. A single-blinded, counterbalanced crossover design was used. Twenty-five young men performed repetitions of the one-arm preacher curl at 30% of their 1-repetition maximum until exhaustion under hyperoxic and normoxic conditions. The maximum number of repetitions was recorded as an index of muscular endurance. Electromyogram (EMG) and near-infrared spectroscopy parameters were measured in the biceps brachii. The maximum number of repetitions was greater (P < 0.001) under hyperoxic conditions (132 ± 59 repetitions) than under normoxic conditions (114 ± 40 repetitions). The root mean square amplitude of EMG and oxygenated hemoglobin concentration for the last five repetitions under normoxic conditions were greater than those under hyperoxic conditions (P = 0.015 and P = 0.003, respectively). The percent change in the maximum number of repetitions between hyperoxic and normoxic conditions had significant positive correlations with individual maximal oxygen uptake measured using an incremental cycle ergometer test (r = 0.562, 95% confidence intervals [CI] = 0.213-0.783, P = 0.003), but not with muscle strength (τ = -0.124, 95% CI = -0.424-0.170, P = 0.387). The 95% CI for the correlation coefficient between the percent change in the maximum number of repetitions and muscular endurance included 0 (τ = 0.284, 95% CI = -0.003-0.565, P = 0.047); this indicated no significant correlation between the two parameters. The results suggest that hyperoxia can acutely enhance dynamic muscular endurance, with delayed elevation of EMG amplitude due to fatigue, and the effects are associated with individual whole-body endurance capacity.
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Affiliation(s)
- Yuta Kojima
- Department of Human and Engineered Environmental Studies, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
| | - Chiho Fukusaki
- Research Center for Total Life Health and Sports Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
- * E-mail:
| | - Naokata Ishii
- Research Center for Total Life Health and Sports Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Kashiwa, Chiba, Japan
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Meguro, Tokyo, Japan
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17
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Slutsky Bank E, Baniel A, Shehadeh W, Gat A, Matz H, Ishii N, Hashimoto T, Sprecher E, Zeeli T. Bullous pemphigoid distributed above the injury level in a paraplegic patient. Clin Exp Dermatol 2020; 45:531-533. [PMID: 31944365 DOI: 10.1111/ced.14162] [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: 11/19/2019] [Indexed: 11/27/2022]
Affiliation(s)
- E Slutsky Bank
- Departments of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - A Baniel
- Departments of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - W Shehadeh
- Departments of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - A Gat
- Department of Pathology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - H Matz
- Departments of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Kurume, Japan
| | - T Hashimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - E Sprecher
- Departments of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.,Department of Human Molecular Genetics & Biochemistry, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - T Zeeli
- Departments of Dermatology, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
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18
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Kadokura Y, Fukusaki C, Ishii N. Effects of illuminance on night-time crying in infants. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.506] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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19
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Takenouchi R, Shibata M, Kishida I, Ishii C, Ishii N, Kawada M. Relation between sleep quality and daily physical activity in chronic schizophrenia patients. Sleep Med 2019. [DOI: 10.1016/j.sleep.2019.11.1037] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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20
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Hayashi M, Tsunoda T, Sato F, Yaguchi Y, Igarashi M, Izumi K, Nishie W, Ishii N, Okamura K, Suzuki T, Hashimoto T. Clinical and immunological characterization of 14 cases of dipeptidyl peptidase‐4 inhibitor‐associated bullous pemphigoid: a single‐centre study. Br J Dermatol 2019; 182:806-807. [DOI: 10.1111/bjd.18516] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
- M. Hayashi
- Department of Dermatology Yamagata University Faculty of Medicine Yamagata Japan
| | - T. Tsunoda
- Department of Dermatology Yamagata University Faculty of Medicine Yamagata Japan
- Division of Dermatology Yamagata City Hospital Saiseikan Yamagata Japan
| | - F. Sato
- Division of Dermatology Yamagata City Hospital Saiseikan Yamagata Japan
| | - Y. Yaguchi
- Department of Dermatology Yamagata University Faculty of Medicine Yamagata Japan
- Division of Dermatology Yamagata City Hospital Saiseikan Yamagata Japan
| | - M. Igarashi
- Division of Diabetes and Endocrinology Yamagata City Hospital Saiseikan Yamagata Japan
| | - K. Izumi
- Department of Dermatology Hokkaido University Graduate School of Medicine Sapporo Japan
| | - W. Nishie
- Department of Dermatology Hokkaido University Graduate School of Medicine Sapporo Japan
| | - N. Ishii
- Department of Dermatology Kurume University School of Medicine Kurume Japan
| | - K. Okamura
- Department of Dermatology Yamagata University Faculty of Medicine Yamagata Japan
| | - T. Suzuki
- Department of Dermatology Yamagata University Faculty of Medicine Yamagata Japan
| | - T. Hashimoto
- Department of Dermatology Osaka City University Graduate School of Medicine Osaka Japan
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21
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Shibata T, Sata K, Oroguchi T, Ishii N. Development of health management system with recording daily living habits and body compositions. Eur J Public Health 2019. [DOI: 10.1093/eurpub/ckz186.394] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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
Abstract
It is difficult for university students to maintain their health. Department of health management was opened at April 2018 in Tokai university, Japan. About two hundred students entered it last year. Health management system was developed to maintain their health through the college life. The system is named THINKss (Tokai Health INtelligence Knowledge Support System). The number of registered students increased about four hundred this year. Every student can record their daily physical and mental conditions, meal photos with the time, body temperature, blood pressure, bone density, body compositions on their smartphone. If they use activity trackers with a wrist-based heart rate sensor (Garmin co. ltd.), their daily activities and sleeping status are corrected through API automatically. The weather information around university is also recorded everyday. Every student can browse own measurements on their smartphones. Because physical status includes cold symptoms (sneeze, throat pain, cough, fatigue, articular pain, muscle pain, chill, and body temperature), the system can recommend visiting a clinic. Because three meal photos are shown alongside, the balance of the meals is known. It may improve their meals. Because the activity tracker records advanced sleeping status (rem, light, deep, and moving), the relationships between mental conditions and sleeping status should be analyzed. Our previous study for common workers showed that mental status related with sleeping status, taking lunch of convenience-store, standard deviation of time of taking lunch, and oversensitivity to noise. Relationships between body composition changes and the lifestyles should be analyzed for university students. Some alert logics for body composition changes and exacerbating mental conditions may be provided based on the evidences from cumulative data of the health management system. These evidence-based alerts will contribute to maintain student’s health through a college life.
Key messages
Health management system was developed to maintain student’s health through the college life. Evidence-based alerts will contribute to maintain student’s health through a college life.
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Affiliation(s)
- T Shibata
- Department of Health Management, Tokai University, Kanagawa, Japan
| | - K Sata
- Lifecare Center, Tokai University, Kanagawa, Japan
| | - T Oroguchi
- Lifecare Center, Tokai University, Kanagawa, Japan
| | - N Ishii
- Department of Health Management, Tokai University, Kanagawa, Japan
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22
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Riera-Monroig J, Iranzo P, Ishii N, Hashimoto T, Mascaró JM. Persistence of antienvoplakin and antiperiplakin antibodies in a patient with paraneoplastic pemphigus 20 years after remission. Br J Dermatol 2019; 182:797-798. [PMID: 31529517 DOI: 10.1111/bjd.18534] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- J Riera-Monroig
- Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Spain
| | - P Iranzo
- Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Spain
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine and Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
| | - T Hashimoto
- Department of Dermatology, Kurume University School of Medicine and Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan.,Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - J M Mascaró
- Department of Dermatology, Hospital Clínic de Barcelona, University of Barcelona, Barcelona, Spain
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23
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Taki T, Takeichi T, Kono M, Sugiura K, Sugimura Y, Ishii N, Hashimoto T, Akiyama M. A patient with bullous pemphigoid with mucosal involvement serologically positive for anti‐BP230 autoantibodies only. Br J Dermatol 2019; 182:221-223. [DOI: 10.1111/bjd.18343] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- T. Taki
- Department of Dermatology Nagoya University Graduate School of Medicine 65 Tsurumai‐cho, Showa‐ku Nagoya Aichi 466‐8550 Japan
| | - T. Takeichi
- Department of Dermatology Nagoya University Graduate School of Medicine 65 Tsurumai‐cho, Showa‐ku Nagoya Aichi 466‐8550 Japan
| | - M. Kono
- Department of Dermatology Nagoya University Graduate School of Medicine 65 Tsurumai‐cho, Showa‐ku Nagoya Aichi 466‐8550 Japan
| | - K. Sugiura
- Department of Dermatology Fujita Health University School of Medicine 1‐98 Dengakugakubo, Kutsukake‐cho Toyoake Aichi 470‐1192 Japan
| | - Y. Sugimura
- Department of Dermatology National Hospital Organization Nagoya Medical Center 4‐1‐1, Sannomaru, Naka‐ku Nagoya Aichi 460‐0001 Japan
| | - N. Ishii
- Department of Dermatology Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology 67 Asahimachi Kurume Fukuoka 830‐0011 Japan
| | - T. Hashimoto
- Department of Dermatology Osaka City University Graduate School of Medicine 1‐4‐3 Asahimachi, Abeno‐ku Osaka 545‐8585 Japan
| | - M. Akiyama
- Department of Dermatology Nagoya University Graduate School of Medicine 65 Tsurumai‐cho, Showa‐ku Nagoya Aichi 466‐8550 Japan
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24
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Koga H, Teye K, Ishii N, Nakama T. 047 Pemphigus autoantibodies to desmocollin 3 exclusively recognize calcium-dependent epitope in extracellular domain 2. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.07.050] [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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25
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Hasegawa M, Luong V, Utsunomiya A, Chino T, Oyama N, Matsushita T, Obara T, Kuboi Y, Ishii N, Machinaga A, Ogasawara H, Ikeda W, Imai T. LB1141 Anti-mouse CX3CL1 monoclonal antibody therapy in mouse models of systemic sclerosis. J Invest Dermatol 2019. [DOI: 10.1016/j.jid.2019.06.114] [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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26
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Matos I, Goyal L, Cleary J, Voss M, Oh D, Bernstam FM, Ng C, Iyer G, Ishii N, Hu Y, Chessex AV, Pokorska-Bocci A, Nicolas V, Kirpicheva Y, Zanna C, Flaherty K, Tabernero J, Hyman D. Debio 1347 in patients with gastrointestinal cancers harboring an FGFR gene fusion: preliminary results. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz157.002] [Citation(s) in RCA: 3] [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: 11/14/2022] Open
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27
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Kotani T, Takegaki J, Takagi R, Nakazato K, Ishii N. Consecutive bouts of electrical stimulation-induced contractions alter ribosome biogenesis in rat skeletal muscle. J Appl Physiol (1985) 2019; 126:1673-1680. [DOI: 10.1152/japplphysiol.00665.2018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Ribosome biogenesis has been implicated in resistance exercise training (RET)-induced skeletal muscle hypertrophy. However, it is unclear how increasing bouts of RET affects ribosome content and biogenesis. This was investigated in the present study using simulated RET where rat skeletal muscle is subjected to increasing bouts of electrical stimulation. Sprague-Dawley rats were randomly assigned to the following seven groups: sedentary for 5 days (SED) or 6 wk (SED_6w), resistance-exercise trained with 1 bout (1B), 2 bouts (2B), 3 bouts (3B), 6 bouts (6B), and 18 bouts (18B). RET was simulated on the right gastrocnemius muscle by transcutaneous electric stimulation under isoflurane anesthesia, and a RET bout was given 3 times a week. Rats in 1B, 2B, and 3B groups showed increased 45S precursor (pre-) rRNA and 18S+28S rRNA content per muscle weight and elevated mRNA levels of c- myc and upstream binding factor (UBF). Increases in phosphorylated UBF and total cyclin D1 protein level were observed 48 h after RET; the former increased as a function of RET duration. In 3B, 6B, and 18B groups, the 18S+28S rRNA content per muscle weight was kept unchanged, and 45S pre-rRNA, cyclin D1, and phosphorylated UBF levels in 18B were lower than those in 3B. These results suggest that RET activates ribosome biogenesis and increases ribosome content through modulation of UBF and cyclin D1 activity at its early phase. Additional bouts of RET may not lead to a further increase in ribosome content per muscle weight through possibly the attenuation of transcription process. NEW & NOTEWORTHY Ribosome biogenesis has been implicated in resistance exercise training-induced skeletal muscle hypertrophy. However, it remains unclear how this is influenced by the volume of repeated bouts of resistance exercise training. Using resistance exercise training model with rat skeletal muscle, we provide evidence that ribosome biogenesis is stimulated by the initial few bouts of resistance exercise training with no additional effect of further increase in the exercise bout.
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Affiliation(s)
- Takaya Kotani
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Junya Takegaki
- Ritsumeikan Global Innovation Research Organization, Ritsumeikan University, Shiga, Japan
| | - Ryo Takagi
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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28
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Ohta T, Nagashima J, Aoki H, Yoshihisa T, Imagawa Y, Ono N, Fukuda W, Konagi R, Sawada SS, Sasai H, Ishii N. Muscle Strength and Bone Strength Assessed with Osteo-sono Assessment Index Among Recreationally Athletic Japanese Women. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000561162.15274.bc] [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: 11/21/2022]
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29
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Kojima Y, Fukusaki C, Ishii N. Individual Differences in Effects of Muscular Endurance Training under Hyperoxic Condition. Med Sci Sports Exerc 2019. [DOI: 10.1249/01.mss.0000561694.60355.42] [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: 11/21/2022]
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30
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Takenami E, Iwamoto S, Shiraishi N, Kato A, Watanabe Y, Yamada Y, Yamada S, Ishii N. Effects of low-intensity resistance training on muscular function and glycemic control in older adults with type 2 diabetes. J Diabetes Investig 2019; 10:331-338. [PMID: 30175458 PMCID: PMC6400238 DOI: 10.1111/jdi.12926] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Revised: 08/23/2018] [Accepted: 08/30/2018] [Indexed: 11/26/2022] Open
Abstract
AIMS/INTRODUCTION The present study aimed to investigate the effects of low-intensity resistance training with slow movement and tonic force generation (LST) on muscular function and glucose metabolism in older patients with type 2 diabetes. MATERIALS AND METHODS A total of 10 patients with type 2 diabetes (age 68.2 ± 9.7 years) engaged in LST training twice a week for 16 weeks. Before the long-term intervention, they were subjected to the measurement of acute changes in blood factors relating to glycemic control as a result of a bout of LST. Body composition, muscular size and strength, and glycated hemoglobin were measured before and after the intervention. RESULTS The magnitudes of the acute changes in the blood factors were all small and were not considered harmful for glucose metabolism. The 16-week LST training caused significant increases in thigh muscle thickness and strength, and decreases in body fat mass and glycated hemoglobin. The change in glycated hemoglobin showed a significant negative correlation with the change in the isokinetic knee extension peak torque measured at a high angular velocity (180°/s). CONCLUSIONS The LST training was shown to be effective for gaining muscular size and strength, and improving glycemic control in older patients with type 2 diabetes. The mechanisms underlying this effect might involve the improvement of contractile function in fast glycolytic fibers.
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Affiliation(s)
- Eri Takenami
- Department of Life SciencesGraduate School of Arts and SciencesUniversity of TokyoTokyoJapan
| | | | - Noriko Shiraishi
- Clinical Laboratory DepartmentKitasato Institute HospitalTokyoJapan
| | - Akiko Kato
- Medical Fitness CenterKitasato Institute HospitalTokyoJapan
| | | | | | - Satoru Yamada
- Diabetes CenterKitasato Institute HospitalTokyoJapan
| | - Naokata Ishii
- Department of Life SciencesGraduate School of Arts and SciencesUniversity of TokyoTokyoJapan
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31
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Koga H, Teye K, Yamashita K, Ishii N, Tsuruta D, Nakama T. Detection of anti-type VII collagen IgE antibodies in epidermolysis bullosa acquisita. Br J Dermatol 2018; 180:1107-1113. [PMID: 30311191 DOI: 10.1111/bjd.17310] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2018] [Indexed: 11/27/2022]
Abstract
BACKGROUND Epidermolysis bullosa acquisita (EBA) is a rare pemphigoid disease involving autoantibodies to type VII collagen (COL7), a major structural component of anchoring fibrils. IgE autoantibodies to type XVII collagen (BP180) have been identified in bullous pemphigoid (BP), the prototype of pemphigoid diseases. Although the pathogenic relevance of IgG anti-COL7 has been investigated, that of IgE in EBA remains unclear. OBJECTIVES To reveal the presence and pathogenic relevance of IgE anti-COL7 in EBA. METHODS We examined IgE antibodies in 109 patients with EBA by indirect immunofluorescence (IIF) and enzyme-linked immunosorbent assay (ELISA). RESULTS IIF with normal human skin revealed IgE reactivity in the basement membrane zone in 29 (26·6%) cases. To verify whether the IgE antibodies were specific to COL7, we performed IIF with 21 clearly positive cases and the skin of a patient with dystrophic EBA, which does not involve COL7. All cases showed negative results, indicating that IgE antibodies were specific to COL7. In a modified IgG COL7 ELISA for IgE, 16 (14·7%) cases were positive (three and 13 cases were negative and positive on IIF, respectively). We compared anti-COL7 IgG and IgE, and found a weak but significant correlation (r = 0·459, P < 0·001). EBA is clinically divided into a mechanobullous (MB; noninflammatory) type and an inflammatory (INF) type resembling BP. Of the IIF-positive cases, 11 of 30 (37%) had INF and nine of 48 (19%) had MB. CONCLUSIONS This study is the first to demonstrate the presence of circulating anti-COL7 IgE in patients with EBA, which may correlate with the clinical phenotype.
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Affiliation(s)
- H Koga
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - K Teye
- Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
| | - K Yamashita
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
| | - D Tsuruta
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - T Nakama
- Department of Dermatology, Kurume University School of Medicine, Fukuoka, Japan
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32
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Tani N, Sugita K, Ishii N, Wakumoto K, Hashimoto T, Yamamoto O. Juvenile pemphigus vulgaris manifesting as vegetating skin lesions. Clin Exp Dermatol 2018; 44:559-561. [PMID: 30288764 DOI: 10.1111/ced.13796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/10/2018] [Indexed: 11/30/2022]
Affiliation(s)
- N Tani
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - K Sugita
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Kurume, Japan
| | - K Wakumoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan.,Department of Dermatology, Matsue Red Cross Hospital, Matsue, Japan
| | - T Hashimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - O Yamamoto
- Division of Dermatology, Department of Medicine of Sensory and Motor Organs, Faculty of Medicine, Tottori University, Yonago, Japan
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Solimani F, Pollmann R, Ishii N, Eming R, Hashimoto T, Schmidt T, Hertl M. Diagnosis of anti-laminin γ-1 pemphigoid by immunoblot analysis. J Eur Acad Dermatol Venereol 2018; 33:735-741. [PMID: 29972879 DOI: 10.1111/jdv.15170] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2018] [Accepted: 06/01/2018] [Indexed: 01/15/2023]
Abstract
BACKGROUND Anti-laminin-γ1 (lam-γ1) pemphigoid, a recently described immunobullous disorder sharing immune serological features of bullous pemphigoid and epidermolysis bullosa acquisita (EBA), is characterized by the detection of serum IgG autoantibodies against the lam-γ1 chain, a 200 kDa heterotrimeric component of the dermal-epidermal junction (DEJ). OBJECTIVE The aim of the study was to develop an easy-to-perform and reliable assay for the serological detection of anti-lam-γ1 IgG autoantibodies. The clinical appearance alone is not sufficient to establish diagnosis of anti-lam-γ1 pemphigoid and rather requires immune serological evidence of (i) IgG reactivity against the dermal portion of salt-split human skin; (ii) exclusion of IgG against other components of the DEJ; and (iii) IgG reactivity with a 200 kDa protein of dermal extracts by immunoblot analysis (IB). METHODS The sera of 55 patients with anti-lam-γ1 pemphigoid were tested by IB with two recombinant heterotrimers, laminin 111 (lam-111) and laminin 421 (lam-421), as well as with a recombinant lam-γ1 chain monomer. Additionally, a total of 41 control sera from patients with EBA (n = 15), psoriasis vulgaris (PV; n = 14), and healthy controls (HC; n = 12) were tested. RESULTS Immunoblot analysis revealed a positive reactivity with lam-111 and/or lam-421 in 46/55 (84%) of anti-lam-γ1 pemphigoid sera. Moreover, 8/9 of the initially non-reactive sera were positive with the lam-γ1 monomer, leading to an overall sensitivity of 98.2%. Analyses of 41 control sera with the three lam-γ1 recombinants led to a specificity of 88%. Specifically, 3/15 EBA sera, 1/14 PV serum and 1/12 HC serum reacted with the lam-γ1 monomer while only the 3 EBA sera reacted with lam-421. CONCLUSIONS Here we show a novel two-step IB assay using the two recombinant laminin trimers and lam-γ1 chain monomer for the detection of anti-lam-γ1 serum IgG with high sensitivity and specificity. This assay will facilitate the diagnosis and further characterization of this disease.
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Affiliation(s)
- F Solimani
- Department of Dermatology and Allergology, Philipps-University, Marburg, Germany
| | - R Pollmann
- Department of Dermatology and Allergology, Philipps-University, Marburg, Germany
| | - N Ishii
- Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan
| | - R Eming
- Department of Dermatology and Allergology, Philipps-University, Marburg, Germany
| | - T Hashimoto
- Kurume University Institute of Cutaneous Cell Biology, Kurume, Fukuoka, Japan.,Osaka City University Graduate School of Medicine, Asahimachi, Abeno, Osaka, Japan
| | - T Schmidt
- Department of Dermatology and Allergology, Philipps-University, Marburg, Germany
| | - M Hertl
- Department of Dermatology and Allergology, Philipps-University, Marburg, Germany
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Ochi E, Maruo M, Tsuchiya Y, Ishii N, Miura K, Sasaki K. Higher Training Frequency Is Important for Gaining Muscular Strength Under Volume-Matched Training. Front Physiol 2018; 9:744. [PMID: 30013480 PMCID: PMC6036131 DOI: 10.3389/fphys.2018.00744] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 08/19/2017] [Accepted: 05/28/2018] [Indexed: 12/03/2022] Open
Abstract
Background: This study investigated the effect of volume-matched strength training programs with different frequency and subsequent detraining on muscle size and strength. Methods: During a training period of 11 weeks, untrained subjects (age: 22.3 ± 0.9 years, height: 173.1 ± 4.8 cm and body mass: 66.8 ± 8.4 kg) performed knee-extension exercise at 67% of their estimated one-repetition maximum either one session per week (T1 group: 6 sets of 12 repetitions per session; n = 10) or three sessions per week (T3 group: 2 sets of 12 repetitions per session; n = 10). Rating of perceived exertion (RPE) and muscle stiffness were measured as an index of muscle fatigue and muscle damage, respectively. The magnitude of muscle hypertrophy was assessed with thigh circumference and the quadriceps muscle thickness. The changes in muscle strength were measured with isometric maximum voluntary contraction torque (MVC). Results: During the training period, RPE was significantly higher in the T1 than in the T3 (p < 0.001). After 11 weeks of training, both groups exhibited significant improvements in thigh circumference, muscle thickness, and MVC compared with baseline values. However, there was a significant group difference in MVC improvement at week 11 (T1: 43.5 ± 15.5%, T3: 65.2 ± 23.2%, p < 0.05). After 6 weeks of detraining, both groups showed the significant decreases in thigh circumference and muscle thickness from those at the end of training period, while no significant effect of detraining was observed in MVC. Conclusion: These results suggest that three training sessions per week with two sets are recommended for untrained subjects to improve muscle strength while minimizing fatigue compared to one session per week with six sets.
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Affiliation(s)
- Eisuke Ochi
- Faculty of Bioscience and Applied Chemistry, Hosei University, Tokyo, Japan
| | - Masataka Maruo
- Graduate School of Education, Okayama University, Okayama, Japan
| | - Yosuke Tsuchiya
- Faculty of Modern Life, Teikyo Heisei University, Tokyo, Japan
| | - Naokata Ishii
- Graduate School of Arts and Sciences, University of Tokyo, Tokyo, Japan
| | - Koji Miura
- Department of Physical Education, International Pacific University, Okayama, Japan
| | - Kazushige Sasaki
- Faculty of Human Sciences and Design, Japan Women's University, Tokyo, Japan
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Takegaki J, Ogasawara R, Tamura Y, Takagi R, Arihara Y, Tsutaki A, Nakazato K, Ishii N. Repeated bouts of resistance exercise with short recovery periods activates mTOR signaling, but not protein synthesis, in mouse skeletal muscle. Physiol Rep 2018; 5:5/22/e13515. [PMID: 29180484 PMCID: PMC5704086 DOI: 10.14814/phy2.13515] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 08/04/2017] [Revised: 10/31/2017] [Accepted: 11/01/2017] [Indexed: 11/24/2022] Open
Abstract
The recovery period between bouts of exercise is one of the major factors influencing the effects of resistance exercise, in addition to exercise intensity and volume. However, the effects of shortening the recovery time between bouts of resistance exercise on subsequent protein synthesis remain unclear. In this study, we investigated the consequences of shortening the recovery time between bouts of resistance exercise on protein synthesis and related processes in mouse skeletal muscles. Eighteen male C57BL/6J mice were randomly subjected to three bouts of resistance exercise with 72 (72H), 24 (24H), or 8 h (8H) of recovery periods between bouts. Resistance exercise, consisting of five sets of 3 s × 10 isometric contractions with 3 min rest between sets, was elicited on the right tibialis anterior muscle via percutaneous electrical stimulation on the deep peroneal nerve under isoflurane anesthesia. The left muscle served as an internal control. Six hours after the third bout of exercise, protein synthesis was found to be activated in the 72H and 24H groups, but not in the 8H group. Phosphorylation of p70S6K at Thr 389, a marker of mammalian target of rapamycin (mTOR) signaling, was increased in all groups, with the 8H group showing the highest magnitude. In contrast, protein carbonylation was observed only in mice in the 8H group. These results suggest that repeated bouts of resistance exercise with 8 h of recovery periods do not effectively increase the levels of muscle protein synthesis despite activation of the mTOR signaling pathway, which likely involves oxidative stress.
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Affiliation(s)
- Junya Takegaki
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Riki Ogasawara
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
| | - Yuki Tamura
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Ryo Takagi
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Yuki Arihara
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Arata Tsutaki
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
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36
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Ishiura N, Tamura-Nakano M, Okochi H, Tateishi C, Maki M, Shimoda Y, Ishii N, Hashimoto T, Tamaki T. Herpetiform pemphigus with characteristic transmission electron microscopic findings of various-sized ballooning vacuoles in keratinocytes without acantholysis. Br J Dermatol 2018; 180:187-192. [PMID: 29573413 DOI: 10.1111/bjd.16554] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/08/2018] [Indexed: 11/27/2022]
Abstract
We report a unique case of a Japanese woman with herpetiform pemphigus (HP) who had IgG autoantibodies reactive with nondesmosomal sites of keratinocytes and presented characteristic transmission electron microscopic (TEM) findings of various-sized vacuoles in keratinocytes without acantholysis. The patient presented with pruritic annular oedematous erythemas with small blisters lining the margins on the trunk and extremities. Histopathological examinations showed intraepidermal blisters with prominent infiltrations of eosinophils. Direct and indirect immunofluorescence tests revealed the presence of in vivo bound and circulating IgG autoantibodies to the keratinocyte cell surfaces. However, enzyme-linked immunosorbent assays for desmoglein (Dsg) 1, Dsg3 and desmocollins 1-3 showed negative results. Immunoblotting using the full-length human Dsg1 recombinant protein showed a positive band. TEM examination showed various-sized vacuoles squashing the nuclei in many keratinocytes, resulting in rupture of the cells. Immunoelectron microscopic examination revealed IgG deposition over the entire keratinocyte cell surfaces, which spared the desmosomes. IgG antibodies were also present on the inside walls of the vacuoles around the nuclei of keratinocytes and on the cell surfaces of infiltrating eosinophils. This patient also had marked eosinophilia and high levels of thymus and activation-regulated chemokine and interleukin-5 in the serum. These results indicated a novel autoantigen on the nondesmosomal keratinocyte cell surfaces and the pathogenesis of bullous spongiotic change with inflammation in HP.
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Affiliation(s)
- N Ishiura
- Department of Dermatology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - M Tamura-Nakano
- Department of Regenerative Medicine, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - H Okochi
- Department of Regenerative Medicine, Research Institute, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - C Tateishi
- Department of Dermatology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno, Osaka, 545-8585, Japan
| | - M Maki
- Department of General Internal Medicine, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
| | - Y Shimoda
- Department of Dermatology, Kyorin University School of Medicine, 6-20-2 Shinkawa, Mitaka, Tokyo, 181-8611, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine and Kurume University Institute of Cutaneous Cell Biology, 67 Asahichou, Kurume, Fukuoka, 830-0011, Japan
| | - T Hashimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, 1-4-3 Asahimachi, Abeno, Osaka, 545-8585, Japan
| | - T Tamaki
- Department of Dermatology, National Center for Global Health and Medicine, 1-21-1 Toyama, Shinjuku, Tokyo, 162-8655, Japan
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37
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Kotani T, Takegaki J, Takagi R, Nakazato K, Ishii N. Effect Of Repeated Bouts Of Resistance Exercise On Skeletal Muscle Proteolytic Response In Rat. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000538656.38441.e3] [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: 11/21/2022]
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38
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Teye K, Koga H, Nagai A, Ohata C, Numata S, Ishii N, Nakama T. 745 Filaggrin gene (FLG) promoter polymorphisms are associated with atopic dermatitis but not ichthyosis vulgaris in Japan. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.755] [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: 10/17/2022]
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39
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Ohta T, Sawada SS, Takagi K, Nagashima J, Yoshihisa T, Imagawa Y, Ono N, Fukuda W, Koyanagi R, Gando Y, Miyachi M, Sasai H, Lee IMI, Blair SN, Ishii N. Cardiorespiratory Fitness and Incidence of Dyslipidemia. Med Sci Sports Exerc 2018. [DOI: 10.1249/01.mss.0000535343.49315.ea] [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: 11/21/2022]
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40
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Kotani T, Takegaki J, Noda M, Takagi R, Nakazato K, Ishii N. Muscle protein synthesis during the early period of resistance training in rat. FASEB J 2018. [DOI: 10.1096/fasebj.2018.32.1_supplement.856.27] [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: 11/11/2022]
Affiliation(s)
| | | | | | - Ryo Takagi
- Nippon Sport Science UniversityTokyoJapan
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41
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Takagi R, Ogasawara R, Takegaki J, Tamura Y, Tsutaki A, Nakazato K, Ishii N. Past injurious exercise attenuates activation of primary calcium-dependent injury pathways in skeletal muscle during subsequent exercise. Physiol Rep 2018; 6:e13660. [PMID: 29595913 PMCID: PMC5875535 DOI: 10.14814/phy2.13660] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 02/18/2018] [Accepted: 02/22/2018] [Indexed: 11/24/2022] Open
Abstract
Past contraction‐induced skeletal muscle injury reduces the degree of subsequent injury; this phenomenon is called the “repeated bout effect (RBE).” This study addresses the mechanisms underlying the RBE, focusing on primary calcium‐dependent injury pathways. Wistar rats were subdivided into single injury (SI) and repeated injury (RI) groups. At age 10 weeks, the right gastrocnemius muscle in each rat in the RI group was subjected to strenuous eccentric contractions (ECs). Subsequently, mild ECs were imposed on the same muscle of each rat at 14 weeks of age in both groups. One day after the exercise, the RI group showed a lower strength deficit than did the SI group, and neither group manifested any increase in membrane permeability. The concentration of protein carbonyls and activation of total calpain increased after ECs given at the age of 14 weeks. Nonetheless, these increases were lower in the RI group than in the SI group. Furthermore, calcium‐dependent autolysis of calpain‐1 and calpain‐3 in the RI group was diminished as compared with that in the SI group. Although peak ankle joint torque and total force generation during ECs at the age of 14 weeks were similar between the two groups, phosphorylation of JNK (Thr183/Tyr185), an indicator of mechanical stress applied to a muscle, was lower in the RI group than in the SI group. These findings suggest that activation of the primary calcium‐dependent injury pathways is attenuated by past injurious exercise, and mechanical stress applied to muscle fibers during ECs may decrease in the RBE.
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Affiliation(s)
- Ryo Takagi
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan.,Department of Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Riki Ogasawara
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Aichi, Japan
| | - Junya Takegaki
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Yuki Tamura
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Arata Tsutaki
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan
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42
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Maekawa T, Ogasawara R, Tsutaki A, Lee K, Nakada S, Nakazato K, Ishii N. Electrically evoked local muscle contractions cause an increase in hippocampal BDNF. Appl Physiol Nutr Metab 2018; 43:491-496. [PMID: 29558209 DOI: 10.1139/apnm-2017-0536] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
High-intensity exercise has recently been shown to cause an increase in brain-derived neurotropic factor (BDNF) in the hippocampus. Some studies have suggested that myokines secreted from contracting skeletal muscle, such as irisin (one of the truncated form of fibronectin type III domain-containing protein 5 (FNDC5)), play important roles in this process. Thus, we hypothesized that locally evoked muscle contractions may cause an increase of BDNF in the hippocampus through some afferent mechanisms. Under anesthesia, Sprague-Dawley rats were fixed on a custom-made dynamometer and their triceps surae muscles were made to maximally contract via delivery of electric stimulations of the sciatic nerve (100 Hz with 1-ms pulse and 3-s duration). Following 50 repeated maximal isometric contractions, the protein expressions of BDNF and activation of its receptor in the hippocampus significantly increased compared with the sham-operated control rats. However, the expression of both BDNF and FNDC5 within stimulated muscles did not significantly increase, nor did their serum concentrations change. These results indicate that local muscular contractions under unconsciousness can induce BDNF expression in the hippocampus. This effect may be mediated by peripheral reception of muscle contraction, but not by systemic factors.
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Affiliation(s)
- Takahiro Maekawa
- a Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
| | - Riki Ogasawara
- a Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan.,b Department of Life and Materials Engineering, Nagoya Institute of Technology, Nagoya 466-8555, Japan
| | - Arata Tsutaki
- c Graduate School of Health and Sport Sciences, Nippon Sport Science University, Tokyo 158-8508, Japan
| | - Kihyuk Lee
- c Graduate School of Health and Sport Sciences, Nippon Sport Science University, Tokyo 158-8508, Japan
| | - Satoshi Nakada
- a Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
| | - Koichi Nakazato
- c Graduate School of Health and Sport Sciences, Nippon Sport Science University, Tokyo 158-8508, Japan
| | - Naokata Ishii
- a Department of Life Sciences, Graduate School of Arts and Sciences, The University of Tokyo, Tokyo 153-8902, Japan
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43
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Takagi R, Ogasawara R, Takegaki J, Tsutaki A, Nakazato K, Ishii N. Influence of past injurious exercise on fiber type-specific acute anabolic response to resistance exercise in skeletal muscle. J Appl Physiol (1985) 2018; 124:16-22. [PMID: 28912360 DOI: 10.1152/japplphysiol.00480.2017] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 01/10/2023] Open
Abstract
We investigated the influence of past injurious exercise on anabolic response of skeletal muscle fibers to resistance exercise (RE). Wistar rats were divided into exercise (E) and exercise-after-injury (I-E) groups. At age 10 wk, the right gastrocnemius muscle in each rat in the I-E group was subjected to strenuous eccentric contractions. Subsequently, RE was imposed on the same muscle of each rat at 14 wk of age in both groups. Peak joint torque and total force generation per body mass during RE were similar between the groups. Muscle protein synthesis (MPS) in the I-E group was higher than that in the E group 6 h after RE. Furthermore, levels of phospho-p70S6 kinase (Thr389) and phospho-ribosomal protein S6 (phospho-rpS6) (Ser240/244), a downstream target of p70S6 kinase, were higher in the I-E group than in the E group. For the anabolic response in each fiber type, the I-E group showed a higher MPS response in type IIb, IIa, and I fibers and a higher phospho-rpS6 response in type IIx, IIa, and I fibers than the E group. In the I-E group, the relative content of myosin heavy chain (MHC) IIa was higher and that of MHC IIb was lower than those in the E group. In addition, type IIa fibers showed a lower MPS response to RE than type IIb fibers in the I-E group. In conclusion, the past injurious exercise enhanced the MPS and phospho-rpS6 responses in type IIb, IIa, and I fibers and type IIx, IIa, and I fibers, respectively. NEW & NOTEWORTHY Past injurious exercise increased the muscle protein synthesis (MPS) response and mammalian target of rapamycin complex 1 (mTORC1) signaling activation to resistance exercise. In the responses of each fiber type, the past injurious exercise increased the MPS and phosphorylation ribosomal protein (Ser240/244) responses in type IIb, IIa, and I fibers and type IIx, IIa, and I fibers, respectively.
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Affiliation(s)
- Ryo Takagi
- Graduate School of Health and Sport Science, Nippon Sport Science University , Tokyo , Japan.,Department of Life Sciences, The University of Tokyo , Tokyo , Japan
| | - Riki Ogasawara
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology , Aichi , Japan
| | - Junya Takegaki
- Department of Life Sciences, The University of Tokyo , Tokyo , Japan
| | - Arata Tsutaki
- Graduate School of Health and Sport Science, Nippon Sport Science University , Tokyo , Japan
| | - Koichi Nakazato
- Graduate School of Health and Sport Science, Nippon Sport Science University , Tokyo , Japan
| | - Naokata Ishii
- Department of Life Sciences, The University of Tokyo , Tokyo , Japan
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Yamaguchi Y, Shinkuma S, Ishii N, Takashima S, Natsuga K, Ujiie H, Iwata H, Nomura T, Fujita Y, Hamasaka A, Hamasaka K, Hashimoto T, Shimizu H. Appearance of antidesmocollin 1 autoantibodies leading to a vegetative lesion in a patient with pemphigus vulgaris. Br J Dermatol 2017; 178:294-295. [DOI: 10.1111/bjd.15834] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Y. Yamaguchi
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | - S. Shinkuma
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | - N. Ishii
- Department of Dermatology Kurume University School of Medicine Kurume Fukuoka Japan
- Kurume University Institute of Cutaneous Cell Biology Kurume Fukuoka Japan
| | - S. Takashima
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | - K. Natsuga
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | - H. Ujiie
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | - H. Iwata
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | - T. Nomura
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | - Y. Fujita
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
| | | | | | - T. Hashimoto
- Department of Dermatology Kurume University School of Medicine Kurume Fukuoka Japan
- Kurume University Institute of Cutaneous Cell Biology Kurume Fukuoka Japan
| | - H. Shimizu
- Department of Dermatology Hokkaido University Graduate School of Medicine Kita‐ku Sapporo Japan
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Schmidt T, Hoch M, Lotfi Jad SS, Solimani F, Di Zenzo G, Marzano AV, Goebeler M, Cozzani E, Kern JS, Sitaru C, Lakoš Jukić I, Sárdy M, Uzun S, Jedlickova H, Gläser R, Kaneda M, Eming R, Göpel G, Ishii N, Greene B, Hashimoto T, Hertl M. Serological diagnostics in the detection of IgG autoantibodies against human collagen VII in epidermolysis bullosa acquisita: a multicentre analysis. Br J Dermatol 2017; 177:1683-1692. [PMID: 28703393 DOI: 10.1111/bjd.15800] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/28/2017] [Indexed: 11/29/2022]
Abstract
BACKGROUND Epidermolysis bullosa acquisita (EBA) is a rare, potentially devastating autoimmune disease of the skin. IgG autoantibodies directed against type VII collagen (Col7), the major component of anchoring fibrils, induce skin fragility leading to cutaneous and mucocutaneous blister formation, which is mostly of a scarring phenotype. Thus, powerful and reproducible diagnostic assays are critical to establish the diagnosis of EBA early to avoid irreversible sequelae. OBJECTIVES The present international, retrospective multicentre study included a large cohort of patients with EBA and evaluated the diagnostic power of four different diagnostic assays for the detection of anti-Col7 IgG autoantibodies. METHODS Overall, 95 EBA sera and 200 control sera consisting of 100 bullous pemphigoid sera, 50 pemphigus vulgaris sera and 50 sera of healthy controls were tested for anti-Col7 IgG autoantibodies using indirect immunofluorescence (IIF), two commercial enzyme-linked immunosorbent assay (ELISA) systems and Western blot (WB) analysis. EBA sera were taken from patients with positive direct immunofluorescence and IgG reactivity in at least one of the immunoserological assays (IIF, ELISA, WB). RESULTS A Col7-NC1/NC2 ELISA (MBL, Nagoya, Japan) showed the highest sensitivity (97·9%), followed by a Col7-NC1 ELISA (Euroimmun, Lübeck, Germany) (89·5%), WB with Col7-NC1 (85·3%), and IIF on saline-split human skin (74·7%). The specificities of both ELISA systems were comparable (NC1 98·7%, NC1/NC2 99·3%). Furthermore, WB was more sensitive than IIF, which was more specific. CONCLUSIONS The two commercially available ELISA systems allow for a highly sensitive and specific diagnosis of EBA. The sensitivity of the Col7-NC1/NC2 ELISA is significantly higher compared with the ELISA based on the Col7-NC1 domain only.
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Affiliation(s)
- T Schmidt
- Department of Dermatology and Allergology, Philipps-University, Marburg, D-35043, Germany
| | - M Hoch
- Department of Dermatology and Allergology, Philipps-University, Marburg, D-35043, Germany
| | - S S Lotfi Jad
- Department of Dermatology and Allergology, Philipps-University, Marburg, D-35043, Germany
| | - F Solimani
- Department of Dermatology and Allergology, Philipps-University, Marburg, D-35043, Germany
| | - G Di Zenzo
- Istituto Dermopatico dell'Immacolata, Rome, Italy
| | - A V Marzano
- Dipartimento di Fisiopatologia Medico-Chirurgica e dei Trapianti, Università degli Studi di Milano - Unità Operativa di Dermatologia, IRCCS Fondazione Ca' Granda, Ospedale Maggiore Policlinico, Milan, Italy
| | - M Goebeler
- Department of Dermatology, Venereology and Allergology, Julius-Maximilians-University Würzburg, Würzburg, Germany
| | - E Cozzani
- Dermatology, IRCCS AOU San Martino Di.S.Sal., Genoa, Italy
| | - J S Kern
- Department of Dermatology, Medical Center, University of Freiburg, Freiburg, Germany
| | - C Sitaru
- Department of Dermatology, Medical Center, University of Freiburg, Freiburg, Germany
| | - I Lakoš Jukić
- Department of Dermatovenerology, University of Zagreb, Zagreb, Croatia
| | - M Sárdy
- München, Department of Dermatology and Allergology, Ludwig Maximilians University Munich, Munich, Germany
| | - S Uzun
- Department of Dermatology and Venereology, Faculty of Medicine, Akdeniz University, Antalya, Turkey
| | - H Jedlickova
- Department of Dermatovenereology, St. Anna University Hospital, Masaryk University, Brno, Czech Republic
| | - R Gläser
- Department of Dermatology, University Hospital of Schleswig-Holstein, Kiel, Germany
| | - M Kaneda
- Medical and Biological Laboratories, Co. Ltd, Nagoya, Japan
| | - R Eming
- Department of Dermatology and Allergology, Philipps-University, Marburg, D-35043, Germany
| | - G Göpel
- Department of Dermatology and Allergology, Philipps-University, Marburg, D-35043, Germany
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Kurume, Japan
| | - B Greene
- Institute of Biometry and Statistics, Philipps-University Marburg, D-35043, Marburg, Germany
| | - T Hashimoto
- Department of Dermatology, Kurume University School of Medicine, Kurume, Japan
| | - M Hertl
- Department of Dermatology and Allergology, Philipps-University, Marburg, D-35043, Germany
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46
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Kikuchi N, Tsuchiya Y, Nakazato K, Ishii N, Ochi E. Effects of the ACTN3 R577X Genotype on the Muscular Strength and Range of Motion Before and After Eccentric Contractions of the Elbow Flexors. Int J Sports Med 2017; 39:148-153. [PMID: 29165731 DOI: 10.1055/s-0043-120762] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The purpose of present study was to examine the association between ACTN3 R577X genotype and functional characteristics of elbow flexors before and after isokinetic eccentric contractions (ECCs). Fifty-two men (age: 20.8±3.8 years, height: 172.5±5.9 cm, body mass: 64.7±6.5 kg, BMI: 21.7±1.7) who had not participated in any regular resistance training for at least 1 year prior to this study were recruited. ECCs consisted of five sets of six maximal voluntary isokinetic (30°/s) ECCs of the elbow flexors with a range of motion (ROM) from 90° flexion to 0° (full extension). Measurements of maximal voluntary isometric contraction (MVC) torque, ROM, and muscle soreness were taken before, immediately after, and 1, 2, 3, and 5 days after ECCs. Genotyping results were analyzed for identifying ACTN3 R577X polymorphism (rs1815739) using TaqMan approach. The genotype frequencies of the ACTN3 R577X polymorphism were RR 26.9% (n=14), RX 50.0% (n=26), and XX 23.1% (n=12). There were no significant differences in MVC torque, ROM, and soreness between three genotype groups of ACTN3 R577X. However, MVC at baseline was greater in RR homozygotes than in X-allele carriers (combined XX and RX; p<0.05). ROM in RR homozygotes at baseline was lower than that of X-allele carriers. Although a significant decrease in ROM was observed in X-allele carriers until 3 days after ECCs, a significant ROM reduction in RR homozygotes was observed only immediately after ECCs. Our data indicated that ACTN3 RR genotype has higher MVC and lower flexibility than X-allele carriers at baseline, but the effect of ACTN3 R577X genotype on these two parameters is limited after ECCs.
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Affiliation(s)
- Naoki Kikuchi
- Department of Training Science, Nippon Sport Science University, Tokyo, Japan
| | - Yosuke Tsuchiya
- Faculty of Modern life, Teikyo Heisei University, Tokyo, Japan
| | - Koichi Nakazato
- Exercise Physiology, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Graduate School of Arts and Sciences, The University of Tokyo, Tokyo, Japan
| | - Eisuke Ochi
- Faculty of Bioscience and Applied Chemistry, Hosei University, Tokyo, Japan
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Moreno-Artero E, Querol-Cisneros E, Rodríguez-Garijo N, Tomás-Velázquez A, Idoate MA, Ishii N, Hashimoto T, España A. Paraneoplastic pemphigus without detectable anti-plakin antibodies in a patient with non-Hodgkin lymphoma. Ann Hematol 2017; 97:543-544. [PMID: 29143865 DOI: 10.1007/s00277-017-3171-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Accepted: 11/03/2017] [Indexed: 11/25/2022]
Affiliation(s)
- E Moreno-Artero
- Department of Dermatology, School of Medicine, University Clinic of Navarra, University of Navarra, PO Box 4209, Pamplona, Navarre, Spain
| | - E Querol-Cisneros
- Department of Dermatology, School of Medicine, University Clinic of Navarra, University of Navarra, PO Box 4209, Pamplona, Navarre, Spain
| | - N Rodríguez-Garijo
- Department of Dermatology, School of Medicine, University Clinic of Navarra, University of Navarra, PO Box 4209, Pamplona, Navarre, Spain
| | - A Tomás-Velázquez
- Department of Dermatology, School of Medicine, University Clinic of Navarra, University of Navarra, PO Box 4209, Pamplona, Navarre, Spain
| | - M A Idoate
- Department of Pathology, University Clinic of Navarra, University of Navarra, Pamplona, Navarre, Spain
- IdiSNA, Navarra Institute for Health Research, Pamplona, Navarre, Spain
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, Kurume, Japan
| | - T Hashimoto
- Department of Dermatology, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Agustín España
- Department of Dermatology, School of Medicine, University Clinic of Navarra, University of Navarra, PO Box 4209, Pamplona, Navarre, Spain.
- IdiSNA, Navarra Institute for Health Research, Pamplona, Navarre, Spain.
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48
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Aizawa N, Asahina A, Ishii N, Hashimoto T, Nakagawa H. The nose as a predilection site of pemphigus. Clin Exp Dermatol 2017; 43:71-72. [PMID: 29027253 DOI: 10.1111/ced.13275] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/02/2017] [Indexed: 11/29/2022]
Affiliation(s)
- N Aizawa
- Department of Dermatology, Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - A Asahina
- Department of Dermatology, Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Japan
| | - T Hashimoto
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Kurume, Japan
| | - H Nakagawa
- Department of Dermatology, Jikei University School of Medicine, 3-25-8 Nishi-Shimbashi, Minato-ku, Tokyo, 105-8461, Japan
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49
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Ogasawara R, Arihara Y, Takegaki J, Nakazato K, Ishii N. Relationship between exercise volume and muscle protein synthesis in a rat model of resistance exercise. J Appl Physiol (1985) 2017; 123:710-716. [DOI: 10.1152/japplphysiol.01009.2016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 07/17/2017] [Accepted: 07/17/2017] [Indexed: 01/17/2023] Open
Abstract
Resistance exercise (RE) volume is recognized as an important factor that stimulates muscle protein synthesis (MPS) and is considered, at least in part, to be involved in the mammalian target of rapamycin complex 1 (mTORC1)-associated signaling. However, the effects of relatively high-volume RE on mTORC1 and MPS remain unclear. In the present study, we used an animal model of RE to investigate the relationship between RE volume and MPS. Male Sprague-Dawley rats were subjected to RE, and muscle samples were obtained 6 h after performing 1, 3, 5, 10, or 20 sets of RE. Although 1 set of RE did not increase MPS [measured by the surface sensing of translation (SUnSET) method], multiple sets (3, 5, 10, and 20 sets) significantly increased MPS. However, the increase in MPS reached a plateau after 3 or 5 sets of RE, and no further increase in MPS was observed with additional RE sets. In contrast to the MPS response, we observed that p70S6K phosphorylation at Thr389, a marker of mTORC1 activity, and Ser240/244 phosphorylation of rpS6, a downstream target of p70S6K, gradually increased with higher RE volume. The above results suggest that the relationship between RE volume and MPS was not linear. Thus the increase in MPS with increasing RE volume saturates before p70S6K phosphorylation, suggesting a threshold effect for the relationship between p70S6K activation and MPS. NEW & NOTEWORTHY The aim of this study was to investigate the relationship between resistance exercise (RE) volume and muscle protein synthesis. We found that the relationship between RE volume and p70S6K phosphorylation was almost linear, but the increase in muscle protein synthesis began to plateau after approximately five sets of RE.
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Affiliation(s)
- Riki Ogasawara
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan; and
| | - Yuki Arihara
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan; and
| | - Junya Takegaki
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan; and
| | - Koichi Nakazato
- Department of Exercise Physiology, Nippon Sport Science University, Tokyo, Japan
| | - Naokata Ishii
- Department of Life Sciences, The University of Tokyo, Tokyo, Japan; and
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50
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Ishii N, Mochizuki H, Ebihara Y, Shiomi K, Nakazato M. Incidence of clinical symptoms and neurological signs in patients with chronic arsenic exposure in miyazaki, Japan: A 40-year retrospective descriptive study. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.3613] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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