1
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Uotani Y, Sasaki N, Nakashima M, Akiyama R, Oguri N, Miyamoto S, Miyauchi S, Okamura S, Okubo Y, Tokuyama T, Ohno H, Nakano Y. Clinical Features of Tachycardia-induced Cardiomyopathy in Patients with Atrial Fibrillation. Intern Med 2024:2466-23. [PMID: 38369360 DOI: 10.2169/internalmedicine.2466-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/20/2024] Open
Abstract
Objective Atrial fibrillation (AF) is the most common cause of tachycardia-induced cardiomyopathy (TIC). However, which patients with AF are prone to developing TIC remains unclear. In this study, we investigated the clinical features of AF patients with TIC. Methods This single-center study included 722 patients with AF (average age, 63.1±10.2 years old; 191 women) who underwent radiofrequency catheter ablation. We defined TIC as an initial left ventricular ejection fraction (LVEF) of <40% and a >20% recovery of the LVEF after successful AF ablation and compared the clinical characteristics between the TIC and control groups. Results The proportions of type 2 diabetes (30.5% vs. 14.7%), renal dysfunction (34.2% vs. 23.8%), hypertension (67.1% vs. 54.8%), and persistent AF (62.2% vs. 32.2%) were significantly higher in the TIC group (n=82) than in the control group (n=640). The atrioventricular nodal effective refractory period (AVNERP) (303±72 ms vs. 332±86 ms; p=0.017) was significantly shorter in the TIC group than in the control group. A multivariable analysis found that persistent AF [odds ratio (OR), 3.19; 95% confidence interval (CI), 1.94-5.24], renal dysfunction (OR, 1.87; 95% CI, 1.06-3.32), and type 2 diabetes (OR, 2.30; 95% CI, 1.31-4.05) were significantly associated with TIC. Conclusion Comorbid renal dysfunction and type 2 diabetes were clinical features of AF patients with TIC. Persistent AF, and short AVNERP may be involved in the development of TIC.
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Affiliation(s)
- Yukimi Uotani
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Nobuo Sasaki
- Health Management and Promotion Center, Hiroshima Atomic Bomb Casualty Council, Japan
| | - Mika Nakashima
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Rie Akiyama
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Naoto Oguri
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Shogo Miyamoto
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Shunsuke Miyauchi
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Sho Okamura
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Yousaku Okubo
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Takehito Tokuyama
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
| | - Yukiko Nakano
- Department of Cardiovascular Medicine, Hiroshima University Graduate School of Biomedical and Health Sciences, Japan
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2
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Shinjo H, Nagano G, Ishii S, Himeno N, Yamamoto Y, Sagawa J, Baba R, Egusa G, Hattori N, Ohno H. Immunoprecipitation with an Anti-Epitope Tag Affinity Gel to Study Protein-Protein Interactions. J Vis Exp 2024. [PMID: 38251756 DOI: 10.3791/66085] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2024] Open
Abstract
Protein-protein interactions (PPIs) play a pivotal role in biological phenomena, such as cellular organization, intracellular signal transduction, and transcriptional regulation. Therefore, understanding PPIs is an important starting point for further investigation of the function of the target protein. In this study, we propose a simple method to determine the binding of two target proteins by introducing mammalian expression vectors into HEK-293 cells using the polyethylenimine method, lysing the cells in homemade protein lysis buffer, and pulling down the target proteins on an epitope tag affinity gel. In addition, the PPI between the various epitope tag fused proteins can be confirmed by using affinity antibodies against each tag instead of the epitope tag affinity gel. This protocol could also be used to verify various PPIs, including nuclear extracts, from other cell lines. Therefore, it can be used as a basic method in a variety of PPI experiments. Proteins degrade by extended time course and repeated freeze-thaw cycles. Therefore, cell lysis, immunoprecipitation, and immunoblotting should be performed as seamlessly as possible.
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Affiliation(s)
- Hiroko Shinjo
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University;
| | - Shogo Ishii
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Natsumi Himeno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Yutaro Yamamoto
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Junji Sagawa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Ryuta Baba
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Gentaro Egusa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University
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3
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Hiraike Y, Saito K, Oguchi M, Wada T, Toda G, Tsutsumi S, Bando K, Sagawa J, Nagano G, Ohno H, Kubota N, Kubota T, Aburatani H, Kadowaki T, Waki H, Yanagimoto S, Yamauchi T. NFIA in adipocytes reciprocally regulates mitochondrial and inflammatory gene program to improve glucose homeostasis. Proc Natl Acad Sci U S A 2023; 120:e2308750120. [PMID: 37487068 PMCID: PMC10401007 DOI: 10.1073/pnas.2308750120] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 06/20/2023] [Indexed: 07/26/2023] Open
Abstract
Adipose tissue is central to regulation of energy homeostasis. Adaptive thermogenesis, which relies on mitochondrial oxidative phosphorylation (Ox-Phos), dissipates energy to counteract obesity. On the other hand, chronic inflammation in adipose tissue is linked to type 2 diabetes and obesity. Here, we show that nuclear factor I-A (NFIA), a transcriptional regulator of brown and beige adipocytes, improves glucose homeostasis by upregulation of Ox-Phos and reciprocal downregulation of inflammation. Mice with transgenic expression of NFIA in adipocytes exhibited improved glucose tolerance and limited weight gain. NFIA up-regulates Ox-Phos and brown-fat-specific genes by enhancer activation that involves facilitated genomic binding of PPARγ. In contrast, NFIA in adipocytes, but not in macrophages, down-regulates proinflammatory cytokine genes to ameliorate adipose tissue inflammation. NFIA binds to regulatory region of the Ccl2 gene, which encodes proinflammatory cytokine MCP-1 (monocyte chemoattractant protein-1), to down-regulate its transcription. CCL2 expression was negatively correlated with NFIA expression in human adipose tissue. These results reveal the beneficial effect of NFIA on glucose and body weight homeostasis and also highlight previously unappreciated role of NFIA in suppressing adipose tissue inflammation.
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Affiliation(s)
- Yuta Hiraike
- Division for Health Service Promotion, The University of Tokyo, Tokyo113-0033, Japan
- The University of Tokyo Excellent Young Researcher Program, The University of Tokyo, Tokyo113-8654, Japan
| | - Kaede Saito
- Division for Health Service Promotion, The University of Tokyo, Tokyo113-0033, Japan
| | - Misato Oguchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
| | - Takahito Wada
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
| | - Gotaro Toda
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
| | - Shuichi Tsutsumi
- Genome Science and Medicine Laboratory, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo153-8904, Japan
| | - Kana Bando
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe650-0047, Japan
| | - Junji Sagawa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima734-8551, Japan
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima734-8551, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima734-8551, Japan
| | - Naoto Kubota
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
- Department of Clinical Nutrition Therapy, The University of Tokyo Hospital, Tokyo113-8655, Japan
| | - Tetsuya Kubota
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
- Division of Diabetes and Metabolism, The Institute of Medical Science, Asahi Life Foundation, Tokyo103-0002, Japan
- National Institutes of Biomedical Innovation, Health and Nutrition, Tokyo162-8636, Japan
| | - Hiroyuki Aburatani
- Genome Science and Medicine Laboratory, Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo153-8904, Japan
| | | | - Hironori Waki
- Department of Diabetes and Endocrinology, Akita University Graduate School of Medicine, Akita010-8543, Japan
| | - Shintaro Yanagimoto
- Division for Health Service Promotion, The University of Tokyo, Tokyo113-0033, Japan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, The University of Tokyo, Tokyo113-8655, Japan
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4
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Egusa G, Ohno H, Nagano G, Sagawa J, Shinjo H, Yamamoto Y, Himeno N, Morita Y, Kanai A, Baba R, Kobuke K, Oki K, Yoneda M, Hattori N. Selective activation of PPARα maintains thermogenic capacity of beige adipocytes. iScience 2023; 26:107143. [PMID: 37456852 PMCID: PMC10338232 DOI: 10.1016/j.isci.2023.107143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 04/17/2023] [Accepted: 06/12/2023] [Indexed: 07/18/2023] Open
Abstract
Beige adipocytes are inducible thermogenic adipocytes used for anti-obesity treatment. Beige adipocytes rapidly lose their thermogenic capacity once external cues are removed. However, long-term administration of stimulants, such as PPARγ and β-adrenergic receptor agonists, is unsuitable due to various side effects. Here, we reported that PPARα pharmacological activation was the preferred target for maintaining induced beige adipocytes. Pemafibrate used in clinical practice for dyslipidemia was developed as a selective PPARα modulator (SPPARMα). Pemafibrate administration regulated the thermogenic capacity of induced beige adipocytes, repressed body weight gain, and ameliorated impaired glucose tolerance in diet-induced obese mouse models. The transcriptome analysis revealed that the E-twenty-six transcription factor ELK1 acted as a cofactor of PPARα. ELK1 was mobilized to the Ucp1 transcription regulatory region with PPARα and modulated its expression by pemafibrate. These results suggest that selective activation of PPARα by pemafibrate is advantageous to maintain the function of beige adipocytes.
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Affiliation(s)
- Gentaro Egusa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Junji Sagawa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiroko Shinjo
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yutaro Yamamoto
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Natsumi Himeno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoshimi Morita
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akinori Kanai
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Tokyo, Japan
| | - Ryuta Baba
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiro Kobuke
- Department of Preventive Medicine for Diabetes and Lifestyle-related Diseases, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Preventive Medicine for Diabetes and Lifestyle-related Diseases, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
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5
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Barutta F, Bellini S, Kimura S, Hase K, Corbetta B, Corbelli A, Fiordaliso F, Bruno S, Biancone L, Barreca A, Papotti M, Hirsh E, Martini M, Gambino R, Durazzo M, Ohno H, Gruden G. Protective effect of the tunneling nanotube-TNFAIP2/M-sec system on podocyte autophagy in diabetic nephropathy. Autophagy 2023; 19:505-524. [PMID: 35659195 PMCID: PMC9851239 DOI: 10.1080/15548627.2022.2080382] [Citation(s) in RCA: 22] [Impact Index Per Article: 22.0] [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] [Indexed: 01/22/2023] Open
Abstract
Podocyte injury leading to albuminuria is a characteristic feature of diabetic nephropathy (DN). Hyperglycemia and advanced glycation end products (AGEs) are major determinants of DN. However, the underlying mechanisms of podocyte injury remain poorly understood. The cytosolic protein TNFAIP2/M-Sec is required for tunneling nanotubes (TNTs) formation, which are membrane channels that transiently connect cells, allowing organelle transfer. Podocytes express TNFAIP2 and form TNTs, but the potential relevance of the TNFAIP2-TNT system in DN is unknown. We studied TNFAIP2 expression in both human and experimental DN and the renal effect of tnfaip2 deletion in streptozotocin-induced DN. Moreover, we explored the role of the TNFAIP2-TNT system in podocytes exposed to diabetes-related insults. TNFAIP2 was overexpressed by podocytes in both human and experimental DN and exposre of podocytes to high glucose and AGEs induced the TNFAIP2-TNT system. In diabetic mice, tnfaip2 deletion exacerbated albuminuria, renal function loss, podocyte injury, and mesangial expansion. Moreover, blockade of the autophagic flux due to lysosomal dysfunction was observed in diabetes-injured podocytes both in vitro and in vivo and exacerbated by tnfaip2 deletion. TNTs allowed autophagosome and lysosome exchange between podocytes, thereby ameliorating AGE-induced lysosomal dysfunction and apoptosis. This protective effect was abolished by tnfaip2 deletion, TNT inhibition, and donor cell lysosome damage. By contrast, Tnfaip2 overexpression enhanced TNT-mediated transfer and prevented AGE-induced autophagy and lysosome dysfunction and apoptosis. In conclusion, TNFAIP2 plays an important protective role in podocytes in the context of DN by allowing TNT-mediated autophagosome and lysosome exchange and may represent a novel druggable target.Abbreviations: AGEs: advanced glycation end products; AKT1: AKT serine/threonine kinase 1; AO: acridine orange; ALs: autolysosomes; APs: autophagosomes; BM: bone marrow; BSA: bovine serum albumin; CTSD: cathepsin D; DIC: differential interference contrast; DN: diabetic nephropathy; FSGS: focal segmental glomerulosclerosis; HG: high glucose; KO: knockout; LAMP1: lysosomal-associated membrane protein 1; LMP: lysosomal membrane permeabilization; MAP1LC3/LC3: microtubule-associated protein 1 light chain 3; PI3K: phosphoinositide 3-kinase; STZ: streptozotocin; TNF: tumor necrosis factor; TNFAIP2: tumor necrosis factor, alpha-induced protein 2; TNTs: tunneling nanotubes; WT: wild type.
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Affiliation(s)
- F. Barutta
- Department of Medical Sciences, University of Turin, Turin, Italy,CONTACT F. Barutta Department of Medical Sciences, Corso Dogliotti 1410126, Turin, Italy
| | - S. Bellini
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - S. Kimura
- Division of Biochemistry, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - K. Hase
- Division of Biochemistry, Faculty of Pharmacy, Keio University, Tokyo, Japan
| | - B. Corbetta
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - A. Corbelli
- Unit of Bioimaging, Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - F. Fiordaliso
- Unit of Bioimaging, Department of Molecular Biochemistry and Pharmacology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - S. Bruno
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - L. Biancone
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - A. Barreca
- Division of Pathology, Città della Salute e della Scienza Hospital, Turin, Italy
| | - M.G. Papotti
- Department of Oncology, University of Turin, Turin, Italy
| | - E. Hirsh
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - M. Martini
- Department of Molecular Biotechnology and Health Sciences, University of Turin, Turin, Italy
| | - R. Gambino
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - M. Durazzo
- Department of Medical Sciences, University of Turin, Turin, Italy
| | - H. Ohno
- Laboratory for Intestinal Ecosystem, RIKEN Center for Integrative Medical Sciences, Yokohama, Japan
| | - G. Gruden
- Department of Medical Sciences, University of Turin, Turin, Italy
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6
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Ohno H, Mano S, Katagiri N, Oguri R, Miyazaki K, Ito K, Sekiya Y, Inoue K, Masuda A, Tsuzuku A, Asano F, Hirashita T, Hayashi T. Influence of using history of immune checkpoint inhibitor therapy for neutropenia caused by combination therapy of ramucirumab and docetaxel. Pharmazie 2022; 77:248-254. [PMID: 36199179 DOI: 10.1691/ph.2022.2403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Recently, pretreatment with immune checkpoint inhibitors (ICIs) has been shown to enhance the therapeutic effects of the combination therapy of ramucirumab (RAM) and docetaxel (DTX); however, its influence on the drug's side effects remains unclear. This study investigated the influence of pretreatment with ICIs on the incidence of neutropenia caused by RAM + DTX therapy in patients with non-small cell lung cancer (NSCLC). Patients with NSCLC who received RAM + DTX therapy at Gifu Prefectural General Medical Center between April 2016 and December 2020 were enrolled. Retrospective data regarding age, sex, performance status and detailed treatment history, among others, at treatment initiation were collected from the patients' electronic medical records. Additionally, data on the course number of RAM + DTX therapy, supportive therapy and blood biochemical parameters, including leukocyte and neutrocyte counts, during the treatment period were collected. We identified 41 patients receiving RAM + DTX therapy. Among the more than grade 3 adverse events caused by this therapy, neutropenia was the most common (78.1%). Despite the fact that all previous risk factors influencing this incidence rate had corresponded, the only factor influencing the incidence rate of neutropenia more than grade 3 was ICI treatment history. A difference in the incidence of neutropenia more than grade 3 in the Kaplan-Meier curve was observed between patients with and without ICI pretreatment history (p = 0.037). The pretreatment history of ICI therapy affects the incidence of neutropenia caused by RAM + DTX therapy in patients with NSCLC.
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Affiliation(s)
- H Ohno
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - S Mano
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - N Katagiri
- College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan
| | - R Oguri
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - K Miyazaki
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - K Ito
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - Y Sekiya
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - K Inoue
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - A Masuda
- Department of Pulmonary Medicine, Gifu Prefectural General Medical Center, Gifu, Japan
| | - A Tsuzuku
- Department of Pulmonary Medicine, Gifu Prefectural General Medical Center, Gifu, Japan
| | - F Asano
- Department of Pulmonary Medicine, Gifu Prefectural General Medical Center, Gifu, Japan
| | - T Hirashita
- Department of Pharmacy, Gifu Prefectural General Medical Center, Gifu, Japan
| | - T Hayashi
- College of Pharmacy, Kinjo Gakuin University, Nagoya, Japan;,
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7
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Hiraike Y, Tsutsumi S, Wada T, Oguchi M, Saito K, Nakamura M, Ota S, Koebis M, Nakao H, Aiba A, Nagano G, Ohno H, Oki K, Yoneda M, Kadowaki T, Aburatani H, Waki H, Yamauchi T. NFIA determines the cis-effect of genetic variation on Ucp1 expression in murinethermogenic adipocytes. iScience 2022; 25:104729. [PMID: 35874098 PMCID: PMC9304612 DOI: 10.1016/j.isci.2022.104729] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 05/17/2022] [Accepted: 07/01/2022] [Indexed: 11/04/2022] Open
Abstract
Thermogenic brown and beige adipocytes counteract obesity by enhancing energy dissipation via uncoupling protein-1 (Ucp1). However, the effect of genetic variation on these cells, a major source of disease susceptibility, has been less well studied. Here we examined beige adipocytes from obesity-prone C57BL/6J (B6) and obesity-resistant 129X1/SvJ (129) mouse strains and identified a cis-regulatory variant rs47238345 that is responsible for differential Ucp1 expression. The alternative T allele of rs47238345 at the Ucp1 -12kb enhancer in 129 facilitates the allele-specific binding of nuclear factor I-A (NFIA) to mediate allele-specific enhancer-promoter interaction and Ucp1 transcription. Furthermore, CRISPR-Cas9/Cpf1-mediated single nucleotide polymorphism (SNP) editing of rs47238345 resulted in increased Ucp1 expression. We also identified Lim homeobox protein 8 (Lhx8), whose expression is higher in 129 than in B6, as a trans-acting regulator of Ucp1 in mice and humans. These results demonstrate the cis- and trans-acting effects of genetic variation on Ucp1 expression that underlie phenotypic diversity. NFIA in adipocytes determines Ucp1 expression between obesity-prone and -resistant mouse strains Allele-specific binding of NFIA at the Ucp1 -12kb enhancer mediates differential Ucp1 expression Editing of a SNP at the Ucp1 -12kb enhancer is sufficient to increase Ucp1 in obesity-prone strain
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Affiliation(s)
- Yuta Hiraike
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan.,Division for Health Service Promotion, the University of Tokyo, Tokyo 113-0033, Japan
| | - Shuichi Tsutsumi
- Genome Science and Medicine Laboratory, Research Center for Advanced Science and Technology, the University of Tokyo, Tokyo 153-8904, Japan
| | - Takahito Wada
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan
| | - Misato Oguchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan
| | - Kaede Saito
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan
| | - Masahiro Nakamura
- Precision Health, Department of Bioengineering, Graduate School of Engineering, the University of Tokyo, Tokyo 113-8655, Japan
| | - Satoshi Ota
- Genome Science and Medicine Laboratory, Research Center for Advanced Science and Technology, the University of Tokyo, Tokyo 153-8904, Japan
| | - Michinori Koebis
- Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Harumi Nakao
- Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Atsu Aiba
- Laboratory of Animal Resources, Center for Disease Biology and Integrative Medicine, Graduate School of Medicine, the University of Tokyo, Tokyo 113-0033, Japan
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Takashi Kadowaki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan.,Department of Prevention of Diabetes and Lifestyle-Related Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan.,Toranomon Hospital, Tokyo 105-8470, Japan
| | - Hiroyuki Aburatani
- Genome Science and Medicine Laboratory, Research Center for Advanced Science and Technology, the University of Tokyo, Tokyo 153-8904, Japan
| | - Hironori Waki
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan.,Department of Diabetes and Endocrinology, Akita University Graduate School of Medicine, Akita 010-8543, Japan
| | - Toshimasa Yamauchi
- Department of Diabetes and Metabolic Diseases, Graduate School of Medicine, the University of Tokyo, Tokyo 113-8655, Japan
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8
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Kodama T, Oki K, Otagaki Y, Baba R, Okada A, Itcho K, Kobuke K, Nagano G, Ohno H, Hinata N, Arihiro K, Gomez-Sanchez CE, Yoneda M, Hattori N. Association of DNA methylation with steroidogenic enzymes in Cushing's adenoma. Endocr Relat Cancer 2022; 29:495-502. [PMID: 35675123 PMCID: PMC9339517 DOI: 10.1530/erc-22-0115] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 06/08/2022] [Indexed: 12/25/2022]
Abstract
DNA methylation and demethylation regulate the transcription of genes. DNA methylation-associated gene expression of adrenal steroidogenic enzymes may regulate cortisol production in cortisol-producing adenoma (CPA). We aimed to determine the DNA methylation levels of all genes encoding steroidogenic enzymes involved in CPA. Additionally, the aims were to clarify the DNA methylation-associated gene expression and evaluate the difference of CPA genotype from others using DNA methylation data. Twenty-five adrenal CPA and six nonfunctioning adrenocortical adenoma (NFA) samples were analyzed. RNA sequencing and DNA methylation array were performed. The methylation levels at 118 methylation sites of the genes were investigated, and their methylation and mRNA levels were subsequently integrated. Among all the steroidogenic enzyme genes studied, CYP17A1 gene was mainly found to be hypomethylated in CPA compared to that in NFA, and the Benjamini-Hochberg procedure demonstrated that methylation levels at two sites in the CYP17A1 gene body were statistically significant. PRKACA mutant CPAs predominantly exhibited hypomethylation of CYP17A1 gene compared with the GNAS mutant CPAs. Inverse associations between CYP17A1 methylation in three regions of the gene body and its mRNA levels were observed in the NFAs and CPAs. In applying clustering analysis using CYP17A1 methylation and mRNA levels, CPAs with PRKACA mutation were differentiated from NFAs and CPAs with a GNAS mutation. We demonstrated that CPAs exhibited hypomethylation of the CYP17A1 gene body in CPA, especially in the PRKACA mutant CPAs. Methylation of CYP17A1 gene may influence its transcription levels.
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Affiliation(s)
- Takaya Kodama
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yu Otagaki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ryuta Baba
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akira Okada
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Nobuyuki Hinata
- Department of Urology, Graduate School of Biomedical and Health Sciences, Hiroshima, University, Hiroshima, Japan
| | - Koji Arihiro
- Department of Anatomical Pathology, Hiroshima University Hospital, Hiroshima, Japan
| | - Celso E. Gomez-Sanchez
- Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center and University of Mississippi Medical Center, Jackson, MS, USA
- Department of Pharmacology & Toxicology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Nguyen ST, Fujita N, Oshima T, Nishihira M, Ohno H, Yoneda M, Urakawa S. Effects of long-term childhood exercise and detraining on lipid accumulation in metabolic-related organs. PLoS One 2022; 17:e0270330. [PMID: 35749411 PMCID: PMC9231767 DOI: 10.1371/journal.pone.0270330] [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: 02/28/2022] [Accepted: 06/09/2022] [Indexed: 11/25/2022] Open
Abstract
The preventive effects of regular exercise on obesity-related health problems are carried over to the non-exercise detraining period, even when physical activity decreases with aging. However, it remains unknown whether regular childhood exercises can be carried over to adulthood. Therefore, this study aimed to investigate the effects of long-term childhood exercise and detraining on lipid accumulation in organs to prevent obesity in adulthood. Four-week-old male Otsuka Long-Evans Tokushima Fatty (OLETF) rats were used as obese animals. OLETF rats were allocated into sedentary and exercise groups: exercise from 4- to 12-week-old and detraining from 12- to 20-week-old. At 12-week-old immediately after the exercise period, regular exercise completely inhibited hyperphagia, obesity, enlarged pancreatic islets, lipid accumulation and lobular inflammation in the liver, hypertrophied adipocytes in the white adipose tissue (WAT), and brown adipose tissue (BAT) whitening in OLETF rats. Additionally, exercise attenuated the decrease in the ratio of muscle wet weight to body weight associated with obesity. Decreased food consumption was maintained during the detraining period, which inhibited obesity and diabetes at 20-week-old after the detraining period. Histologically, childhood exercise inhibited the enlargement of pancreatic islets after the detraining period. In addition, inhibition of lipid accumulation was completely maintained in the WAT and BAT after the detraining period. However, the effectiveness was only partially successful in lipid accumulation and inflammation in the liver. The ratio of muscle wet weight to body weight was maintained after detraining. In conclusion, early long-term regular exercise effectively prevents obesity and diabetes in childhood, and its effectiveness can be tracked later in life. The present study suggests the importance of exercise during childhood and adolescence to inhibit hyperphagia-induced lipid accumulation in metabolic-related organs in adulthood despite exercise cessation.
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Affiliation(s)
- Son Tien Nguyen
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedicine and Health Sciences, Hiroshima University, Kasumi, Minami-ku, Hiroshima, Japan
| | - Naoto Fujita
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedicine and Health Sciences, Hiroshima University, Kasumi, Minami-ku, Hiroshima, Japan
- * E-mail:
| | - Takaya Oshima
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedicine and Health Sciences, Hiroshima University, Kasumi, Minami-ku, Hiroshima, Japan
| | - Misuzu Nishihira
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedicine and Health Sciences, Hiroshima University, Kasumi, Minami-ku, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Kasumi, Minami-ku, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Preventive Medicine for Diabetes and Lifestyle-Related Diseases, Graduate School of Biomedical and Health Sciences, Hiroshima University, Kasumi, Minami-ku, Hiroshima, Japan
| | - Susumu Urakawa
- Department of Musculoskeletal Functional Research and Regeneration, Graduate School of Biomedicine and Health Sciences, Hiroshima University, Kasumi, Minami-ku, Hiroshima, Japan
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10
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Hamamoto Y, Ouhara K, Miyagawa T, Shintani T, Komatsu N, Kajiya M, Matsuda S, Fujita T, Sasaki S, Iwata T, Ohno H, Yoneda M, Mizuno N, Kurihara H. Masticatory dysfunction in patients with diabetic neuropathy: A cross-sectional study. PLoS One 2022; 17:e0269594. [PMID: 35666758 PMCID: PMC9170089 DOI: 10.1371/journal.pone.0269594] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Accepted: 05/24/2022] [Indexed: 11/25/2022] Open
Abstract
Introduction Chewing well is essential for successful diet therapy and control of blood glucose level in patients with diabetes. In addition, long-term hyperglycemia is a risk factor for microvascular complications, which are the main cause of morbidity and mortality in these patients. Hence, it is plausible that masticatory disorder may be relevant to diabetic microvascular complications which is caused by long-term hyperglycemia. The aim of this study was to investigate whether masticatory disorders are relevant to diabetic microvascular complications. Methods This cross-sectional study included 172 patients with type 2 diabetes who underwent educational hospitalization in the Department of Endocrinology and Diabetic Medicine, Hiroshima University Hospital, from April 2016 to March 2020. Masticatory efficiency was determined quantitatively by using the GLUCO SENSOR GS-Ⅱ. Multivariable linear regression models were constructed to examine which factors were related to masticatory efficiency. Statistical significance was defined as a two-sided p value of < 0.05. Results According to the bivariable analysis, masticatory efficiency was significantly correlated with duration of diabetes (p = 0. 049), number of remaining teeth (p < 0.0001), the number of moving teeth (p = 0.007) and condition of diabetic neuropathy (p < 0.0001). Moreover, the number of remaining teeth (p < 0.0001) and diabetic neuropathy (p = 0.007) remained significantly correlated with masticatory efficiency in the multivariable analysis. Conclusions For the first time, we demonstrated that patients with type 2 diabetes who developed diabetic neuropathy had significantly reduced masticatory efficiency. Effective mastication is an important factor in successful diet therapy for diabetes. To prevent the progression of diabetic complications, especially in patients with diabetic neuropathy, it may be necessary to combine individualized therapies from dentists and nutritionists with consideration for the level of masticatory dysfunction.
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Affiliation(s)
- Yuta Hamamoto
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- * E-mail:
| | - Kazuhisa Ouhara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tsuyoshi Miyagawa
- Clinical Research Center in Hiroshima, Hiroshima University Hospital, Hiroshima, Japan
| | - Tomoaki Shintani
- Central Clinical Divisions, Center of Oral Clinical Examination, Hiroshima University Hospital, Hiroshima, Japan
| | - Nao Komatsu
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Mikihito Kajiya
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shinji Matsuda
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tsuyoshi Fujita
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Shinya Sasaki
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tomoyuki Iwata
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noriyoshi Mizuno
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hidemi Kurihara
- Department of Periodontal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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11
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Nanao Y, Oki K, Kobuke K, Itcho K, Baba R, Kodama T, Otagaki Y, Okada A, Yoshii Y, Nagano G, Ohno H, Arihiro K, Gomez-Sanchez CE, Hattori N, Yoneda M. Hypomethylation associated vitamin D receptor expression in ATP1A1 mutant aldosterone-producing adenoma. Mol Cell Endocrinol 2022; 548:111613. [PMID: 35257799 PMCID: PMC9082579 DOI: 10.1016/j.mce.2022.111613] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 02/25/2022] [Accepted: 03/01/2022] [Indexed: 12/25/2022]
Abstract
DNA methylation alteration is tissue-specific and play a pivotal role in regulating gene transcription during cell proliferation and survival. We aimed to detect genes regulated by DNA methylation, and then investigated whether the gene influenced cell proliferation or survival in adrenal cells. DNA methylation and qPCR analyses were performed in nonfunctioning adrenocortical adenoma (NFA, n = 12) and aldosterone-producing adenoma (APA, n = 35) samples. The VDR gene promoter was markedly hypomethylated in APA with ATP1A1 mutation, and the promoter methylation levels showed a significant inverse association with the transcripts in APA. ATP1A1 mutation led to VDR transcription in HAC15 cells, and VDR suppression abrogated ATP1A1 mutation-mediated cell proliferation in HAC15 cells. We demonstrated that APA with ATP1A1 mutation showed entire hypomethylation in the VDR promoter and abundant VDR mRNA and protein expression. VDR suppression abrogated ATP1A1 mutation-mediated cell proliferation in HAC15 cells. Abundant VDR expression would be essential for ATP1A1 mutation-mediated cell proliferation.
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Affiliation(s)
- Yuta Nanao
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Ryuta Baba
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takaya Kodama
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yu Otagaki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Akira Okada
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoko Yoshii
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Koji Arihiro
- Department of Anatomical Pathology, Hiroshima University Hospital, Hiroshima, Japan
| | - Celso E Gomez-Sanchez
- Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center and University of Mississippi Medical Center, Jackson, MS, USA
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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12
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Edo A, Ibrahim DG, Hirooka K, Toda R, Kamaruddin MI, Kawano R, Nagao A, Ohno H, Yoneda M, Kiuchi Y. Dietary Vitamins A, C, and Potassium Intake Is Associated With Narrower Retinal Venular Caliber. Front Med (Lausanne) 2022; 9:818139. [PMID: 35223917 PMCID: PMC8866761 DOI: 10.3389/fmed.2022.818139] [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: 11/19/2021] [Accepted: 01/11/2022] [Indexed: 11/23/2022] Open
Abstract
Introduction The retinal vasculature, a surrogate for the systemic microvasculature, can be observed non-invasively, providing an opportunity to examine the effects of modifiable factors, such as nutrient intake, on microcirculation. We aimed to investigate the possible associations of dietary nutrient intake with the retinal vessel caliber. Methods In this cross-sectional study, a total of 584 participants in a medical survey of Japanese descendants living in Los Angeles in 2015 underwent a dietary assessment, fundus photographic examination, and comprehensive physical and blood examinations. Retinal vessel caliber was measured using fundus photographs with a semi-automated computer system and summarized as central retinal artery and vein equivalents (CRAE and CRVE). The association between dietary nutrient intake and retinal vessel caliber was analyzed using a multivariate linear regression model adjusted for two models including potential confounders. The first model was adjusted for age and sex. The second model was adjusted for age, sex, smoking status, body mass index, hypertension, diabetes, dyslipidemia, history of coronary heart disease, and history of stroke. Results After adjustment of potential confounders, compared to the quartile with the lowest intake, the difference in CRVE for the highest quartile was −5.33 μm [95% confidence interval (CI): −9.91 to −0.76, P for trend = 0.02] for vitamin A, −4.93 μm (95% CI: −9.54 to −0.32, P for trend = 0.02) for vitamin C and −3.90 μm (95% CI: −8.48 to 0.69, P for trend = 0.04) for potassium. Conclusions A significant association was observed between higher vitamins A, C and potassium intakes and narrower retinal venular caliber.
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Affiliation(s)
- Ayaka Edo
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
- *Correspondence: Ayaka Edo
| | | | - Kazuyuki Hirooka
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Rie Toda
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | | | - Reo Kawano
- Clinical Research Center in Hiroshima, Hiroshima University Hospital, Hiroshima, Japan
| | - Akiko Nagao
- Division of Nutrition Management, Hiroshima University Hospital, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoshiaki Kiuchi
- Department of Ophthalmology and Visual Science, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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13
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Ding HT, Kaczmarek O, Lorenz AL, Ohno H, Sandmeyer H, Shu HT. Charm and beauty in the deconfined plasma from quenched lattice QCD. Int J Clin Exp Med 2021. [DOI: 10.1103/physrevd.104.114508] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Baba R, Oki K, Gomez-Sanchez CE, Otagaki Y, Itcho K, Kobuke K, Kodama T, Nagano G, Ohno H, Yoneda M, Hattori N. Genotype-specific cortisol production associated with Cushing's syndrome adenoma with PRKACA mutations. Mol Cell Endocrinol 2021; 538:111456. [PMID: 34520814 PMCID: PMC8551059 DOI: 10.1016/j.mce.2021.111456] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 09/07/2021] [Accepted: 09/08/2021] [Indexed: 12/24/2022]
Abstract
The intracellular molecular mechanisms underlying the genotype of cortisol-producing adenoma (CPA) have not been fully determined. We analyzed gene expressions in CPA and the human adrenocortical cell line (HAC15 cells) with PRKACA mutation. Clustering analysis using a gene set associated with responses to cAMP revealed the possible differences between PRKACA mutant CPAs and GNAS and CTNNB1 mutant CPAs. The levels of STAR, CYP11A1, CYP17A1, CYP21A2, and FDX1 transcripts and cortisol levels per unit area in PRKACA mutant CPAs were significantly higher than those in GNAS mutant CPAs. PRKACA mutations led to an increase in steroidogenic enzyme expression and cortisol production in HAC15 cells. Transcriptome analysis revealed differences between PRKACA mutant CPAs and GNAS and CTNNB1 mutant CPAs. Cortisol production in PRKACA mutant CPAs is increased by the cAMP-PKA signaling pathway-mediated upregulation of steroidogenic enzymes transcription. The intracellular molecular mechanisms underlying these processes would be notably important in PRKACA mutant CPAs.
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Affiliation(s)
- Ryuta Baba
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
| | - Celso E Gomez-Sanchez
- Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center and University of Mississippi Medical Center, Jackson, MS, USA; Department of Pharmacology & Toxicology, University of Mississippi Medical Center, Jackson, MS, USA
| | - Yu Otagaki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takaya Kodama
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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15
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Hayakawa K, Kanai S, Funatsu T, Igarashi J, Jinnai B, Borders WA, Ohno H, Fukami S. Nanosecond Random Telegraph Noise in In-Plane Magnetic Tunnel Junctions. Phys Rev Lett 2021; 126:117202. [PMID: 33798384 DOI: 10.1103/physrevlett.126.117202] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Accepted: 02/16/2021] [Indexed: 06/12/2023]
Abstract
We study the timescale of random telegraph noise (RTN) of nanomagnets in stochastic magnetic tunnel junctions (MTJs). From analytical and numerical calculations based on the Landau-Lifshitz-Gilbert and the Fokker-Planck equations, we reveal mechanisms governing the relaxation time of perpendicular easy-axis MTJs (p-MTJs) and in-plane easy-axis MTJs (i-MTJs), showing that i-MTJs can be made to have faster RTN. Superparamagnetic i-MTJs with small in-plane anisotropy and sizable perpendicular effective anisotropy show relaxation times down to 8 ns at negligible bias current, which is more than 5 orders of magnitude shorter than that of typical stochastic p-MTJs and about 100 times faster than the shortest time of i-MTJs reported so far. The findings give a new insight and foundation in developing stochastic MTJs for high-performance probabilistic computers.
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Affiliation(s)
- K Hayakawa
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
| | - S Kanai
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
- Division for the Establishment of Frontier Sciences, Organization for Advanced Studies, Tohoku University, Sendai 980-8577, Japan
- Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan
- Center for Science and Innovation in Spintronics, Tohoku University, Sendai 980-8577, Japan
| | - T Funatsu
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
| | - J Igarashi
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
| | - B Jinnai
- WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
| | - W A Borders
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
| | - H Ohno
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
- Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan
- Center for Science and Innovation in Spintronics, Tohoku University, Sendai 980-8577, Japan
- WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
- Center for Innovative Integrated Electronic Systems, Tohoku University, Sendai 980-0845, Japan
| | - S Fukami
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, Sendai 980-8577, Japan
- Center for Spintronics Research Network, Tohoku University, Sendai 980-8577, Japan
- Center for Science and Innovation in Spintronics, Tohoku University, Sendai 980-8577, Japan
- WPI-Advanced Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan
- Center for Innovative Integrated Electronic Systems, Tohoku University, Sendai 980-0845, Japan
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16
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Morita Y, Ohno H, Kobuke K, Oki K, Yoneda M. Variation in plasma glucagon levels according to obesity status in Japanese Americans with normal glucose tolerance. Endocr J 2021; 68:95-102. [PMID: 32908087 DOI: 10.1507/endocrj.ej20-0366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Japanese Americans living in the United States are genetically identical to Japanese people, but have undergone a rapid and intense westernization of their lifestyle. This study investigated variability in glucagon secretion after glucose loading among Japanese Americans with normal glucose tolerance (NGT) according to obesity status. The 75-g oral glucose tolerance test (OGTT) was performed for 138 Japanese Americans (aged 40-75 years) living in Los Angeles. Plasma glucagon levels measured using the sandwich enzyme-linked immunosorbent assay were compared according to body mass index (BMI) categories among 119 individuals with NGT. The individuals were classified into three categories according to their BMI values: <22 kg/m2 (n = 37), 22-24.9 kg/m2 (n = 46), and ≥25 kg/m2 (n = 36). Fasting plasma glucagon levels and glucagon-area under the curve levels during the OGTT were the highest in the BMI ≥25 kg/m2 group. Fasting glucagon levels were correlated with BMI (r = 0.399, p < 0.001), fasting insulin levels (r = 0.275, p = 0.003) and the homeostasis model assessment-insulin resistance (r = 0.262, p = 0.004). In conclusion, our findings suggest that fasting hyperglucagonemia is associated with obesity and insulin resistance even during the NGT stage in the Japanese American population.
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Affiliation(s)
- Yoshimi Morita
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Kazuhiro Kobuke
- Department of Preventive Medicine for Diabetes and Lifestyle-related Diseases, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
| | - Masayasu Yoneda
- Department of Preventive Medicine for Diabetes and Lifestyle-related Diseases, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima 734-8551, Japan
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17
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DuttaGupta S, Kurenkov A, Tretiakov OA, Krishnaswamy G, Sala G, Krizakova V, Maccherozzi F, Dhesi SS, Gambardella P, Fukami S, Ohno H. Spin-orbit torque switching of an antiferromagnetic metallic heterostructure. Nat Commun 2020; 11:5715. [PMID: 33177506 PMCID: PMC7658218 DOI: 10.1038/s41467-020-19511-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [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: 03/16/2020] [Accepted: 10/14/2020] [Indexed: 11/09/2022] Open
Abstract
The ability to represent information using an antiferromagnetic material is attractive for future antiferromagnetic spintronic devices. Previous studies have focussed on the utilization of antiferromagnetic materials with biaxial magnetic anisotropy for electrical manipulation. A practical realization of these antiferromagnetic devices is limited by the requirement of material-specific constraints. Here, we demonstrate current-induced switching in a polycrystalline PtMn/Pt metallic heterostructure. A comparison of electrical transport measurements in PtMn with and without the Pt layer, corroborated by x-ray imaging, reveals reversible switching of the thermally-stable antiferromagnetic Néel vector by spin-orbit torques. The presented results demonstrate the potential of polycrystalline metals for antiferromagnetic spintronics.
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Affiliation(s)
- Samik DuttaGupta
- Center for Science and Innovation in Spintronics, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan. .,Center for Spintronics Research Network, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan. .,Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.
| | - A Kurenkov
- Center for Science and Innovation in Spintronics, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Center for Spintronics Research Network, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - Oleg A Tretiakov
- School of Physics, The University of New South Wales, Sydney, 2052, Australia
| | - G Krishnaswamy
- Laboratory for Magnetism and Interface Physics, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
| | - G Sala
- Laboratory for Magnetism and Interface Physics, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
| | - V Krizakova
- Laboratory for Magnetism and Interface Physics, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
| | - F Maccherozzi
- Diamond Light Source, Chilton, Didcot, Oxfordshire, OX11 0DE, United Kingdom
| | - S S Dhesi
- Diamond Light Source, Chilton, Didcot, Oxfordshire, OX11 0DE, United Kingdom
| | - P Gambardella
- Laboratory for Magnetism and Interface Physics, Department of Materials, ETH Zurich, 8093, Zurich, Switzerland
| | - S Fukami
- Center for Science and Innovation in Spintronics, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Center for Spintronics Research Network, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Center for Innovative Integrated Electronic Systems, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-0845, Japan.,WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
| | - H Ohno
- Center for Science and Innovation in Spintronics, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Center for Spintronics Research Network, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan.,Center for Innovative Integrated Electronic Systems, Tohoku University, 468-1 Aramaki Aza Aoba, Aoba-ku, Sendai, 980-0845, Japan.,WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba-ku, Sendai, 980-8577, Japan
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18
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Baba R, Oki K, Itcho K, Kobuke K, Nagano G, Ohno H, Yoneda M, Hattori N. Angiotensin-converting enzyme 2 expression is not induced by the renin-angiotensin system in the lung. ERJ Open Res 2020; 6:00402-2020. [PMID: 33043048 PMCID: PMC7533374 DOI: 10.1183/23120541.00402-2020] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [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: 06/19/2020] [Accepted: 07/27/2020] [Indexed: 01/14/2023] Open
Abstract
Coronavirus disease 2019 (COVID-19), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), has developed into a pandemic with significant morbidity and mortality. SARS-CoV-2 has been reported to invade lung epithelium via the angiotensin-converting enzyme 2 (ACE2) receptor using its glycosylated cell surface spike protein [1]. ACE2 expression in the heart and kidney is regulated by the renin–angiotensin system (RAS), especially angiotensin II (A-II), which is catalysed from angiotensin I (A-I) by angiotensin-converting enzyme (ACE) [2]. In a cohort study in the early period of the COVID-19 outbreak in Wuhan in China, hypertension was found in 30% of the patients and was identified as the most common comorbidity [3]. It has recently been reported that RAS inhibitors are not associated with the severity of COVID-19 in a meta-analysis that included nine studies comprising 3936 patients with hypertension and COVID-19 [4]. The most serious concerns for the use of RAS inhibitors may be related to their role in development of or exacerbation of COVID-19, as suggested in a recent review by Ingrahamet al. [5]. However, the alteration in ACE2 expression in pulmonary cells has not been studied. Pulmonary expression of angiotensin-converting enzyme 2, which is a receptor of severe acute respiratory syndrome coronavirus 2, is not regulated by angiotensin II or renin–angiotensin system inhibitors #COVID19https://bit.ly/3fkopuO
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Affiliation(s)
- Ryuta Baba
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kiyotaka Itcho
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiro Kobuke
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Gaku Nagano
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Dept of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Kawae T, Iwaki D, Nakashima Y, Fudeyasu K, Ishiguro T, Kimura H, Sekikawa K, Hamada H, Ohno H, Yoneda M. Effect of the use of passive body trunk exercise equipment on oxygen consumption and self-efficacy for carrying out exercise in patients with type 2 diabetes. J Diabetes Investig 2020; 11:1265-1271. [PMID: 32052593 PMCID: PMC7477500 DOI: 10.1111/jdi.13234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Revised: 02/04/2020] [Accepted: 02/09/2020] [Indexed: 12/04/2022] Open
Abstract
AIMS/INTRODUCTION Considering the difficulty in inculcating the habit of exercise among patients with type 2 diabetes, devising an easily maintained means of exercise is preferable. Passive body trunk exercise equipment (PBTE) developed for home use might solve several problems related to exercise therapy, both for patients and clinical staff involved in diabetes treatment; however, its efficacy as a therapeutic exercise device for patients with diabetes has not been ascertained. The purpose of this study was to measure the exercise intensity and self-efficacy of PBTE, and to determine whether PBTE is a useful tool for exercise therapy. MATERIALS AND METHODS The participants were 20 patients with type 2 diabetes, and the duration of exercise using the PBTE was set to 10 min. Oxygen consumption during exercise was measured, and self-efficacy for continuing to exercise using the PBTE and for walking was evaluated after completion of the study. RESULTS The average exercise intensity using the PBTE was 1.7 metabolic equivalents, whereas the maximum exercise intensity was an average of 2.0 metabolic equivalents; the reported self-efficacy for continuing to exercise using the PBTE was significantly higher than for walking. CONCLUSIONS Exercise intensity using the PBTE is similar to low-intensity walking, and thus, it might be a useful therapeutic exercise device for patients with type 2 diabetes. Furthermore, it could be an effective exercise device for diabetes patients who do not have regular exercise habits, especially with reduced motor function or lower leg muscle strength.
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Affiliation(s)
- Toshihiro Kawae
- Division of RehabilitationDepartment of Clinical Practice and SupportHiroshima University HospitalHiroshimaJapan
| | - Daisuke Iwaki
- Division of RehabilitationDepartment of Clinical Practice and SupportHiroshima University HospitalHiroshimaJapan
| | - Yuki Nakashima
- Division of RehabilitationDepartment of Clinical Practice and SupportHiroshima University HospitalHiroshimaJapan
| | - Kenichi Fudeyasu
- Division of RehabilitationDepartment of Clinical Practice and SupportHiroshima University HospitalHiroshimaJapan
| | - Tomoyasu Ishiguro
- Makuhari Human Care FacultyDepartment of Physical TherapyTohto UniversityChibaJapan
| | - Hiroaki Kimura
- Department of RehabilitationHiroshima University HospitalHiroshimaJapan
| | - Kiyokazu Sekikawa
- Department of Physical Analysis and Therapeutic SciencesGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Hironobu Hamada
- Department of Physical Analysis and Therapeutic SciencesGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Haruya Ohno
- Department of Molecular and Internal MedicineGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Masayasu Yoneda
- Department of Preventive Medicine for Diabetes and Lifestyle‐related DiseasesGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
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20
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Itcho K, Oki K, Gomez-Sanchez CE, Gomez-Sanchez EP, Ohno H, Kobuke K, Nagano G, Yoshii Y, Baba R, Hattori N, Yoneda M. Endoplasmic Reticulum Chaperone Calmegin Is Upregulated in Aldosterone-Producing Adenoma and Associates With Aldosterone Production. Hypertension 2019; 75:492-499. [PMID: 31865789 DOI: 10.1161/hypertensionaha.119.14062] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
The endoplasmic reticulum (ER) plays a pivotal role in syntheses of proteins and steroid hormones and regulation of intracellular Ca2+ level. We aimed to investigate ER-associated genes in aldosterone-producing adenomas (APAs) and clarify their effect on aldosterone production. Microarray analysis targeting 288 ER-associated genes was conducted using nonfunctioning adrenocortical adenomas (n=5) and APAs (n=19). Immunohistochemistry and quantitative polymerase chain reaction analyses were performed with 13 nonfunctioning adrenocortical adenoma and 48 APA samples. Functional studies were performed with human adrenocortical carcinoma (HAC15) cells, some of which were genetically modified using lentiviruses. The ER chaperone calmegin (CLGN) was the most highly expressed ER-associated gene in APAs relative to nonfunctioning adrenocortical adenomas. Analysis with quantitative polymerase chain reaction revealed CLGN to be 9.5-fold upregulated in APAs relative to nonfunctioning adrenocortical adenomas. There were no differences among different APA genotypes affecting aldosterone production. Immunohistochemistry analysis revealed that CLGN was strongly expressed in APAs and aldosterone-producing cell clusters. Angiotensin II stimulation or KCNJ5 T158A overexpression in HAC15 cells did not affect CLGN mRNA levels. CLGN overexpression in HAC15 cells increased aldosterone levels but did not stimulate CYP11B2 mRNA levels. Pathway and gene ontology analyses using RNA sequencing results showed that tRNA aminoacyl metabolism was the most enriched pathway in CLGN-overexpressing cells. CYP11B2 (aldosterone synthase) and HSD3B2 (3 beta-hydroxysteroid dehydrogenase/delta 5->4-isomerase type 2) protein expression were more abundant in CLGN-overexpressing cells. CLGN knockdown using CRISPR/Cas9 (clustered regularly interspaced short palindromic repeats/clustered regularly interspaced short palindromic repeat-associated 9) method in HAC15 cells that carry the KCNJ5 mutation did not affect aldosterone production. To summarize, CLGN was upregulated and associated with aldosterone production via translational regulation of CYP11B2 in APAs.
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Affiliation(s)
- Kiyotaka Itcho
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Kenji Oki
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Celso E Gomez-Sanchez
- Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center and Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Elise P Gomez-Sanchez
- Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center and Department of Pharmacology and Toxicology, University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Haruya Ohno
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Kazuhiro Kobuke
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Gaku Nagano
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Yoko Yoshii
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Ryuta Baba
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Noboru Hattori
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
| | - Masayasu Yoneda
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.I., K.O., H.O., K.K., G.N., Y.Y., R.B., N.H., M.Y.)
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21
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Abstract
The aim of this study was to investigate possible associations of nutrient intake on glaucoma in subjects of Japanese descent living in Los Angeles, CA.In this cross-sectional study, 581 Japanese American participants in Los Angeles underwent an interview, fundus photography, comprehensive physical, and blood examinations, along with determining the body mass index status and any confounding factors. CDSketch was used to measure the cup-disc ratio and rim width of each fundus in the retinal photographs. A multivariate logistic regression test with adjustment for confounding factors was used to assess the association between glaucoma and nutrient intake.A total of 61 of 581 participants were diagnosed with glaucoma in this study. Multivariate logistic regression analysis showed that a high intake of iron (odds ratio [OR]: 1.303, P = .004), low intake of vitamin A (OR: 0.365, P = .019), and vegetable fat (OR: 0.957, P = .004) were associated with an increased risk of glaucoma.Current findings showed that high iron intake and low vitamin A and vegetable fat intake appeared to be associated with an increased risk of glaucoma in subjects of Japanese descent living in the Los Angeles populations.
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Affiliation(s)
- Muhammad Yoserizal
- Department of Ophthalmology and Visual Science
- Jakarta Eye Centre, Jakarta, Indonesia
| | | | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Reo Kawano
- Center for Integrated Medical Research, Hiroshima University Hospital, Hiroshima, Japan
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22
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Yamashita M, Okubo H, Kobuke K, Ohno H, Oki K, Yoneda M, Tanaka J, Hattori N. Alteration of gut microbiota by a Westernized lifestyle and its correlation with insulin resistance in non-diabetic Japanese men. J Diabetes Investig 2019; 10:1463-1470. [PMID: 30901505 PMCID: PMC6825921 DOI: 10.1111/jdi.13048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2018] [Revised: 03/11/2019] [Accepted: 03/19/2019] [Indexed: 01/16/2023] Open
Abstract
AIMS/INTRODUCTION The severity of insulin resistance is higher in Japanese-American people with American lifestyles than in native Japanese people with Japanese lifestyles. Recently, the role of gut microbiota in the control of host metabolic homeostasis and organ physiology has been recognized. In addition, gut microbiota alterations have been suggested to contribute to pathogenesis of insulin resistance. The principle aim of the present study was to evaluate the impact of a Westernized lifestyle on the gut microbiota of Japanese-Americans versus native Japanese, and its correlation with insulin resistance. MATERIALS AND METHODS A total of 14 native Japanese men living in Hiroshima, Japan, and 14 Japanese-American men living in Los Angeles, USA, were included. A 75-g oral glucose tolerance test was carried out for all participants to assess their glucose tolerance, and normal glucose tolerance was observed. We compared the insulin response with oral glucose load, the Matsuda Index, and the composition of the gut microbiota between the native Japanese and Japanese-American men. RESULTS Japanese-American men showed higher area under the curve values for serum insulin concentrations during the oral glucose tolerance test and lower Matsuda Index than native Japanese men. Gut microbiota composition of the Japanese-American men was different; in particular, they showed a relatively lower abundance of Odoribacter than native Japanese men. The ratio between relative abundance of Odoribacter and Matsuda Index was positively correlated between the two groups. CONCLUSIONS Our findings suggest that Westernized lifestyles alter gut microbiota, and its alteration might induce insulin resistance in non-diabetic Japanese men.
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Affiliation(s)
- Mami Yamashita
- Department of Molecular and Internal MedicineGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Hirofumi Okubo
- Department of Molecular and Internal MedicineGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Kazuhiro Kobuke
- Department of Preventive Medicine for Diabetes and Lifestyle‐related DiseasesGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Haruya Ohno
- Department of Molecular and Internal MedicineGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Kenji Oki
- Department of Molecular and Internal MedicineGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Masayasu Yoneda
- Department of Preventive Medicine for Diabetes and Lifestyle‐related DiseasesGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Junko Tanaka
- Department of EpidemiologyInfectious Disease Control and PreventionGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Noboru Hattori
- Department of Molecular and Internal MedicineGraduate School of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
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23
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Sugihiro T, Yoneda M, Ohno H, Oki K, Hattori N. Associations of nutrient intakes with obesity and diabetes mellitus in the longitudinal medical surveys of Japanese Americans. J Diabetes Investig 2019; 10:1229-1236. [PMID: 30663246 PMCID: PMC6717818 DOI: 10.1111/jdi.13010] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 10/25/2018] [Revised: 12/17/2018] [Accepted: 01/08/2019] [Indexed: 12/29/2022] Open
Abstract
AIMS/INTRODUCTION Our previous survey of two Japanese populations, with different lifestyles but identical genetic dispositions, showed that Japanese Americans had different dietary intakes and higher prevalences of obesity and diabetes mellitus, compared with the native Japanese population. The present study examined whether Westernized dietary habits could affect the development of obesity or diabetes. MATERIALS AND METHODS This study included 765 individuals with normal glucose tolerance at baseline medical examinations (1986 or 1989 in Los Angeles and in 1988 or 1992 in Hawaii) who subsequently completed follow-up medical examinations several years later. The participants were categorized at baseline as "lean" (576 individuals, body mass index of <25 kg/m2 ) or "obese" (189 individuals, body mass index of ≥25 kg/m2 ). Nutrient intakes were analyzed for associations with the development of obesity or diabetes using Cox's proportional hazard model. RESULTS A total of 41 lean participants developed diabetes, which was not associated with any nutrient intakes (mean follow up 10.8 ± 6.6 years). A total of 36 obese participants developed diabetes, which was positively associated with intakes of animal protein, animal fat and saturated fatty acid (mean follow up 10.7 ± 6.3 years). A total of 85 lean participants became obese, which was positively associated with intakes of simple carbohydrates, sugar and fructose, as well as inversely associated with intakes of vegetable protein and complex carbohydrates (mean follow up 10.4 ± 6.5 years). CONCLUSIONS In the Japanese Americans, different nutrient intakes affected the development of obesity and diabetes. Furthermore, the associations of nutrient intakes with diabetes development varied according to the presence or absence of obesity.
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Affiliation(s)
- Takafumi Sugihiro
- Department of Molecular and Internal MedicineInstitute of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Masayasu Yoneda
- Department of Molecular and Internal MedicineInstitute of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Haruya Ohno
- Department of Molecular and Internal MedicineInstitute of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Kenji Oki
- Department of Molecular and Internal MedicineInstitute of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
| | - Noboru Hattori
- Department of Molecular and Internal MedicineInstitute of Biomedical and Health SciencesHiroshima UniversityHiroshimaJapan
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24
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Ding HT, Hegde P, Kaczmarek O, Karsch F, Lahiri A, Li ST, Mukherjee S, Ohno H, Petreczky P, Schmidt C, Steinbrecher P. Chiral Phase Transition Temperature in (2+1)-Flavor QCD. Phys Rev Lett 2019; 123:062002. [PMID: 31491166 DOI: 10.1103/physrevlett.123.062002] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Indexed: 06/10/2023]
Abstract
We present a lattice-QCD-based determination of the chiral phase transition temperature in QCD with two degenerate, massless quarks and a physical strange quark mass using lattice QCD calculations with the highly improved staggered quarks action. We propose and calculate two novel estimators for the chiral transition temperature for several values of the light quark masses, corresponding to Goldstone pion masses in the range of 58 MeV≲m_{π}≲163 MeV. The chiral phase transition temperature is determined by extrapolating to vanishing pion mass using universal scaling analysis. Finite-volume effects are controlled by extrapolating to the thermodynamic limit using spatial lattice extents in the range of 2.8-4.5 times the inverse of the pion mass. Continuum extrapolations are carried out by using three different values of the lattice cutoff, corresponding to lattices with temporal extents N_{τ}=6, 8, and 12. After thermodynamic, continuum, and chiral extrapolations, we find the chiral phase transition temperature T_{c}^{0}=132_{-6}^{+3} MeV.
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Affiliation(s)
- H-T Ding
- Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
| | - P Hegde
- Center for High Energy Physics, Indian Institute of Science, Bangalore 560012, India
| | - O Kaczmarek
- Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
- Fakultät für Physik, Universität Bielefeld, D-33615 Bielefeld, Germany
| | - F Karsch
- Fakultät für Physik, Universität Bielefeld, D-33615 Bielefeld, Germany
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - Anirban Lahiri
- Fakultät für Physik, Universität Bielefeld, D-33615 Bielefeld, Germany
| | - S-T Li
- Key Laboratory of Quark & Lepton Physics (MOE) and Institute of Particle Physics, Central China Normal University, Wuhan 430079, China
| | - Swagato Mukherjee
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - H Ohno
- Center for Computational Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-8577, Japan
| | - P Petreczky
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
| | - C Schmidt
- Fakultät für Physik, Universität Bielefeld, D-33615 Bielefeld, Germany
| | - P Steinbrecher
- Physics Department, Brookhaven National Laboratory, Upton, New York 11973, USA
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25
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Kaichi Y, Tanitame K, Terada H, Itakura H, Ohno H, Yoneda M, Takahashi Y, Akiyama Y, Awai K. Thyroid-associated Orbitopathy: Quantitative Evaluation of the Orbital Fat Volume and Edema Using IDEAL-FSE. Eur J Radiol Open 2019; 6:182-186. [PMID: 31193388 PMCID: PMC6526225 DOI: 10.1016/j.ejro.2019.05.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 05/14/2019] [Indexed: 01/19/2023] Open
Abstract
Background and Purpose To compare orbital quantitative data obtained by fast spin-echo iterative decomposition of water and fat with echo asymmetry and least-squares estimation (FSE-IDEAL) in patients with thyroid-associated orbitopathy (TAO) and healthy controls and to investigate the characteristics of these data in TAO patients. Materials and Methods Twenty-two TAO patients (4 males and 18 females; median age 51.0 years) and 22 healthy subjects (5 males and 17 females; median age 50.5 years) underwent orbital T2-weighted FSE-IDEAL. The water fraction in orbital fat was defined as the signal intensity (SI) water / (SI water + SI fat). The orbital fat volume was measured on fat images. The degree of proptosis was evaluated using in-phase imaging. Mann–Whitney U test was used to compare these quantitative data in the two groups. In TAO patients we ascertained the correlation among these values with the Spearman's rank correlation coefficient. Results In TAO patients, the water fraction (right and left, p = 0.04), fat volume (right and left, p = 0.03) and degree of proptosis (right and left, p < 0.01) were higher than in the controls. In TAO patients, only the water fraction and the fat volume of left orbit showed negative correlation (p = 0.01). Conclusion The water fraction of orbital fat, the orbital fat volume and the degree of proptosis obtained with FSE-IDEAL were higher in TAO patients than in the controls. The water fraction was a new parameter for differentiating between TAO patients and healthy subjects.
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Affiliation(s)
- Yoko Kaichi
- Diagnostic Radiology, Graduate School and Institute of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
| | - Keizo Tanitame
- Department of Diagnostic Radiology, Hiroshima Prefectural Hospital, Ujinakanda 1-5-54, Minami-ku, Hiroshima 734-8530, Japan
| | - Hiroaki Terada
- Diagnostic Radiology, Graduate School and Institute of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
| | - Hideki Itakura
- Itakura Eye Clinic, Ochiai 5-24-8, Asakita-ku, Hiroshima 739-1731, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Institute of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Institute of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
| | - Yuji Takahashi
- Department of Clinical Radiology, Hiroshima University Hospital, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
| | - Yuji Akiyama
- Diagnostic Radiology, Graduate School and Institute of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
| | - Kazuo Awai
- Diagnostic Radiology, Graduate School and Institute of Biomedical and Health Sciences, Hiroshima University, Kasumi 1-2-3, Minami-ku, Hiroshima 734-8551, Japan
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Yamabe M, Kuroda M, Hirosawa Y, Kamino H, Ohno H, Yoneda M. Comparison of insulin glargine 300 U/mL and insulin degludec using flash glucose monitoring: A randomized cross-over study. J Diabetes Investig 2019; 10:352-357. [PMID: 29989335 PMCID: PMC6400163 DOI: 10.1111/jdi.12894] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [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: 05/15/2018] [Revised: 06/21/2018] [Accepted: 07/02/2018] [Indexed: 12/12/2022] Open
Abstract
AIMS/INTRODUCTION We compared the efficacy and safety of insulin glargine 300 U/mL (Gla300) and insulin degludec U100 (Deg) using a flash glucose monitoring system. MATERIALS AND METHODS A total of 24 Japanese patients with type 2 diabetes were randomized to receive once-daily Gla300 (n = 12) or Deg (n = 12) in the morning. The primary end-points were the mean percentage of time in the target glucose range (70-179 mg/dL) and hypoglycemia (<70 mg/dL), as measured using flash glucose monitoring during the last 7 days of each 14-day period. RESULTS The percentages of time with glucose levels <70 mg/dL were not significantly different between the two insulin treatments. No significant differences were observed in the percentages of time with glucose levels of 70-179 mg/dL or ≥180 mg/dL. The percentage of time with nocturnal hypoglycemia with Gla300 was significantly lower than that with Deg treatment (P = 0.021). This difference might be attributable to the difference in the duration of action between the two formulations, and the incidence of nocturnal hypoglycemia with Deg treatment was associated with the concomitant use of metformin (P = 0.035). CONCLUSIONS The two formulations were comparable in efficacy, whereas the incidence of nocturnal hypoglycemia was significantly lower with Gla300. Thus, the present study suggests that, although Gla300 and Deg are comparable long-acting insulin analogs, Gla300 is safer with respect to the incidence of hypoglycemia.
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Affiliation(s)
- Mizuho Yamabe
- Department of Internal MedicineMurakami Memorial HospitalOnomichiHiroshimaJapan
| | - Mami Kuroda
- Department of Internal MedicineMurakami Memorial HospitalOnomichiHiroshimaJapan
| | - Yasuyo Hirosawa
- Department of Internal MedicineMurakami Memorial HospitalOnomichiHiroshimaJapan
| | - Hiromi Kamino
- Department of Internal MedicineMurakami Memorial HospitalOnomichiHiroshimaJapan
| | - Haruya Ohno
- Department of Endocrinology and Diabetic MedicineHiroshima University HospitalHiroshima CityHiroshimaJapan
| | - Masayasu Yoneda
- Department of Endocrinology and Diabetic MedicineHiroshima University HospitalHiroshima CityHiroshimaJapan
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Okubo H, Nakatsu Y, Kushiyama A, Yamamotoya T, Matsunaga Y, Inoue MK, Fujishiro M, Sakoda H, Ohno H, Yoneda M, Ono H, Asano T. Gut Microbiota as a Therapeutic Target for Metabolic Disorders. Curr Med Chem 2019; 25:984-1001. [PMID: 28990516 DOI: 10.2174/0929867324666171009121702] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2017] [Revised: 09/05/2017] [Accepted: 09/29/2017] [Indexed: 02/06/2023]
Abstract
BACKGROUND Gut microbiota play a vital role not only in the digestion and absorption of nutrients, but also in homeostatic maintenance of host immunity, metabolism and the gut barrier. Recent evidence suggests that gut microbiota alterations contribute to the pathogenesis of metabolic disorders. OBJECTIVE AND METHOD In this review, we discuss the association between the gut microbiota and metabolic disorders, such as obesity, type 2 diabetes mellitus and non-alcoholic fatty liver disease, and the contribution of relevant modulating interventions, focusing on recent human studies. RESULTS Several studies have identified potential causal associations between gut microbiota and metabolic disorders, as well as the underlying mechanisms. The effects of modulating interventions, such as prebiotics, probiotics, fecal microbiota transplantation, and other new treatment possibilities on these metabolic disorders have also been reported. CONCLUSION A growing body of evidence highlights the role of gut microbiota in the development of dysbiosis, which in turn influences host metabolism and disease phenotypes. Further studies are required to elucidate the precise mechanisms by which gut microbiota-derived mediators induce metabolic disorders and modulating interventions exert their beneficial effects in humans. The gut microbiota represents a novel potential therapeutic target for a range of metabolic disorders.
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Affiliation(s)
- Hirofumi Okubo
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yusuke Nakatsu
- Department of Medical Chemistry, Division of Molecular Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Akifumi Kushiyama
- Division of Diabetes and Metabolism, The Institute for Adult Diseases, Asahi Life Foundation, Tokyo, Japan
| | - Takeshi Yamamotoya
- Department of Medical Chemistry, Division of Molecular Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Yasuka Matsunaga
- Department of Medical Chemistry, Division of Molecular Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Masa-Ki Inoue
- Department of Medical Chemistry, Division of Molecular Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
| | - Midori Fujishiro
- Division of Diabetes and Metabolic Diseases, Nihon University School of Medicine, Tokyo, Japan
| | - Hideaki Sakoda
- Department of Internal Medicine, Division of Neurology, Respirology, Endocrinology and Metabolism, Faculty of Medicine, University of Miyazaki, Miyazaki, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hiraku Ono
- Department of Clinical Cell Biology, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Tomoichiro Asano
- Department of Medical Chemistry, Division of Molecular Medical Science, Graduate School of Biomedical Sciences, Hiroshima University, Hiroshima, Japan
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Itcho K, Oki K, Kobuke K, Ohno H, Yoneda M, Hattori N. Angiotensin 1-7 suppresses angiotensin II mediated aldosterone production via JAK/STAT signaling inhibition. J Steroid Biochem Mol Biol 2019; 185:137-141. [PMID: 30125658 DOI: 10.1016/j.jsbmb.2018.08.007] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 08/03/2018] [Accepted: 08/12/2018] [Indexed: 01/27/2023]
Abstract
Angiotensin 1-7 (Ang 1-7), which is a protein cleaved from angiotensin II (A-II), binds to the MAS receptor. Ang 1-7 has been demonstrated to exert protective effects against A-II-mediated cardiac, atherosclerotic, and renal damages. The aims of our study were to demonstrate the inhibitory role of Ang 1-7 in A-II-mediated aldosterone production by interacting with the MAS receptor in human adrenocortical carcinoma (HAC15) cells, and clarify the intracellular signaling mechanisms underlying the inhibition of aldosterone production by Ang 1-7. Ang 1-7 significantly suppressed A-II-stimulated aldosterone production, and partially abrogated A-II-induced upregulation of CYP11B2 expression. Treatment with a selective Ang 1-7 antagonist abrogated Ang 1-7-mediated inhibition of aldosterone production in HAC15 cells. Incubation of A-II-treated HAC15 cells with conditioned medium containing Ang 1-7 was demonstrated to suppress A-II-mediated aldosterone production and CYP11B2 expression. Proteomic analysis showed that Ang 1-7 predominantly inhibited the phosphorylation of JAK-STAT proteins in A-II stimulated HAC15 cells. Treatment of HAC15 cells with a STAT3 inhibitor partially but significantly repressed A-II-mediated aldosterone production by 63.2%. Similarly, treatment with a STAT5 inhibitor significantly abrogated A-II-stimulated aldosterone production in HAC15 cells by 60.7%. In conclusion, we demonstrated that Ang 1-7 negatively regulates A-II-mediated aldosterone production, and the observed inhibition of aldosterone production was associated with JAK/STAT signaling in human adrenal cells. Therefore, activation of Ang 1-7 or stimulation of the MAS receptor, which inhibits aldosterone production, is a promising therapeutic approach for the prevention of cardiovascular events that can directly affect the target organs.
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Affiliation(s)
- Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
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Baba R, Oki K, Kobuke K, Itcho K, Okubo H, Ohno H, Yoneda M, Hattori N. Measurement of midnight ACTH levels is useful for the evaluation of midnight cortisol levels. Steroids 2018; 140:179-184. [PMID: 30414423 DOI: 10.1016/j.steroids.2018.10.011] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/24/2018] [Accepted: 10/29/2018] [Indexed: 01/15/2023]
Abstract
OBJECTIVE Elevated midnight cortisol levels induced by non-suppressed ACTH levels may lead to false-positive results for hypercortisolism in patients with adrenal incidentaloma. We investigated whether plasma ACTH-associated high midnight serum cortisol levels are correlated with other endocrinological findings with respect to hypothalamic-pituitaryadrenal function or hypercortisolism status. METHODS Two-hundred-forty-six patients with adrenocortical adenoma were evaluated via measurements of midnight ACTH and cortisol levels, a 1-mg dexamethasone suppression test (DST), and a cosyntropin-releasing hormone (CRH) stimulation test. Patients were divided into four groups according to their midnight plasma ACTH levels. RESULTS The groups with higher midnight ACTH levels had significantly higher basal ACTH levels. A positive relationship was observed between midnight serum cortisol and serum cortisol in the 1-mg DST for all groups; stronger associations were observed in the group with lower midnight ACTH. In the CRH test, peak, delta, and sigma ACTH had significant inverse relationships with midnight cortisol levels in the lowest and second lowest midnight ACTH groups. Patients with midnight cortisol levels >3.5 μg/dL were further divided into two groups according to whether their midnight plasma ACTH levels were below or above 10.0 pg/mL. There were significantly fewer patients with hypercortisolism in the higher ACTH group; midnight serum cortisol levels were associated with hypercortisolism only in the lower ACTH group. CONCLUSION We demonstrated that midnight ACTH-associated cortisol values were not correlated with other endocrinological findings or hypercortisolism state. Measurement of midnight ACTH levels is important, and careful evaluation is needed for patients with higher midnight ACTH levels.
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Affiliation(s)
- Ryuta Baba
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
| | - Kazuhiro Kobuke
- Department of Preventive Medicine for Diabetes and Lifestyle-related Disease, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hirofumi Okubo
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Preventive Medicine for Diabetes and Lifestyle-related Disease, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Kobuke K, Oki K, Gomez-Sanchez CE, Ohno H, Itcho K, Yoshii Y, Yoneda M, Hattori N. Purkinje Cell Protein 4 Expression Is Associated With DNA Methylation Status in Aldosterone-Producing Adenoma. J Clin Endocrinol Metab 2018; 103:965-971. [PMID: 29294065 DOI: 10.1210/jc.2017-01996] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 12/20/2017] [Indexed: 11/19/2022]
Abstract
CONTEXT Aldosterone production is stimulated by activation of calcium signaling in aldosterone-producing adenomas (APAs), and epigenetic factors such as DNA methylation may be associated with the expression of genes involved in aldosterone regulation. OBJECTIVE Our aim was to investigate the DNA methylation of genes related to calcium signaling cascades in APAs and the association of mutations in genes linked to APAs with DNA methylation levels. METHODS Nonfunctioning adrenocortical adenoma (n = 12) and APA (n = 35) samples were analyzed. The KCNJ5 T158A mutation was introduced into human adrenocortical cell lines (HAC15 cells) using lentiviral delivery. DNA methylation array analysis was conducted using adrenal tumor samples and HAC15 cells. RESULTS The Purkinje cell protein 4 (PCP4) gene was one of the most hypomethylated in APAs. DNA methylation levels in two sites of PCP4 showed a significant inverse correlation with messenger RNA expression in adrenal tumors. Bioinformatics and multiple regression analysis revealed that CCAAT/enhancer binding protein alpha (CEBPA) may bind to the methylation site of the PCP4 promoter. According to chromatin immunoprecipitation assay, CEBPA was bound to the PCP4 hypomethylated region by chromatin immunoprecipitation assay. There were no significant differences in PCP4 methylation levels among APA genotypes. Moreover, KCNJ5 T158A did not influence PCP4 methylation levels in HAC15 cells. CONCLUSIONS We showed that the PCP4 promoter was one of the most hypomethylated in APAs and that PCP4 transcription may be associated with demethylation as well as with CEBPA in APAs. KCNJ5 mutations known to result in aldosterone overproduction were not related to PCP4 methylation in either clinical or in vitro studies.
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Affiliation(s)
- Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Celso E Gomez-Sanchez
- Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center and University of Mississippi Medical Center, Jackson, Mississippi
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoko Yoshii
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Fujita K, Kajiyama M, Liu Y, Nakamura N, Ohno H. Hydrated ionic liquids as a liquid chaperon for refolding of aggregated recombinant protein expressed in Escherichia coli. Chem Commun (Camb) 2018; 52:13491-13494. [PMID: 27801474 DOI: 10.1039/c6cc06999a] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We have succeeded in refolding of aggregated recombinant protein from Escherichia coli in hydrated ionic liquids. In cholinium dihydrogen phosphate containing a limited amount of water molecules, aggregated solid cellulase was dissolved and refolding was successfully carried out without further processing.
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Affiliation(s)
- K Fujita
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan and Functional Ionic Liquid Laboratories (FILL), Graduate School of Engneering, Tokyo University of Agriculture and Technology, Japan
| | - M Kajiyama
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan and Functional Ionic Liquid Laboratories (FILL), Graduate School of Engneering, Tokyo University of Agriculture and Technology, Japan
| | - Y Liu
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan
| | - N Nakamura
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan and Functional Ionic Liquid Laboratories (FILL), Graduate School of Engneering, Tokyo University of Agriculture and Technology, Japan
| | - H Ohno
- Department of Biotechnology, Tokyo University of Agriculture and Technology, Koganei, Tokyo 184-8588, Japan and Functional Ionic Liquid Laboratories (FILL), Graduate School of Engneering, Tokyo University of Agriculture and Technology, Japan
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Ohno H, Tamura M, Kawakubo K, Gunji A, Kashihara H. Risk Factors for Ischemic Heart Disease in an Urban Area of Japan: A Case-Control Study in AMHTS. Methods Inf Med 2018. [DOI: 10.1055/s-0038-1634341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
AbstractObjectives: In Japan controversy exists as to whether or not the risk factors for ischemic heart disease (IHD) are the same as in western countries. We conducted a case-control study on IHD to clarify the risk factors in males in an urban area of Japan using our automated multiphasic health testing and services (AMHTS) system. Method: Cases were the clients who took the health check-up between January 1987 and July 1994 and had onset of IHD after the check-up. For each case five clients were selected as controls by conditional matching. The check-up data were compared between cases and controls 11 years, 6 years and just before the onset of the heart diseases. Results: The statistically significant items were as follows: (1) Eleven years before the onset: Total cholesterol (T-Chol) for myocardial infarction (MI), and fasting blood sugar (FBS) for angina pectoris (AP). (2) Six years before the onset: T-Chol, electrocardiographic (ECG) findings and the complaint of palpitation or breathlessness for MI, and FBS and palpitation or breathlessness for AP. (3) Just before the onset: T-Chol, the complaint of chest pain, FBS, smoking index and hypertensive status for MI and palpitation or breathlessness, ECG findings, chest pain, systolic blood pressure and erythrocyte sedimentation rate at 60 minutes for AP. In conclusion, the risk factors for MI in males in an urban area of Japan are the same as in western countries. The most significant risk factor for AP in males in an urban area of Japan is fasting blood sugar.
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Itcho K, Oki K, Kobuke K, Yoshii Y, Ohno H, Yoneda M, Hattori N. Aberrant G protein-receptor expression is associated with DNA methylation in aldosterone-producing adenoma. Mol Cell Endocrinol 2018; 461:100-104. [PMID: 28870781 DOI: 10.1016/j.mce.2017.08.019] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2017] [Revised: 08/25/2017] [Accepted: 08/25/2017] [Indexed: 01/29/2023]
Abstract
This study aimed to evaluate the methylation levels of G protein-coupled receptor (GPCR) related genes and the effects of methylation on mRNA expression levels in aldosterone-producing adenoma (APA). DNA methylation array and transcriptome analysis were applied in non-functioning adrenocortical adenoma (NFA) and APA. We investigated 192 GPCR-related genes and found hypo-methylation in the promoter region of 66 of these genes in APA. An integration study between microarray and methylation analysis revealed that HTR4, MC2R, TACR1, GRM3, and PTGER1 showed hypo-methylation and up-regulation of mRNA in APA. qPCR analysis showed that HTR4 and PTGER1 expression was 9.3-fold and 6.6-fold higher in APAs than in NFAs, respectively, whereas expression of the other genes was not different between the groups. Methylation of HTR4 and PTGER1 at positions -229 and -666 from the transcription start site, respectively, showed a significant inverse correlation with their mRNA levels. Methylation levels were not associated with KCNJ5 or ATP1A1 mutations in human adrenal samples. We demonstrated an increased incidence of CpG island demethylation of GPCR-related gene in APA. The expression of two receptors, HTR4 and PTGER1, showed a strong association with DNA methylation.
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Affiliation(s)
- Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan.
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yoko Yoshii
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Kobuke K, Oki K, Gomez-Sanchez CE, Gomez-Sanchez EP, Ohno H, Itcho K, Yoshii Y, Yoneda M, Hattori N. Calneuron 1 Increased Ca 2+ in the Endoplasmic Reticulum and Aldosterone Production in Aldosterone-Producing Adenoma. Hypertension 2017; 71:125-133. [PMID: 29109191 DOI: 10.1161/hypertensionaha.117.10205] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2017] [Revised: 09/01/2017] [Accepted: 10/10/2017] [Indexed: 11/16/2022]
Abstract
Aldosterone production is initiated by angiotensin II stimulation and activation of intracellular Ca2+ signaling. In aldosterone-producing adenoma (APA) cells, the activation of intracellular Ca2+ signaling is independent of the renin-angiotensin-aldosterone systems. The purpose of our study was to clarify molecular mechanisms of aldosterone production related to Ca2+ signaling. Transcriptome analysis revealed that the CALN1 gene encoding calneuron 1 had the strongest correlation with CYP11B2 (aldosterone synthase) among genes encoding Ca2+-binding proteins in APA. CALN1 modulation and synthetic or fluorescent compounds were used for functional studies in human adrenocortical carcinoma (HAC15) cells. CALN1 expression was 4.4-fold higher in APAs than nonfunctioning adrenocortical adenomas. CALN1 expression colocalized with CYP11B2 expression as investigated using immunohistochemistry in APA and zona glomerulosa of male rats fed by a low-salt diet. CALN1 expression was detected in the endoplasmic reticulum (ER) by using GFP-fused CALN1, CellLight ER-RFP, and the corresponding antibodies. CALN1-overexpressing HAC15 cells showed increased Ca2+ in the ER and cytosol fluorescence-based studies. Aldosterone production was potentiated in HAC15 cells by CALN1 expression, and dose-responsive inhibition with TMB-8 showed that CALN1-mediated Ca2+ storage in ER involved sarcoendoplasmic reticulum calcium transport ATPase. The silencing of CALN1 decreased Ca2+ in ER, and abrogated angiotensin II- or KCNJ5 T158A-mediated aldosterone production in HAC15 cells. Increased CALN1 expression in APA was associated with elevated Ca2+ storage in ER and aldosterone overproduction. Suppression of CALN1 expression prevented angiotensin II- or KCNJ5 T158A-mediated aldosterone production in HAC15 cells, suggesting that CALN1 is a potential therapeutic target for excess aldosterone production.
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Affiliation(s)
- Kazuhiro Kobuke
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Kenji Oki
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.).
| | - Celso E Gomez-Sanchez
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Elise P Gomez-Sanchez
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Haruya Ohno
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Kiyotaka Itcho
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Yoko Yoshii
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Masayasu Yoneda
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
| | - Noboru Hattori
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (K.K., K.O., H.O., K.I., Y.Y., M.Y., N.H.); Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, Jackson, MS (C.E.G.-S., E.P.G.-S.); and University of Mississippi Medical Center, Jackson (C.E.G.-S., E.P.G.-S.)
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Konishi S, Yoshida H, Ohno H, Naruse Y, Coffin DO, Walthers CR, Binning KE. Experiments on a Ceramic Electrolysis Cell and a Palladium Diffuser at the Tritium Systems Test Assembly. ACTA ACUST UNITED AC 2017. [DOI: 10.13182/fst85-a24585] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- S. Konishi
- Japan Atomic Energy Research Institute Tokai-mura, Ibaraki-ken, Japan
| | - H. Yoshida
- Japan Atomic Energy Research Institute Tokai-mura, Ibaraki-ken, Japan
| | - H. Ohno
- Japan Atomic Energy Research Institute Tokai-mura, Ibaraki-ken, Japan
| | - Y. Naruse
- Japan Atomic Energy Research Institute Tokai-mura, Ibaraki-ken, Japan
| | - D. O. Coffin
- Los Alamos National Laboratory Los Alamos, NM 87545 (505)667-5868
| | - C. R. Walthers
- Los Alamos National Laboratory Los Alamos, NM 87545 (505)667-5868
| | - K. E. Binning
- Los Alamos National Laboratory Los Alamos, NM 87545 (505)667-5868
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Kubota M, Yoneda M, Maeda N, Ohno H, Oki K, Funahashi T, Shimomura I, Hattori N. Westernization of lifestyle affects quantitative and qualitative changes in adiponectin. Cardiovasc Diabetol 2017; 16:83. [PMID: 28683803 PMCID: PMC5501538 DOI: 10.1186/s12933-017-0565-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Accepted: 06/20/2017] [Indexed: 11/10/2022] Open
Abstract
Background Although Japanese–Americans and native Japanese share the same genetic predispositions, they live different lifestyles, resulting in insulin resistance in Japanese–Americans. We investigated whether the quantitative and qualitative changes in adiponectin (APN) due to differences in lifestyle contribute to the development of insulin resistance. Methods We evaluated 325 native Japanese in Hiroshima, Japan and 304 Japanese–Americans in Los Angeles, the United States, who were aged between 30 and 70 years and underwent medical examinations between 2009 and 2010. All participants underwent a 75-g oral glucose tolerance test (OGTT) to assess their glucose tolerance. The insulin response to oral glucose load, the Matsuda index, total APN levels, and C1q-APN/total-APN ratios were compared between native Japanese and Japanese–Americans. Results Compared with the native Japanese, the Japanese–Americans had significantly lower Matsuda index and higher area under the curve values for serum insulin concentration during OGTT in the normal glucose tolerance (NGT) and impaired glucose tolerance (IGT) groups, but not in the diabetes mellitus (DM) group. Furthermore, the Japanese–Americans had significantly lower total APN levels and higher C1q-APN/total-APN ratios than the native Japanese in the NGT and IGT groups, but not in the DM group. Conclusions This study suggested that, in Japanese people, the westernization of their lifestyle might affect quantitative and qualitative changes in APN and induce insulin resistance. Electronic supplementary material The online version of this article (doi:10.1186/s12933-017-0565-z) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Mitsunobu Kubota
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan.
| | - Norikazu Maeda
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.,Department of Metabolism and Atherosclerosis, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
| | - Tohru Funahashi
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.,Department of Metabolism and Atherosclerosis, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Iichiro Shimomura
- Department of Metabolic Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Noboru Hattori
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minami-ku, Hiroshima, 734-8551, Japan
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Ohno H, Nakagawa M, Kishimori C, Fukutsuka K, Honjo G. Cryptic t(3;8)(q27;q24) and/or MYC-BCL6 linkage associated with MYC expression by immunohistochemistry is frequent in multiple-hit B-cell lymphomas. Blood Cancer J 2017; 7:e578. [PMID: 28665415 PMCID: PMC5520406 DOI: 10.1038/bcj.2017.59] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Affiliation(s)
- H Ohno
- Department of Hematology, Tenri Hospital, Tenri, Japan.,Tenri Institute of Medical Research, Tenri, Japan
| | - M Nakagawa
- Tenri Institute of Medical Research, Tenri, Japan
| | - C Kishimori
- Tenri Institute of Medical Research, Tenri, Japan
| | - K Fukutsuka
- Tenri Institute of Medical Research, Tenri, Japan
| | - G Honjo
- Department of Diagnostic Pathology, Tenri Hospital, Tenri, Japan
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Itcho K, Yoshii Y, Ohno H, Oki K, Shinohara M, Irino Y, Toh R, Ishida T, Hirata KI, Yoneda M. Association between Serum Elaidic Acid Concentration and Insulin Resistance in Two Japanese Cohorts with Different Lifestyles. J Atheroscler Thromb 2017; 24:1206-1214. [PMID: 28484112 PMCID: PMC5742366 DOI: 10.5551/jat.39164] [Citation(s) in RCA: 14] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Aim: Many cohort studies have shown that increased trans fatty acid (TFA) intake increases the risk of developing coronary heart disease. However, whether TFA intake is directly associated with the development of diabetes mellitus (DM) remains unknown. Methods: We performed the 75-g oral glucose tolerance test in two Japanese cohorts: a cohort of 454 native Japanese living in Hiroshima, Japan, and a cohort of 426 Japanese-Americans living in Los Angeles, USA, who shared identical genetic predispositions but had different lifestyles. Serum elaidic acid concentration was measured and compared, and its association with insulin resistance was assessed. Results: Serum elaidic acid concentrations were significantly higher in the Japanese-Americans (median, 18.2 µmol/L) than in the native Japanese (median, 11.0 µmol/L). The serum elaidic acid concentrations in the native Japanese DM group (16.0 µmol/L) were significantly higher compared with those in the normal glucose tolerance (10.8 µmol/L) and impaired glucose tolerance (11.7 µmol/L) groups. Multiple linear regression analyses showed that serum elaidic acid concentrations were significantly positively associated with homeostasis model assessment for insulin resistance (HOMA-IR) values after adjusting for various factors. Conclusions: These results suggest that excessive TFA intake worsens insulin resistance and increases the risk of developing DM even in the native Japanese, whose intakes of animal fat and simple carbohydrates were presumed to be lower than those of the Japanese-Americans.
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Affiliation(s)
- Kiyotaka Itcho
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Yoko Yoshii
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
| | - Masakazu Shinohara
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Yasuhiro Irino
- Division of Evidence-Based Laboratory Medicine, Kobe University Graduate School of Medicine
| | - Ryuji Toh
- Division of Evidence-Based Laboratory Medicine, Kobe University Graduate School of Medicine
| | - Tatsuro Ishida
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Ken-Ichi Hirata
- Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University
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Kaichi Y, Tanitame K, Itakura H, Ohno H, Yoneda M, Takahashi Y, Akiyama Y, Awai K. Orbital Fat Volumetry and Water Fraction Measurements Using T2-Weighted FSE-IDEAL Imaging in Patients with Thyroid-Associated Orbitopathy. AJNR Am J Neuroradiol 2016; 37:2123-2128. [PMID: 27365323 DOI: 10.3174/ajnr.a4859] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Accepted: 05/08/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND AND PURPOSE The quantitative evaluation of orbital fat proliferation and edema and the assessment of extraocular muscles are useful for diagnosing and monitoring thyroid-associated orbitopathy. To evaluate therapy-induced quantitative changes in the orbital fat of patients with thyroid-associated orbitopathy, we performed volumetric and water fraction measurements by using T2-weighted FSE iterative decomposition of water and fat with echo asymmetry and least-squares estimation (FSE-IDEAL) imaging. MATERIALS AND METHODS Orbital FSE-IDEAL images of 30 volunteers were acquired twice within 1 week. Nine patients with thyroid-associated orbitopathy underwent FSE-IDEAL imaging before and after methylprednisolone pulse therapy, and the treatment results were assessed by using their pre- and post-methylprednisolone pulse therapy clinical activity scores. We performed volumetric and water fraction measurements of orbital fat by using FSE-IDEAL imaging and evaluated interscan differences in the volunteers. In patients with thyroid-associated orbitopathy, we compared pre- and posttherapy orbital fat measurements and assessed the correlation between the pretherapy values and clinical activity score improvement. RESULTS The reproducibility of results obtained by the quantitative evaluation of orbital fat in volunteers was acceptable. After methylprednisolone pulse therapy, the water fraction in the orbital fat of patients with thyroid-associated orbitopathy was significantly decreased (P < .001). There was a significant positive correlation between the pretherapy water fraction and clinical activity score improvement (right, r = 0.82; left, r = 0.79) and a significant negative correlation between the pretherapy volume and clinical activity score improvement (bilateral, r = -0.84). CONCLUSIONS Volumetric and water fraction measurements of orbital fat by using FSE-IDEAL imaging are feasible and useful for monitoring the effects of therapy and for predicting the response of patients with thyroid-associated orbitopathy to methylprednisolone pulse therapy.
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Affiliation(s)
- Y Kaichi
- From the Department of Diagnostic Radiology (Y.K., K.A.), Graduate School and Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - K Tanitame
- Department of Radiology (K.T.), Chugoku Rosai Hospital, Kure, Japan
| | - H Itakura
- Department of Ophthalmology and Visual Science (H.I.)
| | - H Ohno
- Department of Molecular and Internal Medicine (H.O., M.Y.), Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - M Yoneda
- Department of Molecular and Internal Medicine (H.O., M.Y.), Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Y Takahashi
- Department of Clinical Radiology (Y.T., Y.A.), Hiroshima University Hospital, Hiroshima, Japan
| | - Y Akiyama
- Department of Clinical Radiology (Y.T., Y.A.), Hiroshima University Hospital, Hiroshima, Japan
| | - K Awai
- From the Department of Diagnostic Radiology (Y.K., K.A.), Graduate School and Institute of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Yoshii Y, Oki K, Gomez-Sanchez CE, Ohno H, Itcho K, Kobuke K, Yoneda M. Hypomethylation of CYP11B2 in Aldosterone-Producing Adenoma. Hypertension 2016; 68:1432-1437. [PMID: 27754862 DOI: 10.1161/hypertensionaha.116.08313] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2016] [Revised: 06/30/2016] [Accepted: 09/25/2016] [Indexed: 01/05/2023]
Abstract
The purpose of this study was to evaluate the DNA methylation levels of steroidogenic enzyme genes in aldosterone-producing adenoma (APA) and the effects of gene mutations in APA on the DNA methylation levels. DNA methylation array analysis was conducted using nonfunctioning adrenocortical adenoma (n=12) and APA (n=35) samples, including some with a KCNJ5 mutation (n=21), an ATP1A1 mutation (n=5), and without the known mutations (n=9). The quantitative polymerase chain reaction assay was performed for the detection of CYP11B2 and CYP11B1 expression levels in nonfunctioning adrenocortical adenoma and APA. We introduced the KCNJ5 T158A mutation using lentivirus delivery in the human adrenocortical 15 cell line, and analyzed the effects of the mutation on DNA methylation levels. We analyzed the 83 presumed DNA methylation sites of steroidogenic enzymes. In APA, we found 7 hypomethylated sites in CYP11B2 and 1 hypomethylated and 6 hypermethylated sites in CYP11B1 There were no differences in the steroidogenic enzymes gene DNA methylation of peripheral leukocytes between nonfunctioning adrenocortical adenoma and APA. No CYP11B2 methylation level was associated with CYP11B2 transcription levels in APA. All methylation sites, except for a CYP11B2 region, showed no difference among APAs with or without gene mutations. Human adrenocortical 15 cells with the KCNJ5 mutation showed no changes in CYP11B2 or CYP11B1 methylation levels compared with control cells. We demonstrated that CYP11B2 in APA was extensively hypomethylated, and CYP11B2 methylation in the region with hypomethylation was not induced by KCNJ5 or ATP1A1 mutations that cause aldosterone overproduction in APA and a KCNJ5 mutation human adrenocortical 15 cells.
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Affiliation(s)
- Yoko Yoshii
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (Y.Y., K.O., H.O., K.I., K.K., M.Y.); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson (C.E.G.-S.)
| | - Kenji Oki
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (Y.Y., K.O., H.O., K.I., K.K., M.Y.); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson (C.E.G.-S.).
| | - Celso E Gomez-Sanchez
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (Y.Y., K.O., H.O., K.I., K.K., M.Y.); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson (C.E.G.-S.)
| | - Haruya Ohno
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (Y.Y., K.O., H.O., K.I., K.K., M.Y.); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson (C.E.G.-S.)
| | - Kiyotaka Itcho
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (Y.Y., K.O., H.O., K.I., K.K., M.Y.); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson (C.E.G.-S.)
| | - Kazuhiro Kobuke
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (Y.Y., K.O., H.O., K.I., K.K., M.Y.); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson (C.E.G.-S.)
| | - Masayasu Yoneda
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Japan (Y.Y., K.O., H.O., K.I., K.K., M.Y.); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson (C.E.G.-S.)
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Fukami S, Anekawa T, Zhang C, Ohno H. A spin-orbit torque switching scheme with collinear magnetic easy axis and current configuration. Nat Nanotechnol 2016; 11:621-625. [PMID: 26999481 DOI: 10.1038/nnano.2016.29] [Citation(s) in RCA: 77] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Accepted: 02/10/2016] [Indexed: 06/05/2023]
Abstract
Spin-orbit torque, a torque brought about by in-plane current via the spin-orbit interactions in heavy-metal/ferromagnet nanostructures, provides a new pathway to switch the magnetization direction. Although there are many recent studies, they all build on one of two structures that have the easy axis of a nanomagnet lying orthogonal to the current, that is, along the z or y axes. Here, we present a new structure with the third geometry, that is, with the easy axis collinear with the current (along the x axis). We fabricate a three-terminal device with a Ta/CoFeB/MgO-based stack and demonstrate the switching operation driven by the spin-orbit torque due to Ta with a negative spin Hall angle. Comparisons with different geometries highlight the previously unknown mechanisms of spin-orbit torque switching. Our work offers a new avenue for exploring the physics of spin-orbit torque switching and its application to spintronics devices.
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Affiliation(s)
- S Fukami
- Center for Spintronics Integrated Systems, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
- Center for Innovative Integrated Electronic Systems, Tohoku University, 468-1 Aoba, Aramaki, Aoba, Sendai 980-0845, Japan
| | - T Anekawa
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
| | - C Zhang
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
| | - H Ohno
- Center for Spintronics Integrated Systems, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
- Center for Innovative Integrated Electronic Systems, Tohoku University, 468-1 Aoba, Aramaki, Aoba, Sendai 980-0845, Japan
- Laboratory for Nanoelectronics and Spintronics, Research Institute of Electrical Communication, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980-8577, Japan
- WPI Advanced Institute for Materials Research, Tohoku University, 2-1-1 Katahira, Aoba, Sendai 980 8577, Japan
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Sekizawa O, Uruga T, Takagi Y, Nitta K, Kato K, Tanida H, Uesugi K, Hoshino M, Ikenaga E, Takeshita K, Takahashi S, Sano M, Aoyagi H, Watanabe A, Nariyama N, Ohashi H, Yumoto H, Koyama T, Senba Y, Takeuchi T, Furukawa Y, Ohata T, Matsushita T, Ishizawa Y, Kudo T, Kimura H, Yamazaki H, Tanaka T, Bizen T, Seike T, Goto S, Ohno H, Takata M, Kitamura H, Ishikawa T, Tada M, Yokoyama T, Iwasawa Y. SPring-8 BL36XU: Catalytic Reaction Dynamics for Fuel Cells. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1742-6596/712/1/012142] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kishimoto R, Oki K, Yoneda M, Gomez-Sanchez CE, Ohno H, Kobuke K, Itcho K, Kohno N. Gonadotropin-Releasing Hormone Stimulate Aldosterone Production in a Subset of Aldosterone-Producing Adenoma. Medicine (Baltimore) 2016; 95:e3659. [PMID: 27196470 PMCID: PMC4902412 DOI: 10.1097/md.0000000000003659] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
We aimed to detect novel genes associated with G protein-coupled receptors (GPCRs) in aldosterone-producing adenoma (APA) and elucidate the mechanisms underlying aldosterone production.Microarray analysis targeting GPCR-associated genes was conducted using APA without known mutations (APA-WT) samples (n = 3) and APA with the KCNJ5 mutation (APA-KCNJ5; n = 3). Since gonadotropin-releasing hormone receptor (GNRHR) was the highest expression in APA-WT by microarray analysis, we investigated the effect of gonadotropin-releasing hormone (GnRH) stimulation on aldosterone production.The quantitative polymerase chain reaction assay results revealed higher GNRHR expression levels in APA-WT samples those in APA-KCNJ5 samples (P < 0.05). LHCGR levels were also significantly elevated in APA-WT samples, and there was a significant and positive correlation between GNRHR and LHCGR expression in all APA samples (r = 0.476, P < 0.05). Patients with APA-WT (n = 9), which showed higher GNRHR and LHCGR levels, had significantly higher GnRH-stimulated aldosterone response than those with APA-KCNJ5 (n = 13) (P < 0.05). Multiple regression analysis revealed that the presence of the KCNJ5 mutation was linked to GNRHR mRNA expression (β = 0.94 and P < 0.01). HAC15 cells with KCNJ5 gene carrying T158A mutation exhibited a significantly lower GNRHR expression than that in control cells (P < 0.05).We clarified increased expression of GNRHR and LHCGR in APA-WT, and the molecular analysis including the receptor expression associated with clinical findings of GnRH stimulation.
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Affiliation(s)
- Rui Kishimoto
- From the Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan (RK, KO, MY, HO, KK, KI, NK); and Division of Endocrinology, G.V. (Sonny) Montgomery VA Medical Center, University of Mississippi Medical Center, Jackson, MS, USA (CEG-S)
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Matsuda Y, Kato T, Takahashi N, Nakajima M, Arimatsu K, Minagawa T, Sato K, Ohno H, Yamazaki K. Ligature-induced periodontitis in mice induces elevated levels of circulating interleukin-6 but shows only weak effects on adipose and liver tissues. J Periodontal Res 2015; 51:639-46. [DOI: 10.1111/jre.12344] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2015] [Indexed: 12/21/2022]
Affiliation(s)
- Y. Matsuda
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - T. Kato
- Laboratory for Intestinal Ecosystem; RCAI RIKEN Center for Integrative Medical Sciences (IMS-RCAI); Yokohama Japan
| | - N. Takahashi
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - M. Nakajima
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - K. Arimatsu
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - T. Minagawa
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - K. Sato
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
- Division of Periodontology; Department of Oral Biological Science; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
| | - H. Ohno
- Laboratory for Intestinal Ecosystem; RCAI RIKEN Center for Integrative Medical Sciences (IMS-RCAI); Yokohama Japan
| | - K. Yamazaki
- Research Unit for Oral-Systemic Connection; Division of Oral Science for Health Promotion; Niigata University Graduate School of Medical and Dental Sciences; Niigata Japan
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Ohno H, Nishimura N, Yamada K, Shimizu Y, Nishimura R, Iwase S, Sugenoya J, Sato M. Water nanodroplets emitted from an air conditioner increased skin moisture levels at the lateral canthus in winter by forming a lipid film with sebum. Skin Res Technol 2015; 22:388-90. [PMID: 26343808 DOI: 10.1111/srt.12262] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2015] [Indexed: 11/28/2022]
Affiliation(s)
- H Ohno
- The Department of Physiology, School of Medicine, Aichi Medical University, Nagakute, Aichi, Japan
| | - N Nishimura
- The Department of Physiology, School of Medicine, Aichi Medical University, Nagakute, Aichi, Japan
| | - K Yamada
- Hitachi Appliances, Inc., Tokyo, Japan
| | - Y Shimizu
- The Department of Physiology, School of Medicine, Aichi Medical University, Nagakute, Aichi, Japan
| | - R Nishimura
- The Department of Physiology, School of Medicine, Aichi Medical University, Nagakute, Aichi, Japan
| | - S Iwase
- The Department of Physiology, School of Medicine, Aichi Medical University, Nagakute, Aichi, Japan
| | - J Sugenoya
- The Department of Physiology, School of Medicine, Aichi Medical University, Nagakute, Aichi, Japan
| | - M Sato
- The Department of Physiology, School of Medicine, Aichi Medical University, Nagakute, Aichi, Japan
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Shiwa M, Yoneda M, Okubo H, Ohno H, Kobuke K, Monzen Y, Kishimoto R, Nakatsu Y, Asano T, Kohno N. Distinct Time Course of the Decrease in Hepatic AMP-Activated Protein Kinase and Akt Phosphorylation in Mice Fed a High Fat Diet. PLoS One 2015; 10:e0135554. [PMID: 26266809 PMCID: PMC4534138 DOI: 10.1371/journal.pone.0135554] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [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: 04/14/2015] [Accepted: 07/23/2015] [Indexed: 12/25/2022] Open
Abstract
AMP-activated protein kinase (AMPK) plays an important role in insulin resistance, which is characterized by the impairment of the insulin-Akt signaling pathway. However, the time course of the decrease in AMPK and Akt phosphorylation in the liver during the development of obesity and insulin resistance caused by feeding a high fat diet (HFD) remains controversial. Moreover, it is unclear whether the impairment of AMPK and Akt signaling pathways is reversible when changing from a HFD to a standard diet (SD). Male ddY mice were fed the SD or HFD for 3 to 28 days, or fed the HFD for 14 days, followed by the SD for 14 days. We examined the time course of the expression and phosphorylation levels of AMPK and Akt in the liver by immunoblotting. After 3 days of feeding on the HFD, mice gained body weight, resulting in an increased oil red O staining, indicative of hepatic lipid accumulation, and significantly decreased AMPK phosphorylation, in comparison with mice fed the SD. After 14 days on the HFD, systemic insulin resistance occurred and Akt phosphorylation significantly decreased. Subsequently, a change from the HFD to SD for 3 days, after 14 days on the HFD, ameliorated the impairment of AMPK and Akt phosphorylation and systemic insulin resistance. Our findings indicate that AMPK phosphorylation decreases early upon feeding a HFD and emphasizes the importance of prompt lifestyle modification for decreasing the risk of developing diabetes.
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Affiliation(s)
- Mami Shiwa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Hirofumi Okubo
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuko Monzen
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Rui Kishimoto
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yusuke Nakatsu
- Department of Biomedical Chemistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tomoichiro Asano
- Department of Biomedical Chemistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Nobuoki Kohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
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Iioka F, Shimomura D, Nakamura F, Ohno H, Yada K, Nogami K, Shima M. Long-term treatment course of a patient with mild haemophilia A who developed a high titre factor VIII inhibitor. Haemophilia 2015; 20:e402-4. [PMID: 25354772 PMCID: PMC4232888 DOI: 10.1111/hae.12491] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2014] [Indexed: 01/10/2023]
Affiliation(s)
- F Iioka
- Department of Hematology, Tenri Hospital, Tenri, Nara, Japan
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Kobuke K, Yoneda M, Nakanishi S, Ohno H, Maeda S, Egusa G. Efficacy and safety of insulin degludec in Japanese patients with type 1 and type 2 diabetes: 24-week results from the observational study in routine clinical practice. J Diabetes Investig 2015; 7:94-9. [PMID: 26816606 PMCID: PMC4718095 DOI: 10.1111/jdi.12373] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/16/2015] [Revised: 04/17/2015] [Accepted: 05/07/2015] [Indexed: 02/03/2023] Open
Abstract
Aims/Introduction Insulin degludec, a new long‐acting insulin analog, showed its better glycemic control and reduced risk of hypoglycemia. This is the first prospective observational study that evaluated the efficacy and safety of insulin degludec in routine clinical practice. Materials and Methods Japanese patients with type 1 or type 2 diabetes mellitus receiving basal–bolus insulin therapy were switched their basal insulin to degludec, and prospectively observed over a 24‐week course. The Diabetes Therapy‐Related Quality of Life questionnaire was administered before and 12 weeks after switching. Results The participants were 80 diabetes patients = (type 1, 44; type 2, 36). In the type 1 group, there was no difference in glycated hemoglobin levels between the pre‐switching and 24‐week measurements (from 62 to 62 mmol/mol, P = 0.768), whereas the daily insulin dose (per kg of bodyweight) decreased significantly (basal, from 0.25 to 0.20 U/kg, P < 0.001; bolus, from 0.40 to 0.37 U/kg, P = 0.001). In the type 2 group, glycated hemoglobin levels decreased after switching (from 60 to 58 mmol/mol, P = 0.028). In the type 1 group, the frequency of hypoglycemia decreased significantly after switching, but not significantly in the type 2 group. Patient satisfaction with the control of hypoglycemia tended to improve in the type 1 group. Conclusions Compared with existing long‐acting insulin, degludec can maintain glycemic control at a lower insulin dose and frequency of hypoglycemia in type 1 diabetes, while it can improve glycemic control at an equal insulin dose in type 2 diabetes. This is first observational prospective study of insulin degludec in routine clinical practice that we evaluated the effect on glycemic control and risk of hypoglycemia in basal‐bolus insulin therapy. We found that insulin degludec can maintain glycemic control at a lower insulin dose and frequency of hypoglycemia in type 1 diabetes, while it can improve glycemic control at equally insulin dose in type 2 diabetes. These results mean that insulin degludec is of use in routine clinical practice.
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Affiliation(s)
- Kazuhiro Kobuke
- Department of Molecular and Internal Medicine Graduate School of Biomedical & Health Sciences Hiroshima University Hiroshima Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine Graduate School of Biomedical & Health Sciences Hiroshima University Hiroshima Japan
| | - Shuhei Nakanishi
- Department of Metabolism and Endocrinology Hiroshima Red Cross Hospital & Atomic Bomb Survivors Hospital Hiroshima Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine Graduate School of Biomedical & Health Sciences Hiroshima University Hiroshima Japan
| | - Shusaku Maeda
- Department of Molecular and Internal Medicine Graduate School of Biomedical & Health Sciences Hiroshima University Hiroshima Japan
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Nagano G, Ohno H, Oki K, Kobuke K, Shiwa T, Yoneda M, Kohno N. Activation of classical brown adipocytes in the adult human perirenal depot is highly correlated with PRDM16-EHMT1 complex expression. PLoS One 2015; 10:e0122584. [PMID: 25812118 PMCID: PMC4374757 DOI: 10.1371/journal.pone.0122584] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [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: 11/13/2014] [Accepted: 02/18/2015] [Indexed: 12/22/2022] Open
Abstract
Brown fat generates heat to protect against cold and obesity. Adrenergic stimulation activates the thermogenic program of brown adipocytes. Although the bioactivity of brown adipose tissue in adult humans had been assumed to very low, several studies using positron emission tomography-computed tomography (PET-CT) have detected bioactive brown adipose tissue in adult humans under cold exposure. In this study, we collected adipose tissues obtained from the perirenal regions of adult patients with pheochromocytoma (PHEO) or non-functioning adrenal tumors (NF). We demonstrated that perirenal brown adipocytes were activated in adult patients with PHEO. These cells had the molecular characteristics of classical brown fat rather than those of beige/brite fat. Expression of brown adipose tissue markers such as uncoupling protein 1 (UCP1) and cell death-inducing DFFA-like effector A (CIDEA) was highly correlated with the amounts of PRD1-BF-1-RIZ1 homologous domain-containing protein-16 (PRDM16) - euchromatic histone-lysine N-methyltransferase 1 (EHMT1) complex, the key transcriptional switch for brown fat development. These results provide novel insights into the reconstruction of human brown adipocytes and their therapeutic application against obesity and its complications such as type 2 diabetes.
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Affiliation(s)
- Gaku Nagano
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Haruya Ohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
- * E-mail:
| | - Kenji Oki
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuhiro Kobuke
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Tsuguka Shiwa
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Masayasu Yoneda
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Nobuoki Kohno
- Department of Molecular and Internal Medicine, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, Japan
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