1
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Hoyano M, Ozaki K, Kubota N, Yoneyama S, Okubo T, Ikegami R, Inomata T. Coronary Aneurysm after Excimer Laser Catheter Ablation and Plain Balloon Angioplasty for Chronic Total Occlusion in a Patient with Kawasaki Disease. Intern Med 2024:3210-23. [PMID: 38403759 DOI: 10.2169/internalmedicine.3210-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Abstract
A 37-year-old man with a history of Kawasaki disease presented with total occlusion of the right coronary artery. The patient underwent percutaneous coronary intervention (PCI) with excimer laser coronary angioplasty (ELCA) and plain balloon angioplasty (POBA). Three months after PCI, a coronary aneurysm with restenosis was detected at the PCI site, and PCI was performed again using a small balloon. The aneurysm healed three months after the second PCI procedure. This is the first report describing the long-term outcome after an aneurysm caused by PCI with ELCA and POBA.
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Affiliation(s)
- Makoto Hoyano
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Naoki Kubota
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Shintaro Yoneyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Takeshi Okubo
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Takayuki Inomata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
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2
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Akiyama T, Ozaki K, Takano T, Yoneyama S, Kubota N, Okubo T, Ikegami R, Hoyano M, Yanagawa T, Inomata T. Efficacy of Proprotein Convertase Subtilisin/Kexin Type 9 Inhibitor Treatment for Repeated In-stent Restenosis in a Coronary Artery. Intern Med 2023; 62:3361-3365. [PMID: 37005262 PMCID: PMC10713376 DOI: 10.2169/internalmedicine.1609-23] [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] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Accepted: 02/12/2023] [Indexed: 04/01/2023] Open
Abstract
A 57-year-old woman experienced chest pain. A coronary angiogram revealed middle left anterior descending artery stenosis. Despite receiving adequate anti-hyperlipidemia treatment and undergoing percutaneous coronary intervention (PCI), she experienced angina and required PCI six more times for in-stent restenosis. As she had high lipoprotein (a) [LP-(a)] levels at the seventh PCI procedure, proprotein convertase subtilisin/kexin type 9 inhibitor (PCSK9i) was administered, and a reduction in the LP-(a) and low-density lipoprotein cholesterol (LDL-C) values was observed. She experienced no recurrence of angina for five years with PCSK9i treatment. PCSK9i can reduce not only LDL-C but also LP-(a) levels, resulting in cardiac event risk reduction.
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Affiliation(s)
- Takumi Akiyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Toshiki Takano
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Shintaro Yoneyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Naoki Kubota
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Takeshi Okubo
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Makoto Hoyano
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Takao Yanagawa
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Takayuki Inomata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
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3
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Affiliation(s)
- Shintaro Yoneyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Naoki Kubota
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kazuyuki Ozaki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takeshi Okubo
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ryutaro Ikegami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Makoto Hoyano
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takayuki Inomata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
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4
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Yoneyama S, Ozaki K, Kubota N, Okubo T, Ikegami R, Hoyano M, Yanagawa T, Inomata T. Angioscopic Finding of Honeycomb-Like Structure in Coronary Artery Disease. Circ J 2023; 87:852. [PMID: 36967132 DOI: 10.1253/circj.cj-23-0042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Affiliation(s)
- Shintaro Yoneyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kazuyuki Ozaki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Naoki Kubota
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takeshi Okubo
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ryutaro Ikegami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Makoto Hoyano
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takao Yanagawa
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takayuki Inomata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
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5
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Kubota N, Ozaki K, Akiyama T, Washiyama Y, Yoneyama S, Okubo T, Ikegami R, Hoyano M, Yanagawa T, Tanabe N, Inomata T. Correlation Between the Japanese Version of the High Bleeding Risk (J-HBR) Criteria and the PRECISE-DAPT Score, and Optimal J-HBR Cut-Off Score to Predict Major Bleeding. Circ Rep 2022; 4:363-370. [PMID: 36032388 PMCID: PMC9360984 DOI: 10.1253/circrep.cr-22-0059] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Accepted: 06/07/2022] [Indexed: 12/03/2022] Open
Abstract
Background: The correlation between the Japanese version of high bleeding risk (J-HBR) criteria and the Predicting Bleeding Complications in Patients Undergoing Stent Implantation and Subsequent Dual Antiplatelet Therapy (PRECISE-DAPT) score is unknown, as is the relationship of both risk scores with ischemic events. Methods and Results: This study enrolled 842 patients who underwent percutaneous coronary intervention (PCI) between January 2016 and December 2020. The 2 bleeding risk scores at the time of PCI and the subsequent risk of bleeding and ischemic events over a 1-year follow-up were examined. The J-HBR score was significantly correlated with the PRECISE-DAPT score (r=0.731, P<0.001). However, 1 year after PCI, the J-HBR was not significantly associated with the incidence of major bleeding and ischemic events (log-rank, P=0.058 and P=0.351, respectively), whereas the PRECISE-DAPT score predicted both the incidence of major bleeding and ischemic events (log-rank, P=0.006 and P=0.019, respectively). According to receiver operating characteristic curve analysis, a J-HBR score ≥1.5 was significantly associated with a higher cumulative incidence of major bleeding, but not ischemic events (log-rank, P=0.004 and P=0.513, respectively). Conclusions: The J-HBR score is highly correlated with the PRECISE-DAPT score. A J-HBR score ≥1.5 can identify high bleeding risk patients without an increased risk of ischemic events.
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Affiliation(s)
- Naoki Kubota
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kazuyuki Ozaki
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takumi Akiyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuzo Washiyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Shintaro Yoneyama
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takeshi Okubo
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ryutaro Ikegami
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Makoto Hoyano
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takao Yanagawa
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Naohito Tanabe
- Department of Health and Nutrition, Faculty of Human Life Studies, University of Niigata Prefecture
| | - Takayuki Inomata
- Department of Cardiovascular Medicine, Niigata University Graduate School of Medical and Dental Sciences
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6
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Hayashi Y, Shimizu I, Yoshida Y, Ikegami R, Suda M, Katsuumi G, Fujiki S, Ozaki K, Abe M, Sakimura K, Okuda S, Hayano T, Nakamura K, Walsh K, Jespersen NZ, Nielsen S, Scheele C, Minamino T. Coagulation factors promote brown adipose tissue dysfunction and abnormal systemic metabolism in obesity. iScience 2022; 25:104547. [PMID: 35754738 PMCID: PMC9218513 DOI: 10.1016/j.isci.2022.104547] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 02/03/2022] [Revised: 04/11/2022] [Accepted: 06/02/2022] [Indexed: 12/31/2022] Open
Abstract
Brown adipose tissue (BAT) has a role in maintaining systemic metabolic health in rodents and humans. Here, we show that metabolic stress induces BAT to produce coagulation factors, which then-together with molecules derived from the circulation-promote BAT dysfunction and systemic glucose intolerance. When mice were fed a high-fat diet (HFD), the levels of tissue factor, coagulation Factor VII (FVII), activated coagulation Factor X (FXa), and protease-activated receptor 1 (PAR1) expression increased significantly in BAT. Genetic or pharmacological suppression of coagulation factor-PAR1 signaling in BAT ameliorated its whitening and improved thermogenic response and systemic glucose intolerance in mice with dietary obesity. Conversely, the activation of coagulation factor-PAR1 signaling in BAT caused mitochondrial dysfunction in brown adipocytes and systemic glucose intolerance in mice fed normal chow. These results indicate that BAT produces endogenous coagulation factors that mediate pleiotropic effects via PAR1 signaling under metabolic stress.
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Affiliation(s)
- Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
- Corresponding author
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
- Department of Advanced Senotherapeutics, Juntendo University Graduate School of Medicine, Tokyo 113-8431, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
| | - Shinya Fujiki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Manabu Abe
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, 1-757 Asahimachi-Dori, Chuo-ku, Niigata 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-Dori, Chuo-ku, Niigata 951-8585, Japan
| | - Kenji Sakimura
- Department of Cellular Neurobiology, Brain Research Institute, Niigata University, 1-757 Asahimachi-Dori, Chuo-ku, Niigata 951-8585, Japan
- Department of Animal Model Development, Brain Research Institute, Niigata University, 1-757 Asahimachi-Dori, Chuo-ku, Niigata 951-8585, Japan
| | - Shujiro Okuda
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Toshiya Hayano
- Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, Shiga 525-8577 Japan
| | - Kazuhiro Nakamura
- Department of Integrative Physiology, Nagoya University Graduate School of Medicine, Nagoya 466-8550, Japan
| | - Kenneth Walsh
- Division of Cardiovascular Medicine, Robert M. Berne Cardiovascular Research Center, University of Virginia School of Medicine, Charlottesville, VA 22908, USA
| | - Naja Zenius Jespersen
- The Centre of Inflammation and Metabolism and Centre for Physical Activity Research Rigshospitalet, Copenhagen, Denmark
| | - Søren Nielsen
- The Centre of Inflammation and Metabolism and Centre for Physical Activity Research Rigshospitalet, Copenhagen, Denmark
| | - Camilla Scheele
- The Centre of Inflammation and Metabolism and Centre for Physical Activity Research Rigshospitalet, Copenhagen, Denmark
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen, Denmark
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8431, Japan
- Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, 1-7-1 Otemachi, Chiyoda-ku, Tokyo 100-0004, Japan
- Corresponding author
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7
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Suda M, Shimizu I, Katsuumi G, Yoshida Y, Hayashi Y, Ikegami R, Matsumoto N, Yoshida Y, Mikawa R, Katayama A, Wada J, Seki M, Suzuki Y, Iwama A, Nakagami H, Nagasawa A, Morishita R, Sugimoto M, Okuda S, Tsuchida M, Ozaki K, Nakanishi-Matsui M, Minamino T. Senolytic vaccination improves normal and pathological age-related phenotypes and increases lifespan in progeroid mice. Nat Aging 2021; 1:1117-1126. [PMID: 37117524 DOI: 10.1038/s43587-021-00151-2] [Citation(s) in RCA: 78] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 11/04/2021] [Indexed: 04/30/2023]
Abstract
Elimination of senescent cells (senolysis) was recently reported to improve normal and pathological changes associated with aging in mice1,2. However, most senolytic agents inhibit antiapoptotic pathways3, raising the possibility of off-target effects in normal tissues. Identification of alternative senolytic approaches is therefore warranted. Here we identify glycoprotein nonmetastatic melanoma protein B (GPNMB) as a molecular target for senolytic therapy. Analysis of transcriptome data from senescent vascular endothelial cells revealed that GPNMB was a molecule with a transmembrane domain that was enriched in senescent cells (seno-antigen). GPNMB expression was upregulated in vascular endothelial cells and/or leukocytes of patients and mice with atherosclerosis. Genetic ablation of Gpnmb-positive cells attenuated senescence in adipose tissue and improved systemic metabolic abnormalities in mice fed a high-fat diet, and reduced atherosclerotic burden in apolipoprotein E knockout mice on a high-fat diet. We then immunized mice against Gpnmb and found a reduction in Gpnmb-positive cells. Senolytic vaccination also improved normal and pathological phenotypes associated with aging, and extended the male lifespan of progeroid mice. Our results suggest that vaccination targeting seno-antigens could be a potential strategy for new senolytic therapies.
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Affiliation(s)
- Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Naomi Matsumoto
- Division of Biochemistry, School of Pharmacy, Iwate Medical University, Iwate, Japan
| | - Yutaka Yoshida
- Department of Structural Pathology, Kidney Research Center, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryuta Mikawa
- Research Institute, National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Akihiro Katayama
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Jun Wada
- Department of Nephrology, Rheumatology, Endocrinology and Metabolism, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masahide Seki
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Yutaka Suzuki
- Department of Computational Biology and Medical Sciences, Graduate School of Frontier Sciences, The University of Tokyo, Chiba, Japan
| | - Atsushi Iwama
- Division of Stem Cell and Molecular Medicine, Center for Stem Cell Biology and Regenerative Medicine, The Institute of Medical Science, The University of Tokyo, Tokyo, Japan
| | - Hironori Nakagami
- Department of Health Development and Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Ayako Nagasawa
- Department of Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryuichi Morishita
- Department of Clinical Gene Therapy, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Masataka Sugimoto
- Research Institute, National Center for Geriatrics and Gerontology, Aichi, Japan
| | - Shujiro Okuda
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masanori Tsuchida
- Department of Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | | | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, Tokyo, Japan.
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
- Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo, Japan.
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8
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Nakao M, Shimizu I, Katsuumi G, Yoshida Y, Suda M, Hayashi Y, Ikegami R, Hsiao YT, Okuda S, Soga T, Minamino T. Empagliflozin maintains capillarization and improves cardiac function in a murine model of left ventricular pressure overload. Sci Rep 2021; 11:18384. [PMID: 34526601 PMCID: PMC8443662 DOI: 10.1038/s41598-021-97787-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [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: 04/16/2021] [Accepted: 08/31/2021] [Indexed: 01/04/2023] Open
Abstract
Patients with type 2 diabetes treated with Sodium glucose transporter 2 (SGLT2) inhibitors show reduced mortality and hospitalization for heart failure (HF). SGLT2 inhibitors are considered to activate multiple cardioprotective pathways; however, underlying mechanisms are not fully described. This study aimed to elucidate the underlying mechanisms of the beneficial effects of SGLT2 inhibitors on the failing heart. We generated a left ventricular (LV) pressure overload model in C57BL/6NCrSlc mice by transverse aortic constriction (TAC) and examined the effects of empagliflozin (EMPA) in this model. We conducted metabolome and transcriptome analyses and histological and physiological examinations. EMPA administration ameliorated pressure overload-induced systolic dysfunction. Metabolomic studies showed that EMPA increased citrulline levels in cardiac tissue and reduced levels of arginine, indicating enhanced metabolism from arginine to citrulline and nitric oxide (NO). Transcriptome suggested possible involvement of the insulin/AKT pathway that could activate NO production through phosphorylation of endothelial NO synthase (eNOS). Histological examination of the mice showed capillary rarefaction and endothelial apoptosis after TAC, both of which were significantly improved by EMPA treatment. This improvement was associated with enhanced expression phospho-eNOS and NO production in cardiac endothelial cells. NOS inhibition attenuated these cardioprotective effects of EMPA. The in vitro studies showed that catecholamine-induced endothelial apoptosis was inhibited by NO, arginine, or AKT activator. EMPA activates the AKT/eNOS/NO pathway, which helps to suppress endothelial apoptosis, maintain capillarization and improve systolic dysfunction during LV pressure overload.
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Affiliation(s)
- Masaaki Nakao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.,Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Yung Ting Hsiao
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan
| | - Shujiro Okuda
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata, 997-0052, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan. .,Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Agency for Medical Research and Development, Tokyo, 100-0004, Japan.
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9
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Albaghdadi MS, Ikegami R, Kassab MB, Gardecki JA, Kunio M, Chowdhury MM, Khamis R, Libby P, Tearney GJ, Jaffer FA. Near-Infrared Autofluorescence in Atherosclerosis Associates With Ceroid and Is Generated by Oxidized Lipid-Induced Oxidative Stress. Arterioscler Thromb Vasc Biol 2021; 41:e385-e398. [PMID: 34011166 DOI: 10.1161/atvbaha.120.315612] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
[Figure: see text].
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Affiliation(s)
- Mazen S Albaghdadi
- Cardiovascular Research Center, Division of Cardiology (M.S.A., R.I., M.B.K., M.M.C., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston.,Division of Cardiology, Department of Medicine, University of Toronto, ON, Canada (M.S.A.)
| | - Ryutaro Ikegami
- Cardiovascular Research Center, Division of Cardiology (M.S.A., R.I., M.B.K., M.M.C., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston.,Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan (R.I.)
| | - Mohamad B Kassab
- Cardiovascular Research Center, Division of Cardiology (M.S.A., R.I., M.B.K., M.M.C., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston
| | - Joseph A Gardecki
- Wellman Center for Photomedicine (J.A.G., G.J.T., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston
| | - Mie Kunio
- Canon USA, Inc, Cambridge, MA (M.K.)
| | - Mohammed M Chowdhury
- Cardiovascular Research Center, Division of Cardiology (M.S.A., R.I., M.B.K., M.M.C., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston.,Division of Vascular Surgery, Department of Surgery, Addenbrooke's Hospital, University of Cambridge, United Kingdom (M.M.C.)
| | - Ramzi Khamis
- National Heart Lung Institute, Imperial College London, United Kingdom (R.K.)
| | - Peter Libby
- Department of Cardiovascular Medicine, Brigham and Women's Hospital, Boston, MA (P.L.)
| | - Guillermo J Tearney
- Wellman Center for Photomedicine (J.A.G., G.J.T., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston.,Department of Pathology (G.J.T.), Harvard Medical School, Massachusetts General Hospital, Boston.,Harvard-MIT Division of Health Sciences and Technology, Cambridge, MA (G.J.T.)
| | - Farouc A Jaffer
- Cardiovascular Research Center, Division of Cardiology (M.S.A., R.I., M.B.K., M.M.C., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston.,Wellman Center for Photomedicine (J.A.G., G.J.T., F.A.J.), Harvard Medical School, Massachusetts General Hospital, Boston
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10
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Hsiao YT, Shimizu I, Wakasugi T, Yoshida Y, Ikegami R, Hayashi Y, Suda M, Katsuumi G, Nakao M, Ozawa T, Izumi D, Kashimura T, Ozaki K, Soga T, Minamino T. Cardiac mitofusin-1 is reduced in non-responding patients with idiopathic dilated cardiomyopathy. Sci Rep 2021; 11:6722. [PMID: 33762690 PMCID: PMC7990924 DOI: 10.1038/s41598-021-86209-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [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: 10/05/2020] [Accepted: 03/08/2021] [Indexed: 01/08/2023] Open
Abstract
Prognosis of severe heart failure remains poor. Urgent new therapies are required. Some heart failure patients do not respond to established multidisciplinary treatment and are classified as “non-responders”. The outcome is especially poor for non-responders, and underlying mechanisms are largely unknown. Mitofusin-1 (Mfn1), a mitochondrial fusion protein, is significantly reduced in non-responding patients. This study aimed to elucidate the role of Mfn1 in the failing heart. Twenty-two idiopathic dilated cardiomyopathy (IDCM) patients who underwent endomyocardial biopsy of intraventricular septum were included. Of the 22 patients, 8 were non-responders (left ventricular (LV) ejection fraction (LVEF) of < 10% improvement at late phase follow-up). Electron microscopy (EM), quantitative PCR, and immunofluorescence studies were performed to explore the biological processes and molecules involved in failure to respond. Studies in cardiac specific Mfn1 knockout mice (c-Mfn1 KO), and in vitro studies with neonatal rat ventricular myocytes (NRVMs) were also conducted. A significant reduction in mitochondrial size in cardiomyocytes, and Mfn1, was observed in non-responders. A LV pressure overload with thoracic aortic constriction (TAC) c-Mfn1 KO mouse model was generated. Systolic function was reduced in c-Mfn1 KO mice, while mitochondria alteration in TAC c-Mfn1 KO mice increased. In vitro studies in NRVMs indicated negative regulation of Mfn1 by the β-AR/cAMP/PKA/miR-140-5p pathway resulting in significant reduction in mitochondrial respiration of NRVMs. The level of miR140-5p was increased in cardiac tissues of non-responders. Mfn1 is a biomarker of heart failure in non-responders. Therapies targeting mitochondrial dynamics and homeostasis are next generation therapy for non-responding heart failure patients.
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Affiliation(s)
- Yung Ting Hsiao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.,Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan. .,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Masaaki Nakao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Takuya Ozawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Daisuke Izumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Takeshi Kashimura
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata, 997-0052, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, 951-8510, Japan. .,Japan Agency for Medical Research and Development-Core Research for Evolutionary Medical Science and Technology (AMED-CREST), Japan Agency for Medical Research and Development, Tokyo, Japan. .,Department of Cardiovascular Biology and Medicine, Juntendo University Graduate School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo, 113-8421, Japan.
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11
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Tsukano Y, Shimizu I, Yoshida Y, Hsiao Y, Ikegami R, Hayashi Y, Suda M, Katsuumi G, Nakao M, Minamino T. Obesity associated pro-fibrotic protein augments fibrosis in heart. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Chronic sterile inflammation in visceral fat has causal roles for systemic metabolic disorders in obesity. Inflamed visceral adipose tissue secretes pro-inflammatory adipokines, and this contributes to tissue remodeling under a metabolically stressed condition. Various kinds of white adipokines are broadly studied, however, roles of brown adipose tissue (BAT) derived adipokines (BATokine) remain to be explored. In this project, we tried to characterize pathogenic role of BATokine in obesity related fibrotic disorders, especially focusing on heart failure with preserved ejection fraction (HFpEF). For this purpose, we analyzed two sets of DNA microarray data, and identified an obesity associated pro-fibrotic protein (OAFP) as a possible pathogenic BATokine. Our biobank studies showed OAFP increased in patients with diastolic dysfunction, and E/e' analyzed with cardiac echo increased in direct proportion to circulating OAFP level in humans. We generated dietary obese mice model, and found OAFP increased both in BAT and circulation. We generated a murine systemic or BAT specific OAFP knockout (KO) models, and found that obesity-induced diastolic dysfunction ameliorated in these models. Cardiac fibrosis was also suppressed by genetic depletion of OAFP. We found OAFP increased in circulation in aged humans and mice, and studies in chronologically aged mice showed this molecule increased in BAT with aging. Our results indicate that OAFP is secreted predominantly from BAT, and mediates pathogenic roles by augmenting cardiac fibrosis in dietary obesity or aging. Suppression of OAFP may become a therapy for HFpEF.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Tsukano
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - I Shimizu
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - Y Yoshida
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - Y Hsiao
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
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12
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Suda M, Shimizu I, Katsuumi G, Yoshida Y, Hayashi Y, Nakao M, Ikegami R, Furuuchi R, Ozawa T, Ozaki K, Minamino T. Elimination of senescent cells targeting Senescence associated glycoprotein (SAGP) improved the ageing-associated diseases and extended the lifespan. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Cellular senescence entails an irreversible growth arrest and a pro-inflammatory secretory phenotype, which contributes to aging-associated disorders such as atherosclerosis and diabetes, however, underlying mechanisms are largely unknown. In this study, we identified a novel protein, senescence-associated glycoprotein (SAGP), as a biomarker of cellular senescence and we also found that elimination of senescent cells targeting SAGP attenuated aging-associated disorders such as atherosclerosis, diabetes and frailty.
First, we identified that SAGP as a senescent marker by microarray analysis of senescent human endothelial cells compared with young endothelial cells. The expression of SAGP was significantly increased in the aorta of chronological aging mice and ApoE-knockout mice. Then we measured SAGP expression in the patients registered in our hospital and found that mean SAGP expression was significantly higher in patients with atherosclerotic diseases compared to patients without atherosclerotic diseases. These data suggest that SAGP would become the novel marker of cellular senescence and/or aging-associated disorders.
We found SAGP co-localized with lysosome and bound to V-ATPase, proton pump in the acid organelles such as lysosome. The electron microscopy analysis revealed that the dysfunctional lysosomes were accumulated in SAGP knockdown endothelial cell. The genetic deletion of SAGP resulted in the increase of lysosomal pH and the suppression of mitochondrial autophagy, mitophagy. And this associated with the high level of mitochondrial reactive oxygen species (ROS) and promoted premature senescence in human endothelial cells. These data suggest that SAGP was induced by the lysosomal stress in the senescent cells to protects senescent cells by maintaining the lysosomal homeostasis.
Recently, it is reported that elimination of senescent cells (senolysis) reversibly improved pathological aging phenotypes and also extended the lifespan. We established senolytic therapy targeting SAGP. We generated SAGP-DTR (diphtheria toxin receptor) transgenic mice, in which we could eliminate the SAGP- positive senescent cells using DT (diphtheria toxin). We found elimination of SAGP positive senescent cells significantly reduced the atherosclerotic plaque burden in the aorta of ApoE-KO mice and improved the glucose metabolism of dietary obese mice, indicating that SAGP could be a useful target for senolytic therapy. For clinical implication, we then developed a cytotoxic vaccine targeting SAGP. Treatment with SAGP vaccine successfully eliminated SAGP positive senescent cells and attenuated atherosclerosis and metabolic dysfunction. Surprisingly, administration of SAGP vaccine to Zmpste24-KO mice, premature aging mice, extended the lifespan. These data indicate that targeting SAGP-positive cells could be a novel strategy for senolytic therapy.
Effect of SAGP vaccine
Funding Acknowledgement
Type of funding source: Public grant(s) – National budget only. Main funding source(s): Grant-in-Aid for Scientific Research by Japan Society for the Promotion of Science (JSPS)
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Affiliation(s)
- M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - I Shimizu
- Niigata University, Division of molecular aging and cell biology, Niigata, Japan
| | - G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Y Yoshida
- Niigata University, Division of molecular aging and cell biology, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Furuuchi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Ozawa
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - K Ozaki
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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13
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Hsiao Y, Shimizu I, Yoshida Y, Ikegami R, Hayashi Y, Suda M, Katsuumi G, Wakasugi T, Nakao M, Minamino T. Circulating pro fibrotic protein promotes fibrosis in liver. Eur Heart J 2020. [DOI: 10.1093/ehjci/ehaa946.3740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
Background/Introduction
Non-alcoholic steatohepatitis (NASH), driven by the obesity epidemic, has become the most common form of liver disease. Inflamed visceral adipose tissue secretes pro-inflammatory adipokines that are causal for systemic metabolic disorders. Role of adipokines in NASH, especially those from brown adipose tissues (BATokine) remain unclear.
Purpose
To show the pathogenic role of BATokine in NASH.
Methods
To identify and characterize the pathological roles of pro-fibrotic BATokine, we generated a murine obese NASH model by imposing a high fat diet in C57BL6/NCr mice, and murine systemic or BAT specific knockout (KO) models. We also conducted functional in-vitro studies with differentiated brown adipocytes.
Results
Analyzing two sets of DNA micro array data with bioinformatics, we identified a secreted form pro-fibrotic protein (sPFP) expressed in dysfunctional brown adipose tissues (BAT) in mice. Testing our biobank samples, we found this protein increased in plasma of NASH patients. We generated a murine obese NASH model by imposing a high fat diet in C57BL6/NCr mice for 9–10 months since 4 weeks of age, and found that sPFP is produced predominantly by BAT. In this model, we also found that sPFP increased in plasma. We generated a murine systemic or BAT specific sPFP knockout (KO) models and found that liver fibrosis ameliorated in these models. We also suppressed circulating sPFP with a peptide vaccine targeting this molecule, and found that sPFP vaccination therapy inhibited liver fibrosis. Next, we generated sPFP gain of function (GOF) model by the administration of plasmid encoding sPFP into skeletal muscle. Liver fibrosis augmented in sPFP-GOF model, and these results suggested that sPFP has causal role for the progression of fibrotic response in liver. In vitro studies with differentiated brown adipocytes showed that metabolic stress increased c-Fos in nuclear, and this was causal for an increase in sPFP level.
Conclusions
Our results suggest that one of the BATokines, sPFP, contributes for the progression of fibrotic responses in obese-NASH model. Inhibition of sPFP may become a therapy for NASH or obesity related fibrotic disorders.
Funding Acknowledgement
Type of funding source: None
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Affiliation(s)
- Y Hsiao
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - I Shimizu
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - Y Yoshida
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - T Wakasugi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
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14
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Suda M, Shimizu I, Yoshida Y, Katsuumi G, Hayashi Y, Ikegami R, Furuuchi R, Nakao M, Ozawa T, Minamino T. 5892Elimination of cells expressing Senescence associated glycoprotein (SAGP) attenuates the atherosclerotic diseases. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Cellular senescence is defined as a state of irreversible growth arrest and is accompanied by changes of both cell morphology and gene expression. Although accumulation of senescent vascular endothelial cells impair the vessel homeostasis and promote atherosclerotic diseases, underlying mechanisms are largely unknown. In this study, we identified a novel protein, senescence-associated glycoprotein (SAGP), as a biomarker of cellular senescence and we found modulation of SAGP or elimination of senescent cells targeting SAGP would become a novel therapy for atherosclerotic diseases.
We found that SAGP expression was significantly increased in human endothelial cells undergoing replicative senescence compared with young endothelial cells. We also found SAGP expression in aorta was significantly increased both in chronological aging mice or ApoE knockout mice. Furthermore, we measured SAGP expression in patients registered in our hospital and found that mean SAGP expression was significantly higher in patients with atherosclerotic diseases compared to patients without atherosclerotic diseases.These data suggest that SAGP would become a novel cellular senescence and/or atherosclerotic disease marker.
Genetic deletion of SAGP resulted in high level of mitochondrial reactive oxygen species (ROS) and promoted premature senescence in human endothelial cells. And this associated with suppression of mitochondrial autophagy, mitophagy. We found SAGP co-localized with lysosome by immunocytochemistry. In addition, the electron microscopy analysis revealed that the dysfunctional lysosomes were accumulated in SAGP knockdown endothelial cell, suggesting that SAGP maintain lysosomal homeostasis.
Next, wegenerated ApoE-KO/ SAGP overexpression mice and found that atherosclerotic plaque burden was attenuated in these double-transgenic mice. In contrast, SAGP/ApoE double knockout mice showed progression in atherosclerosis. These data suggest that modulation of SAGPwould become a new therapeutic target for atherosclerotic diseases.
SAGP vaccine
Recently, it is reported that elimination of senescent cells (senolysis) reversibly improved pathological aging phenotypes and also extended the lifespan. We have taken another approach for atherosclerotic diseases, senolytic therapy targeting SAGP. We generated SAGP-DTR (diphtheria toxin receptor) transgenic mice, in which we could eliminate the SAGP- positive senescent cells using DT (diphtheria toxin). We found elimination of SAGP positive senescent cells significantly reduced the atherosclerotic plaque burden, indicating that SAGP would become a useful target for senolytic therapy. We then developed a cytotoxic vaccine targeting SAGP. Treatment with SAGP vaccine successfully eliminated SAGP positive senescent cells. Administration of SAGP vaccine to ApoE-KO mice significantly reduced atherogenesis. These data indicate that targeting SAGP-positive cells could become a strategy for senolytic therapy.
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Affiliation(s)
- M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - I Shimizu
- Niigata University, Division of molecular aging and cell biology, Niigata, Japan
| | - Y Yoshida
- Niigata University, Division of molecular aging and cell biology, Niigata, Japan
| | - G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Furuuchi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Ozawa
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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15
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Nakao M, Shimizu I, Yoshida Y, Katsuumi G, Hayashi Y, Ikegami R, Suda M, Wakasugi T, Minamino T. P3496Empagliflozin improves cardiac function through the increased production of acetylcarnitine in a murine non-diabetic heart failure model. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz745.0363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Empagliflozin is a renal sodium glucose transporter 2 (SGLT2) inhibitor, thereby mediates its anti-diabetic effect via excretion of glucose into urine. EMPA-REG OUTCOME study, the first big randomized control trial of empagliflozin have shown significant reduction of mortality and hospitalization due to heart failure in diabetic patients. This trial hasn't only had a huge impact to cardiovascular field, but also raised a number of questions about underlying mechanisms. It is also uncertain about the efficacy of empagliflozin in non-diabetic heart failure. In this study, we aimed to elucidate the biological effects and its underling mechanism of empagliflozin in a murine non-diabetic heart failure model.
Methods
We generated a heart failure murine model due to left ventricular (LV) pressure overload by performing transverse aortic constriction (TAC) operation to C57BL/6NCr mice. Two weeks after TAC operation we started empagliflozin administration mixed with diet at the ratio of 0.03% w/w. LV function was measured with echocardiography after administration of empagliflozin for two weeks (four weeks after TAC operation) and compared to a littermate control (no treatment) group. Then, heart samples were collected and subjected to further studies including metabolomic analysis. In-vitro studies including Seahorse Extracellular Flux Analyzer were also conducted with differentiated C2C12 cells and neonatal rat ventricular myocytes (NRVM).
Results
We found that empagliflozin treatment (Empa) significantly ameliorated LV systolic dysfunction induced by TAC compared to control group (Con) (figure.A) while heart weight/body weight ratio wasn't reduced. To explore key metabolites that can contribute to improvement of LV function, we conducted metabolomic analysis and found that empagliflozin significantly increased plasma acetylcarnitine level both in sham and TAC groups (figure.B). Previous studies have shown that acetylcarnitine acts as a substrate of acetyl CoA to fuel tricarboxylic acid cycle, and we tested the efficacy of acetylcarnitine for mitochondrial respiration capacity in differentiated C2C12 cells with Seahorse Extracellular Flux Analyzer. This analysis revealed that administration of acetylcarnitine resulted in a significant increase of oxygen consumption reflected by enhancing mitochondrial respiration. Similary, acetylcarnitine also markedly ameliorated impairment of mitochondrial respiration induced by isoproterenol in NRVM.
Conclusion
Our results indicated that empagliflozin has cardioprotective effect in murine heart failure model by enhancing mitochondrial respiration through the increased production of acetylcarnitine. We provide new evidence that empagliflozin would become a promising therapeutic agent to heart failure without diabetes.
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Affiliation(s)
- M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - I Shimizu
- Niigata University Graduate School of Medical and Dental Sciences, Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dent, Niigata, Japan
| | - Y Yoshida
- Niigata University Graduate School of Medical and Dental Sciences, Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dent, Niigata, Japan
| | - G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - T Wakasugi
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Department of Cardiovascular Biology and Medicine, Niigata, Japan
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16
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Katsuumi G, Katsuumi I, Suda M, Yoshida Y, Hayashi Y, Ikegami R, Wakasugi T, Nakao M, Nagasawa A, Sugimoto M, Mikawa R, Minamino T. 5219A novel senolytic drug, seno-7284 ameliorates age-related cardiometabolic diseases. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz746.0068] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Senescence at cellular level develops with various genotoxic stresses and it plays a pivotal role in aging and age-related disorders. Recently, it was shown that elimination of senescent cells, so called “senolysis” has potential to become a next generation therapy for age-related disorders including cardiovascular diseases, pulmonary emphysema, Alzheimer's diseases, etc. However, currently there is no senolytic agent available in clinical settings.
Purpose
Present study was aimed to identify a novel senolytic agent effective for cardiometabolic diseases in compounds already available in clinical settings. Here we demonstrate a compound called “seno-7284” exhibits senolytic effect in murine models of type 2 diabetes, atherosclerosis and progeroid.
Methods
We generated 1) diet-induced obase and diabetic model by imposing a high fat diet for two months, 2) atherosclerosis mice model by imposing western diet to ApoE homozygous knockout mice (ApoE-KO mice) for three months, and 3) Zmpste24 homozygous knockout mice (Zmpste24-KO mice) as a progeroid mice model. We administrated seno-7284 by mixing it into the diet (0.03% w/w). In one, two or four weeks after the administration of seno-7284 to each mice model, we collected tissue samples for further analyses.
Results
Seno-7284 reduced the accumulation of senescent cells in visceral adipose tissue of dietary obese mice as senescence-associated beta-galactosidase (SA-beta-gal) staining exhibits (Figure a). This effect was associated with the suppression in systemic glucose intolerance (Figure b), and adipose tissue inflammation in four weeks after the administration of seno-7284. Administrating seno-7284 for two weeks also reduced accumulation of senescent cells in atherosclerotic lesion in aorta of ApoE-KO mice (Figure c), and inhibited the progression of atherosclerosis (Figure d). Surprisingly, this drug significantly improved the lifespan of Zmpste24-KO mice by administering it from 12 weeks old. Further analysis including RNA-seq or metabolomic analysis suggested that seno-7284 stimulates endogenous senolytic function of NK cells and CD8+ T cells.
Conclusion
Our results indicate that seno-7284 mediates its biological effects by inducing senolysis in some murine aging models. Seno-7284 would become a promising therapeutic agent for age-related cardiometabolic diseases.
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Affiliation(s)
- G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Cardiovascular Biology and Medicine, Niigata, Japan
| | - I Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Molecular Aging and Cell Biology, Niigata, Japan
| | - M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Cardiovascular Biology and Medicine, Niigata, Japan
| | - Y Yoshida
- Niigata University Graduate School of Medical and Dental Sciences, Molecular Aging and Cell Biology, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Cardiovascular Biology and Medicine, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Cardiovascular Biology and Medicine, Niigata, Japan
| | - T Wakasugi
- Niigata University Graduate School of Medical and Dental Sciences, Cardiovascular Biology and Medicine, Niigata, Japan
| | - M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Cardiovascular Biology and Medicine, Niigata, Japan
| | - A Nagasawa
- Niigata University Graduate School of Medical and Dental Sciences, Division of Thoracic and Cardiovascular Surgery, Niigata, Japan
| | - M Sugimoto
- National Center for Geriatrics and Gerontology, Mechanism of Aging, Aichi, Japan
| | - R Mikawa
- National Center for Geriatrics and Gerontology, Mechanism of Aging, Aichi, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Cardiovascular Biology and Medicine, Niigata, Japan
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17
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Tsukano Y, Shimizu I, Yoshida Y, Ikegami R, Hayashi Y, Suda M, Katsuumi G, Wakasugi T, Nakao M, Minamino T. P2591Circulating pro fibrotic protein promotes fibrosis in liver and heart. Eur Heart J 2019. [DOI: 10.1093/eurheartj/ehz748.0917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
Analyzing two sets of DNA micro array data with bioinformatics, we identified a secreted form pro-fibrotic protein (sPFP) expressed in dysfunctional brown adipose tissue (BAT) in mice. Testing our biobank samples, we found this protein increased in plasma of non-alcoholic steatohepatitis (NASH) patients or aged individuals. We generated a murine obese NASH model by imposing a high fat diet in C57BL/6NCr mice for 9–10 months since 4 weeks of age, and found that sPFP is produced predominantly by BAT. In this model, we also found that sPFP increased in plasma. We generated a murine systemic sPFP knockout (KO) model and found that liver fibrosis ameliorated in sPFP-KO model. We also suppressed circulating sPFP with a peptide vaccine targeting this molecule, and found that sPFP vaccination therapy inhibited liver fibrosis. Next, we generated sPFP gain of function (GOF) model by the administration of plasmid encoding sPFP into skeletal muscle. Liver fibrosis augmented in sPFP-GOF model, and these results suggested that sPFP has causal role for the progression of fibrotic response in liver. In the obese NASH model, we found that cardiac fibrosis also developed and it ameliorated in sPFP-KO model, indicating that sPFP may have pathological roles for heart failure with preserved ejection fraction (HFpEF) related with age-related disorders. In addition to an increase in circulating sPFP in aged individuals, we found that sPFP increased in BAT of chronological aged mice model. In vitro studies with differentiated brown adipocytes showed that c-Fos upregulated sPFP in transcript level. Our results suggest that sPFP contributes for the progression of fibrotic responses in obese or aged models. Inhibition of sPFP may become a therapy for NASH or HFpEF.
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Affiliation(s)
- Y Tsukano
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - I Shimizu
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - Y Yoshida
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - T Wakasugi
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Cardiology, Niigata, Japan
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18
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Shimizu I, Yoshida Y, Ikegami R, Minamino T. Abstract 863: Pathological Roles of Senometabolites in Cardiovascular Disorders. Circ Res 2019. [DOI: 10.1161/res.125.suppl_1.863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Mechanisms contributing for the synchronization of aging are yet to be defined. Here, we define “senometabolite” as circulating metabolites having causal roles for the synchronization and progression of aging. Analyzing metabolomic studies in coronary plaque corrected with directional coronary atherectomy (DCA), we found that hydroxyl-metabolite significantly increased in patients with unstable angina compared with stable angina. We generated murine diet induced obese model and found this metabolite increased in aorta and plasma. Administration of this metabolite into human umbilical vein endothelial cells (HUVECs) induced cellular senescence, and immunofluorescence study showed that putative transhydrogenase increased in patients with atherosclerotic disorders. We did metabolomics studies in aged individuals or patients with heart failure and identified another metabolite, oxidized choline, increased under these conditions compared to respective controls. We generated murine left ventricular (LV) pressure overload model and found that oxidized choline increased both in plasma and failing heart. Administration of oxidized choline deteriorated cardiac function, in contrast, genetic model showed suppression of this metabolite ameliorated systolic dysfunction in LV pressure overload model. Proteomic study showed that oxidized choline reduced the expression of cytochrome c oxidase subunit1, and metabolomics study showed that both ATP and phosphocreatine level significantly reduced in cardiac tissues of wild type mice administrated with this metabolite. Administration of oxidized choline also reduced muscle strength, induced fibrosis in skeletal muscle, and electron microscopy showed an increase in dysfunctional mitochondria both in the heart and skeletal muscle. In aged wild type mice, metabolomic study showed oxidized choline increased in plasma. Aging process is still mysterious and continues to be an interesting topic to be explored. Our findings indicate that circulating senometabolites contribute for the progression of pathologies in age related disorders.
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Suda M, Shimizu I, Yoshida Y, Katsuumi G, Hayashi Y, Ikegami R, Nagasawa A, Nakao M, Fruuchi R, Ozawa T, Minamino T. Abstract 804: Elimination of Cells Expressing Senescence Associated Glycoprotein Attenuates Theatherosclerotic Diseases. Circ Res 2019. [DOI: 10.1161/res.125.suppl_1.804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Although accumulation of senescent vascular endothelial cells impairs the vessel homeostasis and promote atherosclerotic diseases, underlying mechanisms are largely unknown. We found that Senescence associated glycoprotein (SAGP) expression was significantly increased in human endothelial cells undergoing replicative senescence. SAGP expression in aorta was significantly increased in Apo-E knockout mice. Furthermore, mean SAGP expression was significantly higher in the leukocytes of the patients with atherosclerotic diseases.These data suggest that SAGP would become the novel cellular senescence and/or atherosclerotic disease marker. The genetic deletion of SAGP resulted in high level of mitochondrial reactive oxygen species (ROS) and promoted premature senescence in human endothelial cells. And this associated with suppression of mitochondrial autophagy, mitophagy, suggesting that SAGP protect cells from ROS by inducing mitophagy. Thus, wegenerated ApoE-KO / SAGP gain-of-function transgenic mice and found that atherosclerotic plaque burden was attenuated in these transgenic mice. In contrast, in SAGP / ApoE double knockout mice atherosclerosis were impaired. These data suggest that modulation of SAGPwould become a new therapeutic target for atherosclerotic diseases.Recently, it is reported that elimination of senescent cells (senolysis) reversibly improved pathological aging phenotypes. We generated SAGP-DTR (diphtheria toxin receptor) transgenic mice,inducible elimination of SAGP positive senescent cells upon administration of diphtheria toxin. Elimination of SAGP expressing cells significantly reduced the atherosclerotic plaque burden. Furthermore, we developed a cytotoxic vaccine targeting SAGP. Administration of SAGP vaccine to ApoE-KO mice significantly reduced atherogenesis. These data indicate that targeting SAGP-positive cells could be a strategy for senolytic therapy.
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20
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Hayashi Y, Shimizu I, Yoshida Y, Ikegami R, Katsuumi G, Suda M, Fujiki S, Minamino T. Abstract 852: The Pathological Role of Coagulation Factors in Promoting Brown Adipose Tissue Dysfunction and Systemic Metabolic Disorder in Obesity. Circ Res 2019. [DOI: 10.1161/res.125.suppl_1.852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Obese individuals are predisposed to cardio-metabolic disorders. Brown adipose tissue (BAT) is an active metabolic organ abundant with mitochondria, and studies suggest a potential role of BAT in the maintenance of metabolic health in rodents and humans. Metabolic stress causes BAT dysfunction, but the underlying mechanisms are largely unknown. Coagulation factor Xa (FXa) is critically involved in a coagulation cascade, and it is also known to mediate biological effects by the activation of protease-activated receptor (PAR)-signaling. Accumulating evidence shows that PAR1 contributes to tissue remodeling in cardiovascular system. Here we show a previously unknown role of FXa-PAR signaling in promoting BAT dysfunction and systemic metabolic disorder in a murine dietary obese model.
Imposing a high fat diet (HFD) on C57BL/6NCr mice led to a marked increase in tissue factor (TF), coagulation factor VII and FXa in BAT. TF-FVIIa (activated form of FVII)-FXa complex is known to activate PAR1, and we found a significant increase in PAR1 expression in BAT upon metabolic stress. Administration of a FXa inhibitor ameliorated BAT whitening, improved thermogenic response and systemic glucose intolerance upon dietary obesity. In contrast, administration of warfarin did not show any phenotype in BAT. BAT specific TF and PAR1 over-expression model showed significant whitening of this tissue, which was associated with systemic glucose intolerance. BAT specific PAR1 KO mice improved glucose intolerance and thermogenic response under a metabolically stressed condition. In differentiated brown adipocytes, FXa markedly increased mitochondrial reactive oxygen species (ROS) and reduced mitochondrial membrane potential. Inhibition of PAR1 ameliorated FXa-induced mitochondrial ROS production and reduction in membrane potential. We also found that plasma FXa level did not increase in obese mice as well as in obese individuals. These results suggest the previously unknown role of coagulation systems in promoting BAT dysfunction, leading to systemic metabolic disorders. Maintenance of BAT homeostasis through the suppression of FXa-PAR1 signaling would become a new therapeutic target for obesity and diabetes
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Affiliation(s)
- Yuka Hayashi
- Dept of CardioVascular Biology and Medicine Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Ippei Shimizu
- Dept of Cardiovascular Biology and Medicine Div of Molecular Aging and Cell Biology Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Yohko Yoshida
- Dept of Cardiovascular Biology and Medicine Div of Molecular Aging and Cell Biology Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Dept of CardioVascular Biology and Medicine Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Goro Katsuumi
- Dept of CardioVascular Biology and Medicine Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Masayoshi Suda
- Dept of CardioVascular Biology and Medicine Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Shinya Fujiki
- Dept of CardioVascular Biology and Medicine Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Dept of CardioVascular Biology and Medicine Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
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21
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Katsuumi G, Shimizu I, Yoshida Y, Suda M, Hayashi Y, Ikegami R, Wakasugi T, Nakao M, Furuuchi R, Nagasawa A, Mikawa R, Sugimoto M, Minamino T. Abstract 752: A Novel Senolytic Drug, Seno-7284 Ameliorates Aging and Age-related Cardiometabolic Disorders. Circ Res 2019. [DOI: 10.1161/res.125.suppl_1.752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Accumulation of senescent cells is promoted in various organs as aging, and it also contributes to the progression of age-related disorders. Recent reports have demonstrated the elimination of senescent cells, so-called "senolysis" ameliorated various age-related disorders including cardiovascular diseases. However, there is currently no senolytic drug available in clinical settings. Here, we found a novel senolytic drug (termed “seno-7284”) from those already used in clinical setting and it exhibited senolytic effect in murine models of type 2 diabetes, atherosclerosis and progeroid aging. Conducting senescence-associated beta-galactosidase staining(SA-beta gal), we found that administrating seno-7284 for one week significantly reduced the accumulation of senescent cells in viscerala dipose tissue of diabetic mice induced by fed high-fat diet(Figure). This drug also ameliorated systemic glucose metabolism and adipose tissue inflammation without a reduction of body weight. Further analysis including RNA-seq analysis suggested seno-7284 stimulates the endogenous senolytic function of NK cells and CD8+ T cells via the Cxcl9-Cxcr3 axis. We also found administrating seno-7284 for two weeks also reduced the accumulation of senescent cells and atherosclerotic lesions in the aorta of western-diet-fed ApoE knock out mice. Surprisingly, this drug significantly improved the lifespan of Zmpste24 KO progeroid aging mice. Correctively, our results indicate that seno-7284 mediates its senolytic effect through the recruitment of lymphocytes. Senolytics would become a promising therapy for aging and age-related cardiometabolic disorders.
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Affiliation(s)
- Goro Katsuumi
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Ippei Shimizu
- Div of Molecular Aging and Cell Biology, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Yohko Yoshida
- Div of Molecular Aging and Cell Biology, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Masayoshi Suda
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Yuka Hayashi
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Ryutaro Ikegami
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Takayuki Wakasugi
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Masaaki Nakao
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Ryo Furuuchi
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Ayako Nagasawa
- Div of Thoracic and Cardiovascular Surgery, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
| | - Ryota Mikawa
- Dept of Mechanism of Aging, National Cntr for Geriatrics and Gerontology, Ohbu, Japan
| | - Masataka Sugimoto
- Dept of Mechanism of Aging, National Cntr for Geriatrics and Gerontology, Ohbu, Japan
| | - Tohru Minamino
- Dept of Cardiovascular Biology and Medicine, Niigata Univ Graduate Sch of Med and Dental Sciences, Niitaga, Japan
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22
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Tsukano Y, Shimizu I, Yoshida Y, Ikegami R, Hayashi Y, Suda M, Katsuumi G, Wakasugi T, Nakao M, Minamino T. Abstract 529: Circulating Pro Fibrotic Protein Promotes Fibrosis in Liver and Heart. Circ Res 2019. [DOI: 10.1161/res.125.suppl_1.529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Analyzing two sets of DNA micro array data with bioinformatics, we identified a secreted form pro-fibrotic protein (sPFP) expressed in dysfunctional brown adipose tissue (BAT) in mice. Testing our biobank samples, we found this protein increased in plasma of non-alcoholic steatohepatitis (NASH) patients or aged individuals. We generated a murine obese NASH model by imposing a high fat diet in C57BL/6NCr mice for 9-10 months since 4 weeks of age, and found that sPFP is produced predominantly by BAT. In this model, we also found that sPFP increased in plasma. We generated a murine systemic sPFP knockout (KO) model and found that liver fibrosis ameliorated in sPFP-KO model. We also suppressed circulating sPFP with a peptide vaccine targeting this molecule, and found that sPFP vaccination therapy inhibited liver fibrosis. Next, we generated sPFP gain of function (GOF) model by the administration of plasmid encoding sPFP into skeletal muscle. Liver fibrosis augmented in sPFP-GOF model, and these results suggested that sPFP has causal role for the progression of fibrotic response in liver. In the obese NASH model, we found that cardiac fibrosis also developed and it ameliorated in sPFP-KO model, indicating that sPFP may have pathological roles for heart failure with preserved ejection fraction (HFpEF) related with age-related disorders. In addition to an increase in circulating sPFP in aged individuals, we found that sPFP increased in BAT of chronological aged mice model. In vitro studies with differentiated brown adipocytes showed that c-Fos upregulated sPFP in transcript level. Our results suggest that sPFP contributes for the progression of fibrotic responses in obese or aged models. Inhibition of sPFP may become a therapy for NASH or HFpEF.
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Affiliation(s)
- Yuki Tsukano
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Ippei Shimizu
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Yohko Yoshida
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Yuka Hayashi
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Masayoshi Suda
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Goro Katsuumi
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Takayuki Wakasugi
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Masaaki Nakao
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Niigata Univ Graduate Sch of Med and Dental Sciences, Niigata, Japan
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23
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Yoshida Y, Shimizu I, Hayashi Y, Ikegami R, Suda M, Katsuumi G, Wakasugi T, Nakao M, Nakagami H, Morishita R, Minamino T. Peptide vaccine for semaphorin3E ameliorates systemic glucose intolerance in mice with dietary obesity. Sci Rep 2019; 9:3858. [PMID: 30846754 PMCID: PMC6405888 DOI: 10.1038/s41598-019-40325-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [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: 10/05/2018] [Accepted: 01/29/2019] [Indexed: 01/08/2023] Open
Abstract
We previously demonstrated that cellular aging signals upregulated a secreted class 3 semaphorin E (Sema3E) and its receptor plexinD1 in the adipose tissue of a murine model of dietary obesity and that Sema3E was a chemoattractant, mediating its biological effects by inducing infiltration of plexinD1-positive inflammatory macrophages into the visceral white adipose tissue. This study was performed to develop a peptide vaccine for Sema3E and test its therapeutic potential in a murine model of dietary obesity. Two antigenic peptides were selected to generate neutralizing antibodies for a vaccine. These peptides were conjugated to keyhole limpet hemocyanin (KLH), and were administered with Freund’s adjuvant to obese wild-type male mice. The Sema3E antibody titer was analyzed by ELISA, and the biological effects of the peptides were tested in mice with dietary obesity. Among the two candidate peptides, the Sema3E antibody titer was significantly increased by injection of KLH-conjugated HKEGPEYHWS (Sema3E vaccine). Administration of Sema3E vaccine suppressed the infiltration of plexinD1-positive cells, ameliorated chronic inflammation in visceral white adipose tissue, and improved systemic glucose intolerance in mice with dietary obesity, suggesting that Sema3E vaccine has the potential to become a next generation therapy for obesity and diabetes.
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Affiliation(s)
- Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaaki Nakao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Hironori Nakagami
- Department of Health Development and Medicine, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Ryuichi Morishita
- Department of Clinical Gene Therapy, Osaka University Graduate School of Medicine, Osaka, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.
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24
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Wakasugi T, Shimizu I, Yoshida Y, Hayashi Y, Ikegami R, Suda M, Katsuumi G, Nakao M, Hoyano M, Kashimura T, Nakamura K, Ito H, Nojiri T, Soga T, Minamino T. Role of smooth muscle cell p53 in pulmonary arterial hypertension. PLoS One 2019; 14:e0212889. [PMID: 30807606 PMCID: PMC6391010 DOI: 10.1371/journal.pone.0212889] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [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: 11/16/2018] [Accepted: 02/11/2019] [Indexed: 12/11/2022] Open
Abstract
Pulmonary arterial hypertension (PAH) is characterized by remodeling and narrowing of the pulmonary arteries, which lead to elevation of right ventricular pressure, heart failure, and death. Proliferation of pulmonary artery smooth muscle cells (PASMCs) is thought to be central to the pathogenesis of PAH, although the underlying mechanisms are still being explored. The protein p53 is involved in cell cycle coordination, DNA repair, apoptosis, and cellular senescence, but its role in pulmonary hypertension (PH) is not fully known. We developed a mouse model of hypoxia-induced pulmonary hypertension (PH) and found significant reduction of p53 expression in the lungs. Our in vitro experiments with metabolomic analyses and the Seahorse XF extracellular flux analyzer indicated that suppression of p53 expression in PASMCs led to upregulation of glycolysis and downregulation of mitochondrial respiration, suggesting a proliferative phenotype resembling that of cancer cells. It was previously shown that systemic genetic depletion of p53 in a murine PH model led to more severe lung manifestations. Lack of information about the role of cell-specific p53 signaling promoted us to investigate it in our mouse PH model with the inducible Cre-loxP system. We generated a mouse model with SMC-specific gain or loss of p53 function by crossing Myh11-Cre/ERT2 mice with floxed Mdm4 mice or floxed Trp53 mice. After these animals were exposed to hypoxia for 4 weeks, we conducted hemodynamic and echocardiographic studies. Surprisingly, the severity of PH was similar in both groups of mice and there were no differences between the genotypes. Our findings in these mice indicate that activation or suppression of p53 signaling in SMCs has a minor role in the pathogenesis of PH and suggest that p53 signaling in other cells (endothelial cells, immune cells, or fibroblasts) may be involved in the progression of this condition.
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Affiliation(s)
- Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaaki Nakao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Makoto Hoyano
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takeshi Kashimura
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Kazufumi Nakamura
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Takashi Nojiri
- Department of Biochemistry, National Cerebral and Cardiovascular Center Research Institute, Suita-City, Osaka, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- * E-mail: ,
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25
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Yokoyama M, Shimizu I, Nagasawa A, Yoshida Y, Katsuumi G, Wakasugi T, Hayashi Y, Ikegami R, Suda M, Ota Y, Okada S, Fruttiger M, Kobayashi Y, Tsuchida M, Kubota Y, Minamino T. p53 plays a crucial role in endothelial dysfunction associated with hyperglycemia and ischemia. J Mol Cell Cardiol 2019; 129:105-117. [PMID: 30790589 DOI: 10.1016/j.yjmcc.2019.02.010] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Revised: 02/12/2019] [Accepted: 02/16/2019] [Indexed: 12/23/2022]
Abstract
p53 is a guardian of the genome that protects against carcinogenesis. There is accumulating evidence that p53 is activated with aging. Such activation has been reported to contribute to various age-associated pathologies, but its role in vascular dysfunction is largely unknown. The aim of this study was to investigate whether activation of endothelial p53 has a pathological effect in relation to endothelial function. We established endothelial p53 loss-of-function and gain-of-function models by breeding endothelial-cell specific Cre mice with floxed Trp53 or floxed Mdm2/Mdm4 mice, respectively. Then we induced diabetes by injection of streptozotocin. In the diabetic state, endothelial p53 expression was markedly up-regulated and endothelium-dependent vasodilatation was significantly impaired. Impairment of vasodilatation was significantly ameliorated in endothelial p53 knockout (EC-p53 KO) mice, and deletion of endothelial p53 also significantly enhanced the induction of angiogenesis by ischemia. Conversely, activation of endothelial p53 by deleting Mdm2/Mdm4 reduced both endothelium-dependent vasodilatation and ischemia-induced angiogenesis. Introduction of p53 into human endothelial cells up-regulated the expression of phosphatase and tensin homolog (PTEN), thereby reducing phospho-eNOS levels. Consistent with these results, the beneficial impact of endothelial p53 deletion on endothelial function was attenuated in EC-p53 KO mice with an eNOS-deficient background. These results show that endothelial p53 negatively regulates endothelium-dependent vasodilatation and ischemia-induced angiogenesis, suggesting that inhibition of endothelial p53 could be a novel therapeutic target in patients with metabolic disorders.
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Affiliation(s)
- Masataka Yokoyama
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan; Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Ayako Nagasawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan; Department of Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan; Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Yusuke Ota
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Sho Okada
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Marcus Fruttiger
- Institute of Ophthalmology, University College London, London EC1V 9EL, UK
| | - Yoshio Kobayashi
- Department of Cardiovascular Medicine, Chiba University Graduate School of Medicine, Chiba 260-8670, Japan
| | - Masanori Tsuchida
- Department of Thoracic and Cardiovascular Surgery, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan
| | - Yoshiaki Kubota
- Department of Anatomy, Keio University School of Medicine, Tokyo 160-8582, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata 951-8510, Japan.
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Ikegami R, Shimizu I, Sato T, Yoshida Y, Hayashi Y, Suda M, Katsuumi G, Li J, Wakasugi T, Minokoshi Y, Okamoto S, Hinoi E, Nielsen S, Jespersen NZ, Scheele C, Soga T, Minamino T. Gamma-Aminobutyric Acid Signaling in Brown Adipose Tissue Promotes Systemic Metabolic Derangement in Obesity. Cell Rep 2018; 24:2827-2837.e5. [DOI: 10.1016/j.celrep.2018.08.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Revised: 05/30/2018] [Accepted: 08/08/2018] [Indexed: 12/18/2022] Open
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27
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Furuuchi R, Shimizu I, Yoshida Y, Hayashi Y, Ikegami R, Suda M, Katsuumi G, Wakasugi T, Nakao M, Minamino T. Boysenberry polyphenol inhibits endothelial dysfunction and improves vascular health. PLoS One 2018; 13:e0202051. [PMID: 30106986 PMCID: PMC6091942 DOI: 10.1371/journal.pone.0202051] [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] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2018] [Accepted: 07/26/2018] [Indexed: 12/17/2022] Open
Abstract
Endothelial cells have an important role in maintaining vascular homeostasis. Age-related disorders (including obesity, diabetes, and hypertension) or aging per se induce endothelial dysfunction that predisposes to the development of atherosclerosis. Polyphenols have been reported to suppress age-related endothelial cell disorders, but their role in vascular function is yet to be determined. We investigated the influence of boysenberry polyphenol on vascular health under metabolic stress in a murine model of dietary obesity. We found that administration of boysenberry polyphenol suppressed production of reactive oxygen species (ROS) and increased production of nitric oxide (NO) in the aorta. It has been reported that p53 induces cellular senescence and has a crucial role in age-related disorders, including heart failure and diabetes. Administration of boysenberry polyphenol significantly reduced the endothelial p53 level in the aorta and ameliorated endothelial cell dysfunction in iliac arteries under metabolic stress. Boysenberry polyphenol also reduced ROS and p53 levels in cultured human umbilical vein endothelial cells (HUVECs), while increasing NO production. Uncoupled endothelial nitric oxide synthase (eNOS monomer) is known to promote ROS production. We found that boysenberry polyphenol reduced eNOS monomer levels both in vivo and in vitro, along with an increase of eNOS dimerization. To investigate the components of boysenberry polyphenol mediating these favorable biological effects, we extracted the anthocyanin fractions. We found that anthocyanins contributed to suppression of ROS and p53, in association with increased NO production and eNOS dimerization. In an ex vivo study, anthocyanins promoted relaxation of iliac arteries from mice with dietary obesity. These findings indicate that boysenberry polyphenol and anthocyanins, a major component of this polyphenol, inhibit endothelial dysfunction and contribute to maintenance of vascular homeostasis.
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Affiliation(s)
- Ryo Furuuchi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Bourbon Corporation, Niigata, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masaaki Nakao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- * E-mail: ,
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28
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Suda M, Shimizu I, Yoshida Y, Hayashi Y, Katsuumi G, Ikegami R, Wakasugi T, Nagasawa A, Nakao M, Furuuchi R, Ujiie A, Ozawa T, Minamino T. P595Senescence-associated glycoprotein (SAGP) inhibits age-related endothelial dysfunction by the activation of mitophagy in vascular diseases. Eur Heart J 2018. [DOI: 10.1093/eurheartj/ehy564.p595] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- M Suda
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - I Shimizu
- Niigata University, Division of molecular aging and cell biology, Niigata, Japan
| | - Y Yoshida
- Niigata University, Division of molecular aging and cell biology, Niigata, Japan
| | - Y Hayashi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - G Katsuumi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Ikegami
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Wakasugi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - A Nagasawa
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - M Nakao
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - R Furuuchi
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - A Ujiie
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Ozawa
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - T Minamino
- Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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29
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Katsuumi G, Shimizu I, Yoshida Y, Hayashi Y, Ikegami R, Suda M, Wakasugi T, Nakao M, Minamino T. Catecholamine-Induced Senescence of Endothelial Cells and Bone Marrow Cells Promotes Cardiac Dysfunction in Mice. Int Heart J 2018; 59:837-844. [DOI: 10.1536/ihj.17-313] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Masaaki Nakao
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
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30
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Kayamori H, Shimizu I, Yoshida Y, Hayashi Y, Suda M, Ikegami R, Katsuumi G, Wakasugi T, Minamino T. Amlodipine Inhibits Vascular Cell Senescence and Protects Against Atherogenesis Through the Mechanism Independent of Calcium Channel Blockade. Int Heart J 2018; 59:607-613. [PMID: 29681573 DOI: 10.1536/ihj.17-265] [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] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Vascular cells have a finite lifespan and eventually enter irreversible growth arrest called cellular senescence. We have previously suggested that vascular cell senescence contributes to the pathogenesis of human atherosclerosis. Amlodipine is a mixture of two enantiomers, one of which (S- enantiomer) has L-type channel blocking activity, while the other (R+ enantiomer) shows ~1000-fold weaker channel blocking activity than S- enantiomer and has other unknown effects. It has been reported that amlodipine inhibits the progression of atherosclerosis in humans, but the molecular mechanism of this beneficial effect remains unknown. Apolipoprotein E-deficient mice on a high-fat diet were treated with amlodipine, its R+ enantiomer or vehicle for eight weeks. Compared with vehicle treatment, both amlodipine and the R+ enantiomer significantly reduced the number of senescent vascular cells and inhibited plaque formation to a similar extent. Expression of the pro-inflammatory molecule interleukin-1β was markedly upregulated in vehicle-treated mice, but was inhibited to a similar extent by treatment with amlodipine or the R+ enantiomer. Likewise, activation of p53 (a critical inducer of senescence) was markedly suppressed by treatment with amlodipine or the R+ enantiomer. These results suggest that amlodipine inhibits vascular cell senescence and protects against atherogenesis at least partly by a mechanism that is independent of calcium channel blockade.
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Affiliation(s)
- Hiromi Kayamori
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
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Abstract
Left main coronary compression syndrome rarely occurs in patients with severe pulmonary hypertension. A 65-year-old woman with severe pulmonary hypertension due to an atrial septal defect suffered from angina on effort. Cardiac computed-tomography and coronary angiography revealed considerable stenosis of the left main coronary artery (LMA) caused by compression between the dilated main pulmonary artery trunk and the sinus of valsalva. Stenting of the LMA under intravascular ultrasound imaging was effective for the treatment of angina. We herein report the diagnosis and management of this condition with a brief literature review.
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Affiliation(s)
- Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Takuya Ozawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Satoru Hirono
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Masahiro Ito
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Japan
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32
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Ozawa T, Suda M, Ikegami R, Takano T, Wakasugi T, Yanagawa T, Tanaka K, Ozaki K, Hirono S, Minamino T. Dual Antiplatelet Therapy Guided by CYP2C19 Polymorphisms after Implantation of Second-Generation Drug-Eluting Stents for Management of Acute Coronary Syndrome. Int Heart J 2018; 59:21-26. [DOI: 10.1536/ihj.17-005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Affiliation(s)
- Takuya Ozawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Toshiki Takano
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Takao Yanagawa
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Komei Tanaka
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Kazuyuki Ozaki
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | | | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
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33
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Abstract
It is thought that at least 6,500 low-molecular-weight metabolites exist in humans, and these metabolites have various important roles in biological systems in addition to proteins and genes. Comprehensive assessment of endogenous metabolites is called metabolomics, and recent advances in this field have enabled us to understand the critical role of previously unknown metabolites or metabolic pathways in the cardiovascular system. In this review, we will focus on heart failure and how metabolomic analysis has contributed to improving our understanding of the pathogenesis of this critical condition.
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Affiliation(s)
- Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences.,Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences
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34
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Suda M, Shimizu I, Yoshida Y, Hayashi Y, Ikegami R, Katsuumi G, Wakasugi T, Yoshida Y, Okuda S, Soga T, Minamino T. Inhibition of dipeptidyl peptidase-4 ameliorates cardiac ischemia and systolic dysfunction by up-regulating the FGF-2/EGR-1 pathway. PLoS One 2017; 12:e0182422. [PMID: 28771625 PMCID: PMC5542565 DOI: 10.1371/journal.pone.0182422] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [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: 05/14/2017] [Accepted: 07/18/2017] [Indexed: 01/21/2023] Open
Abstract
Dipeptidyl peptidase 4 inhibitors are used worldwide in the management of diabetes, but their role in the prevention or treatment of cardiovascular disorders has yet to be defined. We found that linagliptin, a DPP-4 inhibitor, suppressed capillary rarefaction in the hearts of mice with dietary obesity. Metabolomic analysis performed with capillary electrophoresis/mass spectrometry (LC-MS/MS) showed that linagliptin promoted favorable metabolic remodeling in cardiac tissue, which was characterized by high levels of citrulline and creatine. DNA microarray analysis revealed that the cardiac tissue level of early growth response protein 1 (EGR-1), which activates angiogenesis, was significantly reduced in untreated mice with dietary obesity, while this decrease was inhibited by administration of linagliptin. Mature fibroblast growth factor 2 (FGF-2) has a putative truncation site for DPP-4 at the NH2-terminal, and LC-MS/MS showed that recombinant DPP-4 protein cleaved the NH2-terminal dipeptides of mature FGF-2. Incubation of cultured neonatal rat cardiomyocytes with FGF-2 increased Egr1 expression, while it was suppressed by recombinant DPP-4 protein. Furthermore, vascular endothelial growth factor-A had a critical role in mediating FGF-2/EGR-1 signaling. In conclusion, pharmacological inhibition of DPP-4 suppressed capillary rarefaction and contributed to favorable remodeling of cardiac metabolism in mice with dietary obesity.
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Affiliation(s)
- Masayoshi Suda
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ippei Shimizu
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yohko Yoshida
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- Division of Molecular Aging and Cell Biology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yuka Hayashi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Ryutaro Ikegami
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Goro Katsuumi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Takayuki Wakasugi
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yutaka Yoshida
- Department of Structural Pathology, Institute of Nephrology, Graduate School of Medical and Dental Sciences, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Shujiro Okuda
- Division of Bioinformatics, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Tomoyoshi Soga
- Institute for Advanced Biosciences, Keio University, Yamagata, Japan
| | - Tohru Minamino
- Department of Cardiovascular Biology and Medicine, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
- * E-mail:
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Ikegami R, Shimizu I, Sato T, Jiao Y, Yoshida Y, Suda M, Hayashi Y, Kayamori H, Katsuumi G, Minamino T. P1588The pathological role of gamma-aminobutyric acid (GABA) signaling in promoting brown adipose tissue dysfunction in obesity. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p1588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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36
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Suda M, Shimizu I, Yoshida Y, Hayashi Y, Katsuumi G, Kayamori H, Ikegami R, Jiao S, Wakasugi T, Nagasawa A, Ujiie A, Ozawa T, Minamino T. P178A novel protein Senescence-associated glycoprotein (SAGP) is involved in the vessel homeostasis in murine hind limb ischemia model. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx501.p178] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Hayashi Y, Shimizu I, Yoshida Y, Ikegami R, Katsuumi G, Suda M, Kayamori H, Minamino T. P2096The pathological role of coagulation factors in promoting brown adipose tissue dysfunction and systemic metabolic disorder in obesity. Eur Heart J 2017. [DOI: 10.1093/eurheartj/ehx502.p2096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Inoue-Nishimoto T, Hanafusa T, Hirohata A, Mabuchi-Kiyohara E, Mizoguchi N, Matsumoto K, Sakamoto S, Ishii N, Hashimoto T, Ikegami R. IgG/IgA pemphigus representing pemphigus vegetans caused by low titres of IgG and IgA antibodies to desmoglein 3 and IgA antibodies to desmocollin 3. J Eur Acad Dermatol Venereol 2015; 30:1229-31. [PMID: 25865168 DOI: 10.1111/jdv.13158] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- T Inoue-Nishimoto
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
| | - T Hanafusa
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
| | - A Hirohata
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
| | - E Mabuchi-Kiyohara
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
| | - N Mizoguchi
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
| | - K Matsumoto
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
| | - S Sakamoto
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
| | - N Ishii
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
| | - T Hashimoto
- Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, Fukuoka, Japan
| | - R Ikegami
- Department of Dermatology, Japan Community Healthcare Organization Osaka Hospital, Osaka, Japan
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Tsuchida K, Ikegami R, Sato M, Shobugawa Y, Okubo T, Yano T, Tanaka K, Kobayashi T, Hosaka Y, Ozaki K, Takahashi K, Miida T, Oda H. Primary percutaneous coronary intervention and bleeding risk in the era of drug-eluting stent: a long-term cohort study. Cardiovasc Interv Ther 2014; 30:216-26. [PMID: 25381200 DOI: 10.1007/s12928-014-0306-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Accepted: 10/28/2014] [Indexed: 10/24/2022]
Abstract
Data of long-term efficacy and safety including bleeding risk associated with antithrombotic regimens after primary percutaneous coronary intervention (PCI) using first-generation drug-eluting stent (1st DES) are scarce. Consecutive 422 patients with ST-elevation myocardial infarction (STEMI) underwent primary PCI with DES (285 patients), bare metal stent (BMS, 58 patients) or balloon angioplasty (BA 79 patients). At a median follow-up of 44 months, major cardiovascular events were significantly lower for 1st DES compared with BMS and BA (11.9 vs. 25.9 vs. 16.5 %, p = 0.027). Cardiac death, recurrent myocardial infarction and target lesion revascularization (TLR), differed among the groups (DES 8.8 %; BMS 13.8 %; BA 17.7 %; p = 0.019), although the superiority of DES subsided beyond 1 year by increased late TLRs. Major bleedings were not higher in DES than in BMS and BA (4.6 vs. 6.9 vs. 1.5 %, p = 0.252). Multivariate logistic regression analysis revealed that both dual antiplatelet therapy (DAPT) >24 months and indefinite oral anticoagulation (OAC) were associated with a major bleeding. The risk was even greater with triple antithrombotic therapy (odds ratio 19.5; 95 % confidence interval 3.73-102.07; p < 0.0001). 1st DES showed favorable overall long-term clinical outcome in STEMI, with an inherent limitation of an increased risk of late TLR. Prolonged DAPT and OAC synergistically increase the risk of major bleeding after primary PCI.
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Affiliation(s)
- Keiichi Tsuchida
- Department of Cardiology, Niigata City General Hospital, Shumoku 463-7, Chuo-ku, Niigata, 950-1197, Japan,
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Shimizu I, Yoshida Y, Suda M, Hayashi Y, Shuang J, Ikegami R, Katsuumi G, Kayamori H, Walsh K, Minamino T. Vascular Rarefaction Mediates Whitening of Brown Fat in Dietary Obesity. J Card Fail 2014. [DOI: 10.1016/j.cardfail.2014.07.102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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41
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Kayamori H, Shimizu I, Yokoyama M, Yoshida Y, Suda M, Hayashi Y, Shuang J, Ikegami R, Katsuumi G, Minamino T. Endothelial p53 Has a Crucial Role for Vascular Dysfunction. J Card Fail 2014. [DOI: 10.1016/j.cardfail.2014.07.121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Mangini S, Higuchi ML, Reis MM, Ikegami R, Kawakami J, Palomino S, Pomerantzeff PM, Fiorelli AI, Bacal F, Bocchi EA. Infectious agents in the myocardium of patients with dilated cardiomyopathy: idiopathic, chagasic, ischemic and other etiologies. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.2823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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43
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Ikegami R, Tsuchida K, Oda H. Acute myocardial infarction caused by spontaneous coronary intramural hematoma. J Invasive Cardiol 2012; 24:692-693. [PMID: 23220989] [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: 06/01/2023]
Abstract
A 49-year-old male presented to our emergency department with sudden anterior chest pain. His electrocardiogram revealed ST-segment elevations in leads II, III and aVF. An inferior acute myocardial infarction was suspected. Emergent coronary angiography (CAG) showed there was a long lesion in the right coronary artery (RCA), which continued from the proximal to the distal part of RCA with 50% stenosis and narrowed further to 99% stenosis at the distal end. Intravascular ultrasound (IVUS) examination demonstrated a diffuse intramural hematoma raging from the proximal to the distal part of the RCA. No visualization of the intimal flap was identified by IVUS, indicating coronary artery dissection as a pathogenesis of this hematoma formation. After intracoronary injection of isosorbide dinitrate, the 99% stenosis regressed to 50% spontaneously. Neither balloon angioplasty nor stenting was performed. He was discharged home free from symptoms 9 days after the procedure. Thirty-day follow-up CAG revealed an almost normal finding of the RCA and IVUS delineated a complete restoration of the intramural hematoma.
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Affiliation(s)
- Ryutaro Ikegami
- Department of Cardiology, Niigata City General Hospital, Shumoku 463-7, Chuo-ku, Niigata 950-1197, Japan.
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Yamada M, Kozakura R, Ikegami R, Nakamura K, Kaku Y, Yoshii M, Haritani M. Enterovirus encephalomyelitis in pigs in Japan caused by porcine teschovirus. Vet Rec 2004; 155:304-6. [PMID: 15478502 DOI: 10.1136/vr.155.10.304] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- M Yamada
- National Institute of Animal Health, Kannondai, Tsukuba, Ibaraki 305-0856, Japan
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Affiliation(s)
- S Inui
- Department of Dermatology, Course of Molecular Medicine, Graduate School of Medicine,Osaka University, 2-2 C-5 Yamadaoka, Suita-shi, Osaka 565-0871, Japan.
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46
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Ikegami R, Sugimoto Y, Segi E, Katsuyama M, Karahashi H, Amano F, Maruyama T, Yamane H, Tsuchiya S, Ichikawa A. The expression of prostaglandin E receptors EP2 and EP4 and their different regulation by lipopolysaccharide in C3H/HeN peritoneal macrophages. J Immunol 2001; 166:4689-96. [PMID: 11254729 DOI: 10.4049/jimmunol.166.7.4689] [Citation(s) in RCA: 102] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
The expression and regulation of the PGE receptors, EP(2) and EP(4), both of which are coupled to the stimulation of adenylate cyclase, were examined in peritoneal resident macrophages from C3H/HeN mice. mRNA expression of EP(4) but not EP(2) was found in nonstimulated cells, but the latter was induced by medium change alone, and this induction was augmented by LPS. mRNA expression of EP(4) was down-regulated by LPS but not by medium change. PGE(2) increased the cAMP content of both LPS-treated and nontreated cells. ONO-604, an EP(4) agonist, also increased cAMP content in nonstimulated cells and in cells treated with LPS for 3 h, but not for 6 h. Butaprost, an EP(2) agonist, was effective only in the cells treated with LPS for 6 h. The inhibitory effects of ONO-604 on TNF-alpha and IL-12 production were equipotent with PGE(2) at any time point, but the inhibitory effects of butaprost were only seen from 14 h after stimulation. PGE(2) or dibutyryl cAMP alone, but not butaprost, reduced EP(4) expression, and indomethacin reversed the LPS-induced down-regulation of EP(4), indicating that the down-regulation of EP(4) is mediated by LPS-induced PG synthesis and EP(4) activation. Indeed, when we used C3H/HeJ (LPS-hyporesponsive) macrophages, such reduction in EP(4) expression was found in the cells treated with PGE(2) alone, but not in LPS-treated cells. In contrast, up-regulation of EP(2) expression was again observed in LPS-treated C3H/HeJ macrophages. These results suggest that EP(4) is involved mainly in the inhibition of cytokine release, and that the gene expression of EP(2) and EP(4) is differentially regulated during macrophage activation.
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MESH Headings
- Alprostadil/analogs & derivatives
- Alprostadil/pharmacology
- Animals
- Cyclic AMP/biosynthesis
- Dinoprostone/biosynthesis
- Dinoprostone/metabolism
- Dinoprostone/pharmacology
- Down-Regulation/drug effects
- Down-Regulation/genetics
- Down-Regulation/immunology
- Female
- Indomethacin/pharmacology
- Interleukin-12/biosynthesis
- Lipopolysaccharides/pharmacology
- Macrophage Activation/drug effects
- Macrophage Activation/genetics
- Macrophage Activation/immunology
- Macrophages, Peritoneal/enzymology
- Macrophages, Peritoneal/immunology
- Macrophages, Peritoneal/metabolism
- Mice
- Mice, Inbred C3H
- Prostaglandin-Endoperoxide Synthases/biosynthesis
- Prostaglandins E, Synthetic/pharmacology
- RNA, Messenger/biosynthesis
- Receptors, Prostaglandin E/agonists
- Receptors, Prostaglandin E/biosynthesis
- Receptors, Prostaglandin E/genetics
- Receptors, Prostaglandin E, EP4 Subtype
- Tumor Necrosis Factor-alpha/biosynthesis
- Up-Regulation/drug effects
- Up-Regulation/genetics
- Up-Regulation/immunology
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Affiliation(s)
- R Ikegami
- Department of Physiological Chemistry, Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, Japan
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Abstract
In this study, we demonstrate the developmental activation, in the zebrafish embryo, of a surveillance mechanism which triggers apoptosis to remove damaged cells. We determine the time course of activation of this mechanism by exposing embryos to camptothecin, an agent which specifically inhibits topoisomerase I within the DNA replication complex and which, as a consequence of this inhibition, also produces strand breaks in the genomic DNA. In response to an early (pre-gastrula) treatment with camptothecin, apoptosis is induced at a time corresponding approximately to mid-gastrula stage in controls. This apoptotic response to a block of DNA replication can also be induced by early (pre-MBT) treatment with the DNA synthesis inhibitors hydroxyurea and aphidicolin. After camptothecin treatment, a high proportion of cells in two of the embryo's three mitotic domains (the enveloping and deep cell layers), but not in the remaining domain (the yolk syncytial layer), undergoes apoptosis in a cell-autonomous fashion. The first step in this response is an arrest of the proliferation of all deep- and enveloping-layer cells. These cells continue to increase in nuclear volume and to synthesize DNA. Eventually they become apoptotic, by a stereotypic pathway which involves cell membrane blebbing, "margination" and fragmentation of nuclei, and cleavage of the genomic DNA to produce a nucleosomal ladder. Fragmentation of nuclei can be blocked by the caspase-1,4,5 inhibitor Ac-YVAD-CHO, but not by the caspase-2,3,7[, 1] inhibitor Ac-DEVD-CHO. This suggests a functional requirement for caspase-4 or caspase-5 in the apoptotic response to camptothecin. Recently, Xenopus has been shown to display a developmental activation of the capability for stress- or damaged-induced apoptosis at early gastrula stage. En masse, our experiments suggest that the apoptotic responses in zebrafish and Xenopus are fundamentally similar. Thus, as for mammals, embryos of the lower vertebrates exhibit the activation of surveillance mechanisms, early in development, to produce the selective apoptosis of damaged cells.
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Affiliation(s)
- R Ikegami
- Division of Developmental Biology and Research Institute, Hospital for Sick Children, 555 University Avenue, Toronto, Ontario, M5G 1X8, Canada
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Katsuyama M, Ikegami R, Karahashi H, Amano F, Sugimoto Y, Ichikawa A. Characterization of the LPS-stimulated expression of EP2 and EP4 prostaglandin E receptors in mouse macrophage-like cell line, J774.1. Biochem Biophys Res Commun 1998; 251:727-31. [PMID: 9790977 DOI: 10.1006/bbrc.1998.9540] [Citation(s) in RCA: 73] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The expression of prostaglandin (PG) E receptor subtypes were characterized in J774.1, a mouse macrophage-like cell line. EP2- and EP4-mRNAs were found to be expressed. The expression of EP2 mRNA increased by the addition of lipopolysaccharide (LPS) in a dose-dependent manner. EP2 mRNA rapidly increased by more than 5-fold of the control level at 1 h, and decreased after 4 h. EP4 mRNA increased by only 2-fold of the control at 2 h. Gamma interferon inhibited both basal and LPS-induced expression of EP2 mRNA but did not affect the expression level of EP4 mRNA. When tumor necrosis factor-alpha (TNF-alpha) accumulation was measured after the treatment ofthe cells with LPS for 90 min, PGE2 was found to inhibit this accumulation, but butaprost, an EP2-selective agonist, did not. When TNF-alpha release was measured after the treatment of the cells with LPS for 8 h, accumulation was inhibited by butaprost as well as PGE2. These results indicated that the inhibitory effects of PGE2 on TNF-alpha production are mediated by EP2 and EP4 in macrophages, and that expression regulation of EP2 and EP4 in macrophages is quite different.
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Affiliation(s)
- M Katsuyama
- Department of Physiological Chemistry, Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto, 606-8501, Japan
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Yager TD, Ikegami R, Rivera-Bennetts AK, Zhao C, Brooker D. High-resolution imaging at the cellular and subcellular levels in flattened whole mounts of early zebrafish embryos. Biochem Cell Biol 1998; 75:535-50. [PMID: 9551178] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
We describe a rapid and sensitive method for high-resolution imaging at the cellular and subcellular levels in the whole-mount zebrafish embryo. The procedure involves fixing and staining the embryo, followed by deyolking and flattening it under a cover slip, to produce a planar mount that is 20 to 100 microns thick. Such a flattened whole mount allows imaging with a spatial resolution of approximately 500 nm in the x-y plane and does not require the use of embedding, sectioning, confocal microscopy, or computational deblurring procedures. We can resolve all individual nuclei and chromosome sets in the embryo, up to the late gastrula stage (10,000 cell stage). In addition, older embryos (through the segmentation stage) can also be examined, with the preservation of significant morphological detail. Because of its ability to resolve subcellular detail, the flattened whole-mount method can provide significant biological information beyond what can be obtained from conventional (three-dimensional) whole mounts. We have used the flattened whole-mount method to study subcellular events related to progression through the cell cycle or to apoptosis, in cells of the early zebrafish embryo. A specific DNA-binding dye (Hoechst 33258) or an antibody against a chromosomal protein (histone H1) was used to stain the nuclei of individual cells in the embryo. This allowed us to determine the spatial positions of all the individual cells, and also their stages in the cell cycle. A terminal transferase (TUNEL) assay was used to detect apoptotic cells. This combination of specific stains allowed us to study the behaviors of groups of cells in situ, within the developing zebrafish embryo.
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Affiliation(s)
- T D Yager
- Division of Developmental Biology, Hospital for Sick Children, Toronto, ON, Canada.
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50
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Katsuyama M, Sugimoto Y, Okano K, Segi E, Ikegami R, Negishi M, Ichikawa A. Characterization of the gene for the mouse prostaglandin E receptor subtype EP2: tissue-specific initiation of transcription in the macrophage and the uterus. Biochem J 1998; 330 ( Pt 3):1115-21. [PMID: 9494075 PMCID: PMC1219251 DOI: 10.1042/bj3301115] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Genomic DNA clones for the mouse prostaglandin (PG) E receptor subtype EP2 were isolated and characterized. The mouse EP2 gene is composed of 2 exons and 1 intron, and spans 16 kb. The intron which is approx. 12 kb in length is located at the end of the sixth transmembrane domain, as with other prostanoid receptor genes. Based on this structure, transcripts were analysed in endotoxin-treated macrophages and pseudopregnant uteri, in which abundant expression of EP2 mRNA was observed. Sequence analysis of cDNA clones from these origins and Northern hybridization of these RNAs revealed that the uterine EP2 mRNA (U-type) has a longer 5'-untranslated region than the macrophage EP2 transcript (M-type). The major transcription initiation sites for M-type and U-type EP2 are located 124 and 769 bp upstream of the translation start site, respectively. The M-type was expressed in various tissues, whereas the U-type was found only in the uterus. The 2 kb segment containing the immediate 5'-flanking and 5'-noncoding regions contain three consensus sequences for the NF-IL6 binding site, one consensus sequence for the NF-kappaB binding site, four AP-2 consensus sequences, one AP-4 consensus sequence, one potential cAMP response element, and one potential progesterone response element. These results suggest that EP2 gene expression in the macrophage and uterus is under the control of distinct mechanisms involving alternative promoters.
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Affiliation(s)
- M Katsuyama
- Department of Physiological Chemistry, Faculty of Pharmaceutical Sciences, Kyoto University, Kyoto 606, Japan
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