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Chen Y, Sun S, Zhou X, He M, Li Y, Liu C, Ta D. Low-intensity pulsed ultrasound and parathyroid hormone improve muscle atrophy in estrogen deficiency mice. ULTRASONICS 2023; 132:106984. [PMID: 36944299 DOI: 10.1016/j.ultras.2023.106984] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 02/12/2023] [Accepted: 03/09/2023] [Indexed: 05/29/2023]
Abstract
Due to aging and long-term estrogen deficiency, postmenopausal women suffer muscle atrophy (MA), which is characterized by decreased muscle mass and muscle quality. Low-intensity pulsed ultrasound (LIPUS) is an acoustic wave inducing biological effects mainly by the mechanical stimulation and used as a non-invasive physical therapy for muscle repair. Parathyroid hormone (PTH) is an 84-amino-acid polypeptide, and its bioactive fragment [PTH (1-34)] has potential application in the treatment of MA. We speculate that the combination of physical therapy (i.e., the LIPUS) and regulatory hormone (i.e., the PTH) would be more effective in the treatment of MA. The objective of this study was to evaluate the individual and combined effects of LIPUS and PTH therapy on MA in estrogen deficiency mice. Seventy 8-week-old female C57BL/6J mice were used in this study and the MA model was induced by an intraperitoneal injection of 4-vinylcyclohexene diepoxide (VCD) for 20 consecutive days. The VCD-induced MA mice were randomly divided into MA, LIPUS, PTH and LIPUS + PTH (Combined) groups (n = 10/group). In the LIPUS group, the mice were treated by LIPUS in bilateral quadriceps muscles for 20 min, five times a week for 6 weeks. In the PTH group, the mice received subcutaneous injection of PTH (1-34) (80 ug/kg/d) five times a week, for 6 weeks. In the Combined group, the PTH was administrated 30 min before each LIPUS session. Hematoxylin-eosin (H&E) staining, serum biochemical analysis and quantitative real-time polymerase chain reaction (qRT-PCR) were applied to evaluate the therapeutic effects of related treatments. The results showed that the MA mice had a disordered estrus cycle, significantly decreased muscle mass and myofibers cross-sectional area (CSA). After treatments, LIPUS, PTH and Combined groups had a significantly increased CSA, compared with the MA mice without treatment. In addition, Combined group had a significantly increased mRNA expression of Pax7, MyoD and MyoG, compared with LIPUS and PTH monotherapy groups. Our findings indicated that the combination of LIPUS and PTH treatment improves muscle regeneration ability, which might have potential for treating MA in postmenopausal women.
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Affiliation(s)
- Yuefu Chen
- Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
| | - Shuxin Sun
- Academy for Engineering and Technology, Fudan University, Shanghai 200433, China
| | - Xinyan Zhou
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai 200438, China
| | - Min He
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai 200438, China
| | - Ying Li
- Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai 200438, China.
| | - Chengcheng Liu
- Academy for Engineering and Technology, Fudan University, Shanghai 200433, China; State Key Laboratory of Integrated Chips and Systems, Fudan University, Shanghai 201203, China.
| | - Dean Ta
- Academy for Engineering and Technology, Fudan University, Shanghai 200433, China; Center for Biomedical Engineering, School of Information Science and Technology, Fudan University, Shanghai 200438, China; State Key Laboratory of Integrated Chips and Systems, Fudan University, Shanghai 201203, China
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Yang P, Liang K, Wang W, Zhou D, Chen Y, Jiang X, Fu R, Zhu B, Lin X. LncRNA SOX2-OTinhibitionprotects against myocardialischemia/reperfusion-inducedinjury via themicroRNA-186-5p (miR-186-5p)/Yin Yang 1 (YY1)pathway. Bioengineered 2022; 13:280-290. [PMID: 34967264 PMCID: PMC8805857 DOI: 10.1080/21655979.2021.2000229] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 10/27/2021] [Indexed: 01/15/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) exert essential effects in regulating myocardial ischemia/reperfusion (MI/R)-induced injury. This work intended to explore the functions of lncRNA SOX2-OT and its regulatory mechanism within MI/R-induced injury. In this study, gene expression was determined by RT-qPCR. Western blotting was applied for the detection of protein levels. Pro-inflammatory cytokine concentrations, cardiomyocyte viability, and apoptosis were detected via ELISA, CCK-8 and flow cytometry. In the in vitro model, SOX2-OT and YY1 were both upregulated, while miR-186-5p was downregulated. SOX2-OT knockdown attenuated oxygen-glucose deprivation/reoxygenation (OGD/R)-induced cardiomyocyte dysregulation through relieving inflammation, promoting proliferation, and reducing apoptosis in OGD/R-treated H2C9 cells. SOX2-OT positively regulated YY1 expression via miR-186-5p. Moreover, miR-186-5p inhibition or YY1 upregulation abolished the effects of SOX2-OT blocking on the inflammatory responses, proliferation, and apoptosis of OGD/R-challenged H2C9 cells. In conclusion, our results, for the first time, demonstrated that SOX2-OT inhibition attenuated MI/R injury in vitro via regulating the miR-186-5p/YY1 axis, offering potential therapeutic targets for MI/R injury treatment.
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Affiliation(s)
- Pengjie Yang
- Department of Thoracic Surgery, Affiliated People’s Hospital of Inner Mongolia Medical University
| | - Kun Liang
- Geriatric Medical Center, Inner Mongolia People’s Hospital, Hohhot, China
| | - Weisong Wang
- Department of Dispensary, Affiliated Hospital of Inner Mongolia Medical University
| | - Dehua Zhou
- Department of Emergency, People’s Hospital of Inner Mongolia Autonomous Region
| | - Yuan Chen
- Department of Pharmacy, Affiliated People’s Hospital of Inner Mongolia Medical University, Hohhot, P.R.China
| | - Xueyan Jiang
- Department of Pharmacy, Affiliated People’s Hospital of Inner Mongolia Medical University, Hohhot, P.R.China
| | - Rong Fu
- Department of Pharmacy, Affiliated People’s Hospital of Inner Mongolia Medical University, Hohhot, P.R.China
| | - Benben Zhu
- Department of Pharmacy, Affiliated People’s Hospital of Inner Mongolia Medical University, Hohhot, P.R.China
| | - Xuefeng Lin
- Department of Cardiovascular Medicine, First Affiliated Hospital of Baotou Medical College, Baotou, P.R.China
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Song J, Du J, Tan X, Wu Z, Yuan J, Cong B. Dexmedetomidine protects the heart against ischemia reperfusion injury via regulation of the bradykinin receptors. Eur J Pharmacol 2021; 911:174493. [PMID: 34506777 DOI: 10.1016/j.ejphar.2021.174493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/26/2021] [Accepted: 09/06/2021] [Indexed: 11/25/2022]
Abstract
BACKGROUND Dexmedetomidine (DEX) has been reported to protect the heart against ischemia reperfusion (I/R) injury. However, the exact mechanisms are still not fully understood. METHODS AND RESULTS A rat cardiac I/R injury model was induced by ligation of the left anterior descending coronary artery for 1 h and subsequent reperfusion for 2 h, and DEX was administered intravenously 30 min before ischemia. We confirmed that DEX treatment mitigated cardiac I/R injury. Interestingly, we found that DEX regulated the expression of bradykinin (BK) receptors (B1R and B2R) in rat hearts during I/R injury and enhanced the protective action of BK administered during reperfusion. Moreover, in vitro hypoxia reoxygenation (H/R) injury was induced in neonatal rat cardiomyocytes (CMs), and DEX was administered 1 h before hypoxia. The in vitro findings were consistent with the in vivo experiments. We found that an α2-adrenoceptor (α2-AR) antagonist (yohimbine) completely aborted DEX-induced B1R and B2R regulation; an adenylyl cyclase (AC) agonist (forskolin) blocked B1R downregulation, while a phosphatidylinositol 3-kinase (PI3K) inhibitor (LY294002) blocked B2R upregulation. The above findings indicated that DEX interacted with α2-AR in cardiomyocytes, inhibited B1R expression via suppression of AC, and stimulated B2R expression via activation of PI3K. CONCLUSIONS DEX regulates BK receptor expression and potentiates the protection of BK in cardiac I/R injury, which suggests that modulating endogenous cardioprotective factors may play an important role in DEX-induced cardioprotection.
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Affiliation(s)
- Jinchao Song
- Department of Anesthesiology, Shidong Hospital Affiliated to University of Shanghai for Science and Technology, Shanghai, 200438, China.
| | - Jiankui Du
- Department of Physiology, Naval Medical University (Second Military Medical University), Shanghai, 200433, China
| | - Xing Tan
- Department of Physiology, Naval Medical University (Second Military Medical University), Shanghai, 200433, China
| | - Zhaotang Wu
- Department of Physiology, Naval Medical University (Second Military Medical University), Shanghai, 200433, China
| | - Jihong Yuan
- Department of Nephropathy, Shanghai Seventh People's Hospital, Shanghai, 200137, China
| | - Binhai Cong
- Department of Physiology, Naval Medical University (Second Military Medical University), Shanghai, 200433, China.
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Popov SV, Prokudina ES, Mukhomedzyanov AV, Naryzhnaya NV, Ma H, Zurmanova JM, der Ven PFMV, Maslov LN. Cardioprotective and Vasoprotective Effects of Corticotropin-Releasing Hormone and Urocortins: Receptors and Signaling. J Cardiovasc Pharmacol Ther 2021; 26:575-584. [PMID: 34351805 DOI: 10.1177/1074248420985301] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Despite the recent progress in research and therapy, cardiovascular diseases are still the most common cause of death worldwide, thus new approaches are still needed. The aim of this review is to highlight the cardioprotective potential of urocortins and corticotropin-releasing hormone (CRH) and their signaling. It has been documented that urocortins and CRH reduce ischemic and reperfusion (I/R) injury, prevent reperfusion ventricular tachycardia and fibrillation, and improve cardiac contractility during reperfusion. Urocortin-induced increase in cardiac tolerance to I/R depends mainly on the activation of corticotropin-releasing hormone receptor-2 (CRHR2) and its downstream pathways including tyrosine kinase Src, protein kinase A and C (PKA, PKCε) and extracellular signal-regulated kinase (ERK1/2). It was discussed the possibility of the involvement of interleukin-6, Janus kinase-2 and signal transducer and activator of transcription 3 (STAT3) and microRNAs in the cardioprotective effect of urocortins. Additionally, phospholipase-A2 inhibition, mitochondrial permeability transition pore (MPT-pore) blockade and suppression of apoptosis are involved in urocortin-elicited cardioprotection. Chronic administration of urocortin-2 prevents the development of postinfarction cardiac remodeling. Urocortin possesses vasoprotective and vasodilator effect; the former is mediated by PKC activation and prevents an impairment of endothelium-dependent coronary vasodilation after I/R in the isolated heart, while the latter includes both cAMP and cGMP signaling and its downstream targets. As CRHR2 is expressed by both cardiomyocytes and vascular endothelial cells. Urocortins mediate both endothelium-dependent and -independent relaxation of coronary arteries.
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Affiliation(s)
- Sergey V Popov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Ekaterina S Prokudina
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Alexander V Mukhomedzyanov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Natalia V Naryzhnaya
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
| | - Huijie Ma
- Department of Physiology, 12553Hebei Medical University, Shijiazhuang, Hebei Province, China
| | - Jitka M Zurmanova
- Department of Physiology, Faculty of Science, 37740Charles University, Prague, Czech Republic
| | - Peter F M van der Ven
- Department of Molecular Cell Biology, Institute for Cell Biology, 9374University of Bonn, Bonn, Germany
| | - Leonid N Maslov
- Laboratory of Experimental Cardiology, 164253Cardiology Research Institute, Tomsk National Research Medical Center of the RAS, Tomsk, Russia
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Ruiz-Meana M, Boengler K, Garcia-Dorado D, Hausenloy DJ, Kaambre T, Kararigas G, Perrino C, Schulz R, Ytrehus K. Ageing, sex, and cardioprotection. Br J Pharmacol 2020; 177:5270-5286. [PMID: 31863453 DOI: 10.1111/bph.14951] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 11/13/2019] [Accepted: 11/18/2019] [Indexed: 12/12/2022] Open
Abstract
Translation of cardioprotective interventions aimed at reducing myocardial injury during ischaemia-reperfusion from experimental studies to clinical practice is an important yet unmet need in cardiovascular medicine. One particular challenge facing translation is the existence of demographic and clinical factors that influence the pathophysiology of ischaemia-reperfusion injury of the heart and the effects of treatments aimed at preventing it. Among these factors, age and sex are prominent and have a recognised role in the susceptibility and outcome of ischaemic heart disease. Remarkably, some of the most powerful cardioprotective strategies proven to be effective in young animals become ineffective during ageing. This article reviews the mechanisms and implications of the modulatory effects of ageing and sex on myocardial ischaemia-reperfusion injury and their potential effects on cardioprotective interventions. LINKED ARTICLES: This article is part of a themed issue on Risk factors, comorbidities, and comedications in cardioprotection. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v177.23/issuetoc.
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Affiliation(s)
- Marisol Ruiz-Meana
- Hospital Universitari Vall d'Hebron, Department of Cardiology, Vall d'Hebron Institut de Recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red-CV (CIBER-CV), Madrid, Spain
| | - Kerstin Boengler
- Institute of Physiology, Justus-Liebig University Giessen, Giessen, Germany
| | - David Garcia-Dorado
- Hospital Universitari Vall d'Hebron, Department of Cardiology, Vall d'Hebron Institut de Recerca (VHIR), Universitat Autonoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red-CV (CIBER-CV), Madrid, Spain
| | - Derek J Hausenloy
- Cardiovascular & Metabolic Disorders Program, Duke-National University of Singapore Medical School, Singapore.,National Heart Research Institute Singapore, National Heart Centre, Singapore.,Yong Loo Lin School of Medicine, National University Singapore, Singapore.,The Hatter Cardiovascular Institute, University College London, London, UK.,The National Institute of Health Research, University College London Hospitals Biomedical Research Centre, Research & Development, London, UK.,Tecnologico de Monterrey, Centro de Biotecnologia-FEMSA, Nuevo Leon, Mexico
| | - Tuuli Kaambre
- Laboratory of Chemical Biology, National Institute of Chemical Physics and Biophysics, Tallinn, Estonia
| | - Georgios Kararigas
- Charité - Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlinand Berlin Institute of Health, Berlin, Germany.,DZHK (German Centre for Cardiovascular Research), partner site Berlin, Berlin, Germany
| | - Cinzia Perrino
- Department of Advanced Biomedical Sciences, Federico II University, Naples, Italy
| | - Rainer Schulz
- Institute of Physiology, Justus-Liebig University Giessen, Giessen, Germany
| | - Kirsti Ytrehus
- Cardiovascular Research Group, Institute of Medical Biology, Faculty of Health Sciences, UiT The Arctic University of Norway, Tromsø, Norway
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6
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Huang M, Du J, Wang Y, Ma S, Hu T, Shang J, Yu Q, Zhu X, Zhang G, Cong B. Tissue kallikrein-related peptidase8 protects rat heart against acute ischemia reperfusion injury. Int J Biol Macromol 2019; 140:1126-1133. [PMID: 31449861 DOI: 10.1016/j.ijbiomac.2019.08.195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 08/22/2019] [Accepted: 08/22/2019] [Indexed: 01/06/2023]
Abstract
Tissue kallikrein-related peptidases (KLKs) play important roles in acute cardiac injury and cardiac remodeling. However, the exact cardiac actions of KLK8 have not been determined. Transgenic rat overexpressing KLK8 was established to examine the role of KLK8 in the heart. Cardiac injury was induced by ischemia/reperfusion (I/R) and examined by infarct size measurement and TUNEL staining. The molecular mechanisms were investigated in cultured neonatal rat cardiomyocytes (CMs). Western blot analysis was used to determine the protein levels. KLK8 protein level was significantly increased in the cardiac ischemic risk area. KLK8 overexpression mitigated I/R-induced cardiac injury, as evidenced by decreased infarct size and apoptosis in cardiac ischemic risk area in vivo. Via in vitro studies, it was found that KLK8 overexpression attenuated the Hypoxia/Reoxygenation (H/R) injury in CMs; both B2R and PAR2 antagonist significantly attenuated KLK8-induced protective actions under H/R injury. Moreover, KLK8 overexpressed CMs showed significant higher phosphorylation levels of Akt, ERK1/2 and PKA under H/R stimulation; B2R antagonist attenuated the phosphorylation levels of Akt and ERK1/2, while PAR2 antagonist attenuated the phosphorylation levels of PKA and ERK1/2. KLK8 protects the heart against I/R-induced cardiac injury, which may represent a new therapeutic target in cardiac medicine.
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Affiliation(s)
- Meineng Huang
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Jiankui Du
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Yifei Wang
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Shiyu Ma
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Ting Hu
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Jing Shang
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Qing Yu
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Xiaoyan Zhu
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Guanxin Zhang
- Department of Cardiothoracic Surgery, Changhai Hospital, Shanghai 200433, China.
| | - Binhai Cong
- Department of Physiology, Second Military Medical University, Shanghai 200433, China.
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Lo Muzio FP, Rozzi G, Rossi S, Gerbolés AG, Fassina L, Pelà G, Luciani GB, Miragoli M. In-situ optical assessment of rat epicardial kinematic parameters reveals frequency-dependent mechanic heterogeneity related to gender. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2019; 154:94-101. [PMID: 31126627 DOI: 10.1016/j.pbiomolbio.2019.05.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 05/06/2019] [Accepted: 05/08/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND Gender-related cardiac mechanics following the electrical activity has been investigated from basic to clinical research, but results are still controversial. The aim of this work is to study the gender related cardiac mechanics and to focus on its heart rate dependency. METHODS We employed 12 Sprague Dawley rats (5 males and 7 females) of the same age and, through a novel high resolution artificial vision contactless approach, we evaluated in-situ cardiac kinematic. The hearts were paced on the right atria appendage via cathodal stimuli at rising frequency. RESULTS Kinematic data obtained at rising pacing rates are different between male and female rat hearts: male tended to maintain the same level of cardiac force, energy and contractility, while female responded with an increment of such parameters at increasing heart rate. Female hearts preserved their pattern of contraction and epicardial torsion (vorticity) at rising pacing rates compared to male. Furthermore, we observed a difference in the mechanical restitution: systolic time vs. diastolic time, as an index of cardiac performance, reached higher value in male compared to female hearts. CONCLUSION Our innovative technology was capable to evaluate in-situ rat epicardial kinematic at high stimulation frequency, revealing that male preserved kinematic parameters but varying the pattern of contraction/relaxation. On the contrary, female preserved the pattern of contraction/relaxation increasing kinematic parameters.
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Affiliation(s)
- Francesco Paolo Lo Muzio
- Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona Via S. Francesco 22, 37129, Verona, Italy; Department of Medicine and Surgery, University di Parma, via Gramsci 14, 43126, Parma, Italy
| | - Giacomo Rozzi
- Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona Via S. Francesco 22, 37129, Verona, Italy; Department of Medicine and Surgery, University di Parma, via Gramsci 14, 43126, Parma, Italy
| | - Stefano Rossi
- Department of Medicine and Surgery, University di Parma, via Gramsci 14, 43126, Parma, Italy
| | | | - Lorenzo Fassina
- Department of Industrial Engineering and Informatics, University of Pavia, Via Ferrata 1, 27100, Pavia, Italy
| | - Giovanna Pelà
- Department of Medicine and Surgery, University di Parma, via Gramsci 14, 43126, Parma, Italy
| | - Giovanni Battista Luciani
- Department of Surgery, Dentistry, Paediatrics and Gynaecology, University of Verona Via S. Francesco 22, 37129, Verona, Italy
| | - Michele Miragoli
- Department of Medicine and Surgery, University di Parma, via Gramsci 14, 43126, Parma, Italy; Humanitas Clinical and Research Center, Via Manzoni 56, 20089, Rozzano, Italy.
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Sex Differences in Age-Associated Type 2 Diabetes in Rats-Role of Estrogens and Oxidative Stress. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6734836. [PMID: 31089412 PMCID: PMC6476064 DOI: 10.1155/2019/6734836] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Revised: 12/14/2018] [Accepted: 02/13/2019] [Indexed: 12/27/2022]
Abstract
Females live longer than males, and the estrogens are one of the reasons for this difference. We reported some years ago that estrogens are able to protect rats against oxidative stress, by inducing antioxidant genes. Type 2 diabetes is an age-associated disease in which oxidative stress is involved, and moreover, some studies show that the prevalence is higher in men than in women, and therefore there are sex-associated differences. Thus, the aim of this study was to evaluate the role of estrogens in protecting against oxidative stress in type 2 diabetic males and females. For this purpose, we used Goto-Kakizaki rats, which develop type 2 diabetes with age. We found that female diabetic rats showed lower glycaemia levels with age than did diabetic males and that estrogens enhanced insulin sensitivity in diabetic females. Moreover, glucose uptake, measured by positron emission tomography, was higher in the female brain, cerebellum, and heart than in those from male diabetic rats. There were also sex-associated differences in the plasma metabolic profile as determined by metabolomics. The metabolic profile was similar between estrogen-replaced and control diabetic rats and different from ovariectomized diabetic rats. Oxidative stress is involved in these differences. We showed that hepatic mitochondria from females produced less hydrogen peroxide levels and exhibited lower xanthine oxidase activity. We also found that hepatic mitochondrial glutathione oxidation and lipid oxidation levels were lower in diabetic females when compared with diabetic males. Ovariectomy induced oxidative stress, and estrogen replacement therapy prevented it. These findings provide evidence for estrogen beneficial effects in type 2 diabetes and should be considered when prescribing estrogen replacement therapy to menopausal women.
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Du L, Chen E, Wu T, Ruan Y, Wu S. Resveratrol attenuates hydrogen peroxide-induced aging through upregulation of autophagy in human umbilical vein endothelial cells. Drug Des Devel Ther 2019; 13:747-755. [PMID: 30863014 PMCID: PMC6391141 DOI: 10.2147/dddt.s179894] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
PURPOSE Resveratrol (RESV; trans-3,5,4'-trihydroxystilbene) has emerged as a potential new therapeutic for age-related atherosclerotic diseases. However, the effect of RESV on cellular aging and its underlying mechanisms remain unknown. Therefore, the aim of this study was to examine whether RESV can delay cellular aging through upregulation of autophagy. MATERIALS AND METHODS Human umbilical endothelial vein cells (HUVECs) were divided into four groups: the control group, and the hydrogen peroxide (H2O2) alone, H2O2 + RESV pretreatment, and H2O2 + 3-methyladenine (3-MA) + RESV pretreatment intervention groups. The cell viability was evaluated by a cell counting kit-8 assay. Superoxide dismutase (SOD) activity and intracellular reactive oxygen species (ROS) levels were tested using commercial kits. Senescence-related β-galactosidase activities were detected by immunohistochemical staining. The expression levels of aging-related and autophagy-related markers, including phosphorylated Rb (p-Rb), LC3, and p62, with or without RESV were measured by Western blotting. RESULTS Pretreatment with 10 µM RESV increased the cell viability and SOD levels. The remarkably higher positive rate of senescence-associated β-galactosidase and increased intracellular ROS levels in the H2O2 treatment group were reversed by treatment with 10 µM RESV. As compared to the H2O2 treatment group, 10 µM RESV could upregulate autophagy through the regulation of p-Rb, LC3, and p62 levels. The anti-aging effect of RESV via an autophagy regulation mechanism was further confirmed by the suppression of these effects with 3-MA treatment. CONCLUSION RESV may reverse and delay the aging process of HUVECs via upregulation of autophagy and could be a candidate therapeutic for age-related atherosclerotic diseases.
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Affiliation(s)
- Ligen Du
- Department of Geriatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China, ;
- Department of Cardiology, The Second People's Hospital of Longgang District, Shenzhen, Guangdong, China
- Department of Cardiology, Longgang District People's Hospital of Shenzhen, Guangdong, China
| | - Enping Chen
- Department of Cardiology, The Second People's Hospital of Longgang District, Shenzhen, Guangdong, China
| | - Ting Wu
- Guangdong Provincial Key Laboratory of New Drug Screening, School of Pharmaceutical Sciences, Southern Medical University, Guangzhou, Guangdong, China
| | - Yunjun Ruan
- Department of Geriatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China, ;
| | - Saizhu Wu
- Department of Geriatrics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China, ;
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10
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Lin TC, Wang KH, Kao AP, Chuang KH, Kuo TC. Pueraria mirifica inhibits 17β-estradiol-induced cell proliferation of human endometrial mesenchymal stem cells. Taiwan J Obstet Gynecol 2018; 56:765-769. [PMID: 29241917 DOI: 10.1016/j.tjog.2017.10.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/10/2017] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVE The notion that the human endometrium may contain a population of stem cells has recently been proposed. The mesenchymal stem cells (MSCs) in the endometrium are believed to be responsible for the remarkable regenerative ability of endometrial cells. Estrogens influence the physiological and pathological processes of several hormone-dependent tissues, such as the endometrium. Pueraria mirifica (PM) is a herbal plant that contains several phytoestrogens, including isoflavones, lignans, and coumestans, and is known to exert an estrogenic effect on animal models. The present study investigated the effects of PM on the proliferation of human endometrial MSCs (hEN-MSCs). MATERIALS AND METHODS The hEN-MSCs were isolated from human endometrial tissue. The surface markers of these hEN-MSCs were identified through reverse transcription-polymerase chain reaction analysis. The proliferation potential of hEN-MSCs was measured through a cell proliferation assay. Multilineage differentiation ability was confirmed through Oil red O and von Kossa staining. RESULTS This study demonstrated that 17β-estradiol-responsive MSCs with Oct-4, CD90, and CD105 gene expression can be derived from the human endometrium and that PM exerts biological effects on hEN-MSCs, specifically, enhanced cell growth rate, through the estrogen receptor. Furthermore, PM at 1500 and 2000 μg/mL significantly increased cell proliferation compared with the vehicle control, and PM concentration at 1000 μg/mL significantly inhibited the enhanced cell growth rate induced by 17β-estradiol in hEN-MSCs. CONCLUSION This study provides new insights into the possible biological effects of PM on the proliferation of hEN-MSCs.
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Affiliation(s)
- Ta-Chin Lin
- Department of Obstetrics and Gynecology, Kuo General Hospital, Tainan, Taiwan; Center for Reproductive Medicine, Kuo General Hospital, Tainan, Taiwan
| | - Kai-Hung Wang
- Department of Obstetrics and Gynecology, Kuo General Hospital, Tainan, Taiwan; Center for Reproductive Medicine, Kuo General Hospital, Tainan, Taiwan; Department of Laboratory Medicine, Kuo General Hospital, Tainan, Taiwan.
| | - An-Pei Kao
- Stemforce Biotechnology Co., Ltd, Chiayi, Taiwan
| | - Kuo-Hsiang Chuang
- Graduate Institute of Pharmacognosy, Taipei Medical University, Taipei, Taiwan
| | - Tsung-Cheng Kuo
- Department of Obstetrics and Gynecology, Kuo General Hospital, Tainan, Taiwan; Center for Reproductive Medicine, Kuo General Hospital, Tainan, Taiwan
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11
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Rademaker MT, Richards AM. Urocortins: Actions in health and heart failure. Clin Chim Acta 2017; 474:76-87. [DOI: 10.1016/j.cca.2017.09.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 09/04/2017] [Indexed: 01/21/2023]
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12
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Hu XQ, Dasgupta C, Chen M, Xiao D, Huang X, Han L, Yang S, Xu Z, Zhang L. Pregnancy Reprograms Large-Conductance Ca 2+-Activated K + Channel in Uterine Arteries: Roles of Ten-Eleven Translocation Methylcytosine Dioxygenase 1-Mediated Active Demethylation. Hypertension 2017; 69:1181-1191. [PMID: 28396535 DOI: 10.1161/hypertensionaha.117.09059] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/03/2017] [Accepted: 03/07/2017] [Indexed: 12/15/2022]
Abstract
The large-conductance Ca2+-activated K+ (BKCa) channel is of critical importance in pregnancy-mediated increase in uterine artery vasodilation and blood flow. The present study tested the hypothesis that active DNA demethylation plays a key role in pregnancy-induced reprogramming and upregulation of BKCa channel β1 subunit (BKβ1) in uterine arteries. Uterine arteries were isolated from nonpregnant and near-term pregnant sheep. Pregnancy significantly increased the expression of ten-eleven translocation methylcytosine dioxygenase 1 (TET1) in uterine arteries. A half-palindromic estrogen response element was identified at the TET1 promoter, and estrogen treatment increased TET1 promoter activity and TET1 expression in uterine arteries. In accordance, pregnancy and steroid hormone treatment resulted in demethylation of BKβ1 promoter by increasing 5-hydroxymethylcytosine and decreasing 5-methylcytosine at the CpG in the Sp1-380 binding site that is of critical importance in the regulation of the promoter activity and BKβ1 expression. Inhibition of TET1 with fumarate significantly decreased BKβ1 expression in uterine arteries of pregnant animals and blocked steroid hormone-induced upregulation of BKβ1. Functionally, fumarate treatment inhibited pregnancy and steroid hormone-induced increases in BKCa channel current density and BKCa channel-mediated relaxations. In addition, fumarate blocked pregnancy and steroid hormone-induced decrease in pressure-dependent myogenic tone of the uterine artery. The results demonstrate a novel mechanism of estrogen-mediated active DNA demethylation in reprogramming of BKCa channel expression and function in the adaption of uterine circulation during pregnancy.
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Affiliation(s)
- Xiang-Qun Hu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Chiranjib Dasgupta
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Man Chen
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Daliao Xiao
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Xiaohui Huang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Limin Han
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Shumei Yang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Zhice Xu
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.)
| | - Lubo Zhang
- Institute for Fetology, First Hospital of Soochow University, Suzhou, China (X.-Q.H., Z.X., L.Z.); Lawrence D. Longo MD Center for Perinatal Biology, Department of Basic Sciences, Loma Linda University School of Medicine, CA (X.-Q.H., C.D., D.X., X.H., Z.X., L.Z.); Department of Chemistry and Biochemistry, California State University, San Bernardino (S.Y.).
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13
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Sivasinprasasn S, Shinlapawittayatorn K, Chattipakorn SC, Chattipakorn N. Estrogenic Impact on Cardiac Ischemic/Reperfusion Injury. J Cardiovasc Transl Res 2016; 9:23-39. [PMID: 26786980 DOI: 10.1007/s12265-016-9675-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Accepted: 01/07/2016] [Indexed: 11/29/2022]
Abstract
The increase in cardiovascular disease and metabolic syndrome incidence following the onset of menopause has highlighted the role of estrogen as a cardiometabolic protective agent. Specifically regarding the heart, estrogen induced an improvement in cardiac function, preserved calcium homeostasis, and inhibited the mitochondrial apoptotic pathway. The beneficial effects of estrogen in relation to cardiac ischemia/reperfusion (I/R) injury, such as reduced infarction and ameliorated post-ischemic recovery, have also been shown. Nevertheless, controversial findings exist and estrogen therapy is reported to be related to a higher rate of thromboembolic events and atrial fibrillation in post-menopausal women. Therefore, greater clarification is needed to evaluate the exact potential of estrogen use in cases of cardiac I/R injury. This article reviews the effects of estrogen, in both acute and chronic treatment, and collates the studies with regard to their in vivo, in vitro, or clinical trial settings in cases of cardiac I/R injury and myocardial infarction.
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Affiliation(s)
- Sivaporn Sivasinprasasn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.,Cardiac Electrophysiology unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,School of Medicine, Mae Fah Luang University, Chiang Rai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Krekwit Shinlapawittayatorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.,Cardiac Electrophysiology unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Siriporn C Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand.,Department of Oral Biology and Diagnostic Science, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand
| | - Nipon Chattipakorn
- Cardiac Electrophysiology Research and Training Center, Faculty of Medicine, Chiang Mai University, Chiang Mai, 50200, Thailand. .,Cardiac Electrophysiology unit, Department of Physiology, Faculty of Medicine, Chiang Mai University, Chiang Mai, Thailand. .,Center of Excellence in Cardiac Electrophysiology Research, Chiang Mai University, Chiang Mai, Thailand.
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14
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Luo T, Kim JK. The Role of Estrogen and Estrogen Receptors on Cardiomyocytes: An Overview. Can J Cardiol 2015; 32:1017-25. [PMID: 26860777 DOI: 10.1016/j.cjca.2015.10.021] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 10/27/2015] [Accepted: 10/27/2015] [Indexed: 01/07/2023] Open
Abstract
Sex differences in the onset and manifestation of cardiovascular diseases are well known, yet the mechanism behind this discrepancy remains obscure. Estrogen and its corresponding receptors have been studied for their positive salutary effects in women for decades. Estrogen protects the heart from various forms of stress, including cytotoxic, ischemic, and hypertrophic stimuli. The postulated underlying mechanism is complex, and involves the actions of the hormone on the endothelium and myocardium. Although the effects of estrogen on the coronary endothelium are well-described, delineation of the hormone's action on cardiomyocytes is still evolving. The focus of this article is to review the accumulated literature and latest data on the role of estrogen and its receptors on cardiomyocytes, the contractile cellular units of the myocardium.
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Affiliation(s)
- Tao Luo
- University of California Irvine, School of Medicine, Irvine, California, USA
| | - Jin Kyung Kim
- University of California Irvine, School of Medicine, Irvine, California, USA.
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15
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Li J, Peng X, Zeng X, Liu B, Hao Q, Yu X, Zhu L, Hu Q. Estrogen Secreted by Mesenchymal Stem Cells Necessarily Determines Their Feasibility of Therapeutical Application. Sci Rep 2015; 5:15286. [PMID: 26478095 PMCID: PMC5389885 DOI: 10.1038/srep15286] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Accepted: 09/22/2015] [Indexed: 12/13/2022] Open
Abstract
Mesenchymal stem cells are therapeutically applicable and involved in the development of some types of diseases including estrogen (E2)-related ones. Little is known about E2 secretion by mesenchymal stem cells and its potential influence on their therapeutical applications. Our in vitro experiments showed that BMSCs cultured from C57BL/6J mice secreted E2 in a time-dependent manner. In vivo study identified a significantly increased E2 level in serum after a single administration of BMSCs, and a sustained elevation of E2 level upon a repetitive administration. Morris water maze test in the ovariectomised (OVX) mouse model revealed BMSCs transplantation ameliorated OVX-induced memory deficits by secreted E2. On the contrary, in endometriosis model, BMSCs transplantation aggravated endometriotic lesions because of E2 secretion. Mechanistically, the aromatase cytochrome P450 appeared to be critical for the biosynthesis and exerted effects of estrogen secretion by BMSCs. Our findings suggested that BMSCs transplantation is on the one hand an attractive option for the therapeutic treatment of diseases associated with E2 deficits in part through E2 secretion, on the other hand a detrimental factor for the E2-exasperated diseases largely via E2 production. It is important and necessary to monitor serum E2 level before and after the initiation of BMSCs therapy.
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Affiliation(s)
- Jiansha Li
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine.,Department of Pathology, Tongji Hospital; Tongji Medical College, Huazhong University of Science and Technology (HUST), Wuhan 430030, People's Republic of China
| | - Xiaochun Peng
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine
| | - Xianqin Zeng
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine
| | - Bingxun Liu
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine
| | - Qiang Hao
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine
| | - Xiangyuan Yu
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine
| | - Liping Zhu
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine
| | - Qinghua Hu
- Key Laboratory of Pulmonary Diseases of Ministry of Health and Department of Pathophysiology, School of Basic Medicine
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16
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Aberrant hypermethylation of aldehyde dehydrogenase 2 promoter upstream sequence in rats with experimental myocardial infarction. BIOMED RESEARCH INTERNATIONAL 2015; 2015:503692. [PMID: 25629048 PMCID: PMC4299765 DOI: 10.1155/2015/503692] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 11/13/2014] [Accepted: 11/20/2014] [Indexed: 12/31/2022]
Abstract
Background. Aldehyde dehydrogenase 2 (ALDH2) plays a crucial role in myocardial protection against ischemia. Downregulation of ALDH2 was evidenced after myocardial infarction and the underlying mechanism is not fully understood. DNA methylation can regulate gene transcription in epigenetic level. We thus hypothesized that DNA methylation may affect ALDH2 expression in myocardial infarction (MI). Methods. MI was induced in Sprague-Dawley rats. MI border zone tissues were harvested at 1st week, 2nd week, and 3rd week after MI. Bisulfite sequencing PCR (BSP) was performed to detect the methylation levels of ALDH2 core promoter. Sequenom MassARRAY platform (MassARRAY) was used to examine the methylation levels of ALDH2 promoter upstream sequence. ALDH2 protein and mRNA expression were assayed by Western blot and real-time PCR, respectively. Results. Compared with Sham group, ALDH2 protein and mRNA expression of MI groups was significantly downregulated. Compared with Sham group, DNA methylation level of CpG sites in ALDH2 promoter upstream sequence was significantly higher in MI groups in a time-dependent manner (CpG1, CpG2, and CpG7, P < 0.01). DNA methylation did not affect ALDH2 core promoter sequence during the progress of MI. No significant difference was detected in DNA methylation level of ALDH2 promoter upstream sequence among MI groups. Conclusion. Aberrant hypermethylation of CpG sites in ALDH2 promoter upstream sequence is associated with myocardial ischemia injury and may partly result in ALDH2 downregulation after MI.
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17
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Tang Z, Wang Y, Zhu X, Ni X, Cong B, Lu J. Reduced expression of CRHR2 and Sp-1 in myocardium of ovariectomized rats is improved by exercise training. Gynecol Endocrinol 2015; 31:742-6. [PMID: 26182188 DOI: 10.3109/09513590.2015.1056729] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
Exercise training has been looked on as a non-pharmacologic approach to treating ovariectomy (OVX)-induced dysfunctions. In this study, we investigated whether chronic exercise impacts on expression of urocortins (UCNs) and corticotropin-releasing hormone receptor type 2 (CRHR2) in myocardium of OVX rats. Bilateral OVX or sham-operation was performed under anesthesia. Both groups were then divided into two subgroups, with or without treadmill training for 8 weeks. It was found that OVX as well as exercise did not affect the mRNA levels of UCN, UCN2 and UCN3 in myocardium. OVX caused down-regulation of CRHR2 in myocardium. Exercise training reversed the OVX-induced reduction of CRHR2, but had no influence on CRHR2 level in sham rats. OVX resulted in a decrease in estrogen receptor α (ERα) expression in myocardium, which was restored by exercise. Moreover, exercise training also reversed OVX-induced down-regulation of specific protein-1 (Sp-1) expression in myocardium. CRHR2 expression level correlated with Sp-1 and ERα level in myocardium. These results indicate that exercise training can restore the CRHR2 level in myocardium of OVX rats, which is associated with ERα and Sp-1 expression.
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Affiliation(s)
- Zhiping Tang
- a School of Kinesiology, Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport , Shanghai , China and
| | - Yujun Wang
- a School of Kinesiology, Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport , Shanghai , China and
| | - Xiaoyan Zhu
- b Department of Physiology , Second Military Medical University , Shanghai , China
| | - Xin Ni
- b Department of Physiology , Second Military Medical University , Shanghai , China
| | - Binhai Cong
- b Department of Physiology , Second Military Medical University , Shanghai , China
| | - Jianqiang Lu
- a School of Kinesiology, Key Laboratory of Exercise and Health Sciences of Ministry of Education, Shanghai University of Sport , Shanghai , China and
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18
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Estrogen enhancement of SGK1 expression induced by urocortin contributes to its cardioprotection against ischemia/reperfusion insult. Int J Cardiol 2015; 178:200-2. [DOI: 10.1016/j.ijcard.2014.10.113] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Accepted: 10/21/2014] [Indexed: 11/18/2022]
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19
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The Effects and Mechanism of miR-92a and miR-126 on Myocardial Apoptosis in Mouse Ischemia-Reperfusion Model. Cell Biochem Biophys 2014; 70:1901-6. [DOI: 10.1007/s12013-014-0149-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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17β-estradiol mediates upregulation of stromal cell-derived factor-1 in the retina through activation of estrogen receptor in an ischemia-reperfusion injury model. Graefes Arch Clin Exp Ophthalmol 2014; 253:17-23. [DOI: 10.1007/s00417-014-2657-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2014] [Revised: 04/03/2014] [Accepted: 04/25/2014] [Indexed: 10/25/2022] Open
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21
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Cong B, Ni X. Estrogen up-regulates CRHR2 expression via demethylation of CRHR2 gene promoter in cardiomyocytes. Int J Cardiol 2014; 172:496-7. [PMID: 24485608 DOI: 10.1016/j.ijcard.2014.01.017] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 12/31/2013] [Accepted: 01/07/2014] [Indexed: 11/29/2022]
Affiliation(s)
- Binhai Cong
- Department of Physiology, Second Military Medical University, Shanghai 200433, China
| | - Xin Ni
- Department of Physiology, Second Military Medical University, Shanghai 200433, China.
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