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An S, Wang X, Shi H, Zhang X, Meng H, Li W, Chen D, Ge J. Apelin protects against ischemia-reperfusion injury in diabetic myocardium via inhibiting apoptosis and oxidative stress through PI3K and p38-MAPK signaling pathways. Aging (Albany NY) 2020; 12:25120-25137. [PMID: 33342766 PMCID: PMC7803490 DOI: 10.18632/aging.104106] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/19/2020] [Indexed: 12/12/2022]
Abstract
Among all diabetes mellitus-associated cardiovascular diseases, morbidity of diabetic myocardium with ischemia reperfusion injury (D-IRI) is increasing year by year. We aimed to discover a therapeutic biomarker and investigate its mechanism in D-IRI. High-fat diet and streptozotocin-induced diabetes rats were operated with IRI or sham. Recombined lentiviral vector encoding Apelin was injected into D-IRI rat via tail vein. Cardiac function, infarct size, cellular death and oxidative stress were major outcome measures. Cardiomyocyte ischemia reperfusion injury was more serious in D-IRI rats than in non-diabetes ischemia reperfusion injury (ND-IRI) rats. The secretion of NTproBNP was increased in D-IRI compared with ND-IRI. Bcl-2 expression was decreased, and Bax and cleaved caspase-3 expression was increased in D-IRI rats compared with ND-IRI rats, which were reversed after treatment with Apelin. Apelin-upregulation improved cardiomyocyte ischemia reperfusion injury and decreased NT-proBNP levels in D-IRI rats. Apelin overexpression enhanced PI3K and eNOS levels while reduced those of p38-MAPK and iNOS in D-IRI rats. Apelin overexpression protected against D-IRI through inhibiting apoptosis and oxidative stress via PI3K and p38MAPK signaling pathways in D-IRI rats. These findings provide critical new insight into understanding of Apelin's cardio-protective effects, which may become a novel therapeutic target for the diabetic IRI patients.
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Affiliation(s)
- Songtao An
- Department of Cardiology, Henan Province People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Xi Wang
- Department of Cardiology, Henan Province People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Huairui Shi
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Xueqiang Zhang
- Department of Cardiology, Hongxing Hospital, Hami 839000, Xinjiang, China
| | - Hua Meng
- Department of Cardiology, Henan Province People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Wenbo Li
- Department of Cardiology, Henan Province People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Dongchang Chen
- Department of Cardiology, Henan Province People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou 450003, Henan, China
| | - Junbo Ge
- Department of Cardiology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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Deng B, Wang JX, Hu XX, Duan P, Wang L, Li Y, Zhu QL. Nkx2.5 enhances the efficacy of mesenchymal stem cells transplantation in treatment heart failure in rats. Life Sci 2017. [PMID: 28624390 DOI: 10.1016/j.lfs.2017.06.014] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
AIMS The aim of this study is to determine whether Nkx2.5 transfection of transplanted bone marrow mesenchymal stem cells (MSCs) improves the efficacy of treatment of adriamycin-induced heart failure in a rat model. MAIN METHODS Nkx2.5 was transfected in MSCs by lentiviral vector transduction. The expressions of Nkx2.5 and cardiac specific genes in MSCs and Nkx2.5 transfected mesenchymal stem cells (MSCs-Nkx2.5) were analyzed with quantitative real-time PCR and Western blot in vitro. Heart failure models of rats were induced by adriamycin and were then randomly divided into 3 groups: injected saline, MSCs or MSCs-Nkx2.5 via the femoral vein respectively. Four weeks after injection, the cardiac function, expressions of cardiac specific gene, fibrosis formation and collagen volume fraction in the myocardium as well as the expressions of GATA4 and MEF2 in rats were analyzed with echocardiography, immunohistochemistry, Masson staining, quantitative real-time PCR and Western blot, respectively. KEY FINDINGS Nkx2.5 enhanced cardiac specific gene expressions including α-MHC, TNI, CKMB, connexin-43 in MSCs-Nkx2.5 in vitro. Both MSCs and MSCs-Nkx2.5 improved cardiac function, promoted the differentiation of transplanted MSCs into cardiomyocyte-like cells, decreased fibrosis formation and collagen volume fraction in the myocardium, as well as increased the expressions of GATA4 and MEF2 in adriamycin-induced rat heart failure models. Moreover, the effect was much more remarkable in MSCs-Nkx2.5 than in MSCs group. SIGNIFICANCE This study has found that Nkx2.5 enhances the efficacy of MSCs transplantation in treatment adriamycin-induced heart failure in rats. Nkx2.5 transfected to transplanted MSCs provides a potential effective approach to heart failure.
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Affiliation(s)
- Bo Deng
- Department of Cardiology, Chinese PLA General Hospital, 28, Fuxing Road, Beijing 100853, China
| | - Jin Xin Wang
- Department of Cardiology, Chinese PLA General Hospital, 28, Fuxing Road, Beijing 100853, China
| | - Xing Xing Hu
- Department of Cardiology, Chinese PLA General Hospital, 28, Fuxing Road, Beijing 100853, China
| | - Peng Duan
- Department of Cardiology, Chinese PLA General Hospital, 28, Fuxing Road, Beijing 100853, China
| | - Lin Wang
- Department of Cardiology, Chinese PLA General Hospital, 28, Fuxing Road, Beijing 100853, China
| | - Yang Li
- Department of Cardiology, Chinese PLA General Hospital, 28, Fuxing Road, Beijing 100853, China
| | - Qing Lei Zhu
- Department of Cardiology, Chinese PLA General Hospital, 28, Fuxing Road, Beijing 100853, China.
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Virzì GM, Milan Manani S, Brocca A, Cantaluppi V, de Cal M, Pastori S, Tantillo I, Zambon R, Crepaldi C, Ronco C. Peritoneal Cell-free DNA: an innovative method for determining acute cell damage in peritoneal membrane and for monitoring the recovery process after peritonitis. J Nephrol 2015; 29:111-8. [DOI: 10.1007/s40620-015-0212-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Accepted: 05/18/2015] [Indexed: 02/07/2023]
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Hsieh YP, Huang CH, Lee CY, Lin CY, Chang CC. Silencing of hepcidin enforces the apoptosis in iron-induced human cardiomyocytes. J Occup Med Toxicol 2014; 9:11. [PMID: 24641804 PMCID: PMC3995429 DOI: 10.1186/1745-6673-9-11] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2013] [Accepted: 03/10/2014] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Iron is essential not only for erythropoisis but also for several bioenergetics' processes in myocardium. Hepcidin is a well-known regulator of iron homeostasis. Recently, researchers identified low hepcidin was independently associated with increased 3-year mortality among systolic heart failure patients. In addition, our previous in vivo study revealed that the left ventricular mass index increased in chronic kidney disease patients with lower serum hepcidin. We hypothesize that hepcidin interacts with the apoptotic pathway of cardiomyocytes during oxidative stress conditions. METHODS To test this hypothesis, human cardiomyocytes were cultured and treated with ferrous iron. The possible underlying signaling pathways of cardiotoxicity were examined following knockdown studies using siRNAs of hepcidin (siRNA1 was used as a negative control and siRNA2 was used to silence hepcidin). RESULTS We found that ferrous iron induces apoptosis in human cardiomyocytes in a dose-dependent manner. This iron-induced apoptosis was linked to enhanced caspase 8, reduced Bcl-2, Bcl-xL, phosphorylated Akt and GATA-4. Hepcidin levels increased in human cardiomyocytes pretreated with ferrous iron and returned to non-iron treated levels following siRNA2 transfection. In iron pretreated cardiomyocytes, the siRNA2 transfection further increased caspase 8 expression and decreased the expression of GATA-4, Bcl-2, Bcl-xL and phosphorylated Akt than iron pretreatment alone, but caspase 9 levels remained unchanged. CONCLUSIONS Our findings suggest that hepcidin can rescue human cardiomyocytes from iron-induced apoptosis through the regulation of GATA-4/Bcl-2 and the extrinsic apoptotic pathway.
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Affiliation(s)
- Yao-Peng Hsieh
- Division of Nephrology, Department of Internal Medicine, Changhua Christian Hospital, 135 Nanhsiao St., Changhua 500, Taiwan.,Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan
| | - Ching-Hui Huang
- Division of Cardiology, Department of Internal Medicine, Changhua Christian Hospital, Changhua, Taiwan
| | - Chia-Ying Lee
- Division of Pediatric Nephrology, China Medical University Hospital, Changhua, Taiwan
| | - Ching-Yuang Lin
- Clinical Immunological Center, China Medical University Hospital, No. 2, Yuh-Der Road, Taichung, Taiwan.,Graduate Institute of Clinical Medical Science, College of Medicine, China Medical University, Taichung, Taiwan.,Program for Aging, China Medical University, Taichung, Taiwan
| | - Chia-Chu Chang
- Division of Nephrology, Department of Internal Medicine, Changhua Christian Hospital, 135 Nanhsiao St., Changhua 500, Taiwan.,Program for Aging, China Medical University, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
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Li PC, Yang YC, Hwang GY, Kao LS, Lin CY. Inhibition of reverse-mode sodium-calcium exchanger activity and apoptosis by levosimendan in human cardiomyocyte progenitor cell-derived cardiomyocytes after anoxia and reoxygenation. PLoS One 2014; 9:e85909. [PMID: 24498266 PMCID: PMC3911900 DOI: 10.1371/journal.pone.0085909] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2013] [Accepted: 12/09/2013] [Indexed: 11/19/2022] Open
Abstract
Levosimendan, a known calcium sensitizer with positive inotropic and vasodilating properties, might also be cardioprotective during ischemia-reperfusion (I/R) insult. Its effects on calcium homeostasis and apoptosis in I/R injury remain unclear. Na(+)/Ca(2+) exchanger (NCX) is a critical mediator of calcium homeostasis in cardiomyocytes, with reverse-mode NCX activity responsible for intracellular calcium overload and apoptosis of cardiomyocytes during I/R. We probed effects and underlying mechanisms of levosimendan on apoptosis and NCX activity in cultured human cardiomyocyte progenitor cells (CPC)-derived cardiomyocytes undergoing anoxia-reoxygenation (A/R), simulating I/R in vivo. Administration of levosimendan decreased apoptosis of CPC-derived cardiomyocytes induced by A/R. The increase in reverse-mode NCX activity after A/R was curtailed by levosimendan, and NCX1 was translocated away from the cell membrane. Concomitantly, endoplasmic reticulum (ER) stress response induced by A/R was attenuated in CPC-derived cardiomycytes treated with NCX-targeted siRNA or levosimendan, with no synergistic effect between treatments. Results indicated levosimendan inhibited reverse-mode NCX activity to protect CPC-derived cardiomyocytes from A/R-induced ER stress and cell death.
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Affiliation(s)
- Ping-Chun Li
- Department of Surgery, Division of Cardiovascular Surgery, China Medical University Hospital, Taichung, Taiwan
- Department of Life Science, Tunghai University, Taichung, Taiwan
| | - Ya-Chi Yang
- Department of Life sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Guang-Yuh Hwang
- Department of Life Science, Tunghai University, Taichung, Taiwan
| | - Lung-Sen Kao
- Department of Life sciences and Institute of Genome Sciences, National Yang-Ming University, Taipei, Taiwan
| | - Ching-Yuang Lin
- Clinical Immunology Center, China Medical University Hospital, Taichung, Taiwan
- College of Medicine, China Medical University, Taichung, Taiwan
- * E-mail:
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Lin CY, Lin TY, Lee MC, Chen SC, Chang JS. Hyperglycemia: GDNF-EGR1 pathway target renal epithelial cell migration and apoptosis in diabetic renal embryopathy. PLoS One 2013; 8:e56731. [PMID: 23468876 PMCID: PMC3585314 DOI: 10.1371/journal.pone.0056731] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2012] [Accepted: 01/14/2013] [Indexed: 11/19/2022] Open
Abstract
Maternal hyperglycemia can inhibit morphogenesis of ureteric bud branching, Glial cell line-derived neurotrophilic factor (GDNF) is a key regulator of the initiation of ureteric branching. Early growth response gene-1 (EGR-1) is an immediate early gene. Preliminary study found EGR-1 persistently expressed with GDNF in hyperglycemic environment. To evaluate the potential relationship of hyperglycemia-GDNF-EGR-1 pathway, in vitro human renal proximal tubular epithelial (HRPTE) cells as target and in vivo streptozotocin-induced mice model were used. Our in vivo microarray, real time-PCR and confocal morphological observation confirmed apoptosis in hyperglycemia-induced fetal nephropathy via activation of the GDNF/MAPK/EGR-1 pathway at E12-E15. Detachment between ureteric branch and metanephrons, coupled with decreasing number and collapse of nephrons on Day 1 newborn mice indicate hyperglycemic environment suppress ureteric bud to invade metanephric rudiment. In vitro evidence proved that high glucose suppressed HRPTE cell migration and enhanced GDNF-EGR-1 pathway, inducing HRPTE cell apoptosis. Knockdown of EGR-1 by siRNA negated hyperglycemic suppressed GDNF-induced HRPTE cells. EGR-1 siRNA also reduced GDNF/EGR-1-induced cRaf/MEK/ERK phosphorylation by 80%. Our findings reveal a novel mechanism of GDNF/MAPK/EGR-1 activation playing a critical role in HRPTE cell migration, apoptosis and fetal hyperglycemic nephropathy.
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Affiliation(s)
- Ching-Yuang Lin
- Clinical Immunology Center, China Medical University Hospital, Taichung, Taiwan.
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