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Zhang X, Zhao Y, Guo D, Luo M, Zhang Q, Zhang L, Zhang D. Exercise Improves Heart Function after Myocardial Infarction: The Merits of AMPK. Cardiovasc Drugs Ther 2024:10.1007/s10557-024-07564-2. [PMID: 38436878 DOI: 10.1007/s10557-024-07564-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/20/2024] [Indexed: 03/05/2024]
Abstract
BACKGROUND AMPK is considered an important protein signaling pathway that has been shown to exert prominent cardioprotective effects on the pathophysiological mechanisms of numerous diseases. Following myocardial infarction, severe impairment of cardiac function occurs, leading to complications such as heart failure and arrhythmia. Therefore, protecting the heart and improving cardiac function are important therapeutic goals after myocardial infarction. Currently, there is substantial ongoing research on exercise-centered rehabilitation training, positioning exercise training as a significant nonpharmacological approach for preventing and treating numerous cardiovascular diseases. OBJECTIVE Previous studies have reported that exercise can activate AMPK phosphorylation and upregulate the AMPK signaling pathway to play a cardioprotective role in coronary artery disease, but the specific mechanism involved remains to be elucidated. CONCLUSION This review discusses the role and mechanism of the exercise-mediated AMPK pathway in improving postinfarction cardiac function through existing studies and describes the mechanism of exercise-induced myocardial repair of AMPK from multiple perspectives to formulate a reasonable and optimal exercise rehabilitation program for the prevention and treatment of myocardial infarction patients in the clinic.
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Affiliation(s)
- Xiaodi Zhang
- Department of Cardiovascular Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Yi Zhao
- Department of Cardiovascular Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Dafen Guo
- Outpatient Department Office, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Mingxian Luo
- Department of Cardiovascular Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Qing Zhang
- Department of Cardiovascular Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China
| | - Li Zhang
- Discipline Inspection and Supervision Office of Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China.
| | - Dengshen Zhang
- Department of Cardiovascular Surgery, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, Guizhou, China.
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Jaboticaba (Myrciaria jaboticaba) Attenuates Ventricular Remodeling after Myocardial Infarction in Rats. Antioxidants (Basel) 2022; 11:antiox11020249. [PMID: 35204132 PMCID: PMC8868135 DOI: 10.3390/antiox11020249] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/25/2022] [Accepted: 01/25/2022] [Indexed: 02/04/2023] Open
Abstract
The cardiac remodeling after myocardial infarction is characterized by inflammation and oxidative stress. Thus, this study aimed to test the hypothesis that jaboticaba, due to its anti-inflammatory and antioxidants properties, attenuates cardiac remodeling after myocardial infarction. Wistar rats were submitted to myocardial infarction due to coronary artery occlusion, and divided into four experimental groups: C, sham control animals; I, animals submitted to myocardial infarction, received a standard diet; IJ2, animals submitted to myocardial infarction, received a standard diet plus 2% jaboticaba; and IJ4, animals submitted to myocardial infarction, received a standard diet plus 4% jaboticaba. After a three-month follow-up, echocardiography, histology, oxidative stress, and cardiac energy metabolism were analyzed. There was no difference in infarct size or mortality among the infarcted groups. The IJ4 group displayed improved diastolic function, as assessed by isovolumetric relaxation time normalized to the heart rate. As expected, the percentage of collagen was higher in all infarcted groups than in the C group. However, the IJ2 group had less collagen than groups I and IJ4. The IJ4 group presented lower PFK activity than I and IJ2, and lower pyruvate dehydrogenase activity than controls, whereas the IJ2 group showed no differences compared to the control group in both LDH and ATP synthase activity. The 2% and 4% doses attenuated lipid peroxidation and increased the activity of glutathione peroxidase compared with the I group. In conclusion, jaboticaba attenuated the remodeling process after myocardial infarction, which was associated with decreased oxidative stress and improved energy metabolism.
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Elsheikh AM, M Roshdy T, Hassan SA, A Hussein M, M Fayed A. Resveratrol: A Potential Protector Against Benzo[a]pyrene- Induced Lung Toxicity. Pak J Biol Sci 2022; 25:78-89. [PMID: 35001578 DOI: 10.3923/pjbs.2022.78.89] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
<b>Background and Objective:</b> Benzo[a]pyrene (B[a]P), a major component of lipophilic pollutants then can be translated to diffluent substances. The aim of t he present article was to investigate protective activity of resveratrol against lung toxicity induced by B[a]P. Material and Methods: Male Sprague-Dawley rats were randomly assigned to 6 groups (6 animals/group): 3 negative control groups, control positive, B[a]P (20 mg kg<sup></sup><sup>1</sup> b.wt., resveratrol (50 mg kg<sup></sup><sup>1</sup> b.wt.)-B[a]P and vitamin C (1 g kg<sup></sup><sup>1</sup> b.wt.)-B[a]P groups. <b>Results:</b> The daily oral administration of the resveratrol (50 mg kg<sup></sup><sup>1</sup> b.wt.) and vitamin C (1 g kg<sup></sup><sup>1</sup> b.wt.) for 30 days to rats treated with B[a]P (20 mg kg<sup></sup><sup>1</sup> b.wt.) resulted in a significant improve plasma cholesterol, triglyceride and HDL-C as well as serum TNF-α, TBARS, IL-2,IL-6, haptoglobin, histamine, IgA, Ig E,Ig G and Ig M in B[a]P treated rats. On the other hand oral administration of resveratrol elevated the SOD, GPx and GR gene expression in lung rats treated with B[a]P. Furthermore, resveratrol and vitamin C nearly normalized these effects in lung histoarchitecture. <b>Conclusion:</b> The obtained biochemical, molecular biology and histological results of this study proved the lung protective activity of resveratrol against B[a]P induced lung toxicity in rats.
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Comparative and Combinatorial Effects of Resveratrol and Sacubitril/Valsartan alongside Valsartan on Cardiac Remodeling and Dysfunction in MI-Induced Rats. Molecules 2021; 26:molecules26165006. [PMID: 34443591 PMCID: PMC8401506 DOI: 10.3390/molecules26165006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 08/05/2021] [Accepted: 08/09/2021] [Indexed: 12/11/2022] Open
Abstract
The development and progression of heart failure (HF) due to myocardial infarction (MI) is a major concern even with current optimal therapy. Resveratrol is a plant polyphenol with cardioprotective properties. Sacubitril/valsartan is known to be beneficial in chronic HF patients. In this study, we investigated the comparative and combinatorial benefits of resveratrol with sacubitril/valsartan alongside an active comparator valsartan in MI-induced male Sprague Dawley rats. MI-induced and sham-operated animals received vehicle, resveratrol, sacubitril/valsartan, valsartan alone or sacubitril/valsartan + resveratrol for 8 weeks. Echocardiography was performed at the endpoint to assess cardiac structure and function. Cardiac oxidative stress, inflammation, fibrosis, brain natriuretic peptide (BNP), creatinine and neutrophil gelatinase associated lipocalin were measured. Treatment with resveratrol, sacubitril/valsartan, valsartan and sacubitril/valsartan + resveratrol significantly prevented left ventricular (LV) dilatation and improved LV ejection fraction in MI-induced rats. All treatments also significantly reduced myocardial tissue oxidative stress, inflammation and fibrosis, as well as BNP. Treatment with the combination of sacubitril/valsartan and resveratrol did not show additive effects. In conclusion, resveratrol, sacubitril/valsartan, and valsartan significantly prevented cardiac remodeling and dysfunction in MI-induced rats. The reduction in cardiac remodeling and dysfunction in MI-induced rats was mediated by a reduction in cardiac oxidative stress, inflammation and fibrosis.
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Xu Z, Zheng S, Feng X, Cai C, Ye X, Liu P. Klotho gene improves oxidative stress injury after myocardial infarction. Exp Ther Med 2020; 21:52. [PMID: 33273980 PMCID: PMC7706392 DOI: 10.3892/etm.2020.9484] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 04/07/2020] [Indexed: 11/17/2022] Open
Abstract
The aim of the present study was to investigate the effects and mechanisms of the Klotho gene in oxidative stress injury after myocardial infarction. Sprague-Dawley rats were divided into five groups (sham, model, pDC316, LY294002, and pDC316-Klotho). Subsequently, the superoxide dismutase (SOD), glutathione (GSH), and malondialdehyde (MDA) concentrations were measured in myocardial tissues. Additionally, pathological differences among the groups were evaluated using hematoxylin and eosin and Masson's trichrome staining. Apoptosis was assayed by terminal deoxynucleotidyl transferase 2'-deoxyuridine-5'-triphosphate nick end-labeling assay, evaluated Klotho protein expression by immunohistochemical assay, and assessed Nrf 2 and ARE protein expressions using western blotting assay. As compared with in the sham group, the SOD, MDA, and GSH concentrations were significantly deteriorated (P<0.001, respectively); cardiomyocyte apoptosis index values were significantly increased (P<0.001); Klotho protein expression was significantly depressed; and Nrf-2 and ARE protein expressions were significantly (P<0.001, respectively) in the model and pDC316 groups. However, with Klotho supplementation by pDC316 transfection, as compared with in the model group, the SOD, MDA, and GSH concentrations were significantly improved (P<0.001, respectively); the cardiomyocyte apoptosis index values were significantly suppressed (P<0.001); and the pathology was improved. Further, the Klotho protein expression of the pDC316-Klotho group was significantly upregulated and the Nrf-2 and ARE proteins expressions of the LY294002 and pDC316-Klotho groups were significantly suppressed. Klotho overexpression improved findings of oxidative stress injury after myocardial infarction.
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Affiliation(s)
- Zhuofan Xu
- Department of Internal Medicine-Cardiovascular, Guangzhou 12th People's Hospital, Guangzhou, Guangdong 510620, P.R. China
| | - Shaoxin Zheng
- Department of Internal Medicine-Cardiovascular, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, Guangdong 510200, P.R. China
| | - Xiaoqian Feng
- Department of Internal Medicine-Cardiovascular, Guangzhou 12th People's Hospital, Guangzhou, Guangdong 510620, P.R. China
| | - Chengzhe Cai
- Department of Internal Medicine-Cardiovascular, Guangzhou 12th People's Hospital, Guangzhou, Guangdong 510620, P.R. China
| | - Xianqu Ye
- Department of Internal Medicine-Cardiovascular, Guangzhou 12th People's Hospital, Guangzhou, Guangdong 510620, P.R. China
| | - Pingfang Liu
- Department of Internal Medicine-Cardiovascular, Guangzhou 12th People's Hospital, Guangzhou, Guangdong 510620, P.R. China
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Sun GZ, Meng FJ, Cai HQ, Diao XB, Zhang B, Bai XP. Ginsenoside Rg3 protects heart against isoproterenol-induced myocardial infarction by activating AMPK mediated autophagy. Cardiovasc Diagn Ther 2020; 10:153-160. [PMID: 32420095 DOI: 10.21037/cdt.2020.01.02] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Background Panax ginseng is a well-known medicinal herb that is widely used in traditional Chinese medicine for treating various diseases. Ginsenoside Rg3 (Rg3) is thought to be one of the most important active ingredients of Panax ginseng. However, the molecular mechanism underlying the beneficial effects of Rg3 has been elusive. Methods In the mouse heart injury model induced by isoproterenol (ISO), we used brain natriuretic peptide (BNP), lactate dehydrogenase (LDH) and caspase-3 ELISA kits to test myocardium injury. To test whether Rg3 protects myocardial injury through AMPK mediated autophagy, we used specific AMPK inhibitor in combination with Rg3. NLRP3 inflammasome related molecules such as NLRP3, ASC and caspase-1 were measured by western-blot following Rg3 treatment. Results We found that Rg3 significantly reduced ISO induced myocardial injury indicated by the downregulation of serum BNP and LDH. In addition, we showed that the improvement of myocardial injury by Rg3 was associated with enhanced expression of autophagy related protein and activation of AMPK downstream signaling pathway. Conclusions We observed that inhibition of AMPK significantly reversed the myocardial protective effect of Rg3, which is associated with a decrease of Rg3 induced autophagy. These together suggested that Rg3 may improve myocardial injury during MI through AMPK mediated autophagy. Our study also provides important translational evidence for using Rg3 in treating myocardial infarction (MI).
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Affiliation(s)
- Gui-Zhi Sun
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Fan-Ji Meng
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Huai-Qiu Cai
- Department of Ultrasonography, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Xue-Bo Diao
- Department of Gynaecology and Obstetrics, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Bo Zhang
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, China
| | - Xiu-Ping Bai
- Department of Cardiology, The Fourth Affiliated Hospital of Harbin Medical University, Harbin 150001, China
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Abstract
Acute myocardial infarction is a major cause of death and disability worldwide. This study was designed to elucidate the effect of resveratrol (RES) in isoproterenol (ISO)-challenged myocardial injury in rats. Male Sprague-Dawley rats were randomly allocated to four groups (10 rats/group): negative, control positive ISO (85 mg/kg), Propranolol/ISO, and RES/ISO. RES (50 mg/kg) improved plasma lactate dehydrogenase, creatine kinase, and cardiac troponin T; brain natriuretic peptide, interleukin-10, vascular endothelial growth factor, and transforming growth factor-β1; as well as cardiac superoxide dismutase, malondialdehyde, and total protein kinase-1 (Akt-1) levels. In addition, RES reduced the expression of cardiac inducible nitric oxide synthase and microRNA-34a, as well as p38 mitogen-activated protein kinase levels compared with positive control group. In conclusion, RES could reduce the degree of MI induced by ISO by improving the antioxidant, antiapoptotic, and anti-inflammatory capacities of the body.
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Affiliation(s)
- Sylvia A Boshra
- Department of Biochemistry, Faculty of Pharmacy, October 6 University, Giza, Egypt
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Hu LL, Zhang KQ, Tian T, Zhang H, Fu Q. Probucol improves erectile function via Activation of Nrf2 and coordinates the HO-1 / DDAH / PPAR-γ/ eNOS pathways in streptozotocin-induced diabetic rats. Biochem Biophys Res Commun 2018; 507:9-14. [PMID: 30454888 DOI: 10.1016/j.bbrc.2018.10.036] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 10/05/2018] [Indexed: 01/20/2023]
Abstract
BACKGROUND Diabetic erectile dysfunction (DMED) is mainly attributed to oxidative stress, and Nrf2 plays an important role in cellular antioxidation and regulates NO production in the vascular endothelium. Probucol maintains endothelial function through its antioxidant activity. This study investigated the efficacy and mechanism of probucol in improving erectile function in streptozotocin-induced diabetic rats. METHODS In our study, thirty 12-week-old Sprague-Dawley male rats were fasted for 12 h. All rats received a 1-time injection of intraperitoneal streptozotocin(60 mg/kg) or vehicle. After 72 h, STZ-treated rats (with random blood glucose concentrations consistently greater than 16.7 mmol/L) were considered diabetic. The diabetic rats were randomly assigned into 2 groups and treated with daily gavage feedings of probucol at doses of 0 and 500 mg/kg for 12 weeks. A positive control group underwent intraperitoneal injection of normal saline followed by daily gavage of saline solution. Erectile function was assessed by electrical stimulation of the cavernous nerves with real-time intracavernous pressure measurement. After euthanasia, penile tissue was investigated using immunohistochemistry, Western blot, and ELISA to assess the proteins of Nrf2/HO-1/DDAH/PPAR-γ/eNOS pathways. RESULTS After treatment, the rats in the probucol group presented significantly improved erectile function (P < 0.05) than that of the diabetic group without probucol treatment (DM). Also, protein expression of Nrf2, DDAH, PPAR-γ, HO-1 and eNOS was significantly higher than that of the DM group (P < 0.05). CGMP concentrations and SOD concentrations of probucol-treated rats were higher than those of DM group (P < 0.05). The MDA levels and ADMA levels were significantly lower than those of DM group rats (P < 0.05). CONCLUSION Probucol can improve erectile function via activation of Nrf2, which coordinates the HO-1/DDAH/PPAR-γ/eNOS pathways in streptozotocin-induced diabetic rats.
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Affiliation(s)
- Liang-Liang Hu
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China; Department of Urology, Shandong Zaozhuang Municipal Hospital, Zaozhuang, 277000, People's Republic of China
| | - Ke-Qin Zhang
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China
| | - Tao Tian
- Department of Urology, Shandong Zaozhuang Municipal Hospital, Zaozhuang, 277000, People's Republic of China
| | - Hui Zhang
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China
| | - Qiang Fu
- Department of Urology, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong, 250021, People's Republic of China.
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Wei H, Li H, Wan SP, Zeng QT, Cheng LX, Jiang LL, Peng YD. Cardioprotective Effects of Malvidin Against Isoproterenol-Induced Myocardial Infarction in Rats: A Mechanistic Study. Med Sci Monit 2017; 23:2007-2016. [PMID: 28445445 PMCID: PMC5414594 DOI: 10.12659/msm.902196] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Malvidin (alvidin-3-glucoside) is a polyphenol that belongs to the class of natural anthocyanin, which is abundantly found in red wines, colored fruits, and the skin of red grapes. Therefore, the current investigation was intended to evaluate the effect of malvidin against myocardial infarction induced by isoproterenol in the rats. Material/Methods The cardioprotective effects was assessed by determining the effect of malvidin on the activities of endogenous antioxidants – catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH) – and on the levels of lipid peroxidation and serum marker enzymes. The serum levels of IL-6 and TNF-α were also determined using an enzyme-linked immunosorbent assay (ELISA) kit. Result The present study demonstrated a significant cardioprotective effect of malvidin by restoring the defensive activities of endogenous antioxidants – catalase (CAT), superoxide dismutase (SOD), and glutathione peroxidase (GSH) – and by reducing the levels of lipid peroxidation and serum marker enzymes lactate dehydrogenase (LD) and creatine kinase (CK). Malvidin significantly ameliorated the histopathological changes and impaired mitochondria in the cardiac necrosis stimulated with isoproterenol. Additionally, the results also demonstrated that nuclear translocation of Nrf-2 and subsequent HO-1 expression might be associated with nuclear factor kappa B (NF-κB) pathway activation. Conclusions Our findings suggest that malvidin exerts cardioprotective effects that might be due to possible strong antioxidant and anti-inflammatory activities. Therefore, this study provides the basis for the development of malvidin as a safe and effective treatment of myocardial infarction.
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Affiliation(s)
- Hui Wei
- Department of Cardiology, The First Peoples Hospital of Tianmen City, Tianmen, Hubei, China (mainland).,Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Hui Li
- Department of Cardiology, The First Peoples Hospital of Tianmen City, Tianmen, Hubei, China (mainland)
| | - Shu-Ping Wan
- Department of Cardiology, The First Peoples Hospital of Tianmen City, Tianmen, Hubei, China (mainland)
| | - Qiu-Tang Zeng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Long-Xian Cheng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Li-Li Jiang
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
| | - Yu-Dong Peng
- Department of Cardiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei, China (mainland)
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Pigment epithelium-derived factor attenuates myocardial fibrosis via inhibiting Endothelial-to-Mesenchymal Transition in rats with acute myocardial infarction. Sci Rep 2017; 7:41932. [PMID: 28167820 PMCID: PMC5294634 DOI: 10.1038/srep41932] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2016] [Accepted: 01/03/2017] [Indexed: 02/06/2023] Open
Abstract
Endothelial mesenchymal transition (EndMT) plays a critical role in the pathogenesis and progression of interstitial and perivascular fibrosis after acute myocardial infarction (AMI). Pigment epithelium-derived factor (PEDF) is shown to be a new therapeutic target owing to its protective role in cardiovascular disease. In this study, we tested the hypothesis that PEDF is an endogenous inhibitor of EndMT and represented a novel mechanism for its protective effects against overactive cardiac fibrosis after AMI. Masson’s trichrome (MTC) staining and picrosirius red staining revealed decreased interstitial and perivascular fibrosis in rats overexpressing PEDF. The protective effect of PEDF against EndMT was confirmed by co-labeling of cells with the myofibroblast and endothelial cell markers. In the endothelial cells of microvessels in the ischemic myocardium, the inhibitory effect of PEDF against nuclear translocation of β-catenin was observed through confocal microscopic imaging. The correlation between antifibrotic effect of PEDF and inactivation of β-catenin was confirmed by co-transfecting cells with lentivirus carrying PEDF or PEDF RNAi and plasmids harboring β-catenin siRNA(r) or constitutive activation of mutant β-catenin. Taken together, these results establish a novel finding that PEDF could inhibit EndMT related cardiac fibrosis after AMI by a mechanism dependent on disruption of β-catenin activation and translocation.
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Desbats MA, Morbidoni V, Silic-Benussi M, Doimo M, Ciminale V, Cassina M, Sacconi S, Hirano M, Basso G, Pierrel F, Navas P, Salviati L, Trevisson E. TheCOQ2genotype predicts the severity of coenzyme Q10deficiency. Hum Mol Genet 2016; 25:4256-4265. [DOI: 10.1093/hmg/ddw257] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Revised: 07/19/2016] [Accepted: 07/19/2016] [Indexed: 11/13/2022] Open
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Zeigler AC, Richardson WJ, Holmes JW, Saucerman JJ. A computational model of cardiac fibroblast signaling predicts context-dependent drivers of myofibroblast differentiation. J Mol Cell Cardiol 2016; 94:72-81. [PMID: 27017945 DOI: 10.1016/j.yjmcc.2016.03.008] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2015] [Revised: 02/26/2016] [Accepted: 03/17/2016] [Indexed: 12/21/2022]
Abstract
Cardiac fibroblasts support heart function, and aberrant fibroblast signaling can lead to fibrosis and cardiac dysfunction. Yet how signaling molecules drive myofibroblast differentiation and fibrosis in the complex signaling environment of cardiac injury remains unclear. We developed a large-scale computational model of cardiac fibroblast signaling in order to identify regulators of fibrosis under diverse signaling contexts. The model network integrates 10 signaling pathways, including 91 nodes and 134 reactions, and it correctly predicted 80% of independent previous experiments. The model predicted key fibrotic signaling regulators (e.g. reactive oxygen species, tissue growth factor β (TGFβ) receptor), whose function varied depending on the extracellular environment. We characterized how network structure relates to function, identified functional modules, and predicted cross-talk between TGFβ and mechanical signaling, which was validated experimentally in adult cardiac fibroblasts. This study provides a systems framework for predicting key regulators of fibroblast signaling across diverse signaling contexts.
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Affiliation(s)
- A C Zeigler
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - W J Richardson
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - J W Holmes
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA
| | - J J Saucerman
- Department of Biomedical Engineering, University of Virginia, Charlottesville, VA 22908, USA.
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Tan LG, Xiao JH, Yu DL, Zhang L, Zheng F, Guo LY, Yang JY, Tang JM, Chen SY, Wang JN. PEP-1-SOD1 fusion proteins block cardiac myofibroblast activation and angiotensin II-induced collagen production. BMC Cardiovasc Disord 2015; 15:116. [PMID: 26446519 PMCID: PMC4597385 DOI: 10.1186/s12872-015-0103-4] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2014] [Accepted: 09/21/2015] [Indexed: 12/30/2022] Open
Abstract
Background Oxidative stress is closely associated with cardiac fibrosis. However, the effect of copper, zinc-superoxide dismutase (SOD1) as a therapeutic agent is limited due to the insufficient transduction. This study was aimed to investigate the effect of PEP-1-SOD1 fusion protein on angiotensin II (ANG II)-induced collagen metabolism in rat cardiac myofibroblasts (MCFs). Methods MCFs were pretreated with SOD1 or PEP-1-SOD1 fusion protein for 2 h followed by incubation with ANG II for 24 h. Cell proliferation was measured by Cell Counting Kit-8. Superoxide anion productions were detected by both fluorescent microscopy and Flow Cytometry. MMP-1 and TIMP-1 were determined by ELISA. Intracellular MDA content and SOD activity were examined by commercial assay kits. Protein expression was analyzed by western blotting. Results PEP-1-SOD1 fusion protein efficiently transduced into MCF, scavenged intracellular O2−, decreased intracellular MDA content, increased SOD activity, suppressed ANG II-induced proliferation, reduced expression of TGF-β1, α-SMA, collagen type I and III, restored MMP-1 secretion, and attenuated TIMP-1 secretion. Conclusion PEP-1-SOD1 suppressed MCF proliferation and differentiation and reduced production of collagen type I and III. Therefore, PEP-1-SOD1 fusion protein may be a potential novel therapeutic agent for cardiac fibrosis. Electronic supplementary material The online version of this article (doi:10.1186/s12872-015-0103-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Li-Guo Tan
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China. .,Department of Cardiology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Jun-Hui Xiao
- Department of Cardiology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Dan-Li Yu
- Department of Emergency, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Lei Zhang
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Fei Zheng
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Ling-Yun Guo
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Jian-Ye Yang
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Jun-Ming Tang
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China. .,Department of Cardiology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
| | - Shi-You Chen
- Departments of Physiology and Pharmacology, University of Georgia, Athens, GA, 30622, USA.
| | - Jia-Ning Wang
- Institute of Clinical Medicine, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China. .,Department of Cardiology, Renmin Hospital, Hubei University of Medicine, Shiyan, Hubei, 442000, P. R. China.
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Patel C, Deoghare S. Heart failure: novel therapeutic approaches. J Postgrad Med 2015; 61:101-8. [PMID: 25766342 PMCID: PMC4943440 DOI: 10.4103/0022-3859.153104] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 07/12/2013] [Accepted: 08/27/2013] [Indexed: 11/21/2022] Open
Abstract
Heart failure (HF) is a complex clinical syndrome that can result from any structural or functional cardiac disorders that impairs the ability of the ventricle to fill with or eject blood. Despite effective medical interventions, mortality and morbidity remain substantial. There have been significant advances in the therapy of HF in recent decades, such as the introduction of beta-blockers and antagonists of the renin-angiotensin system but still there is a major unmet need for better therapies for HF. In the present era, pathophysiology of HF has been explored. Various novel pathways, molecular sites have been identified, which contribute to the progression of the disease. By targeting these sites, newer pharmacological agents have been developed, which can play a promising role in the treatment of HF. This article focuses on recent advancements in pharmacotherapy of HF, which include agents targeting myocardial contractility, cytokines and inflammation, fibrosis and remodeling, myocardial metabolism, oxidative stress, and other newly defined pathways.
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Affiliation(s)
- C Patel
- Department of Pharmacology, Government Medical College, Surat, Gujarat, India
| | - S Deoghare
- Department of Pharmacology, Government Medical College, Surat, Gujarat, India
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Azizi Y, Faghihi M, Imani A, Roghani M, Nazari A. Post-infarct treatment with [Pyr1]-apelin-13 reduces myocardial damage through reduction of oxidative injury and nitric oxide enhancement in the rat model of myocardial infarction. Peptides 2013; 46:76-82. [PMID: 23727032 DOI: 10.1016/j.peptides.2013.05.006] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 05/14/2013] [Accepted: 05/14/2013] [Indexed: 02/07/2023]
Abstract
Apelin is a newly discovered peptide that has been recently shown to have cardioprotective effects in the animal model of myocardial infarction (MI) and ischemia/reperfusion (I/R) injuries. The aim of the present study was to investigate the long term cardioprotective effect of [Pyr1]-apelin-13 in the rat model of MI. Male Wistar rats (n=22) were randomly divided into three groups: (1) sham operated group (2) control MI group and (3) MI treated with apelin (MI-AP group). MI animals were subjected to 30 min of left anterior descending coronary artery (LAD) ligation and 14 days of reperfusion. 24h after LAD ligation, apelin (10 mol/kg/day) was administered i.p. for 5 days. Blood sampling was performed at days 1, 3, 5 and 7 after MI for determination of serum changes of lactate dehydrogenase (LDH), creatine kinase-MB (CK-MB), malondialdehyde (MDA) and nitric oxide (NO). Myocardial infarct size (IS) and hemodynamic function were also measured at the end of the study at day 14. We found out that post infarct treatment with apelin decreases infarct size, serum levels of LDH, CK-MB and MDA and increases heart rate and serum level of NO in the consecutive days, but there were no significant differences in blood pressure in the MI-AP group in comparison with MI. In conclusion, apelin has long term cardioprotective effects against myocardial infarction through attenuation of cardiac tissue injury and lipid peroxidation and enhancement of NO production.
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Affiliation(s)
- Yaser Azizi
- Department of Physiology, School of Medicine, Tehran University of Medical Science, Tehran, Islamic Republic of Iran
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16
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Abstract
Probucol, an antioxidant and anti-inflammatory agent counteracting atherosclerosis and restenosis, is partially effective by influencing suicidal cell death or apoptosis. In analogy to apoptosis of nucleated cells, suicidal death of erythrocytes or eryptosis is characterized by cell shrinkage and cell membrane scrambling with phosphatidylserine exposure at the erythrocyte surface. Eryptosis is stimulated by increase in cytosolic Ca(2+) activity, for example, after energy depletion or oxidative stress. The present study explored whether probucol influences eryptosis. Phosphatidylserine exposure was estimated from annexin-V-binding, cell volume from forward scatter (FSC), and cytosolic Ca(2+) concentration from fluo-3 fluorescence in flow cytometry. As a result, energy depletion (48-hour glucose removal) increased annexin-V-binding, decreased FSC, and increased fluo-3 fluorescence. Probucol (≤30 μM) did not significantly modify annexin-V-binding, FSC, or fluo-3 fluorescence in the presence of glucose but (at ≥5 μM) blunted the effect of glucose depletion on annexin-V-binding. Probucol (≥20 μM) only slightly blunted the effects of glucose depletion on FSC and fluo-3 fluorescence. Ca(2+) ionophore ionomycin (1 μM) and oxidative stress (30-minute exposure to 0.3 mM of tert-butylhydroperoxide) increased annexin-V-binding, effects again blunted by 30 μM of probucol. In conclusion, probucol blunts cell membrane scrambling after energy depletion and oxidative stress, effects primarily because of interference with the scrambling effects of increased cytosolic Ca(2+) concentration.
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Wei C, Kumar S, Kim IK, Gupta S. Thymosin beta 4 protects cardiomyocytes from oxidative stress by targeting anti-oxidative enzymes and anti-apoptotic genes. PLoS One 2012; 7:e42586. [PMID: 22880044 PMCID: PMC3411836 DOI: 10.1371/journal.pone.0042586] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Accepted: 07/09/2012] [Indexed: 01/04/2023] Open
Abstract
Background Thymosin beta-4 (Tβ4) is a ubiquitous protein with many properties relating to cell proliferation and differentiation that promotes wound healing and modulates inflammatory mediators. The mechanism by which Tβ4 modulates cardiac protection under oxidative stress is not known. The purpose of this study is to dissect the cardioprotective mechanism of Tβ4 on H2O2 induced cardiac damage. Methods Rat neonatal cardiomyocytes with or without Tβ4 pretreatment were exposed to H2O2 and expression of antioxidant, apoptotic, and anti-inflammatory genes was evaluated by quantitative real-time PCR and western blotting. ROS levels were estimated by DCF-DA using fluorescent microscopy and fluorimetry. Selected antioxidant, anti-inflammatory and antiapoptotic genes were silenced by siRNA transfections in neonatal cardiomyocytes and effect of Tβ4 on H2O2-induced cardiac damage was evaluated. Results Pre-treatment of Tβ4 resulted in reduction of the intracellular ROS levels induced by H2O2 in cardiomyocytes. Tβ4 pretreatment also resulted in an increase in the expression of antiapoptotic proteins and reduction of Bax/BCl2 ratio in the cardiomyocytes. Pretreatment with Tβ4 resulted in stimulating the expression of antioxidant enzymes copper/zinc SOD and catalase in cardiomyocytes at both transcription and translation levels. Tβ4 treatment resulted in the increased expression of anti-apoptotic and anti-inflammatory genes. Silencing of Cu/Zn SOD and catalase gene resulted in apoptotic cell death in the cardiomyocytes which was prevented by treatment with Tβ4. Conclusion This is the first report that demonstrates the effect of Tβ4 on cardiomyocytes and its capability to selectively upregulate anti-oxidative enzymes, anti-inflammatory genes, and antiapoptotic enzymes in the neonatal cardiomyocytes thus preventing cell death thereby protecting the myocardium. Tβ4 treatment resulted in decreased oxidative stress and inflammation in the myocardium under oxidative stress.
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Affiliation(s)
| | | | | | - Sudhiranjan Gupta
- Division of Molecular Cardiology, Department of Medicine, College of Medicine, Texas A & M Health Science Center; Scott & White; Central Texas Veterans Health Care System, Temple, Texas, United States of America
- * E-mail:
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Falk MJ, Polyak E, Zhang Z, Peng M, King R, Maltzman JS, Okwuego E, Horyn O, Nakamaru-Ogiso E, Ostrovsky J, Xie LX, Chen JY, Marbois B, Nissim I, Clarke CF, Gasser DL. Probucol ameliorates renal and metabolic sequelae of primary CoQ deficiency in Pdss2 mutant mice. EMBO Mol Med 2011; 3:410-27. [PMID: 21567994 PMCID: PMC3394513 DOI: 10.1002/emmm.201100149] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2011] [Revised: 04/27/2011] [Accepted: 04/28/2011] [Indexed: 11/16/2022] Open
Abstract
Therapy of mitochondrial respiratory chain diseases is complicated by limited understanding of cellular mechanisms that cause the widely variable clinical findings. Here, we show that focal segmental glomerulopathy-like kidney disease in Pdss2 mutant animals with primary coenzyme Q (CoQ) deficiency is significantly ameliorated by oral treatment with probucol (1% w/w). Preventative effects in missense mutant mice are similar whether fed probucol from weaning or for 3 weeks prior to typical nephritis onset. Furthermore, treating symptomatic animals for 2 weeks with probucol significantly reduces albuminuria. Probucol has a more pronounced health benefit than high-dose CoQ10 supplementation and uniquely restores CoQ9 content in mutant kidney. Probucol substantially mitigates transcriptional alterations across many intermediary metabolic domains, including peroxisome proliferator-activated receptor (PPAR) pathway signaling. Probucol's beneficial effects on the renal and metabolic manifestations of Pdss2 disease occur despite modest induction of oxidant stress and appear independent of its hypolipidemic effects. Rather, decreased CoQ9 content and altered PPAR pathway signaling appear, respectively, to orchestrate the glomerular and global metabolic consequences of primary CoQ deficiency, which are both preventable and treatable with oral probucol therapy.
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Affiliation(s)
- Marni J Falk
- Division of Human Genetics, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, USA.
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Administration of pigment epithelium-derived factor inhibits left ventricular remodeling and improves cardiac function in rats with acute myocardial infarction. THE AMERICAN JOURNAL OF PATHOLOGY 2011; 178:591-8. [PMID: 21281791 DOI: 10.1016/j.ajpath.2010.10.018] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2009] [Revised: 10/14/2010] [Accepted: 10/21/2010] [Indexed: 11/23/2022]
Abstract
Oxidative stress and inflammation are involved in cardiac remodeling after acute myocardial infarction (AMI). We have found that pigment epithelium-derived factor (PEDF) inhibits vascular inflammation through its anti-oxidative properties. However, effects of PEDF on cardiac remodeling after AMI remain unknown. We investigated whether PEDF could inhibit left ventricular remodeling and improve cardiac function in rats with AMI. AMI was induced in 8-week-old Sprague-Dawley rats by ligation of the left ascending coronary artery. Rats were treated intravenously with vehicle or 10 μg PEDF/100 g b.wt. every day for up to 2 weeks after AMI. Each rat was followed until 16 weeks of age. PEDF levels in infarcted areas and serum were significantly decreased at 1 week after AMI and remained low during the observational periods. PEDF administration inhibited apoptotic cell death and oxidative stress generation around the infarcted areas at 2 and 8 weeks after AMI. Further, PEDF injection suppressed cardiac fibrosis by reducing transforming growth factor-β and type III collagen expression, improved left ventricular ejection fraction, ameliorated diastolic dysfunction, and inhibited the increase in left ventricular mass index at 8 weeks after AMI. The present study demonstrated that PEDF could inhibit tissue remodeling and improve cardiac function in AMI rats. Substitution of PEDF may be a novel therapeutic strategy for cardiac remodeling after AMI.
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