Combination of Vildagliptin and Ischemic Postconditioning in Diabetic Hearts as a Working Strategy to Reduce Myocardial Reperfusion Injury by Restoring Mitochondrial Function and Autophagic Activity

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Bayrami Goltaj; ALIHEMMATI ALIREZA; KARIMI POURAN; Javadi Aniseh; KEYHANMANESH RANA; MOHAMMADI MUSTAFA; ZADI HEYDARABAD MILAD; BADALZADEH REZA

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Journal: Advanced Pharmaceutical Bulletin Year:2018 | Volume:8 | Issue:2 Page(s): 319-329

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Title

Combination of Vildagliptin and Ischemic Postconditioning in Diabetic Hearts as a Working Strategy to Reduce Myocardial Reperfusion Injury by Restoring Mitochondrial Function and Autophagic Activity

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Keywords

Ischemic postconditioning

Diabetes

Reperfusion injury

Autophagy

Mitochondrial function

Abstract

Purpose: Diabetic hearts are resistant to cardioprotection by ischemic-postconditioning (IPostC). Protection of diabetic hearts and finding related interfering mechanisms would have clinical benefits. This study investigated the combination effects of vildagliptin (Vilda) and IPostC on cardioprotection and the levels of Autophagy and Mitochondrial function following myocardial ischemia/reperfusion (I/R) injury in type-II diabetic rats. Methods: Diabetes was established by high fat diet/low dose of streptozotocin and lasted for 12 weeks. The diabetic rats received Vilda (6 mg/kg/day, orally) for one month before I/R. Myocardial regional ischemia was induced through the ligation of left coronary artery, and IPostC was applied immediately at the onset of reperfusion. The infarct size was assessed by a computerised planimetry and left ventricles samples were harvested for cardiac Mitochondrial function studies (ROS production, membrane potential and staining) and western blotting was used for determination of Autophagy markers. Results: None of Vilda or IPostC but combination of them could significantly reduce the infarct size of diabetic hearts, comparing to control (P<0. 001). IPostC could not significantly affect p62 expression level in diabetic hearts, but pre-treatment with Vilda alone (p<0. 05) and in combination with IPostC (p<0. 01) more significantly decreased p62 expression in comparison with corresponding control group. The expression of LC3B-II and LC3BII/LC3BI as well as mitochondrial ROS production were decreased significantly in treatment groups (p<0. 001). Mitochondrial membrane depolarization was significantly higher and mitochondrial density was lower in untreated diabetic I/R hearts than treated groups (p<0. 001). IPostC in combination with vildagliptin prevented the mitochondrial membrane depolarization and increased the mitochondrial content more potent than IPostC alone in diabetic hearts. Conclusion: Combination of vildagliptin and IPostC in diabetic hearts was a well-working strategy to reduce myocardial I/R damages by restoring mitochondrial membrane potential and ROS production and modulating the autophagic activity in I/R hearts.

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APA: Copy

Bayrami, Goltaj, ALIHEMMATI, ALIREZA, KARIMI, POURAN, Javadi, Aniseh, KEYHANMANESH, RANA, MOHAMMADI, MUSTAFA, ZADI HEYDARABAD, MILAD, & BADALZADEH, REZA. (2018). Combination of Vildagliptin and Ischemic Postconditioning in Diabetic Hearts as a Working Strategy to Reduce Myocardial Reperfusion Injury by Restoring Mitochondrial Function and Autophagic Activity. ADVANCED PHARMACEUTICAL BULLETIN, 8(2), 319-329. SID. https://sid.ir/paper/740014/en

Vancouver: Copy

Bayrami Goltaj, ALIHEMMATI ALIREZA, KARIMI POURAN, Javadi Aniseh, KEYHANMANESH RANA, MOHAMMADI MUSTAFA, ZADI HEYDARABAD MILAD, BADALZADEH REZA. Combination of Vildagliptin and Ischemic Postconditioning in Diabetic Hearts as a Working Strategy to Reduce Myocardial Reperfusion Injury by Restoring Mitochondrial Function and Autophagic Activity. ADVANCED PHARMACEUTICAL BULLETIN[Internet]. 2018;8(2):319-329. Available from: https://sid.ir/paper/740014/en

IEEE: Copy

Goltaj Bayrami, ALIREZA ALIHEMMATI, POURAN KARIMI, Aniseh Javadi, RANA KEYHANMANESH, MUSTAFA MOHAMMADI, MILAD ZADI HEYDARABAD, and REZA BADALZADEH, “Combination of Vildagliptin and Ischemic Postconditioning in Diabetic Hearts as a Working Strategy to Reduce Myocardial Reperfusion Injury by Restoring Mitochondrial Function and Autophagic Activity,” ADVANCED PHARMACEUTICAL BULLETIN, vol. 8, no. 2, pp. 319–329, 2018, [Online]. Available: https://sid.ir/paper/740014/en

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