4.7 Article

Effects of the SGLT2 Inhibition on Cardiac Remodeling in Streptozotocin-Induced Diabetic Rats, a Model of Type 1 Diabetes Mellitus

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ANTIOXIDANTS
卷 11, 期 5, 页码 -

出版社

MDPI
DOI: 10.3390/antiox11050982

关键词

SGLT2 inhibitor; ventricular remodeling; oxidative stress; myocardial fibrosis; dapagliflozin; cardiac function

资金

  1. FAPESP [2015/02324-3]
  2. CNPq [2018/00567-4, 308557/2018-2, 310876/2018-4]
  3. PROPe, UNESP

向作者/读者索取更多资源

Clinical trials have shown that SGLT2 inhibitors improve clinical outcomes in patients with diabetes mellitus. This study aimed to analyze the effects of the SGLT2 inhibitor dapagliflozin on cardiac remodeling in a rat model of Type 1 diabetes mellitus. The results demonstrated that dapagliflozin improved blood pressure, glycemia, and cardiac function, and attenuated cardiac changes in the experimental rat model.
Clinical trials have shown that sodium glucose co-transporter 2 (SGLT2) inhibitors improve clinical outcomes in diabetes mellitus (DM) patients. As most studies were performed in Type 2 DM, the cardiovascular effects of SGLT2 inhibition still require clarification in Type 1 DM. We analyzed the effects of SGLT2 inhibitor dapagliflozin on cardiac remodeling in rats with streptozotocin-induced diabetes, an experimental model of Type 1 DM. Methods: Male Wistar rats were assigned into four groups: control (C, n = 14); control treated with dapagliflozin (C + DAPA, n = 14); diabetes (DM, n = 20); and diabetes treated with dapagliflozin (DM + DAPA, n = 20) for 8 weeks. Dapagliflozin dosage was 5 mg/kg/day. Statistical analyses: ANOVA and Tukey or Kruskal-Wallis and Dunn. Results: DM + DAPA presented decreased blood pressure and glycemia and increased body weight compared to DM (C 507 +/- 52; C + DAPA 474 +/- 50; DM 381 +/- 52 *; DM + DAPA 430 +/- 48 # g; * p < 0.05 vs. C; # p < 0.05 vs. C + DAPA and DM + DAPA). DM echocardiogram presented left ventricular and left atrium dilation with impaired systolic and diastolic function. Cardiac changes were attenuated by dapagliflozin. Myocardial hydroxyproline concentration and interstitial collagen fraction did not differ between groups. The expression of Type III collagen was lower in DM and DM + DAPA than their controls. Type I collagen expression and Type I-to-III collagen ratio were lower in DM + DAPA than C + DAPA. DM + DAPA had lower lipid hydroperoxide concentration (C 275 +/- 42; C + DAPA 299 +/- 50; DM 385 +/- 54 *; DM + DAPA 304 +/- 40 # nmol/g tissue; * p < 0.05 vs. C; # p < 0.05 vs. DM) and higher superoxide dismutase and glutathione peroxidase activity than DM. Advanced glycation end products did not differ between groups. Conclusion: Dapagliflozin is safe, increases body weight, decreases glycemia and oxidative stress, and attenuates cardiac remodeling in an experimental rat model of Type 1 diabetes mellitus.

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