Beneficial Effect of the SGLT2 Inhibitor Empagliflozin on Glucose Homeostasis and Cardiovascular Parameters in the Cohen Rosenthal Diabetic Hypertensive (CRDH) Rat.
JOURNAL OF CARDIOVASCULAR PHARMACOLOGY AND THERAPEUTICS(2018)
摘要
The effectiveness of empagliflozin (EMPA), a sodium glucose cotransporter type 2 inhibitor, on the kidney, pancreas, and heart was investigated in the Cohen Rosenthal diabetic hypertensive rat model (CRDH rat). Six-week-old CRDH male rats were fed a sugar diet (SD) and treated with the compound EMPA (group Drug/SD) or respective comparator with vehicle (group Veh/SD). A control group was fed a regular diet without treatment (group Veh/P). Preventive treatment with EMPA was measured during 4 months of follow-up. The treatment effect was evaluated according to results observed after 4 months in group Drug/SD when compared to those in group Veh/SD. Significant effect resulted in the following parameters: enhancement of urinary glucose excretion in association with diuresis; amelioration of postprandial hyperglycemia and fasting blood glucose levels; and decrease in calculated Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) as well as lower systolic and diastolic blood pressures. At the end of treatment, EMPA preserved nephrin integrity in the kidney, reduced proteinuria, and prevented diabetes-induced damage to glomerular diaphragm structure. In the pancreas, EMPA demonstrated an impressive decrease in fatty infiltration and atrophy. Blood pressure was significantly reduced in the EMPA-treated group (15 +/- 5.1 mm Hg, P < .05) in contrast to the vehicle and control groups. Finally, compared to controls, EMPA significantly reduced left ventricle (LV) mass and LV systolic dilatation, according to 2-dimensional echocardiography. The importance of the study lies in demonstrating the efficacy of an antidiabetic drug with beneficial effects on blood pressure, weight, kidney, and pancreas and a positive effect on the heart.
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关键词
empagliflozin,diabetes,hypertension,Cohen-Rosenthal diabetic-hypertensive rat (CRDH),improvement of cardiac function,preservation of pancreas
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