Novartis Institutes for BioMedical Research, Inc., 100 Technology Square, Cambridge, MA 02139, USA.
Endocrinology. 2010 Jul;151(7):3115-24. doi: 10.1210/en.2009-1366. Epub 2010 May 19.
Cevoglitazar is a dual agonist for the peroxisome proliferator-activated receptor (PPAR)-alpha and -gamma subtypes. Dual activation of PPARalpha and -gamma is a therapeutic approach in development for the treatment of type 2 diabetes mellitus and diabetic dyslipidemia. In this report, we show that, in addition to improving insulin sensitivity and lipid metabolism like other dual PPAR agonists, cevoglitazar also elicits beneficial effects on energy homeostasis in two animal models of obesity. In leptin-deficient ob/ob mice, administration of cevoglitazar at 0.5, 1, or 2 mg/kg for 18 d led to acute and sustained, dose-dependent reduction of food intake and body weight. Furthermore, plasma levels of glucose and insulin were normalized after 7 d of cevoglitazar treatment at 0.5 mg/kg. Plasma levels of free fatty acids and triglycerides were dose-dependently reduced. In obese and insulin-resistant cynomolgus monkeys, treatment with cevoglitazar at 50 and 500 mug/kg for 4 wk lowered food intake and body weight in a dose-dependent manner. In these animals, cevoglitazar also reduced fasting plasma insulin and, at the highest dose, reduced hemoglobin A1c levels by 0.4%. These preclinical results demonstrate that cevoglitazar holds promise for the treatment of diabetes and obesity-related disorders because of its unique beneficial effect on energy balance in addition to improving glycemic and metabolic control.
西罗格列扎是过氧化物酶体增殖物激活受体(PPAR)-α和-γ亚型的双重激动剂。PPARα和-γ的双重激活是开发用于治疗 2 型糖尿病和糖尿病血脂异常的治疗方法。在本报告中,我们表明,除了像其他双重 PPAR 激动剂一样改善胰岛素敏感性和脂质代谢外,西罗格列扎还对两种肥胖动物模型的能量平衡产生有益影响。在瘦素缺乏的 ob/ob 小鼠中,连续 18 天给予西罗格列扎 0.5、1 或 2mg/kg 可导致急性和持续的、剂量依赖性的食物摄入和体重减少。此外,0.5mg/kg 西罗格列扎治疗 7 天后,血糖和胰岛素的血浆水平恢复正常。血浆游离脂肪酸和甘油三酯水平呈剂量依赖性降低。在肥胖和胰岛素抵抗的食蟹猴中,连续 4 周给予西罗格列扎 50 和 500μg/kg,可剂量依赖性地降低食物摄入和体重。在这些动物中,西罗格列扎还降低了空腹胰岛素水平,在最高剂量下,血红蛋白 A1c 水平降低了 0.4%。这些临床前结果表明,西罗格列扎有望用于治疗糖尿病和肥胖相关疾病,因为它除了改善血糖和代谢控制外,对能量平衡还有独特的有益作用。