To characterize the pro tective effects of the triterpenoid mixture alpha, beta-amyrin (AMY, 20 mg/kg, during 15 days) on the reactivity of isolated aorta of high- fat diet (HFD)-induced obese mice. Male Swiss mice were fed with HFD or normal diet (ND) for 15 weeks. Contractions of thoracic aorta in response to KCl or phen- ylephrine (PHE) and relaxation by acetylcholine (ACh) or sodium nitroprusside (SNP) were...