L-Carvone from Mentha spicata L. Leaves Suppresses Oxidative Stress and Hypertrophy in the Isoproterenol-Induced Rat Model of Cardiac Hypertrophy

The effect of L-Carvone (a natural monoterpene from Mentha spicata L., leaves) in cardiac hypertrophy caused by isoproterenol administration was investigated. Male rats (Wistar) were divided into five groups: Control, diseased, diseased rats with losartan, diseased rats with low-dose L-Carvone, and high-dose L-Carvone. Rats were injected with isoproterenol (5 mg/kg) for 30 days to induce cardiac hypertrophy. Then, simultaneously with Losartan (15 mg/kg), L-Carvone was administered orally at a dosage of 25 mg/kg (low dose) and 100 mg/kg (high dose) treatment. The cardioprotective effect of L-Carvone was evaluated by examining the heart morphometric indices, and ECG analyses. Chronic isoproterenol administration resulted in changes in morphometric indices of the heart, ECG tracings, biochemical parameters such as tissue glucose, proteins, lipid profiles, serum cardiac markers, antioxidants, and histopathological integrity of the heart tissue. When compared with the isoproterenol group, L-Carvone administrated for 30 days ameliorated all these changes in rats significantly (p < 0.05). L-Carvone adequately averted chronic cardiac hypertrophy, most probably through its antioxidant potential.