Epidemiological studies revealed that Indians are at greater risk of
getting myocardial infarction. On the other hand, India sports the
highest per capita consumption of fresh peanuts globally, standing at
6.3kg in 2010. The boiled peanuts (Arachis hypogaea) is said to
possess a bioactive phytoprinciple, resveratrol, which is said to be a
potent cardioprotective agent. Hence this study was designed to
investigate the cardio protective effect of the methanolic extract of
boiled peanuts (Arachis hypogaea) against isoproterenol induced
experimental myocardial infarction in albino rats. Wistar albino rats
were pretreated with the methanolic extract of A. hypogaea (33mg /
kg. of body weight, orally) for 15 days and then induced with
isoproterenol (ISO 30 mg/kg of body weight, sub-cutaneously for 2
consecutive days). On 18th day, blood was collected by cervical
decapitation under anesthesia. Heart was removed for
histopathological studies. Serum samples were used to estimate total
cholesterol, triglycerides, HDL, LDL. The enzyme markers lactate
dehydrogenase, SGOT and SGPT were estimated. In isoproterenol,
induced rats levels of cholesterol, TG, LDL were increased
significantly with a decrease in HDL level and the enzyme markers
like LDH, SGOT, SGPT levels were increased. The pretreated group
animals with A. hypogaea showed decreased marker enzymes level,
cholesterol, TG, LDL and increased HDL level. The results
suggested that the methanolic extract of Arachis hypogaea possess
cardioprotective effect on experimentally induced myocardial
infarcted albino rats. The activity might be because of the high
content of resveratrol present in the boiled peanuts.