TERMINALIA PANICULATA BARK EXTRACT FOR ANTIDIABETIC ACTIVITYAbstract
Terminalia paniculata Roth. (TP) is a tropical tree. Traditionally, flower juice and bark of Terminalia paniculata have been used as a remedy for cholera, for the treatment of diabetes, inflamed parotid glands and in menstrual disorders. The objective of the present study is to evaluate the antidiabetic potential of Terminalia paniculata bark extract in various in-vitro models and its safety evaluation using Wistar albino rats. The in-vitro antidiabetic activity was studied using Alpha amylase, Alpha glucosidase inhibition and Glucose diffusion assay. The nitric oxide radicals scavenging activity was determined using antioxidant assay. Acute and sub acute toxicity studies were designed as per the OECD guidelines- 423. TP extract shows maximum inhibition of 94.5 % on α-Amylase at 700 µg/ml and 94 % on α-Glucosidase at 1000 µg/ml. In glucose diffusion, it showed highest activity at a concentration of 1500 µg/ml. Also, it had excellent nitric oxide scavenging activity and maximum percentage inhibition of 86.12±1.01 was observed at 1500 µg/ml. Acute toxicity study supported the tolerance level even at the dose of 5000 mg/kg body weight and no toxic signs and mortality were observed. The sub acute toxicity studies did not show any significant changes in the body weight and haematological parameters in the TP extract treated groups up to the daily oral dose of 2000 mg/kg body weight. Our findings point out the promising effect of Terminalia paniculata Roth. bark as a valuable antidiabetic representative in diabetic complications
R. Srinivasan *, U. M. Dhanalekshmi , T. Gowri , S. Duarah
Bio Organic Division, Central Leather Research Institute, Council of Scientific and Industrial Research, Chennai, Tamil nadu, India.
30 September, 2015
17 November, 2015
05 February, 2016
01 March, 2016