Evaluation of pancreatic regeneration activity of Tephrosia purpurea leaves in rats with streptozotocin-induced diabetes

Background and aim: Flavonoid rich plant Tephrosia purpurea (T. purpurea), commonly known as Sarpunkha has been used in traditional systems of medicine to treat diabetes mellitus. However, its effectiveness in promoting regeneration of pancreas in diabetes has not been investigated. Therefore, the present study was undertaken to evaluate pancreatic beta-cells regeneration, antioxidant and anti-hyperlipidemic potentials of T. purpurea leaves extract, its fractions and main constituent Rutin in diabetic rats. Experimental procedure: The leaves extract and its fractions were first screened for acute and sub-chronic antidiabetic activity in a dose range of 250-500 mg/kg orally. Further, fractions with potent antidiabetic activity were screened for pancreatic beta-cells regeneration activity using histopathological studies and morphometric analysis, which was followed by estimation of biochemical parameters. Results and conclusion: The most significant antidiabetic, pancreatic regeneration and antihyperlipidemic activity was exhibited by n-butanol soluble fraction of ethanol extract at the dose level of 500 mg/kg. Histopathology revealed that treatment with this fraction improved the beta-cell granulation of islets and prevented the beta-cells damage which was further confirmed by morphometric analysis. Thus, the present study validated the traditional use of T. purpurea plant in the treatment of diabetes, which might be attributed to pancreatic beta-cells regeneration potential of its active constituent Rutin. Taxonomy (classification by EVISE): Traditional Medicine; Metabolic Disorder; Experimental Design; Cell Regeneration and Histopathology. (C) 2021 Center for Food and Biomolecules, National Taiwan University. Production and hosting by Elsevier Taiwan LLC.