Abstract Title:

Protective efficacy of Tinospora sinensis against streptozotocin induced pancreatic islet cell injuries of diabetic rats and its correlation to its phytochemical profiles.

Abstract Source:

J Ethnopharmacol. 2019 Oct 25:112356. Epub 2019 Oct 25. PMID: 31669668

Abstract Author(s):

Anindita Banerjee, Siddhartha Singh, Shilpi Kumari Prasad, Sourav Kumar, Oly Banerjee, Tapan Seal, Sandip Mukherjee, Bithin Kumar Maji

Article Affiliation:

Anindita Banerjee


ETHNOPHARMACOLOGICAL RELEVANCE: Tinospora sinensis Lour. (Merr.) belongs to the family Menispermaceae and its stem extract have been used traditionally in broad aspects of therapeutic remedies including debility, dyspepsia, fever, jaundice, ulcer, bronchitis, urinary disease, skin disease, liver disease and diabetes.

AIM OF THE STUDY: The aim of the study was to evaluate the protective effects of methanol extract of stem of Tinospora sinensis (METS) on streptozotocin induced pancreatic islet cell injuries of diabetic rats and its correlation to its phytochemical profiles.

MATERIALS AND METHODS: A high-performance liquid chromatography technique (HPLC) was used to identify and quantify the major phytochemicals present in the METS. Diabetic rats were administered with METS at a dose of (100, 200 and 400 mg/kg respectively orally) and standard drug Metformin (300 mg/kg) was given orally to group serving positive control. Effect of the METS on glucose homeostasis, oxidative stress, antioxidant status, histopathology of pancreas and also on intracellular reactive oxygen species (ROS), mitochondrial membrane potential, apoptosis, cell cycle of pancreatic islet cells were studied in diabetic rats.

RESULTS: The major phytochemicals identified and quantified by HPLC in the extract were berberine, caffeic acid, myricetin and ferulic acid. This result showed that methanol extract exhibited good antioxidant effect. The methanol extract of the plant prevented the diabetogenic effect of STZ and significantly lowered the fasting blood glucose level, glycated haemoglobin and increased insulin and C-peptide level in treated rats. METS reduced apoptosis of STZ treated islet cells by significantly decreasing pro-inflammatory cytokines (TNFα, IL6), intracellular ROS generation, lipid peroxidation, nitric oxide (NO) production and increasing mitochondrial membrane potential and sub-Gpeak area, enzymatic and nonenzymatic antioxidants.

CONCLUSION: The results revealed that the methanol extract of the stem of the plant possesses protective effects against diabetes and associated complications.

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