Sudhanshu Kumar Bharti, Amit Kumar, Om Prakash, Supriya Krishnan and Ashok Kumar Gupta
This study evaluates the antidiabetic activities of essential oil obtained by steam distillation of the leaf sheath of Cymbopogon citratus (CCEO) in poloxamer-407 induced type 2 diabetic (T2D) Wistar rats. The sample was then analyzed by gas chromatography-mass spectroscopy (GCMS) identifying 23 compounds representing 96.9% of the oil. The major compounds of essential oil were geranial (42.4%), neral (29.8%), myrcene (8.9%) and geraniol (8.5%). When compared to diabetic control rats, the CCEO treated diabetic rats presented significant amelioration of glycaemia, insulinamia and lipid dysmetabolism, accompanied by increased GLP-1 content in cecum and remarkable reduction of oxidative markers. Histopatholgical analysis of pancreas showed increase in β-cell mass, islet number and quality of insulitis. HYBRID and FRED docking were performed for 48 documented CCEO phytoconstituents for putative action mechanism concerning three proteins namely PTP-1B, PPAR-γ and DPP-IV having diabetic therapeutic properties. Phytoconstituents like myrcenol, linalool, α-elemol and β-Eudesmol showed significant interaction with PPAR-γ and DPP-IV while only pimelyl dihydrazide showed interaction with PTP-1B. The results provided a pharmacological evidence of CCEO as antidiabetic mediated by interaction of various phytoconstituents with multiple targets operating in diabetes mellitus.
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