Résumé
Background: With the rapid depletion of forests, impairing the availability of raw drugs, Ayurveda, hasreached a very critical phase. Consequently, cultivation of medicinal plants is essential to ensure theiravailability to the industry. In view of the above concept, organic farming of medicinal plants needsscientific validity.Objectives: The present study includes the organic and non-organic cultivation of Cymbopogon citratus,followed by toxicological and pharmacological profiling of extracts.Materials and methods: C. citratus was simultaneously cultivated organically (OCC) and non-organically(NCC). Toxicity profile of aqueous extracts was recorded on prokaryotes using bioluminescent bacteria,Vibrio harveyi and evaluated its type 2 anti-diabetic activity.Results: OCC have shown the higher mean values of height, number of germplasms and root lengthscompared to NCC. The higher level of toxicity was shown by NCC with decrease in bioluminescence withincreasing concentration of extract. In acute type 2 anti-diabetic study, OCC showed prominent decreasein blood glucose at postprandial condition (6th h) (48.86% OCC-200). The order of sub-chronic antidiabetic activity was observed as positive control > OCC-200 > NCC-200, while OCC at 200 mg/kg corrected the altered lipid profile and antioxidant status with significant increase in body weights of animals. Histopathological examination of pancreas showed the enlargement of pancreatic islets andformation of neo islets with degenerative changes in OCC treated animals.Conclusion: The study confirms that organically grown C. citratus is better in terms of nourishment,biological activity and safety measures.© 2017 Transdisciplinary University, Bangalore and World Ayurveda Foundation. Publishing Services byElsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Résumé
The aim of the present study was to investigate the pancreatic regeneration potential of of diferent fractions of the ethanol extract Clitoria ternatea L., Fabaceae. The antidiabetic and antihyperlipidemic potential was evaluated in streptozotocin-induced diabetic rats and correlated with its in vivo and in vitro antioxidant activity. The extract and its fractions were initially screened for acute and sub-chronic antidiabetic activity in the dose range of 100200 mg/kg. The most potent extract and fractions were further evaluated for pancreatic β-cells regeneration activity along with antioxidant and antihyperlipidemic activity. The polyphenolic, flavonoid and flavanone contents were assessed and correlated with its antidiabetic activity. The most significant pancreatic regeneration activity, antidiabetic and antihyperlipidemic activity and was shown by ethanol extract and butanol soluble fraction at a dose level of 200 mg/kg, while rutin was found to be least potent. In conclusion, pancreatic regeneration studies of ethanol extract treated rats show nesidioblastosis. It is also suggested that the factors causing regeneration are present within the pancreas. The newly generated islets may have formed from the ductal precursor cells and reduced oxidative stress helps in restoration of β-cell function.