Anti-diabetic potential of Urena lobata leaf extract through inhibition of dipeptidyl peptidase IV activity

Objective: To evaluate the anti-diabetic potential of leaf extract from Urena lobata (U. lobata) through dipeptidyl peptidase IV (DPP-IV) inhibitory activity. Methods: U. lobata leaf was extracted in hot water and ethanol. The activity of DPP-IV inhibitor was tested by in vitro study using gly-pro-p...

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Bibliographic Details
Published in:Asian Pacific Journal of Tropical Biomedicine
Main Authors: Yudi Purnomo, Djoko Wahono Soeatmadji, Sutiman Bambang Sumitro, Mochamad Aris Widodo
Format: Article in Journal/Newspaper
Language:English
Published: Wolters Kluwer Medknow Publications 2015
Subjects:
Anti-diabetic
Dipeptidyl peptidase IV
In silico
In vitro
Urena lobata
Arctic medicine. Tropical medicine
RC955-962
Biology (General)
QH301-705.5
Arctic
Online Access:https://doi.org/10.1016/j.apjtb.2015.05.014
https://doaj.org/article/d1e0692b8922475782583c39535cd7cb
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Summary:Objective: To evaluate the anti-diabetic potential of leaf extract from Urena lobata (U. lobata) through dipeptidyl peptidase IV (DPP-IV) inhibitory activity. Methods: U. lobata leaf was extracted in hot water and ethanol. The activity of DPP-IV inhibitor was tested by in vitro study using gly-pro-p-nitroanilide as substrat of DPP-IV and vildagliptin, as standard reference. A product of the reactions between gly-pro-p-nitroanilide and DPP-IV, was observed by microplate readers with λ = 405 nm. All data were expressed as mean ± SD and the IC50 value was determined by non linear regression curve fit. Active substances in leaf extract of U. lobata was analyzed by liquid chromatography-mass spectrometry. DPP-IV inhibitory activity of active compounds was evaluated in silico using docking server. Results: The ethanolic extract of U. lobata showed stronger DPP-IV inhibitor activity than water extract with the IC50 values of 1 654.64 and 6 489.88 μg/mL, respectively. Vildagliptin, based on standard reference for DPP-IV inhibitor activity, has IC50 value of 57.44 μg/mL. Based on in silico analysis, mangiferin, stigmasterol and β-sitosterol in U. lobata extract have a strong inhibitory activity on DPP-IV. Conclusions: The results showed that DPP-IV inhibitory activity of U. lobata is related to its active compounds such as mangiferin, stigmasterol and β-sitosterol.

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