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Abstract Title:

Anti-chikungunya activity of luteolin and apigenin rich fraction from Cynodon dactylon.

Abstract Source:

Asian Pac J Trop Med. 2015 May ;8(5):352-358. PMID: 26003593

Abstract Author(s):

Krishnan Saravana Murali, Srinivasan Sivasubramanian, Savariar Vincent, Shanmugaraj Bala Murugan, Bupesh Giridaran, Sundaram Dinesh, Palani Gunasekaran, Kaveri Krishnasamy, Ramalingam Sathishkumar

Article Affiliation:

Krishnan Saravana Murali

Abstract:

OBJECTIVE: To obtain luteolin and apigenin rich fraction from the ethanolic extract of Cynodon dactylon (L.) (C. dactylon) Pers and evaluate the fraction's cytotoxicity and anti-Chikungunya potential using Vero cells.

METHODS: The ethanolic extract of C. dactylon was subjected to silica gel column chromatography to obtain anti-chikungunya virus (CHIKV) fraction. Reverse phase-HPLC and GC-MS studies were carried out to identify the major phytochemicals in the fraction using phytochemical standards. Cytotoxicity and the potential of the fraction against CHIKV were evaluated in vitro using Vero cells. Reduction in viral replication was assessed by reverse transcriptase-polymerase chain reaction (RT-PCR) after treating the viral infected Vero cells with the fraction.

RESULTS: Reverse Phase-HPLC and GC-MS studies confirmed the presence of flavonoids, luteolin and apigenin as major phytochemicals in the anti-CHIKV ethanolic fraction of C. dactylon. The fraction was found to exhibit potent viral inhibitory activity (about 98%) at the concentration of 50µg/mL as observed by reduction in cytopathic effect, and the cytotoxic concentration of the fraction was found to be 250 µg/mL. RT-PCR analyses indicated that the reduction in viral mRNA synthesis in fraction treated infected cells was much higher than the viral infected control cells.

CONCLUSIONS: Luteolin and apigenin rich ethanolic fraction from C. dactylon can be utilized as a potential therapeutic agent against CHIKV infection as the fraction does not show cytotoxicity while inhibiting the virus.

Study Type : In Vitro Study

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