Journal
JOURNAL OF EXPERIMENTAL NEUROSCIENCE
Volume 10, Issue -, Pages 21-29Publisher
SAGE PUBLICATIONS LTD
DOI: 10.4137/JEN.S25096
Keywords
Acanthophora spicifera; apigenin; analgesic; anti-inflammatory; physicochemical analysis; infrared; mass spectra; ultraviolet spectra
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Physicochemical investigation of the red alga Acanthophora spicifera (Vahl) Borgesen, collected from Al-Shoaiba coast, Red Sea, Saudi Arabia, led to the isolation of a flavone from the algal tissue with acetone. Preparative chromatography on silica gel thin-layer chromatography was used for the separation of the flavone and eluted with the methanol:chloroform:ethyl acetate (1:7:2) solvent system. The physicochemical analyses infrared, mass spectra, and ultraviolet spectra in addition to shift reagents (NaOMe, NaOAc, NaOAc + H3BO3, AlCl3, and AlCl3 + HCl) were used for the identification and elucidation of the structure of the flavone compound (4,5,7-trihydroxy flavonoids). The flavone compound was identified as apigenin bycomparing its physicochemical data with those in the literature. Analgesic and anti-inflammatory activities of apigenin were evaluated. Apigenin showed promising analgesic and anti-inflammatory activities in the hot plate test and writhing test in mice as well as tail-immersion tests and carrageenan-induced paw edema and cotton pellet-induced granuloma formation in rats. It is concluded that apigenin possesses potent analgesic, anti-inflammatory, and antiproliferative activities, which might be due to the inhibition of PGE(2) as well as proinflammatory cytokines such as interleukin-1 beta, interleukin-6, and tumor necrosis factor-alpha.
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