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- W3030492720 abstract "Objective To investigate the vasodilatation effects of total flavonoid from polygonum aviculare on rat thoracic aorta and its underlying mechanisms. Methods Total flavonoid from polygonum aviculare was gotten by extracted with 65% alcohol, gathered with polyamide, and eluted with 75% alcohol. The content of flavone was determined with rutoside as standard preparation. Normal rats thoracic aorta in vitro used as sample, BL-420E biological functional experiment system was utilized to record dilatation effect of total flavonoid on PE affecting pre-contracting blood vessel and the relation between dilatation effect of total flavonoid on blood vessel and calcium influx. Results Total flavonoids from polygonum aviculare can diastole contractions of thoracic aorta caused by PE. In calcium-free perfusion, gradually adding CaCl2 induced calcium influx. Clinical data showed dose-effect relation between drug and blood vessel contraction decreased in the total flavonoids from polygonum aviculare incubation rats than normal rats. Besides, total flavonoids from polygonum aviculare can obviously inhibit contraction of blood vascular circle induced by calcium releasing. Conclusion FP exerted a dose-dependent vasodilatation effect on rat isolated aorta rings by inhibiting Ca2＋ influx via L-type voltage-gated Ca2＋ channels and Ca2＋ release from sarcoplasmic reticulum, consequently decrease Ca2＋ in vascular smooth muscle cells.Key words: Polygonum aviculare; Total flavone; Hypertension; Vasodilation" @default.
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- W3030492720 date "2011-02-28" @default.
- W3030492720 modified "2023-09-25" @default.
- W3030492720 title "Study on vasodilatation effects of total flavonoid from polygonum aviculare on blood vessel of rat in vitro" @default.
- W3030492720 doi "https://doi.org/10.3760/cma.j.issn.1673-4246.2011.02.005" @default.
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