Overview Of Signaling Mechanism Pathways Employed By Bpaid In Vasodilatory Activity
JOURNAL OF MEDICINAL FOOD(2017)
Abstract
Hypertension, one of the famous silent killers that can attack people at any age, is a current hot topic among scientists due to multiple syndromic behavior and concomitant diseases. The new scientific-based Traditional Chinese Medicine (TCM) formulation approach was used in a previous study by combining five TCM herbs, including Gastrodia elata Bl., Uncaria rhynchophylla (Miq.) Miq. ex Havil., Pueraria thomsonii Benth., Panax notoginseng (Burk.) F.H. Chen, and Alisma orientalis (Sam.) Juzep in optimized ratio (named BPAid). The objective of the present study was to evaluate the mechanism pathways employed by BPAid for vasodilatory effect with the use of an in vitro isolated aortic rings assay. Interestingly, all the mechanisms investigated were involved in the BPAid's vasodilation activity in which the majority contributed through the nitric oxide/soluble guanylyl cyclase/cyclic guanosine monophosphate (NO/sGC/cGMP) pathways, followed by prostacyclin (PGI(2)), (2)-adrenergic, and M-3-receptors pathways. Furthermore, the BPAid appeared to manage vascular tone by regulating action potential through potassium and both voltage-operated calcium channel and inositol triphosphate receptor (IP3R) pathways. The results obtained has confirmed the expected outcome that the benefits of TCM herbs in BPAid can meet the criteria of counteracting multiple signaling mechanism pathways involved in the etiology of hypertension. In addition to this study, the fingerprints and chemical properties of BPAid was identified by using tri-step Fourier transform infrared spectroscopy and compared with its derivatives. The results obtained suggested that the majority of the vasodilatory effects exerted by BPAid were attributed to the presence of saponins and aromatic ring-containing vasoactive compounds.
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Key words
antihypertensive,in vitro aortic rings assay,signaling mechanism pathways,TCM herbs combination,vasodilation
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