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Platelet activating factor-induced P-selectin expression in platelets and its related signal transduction.

  
@article{APS8290,
	author = {Shang Zeng and Fu-xian Yi and Zhao-gui Guo},
	title = {Platelet activating factor-induced P-selectin expression in platelets and its related signal transduction.},
	journal = {Acta Pharmacologica Sinica},
	volume = {20},
	number = {10},
	year = {2016},
	keywords = {},
	abstract = {AIM:
To study the intracellular signal transduction mechanisms of platelet activating factor (PAF)-induced platelet P-selectin expression.
METHODS:
Human blood platelets were used to test the effect of PAF-induced P-selectin expression using flow cytometry.
RESULTS:
PAF 20 nmol.L-1 elicited a moderate upregulation of P-selectin expression [(47.5 +/- 1.3)% vs control (3.8 +/- 0.9)%, P < 0.01]. Pretreatment with egtazic acid (EGTA) 2 mmol.L-1 and 5,5'- dimethyl-bis-(o-aminophenoxy)-ethane-N,N,N',N'-tetracetic acid (BAPTA) 200 mumol.L-1 to block Ca2+ influx or chelate the intracellular calcium, respectively, reduced P-selectin expression in response to PAF [(13.3 +/- 0.9)% and (16.8 +/- 1.9)% vs (47.5 +/- 1.3)% of PAF group, P < 0.01]. Inhibition of Na+/H+ exchange with amiloride (Ami) 400 mumol.L-1 resulted in an inhibition of P-selectin expression [(37.5 +/- 2.1)% vs (47.5 +/- 1.3)% of PAF group, P < 0.01]. Genistein (Gen) 300 mumol.L-1 to inhibit protein tyrosine phosphorylation showed similar effect [(29 +/- 4)% vs (47.5 +/- 1.3)% of PAF group, P < 0.01].
CONCLUSION:
Multiple signal transduction pathways, including protein tyrosine phosphorylation, Na+/H+ exchange, and Ca2+ mobilization, mediated PAF-induced P-selectin expression.},
	issn = {1745-7254},	url = {http://www.chinaphar.com/article/view/8290}
}