Inhibition effect of tacrolimus and platelet-derived growth factor-BB on restenosis after vascular intimal injury - 08/08/17
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Abstract |
Excessive proliferation and migration of vascular smooth muscle cells(VSMCs) and delayed proliferation and migration of endothelial cells(ECs) were the main cause of restenosis after endovascular interventional therapy. Since tacrolimus has proved to be more sensitive to inhibiting VSMCs’ proliferation,and platelet-derived growth factor-BB(PDGF-BB) benefitted ECs’ and VSMCs’ proliferation, this study was aimed to identify combined effect of tacrolimus and PDGF-BB, investigate any mechanisms underneath and demonstrate combined effect of two drugs in vivo. As the results showed we confirmed differential effect of PDGF-BB and tacrolimus on ECs and VSMCs. On the concentration level of 2–5μg/ml tacrolimus plus 10ng/ml PDGF-BB, combination of drugs could effectively promote ECs proliferation and migration, and meanwhile inhibit VSMCs proliferation and migration, and the inhibition of p-mTOR’s expression within VSMCs played an important role in this differentiated effect. Raising concentration level of PDGF-BB would weaken inhibitory effect of tacrolimus on both kinds of cell. For injured intima, the mix solution of two drugs could promote intima healing and suppress excessive intimal hyperplasia.
Le texte complet de cet article est disponible en PDF.Keywords : Tacrolimus, PDGF-BB, Restenosis, Reendothelialization
Plan
Vol 93
P. 180-189 - septembre 2017 Retour au numéro
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