Health & Environmental Research Online (HERO)


Print Feedback Export to File
2831438 
Journal Article 
p-Hydroxybenzyl alcohol-containing biodegradable nanoparticle improves functional blood flow through angiogenesis in a mouse model of hindlimb ischemia 
Cho, BR; Ryu, DR; Lee, KS; Lee, DK; Bae, S; Kang, DG; Ke, Q; Singh, SS; Ha, KS; Kwon, YG; Lee, D; Kang, PM; Kim, YM 
2015 
Yes 
Biomaterials
ISSN: 0142-9612
EISSN: 1878-5905 
Elsevier Ltd 
53 
679-687 
English 
25890763 
WOS:000353929800063 
Therapeutic angiogenesis has achieved promising results for ischemic diseases or peripheral artery disease in preclinical and early-phase clinical studies. We examined the therapeutic angiogenic effects of HPOX, which is biodegradable polymer composing the antioxidant p-hydroxybenzyl alcohol (HBA), in a mouse model of hindlimb ischemia. HPOX effectively stimulated blood flow recovery, compared with its degraded compounds HBA and 1,4-cyclohexendimethanol, via promotion of capillary vessel density in the ischemic hindlimb. These effects were highly correlated with levels of angiogenic inducers, vascular endothelial cell growth factor (VEGF), heme oxygenase-1 (HO-1), and Akt/AMPK/endothelial nitric oxide synthase (eNOS) in ischemic mouse hindlimb muscle. Blood perfusion and neovascularization induced by HPOX were reduced in eNOS(-/-) and HO-1(+/-) mice. HPOX also elevated the endothelial cell markers VEGF receptor-2, CD31, and eNOS mRNAs in the ischemic hindlimb, indicating that HPOX increases endothelial cell population and angiogenesis in the ischemic muscle. However, this nanoparticle suppressed expression levels of several inflammatory genes in ischemic tissues. These results suggest that HPOX significantly promotes angiogenesis and blood flow perfusion in the ischemic mouse hindlimb via increased angiogenic inducers, along with suppression of inflammatory gene expression. Thus, HPOX can be used potentially as a noninvasive drug intervention to facilitate therapeutic angiogenesis. 
HPOX; Biodegradable nanoparticle; Angiogenesis; Blood flow; Hindlimb ischemia