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OBJECTIVE To investigate the role of adventitial vasa vasorum in artery remodeling during the process of pulmonary artery hypertension(PAH),we checked the small heat shock protein 27/25(HSPB1)whether involved in pathological basis of vascular remodeling.METHODS We explored the potential role of HSPB1 interacts with ectopic F1Fo-ATPase in the pulmonary vascular remodeling,investigate its effects on the endothelium cell dynamic,and further reveal its possible molecular mechanisms using hypoxic pulmonary hypertension rat model,transgenic mice and pulmonary adventitial vasa vasorum endothelial cell culture in vitro.RESULTS Our studies have shown that HSPB1 improves adventitial vasa vasorum angiogenesis and remodeling.We found that hypoxia induces-HSPB1 upregulation and HSPB1 interact with ectopic F1Fo-ATPase modulate adventitial vasa vasorum endothelial cell proliferation,migration and tube formation.And the inhibition of HSPB1can reverse the vascular inflammation and fibrosis amazingly.CONCLUSION Adventitial vasa vasorum plays an important role in vascular remodeling,and small heat shock protein 27/25 was involved in a variety of diseases during the development of PAH,which could an efficient therapeutic targets and prevention strategy for PAH clinical.
OBJECTIVE To investigate the role of adventitial vasa vasorum in artery remodeling during the process of pulmonary artery hypertension (PAH), we checked the small heat shock protein 27/25 (HSPB1) whether involved in pathological basis of vascular remodeling. METHODS We explored the potential role of HSPB1 interacts with the ectopic F1Fo-ATPase in the pulmonary vocaloid dynamic, and further reveal its possible molecular mechanisms using hypoxic pulmonary hypertension rat model, transgenic mice and pulmonary adventitial vasa vasorum endothelial cell culture in vitro .RESULTS Our studies have shown that HSPB1 improves adventitial vasa vasorum angiogenesis and remodeling. We found that hypoxia induces-HSPB1 upregulation and HSPB1 interact with ectopic F1Fo-ATPase modulate adventitial vasa vasorum endothelial cell proliferation, migration and tube formation. And the inhibition of HSPB1can reverse the vascular inflammation and fibrosis amazingly. CO NCLUSION Adventitial vasa vasorum plays an important role in vascular remodeling, and small heat shock protein 27/25 was involved in a variety of diseases during the development of PAH, which could an efficient therapeutic targets and prevention strategy for PAH clinical.