The effect of hyperbaric oxygen on intracephalic angiogenesis in rats with intracerebral hemorrhage.
Healthy SD rats were randomly divided into 3 groups as sham operation (group A), ICH (group B), and HBO2 (group C). The behavioral change and angiogenesis in brain tissue of rats in each group were observed. The protein expression of PCNA, vWF, HIF1-α, and VEGF in rat brain was measured by immunohistochemistry, while the mRNA expression level of HIF1-α and VEGF was determined using quantitative real-time PCR. This study has investigated the effect of HBO2 on intracephalic angiogenesis in rats with intracerebral hemorrhage (ICH). There were significant differences in behavior score between HBO2 and ICH groups at 14, 21, and 28 days. A large number of vessel-like structures and microvessels were observed in perihematomal brain tissues in HBO2 group. There were significant differences in HIF1-α and VEGF protein and HIF1-α mRNA level between HBO2 and ICH groups at 14, 21, and 28 days; at 7, 14, 21, and 28 days, the differences in PCNA and vWF protein expression between the 2 groups were statistically significant. At 21 and 28 days, the expression levels of VEGF mRNA in the 2 groups differed significantly from each other. Our results indicate that HBO2 can significantly promote the expression of HIF1-α and VEGF at both mRNA and protein levels in rats with ICH, increase the protein expression of both PCNA and vWF, promote the formation of new blood vessels, and promote the recovery of behavioral ability, hence resulting in a rapid rehabilitation.
Department of Hyperbaric Oxygen, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China. Electronic address: 13873151139@163.com.
Zheng-Rong
ZR
Peng
Department of Hyperbaric Oxygen, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China. Electronic address: 42854525@qq.com.
A-Li
AL
Yang
Institute of Neurology, Xiangya Hospital of Central South University, Changsha 410008, Hunan Province, China. Electronic address: xyyqd@hotmail.com.
Qi-Dong
QD
Yang
D000818:Animals; D001921:Brain / Q000098:blood supply / Q000378:metabolism / Q000502:physiology; D002543:Cerebral Hemorrhage / Q000503:physiopathology* / Q000628:therapy*; D015870:Gene Expression / Q000502:physiology; D006931:Hyperbaric Oxygenation; D051795:Hypoxia-Inducible Factor 1, alpha Subunit / Q000096:biosynthesis; D018919:Neovascularization, Physiologic / Q000502:physiology*; D018809:Proliferating Cell Nuclear Antigen / Q000096:biosynthesis; D051381:Rats; D020127:Recovery of Function / Q000502:physiology; D013997:Time Factors; D042461:Vascular Endothelial Growth Factor A / Q000096:biosynthesis; D014841:von Willebrand Factor / Q000096:biosynthesis
C497444:Hif1a protein, rat; D051795:Hypoxia-Inducible Factor 1, alpha Subunit; D018809:Proliferating Cell Nuclear Antigen; D042461:Vascular Endothelial Growth Factor A; C467498:vascular endothelial growth factor A, rat; D014841:von Willebrand Factor
Angiogenesis; Behavior score; Hyperbaric oxygen (HBO(2)); Intracerebral hemorrhage (ICH)