PMID- 26537366 OWN - NLM STAT- MEDLINE DCOM- 20160923 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 5 DP - 2015 Nov 5 TI - Wnt/beta-catenin coupled with HIF-1alpha/VEGF signaling pathways involved in galangin neurovascular unit protection from focal cerebral ischemia. PG - 16151 LID - 10.1038/srep16151 [doi] LID - 16151 AB - Microenvironmental regulation has become a promising strategy for complex disease treatment. The neurovascular unit (NVU), as the key structural basis to maintain an optimal brain microenvironment, has emerged as a new paradigm to understand the pathology of stroke. In this study, we investigated the effects of galangin, a natural flavonoid isolated from the rhizome of Alpina officinarum Hance, on NVU microenvironment improvement and associated signal pathways in rats impaired by middle cerebral artery occlusion (MCAO). Galangin ameliorated neurological scores, cerebral infarct volume and cerebral edema and reduced the concentration of Evans blue (EB) in brain tissue. NVU ultrastructural changes were also improved by galangin. RT-PCR and western blot revealed that galangin protected NVUs through the Wnt/beta-catenin pathway coupled with HIF-1alpha and vascular endothelial growth factor (VEGF). VEGF and beta-catenin could be the key nodes of these two coupled pathways. In conclusion, Galangin might function as an anti-ischemic stroke drug by improving the microenvironment of NVUs. FAU - Wu, Chuanhong AU - Wu C AD - Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China. AD - State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078, China. FAU - Chen, Jianxin AU - Chen J AD - Beijing University of Chinese Medicine, Beijing 100029, China. FAU - Chen, Chang AU - Chen C AD - Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China. FAU - Wang, Wei AU - Wang W AD - Beijing University of Chinese Medicine, Beijing 100029, China. FAU - Wen, Limei AU - Wen L AD - The first Affiliated Hospital of Xinjiang Medical University, Xinjiang, 830054, China. FAU - Gao, Kuo AU - Gao K AD - Beijing University of Chinese Medicine, Beijing 100029, China. FAU - Chen, Xiuping AU - Chen X AD - State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences, University of Macau, Macao, 999078, China. FAU - Xiong, Sihuai AU - Xiong S AD - Beijing No.166 High School, Beijing 100006, China. FAU - Zhao, Huihui AU - Zhao H AD - Beijing University of Chinese Medicine, Beijing 100029, China. FAU - Li, Shaojing AU - Li S AD - Institute of Chinese Materia Medica, China Academy of Chinese Medical Sciences, Beijing 100700, China. AD - Beijing University of Chinese Medicine, Beijing 100029, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20151105 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 RN - 0 (Flavonoids) RN - 0 (Hif1a protein, rat) RN - 0 (Hypoxia-Inducible Factor 1, alpha Subunit) RN - 0 (Neuroprotective Agents) RN - 0 (Plant Extracts) RN - 0 (Vascular Endothelial Growth Factor A) RN - 0 (beta Catenin) RN - 0 (vascular endothelial growth factor A, rat) RN - 142FWE6ECS (galangin) SB - IM MH - Animals MH - Brain/drug effects/metabolism MH - Brain Ischemia/*drug therapy/metabolism MH - Flavonoids/*pharmacology MH - Hypoxia-Inducible Factor 1, alpha Subunit/*metabolism MH - Infarction, Middle Cerebral Artery/drug therapy/metabolism MH - Male MH - Neuroprotective Agents/*pharmacology MH - Plant Extracts/pharmacology MH - Rats MH - Rats, Sprague-Dawley MH - Signal Transduction/drug effects MH - Vascular Endothelial Growth Factor A/*metabolism MH - Wnt Signaling Pathway/*drug effects MH - beta Catenin/*metabolism PMC - PMC4633613 EDAT- 2015/11/06 06:00 MHDA- 2016/09/24 06:00 PMCR- 2015/11/05 CRDT- 2015/11/06 06:00 PHST- 2015/01/09 00:00 [received] PHST- 2015/06/17 00:00 [accepted] PHST- 2015/11/06 06:00 [entrez] PHST- 2015/11/06 06:00 [pubmed] PHST- 2016/09/24 06:00 [medline] PHST- 2015/11/05 00:00 [pmc-release] AID - srep16151 [pii] AID - 10.1038/srep16151 [doi] PST - epublish SO - Sci Rep. 2015 Nov 5;5:16151. doi: 10.1038/srep16151.