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Tissue hypoxia during ischemic stroke: Adaptive clues from hypoxia-tolerant animal models.
We describe specific physiological and molecular adaptations employed by different animals' models of hypoxia tolerance in aquatic and terrestrial environments. We highlight how these adaptations might provide potential clues on strategies to adapt for the clinical management of tissue hypoxia during conditions such as stroke where oxygen demand fails to match the supply. PMID: 25738761 [PubMed - as supplied by publisher]
Source: Brain Research Bulletin - March 1, 2015 Category: Neurology Authors: Nathaniel TI, Williams-Hernandez A, Hunter LA, Liddy C, Peffley DM, Imeh-Nathaniel A Tags: Brain Res Bull Source Type: research

Silencing lncRNA HOTAIR improves the recovery of neurological function in ischemic stroke via the miR-148a-3p/KLF6 axis
In this study, we explored the effect and potential molecular mechanism of lncRNA homeobox antisense non-coding RNA (HOTAIR) in IS. Permanent middle cerebral artery occlusion (pMCAO) model and oxygen and glucose deprivation (OGD) model were established. HOTAIR was increased in vivo and in vitro models post-ischemic. HOTAIR knockdown promoted neurological function recovery, manifesting in decreased modified neurological severity score, cerebral infarcted area, apoptosis and inflammation, and improved balance ability, spatial learning and memory ability. Silencing HOTAIR also improved the viability of OGD-induced N2a cells, ...
Source: Brain Research Bulletin - August 15, 2021 Category: Neurology Authors: Yiwen Huang Yuanyuan Wang Xiaobin Liu Yingjun Ouyang Source Type: research

Nobiletin protects against cerebral ischemia via activating the p-Akt, p-CREB, BDNF and Bcl-2 pathway and ameliorating BBB permeability in rat.
Abstract There is cumulative evidence that the serine-threonine kinase Akt and its downstream nuclear transcription factor CREB are involved in neuronal survival and protection. The Akt activates and phosphorylates CREB at Ser133, resulting in the up-regulation of pro-survival CREB target genes such as BDNF and Bcl-2. Thus, Akt/CREB signaling pathway may be one propitious target for treatment of ischemic cerebral injury. Nobiletin (NOB) exhibits a wide spectrum of beneficial biological properties including anti-inflammatory, antioxidant, anti-carcinogenic actions and contributes to reverse learning impairment in A...
Source: Brain Research Bulletin - May 2, 2013 Category: Neurology Authors: Zhang L, Zhao H, Zhang X, Chen L, Zhao X, Bai X, Zhang J Tags: Brain Res Bull Source Type: research

Promotion of Momordica Charantia polysaccharides on neural stem cell proliferation by increasing SIRT1 activity after cerebral ischemia/reperfusion in rats
Brain Res Bull. 2021 Feb 26:S0361-9230(21)00058-7. doi: 10.1016/j.brainresbull.2021.02.016. Online ahead of print.ABSTRACTThe deacetylase SIRT1 has been reported to play a critical role in regulating neurogenesis, which may be an adaptive processes contributing to recovery after stroke. Our previous work showed that the antioxidant capacity of Momordica charantia polysaccharides (MCPs) could protect against cerebral ischemia/reperfusion (I/R) after stroke. However, whether the protective effect of MCPs on I/R injury is related to NSCs proliferation remains unclear. In the present study, we designed in vivo and in vitro exp...
Source: Brain Research Bulletin - March 1, 2021 Category: Neurology Authors: Juyun Ma Haidi Fan Heng Cai Zhaoli Hu Xiaoling Zhou Fengying Li Hansen Chen Jiangang Shen Suhua Qi Source Type: research

Diabetes impairs spatial learning and memory and hippocampal neurogenesis via BDNF in rats with transient global ischemia.
Abstract Diabetic conditions worsen the prognosis of stroke. The molecular mechanism underlying the impairment of post-stroke recovery is not very clear. Here, we establish a rat model resembling human cerebral infarction with or without diabetes to determine how diabetes impairs cognitive recovery. Our data show that diabetes inhibits hippocampal BDNF expression and impairs the survival and differentiation of the newborn neural cells in rats with ischemia. Consequently, the rats of diabetic ischemia have a significantly lower score in spatial learning and memory in the Morris water maze test than the non-diabetic...
Source: Brain Research Bulletin - May 23, 2016 Category: Neurology Authors: Han H, Wu LM, Han MX, Yang WM, Wang YX, Fang ZH Tags: Brain Res Bull Source Type: research

β-hydroxybutyrate improves cognitive impairment caused by chronic cerebral hypoperfusion via amelioration of neuroinflammation and blood-brain barrier damage
CONCLUSION: BHB can improve the cognitive impairment caused by CCH. The potential mechanisms of BHB may be through reducing neuroinflammation and protecting BBB.PMID:36577190 | DOI:10.1016/j.brainresbull.2022.12.011
Source: Brain Research Bulletin - December 28, 2022 Category: Neurology Authors: Zhitian Wang Tian Li Miaoyu Du Lei Zhang Linling Xu Hao Song Junjian Zhang Source Type: research