ArticleNan fang yi ke da xue xue bao = Journal of Southern Medical University2026
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Article in Nan fang yi ke da xue xue bao = Journal of Southern Medical University, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
objectivesTo investigate the mechanism that mediates the neuroprotective effects of
methodsAdult SD rats were randomized into Sham operation, PSCI model, TTM, rapamycin (an autophagy inducer), 3-methyladenine (an autophagy inhibitor), and TTM+3-MA groups, and rat models of cognitive impairment were established using a modified thread occlusion method. Cognitive function of the rats was assessed using Morris water maze test. Histopathological changes, neuronal apoptosis, dendritic spines, and protein expressions of FAM134B, LC3, ATG5, P62, GRP78, Bax, Bcl-2, IL-10, IL-1β, and TNF-α were evaluated using HE, Nissl, TUNEL, Golgi staining, immunohistochemistry, immunofluorescence staining, and Western blotting.
resultsCompared with the sham-operated rats, the rat models of PSCI showed significantly prolonged escape latency, reduced target quadrant time and platform crossings, severe hippocampal damage, increased ATG5 and GRP78 expression, elevated apoptosis, increased IL-1β, TNF-α, Bax, GRP78, and P62 expressions, and decreased IL-10, Bcl-2, and LC3 expressions, with slightly increased FAM134B-LC3 and calnexin-LC3 co-localization. Compared with those in the model group, the rats receiving TTM treatment showed significantly shortened escape latency, increased target quadrant time and platform crossings, increased ATG5 and dendritic spines, decreased GRP78 expression, enhanced FAM134B-LC3 and calnexin-LC3 co-localization, reduced IL-1β, TNF-α, Bax, GRP78, and P62 expressions, and increased FAM134B, ATG5, LC3, IL-10, and Bcl-2 expressions; the rats treated with 3-MA showed the opposite changes.
conclusionsExcessive ER stress is activated early after stroke, shifting from adaptive to pro-apoptotic signaling, with insufficient ER-phagy flux. TTM modulates ER-phagy, alleviates ERS, reduces neuroinflammation and apoptosis, protects dendritic spines, and improves cognitive function in rats with PSCI.
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