ArticleAlcohol (Fayetteville, N.Y.)2026
Specific inhibition of p38α MAPK dampens neuroinflammation during acute alcohol withdrawal in mouse BV2 microglial cell line and rat organotypic hippocampal slice cultures.
Article in Alcohol (Fayetteville, N.Y.), 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
Neuroinflammation is implicated in anxiety and negative affect in alcohol withdrawal, potentially contributing to relapse. The mitogen-activated protein kinase p38α (p38) is a critical driver of neuroinflammation in such excitatory neural contexts, and its inhibition reduces neuroinflammatory cytokine production in the context of various insults generally corresponding with improved cellular and synaptic health. Although heretofore unexamined, we hypothesized that inhibition of p38 by small-molecule MW150 would reduce neuroinflammation during the acute alcohol withdrawal period. Immortalized mouse BV2 and post-natal day 8 rat organotypic hippocampal slice cultures received 50mM ethanol in media for 24 h followed by 24 h withdrawal, or for 48 h continuously, with administration of 5 μM MW150 or saline for the final 24 h of treatment. Control tissue never received ethanol. Levels of cytokines in the culture media were analyzed after 48 h by MesoScale ELISA assays. Elevated CXCL1 and TNFα levels were ameliorated by MW150 during ethanol withdrawal in culture media from BV2 and female OHSC, respectively. Further, MW150 reduced TNFα, but increased IL6, across all conditions in the BV2 microglia. Preliminary evidence suggests that p38 inhibition during early ethanol withdrawal in vitro reduces select inflammatory cytokines. Given that MW150 is presently in clinical trials for neuroinflammation in Alzheimer's disease, its preclinical validation for use in alcohol withdrawal in vivo is crucial to determine its feasibility to modulate neuroinflammation and problem drinking in humans.
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