ArticleTranslational psychiatry2026
Maraviroc attenuates inflammation-exacerbated cognitive and amyloid pathology in an early-stage Alzheimer's disease mouse model.
Article in Translational psychiatry, 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
Alzheimer's disease (AD) is an age-related neurodegenerative disorder characterized by progressive cognitive decline, and increasing evidence indicates that systemic inflammation can accelerate disease progression. Maraviroc, a CCR5 antagonist approved for the treatment of human immunodeficiency virus (HIV) infection, has shown neuroprotective effects in several neurological contexts, but its role in AD-related pathology remains unclear. In this study, cognitive performance was assessed in 5 × FAD mice using the Y-maze, novel object recognition, novel location recognition, and social discrimination tests. Amyloid-related changes were evaluated by hippocampal APP/Aβ immunoblotting and plaque staining using 6E10 and Thioflavin S. Glial responses were examined by IBA1 and GFAP immunostaining, and inflammatory cytokines were quantified by ELISA. We found that 5 × FAD mice exhibited age-dependent cognitive impairments, with detectable deficits emerging at 3 months of age. Systemic administration of lipopolysaccharide (LPS) further exacerbated cognitive dysfunction, amyloid-related alterations, and neuroinflammatory responses in young 5 × FAD mice. Maraviroc treatment attenuated LPS-associated cognitive impairments, reduced amyloid-related measures, and dampened pro-inflammatory cytokine responses, with a trend toward reduced microglial cell density. Collectively, these findings demonstrate that systemic inflammation accelerates Alzheimer's-like pathology and cognitive decline, and suggest that pharmacological modulation of neuroinflammatory signaling by maraviroc may mitigate inflammation-driven disease exacerbation at early stages. Schematic diagram illustrating the effects of maraviroc on LPS-induced cognitive deficits in 3-month-old 5 × FAD mice. In this model, maraviroc is associated with modulation of glial inflammatory responses, reduced pro-inflammatory cytokine levels, and alleviation of amyloid pathology in the hippocampus, which together coincide with improved cognitive performance. Figure created with BioRender.com.
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