ArticleJournal of biosciences2026
Delta-9-tetrahydrocannabinol delineates D-galactose and aluminium chloride-induced cognitive dysfunction and neurodegeneration in the hippocampus of the Wistar rat model.
Article in Journal of biosciences, 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 a neurodegenerative disorder characterised by neurodegeneration and a decline in cognition and memory. D-galactose (D-gal) and aluminium chloride (AlCl3) have been used to induce cognitive deterioration in rat models that mimic the alterations observed in AD. This study assessed the neurotherapeutic effect of Δ9-tetrahydrocannabinol (Δ9THC) on cognitive abilities, brain morphology, neurogenesis activity and neuropathological markers in Wistar rats induced by D-gal plus AlCl3. Male albino Wistar rats received D-gal (60 mg/kg, intraperitoneally) and AlCl3 (200 mg/kg, orally) daily for 10 weeks. The rats were then treated with increasing concentrations of Δ9THC (0.75, 1.5 and 3.0 mg/kg) for 28 days. Cognitive performance was evaluated using the novel object recognition and modified elevated plus maze tests. Dentate gyrus viable granule cells, neurogenesis markers, amyloid precursor protein and phosphorylated tau (p‑tau Thr231) were assessed histologically and molecularly. Δ9THC treatment improved cognitive performance, prevented granule cell loss in the dentate gyrus, increased neurogenesis-related markers (GFAP+, DCX+, calbindin+ and NeuN immunoreactivity), and reduced amyloid precursor protein and p‑tau Thr231 expression. These findings suggest that Δ9THC possesses promising therapeutic potential against Alzheimer's disease.
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