Investigating the neuroprotective effects of strawberry extract against diesel soot-induced motor dysfunction in Drosophila: an in-vivo and in-silico study.
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Abstract
Environmental pollutants including diesel soot, have been known to contribute to neurological disorders. Previous studies highlight the neuroprotective effects of strawberry-derived compounds. This work explores the impacts of diesel soot and strawberry extract in movement-related disorders. In-silico analysis assessed compounds from HPLC/GCMS in the literature of soot and strawberry extract for ADME properties and blood-brain barrier permeability, selecting six compounds and four motor function-related proteins (SOD1, TARDBP, FUS, MAPT) with D. melanogaster orthologs. Homology modeling generated protein structures, molecular docking assessed binding affinities. MLSD examined combined interactions, with RMSD validating accuracy. Docking scores matched neuroprotective controls (quercetin, resveratrol), while differed for negative control (formaldehyde). Phenanthrene and anthocyanin strongly bound to FUS (- 7.60 ± 0.26 kcal/mol, - 7.1 ± 0.26 kcal/mol) and cocoon (- 6.5 ± 0.39 kcal/mol, - 7.23 ± 0.45 kcal/mol). MLSD yielded - 3.00 ± 0.24 kcal/mol and - 3.12 ± 0.11 kcal/mol respectively. In-vivo assays in D. melanogaster exhibited soot impaired movement (p = 0.0006), while strawberry improved it (p = 0.0003) with partial recovery in combined exposure (p = 0.0003). Strawberry enhanced cold stress recovery (p = 0.0048), climbing (p < 0.0001), and vortex recovery (p = 0.0003). One-way ANOVA confirmed significant effects on crawling in males (F (9,20) = 37.67, p < 0.0001, η2 = 0.53) and female flies (F (9,20) = 70.10, p < 0.0001), with normality confirmed by Shapiro-Wilk test (p > 0.05). Toxicant exposure accelerated mortality, while strawberry improved thermotolerance. Combined exposure provided partial protection with minor sex differences. Findings highlight strawberries' neuroprotective role in counteracting diesel soot toxicity, even under combined exposure.
Supplementary information: The online version contains supplementary material available at 10.1007/s40203-025-00344-2.
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