Sigma-1 receptor regulates HIV-1 and methamphetamine-induced endothelial/pericyte barrier impairment via strain-specific inflammatory responses and mitochondrial dysregulation. - Fattakhov N; Torices S; Becker S; Joseph JA; Schmidlin S; Ngo A; Okoro A; Naranjo O; Toborek M (Journal of neuroinflammation, 2026)