RT Journal Article T1 Preclinical evidence of cannabis-induced oxidative stress: A systematic review and meta-analysis A1 Sanz Pérez, Amadeo A1 González Burgos, Elena María A1 Pérez Pérez, Teresa AB Although cannabis exposure is linked to oxidative stress, no systematic analysis has evaluated its effects on ROS production, lipid peroxidation, and antioxidant defenses. We conducted a systematic review and meta-analysis of recent in vivo and in vitro studies. Of 9775 records identified across six databases, 51 met inclusion criteria and 49 were quantitatively analyzed (23 in vitro, 26 in vivo).In vitro studies exposed cell lines to phytocannabinoids and measured ROS, MDA, and GSH. In vivo studies included 1258 animals, mainly rats (52.7%) and mice (27%), treated with THC, CBD, THC + CBD, crude extracts, or synthetic cannabinoids via intraperitoneal, oral, or aqueous routes. Assessed biomarkers included MDA/TBARS, CAT, SOD, GSH, and GPx.Meta-analyses showed cannabis exposure was associated with ROS production in vitro (SMD = 0.04, 95% CI 0.02–0.06), a small, context-dependent effect, and in vivo (SMD = 0.93, 95% CI 0.10–1.75), along with increased lipid peroxidation in both systems. Cannabis reduced GSH and antioxidant enzymes, decreasing GR and CAT in vitro and SOD and GPx in vivo.Overall, cannabinoid exposure was associated with changes in oxidative stress markers in preclinical models. These findings suggest a possible biological pathway but do not provide definitive evidence of a consistent effect. PB Elsevier YR 2026 FD 2026 LK https://hdl.handle.net/20.500.14352/134158 UL https://hdl.handle.net/20.500.14352/134158 LA eng NO Sanz-Pérez, A., et al. «Preclinical Evidence of Cannabis-Induced Oxidative Stress: A Systematic Review and Meta-Analysis». Regulatory Toxicology and Pharmacology, vol. 168, junio de 2026, p. 106067. DOI.org (Crossref), https://doi.org/10.1016/j.yrtph.2026.106067 NO Ministerio de Sanidad (España) DS Docta Complutense RD 7 abr 2026