RT Journal Article T1 Sex Differences in Plasma Lysophosphatidic Acid Species in Patients with Alcohol and Cocaine Use Disorders. A1 Flores-López, María A1 García-Marchena, Nuria A1 Araos, Pedro A1 Requena-Ocaña, Nerea A1 Porras-Perales, Oscar A1 Torres-Galván, Sandra A1 Suarez, Juan A1 Pizarro, Nieves A1 de la Torre, Rafael A1 Rubio, Gabriel A1 Ruiz-Ruiz, Juan Jesús A1 Rodríguez de Fonseca, Fernando A1 Serrano, Antonia A1 Pavón-Morón, Francisco Javier K1 alcohol K1 biomarker K1 cocaine K1 lysophosphatidic acid K1 sex K1 substance use disorder AB Preclinical evidence suggests a main role of lysophosphatidic acid (LPA) signaling in drug addiction. Recently, we reported alterations in the plasma concentrations of LPA species in patients with alcohol use disorder (AUD). As there are sex differences in drug addiction, the main aim of the present study was to investigate whether relevant LPA species (16:0-LPA, 18:0-LPA, 18:1-LPA, 18:2-LPA and 20:4-LPA) were associated with sex and/or substance use disorder (SUD). This exploratory study was conducted in 214 abstinent patients with lifetime SUD, and 91 healthy control subjects. The SUD group was divided according to the diagnosis of AUD and/or cocaine use disorder (CUD). Participants were clinically assessed, and plasma samples were collected to determine LPA species and total LPA. We found that LPA concentrations were significantly affected by sex, and women showed higher concentrations than men. In addition, there were significantly lower 16:0-LPA, 18:2-LPA and total LPA concentrations in patients with SUD than in controls. Namely, patients with CUD and AUD + CUD showed lower LPA concentrations than controls or patients with AUD. In conclusion, our data suggest that LPA species could be potential biomarkers for SUD in women and men, which could contribute to a better stratification of these patients in treatment programs. SN 2076-3425 YR 2022 FD 2022-04-30 LK http://hdl.handle.net/10668/20854 UL http://hdl.handle.net/10668/20854 LA en DS RISalud RD Apr 9, 2025