RT Journal Article T1 Neurotoxicity by mercury is not associated with autism spectrum disorders in Spanish children. A1 Gil-Hernandez, Fernando A1 Gomez-Fernandez, Antonio R A1 la Torre-Aguilar, Maria Josede A1 Perez-Navero, Juan L A1 Flores-Rojas, Katherine A1 Martin-Borreguero, Pilar A1 Gil-Campos, Mercedes K1 Autism spectrum disorder K1 Children K1 Hair K1 Mercury K1 Neurotoxicity K1 Urine AB The pathophysiological etiologies related with the development of Autism Spectrum Disorders (ASD) remain controversial. Different authors have studied neurotoxins such as mercury (Hg) and their relationship with ADS. The objective of this study was to assess the levels of Hg in hair in a group of ASD children (chronic exposure) and in urinary excretion (acute exposure), in comparison to a healthy group. A case-control study was conducted in Spanish children. We compared 54 ASD children (aged 2-6) with no other associated pathology to a normally-developing control group (54 subjects). There were no differences in urine (p:0.631) and hair (p:1.000) samples percentages below the limits of detection between the control and the ASD groups, and also between patients in the regression ASD subgroup (AMR) (p:0.08) and the non-regression ASD subgroup (ANMR) (p:0.705). When the analysis was adjusted for age and sex, the differences between Hg levels maintained not significant. There were no correlations between Hg concentrations in the ASD group as a whole (p: 0.739), or when they were subdivided into ASD-AMR (p: 0.739) and ASD-ANMR (p: 0.363). The present study shows no evidence in our geographical area to support an association between mercury neurotoxicity and the etiopathogenesis of ASD. PB BioMed Central YR 2020 FD 2020-01-29 LK http://hdl.handle.net/10668/15097 UL http://hdl.handle.net/10668/15097 LA en NO Gil-Hernández F, Gómez-Fernández AR, la Torre-Aguilar MJ, Pérez-Navero JL, Flores-Rojas K, Martín-Borreguero P, et al. Neurotoxicity by mercury is not associated with autism spectrum disorders in Spanish children. Ital J Pediatr. 2020 Feb 12;46(1):19 DS RISalud RD Jun 1, 2025