Differences in the Interleukin Profiles in Inattentive ADHD Prepubertal Children Are Probably Related to Conduct Disorder Comorbidity González-Villén, Raquel Fernández López, María Luisa Checa Ros, Ana Tortosa-Pinto, Pilar Aguado-Rivas, Raquel Garre Morata, Laura Acuña Castroviejo, Darío Molina Carballo, Antonio ADHD prepubertal children attention deficit Inflammatory cytokines are involved in attention deficit hyperactivity disorder (ADHD), a highly prevalent neurodevelopmental disorder. To quantify the baseline levels of pro- and antiinflammatory cytokines and their changes after methylphenidate (MPH), a total of 31 prepubertal children with ADHD were recruited and subclassified into only two ADHD presentations—ADHD attention deficit (n = 13) or ADHD combined (n = 18). The children were also screened for oppositional defiant conduct disorder (ODCD) and anxiety disorder. Blood samples were drawn at 09:00 and after 4.63 ± 1.87 months of treatment. Four pro-inflammatory cytokines (interleukin-1beta (IL-1β), IL-5, IL-6, tumor necrosis factor-alpha (TNF-α)) and three anti-inflammatory cytokines (IL-4, IL-10, IL-13) were measured using a Luminex® assay. For statistics, a factorial analysiswas performed in Stata 15.1. Overall, there were no statistically significant differences in the interleukin (IL) values induced by treatment. When grouped by presentation, the differences were present almost exclusively in ADHD-AD, usually with a profile opposite to that observed in ADHD-C, and with interactions between comorbid factors, with IL-1β (p = 0.01) and IL-13 (p = 0.006) being the ones reaching the greatest statistical significance. These differences are probably related to the ODCD factor, and they disappear after treatment. In conclusion, the changes observed in cytokine levels in prepubertal children only in the ADHD-AD presentation are probably related to comorbidities (specifically ODCD) and are mitigated after treatment. 2024-09-17T08:35:27Z 2024-09-17T08:35:27Z 2024-08-09 journal article González Villén, R. et. al. Biomedicines 2024, 12, 1818. [https://doi.org/10.3390/biomedicines12081818] https://hdl.handle.net/10481/94593 10.3390/biomedicines12081818 eng http://creativecommons.org/licenses/by/4.0/ open access Atribución 4.0 Internacional MDPI