Neonatal hypoxia-ischemia induces dysregulated feeding patterns and ethanol consumption that are alleviated by methylphenidate administration in rats.

Autor: Miguel PM; Programa de Pós-Graduação em Neurociências, Instituto de Ciências Básicas da Saúde (ICBS), Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Ciências Morfológicas, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Ludmer Centre for Neuroinformatics and Mental Health, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada. Electronic address: patymiguel@msn.com., Bronauth LP; Departamento de Ciências Morfológicas, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil., Deniz BF; Programa de Pós-Graduação em Neurociências, Instituto de Ciências Básicas da Saúde (ICBS), Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Ciências Morfológicas, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil., Confortim HD; Programa de Pós-Graduação em Neurociências, Instituto de Ciências Básicas da Saúde (ICBS), Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Ciências Morfológicas, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil., de Oliveira BC; Departamento de Ciências Morfológicas, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil., Dalle Molle R; Faculdade Inedi - CESUCA, Cachoeirinha, RS, Brazil., Silveira PP; Ludmer Centre for Neuroinformatics and Mental Health, Douglas Mental Health University Institute, McGill University, Montreal, QC, Canada; Department of Psychiatry, Faculty of Medicine, McGill University, Montreal, QC, Canada., Pereira LO; Programa de Pós-Graduação em Neurociências, Instituto de Ciências Básicas da Saúde (ICBS), Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil; Departamento de Ciências Morfológicas, ICBS, Universidade Federal do Rio Grande do Sul, Porto Alegre, RS, Brazil.
Jazyk: angličtina
Zdroj: Experimental neurology [Exp Neurol] 2022 Jul; Vol. 353, pp. 114071. Date of Electronic Publication: 2022 Apr 07.
DOI: 10.1016/j.expneurol.2022.114071
Abstrakt: Impulsivity, as observed in patients diagnosed with Attention-deficit/hyperactivity disorder (ADHD), can induce dysregulated behaviors such as binge eating and drug addiction. We previously demonstrated that neonatal hypoxia-ischemia (HI) resulted in ADHD-like behaviors in rats and that methylphenidate (MPH) administration (the first therapeutic option for ADHD) reversed these deficits. Here, we aimed at investigating addictive-like behaviors, such as the reward-based feeding behavior (using the BioDAQ monitor) and ethanol consumption (using the IA2BC procedure) in adult animals subjected to neonatal HI and treated with or without MPH. Male Wistar rats were divided into four groups (n = 10-12/group): control saline (CTS), CTMPH, HI saline (HIS) and HIMPH. The HI procedure was conducted at postnatal day (PND) 7 and behavioral analyses between PND 60-90, in which MPH (2.5 mg/kg, i.p.) was administered 30 min prior to each behavioral evaluation (6 sessions in BioDAQ and 12 sessions in the IA2BC protocol). HI animals had a dysregulated feeding intake shortly after eating a small piece of the palatable diet, and MPH reversed this dysregulated pattern. However, when the palatable diet was freely available, MPH stimulated a higher intake of this diet in the first exposure day, and this effect was potentialized in HIMPH rats. Increased ethanol intake was observed in HI rats, and MPH administration alleviated this behavior; contrarily, MPH treatment in control rats induced an increase in ethanol consumption. The present findings give additional support to the relationship between neonatal HI and ADHD but the differential response to MPH in control or HI animals highlights the importance of avoiding indiscriminate use of MPH by healthy individuals.
(Copyright © 2022 Elsevier Inc. All rights reserved.)
Databáze: MEDLINE
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