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- Title
Maternal Diet Influences the Reinstatement of Cocaine-Seeking Behavior and the Expression of Melanocortin-4 Receptors in Female Offspring of Rats.
- Authors
Gawliński, Dawid; Gawlińska, Kinga; Frankowska, Małgorzata; Filip, Małgorzata
- Abstract
Recent studies have emphasized the role of the maternal diet in the development of mental disorders in offspring. Substance use disorder is a major global health and economic burden. Therefore, the search for predisposing factors for the development of this disease can contribute to reducing the health and social damage associated with addiction. In this study, we focused on the impact of the maternal diet on changes in melanocortin-4 (MC-4) receptors as well as on behavioral changes related to cocaine addiction. Rat dams consumed a high-fat diet (HFD), high-sugar diet (HSD, rich in sucrose), or mixed diet (MD) during pregnancy and lactation. Using an intravenous cocaine self-administration model, the susceptibility of female offspring to cocaine reward and cocaine-seeking propensities was evaluated. In addition, the level of MC-4 receptors in the rat brain structures related to cocaine reward and relapse was assessed. Modified maternal diets did not affect cocaine self-administration in offspring. However, the maternal HSD enhanced cocaine-seeking behavior in female offspring. In addition, we observed that the maternal HSD and MD led to increased expression of MC-4 receptors in the nucleus accumbens, while increased MC-4 receptor levels in the dorsal striatum were observed after exposure to the maternal HSD and HFD. Taken together, it can be concluded that a maternal HSD is an important factor that triggers cocaine-seeking behavior in female offspring and the expression of MC-4 receptors.
- Subjects
SUBSTANCE abuse risk factors; COMPULSIVE behavior -- Risk factors; ANIMAL experimentation; BIOLOGICAL models; CELL receptors; COCAINE; DIET; CARBOHYDRATE content of food; FAT content of food; GENE expression; LACTATION; RATS; RISK assessment; DIETARY sucrose; CHILDREN; PREGNANCY
- Publication
Nutrients, 2020, Vol 12, Issue 5, p1462
- ISSN
2072-6643
- Publication type
Article
- DOI
10.3390/nu12051462