ArticleAddiction biology2026
The Orexin System Modulates Stress-Induced Alcohol Preference and Reinstatement in Adolescents: Bioinformatics and Experimental Evidence.
Article in Addiction biology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Underage drinking has become a global public health concern. One of the major causes of underage drinking is stress. The orexin system has been reported to be involved in both alcohol addiction and stress. However, few studies have examined this system, especially among adolescents. Therefore, we constructed protein-protein interaction (PPI) networks to confirm that orexin receptors are connected to stress- and alcohol dependence-related genes, providing a theoretical basis for our experimental approach. Animal experiments employed the conditioned place preference (CPP), the foot-shock stress model and the enzyme-linked immunosorbent assay (ELISA), to elucidate the role of the orexin system in the stress-induced alcohol addiction-related behaviour among adolescent mice. Our results revealed that there were interactions among orexin system, chronic/acute stress and alcohol dependence related proteins. Otherwise, chronic stress can increase the animals' vulnerability to alcohol addition-related behaviour. Additionally, acute foot-shock can promote alcohol-seeking behaviour reinstatement and facilitate orexin concentrations in brain regions that have been shown to be associated with reward and addiction. Moreover, the inhibition of orexin receptors can attenuate the formation and reinstatement of alcohol addiction-like behaviour among adolescent mice. Collectively, our findings indicate that orexin system may be a pivotal target for preventing stress-induced alcohol addiction and reinstatement among the adolescents.
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