Rationale: Intermittent footshock stress reliably reinstates extinguished alcohol-taking behavior in drug-free rats, but the neurochemical events involved in this effect are not known.
Objective: We studied here whether two main modulators of stress responses, corticotropin-releasing factor (CRF) and corticosterone, are involved in reinstatement of alcohol seeking induced by the intermittent footshock stressor. METHDOS: Rats were given alcohol in a two-bottle choice procedure (water versus alcohol) for 30 days and were then trained for 60 min per day to press a lever for alcohol (12% w/v) for 24-30 days in operant conditioning chambers. After stable drug-taking behavior was obtained, lever pressing for alcohol was extinguished by terminating drug delivery for 5-8 days. Reinstatement of alcohol seeking was then determined after exposure to intermittent footshock (0.8 mA; 10 min) in different groups of rats that were pretreated with CRF receptor antagonists or underwent adrenalectomy (ADX) to remove endogenous corticosterone from the body.
Results: The CRF receptor antagonists, d-phe-CRF (0.3 or 1.0 microg; ICV) and CP-154,526 (15, 30 or 45 mg/kg; IP) attenuated footshock-induced reinstatement of alcohol seeking in a dose dependent manner. In contrast, the removal of circulating corticosterone by ADX had no effect on footshock stress-induced reinstatement of alcohol-taking behavior. In addition, the prevention of the footshock-induced rise in corticosterone while maintaining basal levels of the hormone by providing adrenalectomized rats with corticosterone pellets (50 mg/kg per day), had no effect on stress-induced reinstatement.
Conclusions: These data suggest that CRF contributes to stress-induced relapse to alcohol seeking via its actions on extra-hypothalamic sites. The present data, and previous data with heroin- and cocaine-trained rats, point to a general role of CRF in relapse to drugs induced by stressors.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1007/s002130000411 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
BDNF plays a crucial role in shaping the structure and function of neurons. BDNF signaling in the dorsolateral striatum (DLS) is part of an endogenous pathway that protects against the development of alcohol use disorder (AUD). Dysregulation of BDNF levels in the cortex or dysfunction of BDNF/TrkB signaling in the DLS results in the escalation of alcohol drinking and compulsive alcohol use.
View Article and Find Full Text PDFK2 channel positive modulation reduces alcohol drinking in female C57BL/6J mice.
Alcohol
January 2025
Department of Neuroscience, Charleston Alcohol Research Center, Medical University of South Carolina, 70 President Street, Drug Discovery Building, Charleston, SC 29425. Electronic address:
Although men have historically exhibited higher levels of alcohol use disorder (AUD) diagnosis, the gap between men and women has been diminishing quickly. Preclinical screening for pharmacological treatments for AUD has typically focused solely on males, ignoring the possibility that males and females may differ mechanistically for the same behavioral phenotype. To ensure the efficacy of treatment targets across the sexes, it is crucial to study the pharmacological effects of AUD treatments in males and females.
View Article and Find Full Text PDFConstruction of a Library of Fatty Acid Esters of Hydroxy Fatty Acids.
Molecules
January 2025
Department of Chemistry, National and Kapodistrian University of Athens, 15771 Athens, Greece.
Fatty Acid Esters of Hydroxy Fatty Acids (FAHFAs) have emerged as extraordinary bioactive lipids, exhibiting diverse bioactivities, from the enhancement of insulin secretion and the optimization of blood glucose absorption to anti-inflammatory effects. The intricate nature of FAHFAs' structure reflects a synthetic challenge that requires the strategic introduction of ester bonds along the hydroxy fatty acid chain. Our research seeks to create an effective methodology for generating varied FAHFA derivatives.
View Article and Find Full Text PDFAddressing Gambling Harm to affected others: A scoping review (part II: Coping, assessment and treatment).
Clin Psychol Rev
January 2025
Department of Psychology, University of Calgary, Canada.
Public health definitions of gambling-related harm include risks to family members and friends. This scoping review broadly aims to identify recent research on addressing gambling harm to adult affected others, focusing on prevalence, socio-demographic profiles, gambling profiles, and harm (Part I); and coping strategies, assessment, and treatment (Part II). A systematic search of electronic databases identified 121 studies published from 2000, with 82 focusing on coping strategies (22.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!