Substance abuse disorders are linked to alteration of circadian rhythms, although the molecular and neuronal pathways implicated have not been fully elucidated. Addictive drugs, such as cocaine, induce a rapid increase of dopamine levels in the brain. Here, we show that acute administration of cocaine triggers reprogramming in circadian gene expression in the striatum, an area involved in psychomotor and rewarding effects of drugs. This process involves the activation of peroxisome protein activator receptor gamma (PPARγ), a nuclear receptor involved in inflammatory responses. PPARγ reprogramming is altered in mice with cell-specific ablation of the dopamine D2 receptor (D2R) in the striatal medium spiny neurons (MSNs) (iMSN-D2RKO). Administration of a specific PPARγ agonist in iMSN-D2RKO mice elicits substantial rescue of cocaine-dependent control of circadian genes. These findings have potential implications for development of strategies to treat substance abuse disorders.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7477550 | PMC |
| http://dx.doi.org/10.1038/s41467-020-18200-6 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Prefrontal 5α-reductase 2 mediates male-specific acute stress response.
Sci Adv
January 2025
Department of Pharmacology and Toxicology, College of Pharmacy, University of Utah, Salt Lake City, UT, USA.
A key response to acute stress is the increased brain synthesis of the neurosteroid allopregnanolone (AP). Although the rate-limiting step of this reaction is catalyzed by 5α-reductase (5αR), the role of its two primary isoenzymes, 5αR1 and 5αR2, in stress reactivity remains unclear. Here, we found that acute stress led to increased levels of 5αR2, but not 5αR1, in the medial prefrontal cortex (mPFC) of male, but not female, rats.
View Article and Find Full Text PDFImpact of high body mass index on hepatocellular carcinoma risk in chronic liver disease: A population-based prospective cohort study.
PLoS One
January 2025
Department of Preventive Medicine and Public Health, Catholic Kwandong University College of Medicine, Gangneung, South Korea.
Background And Aims: We investigated associations between body mass index (BMI) and hepatocellular carcinoma (HCC) in patients with hepatitis B (HBV) C (HCV) virus infection, alcoholic liver disease (ALD), non-alcoholic fatty liver disease (NAFLD), and liver cirrhosis (LC).
Methods: We followed 350,608 Korean patients with liver disease who underwent routine health examinations from 2003-2006 until December 2018 via national hospital discharge records. Multivariable adjusted hazard ratios (HRs) per 5-kg/m2 BMI increase (BMI ≥25 kg/m2) for HCC risk were calculated using Cox models.
Sexual trauma and compulsive sexual behavior in young men and women: A network analysis involving two samples.
J Behav Addict
January 2025
10Department of Psychology, University of Nevada Las Vegas, Las Vegas, NV, USA.
Background And Aims: Sexual trauma is associated with multiple negative health and social conditions, including compulsive sexual behavior. The present study examined network structures involving sexual trauma history, psychological distress (defined as depression and/or anxiety symptoms), substance use, transactional sex, and compulsive sexual behavior. Prior network analysis work in this area is limited.
View Article and Find Full Text PDFEye reactions under the influence of drugs of abuse as measured by smartphones: a controlled clinical study in healthy volunteers.
Front Neurosci
January 2025
Kontigo Care AB, Uppsala, Sweden.
Background: It is known that illicit and prescribed drugs impact pupil size, eye movement and function. Still, comprehensive quantitative evaluations under known ambient light conditions are lacking, when smartphones are used for monitoring.
Methods: In this clinical study (NCT05731999), four medicinal products with addiction risks were administered to 48 subjects (18-70 years old, all with informed consent, 12 subjects per drug).
Elafibranor: A promising therapeutic approach for liver fibrosis and gut barrier dysfunction in alcohol-associated liver disease.
World J Gastroenterol
January 2025
Department of Biochemistry, School of Medicine, College of Medicine, China Medical University, Taichung 404328, Taiwan.
This article discusses the recent study written by Koizumi . Alcohol-associated liver disease (ALD) is a major cause of liver-related morbidity and mortality, which is driven by complex mechanisms, including lipid accumulation, apoptosis, and inflammatory responses exacerbated by gut barrier dysfunction. The study explored the therapeutic potential of elafibranor, a dual peroxisome proliferator-activated receptor alpha/delta agonist.
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!