Article (Scientific journals)
Differential Correlation of Serum BDNF and microRNA content in rats with rapid or late onset of heavy alcohol use
Ehinger, Yann; Phamluong, Khanhky; Darvesky, David et al.
2020In Addiction Biology
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Keywords :
BDNF; alcohol; miRNA
Abstract :
[en] Heavy alcohol use reduces the levels of the brain-derived neurotrophic factor (BDNF) in the prefrontal cortex of rodents through the upregulation of microRNAs (miRs) targeting BDNF mRNA. In humans, an inverse correlation exists between circulating blood levels of BDNF and the severity of psychiatric disorders including alcohol abuse. Here, we set out to determine whether a history of heavy alcohol use produces comparable alterations in the blood of rats. We used an intermittent access to 20% alcohol using the two-bottle choice paradigm (IA20%2BC) and measured circulating levels of BDNF protein and miRs targeting BDNF in the serum of Long-Evans rats before and after 8 weeks of excessive alcohol intake. We observed that the drinking profile of heavy alcohol users is not unified, whereas 70% of the rats gradually escalate their alcohol intake (late onset), and 30% of alcohol users exhibit a very rapid onset of drinking (rapid onset). We found that serum BDNF levels are negatively correlated with alcohol intake in both rapid onset and late onset rats. In contrast, increased expression of the miRs targeting BDNF, miR30a-5p, miR-195-5p, miR191-5p and miR206-3p, was detected only in the rapid onset rats. Finally, we report that the alcohol-dependent molecular changes are not due to alterations in platelet number. Together, these data suggest that rats exhibit both late and rapid onset of alcohol intake. We further show that heavy alcohol use produces comparable changes in BDNF protein levels in both groups. However, circulating microRNAs are responsive to alcohol only in the rapid onset rats.
Research center :
Department of Neurology, University of California, San Francisco, San Francisco, California
Research Center, Montreal Heart Institute, Montreal, Quebec, Canada
Medication Development Program, National Institute on Drug Abuse Intramural Research Program, National Institutes of Health, Baltimore, Maryland
National Institute on Alcohol Abuse and Alcoholism Division of Intramural Clinical and Biological Research, National Institutes of Health, Bethesda, Maryland.
Center for Alcohol and Addiction Studies, Department of Behavioral and Social Sciences, Brown University, Providence, Rhode Island.
Faculty of Pharmacy, University of Montreal, Montreal, Quebec, Canada
Giga-Neurosciences - ULiège
Disciplines :
Neurology
Author, co-author :
Ehinger, Yann
Phamluong, Khanhky
Darvesky, David
Welman, Melanie
Moffat, Jeffrey
Sakhai, Samuel
Whiteley, Ellanor
Berger, Anthony
Laguesse, Sophie  ;  Université de Liège - ULiège > Stem Cells-Molecular Regulation of Neurogenesis
Farokhnia, Mehdi
Leggio, Lorenzo
Lordkipanidze, Marie
Ron, Dorit
More authors (3 more) Less
Language :
English
Title :
Differential Correlation of Serum BDNF and microRNA content in rats with rapid or late onset of heavy alcohol use
Publication date :
05 March 2020
Journal title :
Addiction Biology
ISSN :
1355-6215
eISSN :
1369-1600
Publisher :
Wiley-Blackwell, United States
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
NIH - National Institutes of Health [US-MD]
Available on ORBi :
since 07 May 2020

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