PMID- 33767622 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20210925 IS - 1663-9812 (Print) IS - 1663-9812 (Electronic) IS - 1663-9812 (Linking) VI - 12 DP - 2021 TI - Chronic Voluntary Alcohol Drinking Causes Anxiety-like Behavior, Thiamine Deficiency, and Brain Damage of Female Crossed High Alcohol Preferring Mice. PG - 614396 LID - 10.3389/fphar.2021.614396 [doi] LID - 614396 AB - The central nervous system is vulnerable to chronic alcohol abuse, and alcohol dependence is a chronically relapsing disorder which causes a variety of physical and mental disorders. Appropriate animal models are important for investigating the underlying cellular and molecular mechanisms. The crossed High Alcohol Preferring mice prefer alcohol to water when given free access. In the present study, we used female cHAP mice as a model of chronic voluntary drinking to evaluate the effects of alcohol on neurobehavioral and neuropathological changes. The female cHAP mice had free-choice access to 10% ethanol and water, while control mice had access to water alone at the age of 60-day-old. The mice were exposed to alcohol for 7 months then subjected to neurobehavioral tests including open field (OF), elevated plus maze (EPM), and Morris water maze (MWM). Results from OF and EPM tests suggested that chronic voluntary drinking caused anxiety-like behaviors. After behavior tests, mice were sacrificed, and brain tissues were processed for biochemical analyses. Alcohol altered the levels of several neurotransmitters and neurotrophic factors in the brain including gamma-Aminobutyric acid (GABA), corticotropin-releasing factor, cAMP response element-binding protein (CREB) and brain-derived neurotrophic factor. Alcohol increased the expression of neuroinflammation markers including interleukin-6 (IL-6), tumor necrosis factor alpha (TNF-alpha), monocyte chemoattractant protein-1 (MCP-1) and C-C chemokine receptor 2 (CCR2). Alcohol also induced cleaved caspase-3 and glial fibrillary acidic protein, indicative of neurodegeneration and gliosis. In addition, alcohol inhibited the expression of thiamine transporters in the brain and reduced thiamine levels in the blood. Alcohol also caused oxidative stress and endoplasmic reticulum (ER) stress, and stimulated neurogenesis. CI - Copyright (c) 2021 Xu, Li, Liu, Wen, Xu, Frank, Chen, Zhu, Grahame and Luo. FAU - Xu, Hong AU - Xu H AD - Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, KY, United States. FAU - Li, Hui AU - Li H AD - Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, United States. FAU - Liu, Dexiang AU - Liu D AD - Department of Medical Psychology, Shandong University School of Medicine, Jinan, China. FAU - Wen, Wen AU - Wen W AD - Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, United States. FAU - Xu, Mei AU - Xu M AD - Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, KY, United States. FAU - Frank, Jacqueline A AU - Frank JA AD - Department of Pharmacology and Nutritional Sciences, University of Kentucky College of Medicine, Lexington, KY, United States. FAU - Chen, Jing AU - Chen J AD - Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY, United States. FAU - Zhu, Haining AU - Zhu H AD - Department of Molecular and Cellular Biochemistry, University of Kentucky College of Medicine, Lexington, KY, United States. FAU - Grahame, Nicholas J AU - Grahame NJ AD - Department of Psychology, Indiana University-Purdue University Indianapolis, Indianapolis, IN, United States. FAU - Luo, Jia AU - Luo J AD - Department of Pathology, University of Iowa Carver College of Medicine, Iowa City, IA, United States. AD - Iowa City VA Health Care System, Iowa City, IA, United States. LA - eng GR - I01 BX001721/BX/BLRD VA/United States GR - P60 AA007611/AA/NIAAA NIH HHS/United States GR - R01 AA015407/AA/NIAAA NIH HHS/United States GR - R01 AA017226/AA/NIAAA NIH HHS/United States PT - Journal Article DEP - 20210309 PL - Switzerland TA - Front Pharmacol JT - Frontiers in pharmacology JID - 101548923 PMC - PMC7985542 OTO - NOTNLM OT - alcohol use disorder OT - endoplasmic reticulum stress OT - neurodegeneration OT - neuroinflammation OT - oxidative stress COIS- The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2021/03/27 06:00 MHDA- 2021/03/27 06:01 PMCR- 2021/03/09 CRDT- 2021/03/26 06:55 PHST- 2020/10/06 00:00 [received] PHST- 2021/01/29 00:00 [accepted] PHST- 2021/03/26 06:55 [entrez] PHST- 2021/03/27 06:00 [pubmed] PHST- 2021/03/27 06:01 [medline] PHST- 2021/03/09 00:00 [pmc-release] AID - 614396 [pii] AID - 10.3389/fphar.2021.614396 [doi] PST - epublish SO - Front Pharmacol. 2021 Mar 9;12:614396. doi: 10.3389/fphar.2021.614396. eCollection 2021.