Document Detail


Alcohol-mediated Purkinje cell loss in the absence of hypoxemia during the third trimester in an ovine model system.
MedLine Citation:
PMID:  11505032     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
BACKGROUND: Although the mechanisms that underlie fetal alcohol-induced neuronal loss have not been determined, hypoxia/hypoxemia has been considered a leading candidate. This study was designed to test the hypothesis that neuronal loss could occur in the developing brain in the absence of fetal hypoxemia. METHODS: Three groups of pregnant sheep were used: a control group, a binge-drinking group, and a pair-fed group. The alcohol and pair-fed animals were anesthetized on day 113 of pregnancy, and the mothers and fetuses were instrumented with arterial and venous catheters. All animals were killed on day 133. Stereological cell counting techniques were used to estimate the total number of Purkinje cells in the fetal cerebellum. RESULTS: Peak maternal and fetal blood alcohol concentrations did not produce fetal hypoxemia. Nevertheless, there was a 25% loss of Purkinje cells of the cerebellum in the alcohol-exposed fetuses compared with that in the pair-fed controls. The loss of neurons was not accompanied by microencephaly or a concomitant decrease in either cerebellar weight or volume of the fetal cerebellum. CONCLUSIONS: Neuronal loss can be observed after alcohol exposure during the third trimester equivalent in fetal sheep in the absence of alcohol-induced hypoxemia. Furthermore, cell loss in the absence of deficits in gross brain weight or regional brain volume indicates that the lack of gross brain volume deficits from magnetic resonance imaging techniques is not a reliable indication that the brain is unaffected by the alcohol exposure.
Authors:
J R West; S E Parnell; W J Chen ; T A Cudd
Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  Alcoholism, clinical and experimental research     Volume:  25     ISSN:  0145-6008     ISO Abbreviation:  Alcohol. Clin. Exp. Res.     Publication Date:  2001 Jul 
Date Detail:
Created Date:  2001-08-15     Completed Date:  2001-09-13     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  7707242     Medline TA:  Alcohol Clin Exp Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1051-7     Citation Subset:  IM    
Affiliation:
Department of Human Anatomy and Medical Neurobiology, College of Medicine, The Texas A&M University System Health Science Center, College Station, Texas 77843-1114, USA. jrwest@tamu.edu
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MeSH Terms
Descriptor/Qualifier:
Algorithms
Animals
Anoxia / pathology*
Body Weight / drug effects
Brain / drug effects,  pathology
Cell Count
Central Nervous System Depressants / pharmacology*
Cerebellum / pathology*
Ethanol / pharmacology*
Female
Organ Size / drug effects
Pregnancy
Purkinje Cells / pathology*
Sheep
Grant Support
ID/Acronym/Agency:
AA10940/AA/NIAAA NIH HHS
Chemical
Reg. No./Substance:
0/Central Nervous System Depressants; 64-17-5/Ethanol

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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