Format

Send to

Choose Destination
See comment in PubMed Commons below
Alcohol. 2012 Jun;46(4):371-6. doi: 10.1016/j.alcohol.2011.11.003. Epub 2012 Mar 24.

Effects of early life stress on drinking and serotonin system activity in rhesus macaques: 5-hydroxyindoleacetic acid in cerebrospinal fluid predicts brain tissue levels.

Author information

1
Department of Physiology and Pharmacology, Wake Forest University Health Sciences, Winston-Salem, NC 27157, USA.

Abstract

Early childhood stress is a risk factor for the development of substance-abuse disorders. A nonhuman primate model of early life stress, social impoverishment through nursery-rearing rather than mother-rearing, has been shown to produce increased impulsive and anxiety-like behaviors, cognitive and motor deficits, and increased alcohol consumption. These behavioral changes have been linked to changes in cerebrospinal fluid (CSF) levels of 5-hydroxyindoleacetic acid (5-HIAA), a serotonin (5-HT) metabolite. The effects of different rearing conditions on ethanol drinking and three measures of 5-HT function in the central nervous system were evaluated, including CSF 5-HIAA levels and tissue levels of 5-HT and 5-HIAA in brain samples. Brain samples were taken from the dorsal caudate, putamen, substantia nigra (SN) pars reticulata, SN pars compacta and hippocampus. There was a clear effect of rearing condition on the 5-HT system. Overall 5-HIAA and 5-HIAA/5-HT ratio measures of 5-HT turnover were significantly lower in nursery reared compared to mother-reared animals. In addition, there was a strong within-subject correlation between CSF and brain tissue 5-HIAA levels. Ethanol drinking was greater in nursery reared monkeys, consistent with previous results. These findings show that CSF 5-HIAA measurements can be used to predict brain 5-HT activity that may be involved in behavioral outcomes such as anxiety and alcohol consumption. Thus, CSF sampling may provide a minimally invasive test for neurochemical risk factors related to alcohol abuse.

PMID:
22445804
PMCID:
PMC3737489
DOI:
10.1016/j.alcohol.2011.11.003
[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for Elsevier Science Icon for PubMed Central
    Loading ...
    Support Center