Perinatal Choline Deficiency Produces Abnormal Sensory Inhibition in Sprague-Dawley Rats

Overview

Journal Brain Res

Specialty Neurology

Date 2008 Sep 10

PMID 18778692

Citations 11

Authors

Karen E Stevens

Catherine E Adams

Tiffany J Mellott

Emily Robbins

Michael A Kisley

Affiliations

Soon will be listed here.

Abstract

Adequate choline levels in rodents during gestation have been shown to be critical to several functions, including certain learning and memory functions, when tested at adulthood. Choline is a selective agonist for the alpha7 nicotinic receptor which appears in development before acetylcholine is present. Normal sensory inhibition is dependent, in part, upon sufficient numbers of this receptor in the hippocampus. The present study assessed sensory inhibition in Sprague-Dawley rats gestated on normal (1.1 g/kg), deficient (0 g/kg) or supplemented (5 g/kg) choline in the maternal diet during the critical period for cholinergic cell development (E12-18). Rats gestated on deficient choline showed abnormal sensory inhibition when tested at adulthood, while rats gestated on normal or supplemented choline showed normal sensory inhibition. Assessment of hippocampal alpha-bungarotoxin to visualize nicotinic alpha7 receptors revealed no difference between the gestational choline levels. These data suggest that attention to maternal choline levels for human pregnancy may be important to the normal functioning of the offspring.

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