Perinatal choline deficiency produces abnormal sensory inhibition in Sprague-Dawley rats.

Perinatal choline deficiency produces abnormal sensory inhibition in Sprague-Dawley rats.
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DOI:
10.1016/j.brainres.2008.08.047
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发表时间:
2008-10-27
期刊:
影响因子:
2.9
通讯作者:
Kisley MA
Kisley MA
中科院分区:
医学3区
文献类型:
--
作者:
Stevens KE;Adams CE;Mellott TJ;Robbins E;Kisley MA

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在啮齿类动物成年后的测试中发现,在怀孕期间,足够的胆碱水平对几种功能至关重要,包括某些学习和记忆功能。胆碱是α7烟碱受体的选择性激动剂,在乙酰胆碱出现之前就已出现。正常的感觉抑制部分依赖于海马体中这种受体的足够数量。本研究评估了Sprague-Dawley大鼠在胆碱能细胞发育的关键时期(E12-18),母体饮食中正常(1.1 g/kg),缺乏(0 g/kg)或补充(5 g/kg)胆碱的感觉抑制。在成年期测试中,缺乏胆碱的妊娠大鼠表现出异常的感觉抑制,而正常或补充胆碱的妊娠大鼠表现出正常的感觉抑制。海马α-班加罗毒素对烟碱α7受体的可视化评估显示妊娠期胆碱水平无差异。这些数据表明,对孕妇胆碱水平的关注可能对后代的正常功能很重要。
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 α7 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 α-bungarotoxin to visualize nicotinic α7 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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