The 5-HT3A receptor is essential for fear extinction.

The 5-HT3A receptor is essential for fear extinction.
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DOI:
10.1101/lm.032193.113
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发表时间:
2013-12-16
期刊:
Learning & memory (Cold Spring Harbor, N.Y.)
影响因子:
--
通讯作者:
Shimada S
Shimada S
中科院分区:
其他
文献类型:
--
作者:
Kondo M;Nakamura Y;Ishida Y;Yamada T;Shimada S

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5-HT 3受体是唯一的离子型5-HT受体,在边缘区表达,包括海马、杏仁核和皮质。然而,目前还不知道它是否在恐惧记忆过程中发挥作用。在恐惧条件反射模式中对5-HT 3A受体敲除小鼠的分析表明,5-HT 3A受体不是获得或保持恐惧记忆所必需的,但对于消除背景和音调线索恐惧是必不可少的。我们的数据表明,5-HT 3A受体可能是一个关键的分子调节恐惧记忆过程和恐惧障碍的潜在治疗靶点。
The 5-HT3 receptor, the only ionotropic 5-HT receptor, is expressed in limbic regions, including the hippocampus, amygdala, and cortex. However, it is not known whether it has a role in fear memory processes. Analysis of 5-HT3A receptor knockout mice in fear conditioning paradigms revealed that the 5-HT3A receptor is not required for the acquisition or retention of fear memory but is essential for the extinction of contextual and tone-cued fear. Our data suggest that the 5-HT3A receptor could be a key molecule regulating fear memory processes and a potential therapeutic target for fear disorders.
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