Basal forebrain lesions and memory: alterations in neurotensin, not acetylcholine, may cause amnesia.

Basal forebrain lesions and memory: alterations in neurotensin, not acetylcholine, may cause amnesia.
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基底前脑病变和记忆:神经降压素的改变,而不是乙酰胆碱的改变,可能会导致健忘症。

DOI:
10.1037//0735-7044.103.4.765
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发表时间:
1989
影响因子:
1.9
通讯作者:
Olton,DS
Olton,DS
中科院分区:
医学4区
文献类型:
--
作者:
Wenk,GL;Markowska,AL;Olton,DS

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大细胞基底核(NBM)损伤所产生的行为障碍通常归因于胆碱能细胞的损失。2种不同的神经毒素,鹅膏蕈氨酸(IBO)和使君子酸(QUIS)的影响之间的比较,揭示了这种解释是不一致的数据。将IBO或QUIS注射到大鼠的NBM中,并在T-迷宫中进行交替任务测试。在行为测试开始时,IBO和QUIS大鼠的选择准确性都受损。然而,在行为测试结束时,IBO大鼠(而不是QUIS大鼠)比对照组受损更严重,IBO大鼠比QUIS大鼠受损更严重。IBO降低胆碱乙酰转移酶(ChAT)活性和[-3H]神经降压素结合在新皮层。QUIS降低ChAT活性,但不改变[-3H]神经降压素结合。胆碱能系统可能不是NBM损伤后行为障碍的关键组成部分。(PsycInfo数据库记录(c)2016阿帕,保留所有权利)
Behavioral impairments produced by lesions of the nucleus basalis magnocellularis (NBM) are usually attributed to the loss of cholinergic cells. A comparison between the effects of 2 different neurotoxins, ibotenic (IBO) and quisqualic (QUIS) acid, reveals that this interpretation is inconsistent with the data. Rats were given injections of either IBO or QUIS into the NBM and tested on an alternation task in a T-maze. At the start of behavioral testing, both IBO and QUIS rats had impaired choice accuracy. At the end of behavioral testing, however, IBO rats, but not QUIS rats, were more impaired than controls, and IBO rats were more impaired than QUIS rats. IBO decreased choline acetyltransferase (ChAT) activity and [–3H] neurotensin binding in the neocortex. QUIS decreased ChAT activity but did not change [–3H] neurotensin binding. The cholinergic system may not be the critical component responsible for behavioral impairments following NBM lesions.(PsycINFO Database Record (c) 2016 APA, all rights reserved)
兴奋性氨基酸类似物:神经毒性和癫痫发作
DOI: --
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