Effect of hypoosmolality on the abundance, poly(A) tail length and axonal targeting of arginine vasopressin and oxytocin mRNAs in rat hypothalamic magnocellular neurons

Effect of hypoosmolality on the abundance, poly(A) tail length and axonal targeting of arginine vasopressin and oxytocin mRNAs in rat hypothalamic magnocellular neurons
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低渗透压对大鼠下丘脑大细胞神经元中精氨酸加压素和催产素 mRNA 的丰度、聚腺苷酸尾长和轴突靶向的影响

DOI:
10.1016/0014-5793(95)01008-3
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发表时间:
1995
期刊:
影响因子:
3.5
通讯作者:
E. Mohr
E. Mohr
中科院分区:
生物学3区
文献类型:
--
作者:
Pernille C. Svane;N. Thorn;Dietmar Richter;E. Mohr

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精氨酸加压素(AVP)和催产素(OT)的mRNA靶向大鼠下丘脑大细胞神经元的轴突隔室。盐负荷导致下丘脑和轴突AVP mRNA显著升高,但轴突OT mRNA仅中度升高。在这里,我们报告说,低渗透压引起轴突AVP编码转录迅速下降到检测不到的水平后2周。轴突隔室中OT mRNA的水平没有显著变化。在下丘脑中AVP的mRNA也减少。AVP编码转录物的poly(A)束的大小似乎与血浆渗透压密切相关。相反,OT编码mRNA的量和大小仅中度或不受低渗刺激的影响。
Arginine vasopressin (AVP) and oxytocin (OT) mRNAs are targeted to the axonal compartment of rat hypothalamic magnocellular neurons. Salt-loading results in a considerable rise in hypothalamic and axonal AVP mRNA but only a moderate increase for axonal OT mRNA. Here we report that hypoosmolality gives rise to a rapid decrease of axonal AVP encoding transcripts to undetectable levels after 2 weeks. The levels of OT mRNA in the axonal compartment did not change significantly. In the hypothalamus the mRNA for AVP also decreased. The size of the poly(A) tract of AVP encoding transcripts appeared to be strictly correlated with plasma osmolality. In contrast, the amount and size of OT encoding mRNAs were only moderately or not influenced by hypoosmolar stimuli.
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发表时间: 1990
期刊: The Journal of clinical investigation
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