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钙离子在四膜虫激素印记中的作用。

The role of Ca2+ in hormonal imprinting of the Tetrahymena.

作者信息

Kovács P, Csaba G

出版信息

Acta Physiol Hung. 1987;69(2):167-79.

PMID:3113177
Abstract

It is known from model experiments on Tetrahymena that primary exposure to a hormone induces receptor formation or amplification, in other words a hormonal imprinting. Substances acting on the intracellular Ca2+ level of the Tetrahymena, such as TMB-8, EDTA, EGTA, NiCl2 and La(NO3)3, interfered with hormonal imprinting of the unicellular to different degrees, and some of them influenced hormone (insulin, TSH) binding also independently of imprinting. Interference with the intracellular Ca-metabolism generally influenced imprinting by insulin and TSH, which were mediated by different mechanisms, to dissimilar degrees, or in opposite directions. On combined application of the agents acting on Ca-metabolism, their effects were additive. It appears that intact Ca-mediation is an essential prerequisite for normal hormonal imprinting.

摘要

从对四膜虫的模型实验中可知,初次接触一种激素会诱导受体形成或扩增,换句话说就是激素印记。作用于四膜虫细胞内钙离子水平的物质,如TMB - 8、EDTA、EGTA、NiCl2和La(NO3)3,会不同程度地干扰单细胞的激素印记,其中一些物质还会独立于印记作用影响激素(胰岛素、促甲状腺激素)的结合。对细胞内钙代谢的干扰通常会以不同机制、不同程度或相反方向影响由胰岛素和促甲状腺激素介导的印记。在联合应用作用于钙代谢的试剂时,它们的作用是相加的。完整的钙介导似乎是正常激素印记的一个必要前提。

相似文献

1
The role of Ca2+ in hormonal imprinting of the Tetrahymena.钙离子在四膜虫激素印记中的作用。
Acta Physiol Hung. 1987;69(2):167-79.
2
Effect of the cAMP level on hormonal imprinting in Tetrahymena.环磷酸腺苷(cAMP)水平对四膜虫激素印记的影响。
Acta Physiol Hung. 1987;69(2):231-7.
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Influence of interference with the cyclic AMP-adenylcyclase-phosphodiesterase system on TSH-induced hormonal imprinting in the Tetrahymena.干扰环磷酸腺苷-腺苷酸环化酶-磷酸二酯酶系统对四膜虫中促甲状腺激素诱导的激素印记的影响。
Acta Biol Hung. 1986;37(3-4):205-8.
4
Taxon-dependence of receptor level cell-to-cell communication in Tetrahymena: possible explanation for the transmission of hormonal imprinting.四膜虫中受体水平细胞间通讯的分类群依赖性:激素印记传递的可能解释。
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Effect of inhibitors and activators of tyrosine kinase on insulin imprinting in Tetrahymena.酪氨酸激酶抑制剂和激活剂对四膜虫中胰岛素印记的影响。
Cell Biochem Funct. 1992 Dec;10(4):267-71. doi: 10.1002/cbf.290100410.
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Study of the imprinting and overlap of insulin and concanavalin-A at the receptor level in a protozoan (Tetrahymena) model system.在原生动物(四膜虫)模型系统中胰岛素与伴刀豆球蛋白A在受体水平的印记和重叠研究。
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Insulin treatment (hormonal imprinting) increases the insulin production of the unicellular tetrahymena long term. Is there a simultaneous formation of hormone receptor and hormone?胰岛素治疗(激素印记)可长期增加单细胞四膜虫的胰岛素分泌。激素受体和激素是否会同时形成?
Cell Biol Int. 1995 Dec;19(12):1011-4. doi: 10.1006/cbir.1995.1043.
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Effect of pretreatments (imprinting) with different concentrations of insulin on insulin binding of nuclear envelope and plasma membrane in Tetrahymena.不同浓度胰岛素预处理(印记)对四膜虫核膜和质膜胰岛素结合的影响。
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引用本文的文献

1
Cytochemical investigation into the Ca-dependence of positive and negative hormonal imprinting in Tetrahymena.关于四膜虫中正负激素印记的钙依赖性的细胞化学研究。
Histochemistry. 1987;87(6):619-22. doi: 10.1007/BF00492480.