Effect of estradiol-17β on calcitonin receptor bindings in the hen neurohypophysis

被引：0
|
作者：
Nakayama, H. [1 ]
Takahashi, T. [2 ]
Nakagawa-Mizuyachi, K. [1 ]
Kawashima, M. [1 ]
机构：
[1] Gifu Univ, United Grad Sch Agr Sci, Gifu 5011193, Japan
[2] Gifu Univ, Grad Sch Appl Biol Sci, Gifu 5011193, Japan
来源：
POULTRY SCIENCE | 2011年 / 90卷 / 01期
关键词：
estradiol-17; beta; hen neurohypophysis; calcitonin receptor; binding affinity; binding capacity; ARGININE VASOTOCIN; LUTEINIZING-HORMONE; OVULATORY CYCLE; NONLAYING HENS; DOMESTIC-FOWL; PLASMA-LEVELS; OVIPOSITION; PROGESTERONE; RELEASE; MESOTOCIN;
D O I：
10.3382/ps.2010-00965
中图分类号：
S8 [畜牧、 动物医学、狩猎、蚕、蜂];
学科分类号：
0905 ;
摘要：
The present study was performed to elucidate whether estradiol-17 beta (E-2) would affect calcitonin (CT) receptor binding in the hen neurohypophysis. The equilibrium dissociation constant (K-d) and the maximum binding capacity (B-max) of the CT receptor in the plasma membrane fraction of the hen neurohypophysis were examined by Scatchard analysis of specific binding of I-125-labeled chicken CT. A single i.m. injection of E-2 into nonlaying hens caused a decrease in K-d and B-max values of the CT receptor. The K-d and B-max values of the CT receptor were smaller in laying hens than in nonlaying hens. The present study suggests that E-2 may increase the action of CT on the neurohypophysis in hens.
引用
收藏
页码：191 / 194
页数：4
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