Urocortin3 in the Posterodorsal Medial Amygdala Mediates Stress-induced Suppression of LH Pulsatility in Female Mice.
Urocortin3 in the Posterodorsal Medial Amygdala Mediates Stress-induced Suppression of LH Pulsatility in Female Mice.
复制标题
杏仁内侧背侧核中的Urocortin 3介导了应激诱导的雌性小鼠促黄体生成素搏动抑制。
DOI:
10.1210/endocr/bqab206
复制
发表时间:
2021-12-01
期刊:
影响因子:
4.8
通讯作者:
O'Byrne KT
中科院分区:
文献类型:
--
作者:
Ivanova D;Li XF;McIntyre C;Liu Y;Kong L;O'Byrne KT
Psychosocial stress disrupts reproduction and interferes with pulsatile LH secretion. The posterodorsal medial amygdala (MePD) is an upstream modulator of the reproductive axis and stress. Corticotropin-releasing factor type 2 receptors (CRFR2s) are activated in the presence of psychosocial stress together with increased expression of the CRFR2 ligand Urocortin3 (Ucn3) in the MePD of rodents. We investigate whether Ucn3 signalling in the MePD is involved in mediating the suppressive effect of psychosocial stress on LH pulsatility. First, we administered Ucn3 into the MePD and monitored the effect on LH pulses in ovariectomized mice. Next, we delivered Astressin2B, a selective CRFR2 antagonist, intra-MePD in the presence of predator odor, 2,4,5-trimethylthiazole (TMT) and examined the effect on LH pulses. Subsequently, we virally infected Ucn3-cre-tdTomato mice with inhibitory designer receptor exclusively activated by designer drugs (DREADDs) targeting MePD Ucn3 neurons while exposing mice to TMT or restraint stress and examined the effect on LH pulsatility as well as corticosterone release. Administration of Ucn3 into the MePD dose-dependently inhibited LH pulses and administration of Astressin2B blocked the suppressive effect of TMT on LH pulsatility. Additionally, DREADDs inhibition of MePD Ucn3 neurons blocked TMT and restraint stress-induced inhibition of LH pulses and corticosterone release. These results demonstrate for the first time that Ucn3 neurons in the MePD mediate psychosocial stress-induced suppression of the GnRH pulse generator and corticosterone secretion. Ucn3 signalling in the MePD plays a role in modulating the hypothalamic-pituitary-gonadal and hypothalamic-pituitary-adrenal axes, and this brain locus may represent a nodal center in the interaction between the reproductive and stress axes.
登录
查看更多内容
影响因子:
3.2
作者:
Adekunbi DA;Li XF;Lass G;Shetty K;Adegoke OA;Yeo SH;Colledge WH;Lightman SL;O'Byrne KT
通讯作者:
O'Byrne KT
影响因子:
3.1
作者:
Comninos AN;Anastasovska J;Sahuri-Arisoylu M;Li X;Li S;Hu M;Jayasena CN;Ghatei MA;Bloom SR;Matthews PM;O'Byrne KT;Bell JD;Dhillo WS
通讯作者:
Dhillo WS
影响因子:
3.7
作者:
Adekunbi DA;Li XF;Li S;Adegoke OA;Iranloye BO;Morakinyo AO;Lightman SL;Taylor PD;Poston L;O'Byrne KT
通讯作者:
O'Byrne KT
影响因子:
5.3
作者:
Deussing, Jan M.;Breu, Johannes;Wurst, Wolfgang
通讯作者:
Wurst, Wolfgang
影响因子:
2.9
作者:
Cavalcante, Judney Cley;Sita, Luciane Valeria;Elias, Carol Fuzeti
通讯作者:
Elias, Carol Fuzeti