Altered daily rhythms of brain and pituitary indolamines and neuropeptides in long-term hypoxic rats.
Altered daily rhythms of brain and pituitary indolamines and neuropeptides in long-term hypoxic rats.
复制标题
改变长期缺氧大鼠的大脑和垂体吲哚胺和神经肽的每日节律。
DOI:
--
复制
发表时间:
1999
影响因子:
--
通讯作者:
L. Denoroy
中科院分区:
文献类型:
--
作者:
L. Poncet;J. Pequignot;J. Cottet;Y. Dalmaz;L. Denoroy
To determine whether sustained hypoxia alters daily rhythms in brain and pituitary neurotransmitters, the daily variations in vasoactive intestinal peptide-like immunoreactivity (VIP-LI), neuropeptide Y-like immunoreactivity (NPY-LI), serotonin (5-HT), and 5-hydroxyindole-3-acetic acid (5-HIAA) content were determined in discrete brain regions, pineal gland and anterior pituitary of hypoxic (10% O(2); 14 days) and normoxic rats. Hypoxia suppressed daily variations in VIP-LI in the suprachiasmatic nuclei (SCN) and the anterior pituitary, enhanced the daily rhythmicity in serotonergic elements of the caudal part of the dorsomedial medulla oblongata (DMMc), and even induced daily variations in NPY-LI in the DMMc as well as in the ventrolateral medulla oblongata. In addition, punctual alterations in the rhythmicity of 5-HT and 5-HIAA in the pineal gland and of plasma corticosterone were observed in hypoxic rats. Thus results of this study indicate that a permanent nonphotic stimulus, such as sustained hypoxia, may affect the functioning of the internal clock located in the SCN and may alter the daily rhythmicity in neurotransmitter content of some brain nuclei and the pituitary gland.
登录
查看更多内容
DOI:
10.1006/bbrc.1996.1199
发表时间:
1996-08-14
影响因子:
3.1
作者:
Wiener, CM;Booth, G;Semenza, GL
通讯作者:
Semenza, GL
DOI:
10.1152/ajpregu.1996.270.1.r283
发表时间:
1996
期刊:
The American journal of physiology.
影响因子:
--
作者:
Scarbrough,K;Harney,JP;Rosewell,KL;Wise,PM
通讯作者:
Wise,PM
DOI:
10.1152/ajpregu.1994.266.6.r1876
发表时间:
1994
期刊:
The American journal of physiology
影响因子:
--
作者:
Derambure,PS;Boulant,JA
通讯作者:
Boulant,JA
DOI:
10.1073/pnas.95.10.5474
发表时间:
1998-05-12
影响因子:
11.1
作者:
Hogenesch, JB;Gu, YZ;Bradfield, CA
通讯作者:
Bradfield, CA