Neuropeptide Y antagonism reduces reflex cutaneous vasoconstriction in humans.
Neuropeptide Y antagonism reduces reflex cutaneous vasoconstriction in humans.
复制标题
神经肽 Y 拮抗作用可减少人类反射性皮肤血管收缩。
DOI:
10.1152/ajpheart.00061.2004
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发表时间:
2004
期刊:
影响因子:
--
通讯作者:
Johnson,JohnM
中科院分区:
文献类型:
--
作者:
Stephens,DanP;Saad,AdhamR;Bennett,LeeAnnT;Kosiba,WojciechA;Johnson,JohnM
Previous studies have provided evidence of a non-noradrenergic contributor to reflex cutaneous vasoconstriction in humans but did not identify the transmitter responsible. To test whether neuropeptide Y (NPY) has a role, in two series of experiments we slowly reduced whole body skin temperature (TSK) from 34.5 to 31.7°C. Inprotocol 1, Ringer solution and the NPY receptor antagonist BIBP-3226 alone were delivered intradermally via microdialysis. Inprotocol 2, yohimbine plus propranolol (Yoh + Pro), Yoh + Pro in combination with BIBP-3226, and Ringer solution were delivered to antagonize locally the vasomotor effects of NPY and norepinephrine. Blood flow was measured by laser Doppler flowmetry (LDF). Mean arterial blood pressure (MAP) was monitored at the finger (Finapres). Inprotocol 1, cutaneous vascular conductance (CVC) fell by 45%, to 55.1 ± 5.6% of baseline at control sites (P< 0.05). At BIBP-3226-treated sites, CVC fell by 34.1% to 65.9 ± 5.0% (P< 0.05;P< 0.05 between sites). Inprotocol 2, during body cooling, CVC at control sites fell by 32.6%, to 67.4 ± 4.3% of baseline; at sites treated with Yoh + Pro, CVC fell by 18.7%, to 81.3 ± 4.4% of baseline (P< 0.05 vs. baseline;P< 0.05 vs. control) and did not fall significantly at sites treated with BIBP-3226 + Yoh + Pro (P> 0.05;P< 0.05 vs. other sites). After cooling, exogenous norepinephrine induced vasoconstriction at control sites (P< 0.05) but not at sites treated with Yoh + Pro + BIBP-3226 (P> 0.05). These results indicate that NPY participates in sympathetically mediated cutaneous vasoconstriction in humans during whole body cooling.
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影响因子:
37.8
作者:
S. Taddei;Roberto Pedrinelli;Antonio Salvetti
通讯作者:
Antonio Salvetti
DOI:
--
发表时间:
1954
期刊:
Journal of Physiology
影响因子:
--
作者:
F. Duff;G. C. Patterson;J. Shepherd
通讯作者:
J. Shepherd
影响因子:
8.3
作者:
PARATI, G;CASADEI, R;MANCIA, G
通讯作者:
MANCIA, G
影响因子:
5.5
作者:
BINI, G;HAGBARTH, KE;WALLIN, BG
通讯作者:
WALLIN, BG
DOI:
10.1111/j.1600-0773.1996.tb00271.x
发表时间:
1996
期刊:
Pharmacology & toxicology
影响因子:
--
作者:
L. Grundemar;M. Ekelund
通讯作者:
M. Ekelund