Hydrogen sulfide in paraventricular nucleus enhances sympathetic activity and cardiac sympathetic afferent reflex in chronic heart failure rats.
Hydrogen sulfide in paraventricular nucleus enhances sympathetic activity and cardiac sympathetic afferent reflex in chronic heart failure rats.
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室旁核中的硫化氢增强慢性心力衰竭大鼠的交感神经活动和心脏交感传入反射
DOI:
10.1371/journal.pone.0050102
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Zhu GQ
中科院分区:
文献类型:
--
作者:
Gan XB;Liu TY;Xiong XQ;Chen WW;Zhou YB;Zhu GQ
Intracerebroventricular infusion of NaHS, a hydrogen sulfide (H2S) donor, increased mean arterial pressure (MAP). This study was designed to determine the roles of H2S in the paraventricular nucleus (PVN) in modulating sympathetic activity and cardiac sympathetic afferent reflex (CSAR) in chronic heart failure (CHF). CHF was induced by left descending coronary artery ligation in rats. Renal sympathetic nerve activity (RSNA) and MAP were recorded under anesthesia. CSAR was evaluated by the RSNA and MAP responses to epicardial application of capsaicin. PVN microinjection of low doses of a H2S donor, GYY4137 (0.01 and 0.1 nmol), had no significant effects on RSNA, MAP and CSAR. High doses of GYY4137 (1, 2 and 4 nmol) increased baseline RSNA, MAP and heart rate (HR), and enhanced CSAR. The effects were greater in CHF rats than sham-operated rats. A cystathionine-β-synthase (CBS) inhibitor, hydroxylamine (HA) in PVN had no significant effect on the RSNA, MAP and CSAR. CBS activity and H2S level in the PVN were decreased in CHF rats. No significant difference in CBS level in PVN was found between sham-operated rats and CHF rats. Stimulation of cardiac sympathetic afferents with capsaicin decreased CBS activity and H2S level in the PVN in both sham-operated rats and CHF rats. Exogenous H2S in PVN increases RSNA, MAP and HR, and enhances CSAR. The effects are greater in CHF rats than those in sham-operated rats. Endogenous H2S in PVN is not responsible for the sympathetic activation and enhanced CSAR in CHF rats.
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影响因子:
20.1
作者:
Calvert JW;Jha S;Gundewar S;Elrod JW;Ramachandran A;Pattillo CB;Kevil CG;Lefer DJ
通讯作者:
Lefer DJ
影响因子:
3.7
作者:
Gan XB;Duan YC;Xiong XQ;Li P;Cui BP;Gao XY;Zhu GQ
通讯作者:
Zhu GQ
影响因子:
5.3
作者:
Fox B;Schantz JT;Haigh R;Wood ME;Moore PK;Viner N;Spencer JP;Winyard PG;Whiteman M
通讯作者:
Whiteman M
影响因子:
7.4
作者:
Li, Ling;Salto-Tellez, Manuel;Moore, Philip K.
通讯作者:
Moore, Philip K.
DOI:
10.1152/ajpregu.00338.2004
发表时间:
2006-04-01
影响因子:
2.8
作者:
Li, YF;Wang, W;Patel, KP
通讯作者:
Patel, KP