Ischemic heart failure enhances endogenous myocardial apelin and APJ receptor expression.
Ischemic heart failure enhances endogenous myocardial apelin and APJ receptor expression.
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DOI:
10.2478/s11658-006-0058-7
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发表时间:
2007
影响因子:
8.3
通讯作者:
Joseph Woo Y
中科院分区:
文献类型:
--
作者:
Atluri P;Morine KJ;Liao GP;Panlilio CM;Berry MF;Hsu VM;Hiesinger W;Cohen JE;Joseph Woo Y
Apelin interacts with the APJ receptor to enhance inotropy. In heart failure, apelin-APJ coupling may provide a means of enhancing myocardial function. The alterations in apelin and APJ receptor concentrations with ischemic cardiomyopathy are poorly understood. We investigated the compensatory changes in endogenous apelin and APJ levels in the setting of ischemic cardiomyopathy. Male, Lewis rats underwent LAD ligation and progressed into heart failure over 6 weeks. Corresponding animals underwent sham thoracotomy as control. Six weeks after initial surgery, the animals underwent hemodynamic functional analysis in the presence of exogenous apelin-13 infusion and the hearts were explanted for western blot and enzyme immunoassay analysis. Western blot analysis of myocardial APJ concentration demonstrated increased APJ receptor protein levels with heart failure (1890750±133500 vs. 901600±143120 intensity units, n=8, p=0.00001). Total apelin protein levels increased with ischemic heart failure as demonstrated by enzyme immunoassay (12.0±4.6 vs. 1.0±1.2 ng/ml, n=5, p=0.006) and western blot (1579400±477733 vs. 943000±157600 intensity units, n=10, p=0.008). Infusion of apelin-13 significantly enhanced myocardial function in sham and failing hearts. We conclude that total myocardial apelin and APJ receptor levels increase in compensation for ischemic cardiomyopathy.
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影响因子:
8.3
作者:
Cingolani, OH;Yang, XP;Carretero, OA
通讯作者:
Carretero, OA
DOI:
10.1016/s0167-4889(99)00114-7
发表时间:
1999-10-13
影响因子:
5.1
作者:
Habata, Y;Fujii, R;Fujino, M
通讯作者:
Fujino, M
DOI:
10.1006/bbrc.1998.9489
发表时间:
1998-10-20
影响因子:
3.1
作者:
Tatemoto, K;Hosoya, M;Fujino, M
通讯作者:
Fujino, M
影响因子:
37.8
作者:
Jayasankar, V;Woo, YJ;Sweeney, HL
通讯作者:
Sweeney, HL
影响因子:
2.5
作者:
Sunter, D;Hewson, AK;Dickson, SL
通讯作者:
Dickson, SL