In vivo gene transfer of parvalbumin improves diastolic function in aged rat hearts.

In vivo gene transfer of parvalbumin improves diastolic function in aged rat hearts.
复制标题

小清蛋白的体内基因转移可改善老年大鼠心脏的舒张功能。

DOI:
10.1016/j.cardiores.2004.06.028
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发表时间:
2005
影响因子:
10.8
通讯作者:
R. Hajjar
R. Hajjar
中科院分区:
医学1区
文献类型:
--
作者:
U. Schmidt;Xinsheng Zhu;D. Lebeche;F. Huq;J. Guerrero;R. Hajjar

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目的:舒张功能障碍是老年哺乳动物心脏的一个特征性表现。小清蛋白充当 Ca2+ 汇并增强骨骼肌的松弛,并且心肌中小清蛋白的过度表达增加体外和体内的心脏松弛。因此,本研究的目的是检验小清蛋白体内基因转移将改善老年大鼠心脏舒张功能障碍的假设。 方法:我们使用腺病毒将小清蛋白转移到两种不同的衰老大鼠模型中:Fischer 344(F344)和Fischer 344×Brown挪威F1杂种(F344×BN)。基因转移后测量并比较心脏功能。结果:两种大鼠衰老模型体内小清蛋白的过表达对收缩参数没有影响,但降低了左心室舒张压和压力下降的时间过程。小清蛋白的过度表达还改善了衰老大鼠的力频率关系。结论:小清蛋白的体内过度表达改善了两种衰老大鼠模型的舒张功能障碍,并且这种效果与所研究的大鼠品系无关。结果表明,小清蛋白基因疗法可以在不增加能量消耗的情况下解决受损的 Ca2+ 稳态和舒张功能障碍。
Objective: Diastolic dysfunction is a characteristic finding of the aged mammalian heart. Parvalbumin acts as a Ca2+sink and enhances relaxation in skeletal muscle, and overexpression of parvalbumin in myocardium increased cardiac relaxation in vitro as well as in vivo. Therefore, the objective of this study is to test the hypothesis that in vivo gene transfer of parvalbumin will improve diastolic dysfunction in aged rat heart.Methods: We used adenovirus to transfer parvalbumin into two different rat models of aging: the Fischer 344 (F344) and the Fischer 344 × Brown Norway F1 hybrid (F344 × BN). Cardiac function was measured and compared after gene transfer.Results: In vivo overexpression of parvalbumin in both rat aging models had no effect on systolic parameters but reduced left ventricular diastolic pressure and the time course of pressure decline. Overexpression of parvalbumin also improved the force frequency relationship in senescent rats.Conclusion: In vivo overexpression of parvalbumin improves diastolic dysfunction in two rat models of senescence, and this effect is independent of the rat strain investigated. The results show promise that gene therapy of parvalbumin may address the impaired Ca2+homeostasis and diastolic dysfunction without an increase in energy expenditure.
DOI: 10.1073/pnas.95.9.5251
发表时间: 1998-04-28
影响因子: 11.1
作者:
Hajjar, RJ;Schmidt, U;Rosenzweig, A
通讯作者: Rosenzweig, A
DOI: 10.1161/01.res.78.5.893
发表时间: 1996-05-01
影响因子: 20.1
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小清蛋白在青蛙骨骼肌松弛中的作用。
DOI: 10.1007/978-1-4615-2872-2_13
发表时间: 1993
影响因子: --
作者:
Hou,TT;Johnson,JD;Rall,JA
通讯作者: Rall,JA
DOI: 10.1113/jphysiol.1991.sp018752
发表时间: 1991-09-01
影响因子: 5.5
作者:
HOU, TT;JOHNSON, JD;RALL, JA
通讯作者: RALL, JA
从老年大鼠分离的心脏肌浆网中CaATP酶含量较低。
DOI: 10.1152/ajpheart.1993.264.5.h1609
发表时间: 1993
期刊: The American journal of physiology
影响因子: --
作者:
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通讯作者: Tate,CA