نتایج جستجو برای: serca2a

تعداد نتایج: 624  

Journal: :American journal of physiology. Heart and circulatory physiology 2004
Tong Tang Mei Hua Gao David M Roth Tracy Guo H Kirk Hammond

Calcium malfunction plays a central role in heart failure. Here, we provide evidence that adenylyl cyclase type VI restores sarco(endo)plasmic reticulum 2a (SERCA2a) affinity for calcium and maximum velocity of cardiac calcium uptake by sarcoplasmic reticulum in murine dilated cardiomyopathy. Restoration of normal SERCA2a affinity for calcium is associated not only with decreased phospholamban ...

2012
Sabine Fredersdorf Christian Thumann Wolfram H Zimmermann Roland Vetter Tobias Graf Andreas Luchner Günter AJ Riegger Heribert Schunkert Thomas Eschenhagen Joachim Weil

BACKGROUND Calcium (Ca2+) handling proteins are known to play a pivotal role in the pathophysiology of cardiomyopathy. However little is known about early changes in the diabetic heart and the impact of insulin treatment (Ins). METHODS Zucker Diabetic Fatty rats treated with or without insulin (ZDF ± Ins, n = 13) and lean littermates (controls, n = 7) were sacrificed at the age of 19 weeks. Z...

مقدمه: این مطالعه با هدف بررسی تاثیر هشت هفته تمرین تناوبی بر بیان ژن کانال‌های کلسیمی گیرنده های رایانودین و پمپ کلسیمی در موشهای صحرایی ایسکمی شده صورت گرفت.مواد و روش ها: در این مطالعه 28 موش‌ صحرایی نر ویستار (250-200 گرم) به صورت تصادفی در 4 گروه شم، ایسکمی، تمرین و تمرین- ایسکمی مورد استفاده قرار گرفتند. انفارکتوس میوکارد (MI) با بستن شریان کرونری نزولی (LAD) به مدت 30 دقیقه انجام شد. برن...

Journal: :The journal of extra-corporeal technology 2008
Emily D Hirleman Qianli Yu Douglas F Larson

Aged individuals have impaired diastolic relaxation-lusitropic function. Dobutamine, a selective B1-adrenergic agonist, is used to augment systolic cardiac function at the termination of cardiopulmonary bypass (CPB). However, our question is whether dobutamine will also enhance the lusitropic function in the aged individual. The myocyte mechanism for the rate of ventricular relaxation is depend...

Journal: :Cellular physiology and biochemistry : international journal of experimental cellular physiology, biochemistry, and pharmacology 2010
Lihua Sun Jing Ai Ning Wang Rong Zhang Jingyuan Li Tianzhu Zhang Wanchen Wu Pengzhou Hang Yanjie Lu Baofeng Yang

The mechanisms of myocardial dysfunction and calcium handling disturbance underlying cerebral ischemia remain obscure. Here we for the first time report that acute cerebral ischemia significantly increased left ventricular end diastolic pressure (LVEDP), but decreased +dP/dt, -dP/dt, and left ventricular systolic pressure (LVSP). Significant increase in either the resting or KCl-induced [Ca2+](...

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