0048: Deranged myofilament O’GlcNacylation and function in myocardium of obese patients
نویسندگان
چکیده
منابع مشابه
Deranged myofilament phosphorylation and function in experimental heart failure with preserved ejection fraction.
AIMS Heart failure (HF) with preserved ejection fraction (HFpEF) is a major cause of morbidity and mortality. Key alterations in HFpEF include increased left ventricular (LV) stiffness and abnormal relaxation. We hypothesized that myofilament protein phosphorylation and function are deranged in experimental HFpEF vs. normal myocardium. Such alterations may involve the giant elastic protein titi...
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15 صفحه اولMyofilament calcium regulation in human myocardium.
BACKGROUND We investigated whether decreased myofilament calcium contractile activation may, in part, contribute to heart failure. METHODS AND RESULTS Calcium concentration required for 50% activation and Hill coefficient for fibers from nonfailing and failing human hearts at pH 7.1 were not different. Maximum calcium-activated force (F(max)) was also not different. However, at pH 6.8 and 6.9...
متن کاملMyofilament lattice spacing as a function of sarcomere length in isolated rat myocardium.
The Frank-Starling relationship of the heart has, as its molecular basis, an increase in the activation of myofibrils by calcium as the sarcomere length increases. It has been suggested that this phenomenon may be due to myofilaments moving closer together at longer lengths, thereby enhancing the probability of favorable acto-myosin interaction, resulting in increased calcium sensitivity. Accor...
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ژورنال
عنوان ژورنال: Archives of Cardiovascular Diseases Supplements
سال: 2014
ISSN: 1878-6480
DOI: 10.1016/s1878-6480(14)71289-3