Results 251 to 260 of about 160,172 (303)
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Regulation of Myocardial Contractility
Journal of Cardiovascular Pharmacology, 1995The definition of myocardial contractility remains complex and its exact measurement remains difficult, especially in the intact heart. Measurement of load-independent effects requires sophisticated equipment and preparations that are not applicable to clinical practice.
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Contractility of the Fallopian Tube
Gynecologic Investigation, 2010Recordings of intratubal pressure in women reveal a complex pattern of tubal contractions. Overall activity of the fallopian tube is increased during ovulation. During the luteal phase of the menstrual cycle, activity is depressed but never suppressed.
E M, Coutinho, H, Maia, C E, Mattos
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Contractile Proteins of the Heart
Hospital Practice, 1983Research findings to date indicate that there may not be a discrete change in contractile proteins in the common forms of heart failure. While the search for a defective myosin molecule in this context no longer seems promising, it remains plausible to propose "up-regulation" to a myosin variant with high ATPase activity as a means of increasing ...
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Biophysical Chemistry, 1988
The concept of Ca2+ regulation, first discovered and developed in muscle research, is historically surveyed. Ca2+ regulation mechanisms in actomyosin-dependent contractile processes are compared, emphasis being placed on the great diversity. The mode of action of Ca2+ is discussed with the examples of troponin and calmodulin, the most differentiated ...
S, Ebashi, Y, Ogawa
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The concept of Ca2+ regulation, first discovered and developed in muscle research, is historically surveyed. Ca2+ regulation mechanisms in actomyosin-dependent contractile processes are compared, emphasis being placed on the great diversity. The mode of action of Ca2+ is discussed with the examples of troponin and calmodulin, the most differentiated ...
S, Ebashi, Y, Ogawa
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Contractile Proteins and Myofibrillogenesis
1993Publisher Summary This chapter discusses how muscle protein isoforms are expressed in the developing muscle and how the expressions of various myofibrillar proteins are interrelated. The regulatory mechanisms of protein assembly that leads to thin and thick filament formation are also presented.
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Quantification of myocardial contractility
The American Journal of Cardiology, 1970Until the mid 1950’s there was a growing tendency to assume that the heart met the constantly changing hemodynamic demands of the body primarily by varying end-diastolic volume (the Frank-Starling relation) and heart rate. Although many cardiologists and physiologists had noted that cardiac performance could be modified without concurrent parallel ...
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Maturation and Cardiac Contractility
Cardiology Clinics, 1989Maturation has been shown to enhance the ability of the myocardium to contract. Whenever developmental changes in the systems that control or modulate myocardial contractility have been sought, they have indeed been found. These include an increase in the amount and organization of the myofilaments, an increase in SR amount, organization ...
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Ca2+ and the contractile proteins
Journal of Molecular and Cellular Cardiology, 1984Troponin regulation can be divided into two categories, primary and secondary. While the former underlies the processes common to troponin-regulated muscles, the latter varies between different types of muscle. One example of secondary regulation is the Ca2+ dependent interaction of troponin T and troponin C, which tends to suppress the myosin-actin ...
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Cyclopropane and Contractility
Anesthesiology, 1971R S, Reneman, G, Pollack
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