Cardiac contractile proteins. Adenosine triphosphatase activity and physiological function.
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چکیده
منابع مشابه
Cardiac contractile proteins. Adenosine triphosphatase activity and physiological function.
This review has pointed out the good correlation frequently observed between ATPase activity of various contractile protein preparations and contractile function of various muscles including the myocardium. Some of the variables in the measurement of the various ATPases and the relationship of these measurements to physiological ATPase in the intact myofibril have been mentioned. The possible r...
متن کاملBRIEF REVIEWS Cardiac Contractile Proteins Adenosine Triphosphatase Activity and Physiological Function
EN RECENT years there has been an active search for a link between the enzymatic activity of the contractile proteins and increased or decreased myocardial function. Barany's observation of a general parallelism between the actomyosin or myosin adenosine triphosphatase (ATPase) activity and the speed of shortening among different skeletal muscles has provided logic for such a Linkage (Barany, 1...
متن کاملMyocardial contractile function and myofibrillar adenosine triphosphatase activity in chemically sympathectomized rats.
The contractile properties and contractile protein enzymatic activity of skeletal muscle can be altered by neural influences. To determine whether similar influences apply to cardiac muscle, adult rats were chemically sympathectomized by intravenous injection of 6-hydroxydopamine (6-OHDA). After 2 weeks of treatment, rats were anesthetized and an index of myocardial contractility (max dP/dt) wa...
متن کاملInhibition of Adenosine Triphosphatase Activity
Triphenylsulphonium ions inhibit mitochondrial oxidative phosphorylation and adenosine triphosphatase activity. The site of action is on the soluble F1 adenosine triphosphatase component. Triphenylsulphonium ions also inhibit electron transfer in the NAD-cytochrome b region of the respiratory chain. In both types of inhibition, triphenylsulphonium ions are effective at low concentrations, half-...
متن کاملStudies on cardiac myofibrillar adenosine triphosphatase.
It has long been known that myosin and actin can be obtained from heart as well as from skeletal muscle and that, in combining them to form actomyosin, they are interchangeable with their skeletal counterparts (1). The contractile properties of glycerolextracted cardiac strips and cardiac actomyosin (myosin B) threads and bands have also been demonstrated (2, 3). The molecular parameters of car...
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ژورنال
عنوان ژورنال: Circulation Research
سال: 1979
ISSN: 0009-7330,1524-4571
DOI: 10.1161/01.res.45.1.1