Contractile force
Ouabain effects on intracellular potassium activity and contractile force in cat papillary muscle
... for contractile force measurements were quiescent except for 4-min periods when force was measured at a cycle length of 1,400 ...and contractile force were measured in the same ...
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THE EFFECTS OF ACUTE HYPOXIA ON THE SYSTEMIC VENOUS AND ARTERIAL SYSTEMS AND ON MYOCARDIAL CONTRACTILE FORCE
... In preparation B, myocardial contractile force rose by 3 to 43 per cent of control levels in eleven of twelve trials in the four dogs in group III in which poorly oxygenated blood perfus[r] ...
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Nitroglycerin and Heterogeneity of Myocardial Blood Flow REDUCED SUBENDOCARDIAL BLOOD FLOW AND VENTRICULAR CONTRACTILE FORCE
... transmural distribution of blood flow in the left ventricle after partial coronary artery occlusion was investigated using two independent methods. In 16 open chest, anesthetized dogs, tubing supplying the cannulated ...
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Original Article Nitric oxide donor, NOC7, reveals dose dependently and cGMP pathway independently biphasic effects on contractile force of isolated rat heart after global ischemia
... tractile force of the isolated rat heart and main- ly embodied as concentration-dependent: The tiny concentration of NO donor can produce a positive inotropic effect and improve the cardi- ac function after ...
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Skeletal Muscle Calcium Metabolism and Contractile Force in Vitamin D deficient Chicks
... These studies demonstrate objecnificanitlv less than that developed by chicks given tive weakness as a result of myopathy in vitamin Dvitamini D3 supplemeints 309 g tension/g wet weight [r] ...
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Effects of Acetylcholine on Resting and Action Potentials, and on Contractile Force in the Ventricle Of Dolabella Auricularia
... At these concentrations the negatively inotropic effect of ACh on a beating ventricle Hill, 1964 may be due to an indirect effect on E-C coupling, whereas the positively inotropic and ch[r] ...
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Effects of 5 Hydroxytryptamine on Action Potentials and on Contractile Force in the Ventricle of Dolabella Auricularia
... The observation that the increased duration of the cardiac action potential of the induced by application of 5-HT is accompanied by ventricle of Dolabella &lark an increase in force agre[r] ...
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MECHANISMS OF UROLOGIC COMPLICATIONS IN STREPTOZOTOCIN INDUCED TYPE 1 DIABETES MELLITUS
... the contractile force of the diabetic urinary bladder tissue may be due to altered sensitivity to Ca 2+ , decreased intracellular cation concentrations and morphological changes to the diabetic urinary ...
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Role of intracellular calcium handling in force interval relationships of human ventricular myocardium
... isometric force during the postextrasystolic contraction which was associated with an increase in the peak intracellular calcium ...related force potentiation was attenuated in myopathic muscles compared to ...
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Multiple Feedback Mechanisms Fine-Tune Rho Signaling To Regulate Morphogenetic Outcomes
... As described in the introduction, the activity of actomyosin cables contributes to diverse forms in tissues (Fig. 1.2). For example, their activity yields very different end morphologies during wound healing (Fig. 1.2A) ...
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Synergistic action of neuropeptide Y and adrenaline in the eel atrium
... the contractile force (A) and the beating rate (B) were plotted against time after the addition of 10 −7 mol l −1 eNPY ( d ), 3 × 10 −8 mol l −1 adrenaline ( m ) or both agents together ( s ...
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A novel small molecule target in human airway smooth muscle for potential treatment of obstructive lung diseases: a staged high-throughput biophysical screening
... in contractile force as measured by traction microscopy (Figure ...cell’s contractile strength [33], decreased from ...net contractile moment ...
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Glucagon like peptide isolated from the eel intestine: effects on atrial beating
... There is general agreement that glucagon increases cardiac contractile force and heart rate. Farah and Tuttle (Farah and Tuttle, 1960) first established the positive inotropic effect of glucagon in a dog ...
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Effect of bite force in occlusal adjustment of dental implants on the distribution of occlusal pressure: comparison among three bite forces in occlusal adjustment
... occlusal force exerted on the occlusal surface of natural teeth and super- structures depends on the amount of the occlusal load, ...the contractile force of the ...
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Importance of the carotid sinus baroreceptors in the regulation of myocardial performance
... ventricular contractile force with Walton-Brodie strain gauge arches; the maximal rate of change in contractile force, dF/dt; the pressure developed within an isovolumic balloon inserted into ...
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Contraction speed and type influences rapid utilisation of available muscle force: neural and contractile mechanisms
... fibre force by SEC ...isometric force (5400 N for vasti and 930 N for RF; Jacobs et ...and contractile velocities were determined by differentiating the fibre length ...voluntary force (MVF) ...
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Influence of the Thyroid State on the Intrinsic Contractile Properties and Energy Stores of the Myocardium
... temperature and contraction frequency. The opposite changes occurred in muscles from hypothyroid cats. Isometric tension was slightly higher in muscles from hyperthyroid and lower in muscles from hypothyroid cats. The ...
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How muscle fiber lengths and velocities affect muscle force generation as humans walk and run at different speeds
... the force generation ability of lower limb muscles changed with walking or running speed; it did in eight of the 11 muscles ...cases, force generation ability increased with speed and in other cases it ...
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The thermal dependence of locomotor performance and muscle contractile function in the salamander Ambystoma tigrinum nebulosum
... Thermal dependence of muscle contractile rates was higher than that of locomotor performance: rates of force development for both isometric twitch and tetanus and maximal shortening velo[r] ...
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Mechanisms of acute ischemic contractile failure of the heart Role of intracellular calcium
... The early fall of force, arrhythmias, and muscle damage all contribute to acute ischemic contractile failure of the heart, which we define as impairment of cardiac function produced by a[r] ...
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