Now showing items 1-10 of 1076
Arginine vasopressin mediates cardiovascular responses to hypoxemia in fetal sheep
Acute hypoxemia results in hypertension, bradycardia, and cardiac output redistribution in fetal sheep. The blood flow redistribution is produced by differential changes in vascular resistance of various fetal organs. ...
Role of endogenous opioids in the cardiovascular responses to asphyxia in fetal sheep
Intravenous administration of the opioid receptor antagonist naloxone to asphyxiated fetal sheep increases the arterial blood pressure. We examined the hypothesis that endogenous opioids modify the cardiac output distribution ...
Angiotensin-mediated calcium efflux from adrenal glomerulosa cells
The effects of angiotensin II on efflux of radiocalcium and production of aldosterone from dispersed bovine adrenal glomerulosa cells were studied using a flow-through system. Concentrations of angiotensin II between 1.25 ...
Effect of angiotensin II, ATP, and ionophore A23187 on potassium efflux in adrenal glomerulosa cells
Angiotensin II stimulus on perifused bovine adrenal glomerulosa cells elicited an increase in 86Rb efflux from cells previously equilibrated with the radioisotope. When 45Ca fluxes were measured under similar conditions, ...
Angiotensin II causes a dual effect on potassium permeability in adrenal glomerulosa cells
In previous studies it was shown that angiotensin II causes a Ca-dependent increase in the K permeability of bovine adrenal glomerulosa cells [Am. J. Physiol. 250 (Endocrinol. Metab. 13): E125-E130, 1986]. Here we show ...
Subcellular remodeling of the T-tubule membrane system: The limits of myocardial recovery revealed?
(Lippincott Williams and Wilkins, 2017)
Energy metabolism, thyroid calorigenesis, and oxidative stress: functional and cytotoxic consequences
(Taylor and Francis, 2000)
Catechol-mediated effects of harmaline on the action potential of rat atrial fibres
(Oxford University Press, 1977)
Summary: The mechanism of the transient enhancement of the amplitude of the action potential (AAP) induced by harmaline (HME) was studied in rat atria. The results show that HME increases AAP through an enhancement of the ...
Total and regional coronary blood flow during acute right ventricular pressure overload
Total and regional coronary blood flow were measured with radioactive microspheres before and during acute right ventricular pressure overload. Coronary flow to the left ventricular wall decreased and coronary vascular ...
Mechanical effects of heart contraction on coronary flow
(Oxford University Press, 1975)
AUTHORS' SYNOPSIS: The mechanical effects of heart contraction on coronary flow were studied in the dog heart by implanting vessels in the subendocardial and subepicardial layers of the left ventricular wall and perfusing ...