Accumulating evidence has suggested that high salt and potassium might be associated with vascular function. The aim of this study was to investigate the effect of salt intake and potassium supplementation on brachial-ankle pulse wave velocity (PWV) in Chinese subjects. Forty-nine subjects (28-65 years of age) were selected from a rural community of northern China. All subjects were sequentiall...

Catecholamines induce net salt and water movements in duck red cells incubated in isotonic solutions. The rate of this response is approximately three times greater than a comparable effect observed in 400 mosmol hypertonic solutions in the absence of hormone (W.F. Schmidt and T. J. McManus. 1977 a.J. Gen. Physiol. 70:59-79. Otherwise, these two systems share a great many similarities. In both ...

T he pulmonary blood vessels have unique structural and functional properties. The pulmonary circulation is a high-flow, low-resistance, low-pressure system, which is mainly explained by two important characteristics of the pulmonary vascular bed: a high compliance of the pulmonary pre-capillary arterioles characterised by thin media and a high capacity to recruit vessels available to cope with...

several plant growth regulators are used to improve the quality of cut flower in bulb plants, but their effectiveness depends on genotype and plant growth conditions such as nutrition status. a pot experiment was conducted under farm condition to study benzyl adenine (ba) and potassium nitrate interaction on floret diameter, stem diameter, flower height, flower number per bulb, fresh and dry we...

Simultaneous measurements were made of the intracellular activities of potassium and lithium in sheep heart Purkinje fibres using ion-sensitive microelectrodes. On exposure of the fibres to lithium, the intracellular activity of lithium rose, with an equivalent decrease in the level of intracellular potassium.

This study investigated endothelium-derived vasodilators and potassium channels involved in the modulation of ropivacaine-induced contraction. In endothelium-intact rat aortae, ropivacaine concentration-response curves were generated in the presence or absence of the following inhibitors: the nonspecific nitric oxide synthase (NOS) inhibitor N (ω) -nitro-L-arginine methyl ester (L-NAME), the ne...

Congenital haemolytic anaemia in a 14 year old girl was caused by increased red cell membrane cation permeability. Potassium permeability was unusually sensitive to hydrostatic pressure and treatment with N-ethylmaleimide, factors which activate a specific chloride dependent potassium channel in cell membranes.

BACKGROUND AND PURPOSE Potassium channels or nitric oxide or both are major mediators of acidosis-induced dilation in the cerebral circulation. However, these contributions depend on a variety of factors such as species and vessel location. The present study was designed to clarify whether potassium channels and endothelial nitric oxide are involved in acidosis-induced dilation of isolated rat ...

The tension in isolated ring preparations of the thoracic aortae from Wistar-Kyoto rats (WKY) and spontaneously hypertensive rats (SHR) was measured isometrically to study the differences in testosterone-induced relaxation between WKY and SHR aortic rings. Testosterone (9 to 300 micromol/L) induced a concentration-dependent relaxation in both WKY and SHR aortic rings, and the relaxation induced...