Calcium channel blockers are antihypertensive agents with diuretic actions. Yet edema occurs in some patients receiving long-term treatment with these drugs. As with other vasodilators, stimulation for fluid retention could result from systemic vasodilation. We speculated that the upright posture could enhance sodium retention. To test this hypothesis, we studied the effect of upright tilt in 1...

In this study an increased SUSPPUP ratio and fractional excretion of potassium in dogs infected with Babesia canis suggested mineralocorticoid excess in canine babesiosis. A significant increase in strong monovalent electrolyte fractional excretions in azotaemic dogs infected with B. canis probably resulted from acute tubular necrosis.

Spontaneously hypertensive rats have reduced peripheral insulin sensitivity. To determine whether hypertensive rats demonstrate reduced response to the antinatriuretic effect of insulin, urinary sodium excretion was determined in hypertensive and normotensive rats (n=7 per group) before and during euglycemic insulin administration at two infusion rates (21 milliunits/kg load and 4 milliunits/kg...

The exaggerated natriuresis of hypothyroid rats receiving a 5% saline infusion was studied to determine the mechanism and the site within the nephron responsible for this increase in sodium excretion. Sodium clearance (C(Na)) and fractional sodium excretion were both demonstrated to be greater in hypothyroid rats for any amount of sodium infused. The rate of increase in fractional sodium excret...

In metabolic balance studies the intake and excretion of sodium, potassium, and water were measured in spontaneously hypertensive rats (SHRs) of the Okamoto-Aoki strain and age-matched Wistar Kyoto rats (WKYs) that were 3 through 13 weeks of age. While fed their usual chow, young SHRs exhibited differences in excretion as compared to WKYs consuming essentially equivalent amounts of food and wat...

The need for subsample time delay estimation (TDE) between two signals arises quite often in many areas such as radar; sonar etc. In this paper, the use of fractional Fourier transform (FRFT) for subsample TDE is proposed. The proposed estimator uses the magnitude of the FRFT of the signals, although the phase angle of it can also be exploited for the estimation purpose. To validate the propose...

Two weeks after 75 percent nephrectomy in rats fed a normal diet glomerular filtration rate was found to be reduced by 2/3 and there was no hyperkalemia. Normal K balance was maintained by a threefold increase of fractional urinary potassium excretion. When infused with 0.5 M KCl solution, both normal and 75 percent nephrectomized rats increased their fractional excretion, while normal rats kep...

RESEARCH DESIGN AND METHODSdThirty-five nondemented older individuals with type 2 diabetes (mean age 716 5 years) and 35 age-, sex-, and education-matched control subjects underwent a 3 Tesla diffusion-weighted MRI scan and a detailed cognitive assessment. Tractography was performed to reconstruct several white matter tracts. Diffusion tensor imaging measures, including fractional anisotropy (F...

1. The globulins of both normal and diphtheria antitoxic serum exhibit chemically toward reagents the same reactions, being precipitated by magnesium sulphate and split up into fractions in precisely the same way. 2. All of the diphtheric antitoxic power of both normal and immunized serum is always carried by the globulin and its fractional precipitates. 3. During the fractional precipitation o...