The importance of a renal factor in the pathogenesis of peripheral cardiac edema has been emphasized in recent publications ( 1-11 ). The work of Futcher and Schroeder (1) indicated that the renal excretion of salt and water was impaired during cardiac decompensation. Numerous other workers (4-6, 10, 11) reported a reduction in renal blood flow, glomerular filtration rate, and sodium excretion ...

The rate of sodium filtration through the glomeruli, as well as the concentration of aldosterone in body fluids, undoubtedly influences the renal excretion of sodium. However, that sodium excretion can change even though the filtration rate for sodium remains constant (1-5) has been amply demonstrated. The rate of glomerular filtration can also change considerably without any concomitant change...

Methenyltetrahydrofolate cyclohydrolase (EC 3.5.4.9) from Clostridium formicoaceticum has been purified to a specific activity of 469 mumol min-1 mg-1 at 35 degrees C, pH 7.2. The purified enzyme is homogeneous as judged by polyacrylamide disc gel electrophoresis, sedimentation velocity, and gel filtration profiles. The molecular weight is 41,000 +/- 200 as determined by sedimentation equilibri...

1. The mechanism of the antidiuretic effect of hydrochlorothiazide in diabetes insipidus was studied in anaesthetized Brattleboro rats with the hereditary hypothalamic form of the disease. 2. The antidiuresis caused by acute administration of hydrochlorothiazide followed an increase in sodium excretion and was associated with a significant fall in the plasma sodium concentration. There were con...

Membrane filtration operations (ultra-, microfiltration) are now extensively used for concentrating or separating an ever-growing variety of colloidal dispersions. However, the phenomena that determine the efficiency of these operations are not yet fully understood. This is especially the case when dealing with colloids that are soft, deformable, and permeable. In this paper, we propose a metho...

Date juice was treated by cross- flow ultra-filtration with molecular weight cut-off (MWCO) of 5 kDa. Optimized levels of feed brix, TMP and operation time were determined as 47.13, 82.11 psi and 30 min, respectively. Under such conditions, 80.94% decolourisation and 97.78 % turbidity reduction were obtained while loss of glucose and fructose were estimated to be only 3.49% and 9.62%, respectiv...

Background: Identifying the sources of variation in QTc measurements is important for preventing arrhythmias during and after hemodialysis. The present study was designed to determine the correlation between the type of hemodialysis buffer and the changes in QTc interval in patients on chronic hemodialysis. Methods: Fifty-nine patients on chronic hemodialysis who referred in winter 2007 to hemo...