BACKGROUND For some endocrine and nutritional biomarkers, for example, cortisol and vitamin B(12), significant associations between 24-hour renal analyte excretion and the respective 24-hour urine volume (U-Vol) have been reported. Therefore, our objective was to investigate whether 24-hour U-Vol (a marker of fluid intake) is also a relevant influencing factor of absolute daily iodine excretion...

In recent papers Bing (1) and Williams (2) have proposed formulae which these authors believe to be more accurate than the original "standard" and "maximum" clearance equations of M6ller, McIntosh, and Van Slyke (3, 4), in expressing the effects of urine volume flow on the urea clearance in human subjects. Both Bing and Williams base their formulae on the data of M6ller et al (3). The essential...

In 1954 a project was started to systematically investigate the nondialyzable substances in human urine. Four reports1 have been presented describing the procedure for removing the insoluble material from urine preserved with toluene (10 ml/specimen) by high-speed continuous-flow centrifugation, after which a soft, buttery layer called “floating lipid fraction” (FF)2 by Smith (1) and Winkler (2...

The concentrating and diluting mechanisms of the normal kidney contribute in an impressive manner to the defense of water economy. In health, a given amount of solute may be excreted in a widely varying volume of water which is determined under most circumstances by the water needs of the organism. This ability to regulate the osmolality of the urine accounts for a range of urine concentrations...

This study compared the urinary excretion characteristics of ethyl glucuronide (EtG) with that of ethanol, with focus on the effect of water-induced diuresis. Six healthy volunteers ingested an ethanol dose of 0.5 g/kg (range 25.0-41.5 g) as 5% (v/v) beer in 30 min and the same volume of water after 3 h. Urine collections were made before starting the experiment and at timed intervals over 31.5...

INDIAN PEDIATRICS 1069 VOLUME 41OCTOBER 17, 2004 attenuation of prostatic tissue seen in congenital obstructions leads to loss of obliquity of the normal ejaculatory ducts as they enter the posterior urethra. Associated distal obstruction to the flow of urine may aid in the urethro-ejaculatory reflux of urine .If the urine is infected, this precipitates epididymo-orchitis as it happened in the ...

It is a well known faet that the intcrruption of the hypothalamus-hypo­ physcal tract, removal of the hypophysis oc rcmoval of thc ncurohypoph}/sis :llone, induces the cxcretion of a large volume of diluted urine Also, in several cases, animals with diabetes insipidus produce slightly hypertonic urine (7) . In this study, hypophysectomized-adrenaJectomized rats were found to be !lear normal in ...

Recent data suggest possible net transport of urinary constituents across mammalian urinary tract epithelia (urothelia). To evaluate the effect of animal hydration status on such transport, we instilled urine collected during 2-day water deprivation, water loading, or ad libitum water intake into isolated in situ bladder(s) of groups of rats undergoing one of the same three hydration states. Af...