نتایج جستجو برای: sodium absorption ratio
تعداد نتایج: 794329 فیلتر نتایج به سال:
BACKGROUND Fluid and sodium balance is important for the success of long-term peritoneal dialysis. Convective transport is the major determinant for sodium removal during peritoneal dialysis using conventional dialysis solutions. However, recent studies showed that lower sodium concentration in dialysate could significantly increase sodium removal by increasing the diffusion gradient, thereby i...
Inherited and acquired disorders that enhance the activity of transporters mediating renal tubular Na(+) reabsorption are well established causes of hypertension. It is unclear, however, whether primary activation of an Na(+)-independent chloride transporter in the kidney can also play a pathogenic role in this disease. Here, mice overexpressing the chloride transporter pendrin in intercalated ...
The effect of high methoxy apple pectin, a carbohydrate gelling agent, on the intestinal absorption of glucose, water, and sodium was studied in man. The effect of intraluminal fibre was evaluated in 22 healthy volunteers by the intestinal perfusion technique under an occlusive balloon. The test solutions (NaCl 130 mM, KCl 5 mM, glucose or mannitol 30 mM, PEG 4000 5 g/l) were perfused just beyo...
The acute effects of single pharmacological doses of glucocorticoid hormones on net electrolyte and water transport and electrical potential difference (pd) in the rectum was studied in control subjects and in patients with either active or inactive ulcerative colitis, using a dialysis technique. Compared with 17 control subjects, nine patients with active ulcerative colitis exhibited marked de...
objective: soil salinity is one of the major worldwide environmental constraints affecting agricultural production in arid and semiarid regions. lack of proper management of water and soil resources lead to increase soil salinity and reduce soil fertility. on the other hand, it seems simple and cheap method of measuring soil salinity is necessary. the aim of this study was to determine the rela...
Controversy continues regarding the optimal composition of glucose electrolyte oral rehydration solutions for the treatment of acute diarrhoea. Four perfusion models (normal human jejunum, normal rat small intestine, cholera toxin treated secreting rat small intestine and rotavirus infected rat small intestine) have been developed and used to compare the efficacy of a hypotonic oral rehydration...
Experimental apparatus and measurement technique are described for precision absorption measurements in sodium-noble gas mixtures. The absolute absorption coefficient is measured in the wavelength range from 425 nm to 760 nm with ±2% uncertainty and spectral resolution of 0.02 nm. The precision is achieved by using a specially designed absorption cell with an accurately defined absorption path ...
Several solutes are preferentially absorbed by specific segments of the gastrointestinal tract(l). This variation in the distribution of sites for particular absorptive meclhanisms suggests that the enzymes related to these processes may also be assymmetrically distributed. The observation that ouabain, an inhibitor of sodium-potassium-activated adenosine triphosphatase (Na-K-ATPase) in vitro, ...
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