(1) We report a series of experiments designed to determine if agents and conditions that have been reported to alter sodium reabsorption, Na-K-ATPase activity or cellular structure in the rat distal nephron might also regulate the density or affinity of binding of 3H-metolazone to the putative thiazide receptor in the distal nephron.
(2) These studies also suggest at least two mechanisms for uric acid reabsorption; one sodium dependent, the other independent of sodium and water transport.
(3) Agents that lower total plasma or LDL cholesterol in hypercholesterolaemic patients by interfering with cholesterol reabsorption from the gut (cholestyramine, cholestipol) or reduction of hepatic VLDL release (fibrates) do not appear to interfere with platelet hyperreactivity and do not change platelet-derived thromboxane formation.
(4) Classically, parathormone is known to increase bony reabsorption and raise serum calcium.
(5) However, the high serum Ca2+ normalised after the acute injection of ethiofos, an inhibitor of renal Ca2+ reabsorption, which was associated with a marked increase of Ca2+ excretion.
(6) Persistence of hypercalcaemia combined with an increase in tubular reabsorption of calcium in response to cellulose phosphate may be of diagnostic value in suspected primary hyperparathyroidism.
(7) The rate of ascites formation or reabsorption was recorded in anesthetized cats using the technique of intraperitoneal plethysmography.
(8) Bartter's syndrome was suspected because of the features of the hypokalemia, hyperaldosteronism, hyperreninemia, increased concentration of plasma angiotensin I & II, the defect in distal fractional reabsorption of chloride and normotension.
(9) This also implies that both tubular secretion and tubular reabsorption are susceptible to competition between similar substrates for a common carrier site.
(10) In contrast, the former group had an increased sensitivity to infused noradrenaline, which might be responsible for enhanced tubular sodium reabsorption in subjects with a positive family history of hypertension (or "salt sensitive" subjects).
(11) Although a nephric loop (loop of Henle) is lacking, the tubules appear to be structurally well adapted for efficient ion and water reabsorption.
(12) Comparison of these theoretical results with variations in reabsorption observed in micropuncture studies makes it possible to place upper and lower bounds on the difference between interstitial oncotic and hydrostatic pressures in the renal cortex of the rat.
(13) Peritubular capillary microperfusion was used to examine the effects of protein-free and hyperoncotic homologous plasma on fluid reabsorption by proximal convoluted tubules in the hydropenic rat.
(14) The sulfhydryl group content of rat epididymal spermatozoa was similar from one cell to another, suggesting little sperm reabsorption in the epididymis.
(15) However, the possibility of K, Ca, or Mg secretion in a proximal segment followed by reabsorption in a more distal part of the nephron was not ruled out.
(16) Both PTH and DbCAMP produced a fall in whole kidney phosphate reabsorption comparable to saline.
(17) Infusion of 9 and 12% Dextran solution elicited a decrease in water and sodium excretion as well as absolute and fractional proximal tubular fluid reabsorption to a 5% level of significance.
(18) Changes in [Pi]i were correlated with those in fractional Pi reabsorption (FRPi) in vivo and in capacity (Vmax) for Na(+)-Pi cotransport in microvilli derived from animals of similar age and fed the same diets.
(19) This indicated 63% balance between delivery of tubular fluid and the rate of reabsorption between two sites along proximal tubules.
(20) Moreover, both sodium isosmotic reabsorption as a percentage of sodium filtered load and sodium anisosmotic reabsorption as a percentage of sodium distal load were inhibited.
Secreted
Definition:
(imp. & p. p.) of Secrete
Example Sentences:
(1) In the absence of atrial dilatation there was minimal stimulus for ANF secretion.
(2) We have previously shown that serotonin is present in secretory granules of frog adrenochromaffin cells; concurrently, we have demonstrated that serotonin is a potent stimulator of corticosterone and aldosterone secretion by adrenocortical cells.
(3) We have investigated a physiological role of endogenous insulin on exocrine pancreatic secretion stimulated by a liquid meal as well as exogenous secretin and cholecystokinin octapeptide (CCK-8) in conscious rats.
(4) To examine the central nervous system regulation of duodenal bicarbonate secretion, an animal model was developed that allowed cerebroventricular and intravenous injections as well as collection of duodenal perfusates in awake, freely moving rats.
(5) The present study was therefore carried out to specify further which type of adrenoceptor is involved in lithium-induced hyperglycaemia and inhibition of insulin secretion.
(6) Significant increases in acid secretion were observed without changes in cyclic nucleotides.
(7) In summary, GABAergic tone did not effect basal acid secretion in anesthetized rats.
(8) The effects of glucagon-induced insulin secretion upon this lipid regulation are discussed that may resolve conflicting reports in the literature are resolved.
(9) Since the advance and return of sperm inside the tubes could facilitate the interaction of sperm with secretions participating in its maturation, the persistent infertility after vasectomy could be related to the contractile alteration that follows the excessive tubal distention.
(10) This suggests that a physiological mechanism exists which can increase the barrier pressure to gastrooesophageal reflux during periods of active secretion of the stomach, as occurs in digestion.
(11) "They wanted to pass it almost like a secret negotiation," she said.
(12) The secretion of GH as measured by increased plasma level, in response to oral administration of 500 mg L-dopa or 30 min-infusion of arginine, was not modified by prior intravenous administration of 200 micrograms GH-releasing hormone (GHRH).
(13) Short incubations with heparin (5 min) caused a release of the enzyme into the media, while longer incubations caused a 2-8-fold increase in net lipoprotein lipase secretion which was maximal after 2-16 h depending on cell type, and persisted for 24 h. The effect of heparin was dose-dependent and specific (it was not duplicated by other glycosaminoglycans).
(14) This experimental system allows separation of three B lymphocyte developmental stages: early differentiation in vitro, progression to IgM secretion in vivo, and late differentiation dependent upon mature T lymphocytes in vivo.
(15) These results provide evidence that trait selection can change gonadotrophin receptor concentration and the dynamics of hormone secretion during the oestrous cycle of the mouse.
(16) Caries-related bacteriological and biochemical factors were studied in 12 persons with low and 11 persons with normal salivary-secretion rates before and after a four-week period of frequent mouthrinses with 10% sorbitol solution (adaptation period).
(17) The sites of action for somatostatin and epinephrine to inhibit insulin secretion have been reported to be exclusively in the exocytotic pathway.
(18) Since intracellular Ca2+ seems to play a role in stimulus-secretion coupling and ion movements, several aspects of Ca2+ homeostasis have been investigated in CF.
(19) The Metoclopramide-induced secretion of prolactin and aldosterone was blunted in 6 patients pretreated with 200 mg ibopamine.
(20) On the basis of obtained data on the uniformity of chemical compounds of the secretion of glands belonging to different groups their common origin has been suggested.