Sodium movement across the luminal membrane of the toad bladder is the rate-limiting step for active transepithelial transport. Recent studies suggest that changes in intracellular sodium regulate the Na permeability of the luminal border, either directly or indirectly via increases in cell calcium induced by the high intracellular sodium. To test these proposals, we measured Na movement across...

This paper presents a case series of furcation involved teeth complicated with endodontic involvement which were treated with periodontal, endodontic and restorative procedures using different bone regenerative materials like; (a) Calcium phosphosilicate bone substitute having bioactive glass 69% mixed with glycerin 19% and poly-ethylene 12% dispensed in a putty form; (b) hydroxyapatite 70% and...

SUKI, WADI N., RICK S, SCHWETTMANN, FLOYD C. RECTOR, JR., AND DONALD W. SELDIN. &fect of chronic minerahorticoid administration on calcium excretion in the rat. Am. J. Ph ysiol. 2 15 ( 1) : 7 l-74. 1968.~The effect of prolonged 9-alphafluorohydrocortisone administration on sodium and calcium excretion was investigated in rats fed a low-calcium synthetic diet. In rats fed salt the administration...

Sodium-dependent calcium efflux from rat liver mitochondria has been studied as a function of mitochondrial calcium loads (2 to 40 nmol/mg) and extramitochondrial sodium concentrations (5 to 40 mM). The resulting data can be fit to a terreactant model which exhibits simultaneous kinetics (Le. both sodium and calcium must be bound simultaneously for transport to occur). The Hill coefficients for...

BACKGROUND Sodium is an important determinant of urinary calcium excretion, and race is an important determinant of calcium retention. The effect of dietary sodium on calcium retention and the influence of race have not been studied in adolescence, the life stage during which peak bone mass is accrued. OBJECTIVE The study reported here was undertaken to compare racial differences in calcium r...

Observations were made on the tension development by helical strips of vascular smooth muscle from rabbit aorta and mesenteric artery. Based on the possibility that the pump which moves calcium into the cell coupled with sodium efflux, recently described for squid axon (l), exists also in vascular smooth muscle, studies were designed to evaluate changes in its activity in this muscle. Sodium co...

There is considerable interest in the antihypertensive potential of supplemental dietary calcium in salt-sensitive hypertension. Previously we reported that very high dietary calcium (4.0% vs. 0.4%) lowers mean arterial pressure in Dahl salt-sensitive (DS) hypertensive rats. However, we have recently observed that more moderate calcium supplementation (2.0% vs. 0.4%) increases mean arterial pre...

STATEMENT OF PROBLEM Caries development under overdentures has been a continuing problem and requires the daily use of fluoride to prevent demineralization. PURPOSE The purpose of this in vitro study was to compare the effectiveness of dentifrices containing tricalcium phosphate or calcium phosphosilicate in combination with fluoride to prevent the demineralization of overdenture abutments an...

Calcium added to the solution bathing the outside of isolated frog skin caused a reversible decrease in net sodium transport across the skin. At constant sodium concentration, the inhibition of transport increased with increasing calcium concentration, but approached a limiting value. This maximum degree of inhibition was found to depend on sodium concentration; sodium transport could be inhibi...