Influence Des Sulfates Sur Le Métabolisme Phospho-Calcique. I. — Utilisation Du Sulfate De Calcium Par Le Mouton

Guéguen, L.; Besançon, P.; Allez, Monique; Camus, Pierrette

doi:10.1051/rnd:19720406

Cited by 10 publications

(5 citation statements)

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“…The aim of the current study was to compare, under ordinary conditions of consumption, milk and a mineral water rich in Ca (480 mg/l) and in sulphates (1180 mg/l) as sources of Ca. Our hypothesis, which has been verified in animal models (Guéguen & Besançon, 1972;Whiting & Draper, 1980), was that a large quantity of the sulphates provided by water would have an acidogenic action, thus favouring the excretion of urinary Ca. Indeed, the SO 4 22 anions, which cannot be metabolised, are only slightly reabsorbed by the renal tubule and should be excreted in the urine in large quantities.…”

mentioning

confidence: 71%

“…This obligatory excretion of Ca comes from an increase in bone resorption, the bones' buffer capacity acting by liberating CO 3 and citrate ions in order to fight the acidosis (Barzel, 1995). However, in sheep, it has also been shown, using an isotopic kinetics method, that the increase in calciuria caused by sulphates corresponds to a decrease in bone accretion of absorbed Ca (Guéguen & Besançon, 1972).…”

Section: Urinary Camentioning

confidence: 99%

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Higher calcium urinary loss induced by a calcium sulphate-rich mineral water intake than by milk in young women

et al. 2005

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It is well known that the intestinal availability of Ca from Ca-rich mineral waters is equivalent to that of milk Ca. However, the effect of associated anions on Ca urinary loss needs to be addressed. The aim of the current study was to compare, under ordinary conditions of consumption, milk and a SO 4 -rich mineral water as the Ca provider in a large number of subjects consuming the same quantity of Ca from the two sources in a crossover study lasting for an extended period. Thirty-seven healthy women completed a 12-week protocol, divided into four periods of 3 weeks (W). In the first (W1-3) and third (W6 -9) periods, dietary Ca intake was restricted to 600 mg/d. In the second (W4 -6) and final (W10-12) periods, either 400 ml/d medium-fat milk or 1 litre of a Ca-and SO 4 -rich mineral water, each providing about 480 mg Ca/d, was added to the diet in a random manner. Dietary evaluation, blood and urinary measures were performed during the last week (W6 and W12) of each Ca supplementation period. The urinary excretion of Ca was higher (0·5 mmol/d more) with water than with milk (P, 0·001). An examination of all the dietary factors known to influence calciuria suggested that the acidogenic action of SO 4 was responsible for this increased calciuria. Thus, despite an equal Ca intake and assuming an unchanged intestinal absorption, these results suggest that Ca balance is better with milk consumption than with CaSO 4 -rich water.

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confidence: 71%

Section: Urinary Camentioning

confidence: 99%

Higher calcium urinary loss induced by a calcium sulphate-rich mineral water intake than by milk in young women

et al. 2005

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“…Indeed, an increase in of nembutal (50 mg/kg body weight). Blood was taken from the jugular vein for the determination of biochemi-calcium excretion has been observed when extracellular sulfate concentration increases [5,6,20,21]. Hypersulfa-cal parameters.…”

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confidence: 99%

Sulfate homeostasis, NaSi-1 cotransporter, and SAT-1 exchanger expression in chronic renal failure in rats

Fernandes¹,

Laouari²,

Tutt³

et al. 2001

Kidney International

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These results demonstrate that both NaSi-1 and Sat-1 total protein abundances are decreased in CRF, which may contribute to the increase in fractional sulfate excretion. Strikingly, NaSi-1 density was not decreased in CRF three weeks after Nx, and furthermore, increased six weeks after Nx, in contrast to NaPi-2 density, which was decreased at both times. The significance of this difference remains to be determined, but may explain why hypersulfatemia occurs earlier than hyperphosphatemia in CRF.

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“…urinary calcium in the pigs fed CaSO 4 . But, sulfates are believed to increase urinary calcium in humans [24,54], and this could prevent the incorporation of calcium into bone, as demonstrated in sheep [14]. Calciuria was not significantly elevated by CaSO 4 -rich mineral waters in short-term (36 h) studies on humans [5].…”

Section: Discussionmentioning

confidence: 99%

Availability of calcium from skim milk, calcium sulfate and calcium carbonate for bone mineralization in pigs

Pointillart¹,

Coxam²,

Sève

et al. 2000

Reprod. Nutr. Dev.

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-Dairy products provide abundant, accessible calcium for humans, while some calcium sulfate-rich mineral waters could provide appreciable amounts of calcium. But there is little evidence that this calcium is as available as milk calcium for making bone. The availability of calcium was studied by monitoring bone parameters in 2-month-old pigs fed restricted amounts of calcium (70% RDA) for 2.5 months. The 3 main (≥ 50% Ca intake) Ca sources were either CaCO 3 or CaSO 4 or skim milk powder (29% of the diet). The bones of the pigs fed the "milk" diet had higher (P < 0.01) ash contents, breaking strength and density (DEXA) than those of the two others groups, in which the bone values were similar. Thus, the calcium provided by a diet containing milk appears to ensure better bone mineralization than do calcium salts included in a non-milk diet. The calcium restriction may have enhanced some milk properties to stimulate calcium absorption in these young, rapidly growing pigs.calcium availability / calcium sulfate / milk calcium / bones / pigs Résumé -Biodisponibilité comparée du calcium du lait, du sulfate et du carbonate de calcium pour la minéralisation osseuse: étude chez le porc. Le sulfate de calcium, dont certaines eaux minérales sont riches, est-il aussi bien utilisé pour la minéralisation osseuse que le calcium des produits laitiers ? Trois lots de 8 porcs, de 2 mois, recevaient pendant 2,5 mois, trois régimes dont au moins 50 % de l'apport calcique était fourni par CaSO 4 , CaCO 3 ou la poudre de lait. Bien que différents dans leur composition, les trois régimes étaient formulés pour avoir la même valeur nutritionnelle et leur teneur en Ca était restreinte (70 % des recommandations). Avec le régime « lait », les cendres, la résistance à la rupture et la densité minérale des os étaient supérieures à celles des deux autres groupes, non différents l'un de l'autre. L'analyse des paramètres circulants liés au métabolisme osseux (en particulier au collagène), des 3 groupes, exclut l'hypothèse d'un effet direct de la source Reprod. Nutr. Dev. 40 (2000) 49-61 49

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Influence Des Sulfates Sur Le Métabolisme Phospho-Calcique. I. — Utilisation Du Sulfate De Calcium Par Le Mouton

Cited by 10 publications

References 0 publications

Higher calcium urinary loss induced by a calcium sulphate-rich mineral water intake than by milk in young women

Higher calcium urinary loss induced by a calcium sulphate-rich mineral water intake than by milk in young women

Sulfate homeostasis, NaSi-1 cotransporter, and SAT-1 exchanger expression in chronic renal failure in rats

Availability of calcium from skim milk, calcium sulfate and calcium carbonate for bone mineralization in pigs

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