The Interrelationship of Calcium, Phosphorus and Nitrogen in the Metabolism of Pre-School Children

Hawks, Jean E.; Bray, Merle M.; Wilde, Marjorie Olson; Dye, Marie; Wiltgen, Veda Hiller; Kilpatrick, A.

doi:10.1093/jn/24.3.283

Cited by 15 publications

(5 citation statements)

References 13 publications

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“…Of these other factors, the increase of acid metabolites in the body, the quantity of protein ingested, the calciumphosphorus intake ratio, dietary roughage, vitamin D, and the possible effects of intake of other salts have all been discussed as factors affecting urinary calcium (56)(57)(58)(59)(60)(61)(62)(63)(64)(65)(66)(67)(68)(69)(70)(71)(72)(73). The relative importance of these factors can now be evaluated.…”

Section: The Influence Of Dietary Factors Other Than Calcium Intakementioning

confidence: 99%

“…The results show consistent increase in urine Ca x 100 with increasing calcium to phosintake Ca phorus intake ratio and constant calcium intake. In some cases, the increases in urinary calcium (60) ], and wherein each subject served as his control. In these studies and in a study from our own laboratory (46), the diets were controlled by the addition of minerals where necessary, so that the calcium and phosphorus intakes and calcium to phosphorus ratios were held very nearly constant.…”

Section: The Influence Of Dietary Factors Other Than Calcium Intakementioning

confidence: 99%

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Factors Influencing the Urinary Excretion of Calcium. I. In Normal Persons1

Knapp¹

1947

J. Clin. Invest.

160

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Section: The Influence Of Dietary Factors Other Than Calcium Intakementioning

confidence: 99%

Section: The Influence Of Dietary Factors Other Than Calcium Intakementioning

confidence: 99%

Factors Influencing the Urinary Excretion of Calcium. I. In Normal Persons1

Knapp¹

1947

J. Clin. Invest.

160

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“…Results of earlier studies indicated that an increase in protein intake caused increases in urinary calcium and apparent absorption of calcium (1)(2)(3)(4), and the prevailing opinion has been that a high protein intake has a beneficial effect on calcium retention by causing an increase in calcium absorption.…”

Section: Discussionmentioning

confidence: 99%

Urinary calcium and calcium balance in young women affected by high protein diet of soy protein isolate and adding sulfur-containing amino acids and/or potassium.

Kaneko

Masaki

Aikyo

et al. 1990

Journal of Nutritional Science and Vitaminology, J Nutr Sci Vit

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SummaryThe effects of sulfur-containing amino acids (SAA) and potassium (K) on urinary excretion and retention of calcium (Ca) of 27 young Japanese women were studied. A basal diet low in protein level (50g per day) was fortified by meat or soy protein isolate (SPI) to a protein level of 100g per day, and effects of addition of apple to these high protein diets, and addition of SAA and/or potassium (K) to the high SPI diet, especially on urinary Ca excretion, were studied. The addition of meat which increased protein intake to 100g caused the increase in apparent absorption and urinary excretion of Ca with increased excretion of urinary sulfur (S), phosphate, ammonia, and titratable acids (TA), whereas addition of SPI did not. The addition of apple to high meat diet decreased absorption and urinary excretion of Ca. Urinary Ca, S, K, ammonia, and TA excretion increased by the addition of SAA to high SPI diet in a manner similar to the meat diet. Consequently, SAA-supplemented diet had a significantly negative effect on Ca retention. In SPI+SAA, K diet period, urinary K excretion markedly increased, and increments in urinary Ca, ammonia, and TA excretion were reversed. These changes observed in SPI+SAA, K diet period were similar to those by adding apple to meat diet without any effect on Ca absorption. The results suggest that the hypercalciuria induced by high meat diet is mainly caused by high content of SAA and may be reversed by the ingestion of K-rich foodstuffs, and soy protein does not induce hypercalciuria because of it contains less SAA than animal protein.

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“…Several investigators have reported a beneficial effect of a higher level of protein in the diet on calcium absorption [5,11], while there are others who have noted no improvement in calcium absorption by increasing the protein intake [6,14]. J o h n son el al.…”

Section: Discussionmentioning

confidence: 99%

Protein Nutrition and Calcium Absorption

Is¹

1974

Ann Nutr Metab

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Calcium absorption was investigated in young rats maintained on either high or low levels of protein in the diet and in adult rats, maintained on adequate diet to start with and then switching some on to a low-protein diet, employing in vivo and in vitro techniques. Results of the three techniques employed-(1) serum radioactivity after 1 h of gavage feeding ⁴⁵CaCl₂ solution, (2) ⁴⁵Ca uptake by duodenal slices after 1 h incubation in the medium containing ⁴⁵Ca, and (3) everted gut sac technique – indicated that the capacity of the intestine for calcium absorption in rats was not influenced by the level of protein in the diet.

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The Interrelationship of Calcium, Phosphorus and Nitrogen in the Metabolism of Pre-School Children

Cited by 15 publications

References 13 publications

Factors Influencing the Urinary Excretion of Calcium. I. In Normal Persons1

Factors Influencing the Urinary Excretion of Calcium. I. In Normal Persons1

Urinary calcium and calcium balance in young women affected by high protein diet of soy protein isolate and adding sulfur-containing amino acids and/or potassium.

Protein Nutrition and Calcium Absorption

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