Modification by food of the calcium absorbability and physicochemical effects of calcium citrate.
作者:
WabnerC L,
PakC Y,
期刊:
Journal of the American College of Nutrition
(Taylor Available online 1992)
卷期:
Volume 11,
issue 5
页码: 548-552
ISSN:0731-5724
年代: 1992
DOI:10.1080/07315724.1992.10718260
出版商: Routledge
关键词: NASA Discipline Regulatory Physiology;Non-NASA Center
数据来源: Taylor
摘要:
The food-calcium (Ca) interaction was examined in 12 healthy women (mean age 38 years) maintained on a constant metabolic diet. They underwent three phases of study, comprised of control (no Ca), Ca citrate (1 g Ca/day) during meals, and Ca citrate separately from meals. Each phase was 7 days in length and two 24-hour urine samples were collected on days 6 and 7. The rise from the control phase in urinary Ca was slightly more prominent when Ca citrate was given with meals than without (68 and 62%, respectively). The fall in urinary phosphorus was equivalent at about 25% between Ca citrate phases. The rise in urinary citrate and pH and the decline in urinary ammonium were more prominent when Ca citrate was given with meals; however, the changes were small or nonsignificant. The urinary saturation of Ca oxalate, brushite or monosodium urate did not differ between the two Ca citrate phases. There was a nonsignificant rise in serum iron during Ca citrate phases. The results suggest that: 1) dissolution and absorption of Ca citrate might be slightly greater when given with food than without; 2) that the ability of Ca citrate to attenuate crystallization of stone-forming Ca salts in urine is not modified by food; and 3) that Ca citrate may not impair iron absorption from food.
点击下载:
PDF (438KB)
返 回