The absorption and excretion of calcium and phosphorus by rats receiving excessive doses of irradiated ergosterol.
نویسنده
چکیده
منابع مشابه
Irradiated ergosterol and calcium-free diet: effect on calcium and phosphorus metabolism.
BROWN AND SHOHL [1930] and Watchorn [1930] have shown that large doses of irradiated ergosterol lead to a decreased retention of calcium in rats, in spite of the calcification of certain tissues which takes place at the same time. It has been noted also by Brown and Shohl [1930], Duguid, Duggan and Gough [1930] and by Harris [1930] that the severity of the symptoms of hypervitaminosis D corresp...
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For 4 weeks, 3-month old germfree (GF) and conventional (CV) rats were given a semi-synthetic diet sterilized by irradiation with or without 10% of lactose. During the 5th week, 0.2% of titanium oxide (TiO2) was added to the diet and the rats were killed at regular intervals throughout the light/dark cycle. The patterns of TiO2 and 45Ca excretion were similar, indicating that TiO2 was a good ma...
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In mammals, phosphocalcic and bone metabolisms are mainly regulated by parathyroid hormone, parathyroid hormone-related peptide (PTHrP) and 1α,25-dihydroxyvitamin D or calcitriol. In camels, circulating levels of calcitriol are 10 times higher than those determined in other ruminants and further increase during early lactation. Calcitriol and parathyroid-related peptide stimulate intestinal abs...
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ورودعنوان ژورنال:
- The Biochemical journal
دوره 24 3 شماره
صفحات -
تاریخ انتشار 2005