Regulation of serum calcitriol by serum ionized calcium in rats during pregnancy and lactation

Journal of Bone and Mineral Research

Volumn 12, Issue 6, 1997, Pages 909-914

  Boass, Agna ^a   Garner, Sanford C ^b   Schultz, Vijitha L ^a   Toverud, Svein U ^a,c  

^a UNIVERSITY OF NORTH CAROLINA SCHOOL OF MEDICINE   (United States)

^b DUKE UNIVERSITY MEDICAL CENTER   (United States)

^c UNIVERSITY OF NORTH CAROLINA   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

CALCITRIOL; CALCIUM ION; PARATHYROID HORMONE;

ANIMAL EXPERIMENT; ANIMAL TISSUE; ARTICLE; BONE MINERALIZATION; CALCIUM BLOOD LEVEL; CALCIUM HOMEOSTASIS; CALCIUM INTAKE; CONTROLLED STUDY; FEMALE; FETUS; FETUS GROWTH; FETUS WEIGHT; LACTATION; NONHUMAN; PREGNANCY; RAT;

ANIMALS; BODY WEIGHT; CALCITRIOL; CALCIUM; FEMALE; FETUS; HOMEOSTASIS; LACTATION; PARATHYROID HORMONE; PREGNANCY; PREGNANCY, ANIMAL; RATS; TIME FACTORS;

EID: 0030985269     PISSN: 08840431     EISSN: None     Source Type: Journal    
DOI: 10.1359/jbmr.1997.12.6.909     Document Type: Article

References (26)

1. Boass A, Toverud SU, McCain TA, Pike JW, Haussler MR 1977 Elevated serum levels of 1α,25-dihydroxycholecalciferol in lactating rats. Nature 267:630-632.
2. Halloran BP, Barthell EN, DeLuca HF 1979 Vitamin D metabolism in pregnancy and lactation in the rat. Proc Natl Acad Sci USA 76:5549-5553.
3. 3 in lactating rats. Am J Physiol 259:E665-E671.
4. Lobaugh B, Boass A, Garner SC, Toverud SU 1992 Intensity of lactation modulates renal 1α-hydroxylase and serum 1,25-dihydroxyvitamin D in the rat. Am J Physiol 262:E840-E844.
5. Lobaugh B, Garner SC, Lovdal JA, Boass A, Toverud SU 1993 Parathyroidectomy abolishes the increase of renal 25-hydroxyvitamin D-1α-hydroxylase in lactating rats. Am J Physiol 264;E981-E985.
6. 3 synthesis in isolated chick renal mitochondria. The role of calcium as influenced by inorganic phosphate and hydrogen ion. J Clin Invest 55:299-304.
7. Hove K, Horst RL, Littledike ET, Beitz DC 1984 Infusions of parathyroid hormone in ruminants: hypercalcemia and reduced plasma 1,25-dihydroxyvitamin D concentrations. Endocrinology 114:897-903.
8. 3-1α-hydroxylase to PTH in rats. Am J Physiol 253: E503-E507.
9. 3 by calcium in the parathyroidectomized, parathyroid hormone-replete rat. J Bone Miner Res 4:929-935.
10. Fraser DR 1980 Regulation of the metabolism of vitamin D. Physiol Rev 60:551-615.
11. Schultz VL, Garner SC, Lavigne JR, Toverud SU 1994 Determination of bioactive rat parathyroid hormone (PTH) concentrations in vivo and in vitro by a 2-site homologous immunoradiometric assay. Bone Miner 27:121-132.
12. Toverud SU, Boass A, Garner SC, Endres DB 1987 Circulating parathyroid hormone concentrations in normal and vitamin D-deprived rat pups determined with an N-terminal-specific radioimmunoassay. Bone Miner 1:145-155.
13. Pike JW, Parker JB, Haussler MR, Boass A, Toverud SU 1979 Dynamic changes in circulating 1,25-dihydroxyvitamin D during reproduction in rats. Science 204:1427-1429.
14. Boass A, Lovdal JA, Toverud SU 1992 Pregnancy- and lactation-induced changes in active intestinal calcium transport in rats. Am J Physiol 263:G127-G134.
15. Boass A, Toverud SU 1995 Suppression of circulating calcitriol and duodenal active Ca transport by ketoconazole in pregnant rats. Am J Physiol 269:E934-E939.
16. Reinhardt TA, Horst RL, Orf JW, Hollis BW 1984 A microassay for 1,25-dihydroxyvitamin D not requiring high performance liquid chromatography: Application to clinical studies. J Clin Endocrinol Metab 58:91-98.
17. Schultz VL, Boass A, Toverud SU, Garner SC 1995 Elevated serum parathyroid hormone concentrations in rats under pentobarbital or methoxyflurane but not under ether or ketamine anesthesia. J Bone Miner Res 10:1298-1302.
18. Schultz VL, Boass A, Garner SG, Toverud SU Altered regulation of parathyroid hormone secretion by calcium in pregnant and lactating rats. J Bone Miner Res 12:903-908.
19. Wright HV, Asling CW, Dougherty HL, Nelson MM, Evans HM 1958 Prenatal development of the skeleton in Long-Evans rats. Anat Rec 130:659-669.
20. Cripps AW, Williams VJ 1975 The effect of pregnancy and lactation on food intake, gastrointestinal anatomy and the absorptive capacity of the small intestine in the albino rat. Br J Nutr 33:17-32.
21. Boass A, Toverud SU 1996 Duodenal active calcium transport in female rats increases with serum calcitriol concentrations, but reaches a plateau far below maximal calcitriol levels. J Bone Miner Res 11:1640-1645.
22. 3 independently of parathyroid hormone and phosphorus in the rat. J Clin Invest 76:1599-1604.
23. Trechsel U, Eisman JA, Fischer JA, Bonjour J-P, Fleisch H 1980 Calcium-dependent, parathyroid hormone-independent regulation of 1,25-dihydroxyvitamin D. Am J Physiol 239: E119-E124.
24. Garabedian M, Holick MF, DeLuca HF, Boyle IT 1972 Control of 25-hydroxycholecalciferol metabolism by parathyroid glands. Proc Natl Acad Sci USA 69:1673-1676.
25. Fraser DR, Kodicek E 1973 Regulation of 25-hydroxycholecalciferol-1-hydroxylase activity in kidney by parathyroid hormone. Nature New Biol 241:163-166.
26. 3 levels in rats. Am J Physiol 262:E211-E215.