+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Calcium homeostasis in the chick embryo

Calcium homeostasis in the chick embryo

Comparative Biochemistry & Physiology B 81(4): 975-980

The plasma concentrations of calcitonin, ionized Ca, inorganic P and hydroxylated metabolites of vitamin D (25-hydroxyvitamin D3, 24,25-dihydroxyvitamin D3, 25,26-dihydroxyvitamin D3 and 1,25-dihydroxyvitamin D) have been measured in chick embyros daily from day 16 of incubation until hatching (day 20/21) and in 1-, 2- and 7-day-old chicks. A significant positive correlation between calcitonin (N = 30, r = 0.73, P < 0.001) and significant negative correlation between calcitonin and 1,25-dihydroxyvitamin D (N = 29, r = -0.59, P < 0.001) and between ionized Ca and 1,25-dihydroxyvitamin D (N = 29, r = -0.46, P = < 0.05) have been observed in chick embryos. 25-Hydroxyvitamin D3 and 25,26-dihydroxyvitamin D3 showed minor changes while 24,25-dihydroxyvitamin D3 did not change throughout the period of study. Hypercalcitoninemia in the later stage of embryonic life may be a response to preserve Ca homeostasis by decreasing fetal bone resorption and a decrease in plasma 1,25-dihydroxyvitamin D during this period could be normal homeostatic response to hypercalcemia. No evidence was shown that calcitonin or hypophosphatemia stimulate 25-(OH)D-1-hydroxylase activity in chick embryo.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 001311547

Download citation: RISBibTeXText

DOI: 10.1016/0305-0491(85)90100-2

Related references

Role of calcitonin in calcium homeostasis in the chick embryo. Journal of Endocrinology 85(1): 171-185, 1980

Calcium homeostasis in mitochondrion-mediated apoptosis of chick embryo cecal epithelial cells induced by Eimeria tenella infection. Research in Veterinary Science 104: 166-173, 2016

Regulation of intracellular calcium in chick embryo fibroblast: calcium uptake by the microsomal fraction. Journal of Cellular Physiology 91(2): 289-296, 1977

Calcium handling by erythrocytes rbc of calcium deficient chick embryo. Journal of Cell Biology 109(4 PART 2): 305A, 1989

Alterations in cellular calcium handling as a result of systemic calcium deficiency in the developing chick embryo: I. Erythrocytes. Journal of Cellular Physiology 153(3): 626-635, 1992

Influence of diet on calcium homeostasis in the chick. Proceedings of the Cornell Nutrition Conference: 86-92, 1979

Effect of thrombin on calcium homeostasis in chick embryonic heart cells. Receptor-operated calcium entry with inositol trisphosphate and a pertussis toxin-sensitive G protein as second messengers. Journal of Clinical Investigation 85(5): 1436-1443, 1990

The effect of calcium ions and the calcium ionophore A23187 on choline uptake and phosphatidylcholine biosynthesis in chick embryo hearts. Basic Research in Cardiology 83(6): 664-671, 1988

Alterations in cellular calcium handling as a result of systemic calcium deficiency in the developing chick embryo: II. Ventricular myocytes. Journal of Cellular Physiology 153(3): 636-644, 1992

Role of calcium-dependent and calcium-independent mechanisms in the adhesion of retinal and pigment epithelium cells in the chick embryo. Ontogenez 16(2): 149-155, 1985

Effects of a forskolin like cardiotonic agent nkh 477 on calcium i transients contraction and calcium fluxes in cultured chick embryo ventricular myocytes. Japanese Circulation Journal 55(SUPPL A): 103, 1991

Homeostasis as regulated by activated macrophage. VIII. LPSw (a lipopolysaccharide from wheat flour) can regulate bone resorption of chick embryo. Chemical & Pharmaceutical Bulletin 40(5): 1271-1273, 1992

2,3,7,8-tetrachlorodibenzo-p-dioxin increases cardiac myocyte intracellular calcium and progressively impairs ventricular contractile responses to isoproterenol and to calcium in chick embryo hearts. Molecular Pharmacology 44(6): 1142-1151, 1993

Effects of furazolidone on intracellular pH and calcium homeostasis in chick cardiac myocytes. Pediatric Research 33(4 PART 2): 23A, 1993

Effect of estrogen on calcium homeostasis and pituitary hormones in the growing chick. General & Comparative Endocrinology 76(2): 261-266, 1989