Licht-im-Terrarium: Literaturdatenbank
Licht-im-Terrarium: Literaturdatenbank |
|
 |
|
Laing, C. J., & Fraser, D. R. (1999). The vitamin d system in iguanian lizards. Comparative Biochemistry and Physiology B, 123(4), 373–379. Added by: Sarina (2009-09-16 15:46:11) Last edited by: Sarina (2010-01-06 12:25:37) |
| Resource type: Journal Article DOI: 10.1016/S0305-0491(99)00081-4 BibTeX citation key: Laing1999a View all bibliographic details  |
Categories: Englisch = English Keywords: Echsen = Lizards, Reptilien = Reptiles, Vitamin D = Vitamin D Creators: Fraser, Laing Collection: Comparative Biochemistry and Physiology B |
Views: 4/1132 Views index: % Popularity index: 0.5% |
| Abstract |
|
The apparent plasma concentration of vitamin D binding protein (DBP) in an iguanian lizard, Pogona barbata, and the affinity of this protein for 25-hydroxyvitamin D3 (25(OH)D3), 25-hydroxyvitamin D2 (25(OH)D2), and 1,25-dihydroxyvitamin D3 (1,25(OH)D3) was found to resemble more closely that of the domestic hen than that of the human. The characteristics of Pogona DBP, the pattern of vitamin D metabolites derived from injected radioactive vitamin D3 and the plasma concentrations of endogenous 25-hydroxyvitamin D (25(OH)D) in a range of iguanian lizards have been examined. The findings suggest that 25-hydroxyvitamin D (25(OH)D) is the major metabolite of vitamin D, and that it may represent the storage form of vitamin D in these species in the same way as in mammals. High concentrations of vitamin D within iguanian embryos and egg yolks suggest a role for this compound in embryogenesis in these species, and perhaps indicates that there is a mechanism for vitamin D delivery to eggs comparable to that found in the domestic chicken. Author Keywords: Reptile; Squamate; Lizard; Pogona; Egg; Cholecalciferol; Vitamin D; Vitamin D binding protein Added by: Sarina Last edited by: Sarina |