Vitamin E, Vitamin A, and carotenoids in male common lizard tissues

Détails

ID Serval
serval:BIB_7904B99A758C
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Vitamin E, Vitamin A, and carotenoids in male common lizard tissues
Périodique
Herpetologica
Auteur(s)
San-Jose L.M., Granado-Lorencio F., Fitze P.S.
ISSN
0018-0831
Statut éditorial
Publié
Date de publication
2012
Peer-reviewed
Oui
Volume
68
Numéro
1
Pages
88-99
Langue
anglais
Résumé
Vitamin E, vitamin A, and carotenoids are essential micronutrients for animals because of their antioxidant and immunostimulant functions and their implications for growth, development, and reproduction. In contrast to mammals and birds, information about their occurrence and distribution is generally lacking in reptiles, constraining our understanding of the use of these micronutrients. Using high-performance liquid chromatography, we determined the concentrations of vitamin E, vitamin A, and carotenoids in plasma, storage sites (liver and abdominal fat bodies), and in the colored ventral skin of male Common Lizards, Lacerta vivipara. All tissues shared a similar micronutrient profile, except the liver, which also showed traces of vitamin A(1). The main vitamin E compound present was a-tocopherol followed by lower concentrations of gamma-(beta-)tocopherol. Vitamin A(2) was the main vitamin A compound and it showed the highest concentration in the liver, where vitamin A(2) esters and traces of vitamin A(1) were found. Lutein was the main carotenoid, and it formed esters in the liver and the ventral skin. Zeaxanthin and low concentrations of beta-carotene were also present. The liver was the main storage site for carotenoid and vitamin A, whereas hepatic vitamin E concentrations resembled those present in abdominal Fat bodies. Compared with abdominal fat bodies, the ventral skin contained lower concentrations of vitamin A and vitamin E, but similar concentrations of carotenoicls. These results suggest that important differences exist in micronutrient presence, concentration, and distribution among tissues of lizards and other taxa such as birds and mammals.
Mots-clé
Coloration, Dehydroretinol, Nutrition, Oxidative stress, Retina, Squamata, Vitamin A metabolism, Xanthophylls
Web of science
Création de la notice
26/10/2011 11:13
Dernière modification de la notice
20/08/2019 15:35
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