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Ovarian melanotropic peptides and adaptation in two teleostean species: Sparus aurata L. and Dicentrarchus labrax L.
- Source :
-
Peptides [Peptides] 1994; Vol. 15 (5), pp. 927-31. - Publication Year :
- 1994
-
Abstract
- The ovarian tissue of Dicentrarchus labrax and Sparus aurata displays two immunoreactive peaks that correspond to the elution time of human des-acetyl alpha-MSH [ACTH(1-13)-amide] and human alpha-MSH. In view of the close identity between the primary structure of fish and human alpha-MSH, these data demonstrate that two MSH-related peptides are present both in sea bream and sea bass ovary. alpha-MSH-like immunoreactivity was found within both granulosa and thecal layers of mature follicles, as well as in the cytoplasm of oogonia of sea bream and sea bass ovary. Gonadal content of ACTH(1-13)-amide and alpha-MSH display differences with regard to season, showing the highest peptide levels in reproductive animals. Moreover, the alpha-MSH content is significantly higher in the ovary of fish farm animals, whereas that of ACTH(1-13)-amide prevails in wild fish ovary.
- Subjects :
- Animals
Animals, Wild
Chromatography, High Pressure Liquid
Female
Fluorescent Antibody Technique
Melanocyte-Stimulating Hormones
Radioimmunoassay
Seasons
Species Specificity
Adaptation, Physiological
Bass metabolism
Ovary chemistry
Peptide Fragments analysis
Perciformes metabolism
alpha-MSH analogs & derivatives
alpha-MSH analysis
Subjects
Details
- Language :
- English
- ISSN :
- 0196-9781
- Volume :
- 15
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Peptides
- Publication Type :
- Academic Journal
- Accession number :
- 7984515
- Full Text :
- https://doi.org/10.1016/0196-9781(94)90052-3