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Calcium ATPase expression in the oviducts of the skink, Lampropholis guichenoti
- Source :
-
Comparative Biochemistry & Physiology Part A: Molecular & Integrative Physiology . Aug2007, Vol. 147 Issue 4, p1090-1094. 5p. - Publication Year :
- 2007
-
Abstract
- Abstract: Lampropholis guichenoti is an oviparous lizard that lays eggs with a calcareous outer shell. We used immunofluorescence microscopy to describe the occurrence and distribution of Ca2+ ATPase pumps in the uterus of L. guichenoti at different stages of the reproductive and egg-shelling cycles. Ca2+ ATPase pumps were not demonstrated by immunofluorescent techniques in any uterine tissue until egg-shelling had commenced and at least partly calcified eggs were in the uterus. During egg-shelling, Ca2+ ATPase pumps occur on the apical and baso-lateral surfaces of uterine epithelial cells, and those of associated shell glands in the stroma of the uterus. We conclude that Ca2+ ATPase pumps provide a major mechanism for deposition of the calcareous eggshell of L. guichenoti and that the pumps are up-regulated when required in the reproductive cycle. Furthermore, it is likely that specific calcium glands in the stroma of the uterus are involved in the rapid transport required for egg-shelling, but the differential contribution of luminal and glandular epithelial cells is not known. [Copyright &y& Elsevier]
- Subjects :
- *ADENOSINE triphosphatase
*UTERUS
*EPITHELIAL cells
*IMMUNOCYTOCHEMISTRY
Subjects
Details
- Language :
- English
- ISSN :
- 10956433
- Volume :
- 147
- Issue :
- 4
- Database :
- Academic Search Index
- Journal :
- Comparative Biochemistry & Physiology Part A: Molecular & Integrative Physiology
- Publication Type :
- Academic Journal
- Accession number :
- 25344795
- Full Text :
- https://doi.org/10.1016/j.cbpa.2007.03.029