The ovary of Lagostomus maximus (Mammalia, Rodentia): an analysis by confocal microscopy
Biocell
;
35(2): 37-42, Aug. 2011. ilus, graf, tab
Article
Dans Anglais
| LILACS
| ID: lil-639623
ABSTRACT
Lagostomus maximus is a notable mammalian model for reproductive studies. Females have an extremely high ovulation rate, which is due to down-regulation of the follicular apoptosis pathway, which ensures a large pool of developing follicles. This large pool is supported by the convoluted anatomy of the mature ovary, whose germinal tissue is found in irregularly curved ridges throughout the cortex. Medullary tissue is restricted to a minimum. Lyso Tracker Red reconstruction under confocal laser scanning microscopy was used to recognize and measure all follicular stages from primordial to antral. Unlike most mammals in which early primordial follicles are just found in fetal life, the adult ovary shows regions packed with early primordial follicles. Follicle size ranged from 24 to 316 µm. We discuss the relationships of L. maximus follicles size with regard to other species of mammals and propose that the physiology of the adult viscacha ovary obeys to a neoteny process in the evolution of this species.
Texte intégral:
Disponible
Indice:
LILAS (Amériques)
Sujet Principal:
Ovaire
/
Rodentia
/
Microscopie confocale
/
Follicule ovarique
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Biocell
Thème du journal:
Clulas
Année:
2011
Type:
Article
Pays d'affiliation:
Argentine
Institution/Pays d'affiliation:
Universidad Maimónides/AR
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