Volume 6, Issue 5 (7-2008)                   IJRM 2008, 6(5): 187-192 | Back to browse issues page

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Haidari K, Salehnia M, Rezazadeh Valojerdi M, Pourbyranvand S. Ultrastructural study of isolated mouse preantral follicles co-cultured with cumulus cells with leukemia inhibitory factor. IJRM 2008; 6 (5) :187-192
URL: http://ijrm.ir/article-1-130-en.html
Ultrastructural study of isolated mouse preantral follicles co-cultured with cumulus cells with leukemia inhibitory factor
Kamran Haidari1 , Mojdeh Salehnia * 2, Mojtaba Rezazadeh Valojerdi1 , Shahram Pourbyranvand1
1- Department of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran
2- Department of Anatomy, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, Iran , mogdeh@dr.com
Abstract:   (2492 Views)
Background: The ultrastructural analysis of cultured follicles could direct us to understand subcellular changes during in vitro culture.
Objective: This study was done to verify the ultrastructural characteristics of in vitro cultured mouse isolated preantral follicles in co-culture system in the presence and absence of leukemia inhibitory factor (LIF)
Materials and Methods: Mechanically isolated preantral follicles were divided into four groups: control without LIF, control with LIF, co-cultured group with LIF, co-cultured group without LIF. In co-culture groups the follicles were cultured with cumulus cells. After 4 days the follicles were processed and sectioned for transmission electron microscopic examination.
Results: The oocytes of cultured preantral follicles in all studied groups demonstrated a homogeneous cytoplasm and they had the round or ovoid shaped mitochondria with light matrix and cristae. Their endoplasmic reticulum cisternae were in association with mitochondria and Golgi complex. The cortical granules and the aggregation of mitochondria around the germinal vesicle were prominent in both co-cultured groups. The organelle distribution in granulosa cells was normal in all groups of study and no sign of cell death was observed. In both co-cultured systems the granulosa cells contained mitochondria with tubular cristae, a well developed smooth endoplasmic reticulum and several large lipid droplets, characteristics of steroid synthesis cells. Conclusion: The oocyte and granulosa cells in co-cultured system showed more remarkable maturation features than that of control.
Keywords: Co-culture, In vitro maturation, Leukemia inhibitory factor, Mouse preantral follicle, Ultrastructure
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Type of Study: Original Article |
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