| Ultrastructural changes in the follicular epithelium of Ceratophrys cranwelli previtellogenic oocytes. | |
| | |
MedLine Citation:
|
PMID: 17637109 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
In this work we carried out ultrastructural, autoradiographic and biochemical analyses of the follicular epithelium during C. cranwelli previtellogenesis. This study revealed that the follicular epithelium in early previtellogenesis is constituted of a single layer of squamous homogeneous cells. During mid-previtellogenesis two types of cells develop: dark cells and clear cells. The follicular dark cells are actively involved in the synthesis of RNA, which is transferred to the oocyte through the interface. In late previtellogenesis the dark cells show apoptotic characteristics such as chromatin condensation, DNA fragmentation and cytoplasm shrinkage. This process forms apoptotic bodies that seem to be engulfed by the oocyte. Our results show evidence that, during mid- and late C. cranwelli previtellogenesis, the follicular epithelium undergoes remodelling processes interacting with the oocyte. |
| | |
Authors:
|
E I Villecco; M E Mónaco; S S Sánchez |
Related Documents
:
|
16425229 - Denuding and centrifugation of maturing bovine oocytes alters oocyte spindle integrity ... 11453109 - Aryl hydrocarbon receptor (ahr)-linked inhibition of luteal cell progesterone secretion... 18498089 - Id2, id3, and id4 proteins show dynamic changes in expression during vibrissae follicle... 11058539 - Identification of potassium-dependent and -independent components of the apoptotic mach... 8365349 - Solitary and synaptonemal complex-associated recombination nodules in pro-nurse cells d... 1036339 - Post ovulatory follicles of the domestic duck. 8824789 - Sacrifice in the face of foes: pathogen-induced programmed cell death in plants. 9352129 - The tumor-derived fetal-intestinal alkaline phosphatase cdna is identical in sequence t... 20541599 - Cellular responses by stable and uniform ultrafine titanium dioxide particles in cultur... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Zygote (Cambridge, England) Volume: 15 ISSN: 0967-1994 ISO Abbreviation: Zygote Publication Date: 2007 Aug |
Date Detail:
|
Created Date: 2007-07-19 Completed Date: 2007-10-01 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 9309124 Medline TA: Zygote Country: England |
Other Details:
|
Languages: eng Pagination: 273-83 Citation Subset: IM |
Affiliation:
|
Departamento de Biología del Desarrollo, Instituto Superior de Investigaciones Biológicas, Consejo Nacional de Investigaciones Científicas y Técnicas y Universidad Nacional de Tucumán, Chacabuco 461, 4000, San Miguel de Tucumán, Tucumán, Argentina. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Animals Anura Epithelium / ultrastructure Female Microscopy, Electron, Transmission Oocytes / ultrastructure* Ovarian Follicle / ultrastructure* Vitellogenesis* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Structural and ultrastructural characteristics of the yolk syncytial layer in Prochilodus lineatus (...
Next Document: Molecular targets for disrupting leukocyte trafficking during multiple sclerosis.