Document Detail

The developing human ovary: immunohistochemical analysis of germ-cell-specific VASA protein, BCL-2/BAX expression balance and apoptosis.
MedLine Citation:
PMID:  18534994     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Germ cell number during ovarian organogenesis is regulated through programmed cell death. We investigated the expression of germ-cell-specific VASA protein, apoptosis-related proteins BAX and BCL-2 and DNA fragmentation in developing human ovaries from gestation week 12 to term. METHODS: Human fetal ovaries from 13 women undergoing spontaneous abortion were fixed, paraffin-embedded and processed for immunohistochemistry to analyse temporal and cellular localization of VASA, BCL-2 and BAX, and to detect apoptosis by TUNEL assay. RESULTS: VASA showed a differential pattern of expression throughout the differentiation and proliferative phase and prophase I to finally associate with Balbiani's body in primordial and primary follicles. BCL-2 was detected from week 12 to 17 and became undetectable thereafter. Strong BAX signal was detected in oogonia and oocytes from week 12 to term. Low levels (<or=10%) of TUNEL positive germ cells were detectable throughout gestation with a higher incidence (around 20%) at 18-20 weeks. CONCLUSIONS: VASA was specifically expressed in germ cells and displayed a stage-specific intracellular localization enabling one to follow oogenesis throughout gestation. Apoptosis-inhibiting BCL-2 was associated with the germ cell proliferative phase and prophase I, whereas BAX remained positive throughout gestation. The highest incidence of apoptotic germ cells was coincident with the lack of detectable BCL-2 protein, and when primordial follicle formation became widespread.
Mirta S Albamonte; Miguel A Willis; María I Albamonte; Federico Jensen; María B Espinosa; Alfredo D Vitullo
Related Documents :
20336484 - Ginsenoside rb1 and rg3 attenuate glucocorticoid-induced neurotoxicity.
7907274 - C. elegans cell survival gene ced-9 encodes a functional homolog of the mammalian proto...
16638644 - Oridonin inhibits cell growth by induction of apoptosis on human hepatocelluar carcinom...
17880494 - The death of human cancer cells following photodynamic therapy: apoptosis competence is...
19440374 - Exploring functional beta-cell heterogeneity in vivo using psa-ncam as a specific marker.
22020074 - Quantitative analysis of ascorbic acid permeability of aquaporin 0 in the lens.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-06-04
Journal Detail:
Title:  Human reproduction (Oxford, England)     Volume:  23     ISSN:  1460-2350     ISO Abbreviation:  Hum. Reprod.     Publication Date:  2008 Aug 
Date Detail:
Created Date:  2008-07-18     Completed Date:  2008-09-29     Revised Date:  2009-11-19    
Medline Journal Info:
Nlm Unique ID:  8701199     Medline TA:  Hum Reprod     Country:  England    
Other Details:
Languages:  eng     Pagination:  1895-901     Citation Subset:  IM    
Departamento de Estudios Biomédicos y Biotecnológicos, Centro de Estudios Biomédicos, Biotecnológicos, Ambientales y Diagnóstico, CEBBAD, Universidad Maimónides, Hidalgo 775, C1405BCK Buenos Aires, Argentina.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Abortion, Spontaneous
Apoptosis / physiology*
DEAD-box RNA Helicases / metabolism*
DNA Fragmentation
Germ Cells / chemistry*
In Situ Nick-End Labeling
Ovary / cytology,  embryology*
Proto-Oncogene Proteins c-bcl-2 / metabolism*
bcl-2-Associated X Protein / metabolism*
Reg. No./Substance:
0/Proto-Oncogene Proteins c-bcl-2; 0/bcl-2-Associated X Protein; EC 3.6.1.-/DDX4 protein, human; EC 3.6.1.-/DEAD-box RNA Helicases

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Spatiotemporal analysis of auditory "what" and "where" working memory.
Next Document:  Sniffing behavior of mice during performance in odor-guided tasks.