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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
medicine
Deoxyribonucleic acid repair and apoptosis in testicular germ cells of aging fertile men: the role of the poly(adenosine diphosphate-ribosyl)ation pathway
Fertility and Sterility, Volume 91, No. 5 SUPPL., Year 2009
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Description
Objective: To explore the relationship between men's age and DNA damage repair proteins related to apoptosis in human testicular germ cells. Design: Retrospective case-control study. Setting: Academic institutions. Patient(s): Testicular specimens were obtained from 22 fertile volunteers aged 20-82 years. Intervention(s): Deoxyribonucleic acid repair markers were assessed using immunohistochemical staining for the cell proliferation marker [proliferating cell nuclear antigen (PCNA)]; DNA repair markers [poly(adenosine diphosphate-ribose) polymerase-1 (PARP-1), poly(adenosine diphosphate-ribose) (PAR), X-ray repair cross-complementing1(XRCC1), and apurinic/apyrimidinic endonuclease 1 (APE1)]; and apoptosis-associated markers (caspase 9, active caspase 3, and cleaved PARP-1). Main Outcome Measure(s): The prevalence and cellular localization of the above markers in testicular tissues of young, middle aged, and old men. Result(s): Statistically significant differences in DNA damage repair-associated proteins (PARP-1, PAR, XRCC1, and APE1), and apoptosis markers (caspase 9, active caspase 3, and cleaved PARP-1) were observed in testicular samples from older men. These differences were most marked in spermatocytes. Conclusion(s): The study demonstrates that there is an age-related increase in human testicular germ cell DNA break repair and apoptosis with age. © 2009 American Society for Reproductive Medicine.
Authors & Co-Authors
El-Domyati, Moetaz M.M.
Egypt
Al-minya Faculty of Medicine
al-Din, Abo Bakr M.
Egypt
Al-minya Faculty of Medicine
Barakat, Manal T.
Egypt
Al-minya Faculty of Medicine
El-Fakahany, Hasan M.
Egypt
Al-minya Faculty of Medicine
United States, New Haven
Yale School of Medicine
Xu, Jiasen
United States, New Haven
Yale School of Medicine
Sakkas, Denny
United States, New Haven
Yale School of Medicine
Statistics
Citations: 43
Authors: 6
Affiliations: 2
Identifiers
Doi:
10.1016/j.fertnstert.2008.03.027
ISSN:
00150282
Research Areas
Cancer
Genetics And Genomics
Health System And Policy
Sexual And Reproductive Health
Study Design
Randomised Control Trial
Cross Sectional Study
Cohort Study
Case-Control Study
Participants Gender
Male