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Tahamtan S, Tavalaee M, Izadi T, Barikrow N, Zakeri Z, Lockshin RA, Abbasi H, Nasr-Esfahani MH. Reduced sperm telomere length in individuals with varicocele is associated with reduced genomic integrity. Sci Rep 2019; 9:4336. [PMID: 30867501 PMCID: PMC6416405 DOI: 10.1038/s41598-019-40707-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Accepted: 02/15/2019] [Indexed: 01/09/2023] Open
Abstract
Varicocele, defined as enlarged varicose veins in the scrotum, is the most common identifiable cause of male infertility. There are significant correlations between oxidative stress and varicocele-related infertility due to testicular hyperthermia, which can result in low sperm function. In addition, recent excessive oxidative stress can affect sperm telomere length and integrity of sperm DNA. Therefore, we assessed sperm telomere length as a potential marker of paternal genome integrity and leukocyte telomere length as an internal control (real-time PCR), along with sperm chromatin status (TUNEL and chromomycin A3 assay), and lipid peroxidation (Bodipy probe) in 18 infertile men with grade II or III varicocele, and 20 fertile men. Means of sperm parameters, sperm and leukocyte telomere length were significantly lower, while means of sperm DNA fragmentation, protamine deficiency, and lipid peroxidation were significantly higher in infertile men with varicocele compared to fertile men. Therefore, shortened telomere length in sperm and leukocytes is likely associated with increased oxidative stress related to the state of varicocele, which also accounts for increase in sperm DNA fragmentation. Thus, assessment of leukocyte telomere length could be taken as an indicator of antioxidant capacity in an individual, which also affects sperm function.
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Affiliation(s)
- Sahar Tahamtan
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran.,Department of Molecular and Cellular Sciences, Faculty of Advanced Sciences & Technology, Pharmaceutical Sciences Branch, Islamic Azad University, (IAUPS), Tehran, Iran
| | - Marziyeh Tavalaee
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Tayebeh Izadi
- Department of Cellular Biotechnology, Cell Science Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran
| | - Nooshin Barikrow
- Department of Molecular and Cellular Sciences, Faculty of Advanced Sciences & Technology, Pharmaceutical Sciences Branch, Islamic Azad University, (IAUPS), Tehran, Iran
| | - Zahra Zakeri
- Department of Biology, Queens College and Graduate Center of the City University of New York, Flushing, New York, USA
| | - Richard A Lockshin
- Department of Biology, Queens College and Graduate Center of the City University of New York, Flushing, New York, USA.,Department of Biological Sciences, St. John's University, Jamaica, New York, USA
| | | | - Mohammad Hosseini Nasr-Esfahani
- Department of Reproductive Biotechnology, Reproductive Biomedicine Research Center, Royan Institute for Biotechnology, ACECR, Isfahan, Iran. .,Isfahan Fertility and Infertility Center, Isfahan, Iran.
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Feng D, Huang H, Yang Y, Yan T, Jin Y, Cheng X, Cui L. Ameliorative effects of N-acetylcysteine on fluoride-induced oxidative stress and DNA damage in male rats’ testis. MUTATION RESEARCH-GENETIC TOXICOLOGY AND ENVIRONMENTAL MUTAGENESIS 2015; 792:35-45. [DOI: 10.1016/j.mrgentox.2015.09.004] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 09/11/2015] [Accepted: 09/15/2015] [Indexed: 12/21/2022]
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