1. Sharma R, Agarwal A, Rohra VK, Assidi M, Abu-Elmagd M, Turki RF. Effects of increased paternal age on sperm quality, reproductive outcome and associated epigenetic risks to offspring. Reprod Biol Endocrinol 2015; 13: 35-45. [
DOI:10.1186/s12958-015-0028-x]
2. Brahem S, Mehdi M, Elghezal H, Saad A. The effects of male aging on semen quality, sperm DNA fragmentation and chromosomal abnormalities in an infertile population. J Assist Reprod Genet 2011; 28: 425-432. [
DOI:10.1007/s10815-011-9537-5]
3. Agarwal A, Makker K, Sharma R. Clinical relevance of oxidative stress in male factor infertility: an update. Am J Reprod Immunol 2008; 59: 2-11. [
DOI:10.1111/j.1600-0897.2007.00559.x]
4. Broer L, Codd V, Nyholt DR, Deelen J, Mangino M, Willemsen G, et al. Meta-analysis of telomere length in 19,713 subjects reveals high heritability, stronger maternal inheritance and a paternal age effect. Eur J Hum Genet 2013; 21: 1163-1168. [
DOI:10.1038/ejhg.2012.303]
5. Curley JP, Mashoodh R, Champagne FA. Epigenetics and the origins of paternal effects. Horm Behav 2011; 59: 306-314. [
DOI:10.1016/j.yhbeh.2010.06.018]
6. Alio AP, Salihu HM, McIntosh C, August EM, Weldeselasse H, Sanchez E, et al. The effect of paternal age on fetal birth outcomes. Am J Mens Health 2012; 6: 427-435. [
DOI:10.1177/1557988312440718]
7. Aitken RJ, De Iuliis GN, McLachlan RI. Biological and clinical significance of DNA damage in the male germ line. Int J Androl 2009; 32: 46-56. [
DOI:10.1111/j.1365-2605.2008.00943.x]
8. Emokpae MA, Uadia PO. Potential risk of senescence on male fertility and sperm DNA damage on progeny. Trop J Nat Prod Res 2017; 1: 58-62. [
DOI:10.26538/tjnpr/v1i2.3]
9. World Health Organization. WHO laboratory manual for the examination and processing of human semen. 5th Ed. Geneva, World Health Organization; 2010.
10. Aitken RJ, Baker MA. Causes and consequences of apoptosis in spermatozoa: contributions to infertility and impacts on development. Int J Dev Biol 2013; 57: 265-272. [
DOI:10.1387/ijdb.130146ja]
11. Li YJ, Somg TB, Cai YY, Zhou JS, Song X, Zhao X, et al. Bisphenol A exposure induces apoptosis and upregulation of Fas/FasL and caspase-3 expression in the testes of mice. Toxicol Sci 2009; 108: 427-436. [
DOI:10.1093/toxsci/kfp024]
12. Alam MS, Ohsako S, Tay TW, Tsunekawa N, Kanai Y, Kurohmaru M. Di(n-butyl) phthalate induces vimentin filaments disruption in rat sertoli cells: a possible relation with spermatogenic cell apoptosis. Anat Histol Embryol 2010; 39: 186-193. [
DOI:10.1111/j.1439-0264.2010.00993.x]
13. Shaha C, Tripathi R, Mishra DP. Male germ cell apoptosis: regulation and biology. Philos Trans R Soc Lond B Biol Sci 2010; 365: 1501-1515. [
DOI:10.1098/rstb.2009.0124]
14. Colin A, Barroso G, Gomez-Lopez N, Duran EH, Oehninger S. The effect of age on the expression of apoptosis biomarkers in human spermatozoa. Fertil Steril 2010; 94: 2609-2614. [
DOI:10.1016/j.fertnstert.2010.04.043]
15. Uriondo C, Sedo A, Gil MV, Frazer P, Serna J, Nodar F. Severe Teratozoospermia and male age increase levels of sperm apoptosis in infertile patients. Fertil Steril 2011; 96 (Suppl.): S72. [
DOI:10.1016/j.fertnstert.2011.07.275]
16. Emokpae MA, Chima HN, Ahmed M. Seminal plasma caspase 3, cytochrome c and total antioxidant capacity in oligospermic males and association with sperm indices. J Exp Integr Med 2016; 6: 1-4. [
DOI:10.5455/jeim.091116.or.164]
17. Uadia PO, Emokpae MA. Male infertility in Nigeria: A neglected Reproductive Health issue requiring attention. J Basic Clin Reprod Sci 2015; 4: 45-53. [
DOI:10.4103/2278-960X.161042]
18. Schmid TE, Eskenazi B, Baumgartner A, Marchetti F, Young S, Weldon R, et al. The effects of male age on sperm DNA damage in healthy non-smokers. Hum Reprod 2007; 22: 180-187. [
DOI:10.1093/humrep/del338]
19. Barroso G, Morshedi M, Oehninger S. Analysis of DNA fragmentation, plasma membrane translocation of phosphatidylserine and oxidative stress in human spermatozoa. Hum Reprod 2000; 15: 1338-1344. [
DOI:10.1093/humrep/15.6.1338]
20. Sloter E, Nath J, Eskenazi B, Wyrobek AJ. Effects of male age on the frequencies of germinal and heritable chromosomal abnormalities in humans and rodents. Fertil Steril 2004; 81: 925-943. [
DOI:10.1016/j.fertnstert.2003.07.043]
21. Brinkworth MH, Schmid TE. Effect of age on testicular germ cell apoptosis and sperm aneuploidy in MF-1 mice. Teratog Carcinog Mutagen 2003; 2 (Suppl.): 103-109. [
DOI:10.1002/tcm.10085]
22. Palmer NO, Bakos HW, Owens JA, Setchell BP, Lane M. Diet and exercise in an obese mouse fed a high-fat diet improve metabolic health and reverse perturbed sperm function. Am J Physiol Endocrinol Metab 2012; 302: E768-780. [
DOI:10.1152/ajpendo.00401.2011]
23. Linschooten JO, Laubenthal J, Cemeli E, Baumgartner A, Anderson D, Sipinen VE, et al. Incomplete protection of genetic integrity of mature spermatozoa against oxidative stress. Reprod Toxicol 2011; 32: 106-111. [
DOI:10.1016/j.reprotox.2011.05.004]
24. Almeida C, Sousa M, Barros A. Phosphatidylserine translocation in human spermatozoa from impaired spermatogenesis. Reprod Biomed Online 2009; 19: 770-777. [
DOI:10.1016/j.rbmo.2009.10.002]
25. Johnson L, Thompson DL, Varner DD. Role of sertoli cell number and function on regulation of spermatogenesis. Anim Reprod Sci 2008; 105: 23-51. [
DOI:10.1016/j.anireprosci.2007.11.029]
26. Uadia PO, Emokpae MA. Implications of Oxidative Stress on Male Infertility. Trans Niger Soc Biochem Mol Biol 2015; 1: 19-29.
27. Agarwal A, Sekhon LH. Oxidative stress and antioxidants for idiopathic oligoasthenoteratospermia: Is it justified? Indian J Urol 2011; 27: 74-85. [
DOI:10.4103/0970-1591.78437]
28. Mukhopadhyay D, Varghese AC, Pal M, Banerjee SK, Bhattacharyya AK, Sharma RK, et al. Semen quality and age-specific changes: a study between two decades on 3,729 male partners of couples with normal sperm count and attending an andrology laboratory for infertility-related problems in an Indian city. Fertil Steril 2010; 93: 2247-2254. [
DOI:10.1016/j.fertnstert.2009.01.135]
29. Stone BA, Alex A, Werlin LB, Marrs RP. Age thresholds for changes in semen parameters in men. Fertil Steril 2013; 100: 952-958. [
DOI:10.1016/j.fertnstert.2013.05.046]
30. Jara M, Carballada R, Esponda P. Age-induced apoptosis in the male genital tract of the mouse. Reproduction 2004; 127: 359-366. [
DOI:10.1530/rep.1.00092]
31. Aziz N, Said T, Paasch U, Agarwal A. The relationship between human sperm apoptosis,morphology and the sperm deformity index. Hum Reprod 2007; 22: 1413-1419. [
DOI:10.1093/humrep/dem016]
32. Fathi Najafi T, Hejazi M, Feryal Esnaashari F, Sabaghiyan E, Hajibabakashani S, Yadegari Z. Assessment of sperm apoptosis and semen quality in infertile men-Meta Analysis. Iran Red Crescent Med J 2012; 14: 182-183.