• sperm
  • However, the aim of this study was to evaluate the frequency and type of major chromosomal abnormalities in the infertile men with problems in their sperm count, who had been referred to cytogenetic center in Shiraz, the main referral center in southern Iran. (medcraveonline.com)
  • This study will analyse the sperm global methylation status of 62 infertile men before assisted reproductive techniques. (clinicaltrials.gov)
  • The objective of this research is to determine the frequency of arisen the abnormalities of methylation at the level of the locus H19 in the sperm cells of barren men presenting an unexplained oligozoospermia and to determine if these changes are a reflection of abnormalities of the profiles of methylation of the whole genome. (clinicaltrials.gov)
  • A 2017 review and meta-analysis found sperm counts among Western men (i.e. men in Australia, Europe, New Zealand, and North America) declined 50-60% between 1973 and 2011, with an average decline of 1.4% per year. (wikipedia.org)
  • The decline in sperm count among men in South America, Asia, and Africa is less than men in Western countries, though the amount of decline in these regions is uncertain. (wikipedia.org)
  • Although it is possible for men to father children into old age, the genetic quality of sperm, as well as its volume and motility, all typically decrease with age. (wikipedia.org)
  • In other words, older sperm are less likely to result in a successful pregnancy and, moreover, the cumulative fragmentation of sperm DNA over time increases the likelihood that a small fraction of men will pass on achondroplasia and transmit multiple genetic and chromosomal defects. (wikipedia.org)
  • For example, the percentage of sperm with highly damaged DNA, comet extent, DNA break number, and other comet measures has been found to be significantly higher in men aged 36-57 years than in those aged 20-35 years. (wikipedia.org)
  • In men with a normal level of sperm production (normozoospermia), the percentage of sperm DNA fragmentation is positively correlated with age, and inversely correlated with progressive sperm motility. (wikipedia.org)
  • While advanced age can be a possible factor in sperm motility and health, the sperm of men below 20 years of age has likewise been linked to an increase in birth defects such as neural tube defects, hypospadias, cystic kidney, and Down syndrome. (wikipedia.org)
  • Men with positive M. genitalium RNA and U. urealyticum RNA had higher sperm DNA fragmentation index (DFI) while the comparisons of other semen parameters yielded nonsignificant results between the RNA positive and negative group. (biomedcentral.com)
  • U. urealyticum and M. genitalium infection could possibly impair male fertility potential through promoting sperm DNA damage. (biomedcentral.com)
  • patients
  • Add to these patients the countless numbers of adolescents, young and middle aged men, and athletes using AAS for cosmetic and athletic enhancement the potential population of at risk men numbers well over one million. (thinksteroids.com)
  • prevalence
  • The purpose of this study was to evaluate the prevalence of Chlamydia trachomatis , Neisseria gonorrhoeae , Mycoplasma genitalium and Ureaplasma urealyticum infections in infertile men that consulted our outpatient departments using a novel simultaneous amplification testing (SAT) that is RNA-detection based. (biomedcentral.com)
  • To the best of our knowledge, there is no data available published regarding the prevalence of C. trachomatis , N. gonorrhoeae , M. genitalium and U. urealyticum in infertile men using this novel SAT method. (biomedcentral.com)
  • found
  • For example, one study of 943,664 children less than 10 years old, found that, with confounding variables controlled, the risk of autism increased with increasing paternal age. (wikipedia.org)
  • higher
  • Upon closer examination of diseases of the circulatory system, men with hypertensive disease, peripheral vascular and cerebrovascular disease, and nonischemic heart disease all displayed higher rates of semen abnormalities. (fertstertforum.com)