The debate concerning a possible decline in sperm values over time has clearly demonstrated our lack of proper instruments and data to be used in this research While some authors have found little or no effect with the use of electronic devices on reproductive function, recent research by our group has shown damaging effects of these devices on semen variables in a study involving men. The diagnosis of infertility begins with a medical history and physical exam by a physician, physician assistant, or nurse practitioner. DEPs were used for functional enrichment analysis and key proteins involved in altered functions and testis-specific proteins were validated by western blot analysis. Similarly we examined the effect of exogenous induction of oxidative stress by cumene hydroperoxide on ORP in fresh and frozen semen samples.
Varicocele, is a condition of swollen testicle veins. Descritores: Infertilidade. A general physical examination is an integral part of the evaluation of male infertility. A total of infertile men with oligozoospermia; oligoasthenozoospermia OA ; oligoteratozoospermia OT and oligoasthenoteratozoospermia OAT and 56 donors were included in the study. In addition, there is an inverse relationship between the lengths of an adjacent thymidine-guanine TG repeat sequence and expression of the CFTR protein when the 5T variant is present. In the next study, we examined the protein alterations in infertile men with unilateral varicocele and compared these with those in the fertile men. See subsection in sperm donation Reproduction and pregnancy in speculative fiction.
Male infertility refers to a male’s inability to cause pregnancy in a fertile female. Factors relating to male infertility include: . One of the most commonly known causes of infertility is Klinefelter Syndrome, affecting 1 out of — newborn males  Klinefelter Syndrome is a chromosomal defect that occurs during gamete formation due to a non-disjunction error during cell division. Resulting in males having smaller testes, reducing the amount of testosterone and sperm production. This extra chromosome directly affects sexual development before birth and during puberty links to learning disabilities and speech development have also been shown to be affected.