Sperm Nuclear Stability and Male Infertility

Imprisonment-associated sperm clumping and male infertility.

OBJECTIVE This observational, retrospective study investigated infertility among Iraqi men who had been long-term prisoners of war. METHODS Routine seminal fluid analyses were undertaken in former prisoners with suspected infertility attending the Ramadi Infertility Clinic, Ramadi, Iraq; semen samples were also microscopically evaluated in these patients. RESULTS In 16 out of 38 patients (...

Male infertility and intracytoplasmic sperm injection (ICSI).

Micro-assisted fertilization in the form of intracytoplasmic sperm injection (ICSI) has truly revolutionised the treatment options for couples with impaired semen quality, and those with both obstructive and non-obstructive azoospermia. In general, the major issues which relate to the success of ICSI are those related to the success of conventional IVF, and the high multiple pregnancy rate rema...

Sperm counts and sperm sex ratio in male infertility patients.

In recent years, investigators have noted a trend toward a declining proportion of male births in many industrialized nations. While men bear the sex-determining chromosome, the role of the female partner as it pertains to fertilization or miscarriage may also alter the gender ratio. We attempted to determine a man's secondary sex ratio (F1 generation) by directly examining the sex chromosomes ...

Surgical sperm retrieval for male infertility

Oxidative stress and sperm chromatin damage in male infertility.

Researchers studying the causes of male infertility have recently focused on the role played by reactive oxygen species (ROS)—a highly reactive oxidizing agent belonging to the class of free radicals. ROS are produced by a variety of semen components, and antioxidants in the seminal fluid keep their levels in check. Small amounts of ROS help spermatozoa acquire their necessary fertilizing capab...