Sperm News and Research

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The term sperm refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The human sperm cell is haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell.

Latest research on obesity, diabetes, hormone replacement therapy to be presented

From reviewing the latest trends and clinical research in the field of endocrinology to debating the nation's obesity epidemic and the ethnic disparities in health care, the American Association of Clinical Endocrinologists' (AACE) Thirteenth Annual Meeting and Clinical Congress will highlight the current revolution in endocrinology.

29 Apr 2004

Studies show pregabalin does not affect male reproductivity or interfere with oral contraceptives

Two studies presented today at the American Academy of Neurology (AAN) 56th Annual Meeting show that pregabalin, when used as an add-on treatment for epilepsy, does not affect male reproductive function or interfere with the effectiveness of oral contraceptives.

29 Apr 2004

Chlamydia may cause infertility in men as well as long-term health problems for women

Swedish study suggests Chlamydia the most common sexually transmitted infection might cause infertility in men as well as long-term health problems for women.

29 Apr 2004

New information on genetic shuffling before egg or sperm formation rewrites genetic theory

Key decisions in the genetic shuffling that occurs before eggs or sperm are formed are made earlier than thought, rewriting textbook genetics, according to recent papers from researchers at UC Davis, Harvard University and UC San Diego.

16 Apr 2004

Genetic mutation raises interesting questions about the evolution of the Y chromosome

The names and dates comprising a family tree contain branches that can extend backward centuries in time. People use these diagrams to discover their ancestral origin. Scientists use them to study the genealogical origins of entire species, tracing evolutionary history down to changes in a single gene.

14 Apr 2004

Hormone associated with obesity also plays a key role in male fertility

Researchers in the University of Warwick’s Department of Biological Sciences have found that a hormone associated with obesity is actually also very active in the male genitals where it plays a key role in male fertility and may even influence the erection response in male sexual arousal.

6 Apr 2004

Plasticiser Phthalates connected with rising infertility rates

Phthalates, largely used as plasticisers, have long been suspected in connection with rising infertility rates, particularly among men. These substances are quite common and are considered highly hazardous to human health because they disrupt the hormonal balance and impair reproduction and development. What has not been clear up to now is the amount of phthalates that enter the human body.

22 Mar 2004