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.

Increased demand, compensation for egg donors in U.S.

The AP/Boston Globe on Monday examined how increased demand for egg donations and compensation for donors in the U.S. has prompted more young women to donate their eggs. According CDC data, about 10,000 women donated eggs to federally monitored programs in 2004, compared with 3,800 women in 1996.

22 Feb 2007

Women in the UK to trade eggs for IVF treatment

According to the fertility regulator in the UK women there will soon be able to donate their eggs for medical research.

21 Feb 2007

Researchers replace organ in mice using 'single-parent' stem cells

Researchers at the University of Pennsylvania School of Veterinary Medicine have derived uniparental embryonic stem cells - created from a single donor's eggs or two sperm - and, for the first time, successfully used them to repopulate a damaged organ with healthy cells in adult mice.

18 Feb 2007

Vasectomy linked to dementia

Researchers in the United States have linked male sterilization surgery to a certain form of dementia.

14 Feb 2007

Vasectomy and trouble with words

Northwestern University researchers have discovered men with an unusual form of dementia have a higher rate of vasectomy than men the same age who are cognitively normal.

13 Feb 2007

Sperm competition phenomenon

In the context of sexual reproduction, natural selection is generally thought of as a pre-copulation mechanism. We are drawn to features of the human body that tell us our partner is healthy and will provide us a fighting opportunity to carry on our genetic lineage.

11 Feb 2007

Young single men are more likely to bank sperm before testicular cancer treatment

A quarter of men with testicular cancer banked their sperm before treatment, but only six per cent of those actually used the sperm to father a child, according to a study published in the January issue of the UK-based urology journal BJU International.

8 Jan 2007

A male contraceptive pill - but will they take it?

British scientists say a male contraceptive pill could be on the market within five years.

28 Nov 2006

Scientists discover function for antisense RNA

Researchers have found that a class of RNA molecules, previously thought to have no function, may in fact protect sex cells from self-destructing. These findings will be published in the November 17 issue of the journal Cell.

20 Nov 2006

Anabolic steroids and antisocial behaviour go together

Swedish researchers have found that there could well be a link between the use of anabolic steroids and antisocial behaviour.

7 Nov 2006

Sperm-busting male contraceptive pill in the pipeline

Scientists are in the process of developing a male contraceptive drug which stops the development process of sperm.

30 Oct 2006

Mobile phones increase mens' risk of infertility

More doubt has been cast on the safety of mobile phones by a new study which says men who use them could be risking their fertility.

24 Oct 2006

Blood clotting protein appears to also play a role in fertility

A protein known to play a role in blood clotting and other cell functions is also critical for proper sperm formation in mice, according to researchers from the University of North Carolina at Chapel Hill School of Medicine.

20 Oct 2006

Imperial receives $4 million for glycomics research

A team of researchers from Imperial College London's Division of Molecular Biosciences has received a grant of over US $4 million to support a research facility for understanding how sugars are involved in cell to cell communication.

28 Sep 2006

Older fathers almost six times more likely to have autistic children

Researchers in the U.S. have found that children fathered by older men have a higher risk of developing autism, possibly because of mutations or other genetic changes.

5 Sep 2006

Children of men age 40 and older have a significantly increased risk of having autism

Children of men age 40 and older have a significantly increased risk of having autism spectrum disorders compared with those whose fathers are younger than 30 years, according to an article in the September issue of Archives of General Psychiatry.

4 Sep 2006

Massachusetts Gov. Romney reiterates support for state's new embryonic stem cell research regulations

Massachusetts Gov. Mitt Romney (R) on Thursday said the state's newly adopted restrictions on human embryonic stem cell research are intended to prevent an "Orwellian" future, Reuters reports (Reuters, 8/31).

4 Sep 2006

U.S. research challenges Bush over embryonic stem-cell research

Researchers in the U.S. appear all set to challenge President Bush's stand over the issue of embryonic stem-cell research.

24 Aug 2006

Drug given to stop miscarriages doubles breast cancer risk for daughters

Scientists in the U.S. have found that the daughters of women who took a common anti-miscarriage drug during pregnancy may be facing twice the the normal risk of developing breast cancer.

8 Aug 2006