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Gene discovery could lead to male contraceptive
Date:4/2/2009

A newly discovered genetic abnormality that appears to prevent some men from conceiving children could be the key for developing a male contraceptive, according to University of Iowa researchers reporting their findings in the April 2 online edition of the American Journal of Human Genetics.

Although female oral contraceptives were developed over 40 years ago and have proven very effective for family planning, no similar pharmacological contraceptive has been developed for males. Surveys conducted by the Medical Research Council Reproductive Biology Unit in the United Kingdom, suggest that men would be willing to use a pharmacological contraceptive if one was available. Presently the only contraceptives available for men are condoms or a vasectomy.

"We have identified CATSPER1 as a gene that is involved in non-syndromic male infertility in humans, a finding which could lead to future infertility therapies that replace the gene or the protein. But, perhaps even more importantly, this finding could have implications for male contraception," said Michael Hildebrand, Ph.D., co-lead author of the study and a UI postdoctoral researcher in otolaryngology at the UI Roy J. and Lucille A. Carver College of Medicine.

The research team, which included scientists from the University of Social Welfare and Rehabilitation Sciences in Tehran, Iran, discovered the male infertility gene while studying the genetics of families from Iran -- a population that has relatively high rates of disease-causing gene mutations.

Although the team's research with these Iranian families focuses on identifying genetic causes of deafness, collecting genetic information from this population allowed the researchers to identify two families where male infertility that was not part of a syndrome appeared to be inherited. The affected men's infertility was diagnosed with a routine semen analysis.

Focusing on a group of genes that have been implicat
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Contact: Jennifer Brown
jennifer-l-brown@uiowa.edu
319-335-9917
University of Iowa
Source:Eurekalert  

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