Navigation Links
Common contraception

A unique protein that only occurs in sperm could be the key to a new contraceptive for both men and women.The protein, named CatSper, is an ion channel protein that controls the flow of calcium into sperm tails. Calcium is crucial in enabling sperm to swim, so a drug designed to block the channel would immobilise sperm and prevent fertilisation.

The discovery is reported in this week's Nature by Dr Arnold Clapham, from the Howard Hughes Medical Institute, and colleagues from Harvard Medical School. It is also specific to mature sperm and does not appear to be expressed in sperm precursor cells, or in immature sperm.The very specific role of the protein means that a contraceptive designed to disrupt it would have far fewer side effects than a hormone-based contraceptive. Hormones are found in many different tissues.//

Working with mice, the researchers discovered that the sperm of mice without the CatSper gene were unable to penetrate the outer covering of the egg, called the zona pellucida. But when the researchers mixed the sperm with eggs that had the covering removed, they fertilised normally.

"It might be that this channel is involved in giving the sperm's tail a kind of turbocharge at the last instant, when it needs more power to penetrate the zona pellucida," Dr Chapman speculated.A contraceptive designed to prevent fertilisation would not interfere with the gene but simply inhibit the ion channel protein, so that calcium could not pass through. "If a drug could be designed to block this ion channel specifically, it could be taken by men or women," said Dr Chapman.


'"/>




Page: 1

Related medicine news :

1. Common Cold Remedy May Treat SARS
2. Common Plant Triggers Asthma
3. Pain Common in People with MS
4. Common Cold Found to Fight Cancer
5. Bullying – a Common Problem Among Childre
6. Common Medication Errors in Children
7. A Common Cause Of Allergy That Goes Unnoticed
8. Genetic Breakthrough in Common Eye Problem
9. Common Cold Found to Fight Cancer Cells
10. Side Effects Of Some Common Drugs
11. Analyzing The Side Effects Of Some Common Medications
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/26/2016)... (PRWEB) , ... June 26, 2016 , ... PawPaws ... a new product that was developed to enhance the health of felines. The formula ... , The two main herbs in the PawPaws Cat Kidney Support Supplement ...
(Date:6/25/2016)... ... ... of Bruton Memorial Library on June 21 due to a possible lice infestation, as reported ... head lice: the parasite’s ability to live away from a human host, and to infest ... in the event that lice have simply gotten out of control. , As lice are ...
(Date:6/25/2016)... ... ... On Friday, June 10, Van Mitchell, Secretary of the Maryland Department of Health ... of their exemplary accomplishments in worksite health promotion. , The Wellness at Work Awards ... at the BWI Marriott in Linthicum Heights. iHire was one of 42 businesses to ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... Marcy was in a crisis. Her son ... lash out at his family verbally and physically. , “When something upset him, he couldn’t ... would use it. He would throw rocks at my other children and say he was ...
(Date:6/24/2016)... ... ... makers of Topricin and MyPainAway Pain Relief Products, join The ‘Business for a Fair Minimum ... by 2020 and then adjusting it yearly to increase at the same rate as the ... wage floor does not erode again, and make future increases more predictable. , The company ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 ... "Pharmaceutical Excipients Market by Type (Organic Chemical (Sugar, ... Formulation (Oral, Topical, Coating, Parenteral) - Global Forecast to ... The global pharmaceutical excipients market ... at a CAGR of 6.1% in the forecast period ...
(Date:6/23/2016)... , June 23, 2016 Research ... Pharma News Issue 52" report to their offering. ... in influenza treatment creates a favourable commercial environment for MedImmune ... growing patient base that will serve to drive considerable growth ... vaccine would serve to cap sales considerably, but development is ...
(Date:6/23/2016)... Revolutionary technology includes multi-speaker listening ... industry leaders in advanced audiology and hearing aid technology, ... ™, the world,s first internet connected hearing aid that ...      (Photo: http://photos.prnewswire.com/prnh/20160622/382240 ) , ... ,world firsts,: , TwinLink™ - the first ...
Breaking Medicine Technology: