May 25, 2012

For Birth Control and Fertility

1 Gene that Controls Sperm Maturation Found

New research out of the University of Edinburgh's Centre for Reproductive Health has found that male birth control could be developed by designing a drug that impairs the function of the gene Katnal1 which is necessary for complete sperm maturation. Katnal1is involved in the later stages of the process, so it would not affect sperm production or the levels of testosterone which can lead to mood swing, irritability and acne. Studies in mice that had the Katnal1 gene knocked out found that it modulates proteins called microtubules that give structural and nutritional support and help them move in the testes during development. Understanding katnal1’s role in sperm development also has a flipside; it can help researchers better understand and treat infertility in men.

More at Science Daily | Posted 5 years ago by Kristie Hayes

Previously: Male Birth Control Successful in Mice

Tags: Male Birth Control, Male Infertility, Sperm, Katnal1, Non-Hormonal Contraception, Sperm Development, University of Edinburgh's Centre for Reproductive Health

Comment on This | Was this Interesting? Yes! (51%) / No! (49%)

What Protects Most Babies?

2 Women with HIV Have Antibodies in Breast Milk

Researchers from Duke University Medical Center have discovered that the breast milk of HIV-positive women in Malawi has B cells that produce antibodies that neutralize the virus. The fact that only 10 percent of infants who are breastfed for a year become infected made them want to understand how 90 percent of them were being protected. One major challenge was preserving and transporting the breast milk so viable B cells could be isolated and used for experiments, but two different HIV-neutralizing antibodies were isolated. Scientists were excited that these antibodies which are also found on mucosal surfaces such as the GI tract and vagina were present in breast milk and hope this information sheds light on adult-to-adult and mother-to- child transmission.

More at Science Daily | Posted 5 years ago by Kristie Hayes

Previously: Vitamin a Makes Breastfeeding with HIV More Risky

Tags: Antibodies, Breastfeeding, Breastmilk, Duke University Medical Center, HIV, Human Immunodeficiency Virus, B Cells

Comment on This | Was this Interesting? Yes! (53%) / No! (47%)

2015

October 28 21 14 8 2

September 26 18 12 6

August 30 24 17 11 5

July 29 23 16 9 3

June 28 23 16 10 5

May 31 25 20 13 8 3

April 28 21 16 8 1

March 27 21 13 6 3

February 27 20 13 6

January 31 27 25 17 12 8 7 5

2014

December 31 25 18 9 8 7 4 3 2

November 30 29 28 26 25 23 22 21 18 17 15 13 12 11 10 9 7 5 4 3 2

October 31 30 28 26 24 23 22 21 20 19 18 17 16 15 14 13 11 10 9 8 7 6 5 4 3 2 1

September 30 29 28 27 26 25 24 23 22 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

August 31 30 29 28 27 26 25 24 23 22 21 20 19 18 16 15 14 13 12 11 10 9 7 6 5 4 3 1

July 31 30 29 28 26 24 23 22 21 20 19 17 16 15 14 13 12 11 10 9 8 7 6 4 3 1

June 30 29 28 26 25 24 23 22 21 18 17 16 15 13 12 11 10 8 7 6 5 3 2 1

May 31 30 28 26 25 24 22 20 19 18 17 15 14 13 12 11 9 7 6 5 2

April 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 12 11 10 9 8 7 6 5 4 3 2 1

March 31 30 27 26 25 24 23 22 21 20 19 18 17 16 14 13 12 10 9 7 6 5 4 3 1

February 28 27 26 25 24 22 21 20 19 18 17 15 14 13 12 11 10 9 8 6 5 4 3 2 1

January 31 30 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 10 9 8 7 6 5 4 3 2 1

2013

December 30 29 28 25 23 22 21 20 18 17 16 14 13 12 11 10 9 8 7 6 5 4 3 2 1

November 30 29 27 26 25 24 23 22 21 20 19 18 17 14 13 12 11 10 9 7 6 5 4 3 2 1

October 31 30 29 28 27 26 24 23 22 21 19 18 17 16 15 14 12 10 9 8 7 6 4 3 2 1

September 30 29 28 27 26 25 24 23 22 21 20 19 18 17 15 14 13 12 11 10 9 8 7 5 4 3 2

August 31 30 29 27 26 25 24 23 22 21 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

July 31 30 29 28 27 26 25 24 23 22 21 20 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

June 30 29 27 26 25 24 23 22 20 19 18 17 16 15 14 13 12 11 10 9 8 6 5 4 3

May 31 30 29 28 27 26 24 23 22 21 20 17 16 15 14 13 11 10 9 8 7 6 4 3 2 1

April 30 29 27 26 25 23 22 20 18 16 15 13 12 11 10 9 8 6 5 4 3 2 1

March 31 30 29 28 27 26 25 22 21 20 19 18 16 15 14 13 12 11 10 9 8 7 6 5 4 2 1

February 28 27 26 25 23 22 21 20 19 18 17 16 15 13 12 11 10 9 8 7 6 5 4 3 2 1

January 31 29 28 26 25 24 23 22 21 20 19 18 17 16 13 12 11 10 9 8 7 6 4 3 2 1

2012

December 31 30 29 27 26 25 24 23 22 21 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 1

November 30 29 28 27 26 25 24 23 21 20 19 18 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

October 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 12 11 10 9 8 6 5 4 3 2 1

September 29 28 27 26 25 24 23 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

August 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

July 31 30 29 28 27 26 25 23 22 21 20 19 18 17 16 14 13 12 11 10 9 8 7 6 5 4 3 2

June 30 29 28 27 26 25 24 23 22 21 20 19 18 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

May 31 30 29 28 27 26 25 24 23 22 21 19 18 17 16 15 14 12 11 10 9 8 7 6 5 4 3 2 1

April 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

March 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 10 9 8 7 6 5 4 3 2 1

February 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

January 31 30 29 28 27 26 25 24 23 22 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

2011

December 30 29 28 27 26 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

November 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

October 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

September 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

August 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

July 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

June 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

May 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

April 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 12 11 10 9 8 7 6 5 4 3 2 1

March 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

February 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

January 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

2010

December 31 30 29 28 27 26 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

November 30 29 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

October 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

September 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

August 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 10 9 8 7 6 5 4 3 2 1

July 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

June 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

May 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

April 30 29 28 27 26 25 24 23 22 21 20 19 17 16 15 14 13 12 10 8 7 6 5 2 1

March 31 30 28 27 26 25 24 23 22 19 18 17 16 15 14 13 11 10 9 8 7 6 4 3 2 1

February 28 27 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

January 31 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 7 6

2009

December 27 26 24 22 21 19 16

Most Recent 100 Items