Navigation Links
Blood from Bird Flu Survivors Provides Breakthrough in Treatment of H5N1

US researchers report that antibodies extracted from the blood of bird flu survivors have helped cure mice infected with the dreaded H5N1 bird flu virus.

Scientists have long suspected that culling immune-system molecules from survivors could provide a new therapy for the hard-to-treat H5N1 flu strain.

If the research pans out, it could be possible to stockpile these antibodies, the immune system's search-and-destroy force, as an additional way to treat or even prevent H5N1 in case the worrisome flu strain ever mutates to spark a worldwide epidemic.

The research started when four Vietnamese adults who survived bouts of H5N1 in 2004 agreed to donate blood to the Hospital for Tropical Diseases in Ho Chi Minh City.

At Switzerland's Institute for Research in Biomedicine, Dr. Antonio Lanzavecchia created a way to cull antibody-producing cells from the blood and keep them churning out the molecules in laboratory dishes.

In the U.S., the National Institute of Health's Dr. Kanta Subbarao tested thousands of those antibodies to tease out the handful able to kill H5N1. They were purified to better target the virus.

Then came the real tests: Subbarao's lab infected mice with H5N1. Some were given the antibodies before they were exposed, others after they already were infected; still others were given antibodies that target different diseases, not influenza.

Mice given the non-H5N1 antibodies died. The H5N1-targeting antibodies protected mice, both when they were administered as a vaccine-like preventive or after infection. Importantly, they worked against both the same 2004 strain that the people had survived and against a different H5N1 strain that circulated in 2005.

The work is reported Monday in the online journal PLoS-Medicine.

"Obviously we're interested and excited about this potential," said Dr. Anthony Fauci, infectious disease chief at the National Institutes of Health .

This approach is called "passive immunotherapy," and more crude forms of the approach have long been used to protect against certain viruses. Before hepatitis A vaccines, for example, antibody-containing shots were common for tourists heading to developing countries.

And during the 1918 flu pandemic, the worst in history, doctors sometimes transfused blood directly from survivors to the newly sick, sometimes with good results.

The mouse study is "a very lovely, elegant proof of principle," said Dr. William Schaffner, a flu expert at Vanderbilt University.

More work is needed before trying these purified antibodies in people. It's standard to test flu vaccines and treatments in ferrets, who respond to influenza more like people do. Then the antibodies would need testing in healthy people, to see if they're safe.

If so, they might be tried as a treatment for people still falling ill with H5N1 in parts of Asia. The only treatment now is the drug Tamiflu, which doesn't always save them.


'"/>




Related medicine news :

1. Recommendations for Treatment of Blood Pressue
2. Blood Cells Capable of Regenerating Liver
3. Blood clots likely in long travel
4. Hemochromatosis Patients Blood is Safe
5. Blood transfusions beneficial after heart attacks
6. Blood Pressure Drug may slow wasting in burn victims
7. Levels Of Blood Proteins May Help Heart Disease Care
8. Blood test may identify ovarian cancer
9. A Blood test for suicide risk?
10. Blood Pressure Drugs maintain muscle strength
11. Blood test diagnoses heart failure in short time
Post Your Comments:
*Name:
*Comment:
*Email:


(Date:2/5/2016)... New York (PRWEB) , ... February 05, 2016 , ... ... The answer may be at the tips of your toes. Foot massage, whether administered ... well as pure comfort and relaxation. The American Board of Multiple Specialties in ...
(Date:2/5/2016)... Illinois (PRWEB) , ... February 05, 2016 , ... ... and independent PROSHRED franchises from across the country gathered at the La Valencia ... recognize top performers. PROSHRED Chicago was named the year’s most outstanding franchise, ...
(Date:2/5/2016)... ... February 05, 2016 , ... Pivot Point Consulting, ... in KLAS: Software & Services for HIT Implementation Support & Staffing report with ... ranks vendor performance by healthcare executives, managers and clinicians representing over 4,500 hospitals ...
(Date:2/5/2016)... CA (PRWEB) , ... February 05, 2016 , ... ... Move from on one drop zone to the next using Colorize's dynamic moving camera. ... any project. This package includes a 3D slideshow environment with 1 to 5 focus ...
(Date:2/5/2016)... ... February 05, 2016 , ... Calls Blacklist has just been updated by mobile ... and the developer has fixed known bugs within the app. Calls Blacklist allows its ... while not consuming any of their device’s battery power or memory. It provides a ...
Breaking Medicine News(10 mins):
(Date:2/5/2016)... DUBLIN , Feb. 5, 2016 /PRNewswire/ ... the addition of the "Global Obstetrics ... company profile to their offering. ... addition of the "Global Obstetrics Partnering ... company profile to their offering. --> ...
(Date:2/4/2016)... 2016  The Senior Care Pharmacy Coalition (SCPC) ... Chairman Jason Chaffetz (R-UT) and Ranking ... hearing , "Developments in the Prescription Drug Market," ... questions about abusive pharmacy benefit manager (PBM) pricing ... Ranking Member Elijah Cummings (D-MD) are diligent, serious ...
(Date:2/4/2016)... Feb. 4, 2016  SciClone Pharmaceuticals, Inc. (NASDAQ: ... has entered into a settlement agreement with the ... resolving the SEC,s investigation into possible violations of ... terms of the settlement agreement, SciClone has agreed ... disgorgement, pre-judgment interest and a penalty.  This payment ...
Breaking Medicine Technology: