Navigation Links
Avian flu becoming more resistant to antiviral drugs, says University of Colorado study
Date:1/7/2009

A new University of Colorado at Boulder study shows the resistance of the avian flu virus to a major class of antiviral drugs is increasing through positive evolutionary selection, with researchers documenting the trend in more than 30 percent of the samples tested.

The avian flu, an Influenza A subtype dubbed H5N1, is evolving a resistance to a group of antiviral drugs known as adamantanes, one of two classes of antiviral drugs used to prevent and treat flu symptoms, said CU-Boulder doctoral student Andrew Hill, lead study author. The rise of resistance to adamantanes -- which include the nonprescription drugs amantadine and rimantadane -- appears to be linked to Chinese farmers adding the drugs to chicken feed as a flu preventative, according to a 2008 paper by researchers from China Agricultural University, said Hill.

In contrast, resistance of the avian flu virus to the second, newer class of antiviral drugs that includes oseltamivir -- a prescription drug marketed under the brand name Tamiflu -- is present, but is not yet prevalent or under positive genetic selection, said Hill of CU-Boulder's ecology and evolutionary biology department. The CU findings should help health administrators around the world plan for the possibility of an avian flu pandemic.

The CU-Boulder study is the first to show H5N1 drug resistance to adamantanes arose through novel genetic mutations rather than an exchange of RNA segments within cells, a process known as re-assortment, said Hill. The research on the mutations, combined with molecular evolution tests and a geographic visualization technique using Google Earth, "provides a framework for analysis of globally distributed data to monitor the evolution of drug resistance," said Hill.

The CU-Boulder-led study appears online in the journal Infection, Genetics and Evolution. Co-authors included CU-Boulder Associate Professor Robert Guralnick, recent CU-Boulder graduate Meredith Wils
'/>"/>

Contact: Andrew Hill
andrew.hill@colorado.edu
303-735-0441
University of Colorado at Boulder
Source:Eurekalert  

Page: 1 2 3

Related biology news :

1. Protein tubules free avian flu virus from immune recognition
2. Genetic evidence for avian influenza movement from Asia to North America via wild birds
3. Avian flu threat: New approach needed
4. New research refutes myth of pure Scandinavian race
5. Solving an avian scourge could also provide benefits to human health
6. Avian origins: new analysis confirms ancient beginnings
7. MIT finds key to avian flu in humans
8. Smiths Detection to launch a portable diagnostic system for foot-and-mouth disease and avian flu
9. New field-deployable biosensor detects avian influenza virus in minutes instead of days
10. Scientists demonstrate feasibility of preventing malaria parasite from becoming sexually mature
11. Mountain summits in the Alps becoming increasingly similar
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Avian flu becoming more resistant to antiviral drugs, says University of Colorado study
(Date:4/23/2014)... data shows Africa,s Congo rainforest, the second-largest tropical rainforest ... greenness over the past decade. , The study, led ... of New York, shows between 2000 and 2012 the ... intensified. The research, published Wednesday in Nature , ... explore the effects of long-term drought on the Congo ...
(Date:4/23/2014)... of asthma, allergies and other chronic inflammatory disorders among ... part to their reduced exposure to the microbes that ... paper. , The article, published in the journal ... in urban centers who have less access to green ... a condition caused by immune system dysfunction. , When ...
(Date:4/23/2014)... German . Man ... difference between sexes depends on one single element of the genome: ... two sexual chromosomes are X and Y, whereas women have two ... morphological and physiological differences between males and females. , But this ... the X and Y were identical, until the Y started to ...
Breaking Biology News(10 mins):NASA satellites show drought may take toll on Congo rainforest 2NASA satellites show drought may take toll on Congo rainforest 3Rural microbes could boost city dwellers' health 2Rural microbes could boost city dwellers' health 3Male or female? 2Male or female? 3
... KNOXVILLE -- Research by a small group of microbiologists ... of the Earth: the realm just beneath the deep ocean ... on our planet. Beth Orcutt, a post-doctoral fellow at ... presented her new findings about this little researched realm today ...
... research studies should not be disclosed to participants without ... of the European Society of Human Genetics today (Monday). ... Policy, Management and Evaluation at the University of Toronto, ... held by many ethicists that individual genetic research findings ...
... Researchers at Rice University, Purdue University and the ... about why some fluids containing polymers -- including saliva ... do not. The findings are published online this ... Study co-author Matteo Pasquali, professor in chemical and biomolecular ...
Cached Biology News:New research into the deep ocean floor yields promising results for microbiologists 2Should the results of individual genetic studies be disclosed to participants? 2Should the results of individual genetic studies be disclosed to participants? 3Answer to saliva mystery has practical impact 2
(Date:1/14/2014)... Calif. , Jan. 14, 2014 As pet owners drew ... doubt many of them wrote: "Take better care of my furry ... even designer clothes and top-brand carrying cases to take the little ... parents might also feel compelled to buy some pricey toys at ...
(Date:1/14/2014)... Boston, MA (PRWEB) January 14, 2014 iLab ... Michelle Detwiler as the new Director of Product Strategy. In ... as well as iLab sub-teams to guide in the development ... that iLab provides the maximum possible benefit to the scientific ...
(Date:1/14/2014)... , Jan. 14, 2014   Kinaxis ®, provider of ... ) and sales and operations planning ( S&OP ) service, ... Biomanufacturing Summit , which will be held at the Hilton ... conference, join Kinaxis customer Elisabeth Kaszas , Director of ...
(Date:1/14/2014)... CA (PRWEB) January 14, 2014 Independent ... County), California, and Montreal, Canada, has big ideas for ... non-fiction. The press's goals are to produce high-quality, low-cost, ... to support local businesses. , The first major ...
Breaking Biology Technology:New Year's Resolution: Give Pets the Gift of Top-Notch Health Care 2iLab Solutions Announces Michelle Detwiler as the New Director of Product Strategy 2Event Alert: Kinaxis Customer to Present at the Biomanufacturing Summit "Supply Chain: Improving Network Effectiveness" 2Bitingduck Press Looks Forward to 2014 With Multimedia E-books 2
... , ... ... ... ...
... ... with the upside of not only producing a low sodium meat product but with ... ... manufacturer of value-added ingredients into the natural food, nutraceutical and medical food market, is ...
... ... ... ... ...
Cached Biology Technology:China Medical Technologies Reports Third Fiscal Quarter Financial Results 2China Medical Technologies Reports Third Fiscal Quarter Financial Results 3China Medical Technologies Reports Third Fiscal Quarter Financial Results 4China Medical Technologies Reports Third Fiscal Quarter Financial Results 5China Medical Technologies Reports Third Fiscal Quarter Financial Results 6China Medical Technologies Reports Third Fiscal Quarter Financial Results 7China Medical Technologies Reports Third Fiscal Quarter Financial Results 8China Medical Technologies Reports Third Fiscal Quarter Financial Results 9China Medical Technologies Reports Third Fiscal Quarter Financial Results 10China Medical Technologies Reports Third Fiscal Quarter Financial Results 11China Medical Technologies Reports Third Fiscal Quarter Financial Results 12China Medical Technologies Reports Third Fiscal Quarter Financial Results 13China Medical Technologies Reports Third Fiscal Quarter Financial Results 14China Medical Technologies Reports Third Fiscal Quarter Financial Results 15China Medical Technologies Reports Third Fiscal Quarter Financial Results 16China Medical Technologies Reports Third Fiscal Quarter Financial Results 17China Medical Technologies Reports Third Fiscal Quarter Financial Results 18China Medical Technologies Reports Third Fiscal Quarter Financial Results 19China Medical Technologies Reports Third Fiscal Quarter Financial Results 20China Medical Technologies Reports Third Fiscal Quarter Financial Results 21China Medical Technologies Reports Third Fiscal Quarter Financial Results 22New Study Shows Nu-Tek's Modified Potassium Chloride Improves Yields in Meat Processing 2New Study Shows Nu-Tek's Modified Potassium Chloride Improves Yields in Meat Processing 3Medivation to Host Conference Call at 8:30 a.m. Eastern Time Tomorrow to Discuss Phase 3 Trial Results for Dimebon in Alzheimer's Disease 2Medivation to Host Conference Call at 8:30 a.m. Eastern Time Tomorrow to Discuss Phase 3 Trial Results for Dimebon in Alzheimer's Disease 3
Porcine parvovirus and mycoplasma tested. Contains 0.5 g/L of trypsin (1:250) and 0.2 g/L of EDTA4Na in Hanks' Balanced Salt Solution without CaCl2 MgCl2 6H2O and MgSO4 7H2O. Contains phenol red....
Immunogen: Recombinant full length protein. Storage: -20 C, Avoid Freeze/Thaw Cycles...
Immunogen: Synthetic peptide: R(89) L A F T V D D N P T K P T T R Q R Y(107) Storage: -20 C, Avoid Freeze/Thaw Cycles...
...
Biology Products: