Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Gene is first linked to herpes-related cold sores

30.11.2011
A team of researchers from the University of Utah and the University of Massachusetts has identified the first gene associated with frequent herpes-related cold sores.

The findings were published in the Dec. 1, 2011, issue of the Journal of Infectious Diseases.

Herpes simplex labialis (HSL) is an infection caused by herpes simplex virus type 1 (HSV-1) that affects more than 70 percent of the U.S. population. Once HSV-1 has infected the body, it is never removed by the immune system. Instead, it is transported to nerve cell bodies, where it lies dormant until it is reactivated. The most common visible symptom of HSV-1 reactivation is a cold sore on or around the mouth. Although a majority people are infected by HSV-1, the frequency of cold sore outbreaks is extremely variable and the causes of reactivation are uncertain.

"Researchers believe that three factors contribute to HSV-1 reactivation – the virus itself, exposure to environmental factors, and genetic susceptibility," says John D. Kriesel, M.D., research associate professor of infectious diseases at the University of Utah School of Medicine and first author on the study. "The goal of our investigation was to define genes linked to cold sore frequency."

Kriesel and his colleagues previously had identified a region of chromosome 21 containing six genes significantly linked to HSL disease using DNA collected from 43 large families to map the human genome. In the current study, Kriesel and his colleagues performed intensive analysis of this chromosome region using single nucleotide polymorphism (SNP) genotyping, a test which identifies differences in genetic make-up between individuals.

"Using SNP genotyping, we were able to identify 45 DNA sequence variations among 618 study participants, 355 of whom were known to be infected with HSV-1," says Kriesel. "We then used two methods called linkage analysis and transmission disequilibrium testing to determine if there was a genetic association between particular DNA sequence variations and the likelihood of having frequent cold sore outbreaks."

Kriesel and his colleagues discovered that an obscure gene called C21orf91 was associated with susceptibility to HSL. They identified five major variations of C21orf91, two of which seemed to protect against HSV-1 reactivation and two of which seemed to increase the likelihood of having frequent cold sore outbreaks.

"There is no cure for HSV-1 and, at this time, there is no way for us to predict or prevent cold sore outbreaks," says Kriesel. "The C21orf91 gene seems to play a role in cold sore susceptibility, and if this data is confirmed among a larger, unrelated population, this discovery could have important implications for the development of drugs that affect cold sore frequency."

Kriesel's University of Utah collaborators include Maurine R. Hobbs, Ph.D., research assistant professor of internal medicine and adjunct assistant professor of human genetics, and Mark F. Leppert, Ph.D., distinguished professor and former chair of human genetics.

Phil Sahm | EurekAlert!
Further information:
http://www.utah.edu

More articles from Life Sciences:

nachricht Scientists uncover the role of a protein in production & survival of myelin-forming cells
19.07.2018 | Advanced Science Research Center, GC/CUNY

nachricht NYSCF researchers develop novel bioengineering technique for personalized bone grafts
18.07.2018 | New York Stem Cell Foundation

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Future electronic components to be printed like newspapers

A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.

The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

A smart safe rechargeable zinc ion battery based on sol-gel transition electrolytes

20.07.2018 | Power and Electrical Engineering

Reversing cause and effect is no trouble for quantum computers

20.07.2018 | Information Technology

Princeton-UPenn research team finds physics treasure hidden in a wallpaper pattern

20.07.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>