Health and Medical News and Resources

General interest items edited by Janice Flahiff

Flu Virus Wipes out Immune System’s First Responders to Establish Infection

From the 20 October 2013 article at Science Daily

Revealing influenza’s truly insidious nature, Whitehead Institute scientists have discovered that the virus is able to infect its host by first killing off the cells of the immune system that are actually best equipped to neutralize the virus.

Confronted with a harmful virus, the immune system works to generate cells capable of producing antibodies perfectly suited to bind and disarm the hostile invader. These virus-specific B cells proliferate, secreting the antibodies that slow and eventually eradicate the virus. A population of these cells retains the information needed to neutralize the virus and takes up residence in the lung to ward off secondary infection from re-exposure to the virus via inhalation.

Read the entire article here

 

October 21, 2013 Posted by | Consumer Health, Medical and Health Research News | , , , | Leave a comment

Flu Viruses Gaining Resistance, Study Confirms: MedlinePlus

HealthDay news image

 

 

From the December 7, 2010 news item by Robert Preidt

TUESDAY, Dec. 7 (HealthDay News) — Certain influenza virus strains are developing increasing drug resistance and greater ability to spread, a new study warns.

American and Canadian researchers confirmed that resistance to the two approved classes of antiviral drugs can occur in several ways and said this dual resistance has been on the rise over the past three years.

The team analyzed 28 seasonal H1N1 influenza viruses that were present in five countries from 2008 to 2010 and were resistant to both M2 blockers (adamantanes) and neuraminidase inhibitors (NAIs), including oseltamivir and zanamivir.

The researchers found that additional antiviral resistance can rapidly develop in a previously single-resistant influenza virus through mutation, drug response, or gene exchange with another virus…

The findings are published online Dec. 7 in advance of print publication Jan. 1 in the Journal of Infectious Diseases.

 

December 9, 2010 Posted by | Health News Items | , , , , , , | Leave a comment

   

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