Gamma interferon could aid fight against fungal infections

Oct 31, 2007

Interferon, the “superhero” cure for viral infections, may be a strong weapon in the battle against fungal infections in immunocompromised patients, according to an article in the November issue of Microbiology Today.

Fungal infections (mycoses) were once seen as exotic diseases, but this is changing rapidly. Although rarely life-threatening in healthy patients, fungal infections are a major problem for the immunocompromised, including HIV patients and people receiving chemotherapy for cancer.

Treatment is becoming difficult due to fungal resistance to the antifungal therapy, the variety of disease-causing fungi found and the toxic effects of conventional therapy.

Now, scientists believe gamma interferon, a protein molecule produced by human cells in response to infections, may help to fight fungal infections. “Immune cells called neutrophils are rapidly recruited to the site of infection and play an essential role in fungal killing,” say Drs. Javier Capilla, Karl Clemons and David Stevens, of Santa Clara Valley Medical Center, Stanford Medical School and the California Institute for Medical Research. “Gamma interferon enhances the mechanisms of these cells to make them more potent killers of fungi.”

Tests on many fungal infections, including blastomycosis, candidosis and aspergillosis have shown that gamma interferon has beneficial effects in terms of the reduction of the fungus in the organs and on animal survival. But according to Dr Stevens, interferon is not the only answer. “Therapy using gamma interferon alone has failed to clear the fungus completely from infected tissues but it has great potential to add to conventional therapy.”

“When gamma interferon was given to mice infected with Cryptococcus along with amphotericin B, a standard antifungal treatment, the rate of cure was significantly higher than using one therapy alone. We need to look at the route of administration, the frequency of dosing and the dosage given before we can determine fully the use of gamma interferon as an adjunctive therapy.”

There is still work to be done. “We explored the possibility of using gene therapy for delivering gamma interferon into the nervous system to combat fungal meningitis. Studies of this type suggest a potential clinical use for specific gamma interferon gene therapy in the future. Treatment with gamma-interferon offers a new additional approach to treatment and it provides a new approach to treating difficult diseases. However, clinical trials must document the benefit for patients” says Dr Stevens.

Source: Society for General Microbiology

Explore further: Fish found in suspected tsunami debris boat quarantined

Related Stories

China's struggle for water security

1 hour ago

Way back in 1999, before he became China's prime minister, Wen Jiabao warned that water scarcity posed one of the greatest threats to the "survival of the nation".

Canada revises upward CO2 emission data since 1990

1 hour ago

Canada revised its greenhouse gas emission data from 1990 to 2013 in a report Friday, showing it had higher carbon dioxide discharges each year, and a doubling of emissions from its oil sands.

United States, China team explore energy harvesting

11 minutes ago

Six authors have described their work in harvesting energy in a paper titled "Ultrathin, Rollable, Paper-Based Triboelectric Nanogenerator for Acoustic Energy Harvesting and Self-Powered Sound Recording." ...

Recommended for you

Telling the time of day by color

13 hours ago

Research by scientists at The University of Manchester has revealed that the colour of light has a major impact on how the brain clock measures time of day and on how the animals' physiology and behavior adjust accordingly. ...

Roadkill hot spots identified in California

18 hours ago

An interactive map shows how California's state highway system is strewn with roadkill "hot spots," which are identified in a newly released report by the Road Ecology Center at the University of California, Da ...

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.