Navigation Links
Exposure to Peanuts May Build Tolerance to Allergy
Date:3/15/2009

The therapy is still experimental, and more research is needed, study says

SUNDAY, March 15 (HealthDay News) -- Exposing children with peanut allergies to a carefully administered daily oral dose of peanuts helped them build tolerance to the point where some of them appear to have lost their allergies, a new study found.

However, the researchers, from Duke University Medical Center and Arkansas Children's Hospital, cautioned that the approach is still experimental and should not be tried by parents on their own.

"This is not something to be done at home," said Dr. Wesley Burks, chief of the division of pediatric allergy and immunology at Duke and a co-author of the research. "It truly is an investigational study."

But the children in the study did build long-term tolerance, with the researchers documenting key immunologic changes reflecting a lack of allergic response.

Burks and his colleagues were expected to present their findings Sunday at the American Academy of Asthma, Allergy & Immunology meeting, in Washington, D.C.

About four million American have allergies to foods, and tree nut allergies, including peanut allergies, are the most common. For the highly allergic, exposure to even a trace amount of peanuts can provoke a life-threatening reaction. Nearly half of the 150 deaths attributed to food allergies each year are caused by peanut allergies, according to background information in the study.

For the study, which began five years ago, Burks and his colleagues gave children with a history of peanut allergy gradually larger daily doses of peanut protein, while other allergic children were given a placebo. The starting doses were very small, as little as 1/1000th of a peanut. The doses increased until the children ate the equivalent of up to 15 peanuts a day about 10 months later, and then they stayed on the daily therapy while they were monitored.

Nine of the 33 children participating in the study have been on maintenance therapy for more than 2.5 years, and four of them were able to discontinue the treatment and eat peanuts, the researchers said.

When the researchers tracked immunologic changes -- specifically levels of an antibody called immunoglobulin E, which the body makes in response to allergens -- they found the levels had declined to nearly nothing at the end of the trial.

"I think what has been shown in this [research] is that the threshold [at which allergic reactions begin] really can change with treatment," Burks said.

Changing the threshold is valuable, he said, because it could mean that if a child with a peanut allergy accidentally ate something with peanut in it, he may have no reaction. "If you do that alone, you give the family comfort," he said.

Still to be answered is whether doctors can "make the disease go away," Burks said, adding that his research will continue.

The concept of exposing an allergic person to small amounts of the allergen isn't new, of course, said Dr. Scott Sicherer, associate professor of pediatrics and chief of the division of pediatric allergy and immunology at Mount Sinai School of Medicine in New York City.

That's the idea behind allergy shots.

"I think this [Duke-Arkansas] is very promising, the results," added Sicherer, who's also chairman of the American Academy of Pediatrics' Section on Allergy and Immunology.

Funding for the study was provided by the U.S. National Institutes of Health, the Food Allergy & Anaphylaxis Network, the Food Allergy Project, the Gerber Foundation and the Robins Family Foundation.

More information

To learn more about food allergies, visit the American Academy of Allergy, Asthma & Immunology.



SOURCES: Scott Sicherer, M.D., chair, American Academy of Pediatrics' Section on Allergy and Immunology, associate professor of pediatrics and researcher at Jaffe Food Allergy Institute, Mount Sinai School of Medicine, New York City, and author of Understanding and Managing Your Child's Food Allergies; Wesley Burks, M.D., chief of the division of pediatric allergy and immunology, Duke University Medical Center, Durham, N.C.; March 15, 2009, presentation, American Academy of Asthma, Allergy & Immunology meeting, Washington, D.C.


'/>"/>
Copyright©2009 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Acting Surgeon General Announces National Initiatives to Protect Children by Reducing Exposure to Secondhand Smoke
2. Penn School of Medicine receives $2.3 million to study biomarkers of cigarette smoke exposure
3. Teamsters Applaud Passage of Legislation to Protect Workers From Diacetyl Exposure
4. R rating might be unlikely to affect teens exposure to smoking in movies
5. Occupational exposures may be linked to death from autoimmune disease
6. Low Lead Exposures Can Hurt Kidneys
7. Exposure to sunlight may decrease risk of advanced breast cancer by half
8. Firing clay in unvented kilns may be a source of exposure to dioxins
9. VIDEO from Medialink and EcoQuest: New Technology Reduces Exposure to MRSA Staph
10. Fetal Exposure to Arsenic Affects Genes
11. Westaim reduces ABCP exposure
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/26/2017)... ... April 26, 2017 , ... ... ATA 2017 President’s Awards recipients, comprised of organizations and individuals who have ... , The ATA 2017 President’s Awards recognize individuals and organizations on the ...
(Date:4/26/2017)... ... 26, 2017 , ... Elisabete Miranda, president and CEO of ... Women magazine as one of its 2017 Enterprising Women of the Year, a ... demonstrated that they have fast-growth businesses, mentor or actively support other women and ...
(Date:4/26/2017)... , ... April 26, 2017 , ... Miami native and ... a dentist. , “I could have never imagined back in 1991 that this journey ... Dr. Gallardo. , Over the last 25 years, Dr. Gallardo has pioneered implant dentistry ...
(Date:4/26/2017)... ... April 26, 2017 , ... ... improve the profitability of ready-to-drink, high-protein beverages by helping beverage manufacturers more effectively ... dairy proteins, providing direct cost savings as well as more stable pricing over ...
(Date:4/25/2017)... ... April 25, 2017 , ... Bellus ... that’s the first in a new class of photodynamic cosmetics (PDC). , Allumera® ... skin, visibly reduce outward signs of aging, and minimize the appearance of pores ...
Breaking Medicine News(10 mins):
(Date:4/20/2017)... BOSTON , April 20, 2017   ZappRx, Inc ... the specialty drug prescribing process, today announced it closed $25 ... Fund, a venture capital firm based in Seattle ... Qiming Venture Partners . The Series B round included ... A round in 2014, and GV (formerly Google ...
(Date:4/20/2017)... April 20, 2017 NeuroVive Pharmaceutical AB ... announced positive preclinical results demonstrating anti-fibrotic effects ... non-alcoholic steatohepatitis (NASH), in an additional well-validated ... NV556 has previously shown similar anti-fibrotic effects ... NeuroVive,s scientists present novel data demonstrating anti-fibrotic ...
(Date:4/19/2017)... The Mobile X-Ray product segment is the most ... the forecast period Mobile X-Ray segment is the ... X-Ray devices market, which is estimated to be valued at ... CAGR of 7% over the forecast period. Mobile X-Ray segment ... US$ 100 Mn in 2017 over 2016. The segment,s revenue ...
Breaking Medicine Technology: