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Study Finds Allergy Remedy Using "Hair-of -the-Dog" Approach

by Madhumathi Palaniappan on September 27, 2016 at 11:01 AM
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Study Finds Allergy Remedy Using

A research team from Duke Health have studied cellular processes that has occurred during 'rush desensitization' using mice models. It was carried out by giving allergy triggers like peanut, chemotherapy or bee poison to the patients.

Allergy is usually a reaction caused by the immune system to the body due to the surrounding environment. Symptoms usually arise from mast cells which are white blood cells that are capable of releasing granule filled chemicals like histamines and heparins. When an allergy trigger like pollen is exposed for the first time, it may make Immunoglobulin E antibody which may bind to the allergen on frequent exposure leading to the release of inflammatory chemicals.

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Soman Abraham Ph.D, Professor at the Duke University School of Medicine and Duke-National University Singapore Medical School and senior author of the study said that "We have known for at least 100 years that the approach is effective"

"People who have terrible, even life-threatening reactions to certain antigens can then tolerate an exposure - if just for a short period of time." he added.
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Abraham's team along with A. Wesley Burks M.D , carried out different experiments to understand cellular processes that occur during allergy reactions and rush desensitization. Burks was known to be the first person to develop peanut allergy approach on children which was based on rush desensitization principle.

They were able to describe the disruption that occur inside the mast cells among actin filaments that form the inner coat of the cell. When an allergen approaches these tiny filaments, they move to the center of the cell and break down resulting in the eruption of granules.

Sometimes when the actin moves prematurely to the center of the cell due to tiny dose of allergens, they do not initiate eruption and release of granules. This thus avoids allergic reactions.

W.X. Gladys Ang, a graduate student in the Department of Molecular Genetics & Microbiology at Duke who is also a lead author of the study said that "Having figured out the mechanism, we should now be able to find new drugs that can target the actin and prolong the desensitization," "This will allow for recovery to be slower, enabling people to be tolerant of allergens for longer periods."

This study carried out along with Alison M. Church, Mike Kulis and Hae Woong Choi was published in the Journal of Clinical Investigation.



Source: Medindia
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