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Lock & Key Antibody Test Could Boost Celiac Disease Diagnosis
Celiac.com 01/01/2014 - By enabling researchers to link antibodies with certain diseases, a new method could help uncover and confirm environmental triggers for diseases such as celiac and autism.
The researchers have two goals, according to professor Patrick Daugherty, a researcher with the department of chemical engineering and the Center for BioEngineering at University of California, Santa Barbara.
First, they want to create diagnostic tests for diseases for which there are currently no blood tests. Next, they want to figure out what causes the diseases.
Every time we encounter a pathogen, our bodies mounts an immune response in the form of antibodies that are specific for given antigens; molecular, microbial, chemical, etc. Each time our bodies mount this response, they form “memory cells” that are activated by subsequent encounters with that specific antigen. Responses can vary, from minor reactions to serious autoimmune diseases in which the body turns against its own tissues and its immune system responds by destroying them, such as in the case of Type 1 diabetes and celiac disease.
People with celiac disease, for example, will have certain antibodies in their blood that bind to specific peptides—short chains of amino acids—present in wheat, barley, and rye. These peptides are the gluten that trigger adverse reactions in certain people. In the same way that a lock is meant to take only one key, these antibodies will only attach to specific sequences of amino acids that make up the peptides.
The researchers want to figure out which antibodies are linked to specific diseases. “People with celiac disease have two particular antibody types in their blood, which have proved to be enormously useful for diagnosis,” says Daugherty.
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New Test Could Simplify Diagnosis of Celiac Disease
A new blood test under development by researchers at Walter and Eliza Hall Institute can rapidly and accurately diagnose celiac disease without the prolonged gluten exposure needed for current tests.... [READ MORE]
Jefferson Adams is a freelance writer living in San Francisco. His poems, essays and photographs have appeared in Antioch Review, Blue Mesa Review, CALIBAN, Hayden's Ferry Review, Huffington Post, the Mississippi Review, and Slate among others.
He is a member of both the National Writers Union, the International Federation of Journalists, and covers San Francisco Health News for Examiner.com.View all articles by Jefferson Adams
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