Your Autoantibody 'Profile' Might Someday Help Spot Illness
Differences showed up in study of people with conditions including Alzheimer's, breast cancer.
Human blood contains thousands of autoantibodies that could serve as signals for certain diseases, according to a new study.
Researchers found that every person has a unique autoantibody profile, which remains consistent over time.
People with Alzheimer's disease, Parkinson's disease, multiple sclerosis and breast cancer all had much lower numbers of autoantibodies than their peers, the study showed.
This research supports our proposal that autoantibody profiles will be useful as diagnostic biomarkers for a wide variety of diseases.
Autoantibodies are proteins released by the immune system that attack parts of the body rather than targeting foreign "invaders."
In conducting the new study, the researchers examined the immune-response profiling of 166 people. Among the participants were groups of patients with different medical conditions.
Participants' autoantibody profiles were affected by their age, gender and disease. Autoantibodies appeared to bind to antigens -- substances within organs and tissues throughout the body -- in response to injury and disease, and help rid the cells of waste.
As people age, the number of detectable autoantibodies increases, the investigators found. And women have significantly more autoantibodies than men. This could be associated with higher rates of autoimmune disease among women, the researchers suggested.
Given the evidence supporting an abundance of autoantibodies, it is probable that there are even more naturally occurring autoantibodies than we were able to detect here. The complex profile of autoantibodies suggests that they carry out an essential function, and the clearance of debris generated by the body on a day-to-day basis is a reasonable bet.
Source: U.S. Dept. of Health & Human Services
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