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Anti-gliadin antibodies were one of the first serological markers for coeliac disease. Problematic with AGA is the typical sensitivity and specificity was about 85%. Gliadin peptides which are synthesized as the deamidated form have much higher sensitivity and specificity, creating 2 serological tests for CD that approach biopsy diagnostic in ...
Anti-transglutaminase antibodies (ATA) are autoantibodies against the transglutaminase protein. Detection is considered abnormal, and may indicate one of several conditions . Antibodies serve an important role in the immune system by detecting cells and substances that the rest of the immune system then eliminates.
Anti-gliadin antibodies, like those detected in coeliac disease bind to the α-2 gliadin (57–73). [36] This site is within the T-cell reactive "33mer" presented by DQ2.5. There has been some suggestion wheat plays a role in juvenile diabetes as antibodies to the non-glutinous seed storage glb-1 (a globulin) are implicated in crossreactive ...
Antibodies to ganglioside are found to be elevated in coeliac disease. [16] Recent studies show that gliadin can cross-link to gangliosides in a transglutaminase independent manner, indicating that gliadin specific T-cell could present these antigens to the immune system. [17]
Anti-α-gliadin antibodies are frequently found in celiac disease (CD), to a lesser degree subclinical CD, but are also found in a subset who do not have the disease. Of people with pseudo-exfoliation syndrome , 25% showed increased levels of anti-gliadin IgA. [ 49 ]
In addition, cross-reactive anti-beef-collagen antibodies (IgG) may explain some rheumatoid arthritis (RA) incidences. [96] Although the presence of anti-beef collagen antibodies does not necessarily lead to RA, the RA association with Triticeae consumption is secondary to GSE and involves DRB1*0401/4 linkages to DQ8 [97] and is debatable. In ...
Serology for anti-tTG antibodies has superseded older serological tests (anti-endomysium, anti-gliadin, and anti-reticulin) and has a strong sensitivity (99%) and specificity (>90%) for identifying celiac disease. Modern anti-tTG assays rely on a human recombinant protein as an antigen. [43]
The presence of antibodies against GAD is the best indication of the condition that can be detected by blood and cerebrospinal fluid (CSF) testing. Anti-GAD65 is found in about 80% of SPS patients. Antithyroid, antiintrinsic factor, antinuclear, anti-RNP, and antigliadin antibodies are also often found in blood tests.