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Generation of Two-color Antigen Microarrays for the Simultaneous Detection of IgG and IgM Autoantibodies
Published on: September 15, 2016
Protein macroarray profiling of serum autoantibodies in pseudoexfoliation glaucoma
Edward W Dervan1, Hong Chen, Su Ling Ho
1Institute of Ophthalmology, Mater Misericordiae University Hospital, Dublin, Ireland. edervan@mac.com
Investigative Ophthalmology & Visual Science
|January 29, 2010
Summary
Researchers identified specific IgG autoantibodies in patients with pseudoexfoliation glaucoma (PXFG). These autoantibody profiles may help distinguish PXFG patients and offer insights into the disease
Area of Science:
- Ophthalmology
- Immunology
- Glaucoma Research
Background:
- Glaucoma is often associated with complex IgG autoantibodies targeting ocular antigens.
- Pseudoexfoliation glaucoma (PXFG) is a specific subtype requiring better diagnostic markers.
- Autoantibody repertoires may play a role in the pathophysiology of ocular diseases.
Purpose of the Study:
- To identify and characterize IgG autoantibody repertoires in patients with PXFG.
- To investigate potential autoantibody biomarkers for distinguishing PXFG from controls.
- To explore the role of autoantibodies in the underlying mechanisms of PXFG.
Main Methods:
- Serum samples from 21 PXFG patients and 19 controls were analyzed using high-density protein macroarrays.
- Prevalent antibody targets in PXFG patients were identified, sequenced, and their mRNA expression examined.
- Specific IgG immunoreactivity to C6orf129 was further validated using reverse ELISA.
Main Results:
- PXFG patients showed increased antibodies against seven specific proteins, including C6orf129.
- Antigens were expressed in neural tissues, suggesting potential ocular or neural involvement.
- Elevated anti-C6orf129 IgG levels were significantly higher in PXFG patients compared to controls (P < 0.05).
Conclusions:
- High-density protein array screening can reveal distinct autoantibody profiles in PXFG.
- These identified antibody profiles may serve as potential biomarkers for PXFG diagnosis.
- Further characterization of the autoantibody repertoire could elucidate PXFG's complex pathophysiology.
