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[Expression and significance of human leukocyte antigen DR and intercellular adhesion molecule-1 in normal and
Insights
Overexpression of human leukocyte antigen DR (HLA-DR) and intercellular adhesion molecule-1 (ICAM-1) in pathological corneas correlates with inflammation and increases the risk of keratoplasty rejection.
Area of Science:
- Immunology
- Ophthalmology
Context:
- Corneal inflammation and rejection are significant challenges in keratoplasty.
- Understanding the molecular markers involved is crucial for improving outcomes.
Purpose:
- To investigate the expression patterns of HLA-DR and ICAM-1 in normal and pathological corneas.
- To determine the association of these molecules with corneal inflammation and post-keratoplasty rejection.
Summary:
- Immunohistochemical analysis revealed minimal HLA-DR and ICAM-1 expression in normal corneas.
- Pathological corneas, particularly those with inflammation, showed marked overexpression of both markers.
- Higher expression rates of HLA-DR and ICAM-1 were observed in cases of keratoplasty rejection compared to non-rejection cases.
Impact:
- The findings suggest that elevated HLA-DR and ICAM-1 levels are linked to corneal inflammation.
- Overexpression of these molecules may promote the occurrence of keratoplasty rejection, highlighting their potential as biomarkers.
Objective:
To study the expression of human leukocyte antigen DR (HLA-DR) and intercellular adhesion molecule-1 (ICAM-1) in normal and pathological corneas and their significance in corneal inflammation and rejection after keratoplasty.
Methods:
The expression of HLA-DR and ICAM-1 were detected in 10 normal corneas and 48 pathological corneas by using immunohistochemical techniques.
Results:
HLA-DR and ICAM-1 were not expressed or only slightly expressed in normal corneas and markedly expressed in pathological corneas, especially in inflammatory corneas. In general, HLA-DR and ICAM-1 were co-expressed in similar regions. The expression rates of HLA-DR and ICAM-1 in the 7 cases of keratoplasty rejection were higher than that in the 21 cases of non-rejection.
Conclusion:
The overexpression of HLA-DR and ICAM-1 is related to corneal inflammation and can promote the occurrence of keratoplasty rejection.