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The practical detection of mmp-9 diagnoses ocular surface disease and may help prevent its complications
1Louisiana State University Medical School, Department of Ophthalmology, Louisiana State University Eye Center, New Orleans, LA, USA. hkaufm@gmail.com
Purpose:
To evaluate the importance and practicality of testing for matrix metalloproteinase 9 (MMP-9) in dry eye and ocular surface disease. This enzyme, which can cause tissue damage, seems also to be the most reliable diagnostic indicator of ocular surface disease.
Methods:
Enzyme-linked immunosorbent assay, polymerase chain reaction, diffusion, and InflammaDry, a new rapid immunoassay by RPS (Rapid Pathogen Screening Inc).
Results:
MMP-9 measurement is sensitive and accurate for diagnosing dry eye and ocular surface disease and compares favorably in both sensitivity and specificity against the existing methods of dry eye diagnosis. Abnormal elevations of MMP-9 may predict post-laser in situ keratomileusis complications and refractive complications such as epithelial ingrowth and corneal ulceration. The presence of elevated MMP-9 on the ocular surface will identify those patients who should receive antiinflammatory therapy, such as cyclosporine, and may predict those patients who will respond to this therapy.
Conclusions:
A rapid in-office test that is sensitive for identifying inflammatory dry eye and ocular surface disease may facilitate better preoperative management of the ocular surface. Optimization of the ocular surface perioperatively would be expected to reduce complications from laser in situ keratomileusis and other surgeries that often make the underlying disease worse. This test may also indicate the need for antiinflammatory therapies, such as cyclosporine or steroids, and also may predict those patients who are more likely to respond.
Insights
Testing for matrix metalloproteinase 9 (MMP-9) is a practical and sensitive diagnostic tool for dry eye disease. Elevated MMP-9 levels can predict complications and guide anti-inflammatory treatment for ocular surface conditions.
Area of Science:
- Ophthalmology
- Biochemistry
Background:
- Matrix metalloproteinase 9 (MMP-9) is an enzyme implicated in tissue damage.
- MMP-9 is a potential diagnostic indicator for ocular surface disease.
Purpose of the Study:
- To evaluate the importance and practicality of testing for MMP-9 in dry eye and ocular surface disease.
- To assess MMP-9 as a diagnostic indicator for ocular surface disease.
Main Methods:
- Enzyme-linked immunosorbent assay (ELISA)
- Polymerase chain reaction (PCR)
- Diffusion assays
- InflammaDry rapid immunoassay
Main Results:
- MMP-9 measurement is sensitive and accurate for diagnosing dry eye and ocular surface disease.
- Elevated MMP-9 can predict post-LASIK complications and refractive issues.
- MMP-9 levels can identify patients who will benefit from anti-inflammatory therapy.
Conclusions:
- A rapid in-office MMP-9 test can improve preoperative ocular surface management.
- Optimizing the ocular surface perioperatively may reduce surgical complications.
- MMP-9 testing can guide anti-inflammatory treatment and predict patient response.
