Expression of matrix metalloproteinases in the subretinal fluid correlates with the extent of rhegmatogenous retinal detachment.
BACKGROUND
We investigated the activity of matrix metalloproteinase (MMP)-2 and -9 and the protein levels of MMP-1, -3, -8 and the tissue inhibitor of MMPs (TIMP)-1 in the subretinal fluid (SRF) of patients with rhegmatogenous retinal detachment (RRD) and establishment of potential correlations with clinical parameters.


METHODS
Thirty-seven SRF from RRD patients and nine vitreous samples from the human eye of organ donors (controls) were collected and assayed for MMP-1,-3,-8 and TIMP-1 levels using ELISA and for MMP-2 and -9 activity employing gelatin zymography.


RESULTS
MMP-1, MMP-3, MMP-8, proMMP-2, proMMP-9, MMP-9 and TIMP-1 levels were higher in SRF compared with vitreous fluid. Overall, MMPs and TIMPs were differentially expressed in SRF with respect to duration and extent of RRD, as well as to stage of proliferative vitreoretinopathy. Regression analysis for all data indicated that a model consisting of MMP-3, MMP-8 and proMMP-9 could estimate the extent of RRD.


CONCLUSIONS
MMPs and TIMP-1 levels are elevated in SRF during RRD. A regression model consisting of MMP-3, MMP-8 and proMMP-9 may be proved to be of potential use in providing information for evaluation of the extent of RRD.
Symeonidis
Chrysanthos
C
2nd Department of Ophthalmology, School of Medicine, Aristotle University of Thessaloniki, Papageorgiou General Hospital, Thessaloniki Ring Road, 564 03, Thessaloniki, Greece.
Diza
Eudoxia
E
Papakonstantinou
Eleni
E
Souliou
Efimia
E
Karakiulakis
George
G
Dimitrakos
Stavros A
SA
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001826:Body Fluids / Q000201:enzymology*; D004797:Enzyme-Linked Immunosorbent Assay; D005122:Exudates and Transudates / Q000201:enzymology; D005260:Female; D006801:Humans; D008297:Male; D020782:Matrix Metalloproteinases / Q000378:metabolism*; D008875:Middle Aged; D012163:Retinal Detachment / Q000201:enzymology*; D019715:Tissue Inhibitor of Metalloproteinase-1 / Q000378:metabolism; D018630:Vitreoretinopathy, Proliferative / Q000201:enzymology*; D014822:Vitreous Body / Q000201:enzymology
D019715:Tissue Inhibitor of Metalloproteinase-1; D020782:Matrix Metalloproteinases