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MicroRNA Expression in Subretinal Fluid in Eyes Affected by Rhegmatogenous Retinal Detachment.
Paolo Carpineto1,2, Ester Sara Di Filippo3, Agbeanda Aharrh Gnama2
1Department of Medical, Oral and Biotechnological Sciences, University "G. d'Annunzio" of Chieti-Pescara, 66100 Chieti, Italy.
International Journal of Molecular Sciences
|February 11, 2023
Summary
MicroRNAs (miRNAs) in subretinal fluid may indicate risk for proliferative vitreoretinopathy (PVR) after retinal detachment. Elevated miR-21 and miR-34 correlate with longer symptom duration, while miR-146a may decrease in PVR development.
Area of Science:
- Ophthalmology
- Molecular Biology
- Genetics
Background:
- Proliferative vitreoretinopathy (PVR) is a significant cause of vision loss following rhegmatogenous retinal detachment (RRD).
- MicroRNAs (miRNAs) play crucial roles in cellular processes, but their specific involvement in subretinal fluid during RRD and PVR development is underexplored.
- Subretinal fluid offers a unique biological matrix for studying intraocular disease mechanisms.
Purpose of the Study:
- To investigate the expression profiles of specific miRNAs within subretinal fluid from patients with RRD.
- To explore potential correlations between miRNA expression and clinical risk factors for PVR.
- To identify miRNAs that may serve as biomarkers for PVR development.
Main Methods:
- Prospective collection of 24 subretinal fluid samples from patients undergoing scleral buckling for RRD.
- RNA isolation and quantitative reverse transcription polymerase chain reaction (qRT-PCR) analysis of 12 selected miRNAs.
- Statistical analysis to correlate miRNA expression levels with clinical data, including symptom duration and PVR development.
Main Results:
- A positive association was observed between the expression of miR-21 and miR-34 and the duration of RRD symptoms (p=0.017, r=0.515 for miR-21; p=0.030, r=0.624 for miR-34).
- A trend towards decreased expression of miR-146a was noted in patients who subsequently developed PVR.
- These findings suggest distinct miRNA expression patterns related to RRD progression and PVR risk.
Conclusions:
- Subretinal fluid is a valuable source for analyzing miRNA expression in the context of RRD and PVR.
- Specific miRNAs, such as miR-21 and miR-34, may be linked to the chronicity of retinal detachment.
- Further research into miR-146a could elucidate its role as a potential protective factor or biomarker in PVR prevention.
