PURPOSE Aquaporin-1 (AQP1) is involved in cell migration and proliferation; therefore, the purpose of the study was to investigate its expression in proliferative vitreoretinopathy (PVR) and epiretinal membranes (ERM). METHODS 19 membranes from PVR and ERM were collected following eye surgery. AQP1 mRNA and protein expressions were determined by RT-qPCR and immunofluorescence in the membranes...

AIM To report outcomes of pars plana vitrectomy (PPV) in pediatric retinal detachment (RD) with proliferative vitreoretinopathy (PVR), complications, factors influencing the final anatomical and functional results. METHODS Retrospective consecutive case series of 14 eyes. Average postoperative follow-up period was 34 months. RESULTS Mean age of patients was 10 years; eleven patients (79%) w...

Macrophages have long been known to play a major role in the pathogenesis of proliferative vitreoretinal disorders. Using the monoclonal antibodies EBM11 (pan macrophage), 27E10 (early inflammatory stage marker), and RM3/1 (healing phase marker), different subpopulations of macrophages were differentiated in surgically removed membranes from patients with macular pucker (n = 6), proliferative v...

over 75% of cases.5-7 This process is characterised by cellular proliferation on both surfaces of the detached neuroretina, on the posterior vitreous face, and within the vitreous base resulting in the formation of contractile periretinal membranes. It is estimated to occur in 5-10% of all rhegmatogenous retinal detachments.7 Initial clinical observations emphasised cellular activity in, and re...

PURPOSE Adjuvant intravitreal daunomycin is frequently used for the management of proliferative vitreoretinopathy (PVR). In this study the authors examined whether daunomycin could induce multidrug resistance (MDR), mediated by the mdr-1 gene product P-glycoprotein, in the cells responsible for reproliferation in vivo and in human retinal pigment epithelial (RPE) cells in vitro. METHODS Expre...

Proliferative vitreoretinopathy (PVR) is a frequent condition following complex retinal detachments or trauma, and subretinal PVR is a common cause of retinal redetachment. Subretinal PVR removal is challenging and may require creating multiple or large retinotomies, making manipulation of the retina difficult and sometimes hazardous. We propose a novel surgical technique that may facilitate su...

Proliferative vitreoretinopathy (PVR) develops as a complication of retinal detachment surgery and represents a devastating condition leading to serious vision loss. A good animal model that permits extensive functional studies and drug testing is crucial in finding better therapeutic modalities for PVR. A previously established mouse model, using dispase injection, was analyzed from the proteo...

BACKGROUND Sarcoidosis is a granulomatous disease causing uveitis. Although steroid therapy is usually effective for many patients, some are resistant to this therapy. In such cases, vitrectomy may be chosen as the therapeutic method to treat intraocular inflammation. CASE A 26-year-old Japanese man was diagnosed as having sarcoidosis by clinical findings and histological examination of bronc...