Tear cytokine profile in medicated glaucoma patients: effect of monocyte chemoattractant protein 1 on early posttrabeculectomy outcome

Ophthalmology
Rachel S ChongTina T Wong

Abstract

To determine the tear cytokine profile from medicated glaucoma patients scheduled for trabeculectomy and to establish whether a specifically elevated cytokine level is related to early postoperative scarring. Prospective case-control study. Sixty-one patients treated with topical antiglaucoma medications and 29 normal subjects with no prior topical treatment were recruited for the study. Schirmer strips were used to collect tear samples. A multiplex bead assay was used to quantify the presence of proinflammatory cytokines in the tears. The patients were followed up for 6 months after surgery to determine whether any postoperative intervention to maintain filtering bleb function was required. The level of cytokines in tear specimens from medicated glaucoma patients was the main outcome measure for the study. The need for postoperative bleb needling within 6 months was a secondary outcome measure. Of the 17 cytokines assayed, only monocyte chemoattractant protein 1 (MCP-1) was elevated significantly in the medicated eyes compared with the unmedicated eyes (P < 0.0004). At 6 months after surgery, 18 (30%) of the 61 eyes required postoperative intervention. A much higher MCP-1 level was detected in these eyes compared with the rema...Continue Reading

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