Journal Article
Research Support, Non-U.S. Gov't
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Factors Influencing Aqueous Proinflammatory Cytokines and Growth Factors in Uveitic Glaucoma.

PURPOSE: To analyze the effects of factors on aqueous humor proinflammatory cytokine and growth factor levels in patients with uveitic glaucoma (UG).

METHODS: In this cross-sectional study, we enrolled 143 participants: 1) UG patients (n = 39); 2) primary open-angle glaucoma (POAG) patients (n = 36); and 3) cataract surgery patients, as a comparative group (n = 68). Aqueous humor samples were obtained at the start of surgery. Aqueous cytokine levels were determined using a multiplex immunoassay (xMAP and the Human Cytokine/Chemokine Panel I).

RESULTS: In UG cases, mean interleukin (IL)-6, IL-8, monocyte chemotactic protein (MCP)-1, tumor necrosis factor (TNF)-α, platelet-derived growth factor (PDGF)-AA, PDGF-AB/BB, and VEGF levels were 171.1, 214.5, 2791.7, 3.5, 23.9, 5.4, and 168.9 pg/mL, respectively, and were higher than those in cataract (non-glaucomatous) cases except PDGF. Levels of IL-6, MCP-1, and VEGF were higher in UG cases than in POAG cases. UG cases with a history of phacoemulsification displayed significantly higher levels of IL-6 (P = 0.0164), IL-8 (P = 0.0003), MCP-1 (P = 0.0465), and PDGF-AB/BB (P = 0.0062) compared to the phakic cases. The presence of cells in the anterior chamber was related to higher levels of IL-8 (P = 0.0002), TNF-α (P = 0.0037), and PDGF-AB/BB (P = 0.0009). The level of PDGF-AB/BB was higher in infectious uveitis than in non-infectious uveitis (P = 0.0211). The level of transforming growth factor (TGF)-β2 was negatively correlated with the levels of MCP-1 (adjusted R2 = 0.28, t = -2.45, P = 0.031) and TNF-α (adjusted R2 = 0.27, t = -2.43, P = 0.032).

CONCLUSION: A history of phacoemulsification, the presence of cells in the anterior chamber, and infectious uveitis were related to aqueous proinflammatory cytokine levels in patients with UG. TGF-β2 might be an anti-inflammatory factor in aqueous humor of UG patients.

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