Cytokine Levels in the Aqueous Humor Are Associated With Corneal Thickness in Eyes With Bullous Keratopathy
2019
Purpose We sought to investigate the association between the severity of bullous keratopathy and proinflammatory cytokine levels in the aqueous humor (AqH). Design Cross-sectional study. Methods This study included a total of 95 eyes: 62 with bullous keratopathy and 33 that underwent cataract surgery. Central corneal thickness (CCT) and central corneal volume within 4 and 6 mm (CCV 4mm and CCV 6mm , respectively) were determined using anterior segment optical coherence tomography. A total of 95 AqH samples were collected at the beginning of surgery. The levels of cytokines (interleukins [ILs]-1α, -1β, -4, -6, -8, -10, -12p70, -13, -17A, interferon [IFN]-α, IFN-γ, monocyte chemotactic protein [MCP]-1, E-selectin, P-selectin, and soluble intercellular adhesion molecule-1 [sICAM-1]) in the AqH were measured using multiplex beads immunoassay. We evaluated the correlation among AqH cytokine levels, CCT, CCV 4mm , and CCV 6mm in eyes with bullous keratopathy. Results The levels of protein, ILs-4, -6, -8, -10, -12p70, and -17A, MCP-1, IFN-γ, E-selectin, P-selectin, and sICAM-1 were significantly higher in eyes with bullous keratopathy compared with those of the normal control subjects (all P P = .0009) and sICAM-1 (r = 0.448, P = .0005). CCV 4mm was significantly correlated with the levels of IL-13 (r = 0.514, P = .0022) and sICAM-1 (r = 0.404, P = .0019). CCV 6mm was significantly correlated with the level of sICAM-1 (r = 0.459, P = .0003). Conclusion The severity of corneal edema in eyes with bullous keratopathy was associated with the levels of specific cytokines in the AqH.
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