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. 2024 Aug;262(8):2593-2600.
doi: 10.1007/s00417-024-06417-w. Epub 2024 Mar 6.

Cytokine analysis of aqueous humor in patients with cytomegalovirus corneal endotheliitis

Xuan-Jun Zhang  1   2 , Jia-Xin Zhang  1   2 , Yi Qu  1   2 , Rong-Mei Peng  1   2 , Pei Zhang  1   2 , Jing Hong  3   4
Affiliations

Cytokine analysis of aqueous humor in patients with cytomegalovirus corneal endotheliitis

Xuan-Jun Zhang et al. Graefes Arch Clin Exp Ophthalmol. 2024 Aug.

Abstract

Purpose: To evaluate cytokine levels of aqueous humor in patients with cytomegalovirus (CMV) corneal endotheliitis and their relationships with CMV DNA load.

Methods: 44 aqueous humor samples were obtained from 26 patients with CMV corneal endotheliitis at various stages of treatment. 33 samples obtained from cataract patients during the same period were selected as a control group. Each sample was used to measure the concentration of the CMV DNA load using real-time quantitative polymerase chain reaction, and to examine the levels of IL-6, IL-8, IL-10, MCP-1, VCAM-1, VEGF, IP-10, G-CSF, ICAM-1 and IFN-γ using a cytometric bead array.

Results: All 10 cytokines were found to have statistically significant differences between the CMV endotheliitis and cataract groups. The Spearman correlation test showed that the concentration of CMV DNA load was significantly associated with the levels of IL-6 (P = 0.005, r = 0.417), IL-8 (P < 0.001, r = 0.514), IL-10 (P < 0.001, r = 0.700), MCP-1 (P = 0.001, r = 0.487), VEGF (P < 0.001, r = 0.690), IP-10 (P = 0.001, r = 0.469), G-CSF (P < 0.001, r = 0.554) and ICAM-1 (P < 0.001, r = 0.635), but not significantly associated with VCAM-1 (P = 0.056) and IFN-γ (P = 0.219).

Conclusions: There was a combined innate and adaptive immune response in aqueous humor in patients with CMV endotheliitis. Levels of multiple cytokines were significantly correlated with viral particle. Cytokines are potential indicators to help diagnose CMV endotheliitis, evaluate disease activity and assess treatment response.

Keywords: Aqueous humor; Corneal endotheliitis; Cytokine; Cytomegalovirus; Diagnosis.

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