Association between Aqueous Cytokines and Diabetic Retinopathy Stage

Author:

Wu Hailiang12,Hwang De-Kuang34,Song Xudong1ORCID,Tao Yong5ORCID

Affiliation:

1. Beijing Tongren Eye Center, Beijing Tongren Hospital, Capital Medical University, Beijing, China

2. Beijing Ophthalmology & Visual Sciences Key Laboratory, Beijing, China

3. Department of Ophthalmology, Taipei Veterans General Hospital, Taipei, Taiwan

4. Department of Ophthalmology, School of Medicine, National Yang-Ming University, Taipei, Taiwan

5. Department of Ophthalmology, Beijing Chaoyang Hospital, Capital Medical University, Beijing, China

Abstract

Purpose.To measure the concentrations of various cytokines in the aqueous humor from patients with different stages of diabetic retinopathy.Methods.All selected cataract patients were categorized into 4 groups: the control group (patients without diabetes), nonretinopathy (NDR) group (diabetic patients without retinopathy), nonproliferative diabetic retinopathy (NPDR) group, and proliferative diabetic retinopathy (PDR) group. The aqueous concentrations of interleukin- (IL-) 1β, IL-2, IL-4, IL-5, IL-6, IL-10, interferon-γ, tumor necrosis factor-α, and vascular endothelial growth factor (VEGF) from patients were measured using the cytometric bead array technique.Results.In this study, 10, 22, 15, and 14 patients were included in the control, NDR, NPDR, and PDR groups, respectively. No difference was observed in the aqueous concentrations of all cytokines between the control group and the NDR group. By contrast, comparison of these groups revealed that the aqueous concentrations of most inflammatory cytokines were significantly higher in the PDR and NPDR groups. In addition, the concentrations of IL-2, IL-5, and VEGF were higher in the PDR group than those in the NPDR group.Conclusions.Aqueous concentrations of various cytokines increased with the severity of patients’ diabetic retinopathy. This finding implies that these cytokines might play a role in the progression of diabetic retinopathy.

Funder

Fok Ying-Tong Education Foundation

Publisher

Hindawi Limited

Subject

Ophthalmology

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