Relationship Between Chemokine in Aqueous Humor and Primary Glaucoma: A Meta-Analysis.

OBJECTIVE

Glaucoma is a group of diseases characterized by optic nerve damage and corresponding visual field loss as clinical changes. A close relationship has been identified between chemokine in aqueous humor and primary glaucoma; however, this association remains controversial.

DESIGN

Systematic review and meta-analysis.

METHODS

The Web of Science, Wiley Online Library, PubMed, and Embase databases were searched. The title or abstract search term "glaucoma" was used together with "chemokine". Meta-analysis results were presented as the standardized mean difference (SMD) with a corresponding 95% confidence interval (Cl).

RESULTS

Twenty studies were included in this meta-analysis, which showed that patients with primary glaucoma had significantly elevated CCL2 (SMD: 0.48, 95% CI [0.11, 0.86]), CCL4 (SMD: 0.74, 95% CI [0.30, 1.17]), CCL5 (SMD: 0.97, 95% CI [0.07, 1.85]), CCL7 (SMD: 2.28, 95% CI [0.86, 3.71]), CXCL8 (SMD: 1.75, 95% CI [1.04, 2.46]), and CXCL10 (SMD: 1.45, 95% CI [0.46, 2.43]) levels in aqueous humor compared to the control group (P < .05).

CONCLUSIONS

This systematic review is the first to systematically and comprehensively evaluate chemokine levels in aqueous humor of patients with primary glaucoma. Clarifying the role of chemokines will be helpful for the treatment of glaucoma.