Abstract

To compare the plasma immune globulin and complement levels in different sorts of glaucoma to assess its association. Cohort study. Plasma samples were collected from 226 normal controls and 236 glaucoma patients included 92 with acute primary angle-closure glaucoma (APACG), 76 with chronic primary angle-closure glaucoma (CPACG), 68 with primary open-angle glaucoma (POAG). 163 glaucoma patients with high intraocular pressure(IOP) was classified as a subgroup. Six indexes were analyzed: C3, C4, CH50, IgA, IgG, and IgM. There was a significant difference in C4, IgA, IgG, and IgM between patients with high IOP and normal controls groups(P < 0.01). TheC4 (0.27 ± 0.69 g/L), IgA (3.11 ± 1.04 g/L), IgG (12.07 ± 1.92 g/L) and IgM (1.17 ± 0.49 g/L) were higher(P < 0.05) in the high IOP groups compared with the normal controls (C4:0.25 ± 0.07 g/L, IgA: 2.54 ± 1.07 g/L, IgG: 11.21 ± 2.22 g/L, IgM:0.99 ± 0.41 g/L). There was a significant difference in age, C3, IgA, IgG, and IgM among the normal control, APACG, CPACG, and POAG. The C3 level in the APACG group (1.14 ± 0.16 g/L) was higher than normal group (1.06 ± 0.18 g/L). The IgA level was lower(P < 0.05) in the normal group (2.54 ± 1.07 g/L) compared with APACG (3.16 ± 0.97 g/L) and POAG group (2.91 ± 1.11 g/L). The IgG level of normal controls (11.21 ± 2.22 g/L) was lower (P < 0.05) than APACG group (12.15 ± 2.02 g/L) and CPACG group (11.95 ± 2.28 g/L). The IgM level was lower(P < 0.05) in the normal group (0.99 ± 0.41 g/L) compared with the APACG (1.24 ± 0.66 g/L) and CPACG group (1.17 ± 0.45 g/L). The levels of the plasma expression of C3, IgA, IgG, IgM may be useful for discriminating the glaucoma patients and for assessing the progress of glaucoma in different sorts.

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