Table I.
Summary of study group characteristics and observed expressions.
| Variable | Control group | Mild ankylosing spondylitis group | Severe ankylosing spondylitis group |
|---|---|---|---|
| Number of samples (n) | 20 | 23 | 22 |
| Age (years) | 55.05±6.42 | 52.31±8.24 | 51.22±6.78 |
| Gender, male/female (n) | 10/10 | 12/11 | 11/11 |
| Duration of disease (years) | - | 2.7±2.56 | 3.4±2.45 |
| α-globulin (g/cl) | 0.22±0.05 | 0.52±0.12a | 0.68±0.08a |
| γ-globulin (g/cl) | 0.37±0.12 | 0.98±0.29a | 0.78±0.11a |
| IgG (mg/cl) | 827.23±121.69 | 1328±48.90a | 1438±104.87a |
| IgA (mg/cl) | 12.55±1.95 | 21.69±2.62a | 29.62±3.58a |
| IgM (mg/cl) | 10.64±2.69 | 25.62±1.29a | 31.57±2.02a |
| Serum complement C3 (U/ml) | 88.65±10.62 | 152.70±26.62a | 180.59±20.55a |
| Serum complement C4 (U/ml) | 70.52±20.64 | 198.85±38.25a | 201.92±44.52a |
a
P<0.05, vs. control group.
Data are presented as the mean ± standard error of mean. Ig, immunoglobulin.