Table 2.

Concentrations of BAFF in serum, saliva, and SF of patients with SLE, RA, SS, periodontal disease, xerostomia, ankylosing spondylitis, and osteoarthritis.

Sample and populationSamples, nMean BAFF concentration (SD), μg/LPositive, n (%)
Serum
 SLE4410.6 (8.5)23 (52)1
 RA289.7 (1.5)5 (18)2
 SS5815.8 (12.9)35 (51)
 Normal684.8 (3.8)
Saliva
 SS157.4 (2.1)10 (67)3
 Periodontal disease102.2 (0.6)5 (50)
 Xerostomia151.0 (0.4)4 (27)
SF
 RA1013.2 (3.5)9 (90)
 Ankylosing spondylitis811.7 (3.9)6 (75)
 Osteoarthritis95.9 (1.1)0 (0)