Chronic Inflammation and Neutrophil Activation as Possible Causes of Joint Diseases in Ballet Dancers

Table 1

Effects of classical ballet class on the serum concentrations of IL-1β, TNF-α, IL-6, IL-10, IL-2, IL-4 and C3 were quantified in the plasma, and serum concentrations of IgA and IgG were quantified in the serum of dancers before, immediately after and 18 hours after a ballet class.

	Before	After	18 hours after
IL-1β (ng/mL)	0.29±0.08	0.25±0.06	0.23±0.06
TNF-α (ng/mL)	0.16±0.04	0.15±0.04	0.12±0.01
IL-6 (ng/mL)	0.11±0.03	0.13±0.03	0.08±0.02
IL-10 (ng/mL)	0.12±0.01	0.12±0.01	0.13±0.01
IL-2 (ng/mL)	0.04±0.005	0.04±0.005	0.02±0.02
IL-4 (ng/mL)	88.00±1.00	86.85±1.93	81.74±0.74^∗
IgA (mg/dL)	198±13	185±17	196±13
IgG (mg/dL)	27±3	29±3	33±3
C3 (mg/dL)	219±0.87	218±2.00	219±2.55

The values are presented as the means ± standard errors of 13 dancers. mg/dL: milligrams per deciliter. *𝑃<0.05 for comparison to pre-class conditions.