Serum periostin levels and asthma
The mean serum periostin levels of children with severe asthma (63.8 ± 10.8) were significantly higher than in children with moderate asthma (53.3 ± 12.7) and mild asthma (47.4 ± 11.1) (p < 0.001) (Figure 1b). No significant differences in serum periostin levels were found in children with asthma when compared according to gender, asthma control status, aeroallergen sensitization, presences of allergic rhinitis or atopic dermatitis (Table 4).