Concentration-dependent inhibition percent of superoxide anion generation and neutrophil peroxidase (NPO) release of asthmatic patient neutrophil by total flavonoid extract of P. kotschyi.

Table 1: Concentration-dependent inhibition percent of superoxide anion generation and neutrophil peroxidase (NPO) release of asthmatic patient neutrophil by total flavonoid extract of P. kotschyi.

Total flavonoid extract (µg.ml^-1)	NPO release inhibition (%)	P value	Superoxide anion generation inhibition (%)	P value
8	5.89 ± 7.86	ns	2.62 ± 2.42	ns
16	18.28 ± 8.34	^*	9.63 ± 3.50	ns
32	31.62 ± 6.87	^***	19.70 ± 7.07	ns
64	54.53 ± 12.13	^***	34.01 ± 20.44	^**
128	72.29 ± 5.69	^***	79.31 ± 8.62	^***
IC₅₀	76.03 ± 12.81		84.89 ± 11.95

*p < 0.05, **p < 0.01, ***p < 0.001 compared with effect of fMLP (10 mM.ml^-1) which was 0% inhibition; Ns: No difference.