Table 1.

Correlation between NKA concentrations and levels of pro-oxidant factors, anti-oxidant factors and cytokines after overnight incubation with LPS (100 ng/ml)

NKA vs:	Pearson r	95% CI	P
Peroxidase activity	0.85	0.47 - 0.96	***
H2O2	0.84	0.44 - 0.96	**
MDA	0.63	0.01 - 0.90	*
NO	0.83	0.41 - 0.96	**
TAC	−0.49	−0.86 - 0.20	ns
GSH	−0.63	−0.91 - 0.058	*
SOD	−0.28	−0.77 - 0.43	ns
IL-1β	0.13	−0.55 - 0.70	ns
IL-6	0.82	0.4 0–0.96	**
IL-8	0.30	−0.40 - 0.78	ns
TNF-α	0.19	−0.50 - 0.73	ns

* P<0.05, ** P<0.01, *** P<0.001, ns: not significant. GSH glutathione, IL interleukin, MDA malondialdehyde, NKA neurokinin A, NO nitric oxide, ROS reactive oxygen species, SOD superoxide dismutase, TAC total anti-oxidant capacity, TNF-α tumor necrosis factor-α