Table 1. Expression of genes responsible for motility and biofilm formation in E. coli CFT073 wild type after 48 h of growth in presence and absence of PIP and RES.

	Piperine		Reserpine
	0.5 µg/mL	5 µg/mL	0.5 µg/mL	5 µg/mL
fliC	0.90 (0.4)	0.68 (0.19)	0.74 (0.19)	0.91 (0.25)
motA	4.1×10−5 (5×10−2)	0.030 (0.01)	8.4×10−6 (1×10−3)	1.2×10−6 (5×10−3)
motB	0.45 (0.09)	0.38 (0.05)	0.55 (0.19)	0.48 (0.19)
fimA	1.4 (0.03)	3.4 (0.17)	2.1 (0.26)	5.2 (0.35)
uvrY	1.6 (0.15)	2.7 (0.40)	1.1 (0.30)	2.4 (0.5)
papA	1.1 (0.15)	1.2 (0.17)	0.89 (0.40)	2.5 (0.35)

Relative mRNA quantities were normalized to that of a housekeeping gene, gapA. Results represent mean fold change values ± SD (in parentheses) for three independent experiments with respect to control. Values in bold font indicate statistically significant differences in mRNA relative value with respect to the control (p<0.05).