Table 3.

The effect of Lucilia sericata antimicrobial peptides used alone and in combination on the E. coli JM83 cell surface.

	Control	Lser-Stomoxyn (0.25 µM)	Lser-PRP2 (50 µM)	Stomoxyn (0.25 µM) + Lser-PRP2 (50 µM)
Roughness [nm]	0.843 (± 0.22)	1.102 (± 0.373)b***	1.002 (± 0.354)a*	0.856 (± 0.295)ab
Young's modulus [MPa]	2458 (± 24.52)	2601 (± 32.19)**	2166.14 (± 480.23)	2791.5 (± 429.81)
Adhesion forces [nN]	0.174 (± 0.04)	0.236 (± 0.079)a***	0.306 (± 0.160)***	0.3541 (± 0.169)a***

The bacteria were incubated alone (control) or in the presence of Lser-stomoxyn (0.25 µM) or Lser-PRP2 (50 µM), or both and then analyzed by atomic force microscopy. The results are presented as means of 25 fields from each sample ± standard deviation (SD). The same letters indicate statistically significant differences between the peptide-treated experimental groups (Mann-Whitney U test). The asterisks indicate statistically significant differences of the peptide-treated bacteria compared to controls (*p < 0.05; **p ≤ 0.01; ***p ≤ 0.001).