Table 1.

Effect on invasion of S. dysenteriae. S. flexneri and S. sonnei of whey, casein, PIS (sIgA), P2S (Lf, SC and albumin, SA), P3S (α-lactoalbumin), P2H (fSC and SA) and P3H (Lf).

	S. dysenteriae wild type				S. flexneri wild type				S. sonnei wild type
	Bacteria	n°/Hela cell	% inhibition	p	bacteria	n°/Hela cell	% inhibition	p	bacteria	n°/Hela cell	% inhibition	p
Fraction	control	Tested			control	tested			control	tested
Whey	5.2 ± 0,4	2.2 ± 0,2	58	0.001	0.68 ± 0.2	0.28 ± 0.2	74	0.007	0.49 ± 0.24	0.18 ± 0.15	62	0.008
casein	6.6 ± 1,0	6.5 ± 1,1	-	ns	0.89 ± 0.1	0.83 ± 0.2	-	ns	0.53 ± 0.10	0.52 ± 0.12	-	ns
slgA	6.1 ± 0,1	2.7 ± 0,2	44	0.006	1. 60 ± 0.08	0.56 ± 0.08	58	0.009	1.98 ± 0.60	1.15 ± 0.09	42	0.005
Lf+SC+AS	6.6 ± 0,4	2.7 ± 0,2	59	0.008	0.79 ± 0.04	0.51 ± 0.04	36	0.008	0.70 ± 0.05	0.16 ± 0.05	77	0.007
α-lactoalbumin	7.2 ± 0,4	7.1 ± 0,2	-	ns	0.81 ± 0.05	0.79 ± 0.02	-	ns	0.92 ± 0.60	0.85 ± 0.45	-	ns
fSC	5.8 ± O,5	3.4 ± 0,2	42	0.009	1,3 ± 0.02	0.75 ± 0.04	42	0.003	2.00 ± 0.05	0.84 ± 0.04	58	0.01
Lf	6.2 ± 0,8	3.2 ± 0,1	48	0.002	0.8 ± 0.09	0.42 ± 0.05	48	0.004	1.80 ± 0.02	0.65 ± 0.10	64	0.03

ns = not significative. p = statistical analyses (t-Student independent)