Oral and fecal Campylobacter concisus strains perturb barrier function by apoptosis induction in HT-29/B6 intestinal epithelial cells.

Only claudin-5 showed a reduced expression level to 66±8% of the control value in whole cell lysate protein preparations ( P <0.05, n = 9), whereas claudin-4 showed a tendency towards upregulation which did not reach statistical significance (194±37% of control, n = 9, n.s. ) ( Figure 2 ).

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