S100A8 and gastritis: All H. pylori tested in this study were susceptible to amoxicillin (MIC90 0.25 μg/ml), two (6 %) out of 32 clinical isolates tested were clarithromycin resistant, one of which isolated from a patient suffering from gastritis harbouring the cagA+/vacAs1/m1 genotype, four (12 %) out of 32 clinical isolates tested were resistant to metronidazole.