RT Journal Article SR Electronic T1 Acute Helicobacter pylori infection: clinical features, local and systemic immune response, gastric mucosal histology, and gastric juice ascorbic acid concentrations. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1415 OP 1418 DO 10.1136/gut.32.11.1415 VO 32 IS 11 A1 G M Sobala A1 J E Crabtree A1 M F Dixon A1 C J Schorah A1 J D Taylor A1 B J Rathbone A1 R V Heatley A1 A T Axon YR 1991 UL http://gut.bmj.com/content/32/11/1415.abstract AB The symptomatology of a case of acute infection with Helicobacter pylori is described, together with the accompanying changes in gastric mucosal histology, local and systemic humoral immune response, and gastric ascorbic acid concentration. The patient was an endoscopist, previously negative for the carbon-14 urea breath test, who had a week of epigastric pain and then became asymptomatic. H pylori was detected by culture of antral biopsy specimens and was still present after 74 days. Five days after infection the histological findings showed acute neutrophilic gastritis; by day 74 changes of chronic gastritis were evident. The patient seroconverted by IgG enzyme linked immunosorbent assay by day 74, but a mucosal IgM and IgA response was evident as early as day 14. Infection was accompanied by a transient hypochlorhydria but a sustained fall in gastric juice ascorbic acid concentration.