[Changes in secretory immunoglobulin A level in the blood serum of patients with peptic ulcer].

Serum levels of secretory IgA were measured in 66 patients with aggravation of peptic ulcer versus 52 healthy subjects. IgA concentrations in the patients were found elevated, the rise being dependent on the ulcer site, standing and severity of course. Treatment-induced decline of the ulcer exacerbation was accompanied by a fall in IgA levels. It is hold that serum IgA can serve a marker of gastroduodenal ulcer exacerbation.