The effect of proctocolectomy on serum antibody levels against cow's milk proteins in patients with chronic ulcerative colitis, with special reference to liver changes

Scandinavian Journal of Gastroenterology
P AitolaM Matikainen


The levels of antibodies against cow's milk proteins in ulcerative colitis (UC) were used to study whether mucosal inflammation leads to immune recognition, as a marker of enhanced permeability, of dietary proteins. A further purpose was to study the effect of proctocolectomy on the serum antibody levels against cow's milk proteins and their relation to biochemical and histologic liver abnormalities associated with ulcerative colitis. Serum antibody levels against six cow's milk proteins, alpha-casein, alpha-lactalbumin (LA), beta-lactoglobulin A (LGA), beta-lactoglobulin B (LGB), bovine serum albumin (BSA), and whole milk powder (MP) were determined before and after (mean, 24 months) proctocolectomy in 15 patients with ulcerative colitis. Simultaneously, serum liver enzymes were analyzed. A liver biopsy specimen was also obtained at proctocolectomy. Before proctocolectomy IgA antibody levels were significantly increased against all antigens except BSA. Increased levels of IgM antibodies against LGA, LGB, and BSA were also detected. IgG antibodies were significantly increased only against LGA. After proctocolectomy IgA and IgM antibody levels decreased significantly (p < 0.05) against LGA, LGB, and LA, whereas IgG antibodies in...Continue Reading


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