Leucocyte migration studies with spleen preparations in Crohn's disease

Leukocyte migration test in Crohn's disease, ulcerative colitis, and ankylosing spondylitis using Crohn's colon homogenate, mitochondrial, and microsomal fractions

Leukocytes from 33 patients with Crohn's disease, 20 patients with ulcerative colitis, and 20 patients with ankylosing spondylitis were tested for evidence of abnormal migration in the presence of preparations of colon from a patient with Crohn's disease. None of the patients was on treatment with immunosuppressive drugs. The test was also performed with leucocytes from 12 health subjects. Significant alteration was seen in the Crohn's disease group, particularly when the antigen used was mitochondrial or microsomal fraction of colon mucosa, whereas the patients in the ulcerative colitis group showed reactivity only with the whole colon homogenate and not with the subcellular fractions. The ankylosing spondylitis group showed no statistical difference from the normal controls with any of the antigens.

Leucocyte migration studies in Crohn's disease using Crohn's colon homogenate and mitochondrial and microsomal fractions

Leucocytes from 38 patients with Crohn's disease were tested for evidence of migration inhibition in the presence of preparations of colon from a patient with this disease. The occurrence of migration inhibition showed a positive correlation with clinically active disease and a negative correlation with immunosuppressive treatment. It was not seen with leucocytes from 12 healthy subjects.