Monocytes in Inflammatory Bowel Disease: Phagocytosis and Intracellular Killing

Overview

Journal J Clin Pathol

Specialty Pathology

Date 1980 Oct 1

PMID 7430357

Citations 17

Authors

A S Mee

M Szawatakowski

D P Jewell

Affiliations

Soon will be listed here.

Abstract

The ability of peripheral blood monocytes from patients with ulcerative colitis and Crohn's disease to phagocytose and kill a standard strain of Staphyloccus aureus has been studied. Using lysostaphin, a rapidly acting muralytic enzyme, phagocytosis could be accurately differentiated from intracellular killing. When compared with normal healthy individuals and patients with gastrointestinal diseases not thought to be immunologically mediated, monocytes from patients with inflammatory bowel disease showed a statistically significant increase in the number of bacteria phagocytosed in 2 hours. There was no difference, however, between patients with Crohn's disease and those with ulcerative colitis. For all groups studied, more than 95% of ingested organisms were killed, and there was no difference between groups. These results suggest that peripheral blood monocytes in patients with Crohn's disease and ulcerative colitis are activated. It is unlikely that the granulomata of Crohn's disease result from a defect in the microbicidal function of the monocyte/macrophage system.

Citing Articles

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Killing of Escherichia coli by Crohn's Disease Monocyte-derived Macrophages and Its Enhancement by Hydroxychloroquine and Vitamin D.

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Peripheral monocyte functions and activation in patients with quiescent Crohn's disease.

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Motility of neutrophils and monocytes in Crohn's disease and ulcerative colitis.

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Comparative studies of mononuclear phagocyte function in patients with Crohn's disease and colon neoplasms.

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