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Defective monocyte chemotactic responsiveness in patients with active tuberculosis
1Department of Medicine, University of Nigeria Teaching Hospital, Enugu.
Immunology Letters
|October 1, 1987
Summary
Tuberculosis impairs monocyte movement, affecting both random and directed cell migration. These immune cell defects improve with tuberculosis chemotherapy.
Area of Science:
- Immunology
- Infectious Diseases
- Cell Biology
Background:
- Tuberculosis (TB) is a significant global health challenge.
- Understanding immune cell function in TB is crucial for developing effective treatments.
Purpose of the Study:
- To investigate monocyte migration in patients with newly diagnosed tuberculosis.
- To compare monocyte function in TB patients with healthy controls.
Main Methods:
- Utilized a raft modification of the Boyden chamber to assess monocyte migration.
- Studied 15 newly diagnosed tuberculosis patients and 17 matched healthy controls.
- Chemottaxis was induced using 2% casein.
Main Results:
- Patients with tuberculosis showed significantly impaired in vitro monocyte random locomotion and chemotaxis compared to controls.
- No correlation was observed between impaired monocyte migration and monocyte count, disease extent, or tuberculin skin test reactivity.
- Monocyte migration defects were corrected during chemotherapy.
Conclusions:
- Tuberculosis is associated with intrinsic defects in monocyte migration.
- These immune dysfunctions are reversible with effective chemotherapy.
- Monocyte migration assays may serve as a potential biomarker for TB disease activity and treatment response.