Related Experiment Videos
[Diabetes mellitus with intractable bacterial infections]
1Second Department of Internal Medicine, Hamamatsu University School of Medicine.
Nihon Rinsho. Japanese Journal of Clinical Medicine
|February 1, 1994
Summary
Diabetes impairs immune cell function, leading to severe lung infections. Alveolar macrophages in diabetics show reduced ability to fight bacteria, persisting even after blood sugar control.
Area of Science:
- Immunology
- Endocrinology
- Pulmonology
Context:
- Diabetes mellitus is associated with severe and persistent infections.
- Understanding the cellular mechanisms behind these intractable infections is crucial.
- Previous research has not fully elucidated the role of lung immune cells in diabetic complications.
Purpose:
- To evaluate the function of immune cells, specifically neutrophils and alveolar macrophages, in the context of diabetes mellitus.
- To investigate the impact of diabetes on the chemotactic and bactericidal abilities of alveolar macrophages.
- To determine if improved glycemic control reverses these cellular dysfunctions.
Summary:
- Peripheral blood neutrophil function is significantly decreased in patients with diabetes mellitus.
- Alveolar macrophages (AM) in bronchoalveolar lavage fluid (BALF) are increased in diabetics, often exhibiting a foamy appearance.
- Both chemotactic and bactericidal functions of AM are markedly reduced, with greater impairment observed in insulin-dependent diabetes mellitus (IDDM) compared to non-insulin-dependent diabetes mellitus (NIDDM).
Impact:
- The study reveals that metabolic abnormalities in diabetes extend to the cellular level within the lungs.
- Impaired alveolar macrophage function in diabetes may contribute to the severity and persistence of pulmonary infections.
- These findings highlight a potential therapeutic target for managing lung infections in diabetic patients.