Related Experiment Videos
[Cell immunity response in human pulmonary tuberculosis. Review]
Bruno Rivas-Santiago1, Patricia Vieyra-Reyes, Zaida Araujo
1Departamento de Investigación en Microbiología, Instituto Nacional de Enfermedades Respiratorias, Universidad Nacional Autónoma de México, Ciudad de México, México.
Investigacion Clinica
|December 16, 2005
Summary
Human tuberculosis (TB) is a global health issue caused by Mycobacterium tuberculosis. Effective immune responses, particularly Th1 cell immunity involving various cells and cytokines, are crucial for controlling latent or active TB infections.
Area of Science:
- Immunology
- Infectious Diseases
- Public Health
Context:
- Tuberculosis (TB), caused by Mycobacterium tuberculosis, affects one-third of the global population.
- Most infected individuals control the bacilli through immune responses, remaining latent.
- A small percentage develop active disease (primary progressive or reactivation TB).
Purpose:
- To summarize the immune mechanisms involved in controlling Mycobacterium tuberculosis infection.
- To highlight the key cellular and molecular players in the host's defense against TB.
Summary:
- Control of M. tuberculosis infection relies on a robust immune response, primarily Th1 cell-mediated immunity.
- This involves alveolar macrophages, T lymphocytes (CD4+, CD8+, T gammadelta), and natural killer (NK) cells.
- Key cytokines (IL-2, IFN-gamma, IL-12, IL-18, TNF-alpha) and chemokines (RANTES, MCP-1, MIP-1alpha, IL-8) facilitate cell migration and granuloma formation.
Impact:
- Understanding these immune responses is vital for developing effective TB vaccines and treatments.
- Identifying critical immune components can aid in predicting disease progression and therapeutic targets.