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[HIV infection and tuberculosis].

Hideaki Nagai1

  • 1Department of Pulmonary Diseases, National Tokyo Hospital, 3-1-1, Takeoka, Kiyoseshi, Tokyo, 204-8585, Japan. hnagai@tokyo.hosp.go.jp

Kekkaku : [Tuberculosis]
|March 27, 2003
PubMed
Summary
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Human immunodeficiency virus (HIV) and tuberculosis co-infection is rising in Japan. Early detection and careful treatment prioritization are crucial for managing HIV-associated tuberculosis, especially with drug-resistant strains.

Area of Science:

  • Immunology and Infectious Diseases
  • Public Health
  • Clinical Medicine

Background:

  • Increasing incidence of human immunodeficiency virus (HIV) and tuberculosis (TB) co-infection in Japan.
  • HIV impairs cellular immunity, particularly CD4-positive cells, compromising defense against Mycobacterium tuberculosis.
  • Co-infection leads to severe TB manifestations, including extrapulmonary and miliary forms, with a high mortality rate for multidrug-resistant strains.

Discussion:

  • HIV-associated TB pathogenesis involves impaired macrophage function, leading to granuloma hypoplasia and dissemination.
  • Drug interactions between anti-HIV protease inhibitors and rifampicin necessitate treatment modifications, prioritizing TB therapy.
  • Transient exacerbation of TB symptoms post-potent anti-HIV therapy may occur due to improved immune response.

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Key Insights:

  • Tuberculosis treatment should precede highly active antiretroviral therapy (HAART) in co-infected patients.
  • Rifabutin is preferred over rifampicin during HAART to mitigate drug-drug interactions.
  • A tuberculin skin test reaction of ≥5 mm induration is considered positive in HIV-infected individuals, warranting preventive treatment.

Outlook:

  • Early detection of TB in HIV-infected individuals and vice versa is critical for improved patient outcomes.
  • BCG vaccination is contraindicated in HIV-positive patients due to the risk of disseminated M. bovis infection.
  • Continued vigilance and adapted treatment strategies are essential for managing the growing challenge of HIV-TB co-infection.