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Processing of Bronchoalveolar Lavage Fluid and Matched Blood for Alveolar Macrophage and CD4+ T-cell Immunophenotyping and HIV Reservoir Assessment
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Atherosclerosis: pathogenesis and increased occurrence in individuals with HIV and Mycobacterium tuberculosis

Timothy Guilford1, Devin Morris, Dennis Gray

  • 1Your Energy Systems, Palo Alto, CA, USA.

HIV/AIDS (Auckland, N.Z.)
|November 19, 2011
PubMed

Insights

Oxidized LDL impairs macrophage function, increasing susceptibility to Mycobacterium tuberculosis infection in individuals with atherosclerosis, especially those with HIV. This highlights a critical link between cardiovascular disease and infectious disease risk.

Area of Science:

  • Immunology
  • Cardiovascular Disease
  • Infectious Disease

Background:

  • Atherosclerosis, a major cause of heart disease and stroke, is linked to increased risk in HIV-infected individuals.
  • Human Immunodeficiency Virus (HIV) damages CD4+ T cells, impairing immune function and increasing susceptibility to opportunistic infections like tuberculosis.
  • Acquired Immunodeficiency Syndrome (AIDS) is a significant public health concern in the US, with over 1 million Americans potentially infected with HIV.

Purpose of the Study:

  • To review the impact of oxidized low-density lipoproteins (oxLDL) on macrophage function.
  • To examine how oxLDL-impaired macrophages influence susceptibility to Mycobacterium tuberculosis infection.
  • To compare these effects in individuals with atherosclerosis, with and without HIV infection.

Main Methods:

  • Literature review summarizing existing research on oxLDL, macrophage function, and Mycobacterium tuberculosis.
  • Analysis of studies investigating the interplay between HIV, atherosclerosis, and immune response.
  • Synthesis of findings related to cellular mechanisms and disease susceptibility.

Main Results:

  • Oxidized low-density lipoproteins impair macrophage functions critical for combating infections.
  • This impairment is exacerbated in individuals with atherosclerosis, particularly those co-infected with HIV.
  • Compromised macrophage function enhances susceptibility to Mycobacterium tuberculosis infection.

Conclusions:

  • Oxidized LDL plays a key role in macrophage dysfunction within the context of atherosclerosis and HIV.
  • This dysfunction increases the risk and severity of Mycobacterium tuberculosis infections in vulnerable populations.
  • Understanding these mechanisms is crucial for developing targeted therapeutic strategies.

Keywords:
AIDSHIVMycobacterium tuberculosis

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