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Related Experiment Videos

Aspergillus and asthma--any link?

C M Hogaboam1, K J Carpenter, J M Schuh

  • 1Department of Pathology, University of Michigan Medical School, Rm 5216B, Med Sci I, 1301 Catherine Road, Ann Arbor, MI 48109-0602, USA. Hogaboam@med.umich.edu

Medical Mycology
|August 23, 2005
PubMed
Summary
This summary is machine-generated.

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The integrated immune system uses innate responses to inform acquired immunity. In fungal asthma, specific chemokines impair innate immunity, worsening allergic disease and suggesting new therapeutic targets.

Area of Science:

  • Immunology
  • Allergy and Asthma Research
  • Mycology

Background:

  • Innate and acquired immune responses are interconnected, not separate systems.
  • Pattern recognition receptors (PRRs) mediate information transfer from innate to acquired immunity.
  • Aspergillus allergens can exacerbate asthma, leading to significant lung pathology.

Purpose of the Study:

  • To investigate the role of specific chemokines in Aspergillus-induced chronic fungal asthma.
  • To elucidate the mechanism by which chemokines influence the innate immune response in asthma.
  • To identify potential therapeutic targets for fungal asthma.

Main Methods:

  • Utilized a model of chronic fungal asthma.
  • Investigated the function of thymus-associated and regulated chemokine (TARC/CCL17) and macrophage-derived chemokine (MDC/CCL22) via CCR4.

Related Experiment Videos

  • Assessed the impact of chemokines on pattern recognition receptor (PRR) expression on immune cells.

    • Main Results:

    • TARC/CCL17 and MDC/CCL22 were found to impair the innate anti-fungal immune response.
    • These chemokines promote the maintenance of acquired Th2-mediated asthmatic disease.
    • Chemokine activity involves regulating the expression of PRRs like toll-like receptors (TLRs) and triggering receptor expressed on myeloid cells (TREM-1).

    Conclusions:

    • The link between Aspergillus and asthma severity lies in the host's innate immune response.
    • Impaired innate immunity by specific chemokines contributes to chronic fungal asthma.
    • Targeting these chemokine pathways offers potential therapeutic strategies for allergic lung diseases.