Format

Send to:

Choose Destination
See comment in PubMed Commons below
Proc Natl Acad Sci U S A. 2004 Jan 13;101(2):586-90. Epub 2003 Dec 29.

IL-13 receptor alpha 2 down-modulates granulomatous inflammation and prolongs host survival in schistosomiasis.

Author information

  • 1Immunopathogenesis Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.

Abstract

An important feature of many chronic parasitic infections is the ability of the invading pathogen and host to establish a compromise, which ensures successful parasitism without killing the infected host. For many helminth infections, down-modulating the immune response is critical because persistent inflammation can become more damaging to the host than the invading pathogen itself. Such is the case with schistosomiasis mansoni, where chronic granulomatous inflammation in the liver causes portal hypertension, porto-pulmonary shunting, bleeding from collateral bypass vessels, and eventual death if not suppressed effectively. CD4(+) T helper type 2 cells (Th2) (secreting IL-4, IL-5, and IL-13) characterize the host response after Schistosoma mansoni infection, and recent studies have identified IL-13 as the principal mediator of hepatic fibrosis. Here, we show that the IL-13 receptor alpha 2 (IL-13R alpha 2) is a critical mediator of immune down-modulation, identifying the receptor as a life-sustaining off signal for chronic and pernicious inflammation in schistosomiasis.

PMID:
14699044
[PubMed - indexed for MEDLINE]
PMCID:
PMC327191
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Write to the Help Desk