Journal
INFECTION AND IMMUNITY
Volume 74, Issue 3, Pages 1924-1932Publisher
AMER SOC MICROBIOLOGY
DOI: 10.1128/IAI.74.3.1924-1932.2006
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Funding
- Medical Research Council [G0400795] Funding Source: Medline
- Wellcome Trust [059532] Funding Source: Medline
- Medical Research Council [G0400795] Funding Source: researchfish
- MRC [G0400795] Funding Source: UKRI
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Illness due to respiratory virus infection is often induced by excessive infiltration of cells into pulmonary tissues, leading to airway occlusion. We show here that infection with Trichinella spiralis results in lower levels of tumor necrosis factor in bronchoalveolar lavage fluid and inhibits cellular recruitment into the airways of mice coinfected with influenza A virus. Infiltration of neutrophils and CD4(+) and CD8(+) lymphocytes was reduced, resulting in animals gaining weight more rapidly following the initial phase of infection. Influenza resulted in a generalized increase in vascular permeability in pulmonary tissues, and this was suppressed by parasite infection, although the effects were restricted to the early phase of trichinosis. Moreover, the number of cells producing interleukin-10 (IL-10), and the local levels of this cytokine, were reduced, suggesting that amelioration of pulmonary pathology by parasite infection occurs independently of IL-10 production.
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