The immunopathologic effects of mycoplasma pneumoniae and community-acquired respiratory distress syndrome toxin a primate model

Diego J. Maselli, Jorge L. Medina, Edward G. Brooks, Jacqueline J. Coalson, Thirumalai R. Kannan, Vicki T. Winter, Molly Principe, Marianna P. Cagle, Joel B. Baseman, Peter H. Dube, Jay I. Peters

Producción científica: Editorialrevisión exhaustiva

32 Citas (Scopus)

Resumen

Mycoplasma pneumoniae infection has been linked to poor asthma outcomes. M. pneumoniae produces an ADP-ribosylating and vacuolating toxin called community-acquired respiratory distress syndrome (CARDS) toxin that has a major role in inflammation and airway dysfunction. The objective was to evaluate the immunopathological effects in primates exposed to M. pneumoniae or CARDS toxin. A total of 13 baboons were exposed to M. pneumoniae or CARDS toxin. At Days 7 and 14, BAL fluid was collected and analyzed for cell count, percent of each type of cell, CARDS toxin by PCR, CARDS toxin by antigen capture, eosinophilic cationic protein, and cytokine profiles. Serum IgM, IgG, and IgE responses to CARDS toxin were measured. All animals had a necropsy for analysis of the histopathological changes on lungs. No animal developed signs of infection. The serological responses to CARDS toxin were variable. At Day 14, four of seven animals exposed to M. pneumoniae and all four animals exposed to CARDS toxin developed histological “asthma-like” changes. T cell intracellular cytokine analysis revealed an increasing ratio of IL-4/IFN-g over time. Both M. pneumoniae and CARDS toxin exposure resulted in similar histopathological pulmonary changes, suggesting that CARDS toxin plays a major role in the inflammatory response.

Idioma originalEnglish (US)
Páginas (desde-hasta)253-260
Número de páginas8
PublicaciónAmerican journal of respiratory cell and molecular biology
Volumen58
N.º2
DOI
EstadoPublished - feb 2018

ASJC Scopus subject areas

  • Molecular Biology
  • Pulmonary and Respiratory Medicine
  • Clinical Biochemistry
  • Cell Biology

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