Acute bronchial obstruction in sheep: Histopathology and gland cytokine expression

Robert A. Cox, Ann S. Burke, Gloria Oliveras, Perenlei Enkhbaatar, Lillian D. Traber, Joseph B. Zwischenberger, Marc G. Jeschke, Frank C. Schmalstieg, David N. Herndon, Daniel L. Traber, Hal K. Hawkins

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


An ovine model of smoke inhalation and burn (S+ B) injury models the pathophysiology of these injuries in humans. This study examines the degree of airway obstruction, associated histopathology, and bronchial gland cell expression of cytokines during the first 24 hours after S+ B injury in sheep. Changes in the mean degree of obstruction were limited to the bronchial airways, showing significant increases in obstruction with time, P< .05. At 4 hours after injury, the obstructive material was predominantly mucus, with neutrophils clustered around and within gland acini. At 8 to 24 hours, bronchial obstruction was characterized by increased inflammatory cell accumulation. Immunohistochemical results showed that gland cells constitutively express and secrete interleukin (IL)-1β, and that after injury there is an increase in the percentage of gland cells staining for IL-1α, IL-8, and tumor necrosis factor (TNF)-α, P < .05.

Original languageEnglish (US)
Pages (from-to)819-837
Number of pages19
JournalExperimental Lung Research
Issue number9-10
StatePublished - Nov 2005


  • Airway obstruction
  • Cytokine
  • Inflammation
  • Mucous glands
  • Mucus
  • Neutrophils

ASJC Scopus subject areas

  • Molecular Biology
  • Pulmonary and Respiratory Medicine
  • Clinical Biochemistry


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