Increased alveolar macrophage chemiluminescence and airspace cell superoxide production in active pulmonary sarcoidosis

William Calhoun, S. M. Salisbury, L. W. Chosy, L. W. Busse

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Alveolar macrophages (AMs) and lymphocytes are activated in pulmonary sarcoidosis. Mediators from these cells are potentially important in the pathophysiology and pathogenesis of this disease. To determine whether the enhanced release of reactive oxygen species (ROS) participates in inflammatory events in sarcoidosis, and to explore the relationship between ROS release and clinical parameters, we studied ROS metabolism of AMs and other airspace cells by luminol-enhanced chemiluminescence and by direct biochemical measurement of superoxide anion production. Ten of 17 patients with sarcoidosis were prospectively found to have active disease by objective radiographic, functional, and laboratory criteria. In these subjects, ROS metabolism by AMs was significantly enhanced compared either with healthy control subjects or with patients with inactive sarcoidosis. Abnormalities in ROS metabolism were not seen in peripheral blood monocytes, suggesting that this increased metabolic activity is compartmentalized to the lung. Enhanced ROS metabolism by AMs was associated with recent adverse chest radiographic changes, recent decline in forced vital capacity, and more advanved radiographic type. These data support the hypothesis that ROS generated by airspace cells can promote parenchymal inflammation in sarcoidosis, are associated with physiologic and radiologic changes, and may thereby contribute to the pathogenesis of sarcoidosis.

Original languageEnglish (US)
Pages (from-to)147-156
Number of pages10
JournalJournal of Laboratory and Clinical Medicine
Volume112
Issue number2
StatePublished - 1988
Externally publishedYes

Fingerprint

Pulmonary Sarcoidosis
Chemiluminescence
Alveolar Macrophages
Luminescence
Superoxides
Reactive Oxygen Species
Sarcoidosis
Metabolism
Luminol
Lymphocytes
Vital Capacity
Monocytes
Healthy Volunteers
Blood
Thorax
Inflammation
Lung

ASJC Scopus subject areas

  • Medicine(all)
  • Pathology and Forensic Medicine

Cite this

Increased alveolar macrophage chemiluminescence and airspace cell superoxide production in active pulmonary sarcoidosis. / Calhoun, William; Salisbury, S. M.; Chosy, L. W.; Busse, L. W.

In: Journal of Laboratory and Clinical Medicine, Vol. 112, No. 2, 1988, p. 147-156.

Research output: Contribution to journalArticle

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AB - Alveolar macrophages (AMs) and lymphocytes are activated in pulmonary sarcoidosis. Mediators from these cells are potentially important in the pathophysiology and pathogenesis of this disease. To determine whether the enhanced release of reactive oxygen species (ROS) participates in inflammatory events in sarcoidosis, and to explore the relationship between ROS release and clinical parameters, we studied ROS metabolism of AMs and other airspace cells by luminol-enhanced chemiluminescence and by direct biochemical measurement of superoxide anion production. Ten of 17 patients with sarcoidosis were prospectively found to have active disease by objective radiographic, functional, and laboratory criteria. In these subjects, ROS metabolism by AMs was significantly enhanced compared either with healthy control subjects or with patients with inactive sarcoidosis. Abnormalities in ROS metabolism were not seen in peripheral blood monocytes, suggesting that this increased metabolic activity is compartmentalized to the lung. Enhanced ROS metabolism by AMs was associated with recent adverse chest radiographic changes, recent decline in forced vital capacity, and more advanved radiographic type. These data support the hypothesis that ROS generated by airspace cells can promote parenchymal inflammation in sarcoidosis, are associated with physiologic and radiologic changes, and may thereby contribute to the pathogenesis of sarcoidosis.

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