Maintenance of Granuloma Formation in Pulmonary Sarcoidosis by T Lymphocytes within the Lung

Gary W. Hunninghake, James E. Gadek, Roscoe C. Young, Oichi Kawanami, Victor J. Ferrans, Ronald Crystal

Research output: Contribution to journalArticle

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Abstract

Pulmonary granulomata of sarcoidosis are composed primarily of mononuclear phagocytic cells that are probably derived from blood monocytes. To evaluate the concept that recruitment of blood monocytes to the sarcoid lung is mediated by chemoattractants produced by immune effector cells within the lung, we obtained mononuclear cells from lung and blood of six patients with active pulmonary sarcoidosis, six normal subjects, and six patients with active idiopathic pulmonary fibrosis and studied their ability to secrete a chemotactic factor for monocytes. Lung T lymphocytes from all sarcoidosis patients, but not from normal subjects or patients with idiopathic pulmonary fibrosis, spontaneously secreted such a mediator. Lung T lymphocytes from patients with sarcoidosis secreted more monocyte chemotactic factor than did blood T lymphocytes from the same patients. The accumulation of monocytes in the lung in patients with pulmonary sarcoidosis may be mediated by local production of monocyte chemotactic factor by lung T lymphocytes. (N Engl J Med. 1980; 302: 594–8.) Pulmonary sarcoidosis is characterized by the presence of noncaseating granulomata within the interstitium of the alveolar structures.1 2 3 Histologically, these granulomata are composed of a circumscribed collection of cells including macrophages, epithelioid cells, and multinucleated giant cells, with fewer numbers of lymphocytes, polymorphonuclear cells, and fibroblasts in the periphery. In general, macrophages are considered to be the basic cellular element since they are likely to be precursors of both epithelioid cells and multinucleated giant cells.4 5 6 7 8 9 10 Although cytokinetic studies have not been carried out in human beings, extensive studies in animal models have demonstrated that the macrophages that participate in granuloma formation.

Original languageEnglish
Pages (from-to)594-598
Number of pages5
JournalNew England Journal of Medicine
Volume302
Issue number11
DOIs
Publication statusPublished - 13 Mar 1980
Externally publishedYes

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Pulmonary Sarcoidosis
Granuloma
Maintenance
Monocytes
T-Lymphocytes
Chemotactic Factors
Lung
Epithelioid Cells
Idiopathic Pulmonary Fibrosis
Macrophages
Sarcoidosis
Lymphocyte Count
Giant Cells
Phagocytes
Blood Cells
Animal Models
Fibroblasts

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Maintenance of Granuloma Formation in Pulmonary Sarcoidosis by T Lymphocytes within the Lung. / Hunninghake, Gary W.; Gadek, James E.; Young, Roscoe C.; Kawanami, Oichi; Ferrans, Victor J.; Crystal, Ronald.

In: New England Journal of Medicine, Vol. 302, No. 11, 13.03.1980, p. 594-598.

Research output: Contribution to journalArticle

Hunninghake, Gary W. ; Gadek, James E. ; Young, Roscoe C. ; Kawanami, Oichi ; Ferrans, Victor J. ; Crystal, Ronald. / Maintenance of Granuloma Formation in Pulmonary Sarcoidosis by T Lymphocytes within the Lung. In: New England Journal of Medicine. 1980 ; Vol. 302, No. 11. pp. 594-598.
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