Human alveolar macrophages inhibit immunoglobulin production in response to direct B cell mitogen.

D. S. Wilkes, W. C. Yarbrough, J. C. Weissler

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

B lymphocytes are crucial participants in pulmonary immune defense. However, excess local antibody production is associated with accelerated lung destruction in several types of lung disease. The purpose of the current study was to study the potential role of alveolar macrophages (AM) in the local regulation of immunoglobulin (Ig) production in the lung in response to a direct B cell mitogen, Staphylococcus aureus Cowan strain (SAC). AM, when added to peripheral blood mononuclear cells, caused a dose-dependent inhibition of IgG and IgM, while not affecting IgA production in response to SAC. The mechanism of the AM-induced inhibition included both membrane-bound and soluble signals. The inhibition was not abrogated by indocin and catalase, or reversed by blocking antibodies to transforming growth factor-beta or interferon-gamma. Mononuclear cells isolated from human lung parenchyma displayed a reduced response to SAC compared with blood cells. However, depletion of macrophages from the parenchymal cells was associated with a restoration of IgG production in response to SAC. The results demonstrate that AM inhibit B cell responses to direct B cell mitogen and suggest that the effect of AM is selective for IgM and IgG.

Original languageEnglish (US)
Pages (from-to)141-147
Number of pages7
JournalAmerican Journal of Respiratory Cell and Molecular Biology
Volume9
Issue number2
StatePublished - Aug 1993
Externally publishedYes

Fingerprint

Alveolar Macrophages
Mitogens
Immunoglobulins
B-Lymphocytes
Cells
Staphylococcus aureus
Lung
Immunoglobulin G
Immunoglobulin M
Blood Cells
Blood
Pulmonary diseases
Blocking Antibodies
Lymphocytes
Macrophages
Interferon-beta
Indomethacin
Transforming Growth Factor beta
Catalase
Immunoglobulin A

ASJC Scopus subject areas

  • Cell Biology
  • Molecular Biology
  • Pulmonary and Respiratory Medicine

Cite this

Human alveolar macrophages inhibit immunoglobulin production in response to direct B cell mitogen. / Wilkes, D. S.; Yarbrough, W. C.; Weissler, J. C.

In: American Journal of Respiratory Cell and Molecular Biology, Vol. 9, No. 2, 08.1993, p. 141-147.

Research output: Contribution to journalArticle

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