Elevation of rainbow trout Oncorhynchus mykiss macrophage respiratory burst activity with macrophage-derived supernatants

S. I. Jang, L. J. Hardie, C. J. Secombes

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

A variety of supernatants were prepared by stimulating rainbow trout Oncorhynchus mykiss head kidney macrophages with lipopolysaccharide (LPS), tumor necrosis factor a (TNF-α), or a leucocyte-derived macrophage-activating factor (I-MAF), individually and in combination. If generated using a 12-h stimulation period, such supernatants were found to elevate significantly the respiratory burst activity of target macrophages; that is, they contained a macrophage-derived MAF (m-MAF), but supernatants generated using a shorter incubation period showed no significant activity. Combinations of these treatments were particularly effective in generating m-MAF-containing supernatants. The elevation of respiratory burst activity by supernatants generated using combined treatments could be partially inhibited by prior treatment of the target macrophages with anti-TNF-α receptor 1 (TNFR1) monoclonal antibodies (mAbs). Similarly, treatment of macrophages with combinations of 1-MAF and m-MAF generated supernatants with potent m-MAF activity and this activity was partially inhibited by prior treatment of the target cells with anti-TNFR1 mAb. In addition, the presence of anti-transforming growth factor β1 (TGF-β1) serum while generating these latter supernatants resulted in significantly increased m-MAF activity. Such data suggest that fish leukocytes secrete a variety of potent macrophage-activating (TNF-α) and -deactivating (TGF-β) factors.

Original languageEnglish
Pages (from-to)943-947
Number of pages5
JournalJournal of Leukocyte Biology
Volume57
Issue number6
DOIs
Publication statusPublished - Jun 1995

Fingerprint

Respiratory Burst
Oncorhynchus mykiss
Macrophages
Tumor Necrosis Factor Receptors
Leukocytes
Macrophage-Activating Factors
Tumor Necrosis Factor-alpha
Head Kidney
Transforming Growth Factors
Lipopolysaccharides
Fishes
Monoclonal Antibodies

Keywords

  • Macrophages
  • MAF
  • Rainbow trout
  • Respiratory burst
  • TNF-α

ASJC Scopus subject areas

  • Immunology
  • Cell Biology

Cite this

Elevation of rainbow trout Oncorhynchus mykiss macrophage respiratory burst activity with macrophage-derived supernatants. / Jang, S. I.; Hardie, L. J.; Secombes, C. J.

In: Journal of Leukocyte Biology, Vol. 57, No. 6, 06.1995, p. 943-947.

Research output: Contribution to journalArticle

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