Daily handling stress reduces resistance of carp to Trypanoplasma borreli: In vitro modulatory effects of cortisol on leukocyte function and apoptosis

Jeroen Saeij, Lidy B M Verburg-Van Kemenade, Willem B. Van Muiswinkel, Geert F. Wiegertjes

Research output: Contribution to journalArticle

79 Citations (Scopus)

Abstract

Carp subjected to daily handling stress were much more susceptible to Trypanoplasma borreli infection than control fish. In a search for the cellular mechanisms involved, it was observed that cortisol suppressed T. borreli-induced expression of interleukin-1β, tumor necrosis factor-α, serum amyloid A and inducible nitric oxide synthase. An NF-κB-inhibitor could replicate cortisol-induced apoptosis of activated peripheral blood leukocytes. In contrast, although this NF-κB-inhibitor induced apoptosis of neutrophilic granulocytes, cortisol prevented apoptosis of these cells, suggesting the latter process to be NF-κB-independent. Carp leukocytes, upon induction of apoptosis, exhibit a number of sequential metabolic alterations. First, the mitochondrial transmembrane potential (ΔΨm) is disrupted and glutathione levels are depleted, followed by exposure of phosphatidylserine on the outer cell membrane. In vitro, cortisol could inhibit NO production induced by low concentrations of lipopolysaccharide (LPS), but remarkably, enhanced NO production induced by high concentrations of LPS. However, no differences in NO production were observed in stressed versus non-stressed infected carp.

Original languageEnglish (US)
Pages (from-to)233-245
Number of pages13
JournalDevelopmental and Comparative Immunology
Volume27
Issue number3
DOIs
StatePublished - Mar 1 2003
Externally publishedYes

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Carps
Hydrocortisone
Leukocytes
Apoptosis
Lipopolysaccharides
Serum Amyloid A Protein
Phosphatidylserines
Nitric Oxide Synthase Type II
Infection Control
Interleukin-1
Granulocytes
Membrane Potentials
Glutathione
Fishes
Tumor Necrosis Factor-alpha
Cell Membrane
In Vitro Techniques

Keywords

  • Apoptosis
  • Carp
  • Cortisol
  • Disease resistance
  • Fish
  • Glutathione depletion
  • Kinetoplastida
  • Stress

ASJC Scopus subject areas

  • Developmental Biology
  • Immunology

Cite this

Daily handling stress reduces resistance of carp to Trypanoplasma borreli : In vitro modulatory effects of cortisol on leukocyte function and apoptosis. / Saeij, Jeroen; Verburg-Van Kemenade, Lidy B M; Van Muiswinkel, Willem B.; Wiegertjes, Geert F.

In: Developmental and Comparative Immunology, Vol. 27, No. 3, 01.03.2003, p. 233-245.

Research output: Contribution to journalArticle

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