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Immunotoxicity of In Vitro Vanadium Exposures: Effects on Interleukin-1, Tumor Necrosis Factor-A, and Prostaglandin E2 Production by WEHI-3 Macrophages



Details

  • Personal Author:
  • Description:
    Treatment of cultured mouse macrophages with either of two different vanadium compounds was shown to affect the production/release of two major immunoregulatory cytokines. The pentavalent vanadium compound ammonium metavanadate was shown previously to disrupt cell-mediated immunity at the earliest stages of an in vivo anti-Listerial response, in that mice treated with vanadium displayed decreased accessory cell recruitment and numbers of activated macrophages at infection sites. To determine whether these effects were due to vanadium-induced alterations in the production of biologically-active mediators, mouse macrophage-like WEHI-3 cells were treated in vitro with ammonium metavanadate or vanadium pentoxide prior to stimulation with lipopolysaccharide endotoxin (LPS). After stimulation, monokine (tumor necrosis factor-a and interleukin-1) and prostaglandin E2 (PGE2) activities were assessed. Both vanadium compounds decreased recovered monokine activities; measured TNFa concentrations were also reduced. Spontaneous release of the IL-1/TNF-regulating prostanoid PGE2 was significantly increased by the highest concentration of vanadate tested, although LPS-stimulated PGE2 production was unaffected by either compound. These results indicate that, in vitro, pentavalent vanadium can interfere with immunoregulatory mediators critical for maintaining host immunocompetence. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0192-0561
  • Document Type:
  • Funding:
  • Genre:
  • Place as Subject:
  • CIO:
  • Topic:
  • Location:
  • Pages in Document:
    437-446
  • Volume:
    15
  • Issue:
    3
  • NIOSHTIC Number:
    nn:20060106
  • Citation:
    Int J Immunopharmacol 1993 Apr; 15(3):437-446
  • Contact Point Address:
    Mitchell D. Cohen, Department of Environmental Medicine, New York University Medical Center, Long Meadow Road, Tuxedo, NY 10987, U.S.A.
  • CAS Registry Number:
  • Federal Fiscal Year:
    1993
  • Performing Organization:
    Mount Sinai School of Medicine, New York
  • Peer Reviewed:
    True
  • Start Date:
    19920701
  • Source Full Name:
    International Journal of Immunopharmacology
  • End Date:
    19970630
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:5ec5613e297ccb241a777022a8cc796ec405cca4fba3dd33807d309a32ef886bfed2198b632e55839de71db7be7006bede463b0c45ccf6101c815f0ab89649ee
  • Download URL:
  • File Type:
    Filetype[PDF - 807.76 KB ]
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