Fish oil feeding modulates leukotriene production in murine lupus nephritis.

Published

Journal Article

Diets enriched with fish oil (FO) ameliorate kidney disease in the MRL-lpr/lpr murine model of lupus nephritis. Although the mechanisms of this effect are not known, FO is rich in the polyunsaturated fatty acid eicosapentaenoic acid (EPA) which may have profound effects on eicosanoid metabolism. In MRL-lpr/lpr mice, FO feeding reduces renal production of cyclooxygenase metabolites. However, EPA may also affect the metabolism of arachidonate by the 5-lipoxygenase (5-LO) pathway and enhanced production of 5-LO metabolites has been implicated in the pathogenesis of kidney disease in MRL-lpr/lpr mice. We therefore investigated the effects of FO feeding on production of 5-LO metabolites in 20 week old MRL-lpr/lpr mice. After 8 weeks of dietary supplementation with FO, both renal hemodynamic function and glomerular histology were improved compared to safflower oil (SO) controls. Amelioration of kidney disease was associated with alterations in the pattern of leukotriene production by macrophages and kidneys from FO fed mice. There was a significant decrease in the production of leukotriene B4 (LTB4) and tetraene peptidoleukotrienes by peritoneal macrophages isolated from mice given FO compared to control animals. Similarly, dietary supplementation with FO decreased renal production of LTB4. Reduced production of tetraene leukotrienes was accompanied by a modest increase in the production of pentaene leukotrienes by macrophages from FO fed mice. We speculate that this modulation of leukotriene production by FO feeding may have beneficial effects on renal disease in autoimmune nephritis.

Full Text

Duke Authors

Cited Authors

  • Spurney, RF; Ruiz, P; Albrightson, CR; Pisetsky, DS; Coffman, TM

Published Date

  • November 1994

Published In

Volume / Issue

  • 48 / 5

Start / End Page

  • 331 - 348

PubMed ID

  • 7855311

Pubmed Central ID

  • 7855311

International Standard Serial Number (ISSN)

  • 0090-6980

Digital Object Identifier (DOI)

  • 10.1016/0090-6980(94)90032-9

Language

  • eng

Conference Location

  • United States