Fish oil feeding modulates leukotriene production in murine lupus nephritis

Robert F. Spurney, Thomas M. Coffman, Phillip Ruiz, Christien R. Albrightson, David S. Pisetsky

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Diets enriched with fish oil (FO) ameliorate kidney disease in the MRL-1pr/1pr 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-1pr/1pr 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-1pr/1pr mice. We therefore investigated the effects of FO feeding on production of 5-LO metabolites in 20 week old MRL-1pr/1pr 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.

Original languageEnglish (US)
Pages (from-to)331-348
Number of pages18
Issue number5
StatePublished - Nov 1994


  • eicosanoid
  • eicosapentaenoic acid
  • fish oil
  • Leukotriene
  • lupus nephritis

ASJC Scopus subject areas

  • Biochemistry
  • Endocrinology


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