title: Prevention of experimental cyclosporine nephrotoxicity by dietary supplementation with LSL 90202, a lysine salt of eicosapentaenoic acid. Role of thromboxane and prostacyclin in renal tissue.
abstract: Cyclosporine (CsA) nephrotoxicity is partially mediated by renal vasoconstriction due to an imbalance between vasodilator and vasoconstrictor eicosanoids. LSL 90202 is a purified lysine salt of eicosapentaenoic acid which is a known inhibitor of renal eicosanoid synthesis. The aim of the present work was to determine if chronic dietary supplementation with LSL 90202 prevented CsA nephrotoxicity and to establish the role of thromboxane and prostacyclin in renal tissue. Thirty-three male Sprague-Dawley rats were divided into 4 groups: group 1, CsA in olive oil (n = 10); group 2, isovolumetric olive oil (n = 7); group 3, CsA in olive oil plus LSL 90202 (n = 8); group 4, isovolumetric olive oil plus LSL 90202 (n = 8). CsA and LSL 90202 were given at 20 mg/kg/day. Weight and creatinine clearance (CrCl) were determined before and on days 14 and 30. On day 30 whole-blood CsA was determined and renal tissue processed for renal malondialdehyde, thromboxane B2 and 6-keto-PGF1 alpha measurement and for conventional histology. CrCl was severely reduced in the CsA in olive oil group compared to olive oil and LSL 90202 control groups. On day 30, CrCl in the CsA in olive oil plus LSL 90202 group showed a slight decrease, but the mean CrCl was significantly higher than in the CsA in olive oil group. Trough whole blood CsA levels were not significantly different in both groups given the drug. No morphological differences were found between groups.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Service of Nephrology, Hospital of Bellvitge, Hospitalet de Llobregat, Spain.
authors.forename: J
authors.initials: J
authors.lastname: Torras
authors.forename: J
authors.initials: J
authors.lastname: Valles
authors.forename: J
authors.initials: J
authors.lastname: Sanchez
authors.forename: I
authors.initials: I
authors.lastname: Sabate
authors.forename: D
authors.initials: D
authors.lastname: Seron
authors.forename: M
authors.initials: M
authors.lastname: Carrera
authors.forename: A M
authors.initials: AM
authors.lastname: Castelao
authors.forename: I
authors.initials: I
authors.lastname: Herrero
authors.forename: P
authors.initials: P
authors.lastname: Puig-Parellada
authors.forename: J
authors.initials: J
authors.lastname: Alsina
mesh_terms: D015121:6-Ketoprostaglandin F1 alpha / Q000378:metabolism; D000818:Animals; D003404:Creatinine / Q000097:blood; D016572:Cyclosporine / Q000037:antagonists & inhibitors* / Q000633:toxicity*; D015118:Eicosapentaenoic Acid / Q000494:pharmacology*; D011464:Epoprostenol / Q000096:biosynthesis; D007668:Kidney / Q000187:drug effects* / Q000378:metabolism; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley; D013928:Thromboxane A2 / Q000096:biosynthesis; D013929:Thromboxane B2 / Q000378:metabolism
chemical_list: D013929:Thromboxane B2; D013928:Thromboxane A2; D015121:6-Ketoprostaglandin F1 alpha; D016572:Cyclosporine; D015118:Eicosapentaenoic Acid; D003404:Creatinine; D011464:Epoprostenol