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Transplantation. 1990 Mar;49(3):523-7.

The effects of dietary supplementation with fish oil on renal function in cyclosporine-treated renal transplant recipients.

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Department of Internal Medicine, University Hospital Groningen, The Netherlands.


The effect of a daily supplementation of 6 g fish oil (30% C20:5 omega-3 (EPA) and 20% C22:6 omega-3 for three months on renal function variables was investigated in a placebo-controlled (6 g corn oil, 50% C18:2 omega-6) prospective, randomized, double-blind study in stable cyclosporine-treated renal transplant recipients, at least nine months after grafting. Ten patients ingested placebo capsules and eleven patients fish oil. When measuring glomerular filtration rate and effective renal plasma flow (ERPF) before (baseline [BL]) and after 3 months of oil ingestion nothing changed in the placebo-treated group: GFR-BL = 64.5 GFR-3 months = 60 ml/min/1.73m2 (NS; median, Wilcoxon test) ERPF BL = 229.5 and ERPF-3 months = 242.5 ml/min/1.73m2 (NS). In the fish oil-treated group GFR rose by 20.3% from GFR-BL = 56 to GFR-3 months = 68 ml/min/1.73m2 and ERPF by 16.4% from ERPF-BL 218 to ERPF-3 months = 245 ml/min/1.73m2, (P less than 0.01). In the placebo-treated group mean arterial pressure and calculated total renal vascular resistance (TRVR) did not change: MAP-BL = 106 mmHg and MAP-3 months = 109 mmHg, TRVR being 20856 dyne.sec/cm5 and 19862 dyne/sec/cm5, respectively (NS). In the fish oil-treated group MAP and TRVR fell by 8.6% and 21.1%, respectively: MAP-BL = 106 mmHg and MAP-3 months = 98 mmHg (P less than 0.01), TRVR-BL = 21952 dyne/sec/cm5 and TRVR-3 months = 17087 dyne/sec/cm5 (P less than 0.01). According to these results fish oil supplementation has considerable effects on renal function and blood pressure in stable CsA-treated renal transplant recipients.

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