Open AccessNephrectomy and peritoneal dialysis eliminates circulating renin and controls uraemia in the rat
Author(s) -
Tore Pedersen,
Arne Høj Nielsen,
Svend Strandgaard,
Olaf B. Paulson
Publication year - 2002
Publication title -
jraas. journal of the renin-angiotensin-aldosterone system/journal of the renin-angiotensin-aldosterone system
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.457
H-Index - 46
eISSN - 1752-8976
pISSN - 1470-3203
DOI - 10.3317/jraas.2002.015
Subject(s) - peritoneal dialysis , medicine , catheter , renin–angiotensin system , dialysis , plasma renin activity , bilateral nephrectomy , endocrinology , nephrectomy , urea , urology , creatinine , kidney , surgery , chemistry , biochemistry , blood pressure
Objective The aim of the present study was to develop a rat model for in vivo studies of the local effects of the renin-angiotensin system (RAS) following elimination of circulating renin. Methods Sprague Dawley rats were bilaterally nephrectomised and had a peritoneal dialysis catheter implanted. The rats were maintained on dialysis continuously for 48 hours, using Dianeal PD4 3.86% glucose dialysis solution. The peritoneal catheter and an automated system for dialysate exchange were made in our laboratory. A sham nephrectomised control group of rats was also dialysed. Results Nephrectomised and sham-operated rats remained active and in good general condition during peritoneal dialysis. At 48 hours, in nephrectomised, dialysed rats, peritoneal urea clearance was 4.14±0.52 ml/hour, plasma urea was 40.0±7.7 mmol/L, plasma creatinine was 0.423±0.070 mmol/L and plasma renin was below the limit of detection. Conclusions In conclusion, it was possible to sustain bilaterally-nephrectomised rats on continuous peritoneal dialysis for 48 hours, pending elimination of renin from the circulation. The nephrectomised dialysed rat model should be useful for investigation of the physiological effects of the circulating versus the local RAS.