TY - JOUR
T1 - Effect of Sodium Chloride, Enalapril, and Losartan on the Development of Polycystic Kidney Disease in Han:SPRD Rats
AU - Keith, Douglas S.
AU - Torres, Vicente E.
AU - Johnson, Christopher M.
AU - Holley, Keith E.
N1 - Funding Information:
From the Departments of Pediatrics and Laboratory Medicine and Pathology, the Division of Nephrology and Infernal Medicine, and the Section of Hematology Research. Mayo Clinic and Mayo Foundation, Rochester, MN. Received December 30. 1993; accepted in revisedform May 11, 1994. Supported by the National Institutes of Health Grallt No. DK44863. Presented in part at the 25th Annual Meeting of the American Society of Nephrology, Baltimore, MD, November 1992. Address reprint requests to Vicente E. Torres, MD, Mayo Clinic and Mayo Foundation, 200 First St SW, Rochester. MN 55905. © 1994 by the National Kidney Foundation, Inc. 0272-6386/94/2403-0012$3.00/0
PY - 1994
Y1 - 1994
N2 - We found that the administration of an angiotensin I-converting enzyme inhibitor and sodium chloride loading lessen the development of renal cystic disease induced by 2-amino-4-5-diphenylthiazole in rats. To determine whether similar effects could be observed in an autosomal dominant model of polycystic kidney disease, heterozygous cystic (Cy/+) and homozygous normal (+/+) Han:SPRD rats were divided into experimental groups at 3 weeks of age. The first study included four groups receiving enalapril (50 mg/L), losartan (400 mg/L), hydralazine (80 mg/L), or no drug in their drinking water. The second study included four groups fed a sodium-deficient diet or the same diet supplemented with 0.25%, 0.6%, or 3.3% sodium chloride. The Cy/+ rats receiving enalapril had lower kidney weights and histologic scores than those in the control group, and lower kidney weights, plasma creatinines, and histologic scores than those in the hydralazine group. The Cy/+ rats receiving losartan had lower plasma creatinines and histologic scores than those in the control and hydralazine treatment groups. A sodium-deficient diet markedly blunted the growth of the animals and the development of cystic disease. Increases in the sodium content of the diet in the other three groups were accompanied by higher relative kidney weights and histology scores, while the levels of plasma creatinine were not significantly different. Regression of the cystic disease was observed between 3 and 4 months of age. These results indicate that the development of autosomal dominant polycystic kidney disease in the rat can be modulated by pharmacologic and nutritional factors. Whereas the administration of an AT1 angiotensin II antagonist or an angiotensin I-converting enzyme inhibitor had a protective effect, increasing the sodium chloride contents of the diet worsened the severity of the renal cystic disease in this animal model.
AB - We found that the administration of an angiotensin I-converting enzyme inhibitor and sodium chloride loading lessen the development of renal cystic disease induced by 2-amino-4-5-diphenylthiazole in rats. To determine whether similar effects could be observed in an autosomal dominant model of polycystic kidney disease, heterozygous cystic (Cy/+) and homozygous normal (+/+) Han:SPRD rats were divided into experimental groups at 3 weeks of age. The first study included four groups receiving enalapril (50 mg/L), losartan (400 mg/L), hydralazine (80 mg/L), or no drug in their drinking water. The second study included four groups fed a sodium-deficient diet or the same diet supplemented with 0.25%, 0.6%, or 3.3% sodium chloride. The Cy/+ rats receiving enalapril had lower kidney weights and histologic scores than those in the control group, and lower kidney weights, plasma creatinines, and histologic scores than those in the hydralazine group. The Cy/+ rats receiving losartan had lower plasma creatinines and histologic scores than those in the control and hydralazine treatment groups. A sodium-deficient diet markedly blunted the growth of the animals and the development of cystic disease. Increases in the sodium content of the diet in the other three groups were accompanied by higher relative kidney weights and histology scores, while the levels of plasma creatinine were not significantly different. Regression of the cystic disease was observed between 3 and 4 months of age. These results indicate that the development of autosomal dominant polycystic kidney disease in the rat can be modulated by pharmacologic and nutritional factors. Whereas the administration of an AT1 angiotensin II antagonist or an angiotensin I-converting enzyme inhibitor had a protective effect, increasing the sodium chloride contents of the diet worsened the severity of the renal cystic disease in this animal model.
KW - Han:SPRD rat
KW - Polycystic kidney disease
KW - dietary sodium
KW - enalapril
KW - losartan
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U2 - 10.1016/S0272-6386(12)80907-3
DO - 10.1016/S0272-6386(12)80907-3
M3 - Article
C2 - 8079975
AN - SCOPUS:0027935786
SN - 0272-6386
VL - 24
SP - 491
EP - 498
JO - American Journal of Kidney Diseases
JF - American Journal of Kidney Diseases
IS - 3
ER -