Substitution of chromosome 1 ameliorates L-NAME hypertension and renal disease in the fawn-hooded hypertensive rat

David L. Mattson, Mary Pat Kunert, Richard J. Roman, Howard J. Jacob, Allen W. Cowley

Research output: Contribution to journalArticle

Abstract

Linkage analysis studies previously identified genetic loci associated with proteinuria and hypertension on chromosome 1 of fawn-hooded hypertensive (FHH) rats. The present studies were performed on conscious male and female rats to evaluate the influence of transfer of chromosome 1 from the Brown Norway (BN) rat to the FHH genetic background (FHH-1BN). Rats were maintained for 2 wk on 8.0% NaCl chow with NG-nitro-L-arginine methyl ester (L-NAME) in the drinking water (12.5 mg/l) to induce hypertension and accelerate the onset of renal disease. Mean arterial blood pressure (MAP) was significantly higher in the male FHH (188 ± 3 mmHg, n = 13) compared with the BN (121 ± 3 mmHg, n = 8); MAP in the FHH-1BN was midway between the two parental strains (167 ± 5 mmHg, n = 9). Urinary protein and albumin excretion rates in the male FHH-1BN (Uprot = 189 ± 36 mg/day, Ualb = 69 ± 16 mg/day, n = 10) were also midway between levels observed in the FHH (Uprot = 485 ± 54 mg/day; Ualb = 206 ± 25 mg/day, n = 13) and the BN (Uprot = 32 ± 5 mg/day, Ualb = 5 ± 1 mg/day, n = 8). Creatinine clearance was elevated, and the degree of glomerular damage was significantly reduced in the FHH-1BN compared with the FHH. Qualitatively similar results were obtained from female FHH, FHH-1 BN, and BN rats. The present results indicate that genes contributing to L-NAME-induced hypertension and renal disease are found on chromosome 1 of the FHH rat.

Original languageEnglish (US)
Pages (from-to)F1015-F1022
JournalAmerican Journal of Physiology - Renal Physiology
Volume288
Issue number5 57-5
DOIs
StatePublished - May 1 2005
Externally publishedYes

Fingerprint

Renal Hypertension
Chromosomes, Human, Pair 1
NG-Nitroarginine Methyl Ester
Arterial Pressure
Norway
Hypertension
Genetic Loci
Proteinuria
Drinking Water
Albumins
Creatinine
Kidney
Genes
Proteins

Keywords

  • Consomic
  • Kidney disease

ASJC Scopus subject areas

  • Physiology
  • Urology

Cite this

Substitution of chromosome 1 ameliorates L-NAME hypertension and renal disease in the fawn-hooded hypertensive rat. / Mattson, David L.; Kunert, Mary Pat; Roman, Richard J.; Jacob, Howard J.; Cowley, Allen W.

In: American Journal of Physiology - Renal Physiology, Vol. 288, No. 5 57-5, 01.05.2005, p. F1015-F1022.

Research output: Contribution to journalArticle

Mattson, David L. ; Kunert, Mary Pat ; Roman, Richard J. ; Jacob, Howard J. ; Cowley, Allen W. / Substitution of chromosome 1 ameliorates L-NAME hypertension and renal disease in the fawn-hooded hypertensive rat. In: American Journal of Physiology - Renal Physiology. 2005 ; Vol. 288, No. 5 57-5. pp. F1015-F1022.
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abstract = "Linkage analysis studies previously identified genetic loci associated with proteinuria and hypertension on chromosome 1 of fawn-hooded hypertensive (FHH) rats. The present studies were performed on conscious male and female rats to evaluate the influence of transfer of chromosome 1 from the Brown Norway (BN) rat to the FHH genetic background (FHH-1BN). Rats were maintained for 2 wk on 8.0{\%} NaCl chow with NG-nitro-L-arginine methyl ester (L-NAME) in the drinking water (12.5 mg/l) to induce hypertension and accelerate the onset of renal disease. Mean arterial blood pressure (MAP) was significantly higher in the male FHH (188 ± 3 mmHg, n = 13) compared with the BN (121 ± 3 mmHg, n = 8); MAP in the FHH-1BN was midway between the two parental strains (167 ± 5 mmHg, n = 9). Urinary protein and albumin excretion rates in the male FHH-1BN (Uprot = 189 ± 36 mg/day, Ualb = 69 ± 16 mg/day, n = 10) were also midway between levels observed in the FHH (Uprot = 485 ± 54 mg/day; Ualb = 206 ± 25 mg/day, n = 13) and the BN (Uprot = 32 ± 5 mg/day, Ualb = 5 ± 1 mg/day, n = 8). Creatinine clearance was elevated, and the degree of glomerular damage was significantly reduced in the FHH-1BN compared with the FHH. Qualitatively similar results were obtained from female FHH, FHH-1 BN, and BN rats. The present results indicate that genes contributing to L-NAME-induced hypertension and renal disease are found on chromosome 1 of the FHH rat.",
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