RGD Reference Report - Multiple Blood Pressure loci on rat Chromosome 13 attenuate the development of hypertension in the Dahl S Hypertensive rat. - Rat Genome Database

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Multiple Blood Pressure loci on rat Chromosome 13 attenuate the development of hypertension in the Dahl S Hypertensive rat.

Authors: Moreno, C  Kaldunski, ML  Wang, T  Roman, RJ  Greene, AS  Lazar, J  Jacob, HJ  Cowley Jr, AW 
Citation: Moreno C, etal., Physiol Genomics. 2007 Jun 12;.
RGD ID: 1625678
Pubmed: PMID:17566075   (View Abstract at PubMed)
DOI: DOI:10.1152/physiolgenomics.00280.2006   (Journal Full-text)

Previous studies have indicated that substitution of chromosome 13 of the salt-resistant Brown Norway BN/SsNHsdMcwi (BN) rat into the genomic background of the Dahl salt-sensitive rat SS/JrHsdMcwi (SS) attenuates the development of salt-sensitive hypertension and renal damage. In order to identify the regions within chromosome 13 that attenuate the development of hypertension during a high salt diet in the SS rat, we phenotyped a series of overlapping congenic lines covering chromosome 13, generated from an intercross between the consomic SS-13(BN) and the SS rat. Blood pressure was determined in chronically catheterized rats after 2 weeks of high salt diet (8% NaCl) together with microalbuminuria as an index of renal damage. Four discrete regions were identified, ranging in size from 4.5 to 16 Mbp, each of which independently provided significant protection from hypertension during high salt diet, reducing blood pressure by 22 to 32 mmHg. Protection was more robust in female than in male rats in some of the congenic strains, suggesting a sex interaction with some of the genes determining blood pressure during high salt diet. Among the 23 congenic strains, several regions overlapped. When three of the "protective" regions were combined onto one broad congenic strain, no summation effect was seen, obtaining the same decrease in blood pressure as with each one independently. We conclude from these studies that there are four regions within chromosome 13 containing genes that interact epistatically and influence arterial pressure. Key words: Hypertension, QTL, genetic epistasis, consomic, congenic.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
Hypotension  IAGP 1625678; 1625678; 1625678; 16256788% NaCl dietRGD 

Phenotype Annotations    Click to see Annotation Detail View

Mammalian Phenotype

TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
decreased mean systemic arterial blood pressure  IDA 1625678; 1625678; 1625678; 16256788% NaCl dietRGD 
decreased mean systemic arterial blood pressure sexual_dimorphismIAGPcontrolled sodium content diet1625678in female and compared to SS/JrHsdMcwiRGD 
decreased mean systemic arterial blood pressure inducedIAGPcontrolled sodium content diet1625678; 1625678; 1625678compared to SS/JrHsdMcwiRGD 
decreased mean systemic arterial blood pressure inducedIAGPcontrolled sodium content diet1625678; 1625678as compared to SS/JrHsdMcwiRGD 
decreased mean systemic arterial blood pressure sexual_dimorphismIAGPcontrolled sodium content diet1625678; 1625678; 1625678; 1625678; 1625678in female and compared to SS/JrHsdMcwiRGD 
decreased mean systemic arterial blood pressure sexual_dimorphismIAGPcontrolled sodium content diet1625678compared to female SS/JrHsdMcwi on 8% NaCl dietRGD 
decreased mean systemic arterial blood pressure inducedIAGPcontrolled sodium content diet1625678in male and compared to SS/JrHsdMcwiRGD 
decreased mean systemic arterial blood pressure sexual_dimorphismIAGPcontrolled sodium content diet1625678compared to female SS/JrHsdMcwiRGD 
increased mean systemic arterial blood pressure sexual_dimorphismIAGPcontrolled sodium content diet1625678as compared to female on 8% NaCl dietRGD 
increased mean systemic arterial blood pressure sexual_dimorphismIAGPcontrolled sodium content diet1625678compared to femaleRGD 
increased mean systemic arterial blood pressure sexual_dimorphismIAGPcontrolled sodium content diet1625678; 1625678; 1625678; 1625678; 1625678in maleRGD 
increased mean systemic arterial blood pressure sexual_dimorphism IAGPcontrolled sodium content diet1625678compared to femaleRGD 
increased urine microalbumin level sexual_dimorphismIAGPcontrolled sodium content diet1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678in maleRGD 
increased urine microalbumin level inducedIAGPcontrolled sodium content diet1625678as compared to SS/JrHsdMcwiRGD 
increased urine microalbumin level sexual_dimorphism IAGPcontrolled sodium content diet1625678; 1625678compared to femaleRGD 
increased urine microalbumin level sexual_dimorphismIAGPcontrolled sodium content diet1625678 RGD 
salt-sensitive hypertension inducedIAGPcontrolled sodium content diet1625678; 1625678; 1625678; 1625678; 1625678; 1625678; 1625678 RGD 

Objects referenced in this article
QTL BpQTLcluster11 Blood pressure QTL cluster 11 Rattus norvegicus
Strain SS-Chr 13BN/Mcwi null Rattus norvegicus

Additional Information