DESCRIPTION:

QTL Associated with Blood pressure. On Chromosome 10 with a LOD score= , p-value =1.00E-04. From a(n) backcross of

LABEL:

QTL-Bp76-Rat-Chr 10

SCORE TYPE:

Binary

DATE ADDED:

2015-06-10

DATE UPDATED:

2024-04-25

SPECIES:

AUTHORS:

Deng AY

TITLE:

Is the nitric oxide system involved in genetic hypertension in Dahl rats?

JOURNAL:

Kidney international None None, Vol 53, pp. 1501-11

ABSTRACT:

1. Kidney Int. 1998 Jun;53(6):1501-11. Is the nitric oxide system involved in genetic hypertension in Dahl rats? Deng AY(1). Author information: (1)Department of Physiology and Molecular Medicine, Medical College of Ohio, Toledo, USA. adeng@vortex.mco.edu To address this issue, a series of genetic tests were carried out. Linkage studies showed that the inducible nitric oxide synthase (Nos2) locus cosegregated with blood pressure in three F2 populations originated from crosses of Dahl salt-sensitive (S) rats with rats of various normotensive strains. However, the brain nitric oxidase synthase (Nos1) and endothelial nitric oxide synthase (Nos3) loci did not cosegregate with blood pressure in five F2 populations. Thus, only Nos2, but not Nos1 and Nos3, was considered as a candidate gene for being a quantitative trait locus (QTL) for blood pressure in the S rat. To further test this hypothesis, congenic strains were constructed by substituting regions on Chromosome 10 of the S rat with the homologous regions of the Milan normotensive (MNS) rat. Results showed that the chromosome region including Nos2 did not contain a blood pressure QTL. In consequence, Nos2 per se is not supported as a candidate QTL capable of causing a blood pressure difference between the S and MNS rats. Nevertheless, the nitric oxide system appears to be involved secondarily in the regulation of blood pressure in the S rat, as evidenced by physiological data. PMID: 9607182 [PubMed - indexed for MEDLINE] PUBMED: 9607182
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