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Chromogranin a polymorphisms are associated with hypertensive renal disease
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2008 (English)In: Journal of the American Society of Nephrology, ISSN 1046-6673, E-ISSN 1533-3450, Vol. 19, no 3, 600-614 p.Article in journal (Refereed) Published
Abstract [en]

Chromogranin A is released together with epinephrine and norepinephrine from catecholaminergic cells. Specific endopeptidases cleave chromogranin A into biologically active peptide fragments, including catestatin, which inhibits catecholamine release. Previous studies have suggested that a deficit in this sympathetic “braking” system might be an early event in the pathogenesis of human hypertension. Whether chromogranin A (CHGA) polymorphisms predict end-organ complications of hypertension, such as end-stage renal disease, is unknown. Among blacks, we studied common genetic variants spanning the CHGA locus in 2 independent case-control studies of hypertensive ESRD. Two haplotypes were significantly more frequent among subjects with hypertensive ESRD: 1) in the promoter (5′) region, G-462A→T-415C→C-89A, haplotype ATC (adjusted odds ratio = 2.65; P = 0.037), and 2) at the 3′-end, C11825T (3′-UTR, C+87T)→G12602C, haplotype TC (adjusted odds ratio = 2.73, P = 0.0196). Circulating levels of catestatin were lower among those with hypertensive ESRD than controls, an unexpected finding given that peptide levels are usually elevated in ESRD because of reduced renal elimination. We found that the 3′-UTR + 87T variant decreased reporter gene expression, providing a possible mechanistic explanation for diminished catestatin. In summary, common variants in chromogranin A associate with the risk of hypertensive ESRD in blacks.

Place, publisher, year, edition, pages
2008. Vol. 19, no 3, 600-614 p.
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Medical and Health Sciences
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URN: urn:nbn:se:uu:diva-152602DOI: 10.1681/ASN.2007070754ISI: 000253691200027OAI: oai:DiVA.org:uu-152602DiVA: diva2:413539
Available from: 2011-04-28 Created: 2011-04-28 Last updated: 2017-12-11Bibliographically approved

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Stridsberg, Mats

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