Heritable influence of DBH on adrenergic and renal function: twin and disease studies.
PLoS One
; 8(12): e82956, 2013.
Article
in En
| MEDLINE
| ID: mdl-24391727
ABSTRACT
BACKGROUND:
Elevated sympathetic activity is associated with kidney dysfunction. Here we used twin pairs to probe heritability of GFR and its genetic covariance with other traits.METHODS:
We evaluated renal and adrenergic phenotypes in twins. GFR was estimated by CKD-EPI algorithm. Heritability and genetic covariance of eGFR and associated risk traits were estimated by variance-components. Meta-analysis probed reproducibility of DBH genetic effects. Effect of DBH genetic variation on renal disease was tested in the NIDDK-AASK cohort.RESULTS:
Norepinephrine secretion rose across eGFR tertiles while eGFR fell (p<0.0001). eGFR was heritable, at h(2)â=â67.3±4.7% (pâ=â3.0E-18), as were secretion of norepinephrine (h(2)â=â66.5±5.0%, pâ=â3.2E-16) and dopamine (h(2)â=â56.5±5.6%, pâ=â1.8E-13), and eGFR displayed genetic co-determination (covariance) with norepinephrine (ρGâ=â-0.557±0.088, pâ=â1.11E-08) as well as dopamine (ρGâ=â-0.223±0.101, pâ=â2.3E-02). Since dopamine ß-hydroxylase (DBH) catalyzes conversion of dopamine to norepinephrine, we studied functional variation at DBH; DBH promoter haplotypes predicted transcriptional activity (p<0.001), plasma DBH (p<0.0001) and norepinephrine (pâ=â0.0297) secretion; transcriptional activity was inversely (p<0.0001) associated with basal eGFR. Meta-analysis validated DBH haplotype effects on eGFR across 3 samples. In NIDDK-AASK, we established a role for DBH promoter variation in long-term renal decline rate (GFR slope, pâ=â0.003).CONCLUSIONS:
The heritable GFR trait shares genetic determination with catecholamines, suggesting new pathophysiologic, diagnostic and therapeutic approaches towards disorders of GFR as well as CKD. Adrenergic activity may play a role in progressive renal decline, and genetic variation at DBH may assist in profiling subjects for rational preventive treatment.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Dopamine beta-Hydroxylase
/
Renal Insufficiency, Chronic
/
Glomerular Filtration Rate
Type of study:
Etiology_studies
/
Incidence_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
/
Systematic_reviews
Limits:
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
PLoS One
Journal subject:
CIENCIA
/
MEDICINA
Year:
2013
Document type:
Article
Affiliation country:
United States