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Genome-wide association studies identify genetic loci associated with albuminuria in diabetes.
Diabetes 65, 803-817 (2016)
Elevated concentrations of albumin in the urine, albuminuria, are a hallmark of diabetic kidney disease and associate with increased risk for end-stage renal disease and cardiovascular events. To gain insight into the pathophysiological mechanisms underlying albuminuria, we conducted meta-analyses of genome-wide association studies and independent replication in up to 5,825 individuals of European ancestry with diabetes mellitus and up to 46,061 without diabetes, followed by functional studies. Known associations of variants in CUBN, encoding cubilin, with the urinary albumin-to-creatinine ratio (UACR) were confirmed in the overall sample (p=2.4*10(-10)). Gene-by-diabetes interactions were detected and confirmed for variants in HS6ST1 and near RAB38/CTSC. SNPs at these loci demonstrated a genetic effect on UACR in individuals with but not without diabetes. The change in average UACR per minor allele was 21% for HS6ST1 and 13% for RAB38/CTSC (p=6.3*10(-7) and 5.8*10(-7), respectively). Experiments using streptozotocin-treated diabetic Rab38 knockout and control rats showed higher urinary albumin concentrations and reduced amounts of megalin and cubilin at the proximal tubule cell surface in Rab38 knockout vs. control rats. Relative expression of RAB38 was higher in tubuli of patients with diabetic kidney disease compared to controls. The loci identified here confirm known and highlight novel pathways influencing albuminuria.
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Publikationstyp
Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
Herausgeber
Schlagwörter
Glomerular-filtration-rate; Risk Population Cohorts; Kidney-disease; Collaborative Metaanalysis; Modulates Proteinuria; Expression; Heritability; Mortality; Insights; Rab38
Keywords plus
Sprache
englisch
Veröffentlichungsjahr
2016
Prepublished im Jahr
2015
HGF-Berichtsjahr
2015
ISSN (print) / ISBN
0012-1797
e-ISSN
1939-327X
ISBN
Bandtitel
Konferenztitel
Konferzenzdatum
Konferenzort
Konferenzband
Quellenangaben
Band: 65,
Heft: 3,
Seiten: 803-817
Artikelnummer: ,
Supplement: ,
Reihe
Verlag
American Diabetes Association
Verlagsort
Alexandria, VA.
Tag d. mündl. Prüfung
0000-00-00
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Gutachter
Prüfer
Topic
Hochschule
Hochschulort
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Veröffentlichungsdatum
0000-00-00
Anmeldedatum
0000-00-00
Anmelder/Inhaber
weitere Inhaber
Anmeldeland
Priorität
Begutachtungsstatus
Peer reviewed
POF Topic(s)
30202 - Environmental Health
Forschungsfeld(er)
Environmental Sciences
Genetics and Epidemiology
PSP-Element(e)
G-504800-001
G-504000-006
G-504091-004
G-504091-002
G-504000-007
G-504090-001
Förderungen
Copyright
Erfassungsdatum
2015-12-09