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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+Genet
2010 ; 6
(8
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
Genome-wide association studies of serum magnesium, potassium, and sodium
concentrations identify six Loci influencing serum magnesium levels
#MMPMID20700443
Meyer TE
; Verwoert GC
; Hwang SJ
; Glazer NL
; Smith AV
; van Rooij FJ
; Ehret GB
; Boerwinkle E
; Felix JF
; Leak TS
; Harris TB
; Yang Q
; Dehghan A
; Aspelund T
; Katz R
; Homuth G
; Kocher T
; Rettig R
; Ried JS
; Gieger C
; Prucha H
; Pfeufer A
; Meitinger T
; Coresh J
; Hofman A
; Sarnak MJ
; Chen YD
; Uitterlinden AG
; Chakravarti A
; Psaty BM
; van Duijn CM
; Kao WH
; Witteman JC
; Gudnason V
; Siscovick DS
; Fox CS
; Köttgen A
PLoS Genet
2010[Aug]; 6
(8
): ä PMID20700443
show ga
Magnesium, potassium, and sodium, cations commonly measured in serum, are
involved in many physiological processes including energy metabolism, nerve and
muscle function, signal transduction, and fluid and blood pressure regulation. To
evaluate the contribution of common genetic variation to normal physiologic
variation in serum concentrations of these cations, we conducted genome-wide
association studies of serum magnesium, potassium, and sodium concentrations
using approximately 2.5 million genotyped and imputed common single nucleotide
polymorphisms (SNPs) in 15,366 participants of European descent from the
international CHARGE Consortium. Study-specific results were combined using
fixed-effects inverse-variance weighted meta-analysis. SNPs demonstrating
genome-wide significant (p<5 x 10(-8)) or suggestive associations (p<4 x 10(-7))
were evaluated for replication in an additional 8,463 subjects of European
descent. The association of common variants at six genomic regions (in or near
MUC1, ATP2B1, DCDC5, TRPM6, SHROOM3, and MDS1) with serum magnesium levels was
genome-wide significant when meta-analyzed with the replication dataset. All
initially significant SNPs from the CHARGE Consortium showed nominal association
with clinically defined hypomagnesemia, two showed association with kidney
function, two with bone mineral density, and one of these also associated with
fasting glucose levels. Common variants in CNNM2, a magnesium transporter studied
only in model systems to date, as well as in CNNM3 and CNNM4, were also
associated with magnesium concentrations in this study. We observed no
associations with serum sodium or potassium levels exceeding p<4 x 10(-7).
Follow-up studies of newly implicated genomic loci may provide additional
insights into the regulation and homeostasis of human serum magnesium levels.