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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 Brain+Pathol
2017 ; 27
(1
): 64-76
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
SLC20A2 Deficiency in Mice Leads to Elevated Phosphate Levels in Cerbrospinal
Fluid and Glymphatic Pathway-Associated Arteriolar Calcification, and
Recapitulates Human Idiopathic Basal Ganglia Calcification
#MMPMID26822507
Wallingford MC
; Chia JJ
; Leaf EM
; Borgeia S
; Chavkin NW
; Sawangmake C
; Marro K
; Cox TC
; Speer MY
; Giachelli CM
Brain Pathol
2017[Jan]; 27
(1
): 64-76
PMID26822507
show ga
Idiopathic basal ganglia calcification is a brain calcification disorder that has
been genetically linked to autosomal dominant mutations in the sodium-dependent
phosphate co-transporter, SLC20A2. The mechanisms whereby deficiency of Slc20a2
leads to basal ganglion calcification are unknown. In the mouse brain, we found
that Slc20a2 was expressed in tissues that produce and/or regulate cerebrospinal
fluid, including choroid plexus, ependyma and arteriolar smooth muscle cells.
Haploinsufficient Slc20a2 +/- mice developed age-dependent basal ganglia
calcification that formed in glymphatic pathway-associated arterioles. Slc20a2
deficiency uncovered phosphate homeostasis dysregulation characterized by
abnormally high cerebrospinal fluid phosphate levels and hydrocephalus, in
addition to basal ganglia calcification. Slc20a2 siRNA knockdown in smooth muscle
cells revealed increased susceptibility to high phosphate-induced calcification.
These data suggested that loss of Slc20a2 led to dysregulated phosphate
homeostasis and enhanced susceptibility of arteriolar smooth muscle cells to
elevated phosphate-induced calcification. Together, dysregulated cerebrospinal
fluid phosphate and enhanced smooth muscle cell susceptibility may predispose to
glymphatic pathway-associated arteriolar calcification.