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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 Int+J+Dev+Neurosci
2014 ; 38
(ä): 59-67
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IUGR disrupts the PPAR?-Setd8-H4K20me(1) and Wnt signaling pathways in the
juvenile rat hippocampus
#MMPMID25107645
Ke X
; Xing B
; Yu B
; Yu X
; Majnik A
; Cohen S
; Lane R
; Joss-Moore L
Int J Dev Neurosci
2014[Nov]; 38
(ä): 59-67
PMID25107645
show ga
Intrauterine growth restriction (IUGR) programs neurodevelopmental impairment and
long-term neurological morbidities. Neurological morbidities in IUGR infants are
correlated with changes hippocampal volume. We previously demonstrated that IUGR
alters hippocampal cellular composition in both neonatal and juvenile rat pups in
association with altered hippocampal gene expression and epigenetic determinants.
PPAR? signaling is important for neurodevelopment as well as epigenetic integrity
in the brain via the PPAR?-Setd8-H4K20me(1) axis and Wnt signaling. We
hypothesized that IUGR would decrease expression of PPAR?, Setd8, and H4K20me(1)
in juvenile rat hippocampus. We further hypothesized that reduced
PPAR?-Setd8-H4K20me(1) would be associated with reduced Wnt signaling genes Wnt3a
and ?-catenin, and wnt target gene Axin2. To test our hypothesis we used a rat
model of uteroplacental insufficiency-induced IUGR. We demonstrated that PPAR?
localizes to oligodendrocytes, neurons and astrocytes within the juvenile rat
hippocampus. We also demonstrated that IUGR reduces levels of PPAR?, Setd8 and
H4K20me(1) in male and female juvenile rat hippocampus in conjunction with
reduced Wnt signaling components in only male rats. We speculate that reduced
PPAR? and Wnt signaling may contribute to altered hippocampal cellular
composition which, in turn, may contribute to impaired neurodevelopment and
subsequent neurocognitive impairment in IUGR offspring.