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2018 ; 7
(1
): ä Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
CYP-450 Epoxygenase Derived Epoxyeicosatrienoic Acid Contribute To Reversal of
Heart Failure in Obesity-Induced Diabetic Cardiomyopathy via PGC-1 ? Activation
#MMPMID29707604
Singh SP
; McClung JA
; Bellner L
; Cao J
; Waldman M
; Schragenheim J
; Arad M
; Hochhauser E
; Falck JR
; Weingarten JA
; Peterson SJ
; Abraham NG
Cardiovasc Pharm Open Access
2018[]; 7
(1
): ä PMID29707604
show ga
We have previously shown that an Epoxyeicosatrienoic Acid (EET) -agonist has
pleiotropic effects and reverses cardiomyopathy by decreasing inflammatory
molecules and increasing antioxidant signaling. We hypothesized that
administration of an EET agonist would increase Peroxisome proliferator-activated
receptor-gamma coactivator (PGC-1?), which controls mitochondrial function and
induction of HO-1 and negatively regulates the expression of the proinflammatory
adipokines CCN3/NOV in cardiac and pericardial tissues. This pathway would be
expected to further improve left ventricular (LV) systolic function as well as
increase insulin receptor phosphorylation. Measurement of the effect of an EET
agonist on oxygen consumption, fractional shortening, blood glucose levels,
thermogenic and mitochondrial signaling proteins was performed. Control obese
mice developed signs of metabolic syndrome including insulin resistance,
hypertension, inflammation, LV dysfunction, and increased NOV expression in
pericardial adipose tissue. EET agonist intervention decreased pericardial
adipose tissue expression of NOV, while normalized FS, increased PGC-1?, HO-1
levels, insulin receptor phosphorylation and improved mitochondrial function,
theses beneficial effect were reversed by deletion of PGC-1?. These studies
demonstrate that an EET agonist increases insulin receptor phosphorylation,
mitochondrial and thermogenic gene expression, decreased cardiac and pericardial
tissue NOV levels, and ameliorates cardiomyopathy in an obese mouse model of the
metabolic syndrome.