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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 J+Cardiovasc+Pharmacol+Ther
2016 ; 21
(6
): 549-562
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Nicorandil, a Nitric Oxide Donor and ATP-Sensitive Potassium Channel Opener,
Protects Against Dystrophin-Deficient Cardiomyopathy
#MMPMID26940570
Afzal MZ
; Reiter M
; Gastonguay C
; McGivern JV
; Guan X
; Ge ZD
; Mack DL
; Childers MK
; Ebert AD
; Strande JL
J Cardiovasc Pharmacol Ther
2016[Nov]; 21
(6
): 549-562
PMID26940570
show ga
BACKGROUND: Dystrophin-deficient cardiomyopathy is a growing clinical problem
without targeted treatments. We investigated whether nicorandil promotes
cardioprotection in human dystrophin-deficient induced pluripotent stem cell
(iPSC)-derived cardiomyocytes and the muscular dystrophy mdx mouse heart. METHODS
AND RESULTS: Dystrophin-deficient iPSC-derived cardiomyocytes had decreased
levels of endothelial nitric oxide synthase and neuronal nitric oxide synthase.
The dystrophin-deficient cardiomyocytes had increased cell injury and death after
2 hours of stress and recovery. This was associated with increased levels of
reactive oxygen species and dissipation of the mitochondrial membrane potential.
Nicorandil pretreatment was able to abolish these stress-induced changes through
a mechanism that involved the nitric oxide-cyclic guanosine monophosphate pathway
and mitochondrial adenosine triphosphate-sensitive potassium channels. The
increased reactive oxygen species levels in the dystrophin-deficient
cardiomyocytes were associated with diminished expression of select antioxidant
genes and increased activity of xanthine oxidase. Furthermore, nicorandil was
found to improve the restoration of cardiac function after ischemia and
reperfusion in the isolated mdx mouse heart. CONCLUSION: Nicorandil protects
against stress-induced cell death in dystrophin-deficient cardiomyocytes and
preserves cardiac function in the mdx mouse heart subjected to ischemia and
reperfusion injury. This suggests a potential therapeutic role for nicorandil in
dystrophin-deficient cardiomyopathy.
|Animals
[MESH]
|Cardiomyopathies/genetics/metabolism/physiopathology/*prevention & control
[MESH]