We have located links that may give you full text access.
Journal Article
Research Support, Non-U.S. Gov't
Supplementation of creatine and ribose prevents apoptosis in ischemic cardiomyocytes.
BACKGROUND/AIMS: To alleviate ischemia-induced injury in the myocardium, a tissue that depends critically on energy-yielding processes, creatine may be used to enhance energy metabolism, whereas D-ribose may provide building blocks for ATP synthesis. We test the hypothesis that simultaneous supplementation of creatine+D-ribose protects non-irreversibly injured ischemic cardiomyocytes by reducing apoptosis.
RESULTS: When H9c2 cardiomyocytes were exposed to 24-h ischemia (1% O(2) with glucose deprivation), viability was severely compromised, but administration of 2.5 mM creatine + 5 mM D-ribose alleviated the fall in viability, whereas 2.5 mM creatine or 5 mM D-ribose did not. These findings correlated with up-regulation of protein kinase B (Akt) phosphorylation. Creatine+D-ribose also blunted adenosine monophosphate-activated protein kinase (AMPK) and down-regulated apoptosis by reducing caspase-3 activation and poly (ADP-ribose) polymerase (PARP) cleavage.
CONCLUSIONS: Simultaneous administration of creatine+D-ribose confers anti-ischemic protection that was absent when treating cardiomyocytes with either creatine or D-ribose. The involved mechanisms stem from the Akt and AMPK signaling pathways. These findings may form the basis of a paradigm whereby re-energization of non-irreversibly damaged cardiomyocytes is a critical step to counteract apoptosis.
RESULTS: When H9c2 cardiomyocytes were exposed to 24-h ischemia (1% O(2) with glucose deprivation), viability was severely compromised, but administration of 2.5 mM creatine + 5 mM D-ribose alleviated the fall in viability, whereas 2.5 mM creatine or 5 mM D-ribose did not. These findings correlated with up-regulation of protein kinase B (Akt) phosphorylation. Creatine+D-ribose also blunted adenosine monophosphate-activated protein kinase (AMPK) and down-regulated apoptosis by reducing caspase-3 activation and poly (ADP-ribose) polymerase (PARP) cleavage.
CONCLUSIONS: Simultaneous administration of creatine+D-ribose confers anti-ischemic protection that was absent when treating cardiomyocytes with either creatine or D-ribose. The involved mechanisms stem from the Akt and AMPK signaling pathways. These findings may form the basis of a paradigm whereby re-energization of non-irreversibly damaged cardiomyocytes is a critical step to counteract apoptosis.
Full text links
Related Resources
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app
All material on this website is protected by copyright, Copyright © 1994-2024 by WebMD LLC.
This website also contains material copyrighted by 3rd parties.
By using this service, you agree to our terms of use and privacy policy.
Your Privacy Choices
You can now claim free CME credits for this literature searchClaim now
Get seemless 1-tap access through your institution/university
For the best experience, use the Read mobile app