Supplementation of creatine and ribose prevents apoptosis and right ventricle hypertrophy in hypoxic hearts

Anna Caretti, Paola Bianciardi, Marina Marini, Provvidenza M. Abruzzo, Alessandra Bolotta, Carlo Terruzzi, Franco Lucchina, Michele Samaja

Research output: Contribution to journalArticlepeer-review

Abstract

Background/Aims. The simultaneous supplementation of creatine and D-ribose has been shown to reduce apoptosis in vitro in non-irreversibly injured cultured ischemic cardiomyocytes through down-regulation of the signaling mechanisms governing adenosine monophosphate-activated protein kinase (AMPK) and protein kinase B (Akt). Here, we test the hypothesis that an analogous mechanism exists in vivo when the challenge is chronic exposure to hypoxia. Methods. Five week-old mice were exposed to an atmosphere containing 10% O2 for 10 days. Mice were gavaged daily with vehicle, creatine, D-ribose or creatine + D-ribose. After sacrifice, myocardial and pulmonary tissue were harvested for structural and biochemical analyses. Results. Hypoxia induced right ventricle hypertrophy and left ventricle apoptosis. Both phenotypes were slightly reduced by either creatine or D-ribose, whereas the simultaneous administration of creatine + D-ribose almost completely reversed the effects of hypoxia. Furthermore, creatine + D-ribose diminished the hypoxia-induced increases in the activity of AMPK, Akt and JNK, but not of ERK. Finally, the hypoxia-induced pulmonary overexpression of endothelin-1 mRNA was markedly reduced by creatine + D-ribose. Conclusion. The simultaneous administration of creatine + D-ribose confers additional cardiovascular protection with respect to that observed with either creatine or D-ribose. The mechanism stems from the AMPK and Akt signaling pathways. These findings may form the basis of a paradigm to re-energize non-irreversibly damaged cardiomyocytes, counteracting injury by triggering specific signaling pathways.

Original languageEnglish
Pages (from-to)6873-6879
Number of pages7
JournalCurrent Pharmaceutical Design
Volume19
Issue number39
DOIs
Publication statusPublished - Dec 2013

Keywords

  • Akt
  • AMPK
  • Apoptosis
  • Creatine
  • Hypoxia
  • Pulmonary endothelium
  • Ribose
  • Right vs left ventricle

ASJC Scopus subject areas

  • Drug Discovery
  • Pharmacology

Fingerprint Dive into the research topics of 'Supplementation of creatine and ribose prevents apoptosis and right ventricle hypertrophy in hypoxic hearts'. Together they form a unique fingerprint.

Cite this