Creatine kinase in ischemic and inflammatory disorders.

Area of Science:

• Biochemistry
• Cellular Metabolism
• Pathophysiology

Background:

• The creatine/phosphocreatine pathway is crucial for cellular energy buffering and transfer.
• Specific creatine kinase enzymes enable localized energy storage and rapid energy mobilization.
• This pathway is conserved across species and vital for maintaining cellular homeostasis.

Purpose of the Study:

• To review recent insights into the creatine kinase pathway.
• To provide a rationale for dietary creatine supplementation in human pathologies.
• To highlight the role of creatine in energy metabolism and cellular protection.

Main Methods:

• Literature review of creatine kinase pathway function.
• Analysis of creatine supplementation effects in various pathologies.
• Examination of endogenous regulation of creatine metabolism during hypoxia.

Main Results:

• Creatine supplementation benefits pathologies involving ischemia, hypoxia, or oxidative stress.
• Creatine and phosphocreatine prevent ATP depletion and cellular acidification.
• The pathway enhances post-ischemic recovery, scavenges free radicals, and stabilizes membranes.

Conclusions:

• The creatine kinase energy system is regulated by hypoxic signaling, indicating endogenous protective mechanisms.
• Dietary creatine supplementation shows promise for treating human ischemic and inflammatory conditions.
• Understanding this pathway offers therapeutic strategies for diseases involving energy deficits.