Propionyl carnitine in stable effort angina

Area of Science:

• Cardiology
• Pharmacology
• Exercise Physiology

Background:

• Stable effort angina is a common manifestation of coronary artery disease.
• Anti-ischemic therapies aim to improve myocardial oxygen supply-demand balance.
• Propionyl carnitine (PC) is being investigated for its potential cardiovascular benefits.

Purpose of the Study:

• To evaluate the anti-ischemic activity of propionyl carnitine (PC) in patients with stable effort angina.
• To assess the effects of PC on exercise tolerance and myocardial ischemia markers.

Main Methods:

• A randomized, double-blind, crossover study involving 18 male patients with stable effort angina.
• Patients received either PC (500 mg TID) or placebo (PL) for 30 days, followed by a crossover.
• Maximal symptom-limited bicycle exercise tests were conducted to measure ST-segment depression, time to exercise end, and rate-pressure product.

Main Results:

• Propionyl carnitine significantly increased the time to 1 mm ST-segment depression and the total exercise duration.
• PC reduced ST-segment depression at maximal common work and maximal exercise.
• No significant differences in rate-pressure product were observed between PC and placebo at submaximal and maximal exercise.

Conclusions:

• Propionyl carnitine exhibits an anti-ischemic effect in patients with stable effort angina.
• The findings suggest PC's anti-ischemic activity may be linked to its metabolic actions.
• PC represents a potential therapeutic option for managing stable effort angina.