Cyclophilin A and D Levels in Acute Coronary Syndrome and Their Relationship with Cardiovascular Risk Factors.

Objective: Our objective was to evaluate cyclophilin levels in patients with acute coronary syndrome (ACS) and their association with the clinical characteristics of these patients.

Methods: We enrolled 150 patients with ACS (n=75 ST-elevation myocardial infarction [STEMI], n = 75 non-ST-elevation myocardial infarction [NSTEMI]). For comparison, 25 healthy volunteers were included in the study. Levels of cyclophilin A, cyclophilin D, and C-reactive protein (CRP) were measured in both the acute myocardial infarction (AMI) groups and the healthy group. We examined the effects of cardiovascular risk factors, including diabetes mellitus, hypertension, dyslipidemia, age, gender, and smoking on these parameters.

Results: Cyclophilin A levels were significantly lower in the STEMI group, while cyclophilin D and CRP levels were significantly higher in all AMI groups (P < 0.05). A negative correlation existed between cyclophilin A and troponin T and CK-MB (respectively r = -0.287, P < 0.001; r = -0.231, P = 0.005). However, there was no correlation between cyclophilin D and the cardiac markers. A positive correlation was observed between cyclophilin D and CRP (r = 0.219, P = 0.004). Cyclophilin A was associated with hypertension, whereas cyclophilin D was associated with the female gender and dyslipidemia (P < 0.05).

Conclusion: Our findings suggest that a decrease in cyclophilin A indicates a more severe disease in STEMI and an increase in cyclophilin D in both STEMI and NSTEMI may be valuable markers. Therefore, further detailed studies are warranted to monitor their changes and interactions in ACS patients.