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Published on: January 28, 2020
[The relation of serum paraoxonase-1 activity with isolated coronary artery ectasia: an observational study]
Ibrahim Halil Altıparmak1, Zekeriya Kaya, Hatice Sezen
1Şanlıurfa Eğitim ve Araştırma Hastanesi, Kardiyoloji Kliniği, Şanlıurfa, Turkey. ihaltiparmak@gmail.com
Insights
Decreased serum paraoxonase-1 enzyme activity (SPA) and high-density lipoprotein-cholesterol (HDLC) levels are linked to coronary artery ectasia (CAE) development, similar to coronary artery disease (CAD). This suggests SPA and HDLC may play roles in CAE pathogenesis.
Area of Science:
- Cardiovascular Medicine
- Biochemistry
- Biomarkers
Context:
- Coronary artery ectasia (CAE) involves abnormal coronary artery dilatations.
- Paraoxonase-1 (PON-1) is an antioxidant enzyme associated with high-density lipoprotein-cholesterol (HDLC).
- PON-1's role in CAE pathogenesis is not fully understood.
Purpose:
- To investigate serum paraoxonase-1 enzyme activity (SPA) in patients with CAE.
- To compare SPA levels in CAE patients with those having coronary artery disease (CAD) and normal coronary arteries (NCA).
Summary:
- This cross-sectional study compared SPA and HDLC levels in 44 CAE patients, 40 with critical CAD, 40 with minimal CAD, and 40 with NCA.
- No significant differences in age, sex, diabetes, hypertension, or smoking were observed between groups.
- Lowest HDLC was found in CAD patients, while NCA patients had the highest. CAE and CAD groups showed similar HDLC levels.
- Lowest SPA was observed in CAD patients, with NCA patients showing the highest. CAE and CAD groups exhibited similar SPA levels.
Impact:
- Findings suggest that decreased SPA and HDLC levels are associated with CAE development, mirroring associations seen in CAD.
- These results indicate potential roles for SPA and HDLC in the pathophysiology of CAE.
- This research highlights potential biomarkers for CAE risk stratification and understanding disease mechanisms.
Objective:
Coronary artery ectasia (CAE) is a congenital or acquired anomaly characterized with localized or diffuse dilatations of coronary arteries. Paraoxonase (PON-1) is a high-density lipoprotein-cholesterol (HDLC) associated antioxidant enzyme that prevents atherosclerosis. The aim of this study was to investigate serum paraoxonase-1 enzyme activity (SPA) in patients with CAE in comparison patients with coronary artery disease (CAD) and normal coronary arteries.
Methods:
We have evaluated 44 patients with isolated IKAE, 40 cases with normal coronary arteries (NCA), 40 cases with critical CAD (CAD) and 40 cases with minimal CAD (MCAD) in this cross-sectional observational study. Demographic and biochemical data of patients were collected. SPA was determined spectrophotometrically. Among-group comparisons, ANOVA, Kruskal-Wallis and Chi-square tests were used; Bonferroni test was used for post-hoc analysis, Pearson's correlation analysis to determine the parameters associated with the SPA.
Results:
There were no differences among groups with regard to age, sex, presence of diabetes, hypertension and smoking (p>0.05 for all). The highest HDLC was detected in patients with NCA and lowest HDLC was detected in patients with CAD (respectively 52±15 mg/dL; 41±16 mg/d L, p=0.021). CAD and CAE groups were similar with respect to HDLC levels (p>0.05). The highest SPA level was detected in patients with NKA and the lowest SPA level was detected in patients with CAD (respectively 250.78±59.37U/L; 163.39±49.28 U/L, p=0.005). CAD and CAE groups were similar with respect to SPA levels (p>0.05).
Conclusion:
Both decreased SPA and decreased HDLC levels are closely related to the development of the CAE similar to CAD.
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