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The relationship between serum bilirubin concentration and coronary artery ectasia
Mehmet Demir1, Canan Demir2, Serdar Keçeoğlu1
1Cardiology Department, Bursa Yüksek İhtisas Education and Research Hospital, Bursa, Turkey.
Insights
Serum bilirubin levels were significantly lower in patients with coronary artery ectasia (CAE) compared to controls. This finding suggests a potential link between lower bilirubin and the development of CAE.
Area of Science:
- Cardiology
- Biochemistry
- Vascular Biology
Background:
- The underlying causes of coronary artery ectasia (CAE) remain unclear, with potential links to arteritis, endothelial dysfunction, and atherothrombosis.
- Elevated serum bilirubin is known to possess anti-inflammatory and anti-proliferative effects on vascular smooth muscle cells, and is associated with cardiovascular disease.
- The specific relationship between serum bilirubin levels and CAE has not been previously established.
Purpose of the Study:
- To investigate and compare serum bilirubin concentrations between individuals diagnosed with coronary artery ectasia and a control group.
- To explore potential associations between bilirubin levels and the presence of CAE.
Main Methods:
- A case-control study involving 50 patients with CAE and 30 healthy controls.
- Demographic data, routine biochemical tests, and complete blood counts were collected for all participants.
- Serum bilirubin levels (total, direct, and indirect) were measured and compared between the CAE and control groups.
Main Results:
- No significant differences in basic demographic characteristics were observed between the CAE patients and the control group.
- Serum levels of total, direct, and indirect bilirubin were found to be significantly lower in patients with CAE compared to controls (p<0.001 for all).
Conclusions:
- This study demonstrates a significant association between lower serum bilirubin levels and coronary artery ectasia.
- Reduced serum bilirubin may play a role in the pathophysiology of CAE.
Introduction:
The pathophysiology of coronary artery ectasia (CAE) has not been clearly identified, although multiple abnormalities including arteritis, endothelial dysfunction, and atherothrombosis have been reported. Several studies have demonstrated that higher serum bilirubin inhibits the inflammation and proliferation of vascular smooth muscle cells; also there is a relationship between serum bilirubin and cardiovascular disease. However, the relationship between bilirubin and CAE is still unknown.
Aim:
We compared serum bilirubin concentration between CAE patients and controls.
Material And Methods:
This study included 50 CAE patients (20 male, mean age: 60.26 ±10.6 years) and 30 control persons (10 male, mean age: 57.86 ±11.6 years). These participants underwent concurrent routine biochemical tests and leukocyte count, hemoglobin, hematocrit and platelet count in whole blood. These parameters were compared between groups.
Results:
No statistically significant difference was found between the two groups in terms of basic characteristics. Total, direct and indirect serum bilirubin levels were significantly lower among persons with CAE patients than controls (0.37 ±0.4 vs. 0.71 ±0.6 and 0.13 ±0.1 vs. 0.27 ±0.2 and 0.24 ±0.2 vs. 0.43 ±0.4 mg/dl; all p<0.001, respectively).
Conclusions:
Our study revealed a relationship between serum bilirubin and CAE.
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