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Published on: January 28, 2020
Reduced apelin levels in stable angina
Zhao Li1, Yinglong Bai, Jian Hu
1Department of Cardiology, The First Affiliated Hospital of China Medical University, Shenyang, China.
Insights
Plasma apelin levels are significantly lower in patients with stable angina compared to healthy individuals. Lower apelin levels in these patients correlate with increased coronary artery stenosis severity.
Area of Science:
- Cardiology
- Endocrinology
- Biochemistry
Background:
- Stable angina is a common manifestation of coronary artery disease.
- Apelin is an endogenous peptide with potential roles in cardiovascular function.
- Previous research suggests altered apelin levels in various cardiovascular conditions.
Purpose of the Study:
- To determine plasma apelin levels in patients with stable angina.
- To investigate the relationship between plasma apelin and the severity of coronary artery stenosis.
Main Methods:
- A study cohort included 96 patients with stable angina and 78 controls.
- Plasma apelin levels were measured using a commercial immunoassay.
- Coronary artery stenosis severity was quantified using the Gensini score.
Main Results:
- Plasma apelin levels were significantly lower in the stable angina group (1.24 ng/mL) compared to controls (1.98 ng/mL).
- A negative correlation was observed between plasma apelin levels and the Gensini score in stable angina patients (r = -0.399).
Conclusions:
- This study demonstrates reduced plasma apelin levels in a homogenous group of stable angina patients.
- Plasma apelin levels are inversely associated with the degree of coronary artery stenosis.
Objective:
To investigate the change in the plasma apelin level in patients with stable angina.
Methods:
The study enrolled 96 patients with stable angina as the Stable Angina Group and another 78 outpatients with no angina as the Control Group.
Subjects:
were excluded if they had a history of acute coronary syndrome, rheumatic heart disease, cardiomyopathy, cardiac arrhythmia, diabetes mellitus, hyperthyroidism, or antecedent hypertension. Plasma apelin levels of all subjects were determined using a commercially available immunoassay. In addition, blood was sampled for measurements of 8-iso-prostaglandin-F2alpha by enzyme-linked immunosorbent assay. The severity of coronary artery stenosis of stable angina patients was evaluated using the Gensini score.
Results:
The mean levels of apelin in plasma were significantly lower in subjects with stable angina compared with controls (1.24 vs.1.98 ng/mL, p <0.05). The plasma level of apelin in the stable angina group was negatively correlated with the Gensini score (r =-0.399, p <0.05).
Conclusion:
Reduced apelin levels were observed in this homogenous population of stable angina subjects and the plasma apelin level was negatively correlated with the degree of coronary stenosis.
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