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Ultrasound Assessment of Endothelial-Dependent Flow-Mediated Vasodilation of the Brachial Artery in Clinical Research
Published on: October 22, 2014
Arterial endothelial function is impaired in treated depression
A J M Broadley1, A Korszun, C J H Jones
1Department of Cardiology, University of Wales College of Medicine, Heath Park, Cardiff, UK. a.j.m.broadley@lineone.net
Insights
Patients with treated depression exhibit impaired arterial endothelial function, a risk factor for coronary heart disease (CHD). This finding suggests a potential link between depression and cardiovascular disease.
Area of Science:
- Cardiovascular Medicine
- Psychiatry
- Endothelial Function Research
Background:
- Coronary heart disease (CHD) risk is elevated in individuals with depression.
- Endothelial dysfunction is a common pathway for acquired CHD risk factors.
- The endothelial function in patients with treated depression and no other conventional risk factors remains unclear.
Purpose of the Study:
- To investigate arterial endothelial function in patients with treated depression.
- To compare endothelial function in depressed patients with healthy controls lacking traditional CHD risk factors.
- To determine if depression itself is associated with endothelial dysfunction.
Main Methods:
- A case-control study was conducted.
- Participants included patients with treated major depression and matched healthy controls, aged 18-55, without other CHD risk factors.
- Arterial endothelial function was assessed using brachial artery flow-mediated dilation (FMD).
Main Results:
- Flow-mediated dilation was significantly impaired in patients with depression (-0.7%) compared to controls (5.7%, p=0.005).
- Baroreflex sensitivity did not show significant differences between the groups.
- These findings indicate compromised endothelial function in treated depression.
Conclusions:
- Treated depression is associated with impaired arterial endothelial function.
- This endothelial dysfunction may be a contributing factor to the increased CHD risk observed in individuals with depression.
- Further research is warranted to explore the mechanisms linking depression and cardiovascular health.
Objectives:
To determine whether patients with treated depression but no other risk factors for coronary heart disease (CHD) have abnormal arterial endothelial function, an abnormality that is common to other acquired risk factors for CHD.
Design:
Case-control study.
Setting:
Secondary care departments of cardiology and psychiatry in a single centre and the surrounding community.
Participants:
Patients with treated depression and matched healthy controls, aged 18-55 years, without conventional acquired risk factors for CHD. These were recruited from local community mental health clinics, general practices, and patient support groups, and through posters placed in public areas of the hospital. Patients had major depression as defined in the American Psychiatric Association's Diagnostic and statistical manual of mental disorders, fourth edition. Fifteen patients and 12 controls were recruited, and 12 patients and 10 controls completed the study.
Outcomes:
Brachial artery flow mediated dilatation and baroreflex sensitivity.
Results:
Arterial endothelial function measured by flow mediated dilatation was impaired in depression (mean (SEM) -0.7% (1.7%)) compared with controls (5.7% (0.9%), p = 0.005 by non-paired t test). Baroreflex sensitivity did not differ significantly between the groups.
Conclusion:
Arterial endothelial function is impaired in treated depression. This abnormality may contribute to the increased risk of CHD seen in depression.
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