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Catecholamines and monoamine oxidase activity in anxiety
Acta Psychiatrica Scandinavica
|March 1, 1981
Summary
Relaxation training significantly reduced anxiety, platelet monoamine oxidase activity, and catecholamine levels in generalized anxiety disorder patients. These physiological markers correlated with anxiety reduction after the intervention.
Area of Science:
- Neuroscience
- Psychology
- Biochemistry
Background:
- Generalized anxiety disorder (GAD) is associated with altered physiological markers.
- Platelet monoamine oxidase (MAO) activity and catecholamine levels (epinephrine, norepinephrine) are implicated in anxiety disorders.
Purpose of the Study:
- To investigate the effects of relaxation training on MAO activity, catecholamine levels, and anxiety in individuals with GAD.
- To explore the correlation between physiological changes and anxiety reduction following relaxation.
Main Methods:
- Quantified platelet MAO activity, state anxiety, and trait anxiety in GAD patients and healthy controls at two 4-week intervals.
- Measured plasma epinephrine and norepinephrine in a subset of participants.
- Administered relaxation training to the GAD group between assessments.
Main Results:
- The GAD group showed significant reductions in MAO activity, epinephrine, norepinephrine, and anxiety levels post-relaxation training.
- No significant changes were observed in the control group.
- Significant correlations were found between catecholamine levels, MAO activity, and anxiety reduction in the GAD group.
Conclusions:
- Relaxation training is an effective intervention for reducing anxiety and associated physiological markers in GAD.
- MAO activity and catecholamine levels may serve as potential biomarkers for treatment response in GAD.