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Lymphocyte beta-adrenergic receptor binding in panic disorder
S L Brown1, D S Charney, S W Woods
1Clinical Neuroscience Research Unit, Connecticut Mental Health Center, New Haven.
Psychopharmacology
|January 1, 1988
Summary
Patients with panic disorder exhibit altered beta-adrenergic receptor binding in lymphocytes. These findings suggest noradrenergic dysfunction contributes to panic anxiety pathophysiology.
Area of Science:
- Neuroscience
- Psychiatry
- Pharmacology
Background:
- Panic disorder and agoraphobia are anxiety disorders.
- Noradrenergic dysfunction is implicated in anxiety disorders.
- Beta-adrenergic receptors play a role in the sympathetic nervous system response.
Purpose of the Study:
- To investigate lymphocyte beta-adrenergic receptor binding in patients with panic disorder and agoraphobia.
- To compare receptor binding characteristics between patients and healthy controls.
Main Methods:
- Lymphocyte beta-adrenergic receptor binding was measured using [125I]CNP.
- Participants included patients with panic disorder (N=4), agoraphobia with panic attacks (N=17), and age- and sex-matched healthy subjects (N=22).
Main Results:
- Patients demonstrated significantly fewer beta-adrenergic receptor binding sites compared to healthy subjects.
- Patients exhibited a significantly higher binding affinity for beta-adrenergic receptors.
- Comorbid major depression did not influence these receptor binding alterations.
Conclusions:
- The study findings support the hypothesis of noradrenergic dysfunction in the pathophysiology of panic anxiety.
- Altered beta-adrenergic receptor characteristics in lymphocytes may serve as a biomarker for panic-related disorders.