Elevated plasma levels of neuropeptide Y in patients with panic disorder
Abstract
OBJECTIVE: Neuropeptide Y is a pancreatic polypeptide closely associated with noradrenergic activity both in the central and peripheral nervous systems. The objective of this study was to assess plasma neuropeptide Y-like immunoreactivity in panic disorder. METHOD: Radioimmunoassays were performed in 12 patients with DSM-III-R panic disorder and two groups of normal comparison subjects (N = 22 and N = 16). RESULTS: Markedly higher plasma neuropeptide Y-like immunoreactivity was found in patients with panic disorder. CONCLUSIONS: Higher plasma neuropeptide Y-like immunoreactivity suggests that this peptide may be implicated in the etiology or expression of symptoms of panic disorder.
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