Concentrations of Corticotropin-Releasing Hormone, Norepinephrine, MHPG, 5-Hydroxyindoleacetic Acid, and Tryptophan in the Cerebrospinal Fluid of Alcoholic Patients: Serial Sampling Studies

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Abstract
Abnormalities in corticotropin-releasing hormone (CRH) secretion, noradrenergic neurotransmission, and serotonergic activity in the central nervous system (CNS) have all been hypothesized to exist in alcoholic patients, as have abnormalities in hypothalamic-pituitary adrenal function. To test these hypotheses, we continuously sampled cerebrospinal fluid (CSF) from alcoholic patients after 38-124 days of abstinence and from normal volunteers via a flexible, indwelling lumbar subarachnoid catheter and measured CRH, norepinephrine (NE), 3-methoxy-4-hydroxyphenylglycol (MHPG), tryptophan, and 5-hydroxyindoleacetic acid (5-HIAA) concentrations at 10-min intervals, from 11:00 through 17:00 h. The spinal canal catheter was inserted at approximately 08:00 h. Serial plasma ACTH, cortisol, and NE concentrations were also measured. A mixed liquid meal was consumed at 13:00 h. CSF CRH concentrations were lower in alcoholic patients than in normal volunteers (26 ± 15 vs. 60 ± 30 pg/ml, respectively, p

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