title: Increased cerebrospinal fluid 5-hydroxytryptamine and 5-hydroxyindoleacetic acid in Kleine-Levin syndrome.
abstract: A 17-year-old man with the Kleine-Levin syndrome died unexpectedly of cardiopulmonary arrest during a period of autonomic instability that followed an episode of megaphagia. At autopsy, the only pertinent finding was mild depigmentation of the locus ceruleus and substantia nigra. Premortem CSF levels of 5-hydroxytryptamine (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) levels were elevated. These findings indicate that many symptoms of the Kleine-Levin syndrome are a result of a neurotransmitter imbalance in the serotonergic pathway of the brainstem.
mesh_terms: D000293:Adolescent; D006970:Disorders of Excessive Somnolence / Q000134:cerebrospinal fluid*; D001068:Feeding and Eating Disorders / Q000134:cerebrospinal fluid*; D006801:Humans; D006897:Hydroxyindoleacetic Acid / Q000134:cerebrospinal fluid*; D008297:Male; D012701:Serotonin / Q000134:cerebrospinal fluid*; D020018:Sexual Dysfunctions, Psychological / Q000134:cerebrospinal fluid*; D012893:Sleep Wake Disorders / Q000134:cerebrospinal fluid*; D013577:Syndrome
chemical_list: D012701:Serotonin; D006897:Hydroxyindoleacetic Acid