WINSTON G. SATTERLEE, M.D.; ARTHUR SERPICK, M.D., F.A.C.P.; JOSEPH R. BIANCHINE, Ph.D., M.D.
Para-chlorophenylalanine is a potent depleter of tissue serotonin (5-hydroxytryptamine). Since 5-hydroxytryptamine may contribute to the pathogenesis of several aspects of the carcinoid syndrome, for 1 year we treated a patient with this syndrome with para-chlorophenylalanine. A 59-year-old man developed chronic diarrhea, hepatomegaly, right-sided valvular heart lesion, and cutaneous flush. Exploratory abdominal examination showed ileal carcinoid tumor metastatic to liver and nodes. Urine 5-hydroxyindoleacetic acid and serum 5-hydroxytryptamine levels were abnormally high. Para-chlorophenylalanine treatment promptly reduced both levels to normal and halted the diarrhea. Chronic treatment with para-chlorophenylalanine controlled the production of 5-hydroxytryptamine and diarrhea but did not prevent tumor growth, flushing, or progression of cardiac lesions.
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SATTERLEE WG, SERPICK A, BIANCHINE JR. The Carcinoid Syndrome: Chronic Treatment with Para-Chlorophenylalanine. Ann Intern Med. 1970;72:919–921. doi: 10.7326/0003-4819-72-6-919
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Published: Ann Intern Med. 1970;72(6):919-921.
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Print ISSN: 0003-4819 | Online ISSN: 1539-3704
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