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Journal of Clinical Endocrinology & Metabolism Vol. 67, No. 1 206-210
doi:10.1210/jcem-67-1-206
Copyright © 1988 by the Endocrine Society.
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Somatostatin- Secreting Islet Cell Tumor (Somatostatinoma): Suppression of Growth Hormone (GH) Release Induced by GH-Releasing Hormone

HARUO IGUCHI, SEIKO KUMAGAI, ITSURO HAYASHI YOUSUKE SEO, HIDEYUKI WAKASUGI, YASUHIRO HARA and MUNEAKI ABE

Departments of Biochemistry (H.I., M.A.), Gastroenterology (Internal Medicine; (S.K., H. W., Y.H.), Pathology (I.H.), and Gastroenterology (Surgery; Y.S.), National Kyushu Cancer Center Fukuoka 815, Japan
Gastroenterology (Surgery; Y.S.), National Kyushu Cancer Center Fukuoka 815, Japan

Address requests for reprints to: Dr. Haruo Iguchi; Department of Biochemistry, National Kyushu Cancer Center, 3-1-1 Notame, Minami-Ku, Fukuoka 815, Japan.

A patient with a somatostatin (SRIH)-secreting islet cell tumor, whose only symptoms were dyspepsia and anemia, is described. The diagnosis of somatostatinoma was based on high plasma SRIH concentrations and immunocytochemical findings. The pancreatic exocrine response to secretin was decreased, whereas the insulin and/or glucagon responses to glucose and arginine were normal. Although the basal plasma GH concentration was normal, the plasma GH response to GHRH was subnormal. Gel permeation chromatography studies indicated that SRIH-14 was the predominant form of SRIH in plasma as well as in tumor tissue.

Received November 6, 1987.







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Copyright © 1988 by The Endocrine Society