Immunoreactive Human Epidermal Growth Factor in Human Pancreatic Juice* (original) (raw)

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1Third Division, Department of Medicine, Kobe University School of Medicine, Kobe 650, and the Division of Clinical Nutrition, Kyoto University Faculty of Medicine Kyoto 606, Japan; Department of Medicine, Kyoto University Faculty of Medicine Kyoto 606, Japan

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1Third Division, Department of Medicine, Kobe University School of Medicine, Kobe 650, and the Division of Clinical Nutrition, Kyoto University Faculty of Medicine Kyoto 606, Japan; Department of Medicine, Kyoto University Faculty of Medicine Kyoto 606, Japan

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1Third Division, Department of Medicine, Kobe University School of Medicine, Kobe 650, and the Division of Clinical Nutrition, Kyoto University Faculty of Medicine Kyoto 606, Japan; Department of Medicine, Kyoto University Faculty of Medicine Kyoto 606, Japan

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1Third Division, Department of Medicine, Kobe University School of Medicine, Kobe 650, and the Division of Clinical Nutrition, Kyoto University Faculty of Medicine Kyoto 606, Japan; Department of Medicine, Kyoto University Faculty of Medicine Kyoto 606, Japan

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1Third Division, Department of Medicine, Kobe University School of Medicine, Kobe 650, and the Division of Clinical Nutrition, Kyoto University Faculty of Medicine Kyoto 606, Japan; Department of Medicine, Kyoto University Faculty of Medicine Kyoto 606, Japan

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Received:

15 October 1981

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YUKIO HIRATA, MASAHITO UCHIHASHI, MASAKO NAKAJIMA, TAKUO FUJITA, SHIGERU MATSUKURA, Immunoreactive Human Epidermal Growth Factor in Human Pancreatic Juice, The Journal of Clinical Endocrinology & Metabolism, Volume 54, Issue 6, 1 June 1982, Pages 1242–1245, https://doi.org/10.1210/jcem-54-6-1242
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Abstract

Human epidermal growth factor (hEGF), whichstimulates the growth of a variety of cells in culture, has recentlybeen isolated from human urine. In the present study, we identifiedsignificant amounts of immunoreactive (IR) hEGF (mean± SE, 2.3 ±0.09 ng/ml; n = 3) in human pancreatic juice. TheIR-hEGF materials were immunologically indistinguishablefrom standard hEGF, although they were only 5% as active inreceptor binding to human placental membrane as in RIA. Gelexclusion chromatography of the pancreatic juice under neutraland acidic conditions revealed three distinct IR-hEGF componentswith different molecular sizes. Incubation of l25I-labeledhEGF with either the pancreatic juice or the high molecularweight component(s) yielded no aggregationor degradationproducts. These data suggest that fully immunoreactive butmuch less bioactive hEGF-like substances which are heterogeneousin size are secreted into human pancreatic juice. Theirtissue (s) of origin and physiological functions, if any, remain tobe elucidated. (J Clin Endocrinol Metab54: 1242, 1982)

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Copyright © 1982 by The Endocrine Society

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