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      Suppression of Growth Hormone by Oral Glucose in the Evaluation of Tall Stature

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          Abstract

          Excess secretion of growth hormone is a rare diagnosis in children or adolescents with tall stature. An oral glucose tolerance test (OGT) with determination of growth hormone is generally recommended to exclude this disorder. In order to test the validity of this approach in pediatric subjects, OGT tests were performed in 126 tall subjects (age: 12.4 ± 1.8 years; height: 3.1 ± 0.8 SDS). Nonsuppression was present in 39 subjects, however, anthropometric analysis and follow-up excluded the diagnosis of eosinophilic pituitary adenoma in all patients. The lowest GH concentration was reached 90 min after ingestion of oral glucose, GH rose above baseline at 180 min. Plasma concentrations of glucose and insulin did not differ between suppressors and nonsuppressors. In conclusion, absent suppression of growth hormone by oral glucose is common in tall children and adolescents. The test is therefore not recommended as a general screening for excess growth hormone. Prolonging the test beyond 120 min does not increase the diagnostic value.

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          Most cited references 1

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          Enhanced sensitivity growth hormone (GH) chemiluminescence assay reveals lower postglucose nadir GH concentrations in men than women

           I Chapman (1994)
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            Author and article information

            Journal
            HRE
            Horm Res Paediatr
            10.1159/issn.1663-2818
            Hormone Research in Paediatrics
            S. Karger AG
            1663-2818
            1663-2826
            1999
            January 1999
            31 March 1999
            : 51
            : 1
            : 20-24
            Affiliations
            Department of Pediatrics, University of Ulm, Germany
            Article
            23308 Horm Res 1999;51:20–24
            10.1159/000023308
            10095165
            © 1999 S. Karger AG, Basel

            Copyright: All rights reserved. No part of this publication may be translated into other languages, reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying, recording, microcopying, or by any information storage and retrieval system, without permission in writing from the publisher. Drug Dosage: The authors and the publisher have exerted every effort to ensure that drug selection and dosage set forth in this text are in accord with current recommendations and practice at the time of publication. However, in view of ongoing research, changes in government regulations, and the constant flow of information relating to drug therapy and drug reactions, the reader is urged to check the package insert for each drug for any changes in indications and dosage and for added warnings and precautions. This is particularly important when the recommended agent is a new and/or infrequently employed drug. Disclaimer: The statements, opinions and data contained in this publication are solely those of the individual authors and contributors and not of the publishers and the editor(s). The appearance of advertisements or/and product references in the publication is not a warranty, endorsement, or approval of the products or services advertised or of their effectiveness, quality or safety. The publisher and the editor(s) disclaim responsibility for any injury to persons or property resulting from any ideas, methods, instructions or products referred to in the content or advertisements.

            Page count
            Figures: 3, Tables: 1, References: 38, Pages: 5
            Categories
            Original Paper

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