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      The Impact of Long-Term Growth Hormone Treatment on Metabolic Parameters in Japanese Patients with Short Stature Born Small for Gestational Age

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          Abstract

          Background/Aims: An examination of the effects of up to 260 weeks of growth hormone (GH) therapy on metabolic parameters in Japanese children born small for gestational age (SGA). Methods: Data were analysed from a 156-week extension of a 104-week multicentre, randomised, double-blind, parallel-group trial. Sixty-five children born SGA (age 3-<8 years) received 33 μg/kg/day (n = 31, 64.5% male) or 67 μg/kg/day (n = 34, 58.8% male) GH for 260 weeks. Changes in metabolic parameters - glucose, insulin, total cholesterol, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol - were recorded. Alterations in weight, body mass index standard deviation score (BMI SDS) and vital signs were also evaluated. Results: Over 260 weeks of GH treatment, a positive correlation between Δheight SDS and Δinsulin-like growth factor-I SDS was observed. Insulin and glucose levels were generally unaffected. Favourable changes in lipid profiles were recorded, which were maintained for the study duration. No adverse alterations in weight, BMI SDS or vital signs were noted. Conclusion: Long-term, continuous GH treatment in children born SGA appears to be efficacious, associated with potential benefits for several metabolic parameters and associated with no long-term safety concerns.

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          Type 2 (non-insulin-dependent) diabetes mellitus, hypertension and hyperlipidaemia (syndrome X): relation to reduced fetal growth

          Two follow-up studies were carried out to determine whether lower birthweight is related to the occurrence of syndrome X-Type 2 (non-insulin-dependent) diabetes mellitus, hypertension and hyperlipidaemia. The first study included 407 men born in Hertfordshire, England between 1920 and 1930 whose weights at birth and at 1 year of age had been recorded by health visitors. The second study included 266 men and women born in Preston, UK, between 1935 and 1943 whose size at birth had been measured in detail. The prevalence of syndrome X fell progressively in both men and women, from those who had the lowest to those who had the highest birthweights. Of 64-year-old men whose birthweights were 2.95 kg (6.5 pounds) or less, 22% had syndrome X. Their risk of developing syndrome X was more than 10 times greater than that of men whose birthweights were more than 4.31 kg (9.5 pounds). The association between syndrome X and low birthweight was independent of duration of gestation and of possible confounding variables including cigarette smoking, alcohol consumption and social class currently or at birth. In addition to low birthweight, subjects with syndrome X had small head circumference and low ponderal index at birth, and low weight and below-average dental eruption at 1 year of age. It is concluded that Type 2 diabetes and hypertension have a common origin in sub-optimal development in utero, and that syndrome X should perhaps be re-named "the small-baby syndrome".
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            Adult height after long-term, continuous growth hormone (GH) treatment in short children born small for gestational age: results of a randomized, double-blind, dose-response GH trial.

            The GH dose-response effect of long-term continuous GH treatment on adult height (AH) was evaluated in 54 short children born small for gestational age (SGA) who were participating in a randomized, double-blind, dose-response trial. Patients were randomly and blindly assigned to treatment with either 3 IU (group A) or 6 IU (group B) GH/m(2).d ( approximately 0.033 or 0.067 mg/kg.d, respectively). The mean (+/-SD) birth length was -3.6 (1.4), the age at the start of the study was 8.1 (1.9) yr, and the height SD score (SDS) at the start of the study -3.0 (0.7). Seventeen of the 54 children were partially GH deficient (stimulated GH peak, 10-20 mU/liter). Fifteen non-GH-treated, non-GH-deficient, short children born SGA, with similar inclusion criteria, served as controls [mean (+/-SD) birth length, -3.3 (1.2); age at start, 7.8 (1.7) yr; height SDS at start, -2.6 (0.5)]. GH treatment resulted in an AH above -2 SDS in 85% of the children after a mean (+/-SD) GH treatment period of 7.8 (1.7) yr. The mean (SD) AH SDS was -1.1 (0.7) for group A and -0.9 (0.8) for group B, resulting from a mean (+/-SD) gain in height SDS of 1.8 (0.7) for group A and 2.1 (0.8) for group B. No significant differences between groups A and B were found for AH SDS (mean difference, 0.3 SDS; 95% confidence interval, -0.2, 0.6; P > 0.2) and gain in height SDS (mean difference, 0.3 SDS; 95% confidence interval, -0.1, 0.7; P > 0.1). When corrected for target height, the mean corrected AH SDS was -0.2 (0.8) for group A and -0.4 (0.9) for group B. The mean (+/-SD) AH SDS of the control group [-2.3 (0.7)] was significantly lower than that of the GH-treated group (P < 0.001). Multiple regression analysis indicated the following predictive variables for AH SDS: target height SDS, height SDS, and chronological age minus bone age (years) at the start of the study. GH dose had no significant effect. In conclusion, long-term continuous GH treatment in short children born SGA without signs of persistent catch-up growth leads to a normalization of AH, even with a GH dose of 3 IU/m(2).d ( approximately 0.033 mg/kg.d).
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              Standardized centile curves and reference intervals of serum insulin-like growth factor-I (IGF-I) levels in a normal Japanese population using the LMS method.

              Measurements of insulin-like growth factor-I (IGF-I) are useful not only for diagnosis and management of patients with growth hormone (GH)-related disorders but also for assessing nutritional status. We reported population-based references of serum IGF-I in 1996. However, they did not properly reflect data in the transition period from puberty to maturity. The aim of the present study was to re-establish a set of normative data for IGF-I for the Japanese population. The study included 1,685 healthy Japanese subjects (845 males, 840 females) from 0 to 83 years old. Subjects suffering from diseases that could affect IGF-I levels were excluded. Obese or extremely thin adult subjects were also excluded. IGF-I concentrations were determined by commercially available immunoradiometric assays. The reference intervals were calculated using the LMS method. Median IGF-I levels reached 310 ng/mL in males at the age of 14 years and 349 ng/mL in females at the age of 13 years, falling to 124 ng/mL and 103 ng/mL, respectively, by the age of 70 years. The mean pretreatment IGF-1 SD scores in patients with severe GH deficiency (GHD) obtained from the database of the Foundation for Growth Science and from clinical studies for adult GHD were -2.1±1.6 and -4.9±2.5, respectively. The present study established age- and gender-specific normative IGF-I data for the Japanese population and showed the utility of these references for screening patients with severe GHD.
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                Author and article information

                Journal
                HRP
                Horm Res Paediatr
                10.1159/issn.1663-2818
                Hormone Research in Paediatrics
                S. Karger AG
                1663-2818
                1663-2826
                2014
                May 2014
                11 February 2014
                : 81
                : 4
                : 272-279
                Affiliations
                aMedical Affairs, Global Marketing GHT, Novo Nordisk A/S, Søborg, Denmark; bClinical Statistics Group, Medical and Scientific Affairs Department, Novo Nordisk Pharma Ltd., cNational Center for Child Health and Development and dTanaka Growth Clinic, Department of Pediatrics, Tokyo, Japan
                Author notes
                *Anne-Marie Kappelgaard, Global Marketing GHT, Novo Nordisk A/S, Vandtårnsvej 108-110, DK-2860 Søborg (Denmark), E-Mail amk@novonordisk.com
                Article
                358196 Horm Res Paediatr 2014;81:272-279
                10.1159/000358196
                24526136
                4e101e94-1cf3-4b06-b419-1d7dc26cfed0
                © 2014 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.

                History
                : 25 September 2013
                : 20 December 2013
                Page count
                Figures: 2, Tables: 1, Pages: 8
                Categories
                Original Paper

                Endocrinology & Diabetes,Neurology,Nutrition & Dietetics,Sexual medicine,Internal medicine,Pharmacology & Pharmaceutical medicine
                Children,Growth hormone,Small for gestational age,Japanese,Metabolic effects

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