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Original Article
Brief Report
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Volume 335:1363-1367 October 31, 1996 Number 18
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Intrauterine Growth Retardation and Postnatal Growth Failure Associated with Deletion of the Insulin-Like Growth Factor I Gene
Katie A. Woods, M.B., B.S., Cecilia Camacho-Hübner, M.D., Martin O. Savage, M.D., and Adrian J.L. Clark, M.B., B.S.

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Insulin-like growth factor I (IGF-I) mediates the majority of the growth-promoting effects of growth hormone (GH) after birth.1 In the prenatal period, GH does not appear to have a major influence on fetal growth, whereas IGF-I does. Infants with congenital GH deficiency and defects in the GH-receptor gene have only mild retardation of growth at birth,2,3,4 whereas transgenic mice with a homozygous defect of the IGF-I gene (IGF-I knockout mice) have profound embryonic and postnatal growth retardation.5,6,7 Although there is no direct evidence that IGF-I has a prominent role in human fetal growth, fetal tissues express IGF-I from an early . . . [Full Text of this Article]

Case Report

Methods

Endocrine Studies

Assays

Molecular Studies

Results

Endocrine Studies

Neurologic Studies

Molecular Studies

Discussion


Source Information

From the Departments of Endocrinology (K.A.W., M.O.S.) and Chemical Endocrinology (C.C.-H., A.J.L.C.), St. Bartholomew's Hospital, London.

Address reprint requests to Dr. Clark at the Department of Chemical Endocrinology, 51-53 Bartholomew Close, St. Bartholomew's Hospital, London EC1A 7BE, United Kingdom.

References


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