Status of Growth Hormone/ Insulin-like Growth Factor-1 (GH/IGF-1) Axis and Growth Failure in Ataxia Telangiectasia (AT)

Summary

This study will evaluate the status of the growth hormone/ insulin-like growth factor-1 (GH/IGF-1) axis in relation to growth failure, body weight and composition and neuroprotection in children with Ataxia telangiectasia (AT).

Timeline

Start

2010-01

Primary completion

2011-12

Completion

2012-09

Publications

• Background BODER E, SEDGWICK RP. Ataxia-telangiectasia; a familial syndrome of progressive cerebellar ataxia, oculocutaneous telangiectasia and frequent pulmonary infection. Pediatrics. 1958 Apr;21(4):526-54. No abstract available.
• Background Lavin MF. Ataxia-telangiectasia: from a rare disorder to a paradigm for cell signalling and cancer. Nat Rev Mol Cell Biol. 2008 Oct;9(10):759-69. doi: 10.1038/nrm2514.
• Background Schubert R, Reichenbach J, Zielen S. Growth factor deficiency in patients with ataxia telangiectasia. Clin Exp Immunol. 2005 Jun;140(3):517-9. doi: 10.1111/j.1365-2249.2005.02782.x.
• Background Isgaard J, Aberg D, Nilsson M. Protective and regenerative effects of the GH/IGF-I axis on the brain. Minerva Endocrinol. 2007 Jun;32(2):103-13.
• Background Yang DQ, Kastan MB. Participation of ATM in insulin signalling through phosphorylation of eIF-4E-binding protein 1. Nat Cell Biol. 2000 Dec;2(12):893-8. doi: 10.1038/35046542.
• Background Peretz S, Jensen R, Baserga R, Glazer PM. ATM-dependent expression of the insulin-like growth factor-I receptor in a pathway regulating radiation response. Proc Natl Acad Sci U S A. 2001 Feb 13;98(4):1676-81. doi: 10.1073/pnas.98.4.1676. Epub 2001 Feb 6.
• Background Shahrabani-Gargir L, Pandita TK, Werner H. Ataxia-telangiectasia mutated gene controls insulin-like growth factor I receptor gene expression in a deoxyribonucleic acid damage response pathway via mechanisms involving zinc-finger transcription factors Sp1 and WT1. Endocrinology. 2004 Dec;145(12):5679-87. doi: 10.1210/en.2004-0613. Epub 2004 Sep 2.
• Background Suzuki A, Kusakai G, Kishimoto A, Shimojo Y, Ogura T, Lavin MF, Esumi H. IGF-1 phosphorylates AMPK-alpha subunit in ATM-dependent and LKB1-independent manner. Biochem Biophys Res Commun. 2004 Nov 19;324(3):986-92. doi: 10.1016/j.bbrc.2004.09.145.
• Background Kieslich M, Hoche F, Reichenbach J, Weidauer S, Porto L, Vlaho S, Schubert R, Zielen S. Extracerebellar MRI-lesions in ataxia telangiectasia go along with deficiency of the GH/IGF-1 axis, markedly reduced body weight, high ataxia scores and advanced age. Cerebellum. 2010 Jun;9(2):190-7. doi: 10.1007/s12311-009-0138-0.
• Background Schubert R, Schmitz N, Pietzner J, Tandi C, Theisen A, Dresel R, Christmann M, Zielen S. Growth hormone supplementation increased latency to tumourigenesis in Atm-deficient mice. Growth Factors. 2009 Oct;27(5):265-73. doi: 10.1080/08977190903112663.

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