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Expression of SOCS1, SOCS2, and SOCS3 in growth hormone-stimulated skin fibroblasts from children with idiopathic short stature
-
Paula Ocaranza
,
Fernanda Morales
Veröffentlicht/Copyright:
27. Februar 2012
Abstract
Background/aim: Possible etiologies of idiopathic short stature (ISS) include a range of conditions, some of which may be caused by defects in the modulation of the growth hormone (GH)-signaling pathway. The Janus kinase/signal transducer and activator of transcription pathway is regulated by several mechanisms, including negative feedback regulation by the suppressors of cytokine signaling (SOCS). However, the specific induction of SOCS transcript levels in fibroblasts from ISS patients has not been studied.
Methods: We determined the transcript levels of the SOCS1–3 genes under basal conditions, and in the presence or absence of stimulation with rhGH for 24 h in skin fibroblast cultures obtained from patients with ISS and children with normal height.
Results: Under basal conditions, ISS patients express higher SOCS2–3 transcript levels than control children. After incubation with recombinant human GH (rhGH), the transcript levels of SOCS2 increased significantly in ISS patients compared to controls (0.79±0.06 vs. 0.55±0.07; p=0.03), a pattern which did not achieve statistical significance for SOCS3 transcript levels (0.55±0.08 vs. 0.40±0.07).
Conclusion: The higher baseline transcript levels of the SOCS genes, and the increase observed for SOCS2 after rhGH treatment in ISS patients, suggest that growth retardation in some of these children may be mediated, at least in part, by intracellular overexpression of the SOCS genes.
Keywords: growth hormone; idiopathic short stature; signal transduction; suppressors of cytokine signaling (SOCS)
Received: 2011-12-23
Accepted: 2012-1-13
Published Online: 2012-02-27
Published in Print: 2012-04-01
©2012 by Walter de Gruyter Berlin Boston
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Schlagwörter für diesen Artikel
growth hormone;
idiopathic short stature;
signal transduction;
suppressors of cytokine signaling (SOCS)
Artikel in diesem Heft
- Review Articles
- Peptide YY in children: a review
- Brown adipose tissue: distribution and influencing factors on FDG PET/CT scan
- Mini Review
- Approach to the management of slipped capital femoral epiphysis and primary hyperparathyroidism
- Original Articles
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