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Short stature in children with sickle cell anemia correlates with alterations in the IGF-I axis.

Authors: Collett-Solberg, Paulo F  Fleenor, Don  Schultz, William H  Ware, Russell E 
Citation: Collett-Solberg PF, etal., J Pediatr Endocrinol Metab. 2007 Feb;20(2):211-8.
Pubmed: (View Article at PubMed) PMID:17396438

Children with sickle cell anemia (SCA) frequently have short stature. We propose that alterations in the IGF-I axis are involved in their growth failure. We investigated the IGF-I axis in children with SCA and height below the 25th percentile (n = 15) and compared it with that of children with SCA and height above the 50th percentile (n = 7). IGF-I and IGFBP-3 levels were assessed by RIA. IGFBP-3 proteolysis was assessed by a protease activity assay and by Western immunoblots. IGF-I and IGFBP-3 SDS were low for both groups. In the short statured patients, IGF-I SDS correlated with height velocity SDS (p = 0.018). IGFBP-3 SDS, when corrected for bone age, decreased with age (p = 0.0054). IGFBP-3 was proteolyzed in both groups although the short statured patients had lower levels of absolute intact IGFBP-3 when compared with the normally growing group (p = 0.028). We demonstrated that children with SCA have abnormalities in the IGF-I axis, which worsen with age.


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CRRD Object Information
CRRD ID: 12743603
Created: 2017-02-09
Species: All species
Last Modified: 2017-02-09
Status: ACTIVE


RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.