reported on a fetus with neonatal Hutchinson-Gilford progeria syndrome (HGPS) in a recent issue of this journal. We have been involved with a similar child with some manifestations in common with this fetus. We suggest that a diagnosis of neonatal HGPS is incorrect in both cases and, in fact, that H
Hutchinson-gilford progeria is a skeletal dysplasia
✍ Scribed by Catherine M Gordon; Leslie B Gordon; Brian D Snyder; Ara Nazarian; Nicolle Quinn; Susanna Huh; Anita Giobbie-Hurder; Donna Neuberg; Robert Cleveland; Monica Kleinman; David T Miller; Mark W Kieran
- Publisher
- American Society for Bone and Mineral Research
- Year
- 2011
- Tongue
- English
- Weight
- 326 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0884-0431
- DOI
- 10.1002/jbmr.392
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Hutchinson‐Gilford progeria syndrome (HGPS) is a rare segmental premature aging disorder that affects bone and body composition, among other tissues. We sought to determine whether bone density and structural geometry are altered in children with HGPS and whether relationships exist among these parameters and measures of skeletal anthropometry, body composition, and nutrition. We prospectively enrolled 26 children with HGPS (ages 3.1 to 16.2 years). Outcomes included anthropometric data; bone age; areal bone mineral density (aBMD) and body composition by dual‐energy X‐ray absorptiometry (DXA); volumetric bone mineral density (vBMD), strength‐strain index (SSI), and bone structural rigidity calculated from radial transaxial peripheral quantitative computed tomographic (pQCT) images; serum bone biomarkers and hormonal measures; and nutrition assessments. Children with HGPS had low axial aBMD Z‐scores by DXA, which improved after adjustment for height age, whereas differences in radial vBMD by pQCT were less striking. However, pQCT revealed distinct abnormalities in both novel measures of bone structural geometry and skeletal strength at the radius compared with healthy controls. Dietary intake was adequate, confirming that HGPS does not represent a model of malnutrition‐induced bone loss. Taken together, these findings suggest that the phenotype of HGPS represents a unique skeletal dysplasia. © 2011 American Society for Bone and Mineral Research.
📜 SIMILAR VOLUMES
Hutchinson-Gilford progeria syndrome (HGPS) is a rare premature aging disorder normally caused by a spontaneous heterozygous mutation in the LMNA gene that codes for the nuclear lamina protein lamin A. Several enzymes are involved in the processing of its precursor, prelamin A, to the mature lamin A