The skeletal dysplasias are a heterogeneous group of disorders which result in disproportionate short stature and/or skeletal deformities. Although they have long been considered to be generalized disorders of endochondral and/or membranous ossification, the extent of their heterogeneity has only recently been recognized and little is known concerning their pathogenesis. This project is directed toward a multidisciplinary investigation of the clinical, genetic, morphologic, biochemical and molecular characteristics of the skeletal dysplasias.
The specific aims of this proposal will be: (a) expansion and further computerization of the International Skeletal Dysplasia Registry; (b) Definition of the clinical variability and genetic heterogeneity of the skeletal dysplasias; (c) definition of the natural history, growth characteristics and complications of each of these disorders and evaluation of methods for their treatment and management; (d) improvement of methods for their prenatal diagnosis; (e) clinical evaluation of medical and surgical methods of growth promotion; (f) elucidation of the histological, histochemical, immunocytochemical and ultrastructural characteristics of chondro-osseous tissue in each of these disorders; (g) elucidation of their basic biochemical defects by means of biochemical analysis of cartilage and cultured chondrocytes; (h) linkage analysis of individual syndromes with RFLP's of certain candidate genes; and (i) elucidation of their molecular defects by the analysis of collagen and proteoglycan mRNA and DNA. This program project is divided into a core facility - The International Skeletal Dysplasia Registry, plus five separate grant proposals: (1) Clinical and morphological studies; (2) Studies on differentiated chondrocytes in cultures; (3) Collagen biochemistry in the skeletal dysplasias; (4) Molecular studies in the skeletal dysplasias; (5) Analysis of proteoglycans in chondrodysplasias.

Agency
National Institute of Health (NIH)
Institute
Eunice Kennedy Shriver National Institute of Child Health & Human Development (NICHD)
Type
Research Program Projects (P01)
Project #
5P01HD022657-12
Application #
2609069
Study Section
Special Emphasis Panel (SRC (DR))
Program Officer
Hewitt, Tyl
Project Start
1986-12-01
Project End
2001-11-30
Budget Start
1997-12-01
Budget End
1998-11-30
Support Year
12
Fiscal Year
1998
Total Cost
Indirect Cost
Name
Cedars-Sinai Medical Center
Department
Type
DUNS #
075307785
City
Los Angeles
State
CA
Country
United States
Zip Code
90048
Joeng, Kyu Sang; Lee, Yi-Chien; Lim, Joohyun et al. (2017) Osteocyte-specific WNT1 regulates osteoblast function during bone homeostasis. J Clin Invest 127:2678-2688
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Rajagopal, Abbhirami; Homan, Erica P; Joeng, Kyu Sang et al. (2016) Restoration of the serum level of SERPINF1 does not correct the bone phenotype in Serpinf1 null mice. Mol Genet Metab 117:378-82
Xue, Yuan; Schoser, Benedikt; Rao, Aliz R et al. (2016) Exome Sequencing Identified a Splice Site Mutation in FHL1 that Causes Uruguay Syndrome, an X-Linked Disorder With Skeletal Muscle Hypertrophy and Premature Cardiac Death. Circ Cardiovasc Genet 9:130-5
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Weinstein, Michael M; Tompson, Stuart W; Chen, Yuqing et al. (2014) Mice expressing mutant Trpv4 recapitulate the human TRPV4 disorders. J Bone Miner Res 29:1815-1822
Joeng, Kyu Sang; Lee, Yi-Chien; Jiang, Ming-Ming et al. (2014) The swaying mouse as a model of osteogenesis imperfecta caused by WNT1 mutations. Hum Mol Genet 23:4035-42
Campeau, Philippe M; Kasperaviciute, Dalia; Lu, James T et al. (2014) The genetic basis of DOORS syndrome: an exome-sequencing study. Lancet Neurol 13:44-58

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