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Osteogenesis imperfecta (IPA: / ˌ ɒ s t i oʊ ˈ dʒ ɛ n ə s ɪ s ˌ ɪ m p ɜːr ˈ f ɛ k t ə /; [4] OI), colloquially known as brittle bone disease, is a group of genetic disorders that all result in bones that break easily.
These include osteogenesis imperfecta, [63] Multicentric carpotarsal osteolysis syndrome, ... Prognosis. Hip fractures per 1000 person-years [186] WHO category
It was first discovered in 1972 by Bianchine et al. when they described three families with osteogenesis imperfecta, pseudoglioma, retinoblastoma, and recurrence of bone fractures. [ 8 ] References
In classic non-deforming osteogenesis imperfecta with blue sclerae or common variable osteogenesis imperfecta with normal sclerae, nearly 60% of cases are de novo. COL1A1/2-related osteogenesis imperfecta is identified by repeated fractures with trivial trauma, defective dentinogenesis imperfecta (DI), and hearing loss.
Osteoporosis is rare in children and adolescents. When it occurs, it is usually secondary to some other condition, [1] e.g. osteogenesis imperfecta, rickets, eating disorders or arthritis. In some cases, there is no known cause and it is called idiopathic juvenile osteoporosis. Idiopathic juvenile osteoporosis usually goes away spontaneously. [2]
1277 12842 Ensembl ENSG00000108821 ENSMUSG00000001506 UniProt P02452 P11087 RefSeq (mRNA) NM_000088 NM_007742 RefSeq (protein) NP_000079 NP_031768 Location (UCSC) Chr 17: 50.18 – 50.2 Mb Chr 11: 94.83 – 94.84 Mb PubMed search Wikidata View/Edit Human View/Edit Mouse Collagen, type I, alpha 1, also known as alpha-1 type I collagen, is a protein that in humans is encoded by the COL1A1 gene ...
Osteogenesis imperfecta, congenital dwarfisms, skeletal dysplasias: Treatment: Asfotase alfa (Strensiq), an enzyme replacement therapy: Prognosis: Severe perinatal forms are lethal without treatment; adult forms may only show moderate symptoms: Frequency: Rare (1 in 100,000); [3] more common in some populations [4]
The genetics of Bruck syndrome differs from osteogenesis imperfecta. Osteogenesis imperfecta usually involves autosomal dominant mutations to COL1A1 or COL1A2 which encode type 1 procollagen. [ 6 ] Bruck syndrome is linked to mutations in two genes, and therefore is divided in two types.