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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.
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. Bruck syndrome type 1 is caused by a homozygous mutation in the FKBP10 gene. Type 2 is caused by a homozygous mutation in the ...
The following is a list of genetic disorders and if known, type of mutation and for the chromosome involved. Although the parlance "disease-causing gene" is common, it is the occurrence of an abnormality in the parents that causes the impairment to develop within the child. There are over 6,000 known genetic disorders in humans.
The mutations in the gene that causes osteoporosis-pseudoglioma either impaire the cells' ability to produce LRP5 protein or they change the single amino acids in the protein. They cannot insert themselves into the outside of the cell, which in turn does not allow them to do their function.
COL1A1/2-related osteogenesis imperfecta is inherited in an autosomal dominant manner. The proportion of cases caused by a De novo COL1A1 or COL1A2 mutations are the cause of osteogenesis imperfecta in the vast majority of perinatally lethal osteogenesis imperfecta, and progressively deforming osteogenesis imperfecta.
These alterations negatively affect tissues that are rich in type I collagen, such as the skin, bones, teeth, and tendons, leading to the signs and symptoms of type III osteogenesis imperfecta. Osteogenesis imperfecta, type IV: Several different types of mutations in the COL1A1 gene cause osteogenesis imperfecta type IV. These mutations may ...
Osteogenesis imperfecta – Group of genetic disorders resulting in fragile bones, a condition characterized by bones breaking unusually easily, caused by mutations in genes related to those responsible for FOP; Progressive osseous heteroplasia – Rare genetic condition characterised by cutaneous or subcutaneous ossification
Diagnosis is suspected based on symptoms and X-rays with confirmation by genetic testing. [4] Other conditions that can produce similar symptoms include mandibuloacral dysplasia, pyknodysostosis, osteogenesis imperfecta, and Hajdu-Cheney syndrome. [5] Treatment includes supportive measures such as a device to protect the skull and dental care. [5]
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