Osteogenesis imperfecta Osteogenesis imperfecta (OI) is a contagious dis deliver characterized by bones that dispense s lower-rankingly, often from little or no apparent cause. in that respect are at least four acknowledge forms of the dis launch, representing thorough variation in severity from one round(prenominal)(prenominal) to another. For example, a person may affirm just a about or as many as several coulomb fractures in a lifetime (OI foundation). OI is caused by a genetic defect that affects the bodys work of collagen. It is a defect in both of the two genes that regulation for collagen I, called COL1A1 on chromosome 17, or COL1A2 on chromosome 7. (OIFE) Collagen is the major(ip) protein of the bodys connective tissue and ensnare be likened to the framework some which a building is constructed. In OI, a person has every less collagen than normal, or a poorer quality of collagen than normal that leads to anemic bones that fracture easily (Smith). It is often, though not always, shake-at-able to diagnose OI based whole on clinical features. clinical geneticists apprise also bring to pass biochemical, collagen, or molecular, DNA tests that can help confirm a diagnosis of OI in some situations. The signs and symptoms of OI vary greatly depending on the flake. There are 4 main types: type I, Type II, Type III, and Type IV.
Type I is the most common and mildest type of OI. The bones predisposed to fracture. well-nigh fractures occur before puberty. pack with it corroborate normal or near-normal stature. They have loose joints and low muscle tone. The sclera, which is the whites of the eyes, usually have a blue, purple, or colourize tint. They have a three-sided face. Their spine tends to have a slight curvature. Bone tactile sensation is absent or minimal. It is mathematical to have brittle teeth. audition loss is also... If you want to get a full essay, order it on our website:
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