Osteogenesis imperfecta Osteogenesis imperfecta (OI) is a contagious dis pronounce characterized by bones that decompose easily, often from little or no apparent cause. in that respect are at least four accepted forms of the disorder, representing thorough variation in severity from one soul to another. For example, a person may affirm just a about or as many as about(prenominal) coulomb fractures in a lifetime (OI foundation). OI is caused by a genetic defect that affects the bodys production of collagen. It is a defect in both of the two genes that code 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 erect be likened to the framework close to which a building is constructed. In OI, a person has each less collagen than frequent, or a poorer quality of collagen than normal that leads to weak bones that fracture easily (Smith). It is often, though not always, get-at-able to diagnose OI based solely on clinical features. clinical geneticists move also perform 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 type. There are 4 main types: oddball I, Type II, Type III, and Type IV.
Type I is the most common and mildest type of OI. The bones dispose to fracture. nigh fractures occur before puberty. People with it have normal or near-normal stature. They have loose joints and low muscle tone. The sclera, which is the whites of the eyes, commonly have a blu e, purple, or gray tint. They have a triang! ular face. Their spine tends to have a slight curvature. raise speck is absent or minimal. It is possible to have brickle teeth. earshot loss is also... If you want to get a full phase of the moon essay, order it on our website: BestEssayCheap.com
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