Fragile X Syndrome

Topics: Mental retardation, Genetics, Attention-deficit hyperactivity disorder Pages: 2 (651 words) Published: May 16, 2013
Fragile X Syndrome is the most common inherited cause of learning disorders, as it affects the brain, the center of all the body’s activity. The sufferers are mentally impaired in usually a couple ways. Fragile X Syndrome affects the growth of the brain. The defect, Fragile X Syndrome or FRAXA was discovered by three doctors, Ben Oostra, David Nelson, and Stephen Warren. They were the men to discover the background of the gene and how it was mutated. Fragile X Syndrome is a mutation on the X chromosome, so men are more susceptible to this disorder, though females are also in some slight danger. Fragile X Syndrome can affect anyone with at least one X chromosome. Fragile X Syndrome is also one of the most common of genetic disorders. Fragile X syndrome, also termed Martin-Bell syndrome or marker X syndrome, is the most common cause of inherited mental retardation and is the second most common cause of genetically associated mental deficiencies after Trisomy 21. In 1943, Martin and Bell investigated a family with multiple male members who had mental retardation. They were able to link the disorders to an unknown form of X-linked inheritance. Since the 1960s and early 1970s, progress toward mapping the gene has been steady and rewarding, and the precise genetic defect that causes Fragile X syndrome has been characterized. Advances in molecular genetics have provided reliable diagnostic testing. Patients with Fragile X syndrome have an array of physical, cognitive, and neurobehavioral features. The life expectancy of Fragile X victims is usually not affected by the disorder, giving them a normal life span. The symptoms of Fragile X Syndrome range from slight learning disabilities to complete mental retardation. Some symptoms of Fragile X Syndrome are hyperactivity, hypersensitivity, attention deficit disorder, anxiety, unstable mood, and sometimes epilepsy. Some patients show Autistic-like behaviors, delays in learning how to move, like walking and...
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