Lesch Nyhan Syndrome :: essays research papers

Lesch Nyhan SyndromeLesch Nyhan Syndrome (LNS) was first reported in 1964 by Michael Lesch and William L. Nyhan. It is a rare disorder located on the x chromosome. It is a sex-linked trait, which means that it is passed from mother to son. This condition can be contractable or occur spontaneously as a result of a genetic mutation. It usually appears once in every 100,000 male births. Since the forged gene is recessive, females well-nigh never exhibit manifestations of the disease. However, they can be carriers of the allele. Lesch Nyhan is associated with an almost complete absence of the enzyme HGPRTase (hypoxanthene guanine phosphoribosil transferase). This is the enzyme that recycles hypoxanthen and guanine, which are two of the genetic create blocks. When this enzyme is not present, the hypoxanthen and guanine are converted into excessive uric acid. Children more or less four to six months old are usually diag leverd with LND when orange, sand kindred uric acid crystals are observed in their diapers. These crystals cause terrible urination, arthritis and kidney stones as they build up in various areas of the body. LNS had many symptoms. modify people manifest developmental delays, seizures, spacticiy, speech impairment and moderate retardation. The victims usually fall within a 40-80 IQ range. By four old age of age the children usually start to exhibit the most well-known symptom of Lesch Nyhan self-mutilization. The patients begin practicing physical mutilization and hurting themselves through indirect activated injuries. These behaviors wait to grow as the children get older and become more physically capable of inflicting self-injury and more mentally capable of thinking up sore ways to hurt themselves. Early forms of self-mutilization include biting of the tongue and cheeks, gouging the nose and eyes, rubbing various body parts raw, and banging the operate, arms, and legs on things. another(prenominal) realm of abnormal behavior associa ted with LNS is manifested as indirect or emotional self-injury. Individuals with these symptoms are compelled to hurt and abuse themselves and the people they care for most. They lash give away at parents, teachers and aides. A few examples of this behavior include kicking and head butting as they are being dressed or bathed, cursing without provocation, spitting, cat or spilling drinks on care providers. After performing these behaviors, the individual ordain apologize profusely, only to repeat the offending behavior shortly thereafter.Scientists amaze come to recognize this behavior as indirect attempts of self-injury.