نتایج جستجو برای: nyhan syndrome

تعداد نتایج: 622040  

2014
Mrinal Gupta Vikram K. Mahajan Vikas Sharma Pushpinder S. Chauhan Karaninder S. Mehta

This paper describes Lesch-Nyhan syndrome in a 1-year-old boy. This X-linked recessive error of purine metabolism presents in infancy with a constellation of mental and developmental retardation, self-mutilating behavior, neurological features and abnormal urine uric acid: creatinine ratio. The basic defect is deficiency in phosphoribosyl transferase production but exact pathomechanism for clin...

Journal: :Journal of Anaesthesiology Clinical Pharmacology 2012

Journal: :European Journal of Human Genetics 2010

Journal: :Molecular syndromology 2016
Scott Bell Ilaria Kolobova Liam Crapper Carl Ernst

Lesch-Nyhan syndrome (LNS) is a rare X-linked disorder caused by mutations in HPRT1, an important enzyme in the purine salvage pathway. Symptoms of LNS include dystonia, gout, intellectual disability, and self-mutilation. Despite having been characterized over 50 years ago, it remains unclear precisely how deficits in hypoxanthine and guanine recycling can lead to such a profound neurological p...

Journal: :Clinical and experimental rheumatology 2002
A Cossu V Micheli G Jacomelli A Carcassi

Different degrees of hypoxanthine guanine phosphoribosyltransferase (HPRT) deficiency are associated with hyperuricemia, uric acid nephrolithiasis and severe gout. Up to 25-30% of HPRT deficient patients, indicated as neurological variants or HPRT-related hyperuricemia with neurological dysfunction (HRND), may develop neurological manifestation, from mild to severe; the most serious ones manife...

Journal: :International Journal of Research in Medical Sciences 2018

2010
H. A. Jinnah Irene Ceballos-Picot Rosa J. Torres Jasper E. Visser David J. Schretlen Alfonso Verdu Laura E. Laróvere Chung-Jen Chen Antonello Cossu Chien-Hui Wu Radhika Sampat Shun-Jen Chang Raquel Dodelson de Kremer William Nyhan James C. Harris Stephen G. Reich Juan G. Puig

Lesch-Nyhan disease is a neurogenetic disorder caused by deficiency of the enzyme hypoxanthine-guanine phosphoribosyltransferase. The classic form of the disease is described by a characteristic syndrome that includes overproduction of uric acid, severe generalized dystonia, cognitive disability and self-injurious behaviour. In addition to the classic disease, variant forms of the disease occur...

Journal: :Bioinformatics 2013
Kai-Cheng Hsu Feng-Sheng Wang

MOTIVATION Mathematical modeling and optimization have been used for detecting enzyme targets in human metabolic disorders. Such optimal drug design methods are generally differentiated as two stages, identification and decision-making, to find optimal targets. We developed a unified method named fuzzy equal metabolic adjustment to formulate an optimal enzyme target design problem for drug disc...

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