The genetic basis for mental retardation
نویسندگان
چکیده
منابع مشابه
The Genetic of Mental Retardation
Mental retardation is a common problem with major implications for a nation’s health, education and community services. The causes of mental retardation have been found to have a definite etiological basis, which may be biochemical, chromosomal, Mendelian genetic disorders, or due to environmental effects such as toxins, infections, trauma or perinatal anoxia. The underlying causes remain unkno...
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Objective: About 50% of severe to profound intellectual disabilities (ID) are caused by genetic factors. In this study we decided to investigate the genetic causes of ID in 69 Bushehrian families to provide information for genetic counseling, carrier detection, and prenatal diagnosis. Materials & Methods: In this study we excluded known chromosomal abnormalities. The majority of families had...
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For several decades, it has been known that mental retardation (MR) is associated with abnormalities in dendrites and dendritic spines. The recent cloning of seven genes that cause nonspecific MR when mutated provides important insights in the cellular mechanisms that result in the dendritic abnormalities associated with MR. Three of the encoded proteins, oligophrenin 1, PAK3 and alpha PIX, int...
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Genetic studies of children with mental retardation Saideh Rajaei Department of Medical and Clinical Genetics, Institute of Biomedicine The Sahlgrenska Academy at the University of Gothenburg, Gothenburg, Sweden, 2013 Mental retardation (MR) is characterised by significant limitations in intellectual function and adaptive behaviour. It is estimated that MR affects up to 3% of the population ...
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The fragile X syndrome is the most frequent cause of inherited mental retardation. It is caused by a dynamic mutation: the progressive expansion of polymorphic (CGG)n trinucleotide repeats located in the promoter region of the FMRI gene at Xq27.3. The cloning of the FMRI gene and the elucidation of the molecular basis of the fragile X syndrome is of great importance for the diagnosis and unders...
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ژورنال
عنوان ژورنال: QJM
سال: 1996
ISSN: 1460-2725,1460-2393
DOI: 10.1093/qjmed/89.3.169