Genetics

Researchers map previously unknown disease in children

Two children from Europe and one from Canada, aged four, six and 10, suffer from a previously unknown disease that causes epileptic seizures, loss of magnesium and reduced intelligence. There is currently no way to treat ...

Genetics

Two genes help older brain gain new cells

Two genes act as molecular midwives to the birth of neurons in adult mammals and when inactivated in mice cause symptoms of Fragile X Syndrome, a major cause of mental retardation, a new Yale University study has shown.

Psychology & Psychiatry

Study implicates glial cells in fragile X syndrome

Research on fragile X syndrome, the most common inherited cause of mental retardation, has focused mostly on how the genetic defect alters the functioning of neurons in the brain. A new study focusing on a different type ...

Genetics

Discovered a cause of mental retardation and autism

The term intellectual disability covers a large number of clinical entities, some with known cause and others of uncertain origin. For example Down syndrome is due to an extra copy of chromosome 21 and Rett syndrome is in ...

Genetics

Mutation in APC2 gene causes Sotos features

Sotos syndrome is a congenital syndrome that is characterized by varying degrees of mental retardation and a large head circumference etc. It is known that 90% of Sotos syndrome patients have mutations in the NSD1 gene. This ...

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Mental retardation

Mental retardation is a generalized disorder, characterized by subaverage cognitive functioning and deficits in two or more adaptive behaviors with onset before the age of 18. Once focused almost entirely on cognition, the definition now includes both a component relating to mental functioning and one relating to individuals' functional skills in their environment.

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