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Tero Toivanen

A week ago, a new study published in the Archives of General - 0 views

  • The Howard Hughes Medical Institute describes how researchers using "high-throughput gene sequencing technology" were able to identify several de novo or spontaneous gene mutations in 20 children with sporadic autism spectrum disorders -- that is, their family members showed no other sign of autism.
  • The team identified 21 spontaneous mutations -- meaning they weren't inherited from either parent -- in the children's DNA. Eleven of these were mutations that would alter the protein encoded by the affected gene. In four of the 20 children, the researchers found mutations that were severe, some of which have been previously linked to autism, intellectual disability, and epilepsy.
  • one child had a mutation in the GRIN2B gene, which is crucial for neuronal signaling.
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  • Another individual had an extra nucleotide in FOXP1, a gene that, along with its close relatives, has been heavily implicated in language defects.
  • These new findings support the 'multi-hit' model of autism, which suggests that having more than one mutation can cause or worsen symptoms of autism and other brain disorders. The different combinations of mutations may contribute to the heterogeneity in ASDs.
  • That such different combinations of genetic mutations contribute to a child being autistic could account for why individuals with an ASD diagnosis have some very similar, and very different, features.
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    "The Howard Hughes Medical Institute describes how researchers using "high-throughput gene sequencing technology" were able to identify several de novo or spontaneous gene mutations in 20 children with sporadic autism spectrum disorders -- that is, their family members showed no other sign of autism."
Tero Toivanen

A Radical New Autism Theory - Page 1 - The Daily Beast - 0 views

  • . As posited by Henry and Kamila Markram of the Swiss Federal Institute of Technology in Lausanne, suggests that the fundamental problem in autism-spectrum disorders is not a social deficiency, but rather an hypersensitivity to experience, which includes an overwhelming fear response.
  • “There are those who say autistic people don’t feel enough,” says Kamila Markram. “We’re saying exactly the opposite: They feel too much.” Virtually all people with ASD report various types of oversensitivity and intense fear
  • “I think most people with ASD feel emotional empathy and care about the welfare of others very deeply.”
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  • A groundbreaking study suggests people with autism-spectrum disorders such as Asperger’s do not lack empathy—rather they feel others’ emotions too intensely to cope.
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    A groundbreaking study suggests people with autism-spectrum disorders such as Asperger's do not lack empathy-rather they feel others' emotions too intensely to cope.
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