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The longitudinal study will enroll 1800 children, aged two to four: 900 diagnosed with autism, 450 with developmental delays, and 450 neurotypical control subjects. The study will involve systematic analyses of immune systems, brain structures, genetics, environmental exposures, blood proteins and other developmental indicators, and the medical ...
Brain sections related to autism. Many causes of autism, including environmental and genetic factors, have been recognized or proposed, but understanding of the theory of causation of autism is incomplete. [1] Attempts have been made to incorporate the known genetic and environmental causes into a comprehensive causative framework. [2]
The amygdala, cerebellum, and many other brain regions have been implicated in autism. [15]Unlike some brain disorders which have clear molecular hallmarks that can be observed in every affected individual, such as Alzheimer's disease or Parkinson's disease, autism does not have a unifying mechanism at the molecular, cellular, or systems level.
Twin studies provide a unique opportunity to explore the genetic and environmental influences on autism spectrum disorder (ASD). By studying identical twins, who share identical DNA, and fraternal twins, who share about half of their DNA, researchers can estimate the heritability of autism by comparing the rates of when one twin is diagnosed with autism while the other is not in identical vs ...
Autism spectrum disorder [a] (ASD), or simply autism, is a neurodevelopmental disorder "characterized by persistent deficits in social communication and social interaction across multiple contexts" and "restricted, repetitive patterns of behavior, interests, or activities". [11] Sensory abnormalities are also included in the diagnostic manuals ...
A 2006 review questioned the common assumption that most children with autism have an intellectual disability. [51] It is possible that the association between an intellectual disability and autism is not because they usually have common causes, but because the presence of both makes it more likely that both will be diagnosed.
Robert K. Naviaux (born in 1956) is an American physician-scientist who specializes in mitochondrial medicine and complex chronic disorders. He discovered the cause of Alpers syndrome, [1] [2] and was part of the team that reported the first mitochondrial DNA (mtDNA) mutation to cause genetic forms of autism. [3]
T3 appears to be critical for the normal formation and growth of nerve cells, as well as the development of junctions between nerve cells where cell-to-cell communication occurs. T3 and other forms of thyroid hormone also help regulate the development of other organs and control the rate of chemical reactions in the body. [citation needed]