Autism Archives - Geoff Ferguson

Do birth complications increase the risk of autism? Some previous studies have suggested a link, but more recent research has cast doubts upon this connection. Amongst research findings rejecting this link are those presented in a paper delivered to the Society for Maternal-Fetal Medicine (SMFM) 2015 Annual Pregnancy Meeting.

The cause or causes of autism are not yet fully known, although studies of twins suggest that there is a strong genetic component to the condition. Environmental factors are also thought to play a part and while a variety of factors have been considered, none have been conclusively implicated. However, it is likely that some environmental factors have an effect very early in the child’s life, hence the interest in what happens during birth. Read more Birth complications and autism ›

Some of the symptoms of autism may be due to the brain failing to prune synapses during the early, crucial years of a child’s life. The resulting overabundance of synapses could contribute to some of the symptoms of autism and an understanding of the mechanisms behind this failure to prune may lead to future treatments for the condition.

A study by researchers from Columbia University Medical Center, reported in Neuron, found higher densities of dendritic spines in the brains of children and adolescents diagnosed with autism, compared to those without that diagnosis. Dendritic spines are those parts of the neuron where synapses are found, the connections that carry signals between neurons. According to one estimate, each neuron contains on average around 7,000 synapses. Read more An overabundance of synapses and autism ›