signs of autism in toddler boys.. Recent studies began to uncover the mystery of why autism is four times more common in boys than girls.
symptoms of autism in children, Research shows that testosterone and estrogen have opposite effects on gene called RORA. In nerve cells, autism boy, testosterone would reduce the ability of the cell to turn on genes or RORA expression. In contrast, estrogen will increase the ability of the cells.
"Autism is strongly influenced by gender. Study found high levels of testosterone in the fetus at high risk of causing a child with autism," said lead researcher Valerie Hu, autistic spectrum disorder, an expert in biochemistry and molecular biology from George Washington University.
Normally, RORA tasks in the cell is to turn other genes. When the cells have high levels of testosterone, RORA levels will decline and that should affect every gene is turned on by RORA. The knowledge gained from research on nerve cells grown in the laboratory.
The study does not indicate that a low level of RORA will cause autism in addition to the link between these conditions.
autism boy, Several studies have shown RORA deficiency could explain the various aspects of that seen in children with autism. For example, the gene that is supposed to protect nerve cells from the effects of stress and inflammation. Stress and inflammation commonly found in the brains of children with autism.
Research also shows that children with autism brain tissue containing less RORA than healthy children. RORA is also believed to help the body's circadian rhythms. autism boy, That is why children with autism often have sleep disorders.
In contrast to testosterone, estrogen increases levels of RORA in the cell. "This means the female fetus will be protected from autism," said Hu.
It is not a single gene that RORA is involved in the incidence of autism, but, according to Hu RORA very important role.
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