Where does the spirituality of autistic children come from?
Twin research shows that the autism prevalence rate of identical twins is as high as 665,438+0% ~ 90%, while fraternal twins have no obvious autism prevalence rate. The recurrence rate between brothers and sisters is estimated at around 4.5%. These phenomena indicate that autism has a genetic tendency.
Studies have shown that some chromosomal abnormalities may lead to autism. The known related chromosomes are 7q, 22q 13, 2q37, 18q and XP. Some sex chromosome abnormalities can also show autism. Such as 47, XYY and 45, X/46, XY chimera, etc.
As early as the late 1970s, it was found that pregnant women infected with the virus would increase the probability of their offspring suffering from autism. Later, several studies suggested that there may be a certain relationship between pregnancy infection and autism. Known related pathogens are rubella virus, cytomegalovirus, varicella-zoster virus, herpes simplex virus, Treponema pallidum and Toxoplasma gondii.
It is speculated that the antibodies produced by these pathogens enter the fetus from the placenta and cross-react with the developing nervous system of the fetus, which interferes with the normal development of the nervous system and leads to autism.