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More proof! Vaccines DON'T cause Autism

Posted by on Mar. 27, 2014 at 3:34 PM
  • 74 Replies
3 moms liked this

Forgive me if this has already been posted. Studies show thst Autism seems to occur in the womb (2nd trimester).

http://www.npr.org/blogs/health/2014/03/26/294446735/brain-changes-suggest-autism-starts-in-the-womb?utm_medium=facebook&utm_source=npr&utm_campaign=nprnews&utm_content=03032014

The symptoms of autism may not be obvious until a child is a toddler, but the disorder itself appears to begin well before birth.

Brain tissue taken from children who died and also happened to have autism revealed patches of disorganization in the cortex, a thin sheet of cells that's critical for learning and memory,researchers report in the New England Journal of Medicine. Tissue samples from children without autism didn't have those characteristic patches.

Organization of the cortex begins in the second trimester of pregnancy. "So something must have gone wrong at or before that time," says Eric Courchesne, an author of the paper and director of the Autism Center of Excellence at the University of California, San Diego.

The finding should bolster efforts to understand how genes control brain development and lead to autism. It also suggests that treatment should start early in childhood, when the brain is capable of rewiring to work around damaged areas.

The study grew out of research by Courchesne on development of the cortex in children with autism. In typical kids, the cortex is "like a layer cake," he says. "There are six layers, one on top of the other, and in each layer there are different types of brain cells."

Courchesne suspected that these layers might be altered in the brains of children with autism. So he and a team of researchers studied samples of cortex from 11 children with autism and an equal number of typical kids. The cortex came from areas known to be associated with the symptoms of autism.

In the brain tissue from typical children, the cortex had six distinct layers, each made up of a specific type of cell. But in the children with autism, "there are patches in which specific cells in specific layers seem to be missing," Courchesne says. So instead of distinct layers, there are disorganized collections of brain cells.

These patches of disorganized cortex would have different effects on the brain depending on where they occur and how many there are, Courchesne says. That could help explain why the symptoms of autism vary so much.

And finding that the damage isn't everywhere suggests how a child's brain might compensate by rewiring to avoid the trouble spots, Courchesne says. "That's one of our guesses about how it is that autistic children, with treatment, very commonly get better," he says.

The new study appears to confirm research from the University of California, Los Angeles showing that people with autism tend to have genetic changes that could disturb the formation of layers in the cortex.

And it adds to the already considerable evidence that autism starts in the womb, says Dr. Stanley Nelson, a geneticist at UCLA. "The overwhelming set of data is that the problems are existing during brain development, probably as an embryo or fetus," he says.

But some of the new study's findings are surprising and even a bit perplexing, Nelson says. For example, it's odd that only certain bits of brain tissue contain these disorganized cells. "Why is the whole cortex not disorganized?" he says.

It's also odd that 10 of the 11 children with autism had the same sort of disorganized patches of cortex, Nelson says. That's not what you would expect with a disorder known to involve many different genes, presumably affecting many different aspects of brain development.

So he'd like to know what researchers would find if they looked at hundreds of brains instead of just a few. "What fraction of all the kids with autism are going to have these small patches?" he says. "I think the jury's out on that."

Nelson is right that there's no clear answer yet, says Ed Lein, one of the paper's authors and an investigator at the Allen Institute for Brain Science in Seattle. But it's possible that many different combinations of genes involved in autism could lead to the same patches of disorganization in the layers of cortex.

by on Mar. 27, 2014 at 3:34 PM
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Replies (1-10):
Anonymous
by Anonymous 1 on Mar. 27, 2014 at 3:36 PM
I agree
Lunarprancer
by Betsy on Mar. 27, 2014 at 3:37 PM
6 moms liked this

 "Unless the mother was vaccinated during pregnancy...right? Or perhaps the vaccination caused something akin to an autoimmune response in this group of children which affected the brain and allowed for these "disorganized cells" to kick in with regard to the child's development. In which case, vaccines could still very well be a possible culprit in the development of autism. I don't think this new information rules out possible environmental factors at all--including vaccines."

I didn't write that, but I agree with it.

Heisenberg
by on Mar. 27, 2014 at 3:39 PM
2 moms liked this

Or if years of vaccinations, and chemically made foods in the mother and or father are to blame. Who knows.

Quoting Lunarprancer:

 "Unless the mother was vaccinated during pregnancy...right? Or perhaps the vaccination caused something akin to an autoimmune response in this group of children which affected the brain and allowed for these "disorganized cells" to kick in with regard to the child's development. In which case, vaccines could still very well be a possible culprit in the development of autism. I don't think this new information rules out possible environmental factors at all--including vaccines."

I didn't write that, but I agree with it.


Mum2D
by on Mar. 27, 2014 at 3:39 PM
4 moms liked this
My son isn't vaccinated, and it's not because of a fear of autism.
Anonymous
by Anonymous 2 on Mar. 27, 2014 at 3:39 PM
7 moms liked this
I think most sane, rational people have known all along that vaccines don't cause autism. Very interesting article, though. Thank you for sharing it :)
mommy4life15
by Bronze Member on Mar. 27, 2014 at 3:40 PM
This was posted already but have always known that autism was genetic (due to knowing autistic kids who have had genetic testing)
Lunarprancer
by Betsy on Mar. 27, 2014 at 3:40 PM
1 mom liked this

 Same here.

Quoting Mum2D: My son isn't vaccinated, and it's not because of a fear of autism.

 

ZombieMeat37
by Gold Member on Mar. 27, 2014 at 3:41 PM
4 moms liked this

I've never concluded that vaccines CAUSE autism, but one would be a fool, to disregard the fact that vaccines can be a TRIGGER.

FYI....Autism had nothing to do with my decision to not vaccinate.

Anonymous
by Anonymous 3 on Mar. 27, 2014 at 3:42 PM
1 mom liked this

Nobody can prove either way. With anything. The true cause is not known, it's all theories and conjecture.

Randi02
by Platinum Member on Mar. 27, 2014 at 3:42 PM

No one has claimed that it causes autism. It may act as an environmental trigger in certain individuals, but certainly not all.

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