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(Daily Mail)   Scientists discover that DNA from a male child can pass into a woman's body from the fetus. Just think, guys... you left your DNA in your mother. FAP   ( divider line
    More: Strange, DNA, Y chromosomes, white blood cells, Jekyll and Hyde, American scientists, rheumatoid arthritis, scientists believe, premature birth  
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1687 clicks; posted to Geek » on 27 Sep 2012 at 3:51 AM (5 years ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook   more»

16 Comments     (+0 »)
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2012-09-27 02:27:47 AM  
Ok I laughed
2012-09-27 03:58:13 AM  
Um, subby, you do realize that a DNA packet with a Y chromosome had to pass into the woman's body in order for there to be a fetus, right?
2012-09-27 04:02:58 AM  
male DNA was found in the brain of a woman who died aged 94

I saw that video on redtube.
2012-09-27 05:35:37 AM  
I thought they were pretty well aware of this.

I have read cases of pre and post pregnancy DNA scans being quite different, and there is a metric ass-ton of anecdotal evidence of pretty significant changes in genetic profile from carrying one of those damned parasites around for 9 months while it wrecks your body inside and out.
2012-09-27 06:02:32 AM  
Dumb question: Can excessive alcohol consumption hinder or even destroy these DNA packets?

I'm the oldest of three boys. When my mom was pregnant with me, she drank like a fish because my dad was away (He was a civil engineer and had to go where the jobs were). My mom probably would've left me in a nearby park and told people that an eagle flew away with me if she could've gotten away with it. My dad was around when my mom was pregnant with my younger brother, and she barely touched a drop. After he was born, she gave him all her love and nurturing to the point where i was like a bad SNL skit. Then dad died shortly after getting my mom pregnant one more time, and once again, she drank until the bartenders told her to go home. And after my youngest brother was born, she was her same old neglectful, hateful self again.
2012-09-27 08:11:17 AM  
Am the only annoyed by the way that article is written? Could it be more repetitious?

Why having a son puts a woman in a new frame of mind: DNA can pass into body from foetus before reaching brain

- Cells pass into mother's body before making it to brain
- Male DNA may linger there for decades, scientists say
Study in journal by cancer research centre in Seattle

A mother's children are never far from her mind - and scientists may have worked out why.
They believe that if a woman has a son, some of his cells pass into her body before reaching her brain.
And the male DNA may linger there for decades.

Bond: Scientists believe that if a woman has a son, some of his cells pass into her body before reaching her - and the male DNA may linger there for decades
2012-09-27 08:19:05 AM  
Old news is so exciting.

/Old news to science geeks
2012-09-27 08:58:03 AM  
" you left your DNA in your mother."

and not for the last time.....
2012-09-27 09:52:09 AM  
2012-09-27 11:26:27 AM  

tanman1975: Radiolab covered this on Mother's Day

You're welcome, Ma.

Came for radiolab - leaving happy

(also constantly creeped out after hearing that story that it is possible that getting a girl preggers could trigger auto-immune diseases)
2012-09-27 12:35:33 PM  
thecartoonpictures.comView Full Size

I left behind a special present. Have a happy 50th birthday.
2012-09-27 01:05:28 PM  
Here's a better version of the press release:

DNA from male cells, most likely from a fetus or sibling, are often found in the brains of women, according to a study released yesterday (September 26) in PLOS ONE. The findings are the first demonstration of microchimerism-in which cells that originated in one individual integrate into the tissues of another-in the human brain, and could have implications for disease.

"Knowing cells are in the brain brings home the idea that we're a little more diverse than we thought we were," said Nelson. "So conceptually, it may be more appropriate to think of ourselves as an ecosystem rather than a single genetic template."

Researchers have suspected that the human brain may harbor microchimeric cells, which are present in other human organs, and previous studies in mice have shown that such foreign cells can break through the blood-brain barrier. But the study, led by Lee Nelson of the Fred Hutchinson Cancer Research Center in Seattle, revealed that microchimeric cells could not only migrate to the brain, but do so frequently: more than 60 percent of autopsied brains contained DNA from another individual.

Microchimerism most commonly arises during pregnancy when cells from a fetus pass through the placenta and into the mother's body-and vice versa. The foreign cells can then migrate to various tissues and set up chimeric cell lines, which has raised many unanswered question about immune disorders and other links to disease risks. Other studies have found that fetuses can also acquire microchimeric cells from a twin or even from an older sibling, as some fetal cells linger in the uterus. In rare cases, microchimerism can occur from blood transfusions in immunocompromised patients.

To quantify microchimerism in the brain, Nelson and colleagues selectively looked for a gene found on the Y chromosome in brain sections from 59 female cadavers. It's not the case that this can only happen with male fetuses or siblings, Nelson explained, it's just technically easier to identify DNA from males in female subjects. In total, the researchers found that 37 women harbored such foreign genes in their brains. They also found evidence of cells in the brain, suggesting that microchimeric cells can and do cross the blood-brain barrier.

Also during the study, the team compared the level of microchimerism between female subjects that were healthy at the time of death to those that suffered from Alzheimer's disease. Women who have been pregnant are known to be at a higher risk of developing the disease, and the researchers hypothesized that this might result from having more microchimeric cells in their brains. But in fact, they found the opposite: women with Alzheimer's had lower amounts of microchimeric cells than the healthy group.

"It's a correlation," said William Burlingham of the University of Wisconsin, who specializes in transplant surgery and studies microchimerism in the context of immune tolerance, and was not involved with the study. "But, like a lot of things in the field of microchimerism, you don't know exactly what the correlation means yet."

Next, Nelson and her lab plan to looks for microchimerism in fetal brains and investigate whether or not microchimeric cells establish functional cells in the brain.

"The study raises a lot of questions," Burlingham said.
2012-09-27 02:10:37 PM  
Well...i guess this explains gay people.
2012-09-27 04:11:09 PM  

mr lawson: Well...i guess this explains gay people.
2012-09-27 10:42:44 PM  
I wonder if this has anything to do with me knowing the exact moment my mother died even though I was miles away?
2012-09-28 12:32:05 AM  

mr lawson: Well...i guess this explains gay people.

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