Effingham Daily News, Effingham, IL

Features

October 1, 2012

Bearing sons can alter your mind

Giving a whole new meaning to "pregnancy brain," a new study shows that male DNA-likely left over from pregnancy with a male fetus-can persist in a woman's brain throughout her life. Although the biological impact of this foreign DNA is unclear, the study also found that women with more male DNA in their brains were less likely to have suffered from Alzheimer's disease-hinting that the male DNA could help protect the mothers from the disease, the researchers say.

During mammalian pregnancy, the mother and fetus exchange DNA and cells. Previous work has shown that fetal cells can linger in the mother's blood and bone for decades, a condition researchers call fetal microchimerism. The lingering of the fetal DNA, research suggests, may be a mixed blessing for a mom: The cells may benefit the mother's health-by promoting tissue repair and improving the immune system-but may also cause adverse effects, such as autoimmune reactions.

One question is how leftover fetal cells affect the brain. Researchers have shown that fetal microchimerism occurs in mouse brains, but they had not shown this in humans. So a team led by autoimmunity researcher and rheumatologist J. Lee Nelson of the Fred Hutchinson Cancer Research Center in Seattle, Washington, took samples from autopsied brains of 59 women who died between the ages of 32 and 101. By testing for a gene specific to the Y chromosome, they found evidence of male DNA in the brains of 63% of the women. (The researchers did not have the history of the women's pregnancies.) The male DNA was scattered across multiple brain regions, the team reports online Wednesday in PLoS ONE.

Because some studies have suggested that the risk of Alzheimer's disease (AD) increases with an increasing number of pregnancies, the team also examined the brains for signs of the disease, allowing them to determine whether AD correlated with the observed microchimerism. Of the 59 women, 33 had AD-but contrary to the team's expectation, the women with AD had significantly less male DNA in their brains than did the 26 women who did not have AD.

Text Only
Features
  • Study: Kids gain weight more quickly over summer break

    Any parent or teacher can tell you that schoolchildren tend to slip back a bit academically over the long summer break. But now a Harvard University study has come up with troubling indications that they also gain weight more quickly during those months when, traditionally, we hope they're outdoors much of the time, enjoying the summer sun.

    June 16, 2014

  • 20140614-AMX-RETIRE-GENX14.jpg Lean retirement looms for Generation X

    When their working years end, Gen-Xers might have to live on just half of their pre-retirement income, compared with 60 percent for the Baby Boom generation, Pew said last year.

    June 16, 2014 1 Photo

  • 20140612-AMX-FATHERS-CARDS123.jpg Father's Day cards make subjects the targets of jokes

    There's a good chance if you receive — or give — a Father's Day card this weekend, Dad will be portrayed as a flatulent, beer-obsessed, tool-challenged buffoon who would rather hog the remote, go fishing or play golf than be with the kids.

    June 15, 2014 3 Photos

  • Texting while driving is latest teen risk as smoking declines

    While smoking among American teens has fallen to a 22-year low, most adolescents admit to engaging in a new type of risky behavior: texting while driving.

    June 15, 2014

  • $15 minimum wage puts Seattle in uncharted waters

    Depending on which pundit is nattering away, this means Seattle is either going to fall off the map and become a "Mad Max"-style economic wasteland or transform into an egalitarian utopia that inspires sweeping pro-labor activism nationwide.

    June 7, 2014

  • 2010-Winter-Olympic-Games-001.jpg Nobody wants to host the Winter Olympics

    If we end up watching slopestyle from the Central Asia steppes in 2022, it will likely be because it's becoming clear that nobody in Europe wants to host these Olympics anymore. Publics may finally be getting wise to the fact that the long-term economic benefits of hosting mega-events like the Olympics or the World Cup are usually negligible at best.

    May 27, 2014 1 Photo

  • airplanes-work-1.jpg Airfare honesty? It may be an oxymoron

    The issue of fare advertising has taken on a renewed sense of urgency now that Congress is considering removing the Transportation Department's full-fare advertising rule, which requires airlines and ticket sellers to display a price that you can actually book.

    May 27, 2014 1 Photo

  • Study: Both men and women feel less stress at work than at home

    In a newly released study in the Journal of Science and Medicine, researchers carefully examined the levels of the stress hormone, cortisol, of a variety of workers throughout the day. The data clearly showed that both men and women are significantly less stressed out at work than they are at home.
     And the women they studied said they were happier at work. While the men said they felt happier at home.

    May 27, 2014

  • Five myths about caffeine

    But how much do you know about the drug - and yes, it is a drug - you're consuming? Before downing one more gulp of your favorite stimulant, let go of some persistent, caffeinated myths.

    May 27, 2014

  • Making the most of longer school days

    Research shows that extra time doesn't help unless it is well used. With that in mind, the Boston-based National Center on Time and Learning has just released recommendations on the best way to construct a longer school day.

    May 26, 2014

AP Video
Parade
Magazine

Click HERE to read all your Parade favorites including Hollywood Wire, Celebrity interviews and photo galleries, Food recipes and cooking tips, Games and lots more.