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High Fat Diet in Pregnant Mothers Increases Risk For Liver Disease in Offspring
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High Fat Diet in Pregnant Mothers Increases Risk For Liver Disease in Offspring

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Highlights
  • Nonalcoholic fatty liver disease is linked to obesity but not all obese people develop non alcoholic fatty liver disease.
  • Maternal exposures to high fat diet impact obesity-related disease such as nonalcoholic fatty liver disease in the offspring.
  • The findings could have implications for people who are not obese themselves but who had obese mothers.

Exposure to a high-fat diet in the womb and immediately after birth may change the liver in a way that promotes more rapid progression of nonalcoholic fatty liver disease later in life.

Nonalcoholic fatty liver disease, a condition where fat builds up in the liver, is now the most common chronic liver disease diagnosed in adults and children. Although the disease is linked with obesity, scientists don't fully understand why some people develop it and others don't.

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High Fat Diet in Pregnant Mothers Increases Risk For Liver Disease in Offspring

Michael Thompson, MD, PhD, pediatric endocrinology fellow said, "Complications of obesity are a significant cost burden for the medical system, especially given the prevalence of obesity."

"Understanding how maternal exposures impact obesity-related disease such as nonalcoholic fatty liver disease will allow us to develop lower cost preventative therapies to utilize up front rather than awaiting complications down the road."
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In the new study, the researchers found that the offspring of pregnant mice that consumed a high-fat diet developed liver fibrosis, a type of tissue scarring that is a sign that more serious disease will develop.

The offspring weaned to a low-fat diet after maternal high-fat diet exposure developed fibrosis in adulthood. The livers of these mice also had signs of fat accumulation and inflammation.

The findings showed that developmental exposure to a high-fat diet can produce changes in the liver that last into adulthood, even with consumption of a low-fat diet after birth. These findings could have implications for people who are not obese themselves but who had obese mothers.

Additional analysis showed that bile acid levels and genes involved in bile-acid regulation were changed in the offspring exposed to the maternal high-fat diet. This finding suggests that the offspring may have a liver disease called cholestasis, which occurs when the normal flow of bile is impaired.

"If human offspring from obese mothers have a similar risk for developing fibrosis as we see in mice, we may be able to predict who is going to develop more serious disease," said Thompson.

"Knowing who is most at risk for more serious disease will guide us on which patients should be treated more aggressively. Furthermore, understanding the biological mechanisms involved in this increased risk could lead to preventative therapies."

The researchers are now working to further understand the mechanisms involved in the risk for disease progression. They also plan to use their mouse model of developmental high-fat diet exposure to evaluate preventative therapies that could be administered during pregnancy or to the offspring.

Reference
  1. Michael Thompson et al., Maternal high-fat diet may increase offspring risk for liver disease, Experimental Biology 2017.


Source: Medindia

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