涩里番

More than half of people who become pregnant are overweight or obese at the time of conception, and obesity during pregnancy is associated with progeny who develop metabolic syndrome later in life.

Studies of humans and mammalian animal models have shown, for example, that high-fat diets during pregnancy and while nursing result in offspring more likely to develop nonalcoholic fatty liver disease and to have altered bile acid homeostasis.

Scientists at the Washington University School of Medicine in St. Louis recently undertook a study to learn more about how maternal obesity might influence the development of cholestasis, a liver disease for which therapies are limited.

In cholestasis, bile cannot reach the duodenum, the first portion of the small intestine, where it is supposed to facilitate food digestion. The disease can be brought on by several factors, including duct obstructions or narrowing, toxic compounds, infection and inflammation, disturbance of intestinal microbiota, and genetic abnormalities.

In , published in the Journal of Lipid Research, Michael D. Thompson and collaborators at Washington University fed female mice conventional chow or a high-fat, high-sucrose diet and bred them with lean males.

They fed the offspring DDC, which is short for 3,5-diethoxycarbonyl-1,4-dihydrocollidine, for two weeks to induce cholestasis. After this feeding period, the offspring ate conventional chow for 10 more days. They found that offspring from females on the high-fat, high-sucrose diet had increased fine branching of the bile duct and enhanced fibrotic response to DDC treatment and delayed recovery times from it.

Earlier this year, the team changes to offspring microbiome after maternal consumption of high-fat, high-sucrose chow, so they decided to feed antibiotic-treated mice cecal contents from the offspring that had been fed conventional chow or high-fat, high-sucrose, followed by DDC for two weeks. They found that cholestatic liver injury is transmissible in these mice models, further supporting the role of the microbiome in this disease.

For those reasons and others, a lot of research has been done and continues to this day on the effects of maternal diet on offspring.

Davidson et al./JLR

The term “cholestasis” is derived from the Greek phrase meaning “bile halting.” The graphic above shows how the researchers bred, fed and completed cecal microbiome transplantation. HF/HS is short for high-fat, high-sucrose, and DDC is short for 3,5-diethoxycarbonyl-1,4-dihydrocollidine.