Effects of maternal LPS exposure during pregnancy on metabolic phenotypes in female offspring

PLoS One. 2014 Dec 5;9(12):e114780. doi: 10.1371/journal.pone.0114780. eCollection 2014.

Abstract

It is increasingly recognized that intra-uterine growth restriction (IUGR) is associated with an increased risk of metabolic disorders in late life. Previous studies showed that mice exposed to LPS in late gestation induced fetal IUGR. The present study investigated the effects of maternal LPS exposure during pregnancy on metabolic phenotypes in female adult offspring. Pregnant mice were intraperitoneally injected with LPS (50 µg/kg) daily from gestational day (GD)15 to GD17. After lactation, female pups were fed with standard-chow diets (SD) or high-fat diets (HFD). Glucose tolerance test (GTT) and insulin tolerance test (ITT) were assessed 8 and 12 weeks after diet intervention. Hepatic triglyceride content was examined 12 weeks after diet intervention. As expected, maternal LPS exposure during pregnancy resulted in fetal IUGR. Although there was an increasing trend on fat mass in female offspring whose dams were exposed to LPS during pregnancy, maternal LPS exposure during pregnancy did not elevate the levels of fasting blood glucose and serum insulin and hepatic triglyceride content in female adult offspring. Moreover, maternal LPS exposure during pregnancy did not alter insulin sensitivity in adipose tissue and liver in female adult offspring. Further analysis showed that maternal LPS exposure during pregnancy did not exacerbate HFD-induced glucose tolerance and insulin resistance in female adult offspring. In addition, maternal LPS exposure during pregnancy did not aggravate HFD-induced elevation of hepatic triglyceride content in female adult offspring. In conclusion, LPS-induced IUGR does not alter metabolic phenotypes in adulthood.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adipose Tissue / metabolism
  • Animals
  • Body Weight
  • Diet, High-Fat / adverse effects
  • Female
  • Fetal Growth Retardation / metabolism*
  • Insulin / blood
  • Insulin / metabolism
  • Insulin Resistance*
  • Lipid Metabolism
  • Lipopolysaccharides / toxicity*
  • Liver / metabolism
  • Liver / pathology
  • Male
  • Maternal Exposure*
  • Metabolic Diseases / etiology
  • Metabolic Diseases / metabolism
  • Mice, Inbred ICR
  • Obesity / metabolism
  • Pregnancy
  • Prenatal Exposure Delayed Effects
  • Triglycerides / metabolism

Substances

  • Insulin
  • Lipopolysaccharides
  • Triglycerides

Grants and funding

Funding was provided by National Natural Science Foundation of China (81172711, 81100449). The funders contributed to study design, data collection and analysis, decision to publish, or preparation of the manuscript.