The impact of murine strain and sex on postnatal development after maternal dietary restriction during pregnancy

J Physiol. 2007 Jun 1;581(Pt 2):873-81. doi: 10.1113/jphysiol.2006.126573. Epub 2007 Mar 8.

Abstract

The objective of this study was to characterize offspring responses to maternal dietary restriction (DR) in two phylogenetically distant strains of mice: A/J and C57BL/6J (B6). Pregnant mice were fed 100% or 70% of ad libitum between 6.5 and 17.5 days (d) gestation. Offspring were fed 100% ad libitum postweaning. All comparisons were made to strain and sex matched controls. Male DR-B6 offspring initially grew slower than controls; however, by 77 d and 182 d they were significantly heavier (P<0.05). Further, they had an increase percentage fat mass (+70%, P<0.01) by 182 d and were glucose intolerant at both 80 d (P<0.001) and 186 d (P<0.05). In contrast, weight, %Fat mass and glucose tolerance in DR-A/J males during postnatal life were not different from controls. Female DR-B6 mice showed catch-up growth during the first 77 d of life; however, their weight, %Fat mass and glucose tolerance were not different from controls at 80 d and 186 d. Although female DR-A/J were heavier than controls at 182 d (P<0.05), their %Fat mass and glucose tolerance were not different from controls at 182 d and 186 d. The observed strain and sex differences offer a unique opportunity to begin to define gene-environment interactions that contribute to developmental origins of health and disease.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Blood Glucose / genetics
  • Body Composition / genetics
  • Body Weight / genetics
  • Embryonic Development / genetics*
  • Female
  • Food Deprivation*
  • Genotype
  • Glucose Intolerance / genetics*
  • Glucose Intolerance / physiopathology
  • Male
  • Mice
  • Mice, Inbred C57BL
  • Models, Animal
  • Obesity / genetics*
  • Obesity / physiopathology
  • Phenotype
  • Pregnancy
  • Prenatal Nutritional Physiological Phenomena*
  • Sex Factors
  • Species Specificity
  • Time Factors

Substances

  • Blood Glucose