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Title: A high multivitamin diet fed to Wistar rat dams during pregnancy increases maternal weight gain later in life and alters homeostatic, hedonic and peripheral regulatory systems of energy balance. Author: Pannia E, Cho CE, Kubant R, Sánchez-Hernández D, Huot PS, Chatterjee D, Fleming A, Anderson GH. Journal: Behav Brain Res; 2015 Feb 01; 278():1-11. PubMed ID: 25264184. Abstract: High multivitamin (10-fold, HV) and high folic acid (Fol) diets fed to pregnant Wistar rats increase body weight and characteristics of the metabolic syndrome in their offspring. Our objective was to determine the effects of a HV maternal diet on dams and whether methyl vitamins contribute to these effects. Pregnant Wistar rats were fed AIN-93G diets containing either (1) recommended multivitamins (RV, control), (2) HV, (3) HV with recommended Fol (HVRF; 1-fold Fol), or (4) RV with high methyl group vitamins (HMethyl; 10-fold Fol, vitamin B12 and B6). All groups were fed a RV diet during lactation until weaning and a RV high fat (HF; 60% fat) diet for 16 weeks post-weaning. The HV, HVRF and HMethyl diet fed dams gained 45% more weight from 2 to 15 weeks post-weaning and their weight gain (WG) was positively associated with cumulative post-weaning food intake (FI). However, only HV dams had a reduced preference for a sucrose solution, lower mesolimbic dopamine (DA) turnover in the nucleus accumbens (NAc), and higher expression of several genes involved in FI regulation in the arcuate nucleus of the hypothalamus (ARC). Energy conserving peroxisome proliferator-activated receptor (Ppar)-γ in adipose and -α in liver was also greater in these dams consistent with their WG. In conclusion, HV, HVRF and HMethyl maternal diets exacerbate maternal WG when dams are exposed to a HF diet post-weaning. However, the diets differed in their effects on central and peripheral regulatory systems of energy balance.[Abstract] [Full Text] [Related] [New Search]