期刊
TOXICOLOGY
卷 415, 期 -, 页码 49-55出版社
ELSEVIER IRELAND LTD
DOI: 10.1016/j.tox.2019.01.008
关键词
DEHP; In utero exposure; Malnutrition; Feeding behavior; Glucose; Leptin
资金
- Japan Society for the Promotion of Science [226486, 24890085]
- Food Safety Commission of Japan [1002]
- NATIONAL CANCER INSTITUTE [ZIABC005562] Funding Source: NIH RePORTER
- Grants-in-Aid for Scientific Research [24890085] Funding Source: KAKEN
Exposure of pregnant mice to di(2-ethylhexyl)phthalate (DEHP) induces maternal lipid malnutrition and decreases the number of live fetuses/pups. In this study, we aimed to clarify the relationship between maternal lipid malnutrition and the nutritional status of the neonatal, lactational, and adult offspring, as well as the role of peroxisome proliferator-activated receptor alpha (PPAR alpha) in these relationships. Sv/129 wild-type (mPPARA), Ppara-null, and PPAR alpha-humanized (hPPARA) mice were fed diets containing 0, 0.01, 0.05, or 0.1% DEHP in utero and/or during the lactational stage. The male offspring were killed on postnatal day 2 or 21, or after 11 weeks. Exposure to either 0.05% or 0.1% DEHP during both the in utero and lactational periods decreased serum glucose concentrations in 2-day-old mPPARA offspring. These dosages also decreased both serum and plasma leptin levels in both 2- and 21-day-old mPPARA offspring. In contrast, exposure to DEHP only during the lactational period did not decrease leptin levels, suggesting the importance of in utero exposure to DEHP. Exposure to 0.05% DEHP during the in utero and lactational periods also increased food consumption after weaning in both mPPARA and hPPARA mice; this was not observed in Ppara-null offspring. In conclusion, in utero exposure to DEHP induces neonatal serum glucose malnutrition via PPAR alpha. DEHP also decreases serum and plasma leptin concentrations in offspring during the neonatal and weaning periods, in association with PPARa, which presumably results in increased of food consumption after weaning.
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