AI Article Synopsis
- Pregnant rats on high fat diets during different gestation weeks showed that diet timing affects fetal growth and insulin sensitivity.
- Fetuses exposed during the last week of gestation had increased body weight, higher blood sugar levels, and signs of insulin resistance compared to others.
- The study found changes in fatty acid profiles, with a notable increase in specific omega-6 fatty acids linked to metabolic issues in the fetuses.
Article Abstract
Pregnant rats were fed a high fat diet (HFD) for the first (HF1), second (HF2), third (HF3) or all three weeks (HFG) of gestation. Maintenance on a HFD during specific periods of gestation was hypothesized to alter fetal glycemia, insulinemia, induce insulin resistance; and alter fetal plasma and hepatic fatty acid (FA) profiles. At day 20 of gestation, fetal plasma and hepatic FA profiles were determined by gas chromatography; body weight, fasting glycemia, insulinemia and the Homeostasis Model Assessment (HOMA-insulin resistance) were also determined. HF3 fetuses were heaviest concomitant with elevated glycemia and insulin resistance (p < 0.05). HFG fetuses had elevated plasma linoleic (18:2 n-6) and arachidonic (20:4 n-6) acid proportions (p < 0.05). In the liver, HF3 fetuses displayed elevated linoleic, eicosatrienoic (20:3 n-6) and arachidonic acid proportions (p < 0.05). HFG fetuses had reduced hepatic docosatrienoic acid (22:5 n-3) proportions (p < 0.05). High fat maintenance during the final week of fetal life enhances hepatic omega-6 FA profiles in fetuses concomitant with hyperglycemia and insulin resistance thereby presenting a metabolically compromised phenotype.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4586532 | PMC |
| http://dx.doi.org/10.3390/nu7095337 | DOI Listing |
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