PMID:
Br J Nutr. 2020 Mar 3:1-22. Epub 2020 Mar 3. PMID: 32122411
Abstract Title:
Dietary substitution of saturated with monounsaturated fatty acids within high-fat diets attenuates hyperinsulinemia and pancreatic islet dysfunction.
Abstract:
Preliminary evidence suggested that high-fat diets (HFD) enriched with saturated fatty acids (SFA) but not monounsaturated fatty acids (MUFA), promoted hyperinsulinemia and pancreatic hypertrophy with insulin resistance. The objective of this study was to determine whether substitution of dietary MUFA within a HFD could attenuate the progression of pancreatic islet dysfunction seen with prolonged SFA-HFD. For 32 weeks, C57BL/6J mice were fed either: 1) low fat diet, 2) SFA-HFD, or 3) SFA-HFD for 16 weeks then switched to MUFA-HFD for 16 weeks (SFA-to-MUFA-HFD). Fasting insulin was assessed throughout the study; islets were isolated following the intervention. Substituting SFA-to-MUFA-HFD prevented the progression of hyperinsulinemia observed in SFA-HFD mice (p
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