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P. Chronic HFD feeding aloneTable 3 Effects of High Fat Diet and NDEA Exposure on Biomarkers of Insulin and IGF Resistance in the CerebellummRNA AbPP Tau AChE ChAT Insulin IGF-1 IGF-2 Insulin R IGF-1R IGF-2R IRS-1 IRS-2 IRS-4 LFD+VEH 7.007 ?0.828 12.230 ?1.098 2.829 ?0.178 0.701 ?0.045 0.754 ?0.048 0.957 ?0.119 12.000 ?1.800 17.090 ?1.547 5.031 ?0.525 5.677 ?0.548 5.559 ?0.411 7.701 ?0.509 0.135 ?
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F HNE were similar in the HFD+VEH and HFD+NDEA groups, and both were significantly higher than in the LFD+VEH and LFD +NDEA groups (P
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We measured gene expression corresponding to insulin and IGF polypeptides and receptors, and insulin receptor substrates (IRSs) that transmit signals required for growth, survival, energy metabolism, and neuronalELISAs were used to measure sustained effects of NDEA treatment and/or chronic HFD feeding on Tau, phospho-Tau, AbPP, AbPP-Ab, ChAT, and AChE levels in brain tissue. Early limited exposure
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N exist inTable 2 High Fat Diet Feeding and NDEA Treatment Cause Type 2 Diabetes MellitusAssay Body Wt (g) Glucose (mg/dL) Insulin (ng/ml) Leptin Adiponectin Triglyceride (mg/ml) Free Fatty Acids (mM/mg prot) Cholesterol (mg/ml) LFD+VEH 265.100 ?14.050 111.5 ?1.66 0.0611 ?0.017 4.649 ?0.789 20864 ?1454 0.399 ?0.028 0.150 ?0.003 0.943 ?0.024 LFD+NDEA 266.600 ?19.970 128.8* ?4.31 0.163* ?0.038 4.775
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F HNE were similar in the HFD+VEH and HFD+NDEA groups, and both were significantly higher than in the LFD+VEH and LFD +NDEA groups (P
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In brain [85-88]; 2) cause cytotoxicity and insulin resistance [83,88]; and 3) are increased in brains with neurodegeneration [85,89-91]. We measured mRNA levels of ceramide synthases (CER), UDP glucose ceramide glycosyltransferase (UGCG), serine palmitoyltransferase (SPTLC), and sphingomyelin phosphodiesterases (SMPD), due to their demonstrated relevance to neurodegeneration [45,83]. HFD feeding