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Urces. Therefore, we entertained the hypothesis that either limited or chronic low-level exposures to nitrosamines account for the observed shifts in morbidity and mortality from insulin resistance diseases. Moreover, given the clear role of high dietary fat intake as a mediator of obesity, T2DM, or cognitive impairment, we proposed that the combined effects of HFD and NDEA exposure may act additi
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Ative stress with lipid peroxidation, as occur in AD. The finding that chronic HFD feeding did not significantly alter tau or AbPP expression also supports our previous conclusion that HFD feeding contributes to, but is not sufficient to cause AD-type neurodegeneration [45,46]. The combined effect of early, limited NDEA exposure plus chronic HFD feeding significantly reduced insulin and ChAT mRNA
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Xidative stress and neurodegeneration. Cerebellar protein homogenates were used to measure (A) GSK-3b; (B) phospho (p)-GSK-3b; (C) GFAP; (D) GAPDH; (E) HNE; (F) malondialdehyde, MDA; (G) Nitrotyrosine, N-TYR; or (H) b-Actin; by direct binding ELISA. Immunoreactivity was detected with HRP-conjugated secondary antibody and Amplex Red soluble fluorophor. Fluorescence light units (FLU) were measured (
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Ration have soared over the past several decades, suggesting that exposures rather than genetics dictate their etiologies. Our over-arching hypothesis is that shifts in lifestyles and economics have led us to chronically consume excess fat, and get exposed to agents that cause insulin resistance. Consideration given to potential pathogenic agents was focused by the experimental evidence showing th
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Tylcholine receptor binding in the cerebellum and brainstem [103]. In previous studies using a mouse model of dietinduced obesity [45,46], we showed that chronic HFD feeding causes brain insulin resistance [46]. Similarly, herein we demonstrated that the HFD-fed rats had reduced levels of brain IRS-1 mRNA, which would have been sufficient to cause brain insulin resistance due to impaired transmiss
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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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N in ways that could cause insulin/IGF resistance in the brain, their specific effects were not identical. The main effect of NDEA, with or without HFD feeding, was to reduce mRNA levels of insulin receptor, IGF-2 receptor, and IRS-2, which would have impaired signaling at the receptor level, and downstream through IRS-2, one of main docking proteins responsible for transmitting survival, growth,

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