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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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R protein; AbPP-Ab: amyloid-b peptide; AChE: acetylcholinesterase; AD: Alzheimer's disease; CER: Ceramide synthase; ChAT: choline acetyltransferase; ELISA: enzyme-linked immunosorbant assay; GFAP: glial fibrillary acidic protein; GSK-3b: glycogen synthase kinase-3b; H E: hematoxylin and eosin; HFD: high fat diet; HNE: 4-hydroxy-2-nonenal; HRP: horseradish peroxidase; i.p.: intraperitoneal; IGF: In
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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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Urs), rats were sacrificed by i.p. injection of pentobarbital (120 mg/kg). Blood and cerebella were harvested immediately. Blood or serum was used to measure glucose, insulin, cholesterol, triglycerides, and free fatty acid levels, as previously described [45,46]. Cerebella were harvested for histopathological, biochemical, and molecular studies. For histopathology, tissue samples were immersion f
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Could serve as biomarkers of insulin-resistance mediated neurodegeneration. Finally, the findings suggest that our insulin resistance disease epidemics are linked to sub-mutagenicTong et al. BMC Endocrine Disorders 2010, 10:4 http://www.biomedcentral.com/1472-6823/10/Page 13 ofexposures to nitrosamines and related compounds, combined with chronic consumption of high fat content foods, indicating t
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Changes characterized by focal loss of Purkinje neurons (Fig. 1-A3). NDEA exposure, with or without chronic HFD feeding, resulted in loss of Purkinje cells (Figs. 1-A2, 1-A4) and variable thinning of the granule cell layer. Immunohistochemical staining demonstrated similar levels and distributions of GFAP immunoreactivity in cells distributed in the granule layer of control (Fig 1-B1) and HFD-fed
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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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Ation with impairments in insulin/IGF signaling mechanisms, and deficits in cholinergic and neuronal cytoskeletal gene and protein expression in brain, whereas chronic HFD feeding alone produces more restrictive deficits in insulin/IGF signaling mechanisms with reduced ChAT expression and increased oxidative stress. The combined exposures caused overlapping structural and molecular abnormalities t

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