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Medicine and Health Sciences

Illawarra Health and Medical Research Institute

Series

2013

High

Articles 1 - 6 of 6

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Dha Prevents Altered 5-Ht1a, 5-Ht2a, Cb1 And Gabaa Receptor Binding Densities In The Brain Of Male Rats Fed A High-Saturated-Fat Diet, Yinghua Yu, Yizhen Wu, Craig Patch, Zhixiang Wu, Alexander Szabo, Duo Li, Xu-Feng Huang Jan 2013

Dha Prevents Altered 5-Ht1a, 5-Ht2a, Cb1 And Gabaa Receptor Binding Densities In The Brain Of Male Rats Fed A High-Saturated-Fat Diet, Yinghua Yu, Yizhen Wu, Craig Patch, Zhixiang Wu, Alexander Szabo, Duo Li, Xu-Feng Huang

Illawarra Health and Medical Research Institute

Low levels of docosahexaenoic acid (DHA) have been linked to a number of mental illnesses such as memory loss, depression and schizophrenia. While supplementation of DHA is beneficial in improving memory and cognition, the influence of dietary fats on the neurotransmitters and receptors involved in cognitive function is still not known. The aim of this study was to investigate serotonin receptor (5-HT1A and 5-HT2A), cannabinoid receptor (CB1) and gamma-aminobutyric acid type A (GABAA) receptor binding densities in the brain of male rats fed a high-saturated-fat (HF) diet, as well as the effect of DHA supplementation …


Mouse Strain-Dependent Variation In Obesity And Glucose Homeostasis In Response To High-Fat Feeding, M K. Montgomery, N L. Hallahan, S H. Brown, M Liu, T W. Mitchell, G J. Cooney, N Turner Jan 2013

Mouse Strain-Dependent Variation In Obesity And Glucose Homeostasis In Response To High-Fat Feeding, M K. Montgomery, N L. Hallahan, S H. Brown, M Liu, T W. Mitchell, G J. Cooney, N Turner

Illawarra Health and Medical Research Institute

Aims/hypothesis: Metabolic disorders are commonly investigated using knockout and transgenic mouse models. A variety of mouse strains have been used for this purpose. However, mouse strains can differ in their inherent propensities to develop metabolic disease, which may affect the experimental outcomes of metabolic studies. We have investigated strain-dependent differences in the susceptibility to diet-induced obesity and insulin resistance in five commonly used inbred mouse strains (C57BL/6J, 129X1/SvJ, BALB/c, DBA/2 and FVB/N). Methods: Mice were fed either a low-fat or a high-fat diet (HFD) for 8 weeks. Whole-body energy expenditure and body composition were then determined. Tissues were used to …


Cerium Oxide Nanoparticles: Influence Of The High-Z Component Revealed On Radioresistant 9l Cell Survival Under X-Ray Irradiation, Adam Briggs, Stephanie Corde, Sianne Oktaria, Ryan Brown, Anatoly B. Rosenfeld, Michael Lerch, Konstantin Konstantinov, Moeava Tehei Jan 2013

Cerium Oxide Nanoparticles: Influence Of The High-Z Component Revealed On Radioresistant 9l Cell Survival Under X-Ray Irradiation, Adam Briggs, Stephanie Corde, Sianne Oktaria, Ryan Brown, Anatoly B. Rosenfeld, Michael Lerch, Konstantin Konstantinov, Moeava Tehei

Illawarra Health and Medical Research Institute

This article pioneers a study into the influence of the high-Z component of nanoparticles on the efficacy of radioprotection some nanoparticles offer to exposed cells irradiated with X-rays. We reveal a significant decrease in the radioprotection efficacy for cells exposed to CeO2 nanoparticles and irradiated with 10 MV and 150 kVp X-rays. In addition, analysis of the 150 kVp survival curve data indicates a change in radiation quality, becoming more lethal for irradiated cells exposed to CeO2 nanoparticles. We attribute the change in efficacy to an increase in high linear energy transfer Auger electron production at 150 kVp which counterbalances …


High-Dose Mushroom Increases Hepatic Accumulation Of Triacylglycerol In Rats Fed With High-Fat Diet, D Handayani, B Meyer, J Chen, S Brown, T Mitchell, Xu-Feng Huang Jan 2013

High-Dose Mushroom Increases Hepatic Accumulation Of Triacylglycerol In Rats Fed With High-Fat Diet, D Handayani, B Meyer, J Chen, S Brown, T Mitchell, Xu-Feng Huang

Illawarra Health and Medical Research Institute

Abstract of poster that presented at IUNS 20th International congress of Nutrition, Granada, Spain, September 15-20, 2013.


An Improved High-Throughput Lipid Extraction Method For The Analysis Of Human Brain Lipids, Sarah K. Abbott, Andrew M. Jenner, Todd W. Mitchell, Simon H. Brown, Glenda M. Halliday, Brett Garner Jan 2013

An Improved High-Throughput Lipid Extraction Method For The Analysis Of Human Brain Lipids, Sarah K. Abbott, Andrew M. Jenner, Todd W. Mitchell, Simon H. Brown, Glenda M. Halliday, Brett Garner

Illawarra Health and Medical Research Institute

We have developed a protocol suitable for high-throughput lipidomic analysis of human brain samples. The traditional Folch extraction (using chloroform and glass-glass homogenization) was compared to a high-throughput method combining methyl-tert-butyl ether (MTBE) extraction with mechanical homogenization utilizing ceramic beads. This high-throughput method significantly reduced sample handling time and increased efficiency compared to glass-glass homogenizing. Furthermore, replacing chloroform with MTBE is safer (less carcinogenic/toxic), with lipids dissolving in the upper phase, allowing for easier pipetting and the potential for automation (i.e., robotics). Both methods were applied to the analysis of human occipital cortex. Lipid species (including ceramides, sphingomyelins, choline glycerophospholipids, …


Reduction Of Histamine H1 Receptor Binding Induced By High-Fat Diet Can Be Prevented By Dha And Dietary Fiber In Specific Brain Areas Of Male Rats, Zhixiang Wu, Yinghua Yu, Yizhen Wu, Craig S. Patch, Alexander Szabo, Xu-Feng Huang Jan 2013

Reduction Of Histamine H1 Receptor Binding Induced By High-Fat Diet Can Be Prevented By Dha And Dietary Fiber In Specific Brain Areas Of Male Rats, Zhixiang Wu, Yinghua Yu, Yizhen Wu, Craig S. Patch, Alexander Szabo, Xu-Feng Huang

Illawarra Health and Medical Research Institute

High-fat (HF) diet and obesity are risk factors for a number of mental health problems including depression, cognitive dysfunction, dementia, and neurodegenerative diseases. Histamine H1 receptors (H1Rs) are involved in many of these conditions. This study examined H1R receptor binding density in the brain of male rats fed a high-saturated fat (HF) diet, as well as the effect of docosahexaenoic acid (DHA), galacto-oligosaccharide (GOS) and resistant starch (RS) supplementation of HF diet. Alterations of H1R expression in the post-mortem rat brain were detected by [ 3H]-pyrilamine binding autoradiography. We found that HF diet significantly decreased H1R binding densities in the …