Keyword: Metabolism and health

Lindsay Robinson

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I am interested in understanding the physiological roles and regulation of adipose tissue and skeletal muscle-derived cytokines in mediating metabolic processes in the body. I am particularly interested in the mechanisms by which dietary factors and/or exercise modulate various cytokines and inflammatory mediators implicated in insulin resistance, a key characteristic of obesity and type 2 diabetes. My current research projects are:
1) Regulation of adipose tissue-derived cytokines in integrative metabolism.
2) Effect of n-3 and n-6 fatty acids in the presence and absence of LPS on adipocyte secretory factors and underlying mechanisms.
3) Effect of dietary fatty acids on pro-inflammatory markers in an in vitro murine adipocyte macrophage co-culture model.

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David Wright

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Since changes in how the body metabolizes glucose are a hallmark of Type 2 diabetes, understanding how the function and metabolism of adipose tissue are regulated will be crucial for understanding diabetes itself. My students and I look at how exercise and nutritional interventions affect gene expression in adipose tissue, and, in turn, how these changes can affect both adipose tissue metabolism and whole-body glucose metabolism. One of the applications of my research is to potentially develop new, non-drug-based approaches that can be used to prevent and/or reverse Type 2 diabetes.

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Marica Bakovic

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My background is in molecular and cell biology of lipid metabolism. Currently, my students and I work on the regulation of membrane phospholipids, fatty acids, and methyl-group donors. More specifically, we look at regulation of genes involved in choline transport and phospholipid metabolism; nutrient transporters and kinetics of membrane transport; molecular and cell biology of lipids; the effect of nutrients on protein synthesis and gene expression; and, nutritional genomics (nutrigenomics) of risk factors for cardiovascular disease and insulin resistance.

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Dave Dyck

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My interests lie in the regulation of fat and carbohydrate metabolism in skeletal muscle, with a particular emphasis on the dysregulation that occurs in obesity and diabetes. Several cytokines released from skeletal muscle, including leptin and adiponectin, are known to significantly affect insulin response in peripheral tissues such as muscle. My research has focused on the effects of these adipokines on muscle lipid and carbohydrate metabolism, and particularly, how the muscle becomes resistant to their effects in obese models and with high fat feeding. The interaction of diet and exercise is also a point of interest in terms of the muscle's response to various hormones including insulin, leptin and adiponectin.

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Graham Holloway

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My research is primarily focused on understanding the regulation of mitochondrial bioenergetics, with a particular interest in studying fatty acid oxidation (breakdown of fat yielding energy) in skeletal and cardiac muscle. We also study human exercise performance as well as type 2 diabetes, heart failure, diabetic cardiomyopathy and various neuropathologies, all conditions that have been affiliated with alterations in mitochondria as a key event in the progression and/or development of the disease.

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Michael Emes

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Much of our current effort is focused on understanding the regulation of starch synthesis in storage tissues such as the developing seeds of cereals. Starch is the major determinant of yield in such crops, and has wide application in both the food and non-food industries, yet there remain a huge number of unknowns in what limits the production and structure of this important glucan polymer. There is also an increasing realization that different types of starch provide benefits for human health. Our research covers cereals such as maize, barley, rice, and wheat, as well as the model organism Arabidopsis thaliana. I lead a large, interdisciplinary team whose expertise includes plant biochemistry, genetics, molecular biology, microbiology, human physiology, and nutrition.

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Scott Ryan

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While animal models have lead to huge advancements in our understanding of neurobiology, there is controversy over whether overexpression/silencing of gene expression is representative of diverse disease states. Indeed, the lack of availability of primary human neurons has made evaluating the pathological consequences of genomic mutations arduous. The use of human induced pluripotent stem cell (hiPSC) technology overcomes these limitations by providing a source of human neurons from both normal and disease genetic backgrounds. We currently focus on stem cell based models of Parkinson's Disease (PD) to study how mitochondrial stress mechanisms impact on neuronal function in human disease.

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David Ma

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Currently, there are several major areas of research focus including the study of basic fatty acid metabolism, understanding the association between plasma fatty acids and health outcomes, omega-3 fatty acids in the prevention of breast cancer, and examining determinants of health in the Guelph Family Health Study. In addition, related projects include the study of fats in brain health (concussion, Alzheimer's Disease), fatty liver disease, fatty acid metabolism, bone development and nutrigenomics.

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Jamie Burr

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Our research centres on the application of physical activity and other acute/chronic perturbations to human physiology to understand how and why the body adapts to these stresses. We take an integrative systems approach, with our work focusing on interventions and assessments of cardiovascular, respiratory and muscular physiology. Specific focus areas include projects to understand the effects peripheral blood flow manipulation, the consequences of particularly stressful exercise, and novel training methods to optimize targetted physiological adaptations. From a health perspective, we are interested in understanding how exercise can be used to prevent and control risk factors for cardiovascular and cardiometabolic disease.

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Amanda Wright

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The role of physical properties in determining the metabolic and health effects of foods is often overlooked. We aim to better understand the relationships between food properties and metabolic response, particularly for dietary lipids. After chemical and structural analyses, real and model food systems are exposed to simulated gastrointestinal conditions using static and dynamic models. This generates insight into how food properties interact with the biochemical and biophysical aspects of digestion to determine nutrient release and absorption. We couple these experimental approaches with human clinical trials to relate material properties and their digestive behavior with metabolic endpoints (e.g. absorption, satiety, inflammation, lipemia, gastrointestinal symptoms).

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