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Diabetes PhD Research Proposal Sample

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PHD RESEARCH PROPOSAL ON DIABETES<br />

in the pancreas. Traveling by blood, it binds to different cells (muscular, liver, fatty, etc.) and acts like a<br />

key that opens the door lock through which glucose can enter each cell. Large amounts of insulin are<br />

excreted into the blood, especially after a meal, because there are many glucose in the blood that must<br />

enter the cells. At this time, no glucose is released in the liver and muscles, but a reverse process occurs,<br />

i.e. the excess of glucose is stored in the liver and the muscle cells, in order to create energy reserves for<br />

the hunger condition. If the liver and muscles are sufficiently supplied with these glucose reserves, the<br />

excess is converted into fat and stored in the fat cells. At the time of starvation the processes go in<br />

reverse. When insulin performs its function, it breaks down and is excreted from the body, which<br />

explains the need for constant replacement of insulin in the blood, especially after a meal when the<br />

need is greatest. Type 1 diabetes occurs in 5 to 10% of cases of this disease, characterized by insulin<br />

deficiency attributable to inability to produce pancreatic beta-cells. In Type 2 diabetes, insulin<br />

receptors become insensitive or insulin resistant and therefore glucose cannot enter the cells, resulting<br />

in hyperglycemia. In the occurrence of type 2 diabetes, there is usually a double disorder. The first is a<br />

decrease in insulin receptors in the cells and the inability of insulin to transport glucose to the cells<br />

(insulin resistance), especially in fatty tissue, liver, skeletal muscle cells. Insulin resistance disrupts<br />

normal glucose entry into cells, and also affects increased glucose uptake in the liver. Insulin resistance<br />

is partly a genetic disorder, but external factors such as obesity, increased concentration of free fatty<br />

acids in the blood, reduced body activity, older age ... contribute to its development. Thus, blood<br />

glucose levels increase, and the pancreas begins to gain higher levels of insulin to amplify glucose entry<br />

into the cells, initially solving problem-soluble glucose in the blood and this time referred to as<br />

impaired glucose tolerance (Nguyen et al., 2015). As the cells continue to have insulin resistance, the<br />

process further goes into a circle with increasing insulin secretion, the pancreas is exhausted over time,<br />

and the secretion of insulin is reduced, which ultimately has the onset of diabetes<br />

REFERENCES<br />

Codella, R., Terruzzi, I., & Luzi, L. (2017). Why should people with type 1 diabetes exercise regularly?.<br />

Acta Diabetologica, 1 - 16.<br />

Nguyen, T., Obeid, J., Walker, R. G., Krause, M. P., Hawke, T. J., McAssey, K. & Timmons, B. W. (2015).<br />

Fitness and physical activity in youth with type 1 diabetes mellitus in good or poor glycemic<br />

control. Pediatric diabetes, 16 (1), 48 - 57.<br />

Colberg, S. R., Sigal, R. J., Yardley, J. E., Riddell, M. C., Dunstan, D. W., Dempsey, P. C. & Tate, D. F.<br />

(2016). Physical activity/ exercise and diabetes: a position statement of the American <strong>Diabetes</strong><br />

Association. <strong>Diabetes</strong> Care, 39 (11), 2065 – 2079.

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