How can diabetes damage blood vessels




















Please support the work of our mission today. Skip to main content. For Patients What is a Vascular Surgeon? Who To Refer? Print PDF version. November 25, In the U. Diabetes also runs in families. Smokers who have diabetes are at higher risk for vascular complications than non-smokers with diabetes. Imagine what happens to sugar when it is left unwrapped overnight. It gets sticky. Damage to blood vessels occurs most often in the eyes, heart, nerves, feet, and kidneys.

Having kidney disease is very serious— even without diabetes. Without treatment, it can lead to:. Kidney damage can cause protein to leak into your urine. This protein is called "albumin. This test helps find kidney damage at an early stage in people with diabetes. You should have this simple urine test at least once a year. Your healthcare provider will create a special treatment plan for you. This may include taking medicines, limiting salt and certain foods, getting exercise, and more.

You will also need regular checkups to monitor your kidney function. Having kidney disease or diabetes does not mean your kidneys will fail. Finding and treating it early can help keep kidney disease from getting worse.

Controlling blood sugar is the best way to protect your eyes, heart, nerves, feet, and kidneys. It lowers your risk for all health problems from diabetes. This is true for all people with diabetes— with or without kidney damage. Ask your healthcare provider what you need to do to control your blood sugar. The National Kidney Foundation has free booklets that provide more information about diabetes.

Call the national toll-free number You can see these and other titles at www. If you would like more information, please contact us. NOS functions, however, only when attached to a blood vessel's endothelium inner membrane by a common fatty acid called palmitate. People with diabetes have low levels of FAS due to insulin deficiency or resistance, and this FAS deficit may be at the root of their increased vulnerability to blood vessel damage.

The researchers teased out the association by studying knockout mice genetically engineered to turn off a specific gene that lack FAS in their endothelial cells. FASTie mice had "leaky" blood vessels and impaired angiogenesis, meaning they were less able to restore blood flow after injury to an artery. In people with diabetes defective angiogenesis is implicated in peripheral vascular disease, which often leads to limb amputations.

He suggests that restoring FAS activity would be a novel therapeutic approach to countering vascular damage in diabetes. The role of FAS and lipid abnormalities is an "exciting new idea" in understanding endothelial dysfunction, according to King, but their specific contribution to the microvascular complications of diabetes is less clear.

There are steep hurdles to overcome in upgrading these proof-of-principle findings into therapeutic applications. The diabetic mouse model has not always translated well to humans, and commonly used knockout mice represent an extreme condition. Hyperglycemia is the condition in which an individual's blood glucose is abnormally high and is commonly caused by diabetes.

The researchers confirmed that glucose metabolism in endothelial cells is increased in high concentrations of glucose. They showed for the first time that this occurs because an enzyme that metabolises glucose in these cells, called hexokinase-2 HK2 , degrades more slowly in high glucose concentration and thereby metabolises more glucose than normal.

Increased glucose metabolism is the driver of metabolic dysfunction of endothelial cells in model hyperglycemia. They were able to correct this effect using a novel dietary supplement previously developed by the research team called a glyoxalase 1 inducer or Glo1 inducer.

They also found that the HK2 effect was the major mechanism increasing formation of a reactive glucose-derived substance called methylglyoxal MG , known to be increased in diabetes and linked to damage to blood cells, kidneys, retina and nerves in arms and legs in diabetes -- so-called vascular complication of diabetes.

MG binds and modifies proteins, causing them to become misfolded. In this study the researchers identified proteins susceptible to MG modification and this activates a protein quality surveillance system called the unfolded protein response, which removes damaged proteins. When the unfolded protein response is overworked with a high level of misfolded protein substrate it causes an inflammatory response and there is an increased risk of blood clot formation.



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