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Lucky Dogs Get Shot at Diabetes Cure
Date:2/14/2013

By Serena Gordon
HealthDay Reporter

THURSDAY, Feb. 14 (HealthDay News) -- In news that might one day help humans who struggle with type 1 diabetes every day, Spanish researchers report that a single session of gene therapy injections cured five beagle puppies who had the blood sugar disease.

Even four years later, the dogs showed no signs of diabetes.

"Our data represent the first demonstration of long-term correction of diabetes in a large animal model using gene transfer," the scientists wrote in the Feb. 7 online issue of Diabetes.

However, the dogs all had a chemically induced version of diabetes that's meant to model human type 1 diabetes.

In humans, type 1 diabetes is an autoimmune disease, which means the body's own immune system mistakenly attacks healthy cells as though they were bacteria or viruses.

In the case of type 1 diabetes, the immune system destroys the insulin-producing beta cells located in the pancreas. Insulin is a hormone that's needed to transport glucose into the body's cells to be used as fuel. Glucose is sugar that comes from the carbohydrates you consume. Carbohydrates are nutrients found in a variety of foods, including fruits, vegetables, breads and sweets.

Once the beta cells are destroyed, the body no longer makes insulin (or makes very little of the hormone), and anyone with type 1 diabetes needs insulin injections or an insulin pump for the rest of their lives.

However, insulin needs change constantly, depending on the type and amount of food eaten and level of physical activity. Even emotions can affect insulin levels. Too little insulin can cause high blood sugar levels, while too much insulin can cause low blood sugar levels. Neither condition is healthy and, if severe enough, either can cause death.

In the current study, the researchers developed a gene therapy that served two purposes: one was to sense the amount of glucose in skeleta
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