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Continuous Glucose Sensors Accelerate Development of Artificial Pancreas

March 30, 2006

FDA approval of the latest continuous glucose sensor represents technology trend that could revolutionize diabetes care and management, says the Juvenile Diabetes Research Foundation.


FDA approval of the latest continuous glucose sensor represents technology trend that could revolutionize diabetes care and management, says the Juvenile Diabetes Research Foundation.

NEW YORK /PRNewswire/ -- The Juvenile Diabetes Research Foundation (JDRF), the world's leading charitable supporter of research on Type 1 diabetes and its complications, has said that the federal government's approval of another medical device that continuously monitors glucose is an important step in the development of an artificial pancreas -- a major research priority for JDRF -- and has the potential to greatly improve the quality of diabetes care and lower the risk of complications such as blindness, heart attack, kidney failure, and amputation.

"Continuous glucose sensors represent a giant leap forward in care for people with diabetes, allowing them to monitor their glucose levels and precisely dose their insulin based on that real-time information," said Aaron Kowalski, PhD, Director of Strategic Research Projects at JDRF. "This technology should greatly improve glycemic control -- which research has shown to be the key to reducing or even eliminating both short and long-term complications of diabetes."

The new device, called the STS Continuous Glucose Monitoring System, from San Diego-based DexCom, Inc., was approved by the Food and Drug Administration last Friday for use in people with diabetes. It's the latest product in what is expected to become a competitive market for continuous glucose monitoring products.

"By helping people with diabetes prevent serious and costly complications, continuous glucose sensors can greatly improve the health care system," said Cynthia Rice, Director of New Technology Access at JDRF. She noted that total diabetes-related costs exceed $132 billion a year, and 32 percent of Medicare expenditures are spent on people with diabetes. Nearly 21 million Americans have diabetes and one in three children will someday develop the disease. Diabetes is the leading cause of kidney failure and adult-onset blindness, increases the risk of heart attack deaths by two-to-four times, and leads to more than 80,000 amputations each year.

Dr. Kowalski noted that research continues to confirm that current diabetes technology is inadequate. Some studies, he said, have found that even those patients who were intensively managing their disease -- measuring their glucose an average of nine times a day -- spent less than 30 percent of the day in normal glucose range. The rest of the time their glucose was either too high (which can cause eye, heart, kidney, and nerve disease), or too low (which can cause seizures, comas, and death). But studies have also found that patients using continuous glucose sensors spent 26 percent more time in normal glucose range, and have statistically significant improvements in HbA1c levels, an important measure of longer-term glucose control.

Monitors such as these are the keys to the eventual development of a closed-loop glucose testing and insulin delivery system, or an "artificial pancreas." Continuous glucose sensors read glucose levels on a minute-by- minute basis using a small sensor that is inserted under the skin, which transmits data to a hand-held device. These devices not only provide actual glucose readings, but can tell a patient whether their glucose level is trending upwards or downwards, allowing them to continually adjust their medication, diet and exercise to prevent high and low glucose levels.

Closed loop technology will provide patients and their doctors with far more information about their daily glucose fluctuations and trends, and allow for far tighter control. Patients who aggressively manage their diabetes typically test their glucose up to eight times a day, and provide insulin injections based on that information. The artificial pancreas will test glucose approximately 1,400 times a day, and make insulin dosing information based on that real-time information.

"The development of an artificial pancreas has been one of JDRF's top research goals, and we are cautiously optimistic that these new products will be as successful and beneficial to people with diabetes as we hope," added Dr. Kowalski. "The next critical steps are for Medicare and private sector insurers to provide reimbursement for these technologies."

JDRF was founded in 1970 by the parents of children with juvenile diabetes -- a disease that strikes children suddenly, makes them insulin dependent for life, and carries the constant threat of devastating complications. Since inception, JDRF has provided more than $900 million to diabetes research worldwide. More than 80 percent of JDRF's expenditures directly support research and education about research. JDRF's mission is constant: to find a cure for diabetes and its complications through the support of research.


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