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Diabetes Patients Not Benefiting from Advances in Kidney Care

Posted: Saturday, March 05, 2011

Despite significant advances in kidney care over the past 20 years, efforts to improve therapy for Type 1 diabetes patients with kidney dysfunction remain unsuccessful.

The results suggest that more effective therapies are needed for these patients.

One in three patients with Type 1 diabetes develops a condition called macroalbuminuria, where especially high amounts of protein are lost through the urine. Patients with Type 1 diabetes and macroalbuminuria face increased risks of developing kidney failure, or end stage renal disease (ESRD), and of dying from heart-related causes. Andrzej Krolewski, MD, PhD (Joslin Diabetes Center and Brigham and Women's Hospital) and his colleagues studied these risks in patients at the Joslin Clinic, a large institution that specializes in the care of patients with diabetes and where new clinical protocols are promptly adopted and implemented.

Between 1991 and 2004, the investigators enrolled 423 white patients with Type 1 diabetes who developed macroalbuminuria. Ninety-eight percent of patients were followed through 2008; ESRD developed in 172 patients, and 29 died without ESRD. The majority of these outcomes occurred between ages 36 and 52 years with durations of diabetes of 21 to 37 years.

During the more than 15 years of follow-up, the use of treatments to protect the kidneys increased from 56% to 82%, and blood pressure and cholesterol levels improved significantly. However, the risks for both ESRD and pre-ESRD death did not change over that time. There were 70 post-ESRD deaths, and the mortality rate was very similar during the 1990s and the 2000s. Throughout the study, patients who received pre-emptive kidney transplants (before dialysis) were less likely to die.

"Our findings clearly indicate that the accomplishments in treatment of patients with Type 1 diabetes and macroalbuminuria over the last 20 years are not effective enough, and more effective therapies to retard progression to ESRD are desperately needed," said Dr. Krolewski. "New therapies need to be developed including more aggressive or experimental protocols to stop or retard declining renal function, which leads to ESRD," he added.

Source: http://www.diabetesincontrol.com/index.php?option=com_content&view=article&id=10581&catid=53&Itemid=8, Journal of the American Society Nephrology (JASN). March 2011.