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New target for treating diabetic kidney disease, the leading cause of kidney failure

Date:
October 18, 2012
Source:
American Society of Nephrology (ASN)
Summary:
Researchers have discovered a new therapeutic target for diabetic nephropathy, the leading cause of kidney failure. The findings could help protect the kidney health of individuals with diabetes.

Researchers have discovered a new therapeutic target for diabetic nephropathy, the leading cause of kidney failure. The findings, appearing in an upcoming issue of the Journal of the American Society of Nephrology (JASN), could help protect the kidney health of individuals with diabetes.

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While it's unclear precisely how diabetic nephropathy -- kidney disease or damage that occurs in people with diabetes -- develops, inflammation is likely involved. One particular inflammatory molecule, osteopontin, seems to play a prominent role, making it a potential target for future therapies.

In an attempt to inhibit osteopontin expression, Daisuke Ogawa, MD, PhD (Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, in Japan) and his colleagues tried activating a receptor that blocks the expression of genes involved in inflammation. This receptor, liver x receptor (LXR), can be activated with a drug named T0901317.

When diabetic mice with kidney damage were given T0901317, the animals' kidneys became healthier and functioned better. Also, the T0901317 treatment markedly decreased the expression of osteoponin and other inflammatory molecules in the kidneys. Laboratory experiments with kidney cells revealed that high sugar concentrations -- like those seen in the blood of diabetics -- increased osteopontin expression, which could be inhibited with T0901317.

"These observations support an important role for LXR agonists in suppressing the inflammatory responses in diabetic kidneys and preventing the development of nephropathy," said Dr. Ogawa.

Study co-authors include Hiromi Tachibana, Yuichi Matsushita, Dennis Bruemmer, Jun Wada, Sanae Teshigawara, Jun Eguchi, Chikage Sato-Horiguchi, Haruhito Adam Uchida, Kenichi Shikata, and Hirofumi Makino.


Story Source:

The above story is based on materials provided by American Society of Nephrology (ASN). Note: Materials may be edited for content and length.


Cite This Page:

American Society of Nephrology (ASN). "New target for treating diabetic kidney disease, the leading cause of kidney failure." ScienceDaily. ScienceDaily, 18 October 2012. <www.sciencedaily.com/releases/2012/10/121018094855.htm>.
American Society of Nephrology (ASN). (2012, October 18). New target for treating diabetic kidney disease, the leading cause of kidney failure. ScienceDaily. Retrieved November 21, 2014 from www.sciencedaily.com/releases/2012/10/121018094855.htm
American Society of Nephrology (ASN). "New target for treating diabetic kidney disease, the leading cause of kidney failure." ScienceDaily. www.sciencedaily.com/releases/2012/10/121018094855.htm (accessed November 21, 2014).

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