Kidney Disease Progresses Faster In African Americans Than Other Races

FG_AUTHORS: Medical News Today

Main Category: Urology / Nephrology
Also Included In: Diabetes;  Hypertension
Article Date: 02 Dec 2012 - 0:00 PST

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Kidney Disease Progresses Faster In African Americans Than Other Races


Healthcare Prof:Kidney Disease Progresses Faster In African Americans Than Other Races

Among individuals with chronic kidney disease (CKD), African Americans experience faster progression of the disease during later stages compared with other races, according to a study appearing in an upcoming issue of the Journal of the American Society of Nephrology (JASN). Also, screening of African Americans with CKD can help improve care and is cost-effective.

It is well known that African Americans have a similar prevalence of CKD as other Americans, but they are more likely to progress to kidney failure. The lifetime incidence of kidney failure is about 8.6% for African Americans compared with 3.5% for other Americans. The reasons for this disparity are not known.

To investigate, Thomas Hoerger, PhD (RTI International) and his colleagues used a simulation model of CKD progression to see if the prevalence of common CKD risk factors (such as high blood pressure and diabetes) could explain the higher lifetime incidence of kidney failure among African Americans.

The researchers found that the higher lifetime incidence of kidney failure among African Americans was not fully explained by the prevalence of common CKD risk factors. Instead, it could be explained by faster progression of CKD among African Americans during the later stages of the disease.

The investigators then considered whether screening for a particular marker of CKD called microalbuminuria - when the kidneys leak small amounts of protein into the urine - would be cost-effective. (Screening could lead to earlier treatment that might prevent kidney failure.) "We found that screening for microalbuminuria is cost-effective for African Americans at either five- or 10-year intervals, particularly for those with diabetes or hypertension," said Dr. Hoerger.

Kidney failure affected more than 571,000 US adults and cost more than $42 billion in 2009.

Article adapted by Medical News Today from original press release. Click 'references' tab above for source.
Visit our urology / nephrology section for the latest news on this subject.

Study co-authors include John Wittenborn, Xiaohui Zhuo, PhD, Meda Pavkov, MD, PhD, Nilka Burrows, Paul Eggers, PhD, Regina Jordan, Sharon Saydah, PhD, and Desmond Williams, MD, PhD.

Disclosures: This research was supported by funding from the Centers for Disease Control and Prevention. The findings and conclusions are those of the authors and do not necessarily represent the official position of the CDC. The authors reported no other financial disclosures.

The article, entitled "Cost-Effectiveness of Screening for Microalbuminuria among African Americans," appears online at http://jasn.asnjournals.org/, doi: 10.1681/ASN.2012040347.

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