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Blood And Urine Protein Predicts Chronic Kidney Disease Progression

Date:
February 2, 2009
Source:
American Society of Nephrology
Summary:
Measuring a small protein in the blood and urine can predict which patients with non-advanced chronic kidney disease (CKD) will progress to a more serious form of the disease, according to a new study. The findings could be used to devise a new screening method for identifying which patients should receive aggressive therapies to prevent the progression of their disease.

Measuring a small protein in the blood and urine can predict which patients with non-advanced chronic kidney disease (CKD) will progress to a more serious form of the disease, according to a new study. The findings could be used to devise a new screening method for identifying which patients should receive aggressive therapies to prevent the progression of their disease.

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The blood and urine of some individuals with impaired kidney function have increased levels of a small protein called Neutrophil Gelatinase-Associated Lipocalin (NGAL). NGAL is released from injured renal tubular cells, which are cells crucial for proper functioning of the kidneys. Preliminary research has also shown that individuals with high levels of NGAL experience worsening of their kidney function within one year, compared with individuals with lower levels of NGAL. However, no definitive study has demonstrated the potential of NGAL measurements for predicting how a patient's CKD will progress.

To accomplish this, Michele Buemi, MD, of the University of Messina in Messina, Italy and her colleagues examined the predictive value of blood and urinary NGAL measurements for the progression of CKD in a wide variety of patients with non-advanced CKD.

The investigators evaluated the blood and urine levels of NGAL in 96 patients with non-terminal CKD who were followed for an average of 18.5 months. By the end of the study, 31 patients experienced significant progression of their disease, in some cases developing end-stage renal disease. The researchers noted that at the start of the study, these patients had increased NGAL levels compared with patients whose disease did not progress. Both urinary NGAL and blood NGAL levels each predicted worsening of CKD. Therefore, "NGAL… represents a strong and independent risk marker for progression of CKD," the authors concluded.

The findings could be used to screen patients with CKD to determine their risk of worsening disease and to indicate which patients should receive aggressive treatments. "Our study offers a great new tool for prevention of renal failure progression," said Dr. Buemi. The results are particulary important today as CKD has become a severe public health problem and incidence rates continue to rise.


Story Source:

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


Journal Reference:

  1. Neutrophil Gelatinase-Associated Lipocalin (NGAL) and Progression of Chronic Kidney Disease. Clinical Journal of the American Society Nephrology, Online January 28, 2009, In print February 2009

Cite This Page:

American Society of Nephrology. "Blood And Urine Protein Predicts Chronic Kidney Disease Progression." ScienceDaily. ScienceDaily, 2 February 2009. <www.sciencedaily.com/releases/2009/01/090128183913.htm>.
American Society of Nephrology. (2009, February 2). Blood And Urine Protein Predicts Chronic Kidney Disease Progression. ScienceDaily. Retrieved October 25, 2014 from www.sciencedaily.com/releases/2009/01/090128183913.htm
American Society of Nephrology. "Blood And Urine Protein Predicts Chronic Kidney Disease Progression." ScienceDaily. www.sciencedaily.com/releases/2009/01/090128183913.htm (accessed October 25, 2014).

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