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Protein in Urine Linked to Increased Risk of Memory Problems, Dementia Print E-mail
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จันทร์, 19 ธันวาคม 2016

December 14, 2016

MINNEAPOLIS, Minn -- December 14, 2016 -- People who have protein in their urine are more likely to later develop problems with thinking and memory skills or even dementia, according to a meta-analysis published in the December 14, 2016, online issue of Neurology.

The researchers looked at all available studies on kidney problems and the development of cognitive impairment or dementia.

“Kidney dysfunction has been considered a possible risk factor for cognitive impairment or dementia,” said Kay Deckers, MD, Maastricht University, Maastricht, the Netherlands. “Chronic kidney disease and dementia share many risk factors, such as high blood pressure, diabetes, and high cholesterol, and both show similar effects on the brain, so they may have shared vascular factors or there may even be a direct effect on the brain from kidney problems.” 

A total of 22 studies on the topic were included in the systematic review. Five of the studies, including 27,805 people, were evaluated in the meta-analysis on albuminuria or proteinuria.

The analysis showed that people with protein in the urine were 35% more likely to develop cognitive impairment or dementia than people who did not have protein in their urine.

For another marker of kidney function, estimated glomerular filtration rate, the results were mixed and did not show an association. For 3 other markers of kidney function, cystatin C, serum creatinine, and creatinine clearance, no meta-analysis could be completed because the few studies available did not use the same methods and could not be compared.

“Protein in the urine was associated with a modestly increased risk of cognitive impairment or dementia,” said Dr. Deckers. “More research is needed to determine whether the kidney problems are a cause of the cognitive problems or if they are both caused by the same mechanisms.”

SOURCE: American Academy of Neurology

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