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Foods With Added Fiber Lower Serum Creatinine Levels in Patients With Chronic Kidney Disease.
MedLine Citation:
PMID:  22739658     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: To determine the effect of foods with added fiber on blood urea nitrogen (BUN) and serum creatinine concentrations in patients with chronic kidney disease (CKD). DESIGN: Participants were enrolled in a 6-week single-blind crossover study. SETTING: Free living with partial dietary intervention. PATIENTS: Thirteen CKD patients with Modification of Diet in Renal Disease formula-based estimated glomerular filtration rate (eGFR) ≤50 mL/minute/1.73 m(2) at the time of screening (5 men, 8 women; mean age, 67.0 ± 14.8 years) completed the study. INTERVENTION: Patients consumed control foods (cereal, cookies, and bars) providing 1.6 g/day fiber daily for 2 weeks, followed by similar foods providing 23 g/day fiber daily for 4 weeks, incorporated into their usual diets. MAIN OUTCOME: The main outcome of the study was the determination of the impact of foods with added fiber on BUN and serum creatinine levels. RESULTS: Consuming foods with added fiber resulted in a 10.6% decrease in mean BUN concentration (13.8 ± 2.0 to 12.1 ± 1.8 mmol/L or 38.5 ± 5.6 to 34.0 ± 5.1 mg/dL; P < .05). Serum creatinine level decreased from a baseline value of 216 ± 26 to 201 ± 23 mmol/L (2.44 ± 0.30 to 2.27 ± 0.26 mg/dL; P < .05) after 2 weeks of fiber-containing food consumption, and remained significantly lower at 195 ± 23 mmol/L (2.21 ± 0.26 mg/dL) after 4 weeks of the intervention (P < .05). Calculated eGFR increased from a baseline value of 29.6 ± 3.5 to 31.4 ± 3.8 mL/minute/1.73 m(2) at the end of 2 weeks, and remained higher at 32.5 ± 3.6 mL/minute/1.73 m(2) after 4 weeks of fiber intervention (P < .05). CONCLUSION: We conclude that increasing fiber intake in CKD patients through the consumption of foods with added fiber may reduce serum creatinine levels and improve eGFR. Additional studies are warranted to confirm these findings and to determine whether the changes are due to direct effects on kidney function.
Authors:
Younis A Salmean; Mark S Segal; Bobbi Langkamp-Henken; Muna T Canales; Gordon A Zello; Wendy J Dahl
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-26
Journal Detail:
Title:  Journal of renal nutrition : the official journal of the Council on Renal Nutrition of the National Kidney Foundation     Volume:  -     ISSN:  1532-8503     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-28     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9112938     Medline TA:  J Ren Nutr     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012. Published by Elsevier Inc.
Affiliation:
Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida.
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