| Impact of Dietary Calcium and Oxalate, and Oxalobacter Formigenes Colonization on Urinary Oxalate Excretion. | |
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MedLine Citation:
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PMID: 21575973 Owner: NLM Status: Publisher |
Abstract/OtherAbstract:
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PURPOSE: Enteric colonization with Oxalobacter formigenes, a bacterium whose main energy source is oxalate, has been demonstrated to decrease the risk of recurrent calcium oxalate kidney stone formation. We assessed the impact of diets controlled in calcium and oxalate contents on urinary and fecal analytes in healthy subjects who were naturally colonized with O. formigenes or not colonized with O. formigenes. MATERIALS AND METHODS: A total of 11 O. formigenes colonized and 11 noncolonized subjects were administered diets controlled in calcium and oxalate contents. We assayed 24-hour urine collections and stool samples obtained on the last 4 days of each 1-week diet for stone risk parameters and O. formigenes levels. Mixed model analysis was used to determine the effects of colonization status on these variables. RESULTS: Urinary calcium and oxalate excretion were significantly altered by the dietary changes in O. formigenes colonized and noncolonized individuals. Mixed model analysis showed significant interaction between colonization status and oxalate excretion on a low calcium (400 mg daily)/moderate oxalate (250 mg daily) diet (p = 0.026). Urinary oxalate excretion was 19.5% lower in O. formigenes colonized subjects than in noncolonized subjects on the low calcium/moderate oxalate diet (mean ± SE 34.9 ± 2.6 vs 43.6 ± 2.6 mg, p = 0.031). CONCLUSIONS: Results suggest that O. formigenes colonization decreases oxalate excretion during periods of low calcium and moderate oxalate intake. |
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Authors:
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Juquan Jiang; John Knight; Linda H Easter; Rebecca Neiberg; Ross P Holmes; Dean G Assimos |
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Publication Detail:
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Type: JOURNAL ARTICLE Date: 2011-5-14 |
Journal Detail:
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Title: The Journal of urology Volume: - ISSN: 1527-3792 ISO Abbreviation: - Publication Date: 2011 May |
Date Detail:
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Created Date: 2011-5-17 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 0376374 Medline TA: J Urol Country: - |
Other Details:
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Languages: ENG Pagination: - Citation Subset: - |
Copyright Information:
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Copyright © 2011 American Urological Association Education and Research, Inc. Published by Elsevier Inc. All rights reserved. |
Affiliation:
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Department of Microbiology and Biotechnology, Northeast Agricultural University, Harbin, People's Republic of China. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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