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Applied and Environmental Microbiology
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Research Article

Influence of indigenous microbiota on activities of alkaline phosphatase, phosphodiesterase I, and thymidine kinase in mouse enterocytes.

D D Whitt, D C Savage
D D Whitt
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D C Savage
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ABSTRACT

An indigenous microflora introduced into the gastrointestinal tracts of animals in a population of germfree mice affected in different ways three enzymes in small bowel enterocytes. Cells were obtained by techniques designed for sequentially removing enterocytes from the tip of the villus to the crypts of Lieberkühn. The specific activity of alkaline phosphatase, a component of the enterocyte microvillous membrane, did not differ in cells isolated from germfree mice and from those associated with a microflora, while that of phosphodiesterase I, also a part of the microvillous membrane, was approximately 1.5-fold greater in the suspensions from all levels of the villi in germfree mice than in those from the associated animals. By contrast, the specific activity of thymidine kinase, a cytosol enzyme, in suspensions in which the cells were isolated from the lower portion of the villi and crypts was about one-half as great in cells from germfree mice as in those from the same regions of animals with a microbiota. These results support the hypothesis that activities of certain enzymes involved in metabolism, uptake, and incorporation by enterocytes of components of dietary nuclei acids are influenced by a microflora.

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Influence of indigenous microbiota on activities of alkaline phosphatase, phosphodiesterase I, and thymidine kinase in mouse enterocytes.
D D Whitt, D C Savage
Applied and Environmental Microbiology Oct 1988, 54 (10) 2405-2410; DOI:

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Influence of indigenous microbiota on activities of alkaline phosphatase, phosphodiesterase I, and thymidine kinase in mouse enterocytes.
D D Whitt, D C Savage
Applied and Environmental Microbiology Oct 1988, 54 (10) 2405-2410; DOI:
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