Utilization of short-chain fatty acids by colonic mucosal tissue strips. A new method of assessing colonic mucosal metabolism.
2000
Background: Previous metabolic studies of the colonic mucosa have been done using isolated cells or small biopsy specimens. Methods: A new method for assessing the utilization of short-chain fatty acids in human colonic mucosal tissue strips considerably larger than routine samples was evaluated and compared with the method of isolated colonocytes. Human colonic mucosal strips and isolated human and rat colonocytes were incubated with acetate (C2), butyrate (C4), and hexanoate (C6), and oxidation rates obtained by quantifying the production of CO2. Results: The wet weight of strips was highly correlated with the production of CO2, and intersample coefficient of variance was C4
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