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Behaviour of butyrylcholinesterase in the intestinal epithelial cells of starved and refed rats


, : Behaviour of butyrylcholinesterase in the intestinal epithelial cells of starved and refed rats. International Journal of Biochemistry 24(2): 263-266

1. The activity and the molecular characteristics of butyrylcholinesterase were studied in the epithelial cells of the following intestinal segments: duodenum, jejunum, ileum, caecum and colon of starved and refed rats. 2. After starvation, the specific activity of the enzyme is found to increase in the jejunum. The same level of activity was maintained after refeeding. No notable changes were observed in the other intestinal segments after either starvation or refeeding. 3. The behavior of aminopeptidase, a well-characterized intestinal enzyme, is comparable to that of butyrylcholinesterase, except in the duodenum where the aminopeptidase activity is increased after refeeding. 4. In this cell type, BuChE is found only in its globular forms (G1, G2 and G4). Starvation resulted in a higher value of the sedimentation coefficient of the ileal G2 form, suggesting the existence of a complex between the enzyme and non-cholinesterase components. 5. After refeeding, the sedimentation profile was similar to that of control.

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Accession: 002308923

PMID: 1733792

DOI: 10.1016/0020-711x(92)90256-z

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