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  • Title: Role of gastrin/pentagastrin in regulation of intestinal cytochrome P-450.
    Author: Pascoe GA, Correia MA.
    Journal: Comp Biochem Physiol C Comp Pharmacol Toxicol; 1988; 90(1):41-6. PubMed ID: 2904872.
    Abstract:
    1. In the absence of intraluminal inducers, low "basal" levels of cytochrome P-450 and its dependent MFO activities are detected in the rat intestinal mucosa, and may be regulated by endogenous hormones. 2. Rats were nutritionally maintained by either short term (48 hr) intravenous glucose infusion or chronic (8 days) intravenous hyperalimentation, and were treated with various doses of pentagastrin in the infusate. 3. Regardless of the dose (6-90 micrograms/kg/hr) or duration of infusion (2-8 days), pentagastrin had no effect on small intestinal cytochrome P-450, its dependent MFO activity, or the activity of delta-aminolevulinic acid synthetase. 4. The intestinal trophic peptide hormone, gastrin, apparently does not regulate the cytochrome P-450-dependent MFO system of the small intestine.
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