Search for dissertations about: "liver slices"
Found 5 swedish dissertations containing the words liver slices.
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1. Cyclic guanosine 3', 5'-monophosphate : studies on synthesis and efflux from hepatocytes, liver slices and cerebellar slices and on serotonin-mediated cGMP synthesis in human platelets
Abstract : The present study established the existence of a carrier mediated transport of 3'5' cGMP from rat liver slices, hepatocytes and cerebellar slices in which the cellular levels of 3'5' cGMP were elevated by application of appropriate stimuli and inhibitors of the 3'5' cyclic nucleotide phosphodiesterase. The carrier is specific for 3'5' cGMP as opposed to 3'5' cAMP. READ MORE
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2. Functional features of human cytochrome P450 1A2 : with special focus on caffeine and melatonin metabolism
Abstract : CYP1A2 is one of the major cytochrome P450 enzymes in the liver and metabolises drugs such as caffeine, clozapine, tacrine, and theophylline. CYP1A2 also has a role in chemical carcinogenesis due to its activation of procarcinogens, such as heterocyclic amines and arylamines. Caffeine is extensively used to assess CYP1A2 activity. READ MORE
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3. Adrenocorticolysis Induced by 3-MeSO2-DDE : Mechanisms of Action, Kinetics and Species Differences
Abstract : The DDT metabolite 3-methylsulphonyl-DDE (3-MeSO2-DDE) induces cell death specifically in the adrenal cortex of mice after a cytochrome P45011B1 (CYP11B1)-catalysed bioactivation. This substance is not only an environmental pollutant, but also a suggested lead compound for an improved chemotherapy of adrenocortical carcinoma (ACC). READ MORE
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4. Induction of human cytochrome P450 enzymes : predictive in vitro models and rifampicin induction in vivo
Abstract : The cytochrome P450 (P450) enzymes comprise the most important enzyme system with regard to phase I metabolism of drugs. Induction of P450s can result in decreased plasma concentrations of the drug itself or a coadminstered drug, followed by lack of effect. READ MORE
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5. Structure and function of hepatic cytochromes P450 : implications for drug development
Abstract : Prediction of human drug metabolism in vivo by use of in vitro systems is of immense importance in drug development since it allows avoidance of drugs coming out on the market that are subjected to interindividual variability in metabolism or causes drug-drug interactions, both of which in turn can lead to adverse drug reactions and result in non-optimal treatment. In the present investigations the importance of P450 haplotype on substrate specificity was studied as well as a comparison of different in vitro systems for optimal prediction of in vivo drug metabolism. READ MORE