Sökning: "single-pass perfusion"
Visar resultat 1 - 5 av 7 avhandlingar innehållade orden single-pass perfusion.
1. Drug Transport and Metabolism in Rat and Human Intestine
Sammanfattning : One of the aims of this thesis was to investigate the involvement of efflux proteins, such as the P-glycoprotein (Pgp), in the drug transport in different regions of the rat and the human intestine. The intestinal extrusion of intracellularly formed CYP3A4 metabolites, including whether this extrusion might be mediated by Pgp, was also studied. LÄS MER
2. Biopharmaceutical aspects of intestinal drug absorption : Regional permeability and absorption-modifying excipients
Sammanfattning : Before an orally administered drug reaches the systemic circulation, it has to dissolve in the intestinal fluids, permeate across the intestinal epithelial cell barrier, and pass through the liver. The permeation rate of drug compounds can be low and show regional differences.The thesis had two general aims. LÄS MER
3. Intestinal permeability and presystemic metabolism of R/S-verapamil and fluvastatin
Sammanfattning : The rate and extent of absorption of drugs from the gastrointestinal tract into the systemiccirculation is defined as the bioavailability. The bioavailability is influenced by a numberof pharmaceutical, pharmacokinetic, biochemical and physiological factors. Two key-variables are the intestinal permeability and the presystemic metabolism. LÄS MER
4. Intestinal transport and hepatic extraction of fluvastatin in humans and rats
Sammanfattning : The oral route is the most convenient route of delivering drugs intended to have systemic effects. One of the key variables determining the rate and extent of absorption from the gastrointestinal tract is the intestinal permeability to the drug. LÄS MER
5. Intestinal absorption of drugs : The impact of regional permeability, nanoparticles, and absorption-modifying excipients
Sammanfattning : For successful delivery of orally given drug products, the drug compounds must have adequate solubility and permeability in the human gastrointestinal tract. The permeability of a compound is determined by its size and lipophilicity, and is usually evaluated in various pre-clinical models, including rat models. LÄS MER