Search for dissertations about: "P-glycoprotein"

Showing result 6 - 10 of 49 swedish dissertations containing the word P-glycoprotein.

2. 6. Interindividual Variability of Drug Transport Proteins : Focus on Intestinal Pgp (ABCB1) and BCRP (ABCG2)

   Author : Gunilla Englund; Per Artursson; Håkan Melhus; Andreas Kindmark; Joseph W Polli; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutics; membrane transport proteins; ATP-Binding Cassette Transporters; P-glycoprotein; Breast Cancer Resistance Protein; Interindividual variability; Galenisk farmaci; Pharmaceutics; Galenisk farmaci;

   Abstract : The appearance of adverse drug reactions is a common reason for hospitalization in Western countries. Research on underlying biological mechanisms for interindividual variability in drug response aims to better identify patients with exceptional genetic traits, disease conditions or risk of drug-drug interactions and thereby help to prevent adverse drug reactions. READ MORE

4. 7. Intestinal Permeability and Presystemic Extraction of Fexofenadine and R/S-verapamil

   Author : Christer Tannergren; Hans Lennernäs; Dirk KF Meijer; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biopharmacy; Bioavailability; Fexofenadine; Verapamil; P-glycoprotein; CYP3A4; OATP; Enantioselective; Permeability; Caco-2; Intestinal perfusion; Biofarmaci; Biopharmacy; Biofarmaci;

   Abstract : The main objective of this thesis was to investigate the in vivo relevance of membrane transporters and cytochrome P450 (CYP) 3A4-mediated metabolism in the intestine and liver for the bioavailability of drugs in humans after oral administration.In the first part of the thesis, the main transport mechanisms involved in the intestinal absorption and bioavailability were investigated for fexofenadine, a minimally metabolized drug, which is a substrate for P-glycoprotein (P-gp) and members of organic anion transporting polypeptide (OATP) family. READ MORE

5. 8. Involvement of Membrane Transport Proteins in Intestinal Absorption and Hepatic Disposition of Drugs Using Fexofenadine as a Model Drug

   Author : Niclas Petri; Hans Lennernäs; Geoffrey Tucker; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Biopharmacy; Fexofenadine; OATP; P-glycoprotein; Organic Anion Transporters; ATP-Binding Cassette Transporters; membrane transport proteins; Bioavailability; Biopharmaceutics; Biofarmaci; Biopharmacy; Biofarmaci;

   Abstract : The aims of this thesis were to study the in vivo relevance of membrane transporters for intestinal absorption and the hepatic disposition of drugs in humans and preclinical models. Fexofenadine is a substrate for ABCB1 (P-glycoprotein) and members of the organic anion transporting polypeptide (OATP/SLCO) family. READ MORE

6. 9. Intestinal barriers to oral drug absorption: Cytochrome P450 3A and ABC-transport proteins

   Author : Helena Engman; Per Artursson; Hans Lenernäs; Heyo K Kroemer; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmaceutics; oral drug delivery; bioavailability; human jejunum; Caco-2; ABC-transporter; P-glycoprotein; CYP3A; Galenisk farmaci; Pharmaceutics; Galenisk farmaci;

   Abstract : The subject of this thesis was to study two intestinal barriers to oral drug bioavailability, drug efflux proteins of the ABC-transporter family, and in particular ABCB1/P-glycoprotein (Pgp), and the drug metabolizing enzyme cytochrome P450 (CYP) 3A4. At the onset of this thesis, similarities between CYP3A4 and Pgp in terms of their tissue distribution and gene regulation, along with overlapping substrate specificities, had generated the hypothesis that CYP3A4 and Pgp may have a complementary function and thus form a coordinated intestinal barrier to drug absorption and gut wall metabolism. READ MORE

7. 10. Aggressive lymphoma

   Author : Mats Jerkeman; Bröstcancer-genetik; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Cytology; BCL6 rearr; 1q21-23; cytogenetics; histopathology; P-glycoprotein; p53; BCL2; Ki-67; immunohistochemistry; proliferation; dose intensity; health-related quality of life; International Prognostic Index; prognostic factors; aggressive lymphoma; chemotherapy; patologisk anatomi; Patologi allmän ; pathological anatomy; General pathology; cancer; onkologi; Cytologi; cancerology; oncology;

   Abstract : Aggressive lymphoma is a rapidly growing tumour of lymphocyte origin, potentially curable with chemotherapy. In a trial by the Nordic Lymphoma Group, 405 patients with aggressive lymphoma were included, and randomised to receive either the standard chemotherapy regimen, CHOP, or a weekly multidrug regimen, MACOP-B. READ MORE