Search for dissertations about: "Biopharmaceutics"

Showing result 21 - 25 of 33 swedish dissertations containing the word Biopharmaceutics.

  2. 21. In vivo Pharmacokinetics of Two New Thrombin Inhibitor Prodrugs : Emphasis on Intestinal and Hepatobiliary Disposition and the Influence of Interacting Drugs

    Author : Elin Matsson; Hans Lennernäs; Lars Knutson; Ulf Eriksson; Kim Brouwer; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Direct thrombin inhibitors; prodrugs; ximelagatran; AZD0837; erythromycin; ketoconazole; drug-drug interactions; hepatobiliary transport; biliary clearance; ATP-binding cassette; ABC transporters; solute carriers; SLC transporters; CYP3A4; Biopharmacy; Biofarmaci; Biopharmaceutics; Biofarmaci;

    Abstract : Biliary excretion is an important elimination route for many drugs and metabolites. For such compounds, it is important to know the extent of excretion and drug exposure in the bile, e.g., for the risk assessment of drug interactions, liver toxicity and the effects of genetic variants. READ MORE

  4. 22. Clinical pharmacokinetic/pharmacodynamic modelling of 5a-reductase inhibitors for the treatment of benign prostatic hyperplasia

    Author : Per Olsson Gisleskog; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; Biopharmaceutics; biofarmaci;

    Abstract : Dihydrotestosterone (DHT), a potent androgen necessary for the development of benign prostatic hyperplasia (BPH) is formed from testosterone by the enzyme 5α-reductase, of which there are two types. The irreversible 5α-reductase inhibitors dutasteride, which inhibits both isozymes, and finasteride, which inhibits only one, are intended for the treatment of BPH. READ MORE

  5. 23. 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. 24. Intestinal absorption of drugs : The impact of regional permeability, nanoparticles, and absorption-modifying excipients

    Author : Carl Roos; Hans Lennernäs; Erik Sjögren; Martin Brandl; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Permeability; intestinal absorption; regional permeability; nanoparticles; nanosuspensions; absorption-modifying excipients; AMEs; Biofarmaci; Biopharmaceutics;

    Abstract : 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. READ MORE

  7. 25. Intestinal permeability and presystemic metabolism of R/S-verapamil and fluvastatin

    Author : Rikard Sandström; Uppsala universitet; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacy; FARMACI; PHARMACY; FARMACI; Biopharmaceutics; biofarmaci;

    Abstract : 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. READ MORE