Search for dissertations about: "Biopharmaceutics"

Showing result 1 - 5 of 28 swedish dissertations containing the word Biopharmaceutics.

  1. 1. Investigation and Prediction of Small Intestinal Precipitation of Poorly Soluble Drugs a Study Involving in silico, in vitro and in vivo Assessment

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Sara Carlert; Hans Lennernäs; Bertil Abrahamsson; Patrick Augustijns; [2012]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; gastrointestinal precipitation; crystallization; crystal nucleation; crystal growth; classical nucleation theory; poorly soluble drugs; drug absorption; biopharmaceutics classification system; in vitro in vivo correlations IVIVC ; in silico prediction; human intestinal fluid; dog intestinal fluid; simulated intestinal fluid; Biofarmaci; Biopharmaceutics;

    Abstract : The main objectives of the present project were to increase the understanding of small intestinal precipitation of poorly soluble pharmaceutical drugs, investigate occurrence of crystalline small intestinal precipitation and effects of precipitation on absorption. The aim was to create and evaluate methods of predicting crystalline small intestinal drug precipitation using in vivo, in vitro and in silico models. READ MORE

  2. 2. In vitro and in silico prediction of drug-drug interactions with transport proteins

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Gustav Ahlin; Per Artursson; Christel Bergström; Johan Karlsson; Jörg König; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Solute carrier; SLC transporter; OCT1; Organic cation transporter 1; SLC22A1; OATP1B1; SLCO1B1; Organic anion transporting peptide 1B1; Drug transport; Active transport; Genetic polymorphism; Cell lines; Gene expression; Multivariate data analysis; OPLS; PHARMACY Pharmaceutics; FARMACI Galenisk farmaci; PHARMACY Biopharmacy; FARMACI Biofarmaci; galenisk farmaci; Pharmaceutics; Biopharmaceutics; biofarmaci;

    Abstract : Drug transport across cells and cell membranes in the human body is crucial for the pharmacological effect of drugs. Active transport governed by transport proteins plays an important role in this process. A vast number of transport proteins with a wide tissue distribution have been identified during the last 15 years. READ MORE

  3. 3. In vitro evaluation of formulations used in the treatment of hepatocellular carcinoma

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Emelie Ahnfelt; Hans Lennernäs; Erik Sjögren; Niklas Axén; Jesper Østergaard; [2018]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Drug delivery system; Doxorubicin; Microgel; Emulsion; Hepatocellular carcinoma; Biofarmaci; Biopharmaceutics;

    Abstract : Hepatocellular carcinoma (HCC) causes ~ 600,000 deaths annually, making it the second most deadly cancer form. HCC is classified into five stages and for the intermediate HCC treatment, the two most commonly used drug delivery systems (DDSs) are lipiodol-based emulsions and drug-eluting beads. READ MORE

  4. 4. Development and Evaluation of Nonparametric Mixed Effects Models

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Paul Baverel; Mats Karlsson; Radojka Savic; Nils Hoem; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; nonparametric; model; pharmacometrics; pharmacokinetics; pharmacodynamic; imprecision; covariate analysis; parameter distribution; SOCIAL SCIENCES Statistics; computer and systems science; SAMHÄLLSVETENSKAP Statistik; data- och systemvetenskap; PHARMACY Pharmaceutical pharmacology; FARMACI Farmaceutisk farmakologi; Biopharmaceutics; Biofarmaci; Clinical Pharmacology; Klinisk farmakologi; Computer Systems; Datorteknik; Farmakologi; Pharmacology; Statistics; Statistik;

    Abstract : A nonparametric population approach is now accessible to a more comprehensive network of modelers given its recent implementation into the popular NONMEM application, previously limited in scope by standard parametric approaches for the analysis of pharmacokinetic and pharmacodynamic data.The aim of this thesis was to assess the relative merits and downsides of nonparametric models in a nonlinear mixed effects framework in comparison with a set of parametric models developed in NONMEM based on real datasets and when applied to simple experimental settings, and to develop new diagnostic tools adapted to nonparametric models. READ MORE

  5. 5. The Hepatobiliary Transport of Rosuvastatin In Vivo

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Ebba Bergman; Hans Lennernäs; Ulf Bondesson; Jack Cook; [2009]
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Rosuvastatin; Biliary excretion; Transport inhibition; Pharmacokinetics; Drug-drug interactions; Hepatobiliary transport; Organic anion transporting polypeptide; OATP; Statins; Gemfibrozil; Cyclosporine; Imatinib; Rifampicin; Canalicular transport; Sinusoidal transport; Hepatic uptake; Hepatic extraction; PHARMACY Biopharmacy; FARMACI Biofarmaci; Biopharmaceutics; biofarmaci;

    Abstract : In vivo studies of hepatobiliary disposition are challenging. The hepatobiliary system is complex, as its physiological localization, complex cellular structure with numerous transporters and enzymes, and the interindividual variability in protein expression and biliary flow will all affect the in vivo disposition of a drug under investigation. READ MORE