Now showing items 81-100 of 656

    • Molecular Modelling of PDE3A Catalytic Domain 

      Antobreh, Andrea B. (Master thesis; Mastergradsoppgave, 2020-05-14)
      <p>Recent studies have highlighted the clinical benefits of regulating phosphodiesterase-3 enzymes. Inhibition of PDE3A has proven to aid in preventing and treating cardiovascularrelated disorders and platelet dysfunction. Hypothermia is a condition that can cause cardiac arrest. However, there are no suitable inotropic drugs that are effective for use under hypothermic conditions. Being able to ...
    • Biofilm-related characteristics in clinical isolates of Extraintestinal Pathogenic E. coli 

      Nilsen, Mia Mathisen (Mastergradsoppgave; Master thesis, 2021-05-10)
      The rapid increase in antibiotic resistance is one of the leading global health issues at present time. Bacteria’s resistance to antibiotic agents can be a thousand times higher when they are embedded in an extracellular biopolymer matrix, defined as biofilm. The biofilm state is a major driver of persistent infections, offering a challenge in providing adequate treatment. Biofilm producing E. coli ...
    • How docetaxel entrapment, vesicle size, zeta potential and stability change with liposome composition–A formulation screening study 

      Holsæter, Ann Mari; Wizgird, Kristina; Karlsen, Iselin; Hemmingsen, Jeanette Frimand; Brandl, Martin; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-21)
      Limitations of the anticancer drug product Taxotere® have encouraged researchers to entrap the active ingredient docetaxel (DTX) into nanocarriers such as liposomes. However, until now no DTX-liposome formulation has reached the clinic. Hence, in the present study, different Soy-PC based DTX-liposome formulations were screened in an attempt to identify lipid-compositions with promising DTX-entrapment ...
    • Genetically determined reproductive aging and coronary heart disease: a bidirectional two-sample Mendelian Randomization 

      Dam, Veerle; Onland-Moret, N. Charlotte; Burgess, Stephen; Chirlaque, Maria Dolores; Peters, Sanne A.E.; Schuit, Ewoud; Tikk, Kaja; Weiderpass, Elisabete; Oliver-Williams, Clare; Wood, Angela M.; Tjønneland, Anne; Dahm, Christina C; Overvad, Kim; Boutron-Rualt, Marie-Christine; Schulze, Matthias B.; Trichopoulou, Antonia; Ferrari, Pietro; Masala, Giovanna; Krogh, Vittorio; Tumino, Rosario; Matullo, Giuseppe; Panico, Salvatore; Boer, Jolanda M. A.; Verschuren, W.M. Monique; Waaseth, Marit; Pérez, María José Sánchez; Amiano, Pilar; Imaz, Liher; Moreno-Iribas, Conchi; Melander, Olle; Harlid, Sophia; Nordendahl, Maria; Wennberg, Patrik; Key, Timothy J.; Riboli, Elio; Santiuste, Carmen; Kaaks, Rudolf; Katzke, Verena; Langenberg, Claudia; Wareham, Nicholas J.; Schunkert, Heribert; Erdmann, Jeanette; Willenborg, Christina; Hengstenberg, Christian; Kleber, Marcus E.; Delgado, Graciela; März, Winfried; Kanoni, Stavroula; Dedoussis, George; Deloukas, Panos; Nikpay, Majid; McPherson, Ruth; Scholz, Markus; Teren, Andrej; Butterworth, Adam S.; van der Schouw, Yvonne T. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-20)
      Background: Accelerated reproductive aging, in women indicated by early natural menopause, is associated with increased coronary heart disease (CHD) risk in observational studies. Conversely, an adverse CHD risk profile has been suggested to accelerate menopause.<p> <p>Objectives: To study the direction and evidence for causality of the relationship between reproductive aging and (non-)fatal CHD ...
    • Pharmacist's time spent: Space for Pharmacy-based Interventions and Consultation TimE (SPICE)-an observational time and motion study 

      Karia, Ajay; Norman, Richard; Robinson, Suzanne; Lehnbom, Elin; Laba, Tracey-Lea; Durakovic, Iva; Balane, Christine; Joshi, Rohina; Webster, Ruth (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-02)
      Objective To describe the pharmacists’ workflow, including tasks and time spent, to better understand their work capacity.<p> <p>Design Cross-sectional, observational, time and motion study. <p>Setting Community pharmacies in Western Australia and New South Wales, Australia. <p>Participants Currently registered and practising pharmacists were approached using snowball sampling and selected ...
    • Medication adherence among persons with coronary heart disease and associations with blood pressure and low-density-lipoprotein-cholesterol 

      Pedersen, Elisabeth; Primicerio, Raul; Halvorsen, Kjell H.; Eggen, Anne Elise; Garcia, Beate Hennie; Schirmer, Henrik; Waaseth, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-21)
      Purpose - To describe medication adherence to lipid-lowering drugs (LLDs), antihypertensive drugs, and acetylsalicylic acid (ASA) among persons with coronary heart disease (CHD) and explore its association with low-density-lipoprotein (LDL)-cholesterol, and systolic and diastolic blood pressure.<p> <p>Methods - Based on record linkage between the seventh wave of the Tromsø Study and the Norwegian ...
    • Effect of antiangiogenic therapy on tumor growth, vasculature and kinase activity in basal- and luminal-like breast cancer xenografts 

      Lindholm, Evita Maria; Kristian, Alexandr; Nalwoga, Hawa; Kruger, Kristi; Nygård, Ståle; Akslen, Lars A.; Mælandsmo, Gunhild (Journal article; Tidsskriftartikkel; Peer reviewed, 2012-03-31)
      Several clinical trials have investigated the efficacy of bevacizumab in breast cancer, and even if growth inhibiting effects have been registered when antiangiogenic treatment is given in combination with chemotherapy no gain in overall survival has been observed. One reason for the lack of overall survival benefit might be that appropriate criteria for selection of patients likely to respond ...
    • Toxicity Assessment of Resveratrol Liposomes-in-Hydrogel Delivery System by EpiVaginal Tissue Model 

      Jøraholmen, May Wenche; Damdimopoulou, Pauliina; Acharya, Ganesh; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-17)
      The natural polyphenol resveratrol (RES) has shown great potential as an antimicrobial, including against microbes associated with vaginal infections. To fully exploit the activities of RES, an all-natural ingredients formulation for RES delivery at vaginal site has been developed, namely liposomes loaded with RES, incorporated into a chitosan hydrogel as secondary vehicle. Although considered ...
    • Functional analysis of signaling pathways activated by Anisomycin and Dexamethasone in two different breast cancer cell lines 

      Brown, Rosaline (Mastergradsoppgave; Master thesis, 2022-05-12)
      While targeted therapy exists for ER-positive breast cancers, the treatment option for TNBC is conventional chemotherapy giving a poorer prognosis. It is therefore of interest to study molecular mechanisms and differences between MCF7 (ER-positive) and MDA-MB-231 (ER, PR, and HER2- negative). These cell lines are in vitro representative models for luminal A (non-aggressive) and basal-like (aggressive) ...
    • The pH-Responsive Liposomes—The Effect of PEGylation on Release Kinetics and Cellular Uptake in Glioblastoma Cells 

      Rustad, Eirik André Lindeløff; von Hofsten, Susannah; Kumar, Robin; Lænsman, Eirik Abrahamsen; Berge, Gerd; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-05-25)
      Nanomedicine has been, to a certain degree, a success story in the development of superior anticancer therapies. However, there are tumors that remain a huge challenge for nanoformulations, for instance, brain tumors such as glioblastoma, the most common and aggressive brain tumor. To utilize the fact that such tumors are characterized by an acidic extracellular environment, we selected pH-responsive ...
    • Hvor nyttige er nye legemiddelbehandlinger egentlig? 

      Moss, Johan Mikkelborg (Mastergradsoppgave; Master thesis, 2021-05-21)
      Introduksjon: Legemidler blir ofte presentert i media som supermedisiner og gir inntrykket av at helseeffekten er enorm. Hvorvidt fremstillingen i media speiler virkeligheten er uklart. Statens legemiddelverk (SLV) metodevurderer legemidler for å undersøke om de er bedre enn nåværende behandling. Metodevurderingene inneholder ofte informasjon om QALY-gevinst. Hensikt: Primærmålet er å undersøke ...
    • Liposomal formulations for membrane active antimicrobials – Assuring safety through an optimised drug delivery system 

      Pettersen, Ann Kristin (Master thesis; Mastergradsoppgave, 2020-05-13)
      Skin and soft tissue infections (SSTIs) and chronic wounds are major challenges for the healthcare system worldwide. The additional rapid development of antibacterial resistance and lack of successful treatment strategies increase the chance for infected chronic wounds to be fatal for the patient. Therefore, there is a need for more efficient dermal antimicrobial therapies. A class of promising ...
    • Molekylmodelleringsstudium av G-protein koblet østrogenreseptor (GPER) 

      Smith, Maria (Mastergradsoppgave; Master thesis, 2017-05-15)
      G-protein koblet østrogenreseptor (GPER) har vist å ha en fysiologisk rolle i det reproduktive systemet, nervesystemet, endokrine systemet, immunsystemet og karsystemet. Den har også patofysiologisk rolle i flere forskjellige sykdommer inkludert kreft. G-protein koblet østrogenreseptor har blitt identifisert i nesten alle systemer i kroppen. Dermed er det en stor interesse for å få kjennskap til ...
    • The search of new negative allosteric GABAB receptor modulators using in silico and in vitro approaches 

      Hadi, Ali Muataz (Mastergradsoppgave; Master thesis, 2020-05-14)
      γ-aminobutyric acid (GABA) is the primary inhibitory neurotransmitter in the CNS. GABA exerts its function on both ionotropic ligand-gated GABAA receptors and metabotropic GABAB G-protein coupled receptors (GPCRs). Disruption in the GABAergic system has been associated with numerous neurological and psychiatric disorders in humans. These include developmental dysfunctions, epilepsy, sleep disorders, ...
    • Microfluidized liposomes for cellular uptake imaging: Optimization 

      Mork, Silje (Mastergradsoppgave; Master thesis, 2020-05-14)
      Liposomes as drug delivery systems exhibit great potential to deliver active molecules to the targeted site depending on their various characteristics. However, these characteristics are dependent on the manufacturing procedures applied to prepare liposomes. Especially difficult is assurance of reproducible production in large volumes. Therefore an efficient up-scalable method for production of ...
    • Bruk av antibakterielle midler blant barn 0-3 år etter fødselssesong og fødselsår i Norge 2004-2017 

      Beckstrøm, Sanna (Mastergradsoppgave; Master thesis, 2019-05-14)
      Bakgrunn: Ettårig periodeprevalens for bruk av antibakterielle midler til barn i Norge er høyest før tre års alder. Forskriving av antibakterielle midler påvirkes av mange faktorer, og kartlegging av disse kan gi mulighet til å målrette intervensjoner for å redusere forskriving. Formål: De primære målene var å undersøke om fødselssesong predikerer alder ved første utlevering av antibakterielle midler, ...
    • Electrospinning of nanofibers with chitosan and B-glucan as active wound healing ingredients: Optimization and characterization 

      Olaussen, Julie Wik (Mastergradsoppgave; Master thesis, 2020-05-14)
      Wound healing is a complex and highly regulated process, vital for preserving the barrier function of the skin. However, several underlying pathologies have the ability to influence the cascade of events involved in this process, resulting in the development of chronic wounds. The heterogeneous nature of chronic wounds increases the requirements of novel wound dressings. Hence, the development of ...
    • High throughput lipolysis-permeation in vitro model employing the mucus-PVPA barriers to assess drug absorption from lipid-based delivery systems 

      Brurok, Sunniva (Mastergradsoppgave; Master thesis, 2020-05-14)
      In vitro lipolysis models are commonly used to assess the performance of lipid-based drug delivery systems (LbDDSs) in terms of their drug absorption potential; however, this in vitro approach has not always shown to correlate well with in vivo data. Several studies suggest that adding an absorption step to the in vitro lipolysis model would give a better estimation of absorption for drugs incorporated ...
    • Virtual screening and in vitro evaluation of putative positive allosteric modulators of the GABAB receptor 

      Issifou, Ibrahim Toure (Mastergradsoppgave; Master thesis, 2020-05-14)
      -aminobutyric acid (GABA) is the chief inhibitory neurotransmitter of the central nervous system (CNS). GABA exhibits its function by binding to either the ionotropic GABAA receptor or the metabotropic GABAB receptor, causing a decrease in activity in the nervous system. Disruption in the GABAergic system has been associated with various neurological conditions, including Alzheimer’s disease, anxiety, ...
    • Fitness costs of various mobile genetic elements in Enterococcus faecium and Enterococcus faecalis 

      Starikova, Irina; Al-Haroni, Mohammed; Werner, Guido; Roberts, Adam P.; Nielsen, Kåre M.; Johnsen, Pål Jarle (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-07-05)
      Objectives: To determine the fitness effects of various mobile genetic elements (MGEs) in Enterococcus faecium and Enterococcus faecalis when newly acquired. We also tested the hypothesis that the biological cost of vancomycin resistance plasmids could be mitigated during continuous growth in the laboratory.<p> <p>Methods: Different MGEs, including two conjugative transposons (CTns) of the Tn916 ...