Viser treff 260-279 av 652

    • Gemcitabine-containing liposomes 

      Gravem, Hilde (Master thesis; Mastergradsoppgave, 2006-06-16)
      Gemcitabine, an anticancer agent, is currently in clinical use for the treatment of several types of cancer. Unfortunately, gemcitabine is rapidly metabolised with a short plasma half-life and its cytostatic action is strongly exposure-time dependent. In order to achieve the required concentration over sufficient periods of time, repeated application of relatively high doses is required. This, in ...
    • Gene transfer potential of outer membrane vesicles of Acinetobacter baylyi and effects of stress on vesiculation 

      Fulsundar, Shweta; Harms, Klaus; Flaten, Gøril Eide; Johnsen, Pål Jarle; Chopade, Balu Ananda; Nielsen, Kaare Magne (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
    • Generation of a PAX6 knockout glioblastoma cell line with changes in cell cycle distribution and sensitivity to oxidative stress 

      Hegge, Beate; Sjøttem, Eva; Mikkola, Ingvild (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-02)
      <i><p>Background</i>: The transcription factor PAX6 is expressed in various cancers. In anaplastic astrocytic glioma, PAX6 expression is inversely related to tumor grade, resulting in low PAX6 expression in Glioblastoma, the highest-grade astrocytic glioma. The aim of the present study was to develop a PAX6 knock out cell line as a tool for molecular studies of the roles PAX6 have in attenuating ...
    • Genetic dominance governs the evolution and spread of mobile genetic elements in bacteria 

      Rodríguez-Beltrán, Jerónimo; Sørum, Vidar; Toll-Riera, Macarena; de la Vega, Carmen; Peña-Miller, Rafael; San Millán, Álvaro (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-22)
      Mobile genetic elements (MGEs), such as plasmids, promote bacterial evolution through horizontal gene transfer (HGT). However, the rules governing the repertoire of traits encoded on MGEs remain unclear. In this study, we uncovered the central role of genetic dominance shaping genetic cargo in MGEs, using antibiotic resistance as a model system. MGEs are typically present in more than one copy per ...
    • 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 ...
    • The German ban on GM maize MON810: scientifically justified or unjustified? 

      Bøhn, Thomas; Primicerio, Raul; Traavik, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
    • Glyphosate non-toxicity: the genesis of a scientific fact 

      Cuhra, Marek (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-09-30)
      Repetition of a 1978 experiment on the toxicity of glyphosate chemicals in water-flea Daphnia magna showed surprising results. In the 31 years which had passed between the two series of experiments, the toxicity of glyphosate had apparently become 300 times stronger! Further investigation into this enigmatic paradox discloses unfortunate aspects of laboratory researcher cultures as well as fundamental ...
    • Glyphosate-Residues in Roundup-Ready Soybean Impair Daphnia magna Life-Cycle 

      Cuhra, Marek; Traavik, Terje; Dando, Mickael; Primicerio, Raul; Holderbaum, Daniel Ferreira; Bøhn, Thomas (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-01-30)
      Herbicide tolerant plants such as Roundup-Ready soybean contain residues of glyphosate herbicide. These residues are considered safe and previous animal-feeding-studies have failed to find negative effects related to such chemical residues. The present study tests 8 experimental soy- meal diets as feed in groups (each containing 20 individuals) of test-animals (D. magna). The diets have different ...
    • Glyphosate: too much of a good thing? 

      Cuhra, Marek; Bøhn, Thomas; Cuhra, Petr (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-04-28)
      Although previously accepted as the less toxic alternative, with low impact on animals, farmers as well as consumers who are exposed to residues in food, glyphosate chemicals are now increasingly controversial as new evidence from research is emerging. We argue that specific aspects of the history, chemistry and safety of glyphosate and glyphosate-based herbicides should be thoroughly considered ...
    • Going skin deep: a direct comparison of penetration potential of lipid-based nanovesicles on the isolated perfused human skin flap model 

      Ternullo, Selenia; de Weerd, Louis; Holsæter, Ann Mari; Flaten, Gøril Eide; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel, 2017-09-12)
      Phospholipid-based nanocarriers are attractive drug carriers for improved local skin therapy. In the present study, the recently developed isolated perfused human skin flap (IPHSF) model was used to directly compare the skin penetration enhancing potential of the three commonly used nanocarriers, namely conventional liposomes (CLs), deformable liposomes (DLs) and solid lipid nanoparticles (SLNs). ...
    • Har bakterieidentifikasjon og resistensbestemmelse innvirkning på valg av antibiotikaregime ved bakteriemi? : en studie gjort ved Universitetssykehuset i Nord- Norge 

      Bruvoll, Tina Mari (Master thesis; Mastergradsoppgave, 2008-05-20)
      Bakgrunn: Antibiotikaresistens er i dag blitt et signifikant problem på grunn av vårt misbruk – både overforbruk, underforbruk, feilbruk, manglende compliance, inadekvat dosering og ikke minst en likegyldighet til bruk. For alvorlige infeksjonssykdommer som sepsis kan dette gi dramatiske konsekvenser, da man er avhengig av effektive terapimidler da sykdommen er forbundet med høy morbiditet og ...
    • Helse- og miljørisikovurdering av genmodifisert bomullslinje MON 15985 fra Monsanto (EFSA/GMO/UK/2008/57): Uttalelse fra Faggruppe for genmodifiserte organismer i Vitenskapskomiteen for mattrygghet 

      Berdal, Knut G; Bøhn, Thomas; Clarke, Jihong; Finne, Merethe Aasmo; Holck, Askild Lorentz; Klungland, Helge; Linnestad, Casper; Meadow, Richard; Mikalsen, Arne; Myhr, Anne Ingeborg; Nerland, Audun Helge; Nes, Ingolf; Nielsen, Kaare Magne; Sorteberg, Hilde-Gunn Opsahl; Stabbetorp, Odd Egil; Vikse, Rose (Research report; Forskningsrapport, 2008-11-28)
      <i>Hovedbudskap</i>: Mattilsynet og Direktoratet for naturforvalting (DN) ber Vitenskapskomiteen for mattrygghet om å vurdere den genmodifiserte bomullslinjen MON 15985 til import, prosessering, og til bruk i næringsmidler og fôrvarer. Søknaden gjelder ikke dyrking. Monsanto søkte opprinnelig om godkjenning av bomullslinjen i 2005, men søknaden ble trukket og erstattet av vedlagte søknad i 2008. I ...
    • Helse- og miljørisikovurdering av genmodifisert mais MON 863 til import, prosessering og fôr under EU-direktiv 2001/18 (Notifikasjon C/DE/02/9). Uttalelse fra Faggruppe for genmodifiserte organismer i Vitenskapskomiteen for mattrygghet 

      Andreassen, Åshild Kristine; Brandtzæg, Per; Holck, Askild Lorentz; Junttila, Olavi; Konestabo, Heidi Sjursen; Meadow, Richard; Nielsen, Kaare Magne; Sorteberg, Hilde-Gunn Opsahl; Vikse, Rose (Research report; Forskningsrapport, 2013)
      <p>I forbindelse med forberedelse til implementering av EU-forordning 1829/2003 i norsk rett har Miljødirektoratet (tidligere Direktoratet for Naturforvalting) bedt Mattilsynet om vurderinger av alle genmodifiserte organismer (GMOer) og avledete produkter som inneholder eller består av GMOer som er godkjent under forordning 1829/2003 eller direktiv 2001/18, og som er godkjent for ett eller flere ...
    • 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 ...
    • High-Intensity Exercise Improves Fatigue, Sleep, and Mood in Patients With Axial Spondyloarthritis: Secondary Analysis of a Randomized Controlled Trial 

      Sveaas, Silje Halvorsen; Dagfinrud, Hanne; Berg, Inger Jorid; Provan, Sella Aarrestad; Johansen, Melissa Woll; Pedersen, Elisabeth; Bilberg, Annelie (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-04)
      <i>Objective</i> - Although exercise is recommended in the treatment of axial spondyloarthritis (axSpa), the focus has been on flexibility, and the effect of high-intensity exercises is unknown. The purpose of this study was to investigate the effect of high-intensity exercises on fatigue, sleep, and mood in patients with axSpA.<br><br> <i>Methods</i> - In this secondary analysis of a randomized ...
    • A high-throughput multiplexing and selection strategy to complete bacterial genomes 

      Alonso, Sergio Arredondo; Pöntinen, Anna K.; Cleon, Francois Pierre Alexandre; Gladstone, Rebecca Ashley; Schürch, Anita C.; Johnsen, Pål Jarle; Samuelsen, Ørjan; Corander, Jukka (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-09)
      Background: Bacterial whole-genome sequencing based on short-read technologies often results in a draft assembly formed by contiguous sequences. The introduction of long-read sequencing technologies permits those contiguous sequences to be unambiguously bridged into complete genomes. However, the elevated costs associated with long-read sequencing frequently limit the number of bacterial isolates ...
    • Hormonbehandling og hormonkonsentrasjon hos kvinner behandlet for eggstokkreft 

      Egeberg, Celine Victoria (Master thesis; Mastergradsoppgave, 2016-05-13)
      Epitelial eggstokkreft (EEK) er den 6. mest vanlige kreftformen blant norske kvinner. Det diagnostiseres ca. 450 nye tilfeller per år. Fem års overlevelse har økt og det har derfor vært viktig å se på langtidseffektene som påvirker kvinnene. Kvinnene kommer i en umiddelbar menopause etter kirurgisk fjerning av eggstokkene. Dette gjør også at de ofte opplever mer symptomer og plager enn kvinner som ...
    • Host dependent maintenance of a blaNDM-1-encoding plasmid in clinical Escherichia coli isolates 

      Alves Gama, Joao Pedro; Kloos, Julia Maria; Johnsen, Pål Jarle; Samuelsen, Ørjan (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-09)
      Dissemination of bacterial clones carrying plasmid-mediated resistance genes is a major factor contributing to the increasing prevalence of antibiotic resistance. Understanding the evolution of successful clones and the association to mobile resistance elements are therefore crucial. In this study, we determined the sequence of a 145 kb IncC multi-drug resistance plasmid (pK71-77-1-NDM), harbouring ...
    • 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 ...
    • How will anonymization of simulated clinical data affect the data utility of pharmacoepidemiological studies? 

      Cheang, Chi Kei (Mastergradsoppgave; Master thesis, 2019-05-14)
      Background: The pressure to share more data and being more transparency of clinical study reports has grown and becomes an important topic in recent years. Before clinical data and clinical results can be shared they must undergo anonymization. How anonymization of clinical data affects the utility is poorly-studied, especially in pharmacoepidemiology. Objective: The aim of the study is to describe ...