Viser treff 341-360 av 690

    • Chitosan Lecithin Nanoparticles with New Chemical Entity. Antimicrobial Evaluation 

      Hemmingsen, Lisa Myrseth (Master thesis; Mastergradsoppgave, 2015-05-13)
      Chronic wounds are often colonized with biofilm-producing bacteria, such as Staphylococcus epidermidis, and these wounds often have high degree of complexity and are often challenging to treat. There is a high resistance to the traditional antimicrobial treatments and that is why these infections sometimes are persistent. Photodynamic therapy (PDT) is proposed as a potential solution to the problems ...
    • Collateral sensitivity in clinical Escherichia coli isolates resistant to ciprofloxacin 

      Lam, Chon Kit (Master thesis; Mastergradsoppgave, 2016-05-13)
      The increase in antimicrobial resistance in bacteria is a serious problem in public heath limiting the efficacy of available antimicrobials for treatment of infections. E. coli is the most frequent cause of uncomplicated urinary tract infections. Ciprofloxacin is an important antimicrobial for treatment of uncomplicated urinary tract infections. Unfortunately, resistance to ciprofloxacin is commonly ...
    • Karakteristika ved ulike behandlingskategorier av diabetes. Kvinner og kreft-studien 

      Sandvik, Line Anita (Master thesis; Mastergradsoppgave, 2016-05-12)
      Overvekt og fedme øker i samfunnet og hånd i hånd går den nye folkesykdommen type 2 diabetes. Type 2 diabetes er en alvorlig kronisk sykdom som rammer mange mennesker i hele verden. Det estimeres en fordobling av forekomsten av diabetes fra år 2000 og til år 2030. På grunnlag av dette er det viktigere enn noen gang å finne løsninger og metoder for å eventuelt forebygge eller utsette sykdommen. Det ...
    • Chitosan Lecithin Nanoparticles with New Chemical Entity. Nanotoxicity Evaluation 

      Kangu, Lloyd Mbugua (Master thesis; Mastergradsoppgave, 2016-05-12)
      Chronic skin wounds are an exponentially increasing problem on a world basis, and are often hard to treat due to bacterial biofilm formation and resistance to different antibiotic treatments. Antimicrobial photodynamic therapy (aDPT) shows promise in resolving this issue, but clinical based treatments have yet to be established although photodynamic therapy is used for other conditions. A new ...
    • Metallo-β-lactamase inhibitors by bioisosteric replacement: preparation, activity and binding 

      Skagseth, Susann; Akhter, Sundus; Paulsen, Marianne H; Muhammad, Zeeshan; Samuelsen, Ørjan; Leiros, Hanna-Kirsti S.; Bayer, Annette (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-14)
      Bacterial resistance is compromising the use of β-lactam antibiotics including carbapenems. The main resistance mechanism against β-lactams is hydrolysis of the β-lactam ring mediated by serine- or metallo-β-lactamases (MBLs). Although several inhibitors of MBLs have been reported, none has been developed into a clinically useful inhibitor. Mercaptocarboxylic acids are among the most prominent ...
    • Interdisciplinary collaboration across secondary and primary care to improve medication safety in the elderly (IMMENSE study): study protocol for a randomised controlled trial 

      Johansen, Jeanette Schultz; Havnes, Kjerstin; Halvorsen, Kjell H.; Haustreis, Stine-Mari; Skaue, Lillann Wilsgård; Kamycheva, Elena; Mathiesen, Liv; Viktil, Kirsten Kilvik; Granås, Anne Gerd; Garcia, Beate Hennie (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-23)
      <p><i>Introduction:</i> Drug-related problems (DRPs) are common in the elderly, leading to suboptimal therapy, hospitalisations and increased mortality. The integrated medicines management (IMM) model is a multifactorial interdisciplinary methodology aiming to optimise individual medication therapy throughout the hospital stay. IMM has been shown to reduce readmissions and drug-related hospital ...
    • Old drug, new wrapping – A possible comeback for chloramphenicol? 

      Ingebrigtsen, Sveinung Gaarden; Didriksen, Alena; Johannessen, Mona; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-12)
      The antimicrobial drug chloramphenicol (CAM) exhibits activity against resistant bacteria, such as methicillin-resistant Staphylococcus aureus (MRSA). However, its use has been limited due to its toxicity. As the threat of antibiotic resistance continues to grow, a promising approach might be to increase the use of historical antimicrobial agents that demonstrate clinical efficacy, but are hampered ...
    • PEGylated liposomes for topical vaginal therapy improve delivery of interferon alpha 

      Jøraholmen, May Wenche; Basnet, Purusotam; Acharya, Ganesh; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-11)
      Recent studies regarding mucosal drug delivery indicate that nanosystems with surface-available polyethylene glycol (PEG) are able to penetrate mucus barrier, assure closer contact with the epithelium, and improve drug delivery to vagina. In the present work, we developed the mucus-penetrating PEGylated liposomes containing interferon alpha-2b (IFN α-2b), destined to provide localized therapy for ...
    • Quality of medication information in discharge summaries from hospitals: an audit of electronic patient records 

      Garcia, Beate Hennie; Djønne, Berit K; Skjold, Frode; Mellingen, Ellen Marie; Aag, Trine Iversen (Journal article; Tidsskriftartikkel, 2017-11-03)
      Background: Low quality of medication information in discharge summaries from hospitals may jeopardize optimal therapy and put the patient at risk for medication errors and adverse drug events. <br> <p> Objective: To audit the quality of medication information in discharge summaries and explore factors associated with the quality. Setting Helgelandssykehuset Mo i Rana, a rural hospital in central ...
    • Safety and efficiency of a new generic package labelling: A before and after study in a simulated setting 

      Garcia, Beate Hennie; Elenjord, Renate; Bjørnstad, Camilla Hilda; Halvorsen, Kjell H.; Hortemo, Sigurd; Madsen, Steinar (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-20)
      Background: Medication errors are frequent and may cause harm to patients and increase healthcare expenses. <p> Aim: To explore whether a new labelling influences time and errors when preparing medications in accordance with medication charts in an experimental setting. <p> Method: We carried out an uncontrolled before and after study with 3 months inbetween experiments. Phase I used original ...
    • Synthesis of a novel tripeptidomimetic scaffold and biological evaluation for CXC chemokine receptor 4 (CXCR4) antagonism 

      Baumann, Markus; Nome, Lina Marie; Zachariassen, Zack Georg; Karlshøj, Stepfanie; Fossen, Torgils; Rosenkilde, Mette M.; Våbenø, Jon; Haug, Bengt Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-17)
      We here report the preparation of a new 2,6,8-trisubstituted bicyclic tripeptidomimetic scaffold through TFA-mediated cyclization of a linear precursor containing three side chains. The introduction of a triphenylmethyl-protected thiol into carboxylic acid containing building blocks through sulfa Michael additions onto α,β-unsaturated hexafluoroisopropyl esters is described. The stereoselectivity ...
    • Molecular signatures reflecting microenvironmental metabolism and chemotherapy-induced immunogenic cell death in colorectal liver metastases 

      Østrup, Olga; Dagenborg, Vegar Johansen; Rødland, Einar Andreas; Skarpeteig, Veronica; Silwal-Pandit, Laxmi; Grzyb, Krzysztof; Berstad, Audun Elnæs; Fretland, Åsmund Avdem; Mælandsmo, Gunhild; Børresen-Dale, Anne-Lise; Ree, Anne Hansen; Edwin, Bjørn; Nygaard, Vigdis; Flatmark, Kjersti (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-07-18)
      Background: Metastatic colorectal cancer (CRC) is associated with highly variable clinical outcome and response to therapy. The recently identified consensus molecular subtypes (CMS1-4) have prognostic and therapeutic implications in primary CRC, but whether these subtypes are valid for metastatic disease is unclear. We performed multi-level analyses of resectable CRC liver metastases (CLM) to ...
    • 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). ...
    • Sprayable Carbopol hydrogel with soluble beta-1,3/1,6-glucan as an active ingredient for wound healing – Development and in-vivo evaluation 

      Grip, Jostein; Engstad, Rolf Einar; Skjærveland, Ingrid; Skalko-Basnet, Natasa; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-21)
      Chronic wounds represent a significant health problem worldwide. There is a need for advanced- and cost-efficient wound healing products able to increase patient comfort and reduce the healing time. The aim of this study was to develop a sprayable hydrogel dressing with beta-glucan (βG) as the active ingredient, targeting future application in the treatment of both chronic and burn wounds. The βG ...
    • Molecular transfer to Atlantic salmon ovulated eggs using liposomes 

      Kumari, Jaya; Flaten, Gøril Eide; Skalko-Basnet, Natasa; Tveiten, Helge (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-06-15)
      The delivery of exogenous biomolecules into teleost eggs is currently mostly relying on the manual microinjection methods, which, due to their high costs and low throughput, are not economically feasible for large-scale aquaculture applications. The main objective of this study was to develop a convenient, simple immersion delivery model for unfertilized Atlantic salmon (Salmo salar L.) eggs using ...
    • Metabolic reprogramming supports the invasive phenotype in malignant melanoma 

      Bettum, Ingrid Johanne; Gorad, Saurabh Sayajirao; Barkovskaya, Anna; Pettersen, Solveig; Moestue, Siver Andreas; Vasiliauskaite, Kotryna; Tenstad, Ellen; Øyjord, Tove Ragnhild; Risa, Øystein; Nygaard, Vigdis; Mælandsmo, Gunhild; Prasmickaite, Lina (Journal article; Tidsskriftartikkel, 2015)
      Invasiveness is a hallmark of aggressive cancer like malignant melanoma, and factors involved in acquisition or maintenance of an invasive phenotype are attractive targets for therapy. We investigated melanoma phenotype modulation induced by the metastasis-promoting microenvironmental protein S100A4, focusing on the relationship between enhanced cellular motility, dedifferentiation and metabolic ...
    • Dissemination and Characteristics of a Novel Plasmid-Encoded Carbapenem-Hydrolyzing Class D β-Lactamase, OXA-436, Found in Isolates from Four Patients Involving Six Different Hospitals in Denmark. 

      Samuelsen, Ørjan; Hansen, Frank; Aasnæs, Bettina; Hasman, Henrik; Lund, Bjarte Aarmo; Leiros, Hanna-Kirsti S.; Lilje, Berit; Janice, Jessin; Jakobsen, Lotte; Littauer, Pia; Søes, Lillian M; Holzknecht, Barbara J.; Andersen, Leif P; Stegger, Marc; Andersen, Paal S.; Hammerum, Anette M. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-10-23)
      The diversity of OXA-48-like carbapenemases are continually expanding. In this study, we describe the dissemination and characteristics of a novel class D carbapenemase (CHDL) named OXA-436. In total, six OXA-436-producing Enterobacteriaceae isolates including Enterobacter asburiae (n=3), Citrobacter freundii (n=2) and Klebsiella pneumoniae (n=1) were identified in four patients in the period between ...
    • Prognostic significance of S100A4-expression and subcellular localization in early-stage breast cancer 

      Egeland, Eivind Valen; Pedersen, Kjetil Boye; Park, Daehoon; Synnestvedt, Marit; Sauer, Torill; The Oslo Breast Cancer Consortium (OSBREAC); Naume, Bjørn; Borgen, Elin; Mælandsmo, Gunhild (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-01-05)
      Purpose: <br> Prognostic factors are useful in order to identify early-stage breast cancer patients who might benefit from adjuvant treatment. The metastasis-promoting protein S100A4 has previously been associated with poor prognosis in breast cancer patients. The protein is expressed in diverse subcellular compartments, including the cytoplasm, extracellular space, and nucleus. Nuclear expression ...
    • Influence of chain length on the activity of tripeptidomimetic antagonists for CXC chemokine receptor 4 (CXCR4) 

      Baumann, Markus; Hussain, Mohammad Musarraf; Henne, Nina; Garrote, Daniel Moya; Karlshøj, Stefanie; Fossen, Torgils; Rosenkilde, Mette M.; Våbenø, Jon; Haug, Bengt Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-21)
      Here we report a series of close analogues of our recently published scaffold-based tripeptidomimetic CXCR4 antagonists, containing positively charged guanidino groups in R1 and R2, and an aromatic group in R3. While contraction/elongation of the guanidine carrying side chains (R1 and R2) resulted in loss of activity, introduction of bromine in position 1 on the naphth-2-ylmethyl moiety (R3 ...
    • Use of a Commercially Available Microarray to Characterize Antibiotic-Resistant Clinical Isolates of Klebsiella pneumoniae 

      Charnock, Colin; Samuelsen, Ørjan; Nordlie, Anne-Lise; Hjeltnes, Bjarne (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-22)
      Commercially available microarray (IDENTIBAC AMR-ve) for the detection of antibiotic resistance determinants was investigated for its potential to genotype 30 clinical isolates and two control strains of Klebsiella pneumoniae. Resistance profiles and the production of extended-spectrum b-lactamases were determined by disc diffusion and the results were compared with the microarray profiles in order ...