Viser treff 110-129 av 358

    • Electrospun Amphiphilic Nanofibers as Templates for In Situ Preparation of Chloramphenicol-Loaded Liposomes 

      Laidmae, Ivo; Meos, Andres; Alainezhad Kjærvik, Irja; Ingebrigtsen, Sveinung Gaarden; Skalko-Basnet, Natasa; Kirsimäe, Kalle; Romann, Tavo; Joost, Urmas; Kisand, Vambola; Kogermann, Karin (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-20)
      The hydration of phospholipids, electrospun into polymeric nanofibers and used as templates for liposome formation, offers pharmaceutical advantages as it avoids the storage of liposomes as aqueous dispersions. The objective of the present study was to electrospin and characterize amphiphilic nanofibers as templates for the preparation of antibiotic-loaded liposomes and compare this method with ...
    • Elevating Safe Use of Over-The-Counter Medications in Older Adults: A Narrative Review of Pharmacy Involved Interventions and Recommendations for Improvement 

      Lehnbom, Elin; Berbakov, Maria E.; Hoffins, Emily L.; Moon, Jukrin; Welch, Lauren; Chui, Michelle A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-20)
      Over-the-counter (OTC) medications are products that have been made easily accessible to allow patients to treat common ailments without a prescription and the cost of a doctor’s visit. These medications are generally considered safe; however, there is still a potential for these medications to lead to adverse health outcomes. Older adults (ages 50+) are especially susceptible to these adverse health ...
    • Emergence and dissemination of antimicrobial resistance in Escherichia coli causing bloodstream infections in Norway in 2002–17: a nationwide, longitudinal, microbial population genomic study 

      Gladstone, Rebecca Ashley; McNally, Alan; Pöntinen, Anna Kaarina; Tonkin-Hill, Gerry; Lees, John A.; Skytén, Kusti Onni; Cléon, Francois Pierre Alexandre; Christensen, Martin Owczarek Korsner; Haldorsen, Bjørg; Bye, Kristina K.; Gammelsrud, Karianne Wiger; Hjetland, Reidar; Kümmel, Angela; Larsen, Hege; Lindemann, Paul Christoffer; Löhr, Iren Høyland; Marvik, Åshild; Nilsen, Einar; Noer, Marie Therese; Simonsen, Gunnar Skov; Steinbakk, Martin; Tofteland, Ståle; Vattøy, Marit; Bentley, Stephen D.; Croucher, Nicholas J.; Parkhill, Julian; Johnsen, Pål Jarle; Samuelsen, Ørjan; Corander, Jukka (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-10)
      Background - The clonal diversity underpinning trends in multidrug resistant Escherichia coli causing bloodstream infections remains uncertain. We aimed to determine the contribution of individual clones to resistance over time, using large-scale genomics-based molecular epidemiology.<p> <p>Methods - This was a longitudinal, E coli population, genomic, cohort study that sampled isolates from ...
    • Empirical prescribing of penicillin G/V reduces risk of readmission of hospitalized patients with community-acquired pneumonia in Norway: a retrospective observational study 

      Høgli, June Utnes; Garcia, Beate Hennie; Svendsen, Kristian; Skogen, Vegard; Småbrekke, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-06-15)
      <i>Background</i> - Norwegian guideline recommendations on first-line empirical antibiotic prescribing in hospitalised patients with community-acquired pneumonia (CAP) are penicillin G/V in monotherapy, or penicillin G in combination with gentamicin (or cefotaxime) in severely ill patients. The aim of this study was to explore how different empirical antibiotic treatments impact on length of hospital ...
    • ERK3 regulates TDP2-mediated DNA damage response and chemoresistance in lung cancer cells 

      Bian, Ka; Muppani, Naveen Reddy; Elkhadragy, Lobna; Wang, Wei; Zhang, Cheng; Chen, Tenghui; Jung, Sungyun; Seternes, Ole Morten; Long, Weiwen (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-12-19)
      Posttranslational modifications (PTMs), such as phosphorylation and ubiquitination, play critical regulatory roles in the assembly of DNA damage response proteins on the DNA damage site and their activities in DNA damage repair. Tyrosyl DNA phosphodiesterase 2 (TDP2) repairs Topoisomerase 2 (Top2)-linked DNA damage, thereby protecting cancer cells against Top2 inhibitors-induced growth inhibition ...
    • Escherichia coli Sequence Type 410 Is Causing New International High-Risk Clones 

      Roer, Louise; Overballe-Petersen, Søren; Hansen, Frank; Schønning, Kristian; Wang, Mikala; Røder, Bent L; Hansen, , Dennis S; Justesen, Ulrik S; Andersen, Leif P; Fulgsang-Damgaard, David; Hopkins, Katie L; Woodford, Neil; Falgenhauer, Linda; Chakraborty, Trinad; Samuelsen, Ørjan; Sjöström, Karin; Johannesen, Thor B; Ng, Kim; Nielsen, Jens; Ethelberg, Steen; Stegger, Marc; Hammerum, Anette M.; Hasman, Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-07-18)
      <i>Escherichia coli</i> sequence type 410 (ST410) has been reported worldwide as an extraintestinal pathogen associated with resistance to fluoroquinolones, third-generation cephalosporins, and carbapenems. In the present study, we investigated national epidemiology of ST410 <i>E. coli</i> isolates from Danish patients. Furthermore, <i>E. coli</i> ST410 was investigated in a global context to provide ...
    • Estimating treatment prolongation for persistent infections 

      Martinecz, Antal; Abel zur Wiesch, Pia (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-09)
      Treatment of infectious diseases is often long and requires patients to take drugs even after they have seemingly recovered. This is because of a phenomenon called persistence, which allows small fractions of the bacterial population to survive treatment despite being genetically susceptible. The surviving subpopulation is often below detection limit and therefore is empirically inaccessible but can ...
    • Evaluation by metabolic profiling and in vitro autoradiography of two promising GnRH‐receptor ligands for brain SPECT imaging 

      Fjellaksel, Richard; Moldes-Anaya, Angel; Vasskog, Terje; Oteiza, Ana; Martin-Armas, Maria Montserrat; Hjelstuen, Ole Kristian; Hansen, Jørn H; Riss, Patrick; Sundset, Rune (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-18)
      The increased expression of gonadotropin releasing hormone receptor (GnRH‐R) in brain has been strongly linked to Alzheimer disease. Therefore, the development of radiolabeled imaging agents for GnRH‐R is relevant for early diagnosis of Alzheimer disease. We have recently disclosed the discovery of two promising compounds displaying nanomolar‐range affinity for the GnRH‐R. In the present study, a ...
    • Evidence for limited adaptive responsiveness to large-scale spatial variation of habitat quality 

      Werner, Karl-Michael; Taylor, Marc; Diekmann, Rabea; Lloret, Josep; Möllmann, Christian; Primicerio, Raul; Fock, Heino O. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-24)
      The ability of organisms to adapt their foraging behaviour to spatial variations in food availability and habitat quality is crucial to maximize energy intake and hence fitness. Under ideal conditions, habitat selection should result in a spatial distribution of individuals such that their fitness (energy reserves or condition) is roughly equal across habitats of varying quality. Using 11 yr of field ...
    • Evolutionary and functional history of the Escherichia coli K1 capsule 

      Alonso, Sergio Arredondo; Blundell-Hunter, George; Fu, Zuyi; Gladstone, Rebecca Ashley; Fillol-Salom, Alfred; Loraine, Jessica; Cloutman-Green, Elaine; Johnsen, Pål Jarle; Samuelsen, Ørjan; Pöntinen, Anna Kaarina; Cleon, Francois Pierre Alexandre; Chavez-Bueno, Susana; De la Cruz, Miguel A.; Ares, Miguel A.; Vongsouvath, Manivanh; Chmielarczyk, Agnieszka; Horner, Carolyne; Klein, Nigel; McNally, Alan; Reis, Joice N.; Penadés, José R.; Thomson, Nicholas R.; Corander, Jukka; Taylor, Peter W.; McCarthy, Alex J. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-15)
      Escherichia coli is a leading cause of invasive bacterial infections in humans. Capsule polysaccharide has an important role in bacterial pathogenesis, and the K1 capsule has been firmly established as one of the most potent capsule types in E. coli through its association with severe infections. However, little is known about its distribution, evolution and functions across the E. coli phylogeny, ...
    • Evolutionary Instability of Collateral Susceptibility Networks in Ciprofloxacin-Resistant Clinical Escherichia coli Strains 

      Sørum, Vidar; Øynes, Emma Lu; Sollied Møller, Anna; Harms, Klaus; Samuelsen, Ørjan; Podnecky, Nicole L.; Johnsen, Pål Jarle (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-07)
      ABSTRACT Collateral sensitivity and resistance occur when resistance development toward one antimicrobial either potentiates or deteriorates the effect of others. Previous reports on collateral effects on susceptibility focus on newly acquired resistance determinants and propose that novel treatment guidelines informed by collateral networks may reduce the evolution, selection, and spread of ...
    • The Expanded Role of Chitosan in Localized Antimicrobial Therapy 

      Hemmingsen, Lisa Myrseth; Skalko-Basnet, Natasa; Jøraholmen, May Wenche (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-08)
      Chitosan is one of the most studied natural origin polymers for biomedical applications. This review focuses on the potential of chitosan in localized antimicrobial therapy to address the challenges of current rising antimicrobial resistance. Due to its mucoadhesiveness, chitosan offers the opportunity to prolong the formulation residence time at mucosal sites; its wound healing properties open ...
    • Exploring stakeholders' perspectives on the quality of services provided through community pharmacies 

      Jakobsen, Ann Helen; Småbrekke, Lars; Chen, Timothy F.; Halvorsen, Kjell H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-02)
      Introduction - It is important to understand the factors impacting the quality of services provided through community pharmacies. Exploring how key stakeholders perceive good quality in these services is a logical first step. This could also inform the development of quality measures, such as quality indicators (QIs).<p> <p>Aim - To identify key stakeholders' perspectives on the quality of services ...
    • Expression of S100A4, ephrin-A1 and osteopontin in non-small cell lung cancer 

      Rud, Ane Kristine Kongsgaard; Lund-Iversen, Marius; Berge, Gisle; Brustugun, Odd Terje; Solberg, Steinar; Mælandsmo, Gunhild; Pedersen, Kjetil Boye (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      The metastasis-promoting protein S100A4 induces expression of ephrin-A1 and osteopontin in osteosarcoma cell lines. The aim of this study was to investigate S100A4-mediated stimulation of ephrin-A1 and osteopontin in non-small cell lung cancer (NSCLC) cell lines, and to characterize the expression of these biomarkers in primary tumor tissue from NSCLC patients. Four NSCLC cell lines were treated ...
    • Fibroblast-induced switching to the mesenchymal-like phenotype and PI3K/mTOR signaling protects melanoma cells from BRAF inhibitors 

      Vasiliauskaite, Kotryna; Fleten, Karianne Giller; Barkovskaya, Anna; Nygaard, Vigdis; Haugen, Mads Haugland; Engesæter, Birgit Øvstebø; Mælandsmo, Gunhild; Prasmickaite, Lina (Journal article; Tidsskriftartikkel; Peer reviewed, 2016)
      The knowledge on how tumor-associated stroma influences efficacy of anti-cancer therapy just started to emerge. Here we show that lung fibroblasts reduce melanoma sensitivity to the BRAF inhibitor (BRAFi) vemurafenib only if the two cell types are in close proximity. In the presence of fibroblasts, the adjacent melanoma cells acquire de-differentiated mesenchymal-like phenotype. Upon treatment with ...
    • First in vivo evaluation of a potential SPECT brain radiotracer for the gonadotropin releasing hormone receptor 

      Fjellaksel, Richard; Oteiza, Ana; Martin, armas maria montserrat; Riss, Patrick; Hjelstuen, Ole Kristian; Kuttner, Samuel; Hansen, Jørn H; Sundset, Rune (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-09)
      <p><i>Objectives</i>: In vivo evaluations of a gonadotropin releasing hormone-receptor single photon emission computed tomography radiotracer for non-invasive detection of gonadotropin releasing homone-receptors in brain.</p> <p><i>Results</i>: We have used a simple, robust and high-yielding procedure to radiolabel an alpha-halogenated bioactive compound with high radiochemical yield. Literature ...
    • 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 ...
    • Following the fate of dye-containing liposomes in vitro 

      Cauzzo, Jennifer; Nystad, Mona; Holsæter, Ann Mari; Basnet, Purusotam; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-07-09)
      The rather limited success of translation from basic research to clinical application has been highlighted as a major issue in the nanomedicine field. To identify the factors influencing the applicability of nanosystems as drug carriers and potential nanomedicine, we focused on following their fate through fluorescence-based assays, namely flow cytometry and imaging. These methods are often used to ...
    • Fractional integral-like processing in retinal cones reduces noise and improves adaptation 

      Martinecz, Antal; Niitsuma, Mihoko (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-04)
      In the human retina, rod and cone cells detect incoming light with a molecule called rhodopsin. After rhodopsin molecules are activated (by photon impact), these molecules activate the rest of the signalling process for a brief period of time until they are deactivated by a multistage process. First, active rhodopsin is phosphorylated multiple times. Following this, they are further inhibited by the ...
    • From Paper to E-Prescribing of Multidose Drug Dispensing: A Qualitative Study of Workflow in a Community Care Setting 

      Jøsendal, Anette Vik; Bergmo, Trine Strand (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-16)
      E-prescribing is now widespread and, in some countries, has completely replaced paper prescriptions. In Norway, almost all prescribing is electronic, except for multidose drug dispensing (MDD), which is still sent to the pharmacy by fax or ordinary mail. MDD is an adherence aid used by one-third of all patients receiving home care services. In this paper, we present results from a qualitative study ...