• Bacillus anthracis gamma phage lysis among soil bacteria: An update on test specificity 

      Kolton, Cari B; Podnecky, Nicole L.; Shadomy, Sean V; Gee, Jay E; Hoffmaster, Alex R (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-16)
      Background: <br> Bacillus anthracis, which causes anthrax in humans and animals, is enzootic in parts of the U.S. state of Texas where cases are typically reported in animals annually. The gamma phage lysis assay is a common diagnostic method for identifcation of B. anthracis and is based on the bacterium’s susceptibility to lysis. This test has been shown to be 97% specifc for B. anthracis, as ...
    • Bacterial diversity in faeces from polar bear (Ursus maritimus) in Arctic Svalbard 

      Glad, Trine; Brusetti, Lorenzo; Aars, Jon; Bernhardsen, Pål; Nielsen, Kaare Magne; Andersen, Magnus; Sundset, Monica Alterskjær (Journal article; Tidsskriftartikkel; Peer reviewed, 2010)
      Background Polar bears (Ursus maritimus) are major predators in the Arctic marine ecosystem, feeding mainly on seals, and living closely associated with sea ice. Little is known of their gut microbial ecology and the main purpose of this study was to investigate the microbial diversity in faeces of polar bears in Svalbard, Norway (74-81 degrees N, 10-33 degrees E). In addition the level of blaTEM ...
    • Bacterial evolution on demand 

      Johnsen, Pål Jarle; Gama, João Alves; Harms, Klaus (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-06)
      Bacteria carry antibiotic resistant genes on movable sections of DNA that allow them to select the relevant genes on demand.
    • The bacterial magnesium transporter MgtA reveals highly selective interaction with specific cardiolipin species 

      Weikum, Julia; van Dyck, Jeroen F.; Subramani, Saranya; Klebl, David P.; Storflor, Merete; Muench, Stephen P.; Abel, Sören; Sobott, Frank; Morth, Jens Preben (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-10-23)
      The bacterial magnesium transporter A (MgtA) is a specialized P-type ATPase important for Mg<sup>2+</sup> import into the cytoplasm; disrupted magnesium homeostasis is linked to intrinsic ribosome instability and antibacterial resistance in Salmonella strains. Here, we show that MgtA has functional specificity for cardiolipin 18:1. Still, it reaches maximum activity only in combination with ...
    • Barrierer mot etterlevelse av retningslinjer for helsepersonell i sykehus 

      Evenstad, Berit; Larsen, Lill Sverresdatter; Gravningen, Kirsten Midttun (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-10-28)
      <p><i>Bakgrunn:</i> Kunnskapsbaserte faglige retningslinjer skal bidra til å kvalitetssikre helsetjenesten. Tidligere forskning viser et gap mellom anbefalinger i retningslinjer og klinisk praksis. Få studier har undersøkt etterlevelsen av retningslinjer blant helsepersonell på sykehus etter avsluttet implementering. Denne studien tar utgangspunkt i «Keisersnittprosjektet», et kvalitetsforbedringsprosjekt ...
    • Beta-glucan-loaded nanofiber dressing improves wound healing in diabetic mice 

      Grip, Jostein; Engstad, Rolf Einar; Skjæveland, Ingrid; Skalko-Basnet, Natasa; Isaksson, Johan; Basnet, Purusotam; Holsæter, Ann Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-01)
      The increased prevalence of chronic wounds requires novel treatment options. The aim of this study was to develop a beta-glucan (βG)-loaded nanofiber wound dressing. Nanofibers were prepared using the needle-free Nanospider™ technology, an electrospinning method which enables the production of nanofibers at an industrial scale. The βG was selected as active ingredient based on its confirmed wound ...
    • Bioadhesive Mini-Tablets for Vaginal Drug Delivery 

      Hiorth, Marianne; Nilsen, Susanne; Tho, Ingunn (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-08-27)
    • Biofilm Responsive Zwitterionic Antimicrobial Nanoparticles to Treat Cutaneous Infection 

      Obuobi, Sybil Akua Okyerewa; Phung, Anna Ngoc; Julin, Kjersti; Johannessen, Mona; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-12-16)
      To avert the poor bioavailability of antibiotics during S. aureus biofilm infections, a series of zwitterionic nanoparticles containing nucleic acid nanostructures were fabricated for the delivery of vancomycin. The nanoparticles were prepared with three main lipids: (i) neutral (soy phosphatidylcholine; P), (ii) positively charged ionizable (1,2-dioleyloxy-3-dimethylaminopropane; D), and (iii) ...
    • Biologics: the role of delivery systems in improved therapy 

      Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2014-03-19)
      The beginning of the 21st century saw numerous protein and peptide therapeuticals both on the market and entering the final stages of clinical studies. They represent a new category of biologically originated drugs termed biologics or biologicals. Their main advantages over conventional drugs can be summarized by their high selectivity and potent therapeutic efficacy coupled with limited side ...
    • Biomimetic PVPA in vitro model for estimation of the intestinal drug permeability using fasted and fed state simulated intestinal fluids 

      Naderkhani, Elenaz; Vasskog, Terje; Flaten, Gøril Eide (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06-20)
      A prerequisite for successful oral drug therapy is the drug’s ability to cross the gastrointestinal barrier. Considering the increasing number of new chemical entities in modern drug discovery, reliable and fast in vitro models are required for early and efficient prediction of intestinal permeability. To mimic the intestinal environment, use of biorelevant media may provide valuable information ...
    • Biomimicry of microbial polysaccharide hydrogels for tissue engineering and regenerative medicine - A review 

      Ng, Jian Yao; Obuobi, Sybil Akua Okyerewa; Chua, Mei Ling; Zhang, Chi; Hong, Shiqi; Kumar, Yogesh; Gokhale, Rajeev; Ee, Pui Lai Rachel (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-29)
      Hydrogels as artificial biomaterial scaffolds offer a much favoured 3D microenvironment for tissue engineering and regenerative medicine (TERM). Towards biomimicry of the native ECM, polysaccharides from Nature have been proposed as ideal surrogates given their biocompatibility. In particular, derivatives from microbial sources have emerged as economical and sustainable biomaterials due to their ...
    • Bruk av kosttilskudd blant middelaldrende norske kvinner 

      Waaseth, Marit; Larsen, Hanne Næsvold; May-Britt Storø, Thoresen; Skeie, Guri (Journal article; Tidsskriftartikkel, 2019-03-18)
      <p><i>Formål - </i>Å beskrive forbruksmønsteret av kosttilskudd blant middelaldrende norske kvinner med tanke på sammenheng med brukerkarakteristika, inkludert legemiddelbruk og sosioøkonomiske faktorer. <p><i>Metode - </i>Studien er en tverrsnittsanalyse av spørreskjemadata fra 3231 deltakere (født 1943-57) i Kvinner og kreftstudien. Data ble innsamlet i 2003-2006, responsrate 72 %. <p><i>Resultat ...
    • Ceramide-containing liposomes with doxorubicin: time and cell-dependent effect of C6 and C12 ceramide 

      Øverbye, Anders; Holsæter, Ann Mari; Fusser, Markus; Skalko-Basnet, Natasa; Iversen, Tore Geir; Torgersen, Maria Lyngaas; Sønstevold, Tonje; Engebråten, Olav; Flatmark, Kjersti; Mælandsmo, Gunhild; Skotland, Tore; Sandvig, Kirsten (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-12)
      Doxorubicin, a widely used chemotherapeutic drug, has several potential high- risk side effects including cardiomyopathy. Furthermore, cellular resistance to this drug develops with time. By using liposomes as carrier vesicles both the side effects and drug resistance might be avoided. In this study we have investigated the cytotoxic effect of doxorubicin encapsulated in liposomes with and ...
    • Challenges and Best Practices in Ethical Review of Human and Organizational Factors Studies in Health Technology: a Synthesis of Testimonies 

      Peute, Linda W.; Lichtner, Valentina; Baysari, Melissa T.; Hägglund, Maria; Homco, Juell; Jansen-Kosterink, Stephanie; Jauregui, Ignacio; Kaipio, Johanna; Kuziemsky, Craig E.; Lehnbom, Elin; Leite, Francisca; Lesselroth, Blake; Luna, Daniel; Otero, Carlos; Pedersen, Rune; Pelayo, Sylvia; Santos, Raquel; Silva, Nuno-André; Tyllinen, Mari; Van Velsen, Lex; Zheng, Wu Yi; Jaspers, Monique; Marcilly, Romaric (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-17)
      <i>Objective</i>: Human and Organizational Factors (HOF) studies in health technology involve human beings and thus require Institutional Review Board (IRB) approval. Yet HOF studies have specific constraints and methods that may not fit standard regulations and IRB practices. Gaining IRB approval may pose difficulties for HOF researchers. This paper aims to provide a first overview of HOF study ...
    • Changes in the consumption of antiepileptics and psychotropic medicines after starting low dose naltrexone: A nation-wide register-based controlled before-after study 

      Raknes, Guttorm; Småbrekke, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-21)
      In this controlled before-after study based on data from the Norwegian Prescription Database, we examine whether starting off-label use of Low Dose Naltrexone (LDN) is followed by changes in the consumption of psychotropic medicines including antiepileptics. Patients that collected LDN for the first time in 2013 (N = 11247) were included and stratified into three groups based on LDN exposure. We ...
    • Chapter 11 - Hydrogels as intrinsic antimicrobials 

      Vanić, Željka; Skalko-Basnet, Natasa (Chapter; Bokkapittel, 2019-10-25)
      Hydrogels are currently applied as the vehicles for drugs or active substances, rather than the active contributors to therapeutic activities. With increasing challenges related to antimicrobial resistance against many antibiotics, natural origin hydrogels have become attractive as more than just vehicles. Although many natural polymers exhibit intrinsic antimicrobial properties, these properties ...
    • Characterization and Cytotoxicity Studies of the Rare 21:4 n-7 Acid and Other Polyunsaturated Fatty Acids from the Marine Opisthobranch Scaphander lignarius, Isolated Using Bioassay Guided Fractionation 

      Vasskog, Terje; Andersen, Jeanette hammer; Hansen, Espen; Svenson, Johan (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      The marine opisthobranch Scaphander lignarius has been analyzed in the systematic search for novel bioactive compounds in Arctic marine organisms using bioassay guided fractionation. A number of highly cytotoxic fractions were shown to contain mainly polyunsaturated fatty acids (PUFAs). Selected PUFAs were isolated and identified using both liquid chromatography-mass spectrometry (LC-MS) and nuclear ...
    • Characterization of extracellular polymeric matrix, and treatment of Fusobacterium nucleatum and Porphyromonas gingivalis biofilms with DNase I and proteinase K 

      Mohammed, Marwan; Nerland, Audun Helge; Al-Haroni, Mohammed; Bakken, Vidar (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Background: Biofilms are organized communities of microorganisms embedded in a self-produced extracellular polymeric matrix (EPM), often with great phylogenetic variety. Bacteria in the subgingival biofilm are key factors that cause periodontal diseases; among these are the Gram-negative bacteria Fusobacterium nucleatum and Porphyromonas gingivalis. The objectives of this study were to characterize ...
    • Characterization of Liposomes Using Quantitative Phase Microscopy (QPM) 

      Cauzzo, Jennifer; Jayakumar, Nikhil; Ahluwalia, Balpreet Singh; Ahmad, Azeem; Skalko-Basnet, Natasa (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-21)
      The rapid development of nanomedicine and drug delivery systems calls for new and effective characterization techniques that can accurately characterize both the properties and the behavior of nanosystems. Standard methods such as dynamic light scattering (DLS) and fluorescent-based assays present challenges in terms of system’s instability, machine sensitivity, and loss of tracking ability, among ...