Viser treff 41-60 av 1144

    • Protonation states of central amino acids in a zinc metalloprotease complexed with inhibitor: Molecular mechanics optimizations and ab initio molecular orbital calculations 

      Ezawa, Takuya; Saito, Ryosuke; Suzuki, Shusuke; Sugiyama, Satoshi; Sylte, Ingebrigt; Kurita, Noriyuki (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-01)
      The zinc-metalloprotease pseudolysin (PLN) secreted from bacteria degrades extracellular proteins to produce bacterial nutrition. Since PLN has a Zn ion at the inhibitor-binding site, the interactions between Zn and PLN residues as well as inhibitor can be significantly changed depending on the protonation states of PLN residues at the inhibitor-binding site. To determine stable protonation states ...
    • Liver X receptors induce antiproliferative effects in basal-like breast cancer 

      Haugen, Mads; von der Lippe Gythfeldt, Hedda; Egeland, Eivind Valen; Svartdal Normann, Lisa; Pandya, Abhilash D.; Vedin, Lise-Lotte; Juell, Siri; Tenstad, Ellen; Øy, Geir Frode; Kristian, Alexandr; Marangoni, Elisabetta; Sørlie, Therese; Steffensen, Knut Rune; Mælandsmo, Gunhild Mari; Engebråten, Olav (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-21)
      Liver X receptors (LXRs) are nuclear transcription factors important in the regulation of cholesterol transport, and glucose and fatty acid metabolism. The antiproliferative role of LXRs has been studied in a variety of malignancies and may represent a therapeutic opportunity in cancers lacking targeted therapies, such as triple-negative breast cancer. In this study, we investigated the impact of ...
    • Intraregional hospital outbreak of OXA-244-producing Escherichia coli ST38 in Norway, 2020 

      Lindemann, Paul Christoffer; Pedersen, Torunn Annie; Oma, Dorthea Hagen; Janice, Jessin; Grøvan, Fredrik; Chedid, Ghantous Milad; Hafne, Liv Jorunn; Josefsen, Ellen Haldis; Kacelnik, Oliver; Sundsfjord, Arnfinn; Samuelsen, Ørjan (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-06)
      Infections with OXA-244-carbapenemase-producing Escherichia coli with sequence type (ST)38 have recently increased in Europe. Due to its low-level activity against carbapenems, OXA-244 can be difficult to detect. Previous assessments have not revealed a clear source and route of transmission for OXA-244-producing E. coli, but there are indications of non-healthcare related sources and community ...
    • Impact of a staggered scaffold structure on the mechanical properties and cell response in bone tissue engineering 

      He, Xiaoli; Zhao, Qian; Zhang, Ningning; Wang, Junbin; Si, Qingzong; Xue, Ying; Xing, Zhe (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-20)
      The primary goal of bone tissue engineering is to fabricate scaffolds that can provide a microenvironment similar to that of natural bone. Therefore, various scaffolds have been designed to replicate the bone structure. Although most tissues exhibit complicated structures, their basic structural unit includes stiff platelets arranged in a staggered microarray. Therefore, many researchers have ...
    • Pro-arrhythmic effect of escitalopram and citalopram at serum concentrations commonly observed in older patients – a study based on a cohort of 19,742 patients 

      Faraj, Pari; Størset, Elisabet; Hole, Kristine; Smith, Godfrey L; Molden, Espen; Dietrichs, Erik Sveberg (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-26)
      Background - For a decade, patients have been advised against using high citalopram- and escitalopram-doses due to risk for ventricular arrhythmia and cardiac arrest. Still, these drugs are widely used to treat depression and anxiety especially in older patients. It is unclear why they are cardiotoxic and at what serum concentrations patients are at risk for arrhythmias. Thus, how many patients that ...
    • Candida auris 

      Sollid, Johanna U Ericson (Chapter; Bokkapittel, 2019)
      Candida auris (C. auris) er en gjærsopp som kan forårsake alvorlige infeksjoner hos mennesker. Infeksjoner med Candida auris forekommer i hovedsak i helseinstitusjoner og rammer som regel alvorlig syke pasienter. I tillegg er behandling vanskelig fordi soppen ofte er resistent/motstandsdyktig mot de vanligste medikamentene som brukes ved Candida-infeksjon.
    • Vibrio vulnificus 

      Sollid, Johanna U Ericson (Chapter; Bokkapittel, 2019)
      <i>Vibrio vulnificus</i> er en bakterie som trives i saltvann over 20 grader og som kan gi sykdom hos personer med sår eller nedsatt immunforsvar (såkalt opportunistisk infeksjon). Alvorlige sykdom forekommer oftest nær Taiwan, Sør-Korea, Japan og i Mexicogolfen. I senere år er det rapportert flere tilfeller med alvorlige infeksjon med <i>Vibrio vulnificus</i> hos personer som har badet i nordiske ...
    • Reply to Henriksen, S.; Rinaldo, C.H. Should SVGp12 Be Used for JC Polyomavirus Studies? Comment on “Prezioso et al. COS-7 and SVGp12 Cellular Models to Study JCPyV Replication and MicroRNA Expression after Infection with Archetypal and Rearranged-NCCR Viral Strains. Viruses 2022, 14, 2070” 

      Prezioso, Carla; Moens, Ugo; Pietropaolo, Valeria (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-29)
      In relation to the comment by Henriksen and Rinaldo, the authors intend to emphasize that before every experiment with SVGp12 cells they routinely test the cells for the absence of BKPyV contamination. The scientists can state that the SVGp12 cells used in their laboratory were not infected by BKPyV and that their results were also validated on the COS-7 cell line, which is permissive for JCPyV ...
    • Functional analyses of rare germline BRCA1 variants by transcriptional activation and homologous recombination repair assays 

      Bassi, Nicola; Hovland, Henrikke Nilsen; Rasheed, Kashif; Ghelue, Marijke van (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-21)
      Background - Damaging alterations in the BRCA1 gene have been extensively described as one of the main causes of hereditary breast and ovarian cancer (HBOC). BRCA1 alterations can lead to impaired homologous recombination repair (HRR) of double-stranded DNA breaks, a process which involves the RING, BRCT and coiled-coil domains of the BRCA1 protein. In addition, the BRCA1 protein is involved in ...
    • AlphaFold-multimer predicts ATG8 protein binding motifs crucial for autophagy research 

      Olsvik, Hallvard Lauritz; Johansen, Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-08)
      Proteins are structural and executing macromolecules essential for life in all biological systems. Insight into proteins structures is required for detailed mechanistic understanding of how they work and solve different tasks. The ability to predict three-dimensional (3D) protein structures from primary sequence information has therefore been an open research question for more than 50 years. The ...
    • Cohort profile: The Clinical and Multi-omic (CAMO) cohort, part of the Norwegian Women and Cancer (NOWAC) study 

      Delgado, André Berli; Tylden, Eline Sol Garthsdatter; Lukic, Marko; Moi, Line Haugan; Rasmussen Busund, Lill-Tove; Lund, Eiliv; Olsen, Karina Standahl (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-06)
      Introduction - Breast cancer is the most common cancer worldwide and the leading cause of cancer related deaths among women. The high incidence and mortality of breast cancer calls for improved prevention, diagnostics, and treatment, including identification of new prognostic and predictive biomarkers for use in precision medicine.<p> <p>Material and methods - With the aim of compiling a cohort ...
    • Detection of human neurotropic JCPyV DNA sequence in pediatric anaplastic xanthoastrocytoma 

      Passerini, Sara; Prezioso, Carla; Prota, Annalisa; Babini, Giulia; Bargiacchi, Lavinia; Bartolini, Daniela; Moens, Ugo; Antonelli, Manila; Pietropaolo, Valeria (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-25)
      Due to its peculiar histopathological findings, pleomorphic xanthoastrocytoma (PXA), a rare cerebral tumor of young adults with a slow growth and a good prognosis, resembles to the lytic phase of progressive multifocal leukoencephalopathy, a fatal neurodegenerative disease caused by JC polyomavirus (JCPyV). Therefore, the presence of JCPyV DNA was examined in an 11-year-old child with xanthoastrocytoma, ...
    • Intra-cellular to inter-organ mitochondrial communication in striated muscle in health and disease 

      Boardman, Neoma Tove; Wüst, Rob C.I. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-02)
      Mitochondria sense both biochemical and energetic input in addition to communicating signals regarding the energetic state of the cell. Increasingly, these signaling organelles are recognized as key for regulating different cell functions. This review summarizes recent advances in mitochondrial communication in striated muscle, with specific focus on the processes by which mitochondria communicate ...
    • Regulation of Transcriptional Activity of Merkel Cell Polyomavirus Large T-Antigen by PKA-Mediated Phosphorylation 

      Falquet, Mar; Prezioso, Carla; Ludvigsen, Maria A.; Bruun, Jack-Ansgar; Passerini, Sara; Sveinbjørnsson, Baldur; Pietropaolo, Valeria; Moens, Ugo (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-03)
      Merkel cell polyomavirus (MCPyV) is the major cause of Merkel cell carcinoma (MCC), an aggressive skin cancer. MCPyV large T-antigen (LTag) and small T-antigen (sTag) are the main oncoproteins involved in MCPyV-induced MCC. A hallmark of MCPyV-positive MCC cells is the expression of a C-terminal truncated LTag. Protein kinase A (PKA) plays a fundamental role in a variety of biological processes, ...
    • High-throughput screen in vitro identifies dasatinib as a candidate for combinatorial treatment with HER2-targeting drugs in breast cancer 

      Normann, Lisa Svartdal; Haugen, Mads; Hongisto, Vesa; Aure, Miriam Ragle; Leivonen, Suvi-Katri; Kristensen, Vessela N.; Tahiri, Andliena; Engebråten, Olav; Sahlberg, Guro Kristine Kleivi; Mælandsmo, Gunhild Mari (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-27)
      Human epidermal growth factor receptor 2-positive (HER2+) breast cancer is an aggressive subtype of this disease. Targeted treatment has improved outcome, but there is still a need for new therapeutic strategies as some patients respond poorly to treatment. Our aim was to identify compounds that substantially affect viability in HER2+ breast cancer cells in response to combinatorial treatment. We ...
    • Endogenous IL-1 receptor antagonist restricts healthy and malignant myeloproliferation 

      Villatoro, Alicia; Cuminetti, Vincent; Bernal, Aurora; Torroja, Carlos; Cossío, Itziar; Benguría, Alberto; Ferré, Marc; Konieczny, Joanna; Vázquez, Enrique; Rubio, Andrea; Utnes, Peter Andree; You, Xiaona; Fenton, Christopher Graham; Paulssen, Ruth H; Zhang, Jing; Sánchez-Cabo, Fatima; Dopazo, Ana; Vik, Anders; Anderssen, Endre; Hidalgo, Andres; Arranz, Lorena (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-03)
      Here we explored the role of interleukin-1β (IL-1β) repressor cytokine, IL-1 receptor antagonist (IL-1rn), in both healthy and abnormal hematopoiesis. Low IL-1RN is frequent in acute myeloid leukemia (AML) patients and represents a prognostic marker of reduced survival. Treatments with IL-1RN and the IL-1β monoclonal antibody canakinumab reduce the expansion of leukemic cells, including CD34+ ...
    • Machine learning-based immune phenotypes correlate with STK11/KEAP1 co-mutations and prognosis in resectable NSCLC: a sub-study of the TNM-I trial 

      Rakaee, Mehrdad; Andersen, S.; Giannikou, K.; Paulsen, Erna-Elise; Kilvær, Thomas Karsten; Rasmussen Busund, Lill-Tove; Berg, Thomas; Richardsen, Elin; Lombardi, Ana Paola; Adib, E.; Pedersen, Mona Irene; Tafavvoghi, Masoud; Wahl, Sissel Gyrid Freim; Petersen, R.H.; Bondgaard, A.L.; Yde, C.W.; Baudet, C.; Licht, P.; Lund-Iversen, Marius; Grønberg, Bjørn Henning; Fjellbirkeland, Lars; Helland, Åslaug; Pøhl, M.; Kwiatkowski, D.J.; Dønnem, Tom (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-24)
      Background - We aim to implement an immune cell score model in routine clinical practice for resected non-small-cell lung cancer (NSCLC) patients (NCT03299478). Molecular and genomic features associated with immune phenotypes in NSCLC have not been explored in detail.<p> <p>Patients and methods - We developed a machine learning (ML)-based model to classify tumors into one of three categories: ...
    • 17β-estradiol promotes extracellular vesicle release and selective miRNA loading in ERα-positive breast cancer 

      Drula, Rares; Pardini, Barbara; Fu, Xiao; De Los Santos, Mireia Cruz; Jurj, Ancuta; Pang, Lan; El-Daly, Sherien M.; Fabris, Linda; Knutsen, Erik; Dragomir, Mihnea P.; Bayraktar, Recep; Li, Yongfeng; Chen, Meng; Del Vecchio, Filippo; Berland, Léa; Dae, Jessica; Fan, Daniel; Shimizu, Masayoshi; Tran, Anh M.; Barzi, Mercedes; Pioppini, Carlotta; Gutierrez, Angelica M.; Ivan, Cristina; Meas, Salyna; Hall, Carolyn S.; Alahari, Suresh K.; Berindan-Neagoe, Ioana; Fabbri, Muller; Lucci, Anthony; Arun, Banu; Anfossi, Simone; Calin, George A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-30)
      The causes and consequences of abnormal biogenesis of extracellular vesicles (EVs) are not yet well understood in malignancies, including in breast cancers (BCs). Given the hormonal signaling dependence of estrogen receptor–positive (ER+) BC, we hypothesized that 17β-estradiol (estrogen) might influence EV production and microRNA (miRNA) loading. We report that physiological doses of 17β-estradiol ...
    • Association between Variants in the OCA2-HERC2 Region and Blue Eye Colour in HERC2 rs12913832 AA and AG Individuals 

      Salvo, Nina Mjølsnes; Andersen, Jeppe Dyrberg; Janssen, Kirstin; Meyer, Olivia Luxford; Berg, Thomas; Børsting, Claus; Olsen, Gunn-Hege (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-11)
      The OCA2-HERC2 region is strongly associated with human pigmentation, especially eye colour. The HERC2 SNP rs12913832 is currently the best-known predictor for blue and brown eye colour. However, in a previous study we found that 43 of 166 Norwegians with the brown eye colour genotype rs12913832:AA or AG, did not have the expected brown eye colour. In this study, we carried out massively parallel ...
    • Development of early life gut resistome and mobilome across gestational ages and microbiota-modifying treatments 

      Bargheet, Ahmed; Klingenberg, Claus Andreas; Esaiassen, Eirin; Hjerde, Erik; Cavanagh, Jorunn Pauline; Bengtsson-Palme, Johan; Pettersen, Veronika K. (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-13)
      Background - Gestational age (GA) and associated level of gastrointestinal tract maturation are major factors driving the initial gut microbiota composition in preterm infants. Besides, compared to term infants, premature infants often receive antibiotics to treat infections and probiotics to restore optimal gut microbiota. How GA, antibiotics, and probiotics modulate the microbiota’s core ...