Blar i tittel Artikler, rapporter og annet (medisinsk biologi)

Viser treff 795-814 av 1054

    • Promoter activity of Merkel cell Polyomavirus variants in human dermal fibroblasts and a Merkel cell carcinoma cell line. 

      Abdulsalam, Ibrahim Afolabi; Rasheed, Kashif; Sveinbjørnsson, Baldur; Ehlers, Bernhard; Moens, Ugo (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-04-19)
      <p><i>Background - </i>Merkel cell polyomavirus (MCPyV) is a human polyomavirus that establishes a life-long harmless infection in most individuals, with dermal fibroblasts believed to be the natural host cell. However, this virus is the major cause of Merkel cell carcinoma (MCC), an aggressive skin cancer. Several MCPyV variants with polymorphism in their promoter region have been isolated, but it ...

    • Proposal of selective inhibitor for bacterial zinc metalloprotease: Molecular mechanics and ab initio molecular orbital calculations 

      Imai, Kyohei; Saito, Rysouke; Ezawa, Takyua; Sugiyama, Satoshi; Sylte, Ingebrigt; Kurita, Noriyuki (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-11)
      The zinc metalloprotease pseudolysin (PLN) secreted from Pseudomonas aeruginosa degrades extracellular proteins to produce bacterial nutrition, and various types of PLN inhibitors have been developed to suppress the bacterial growth. However, as the structure of the ligand-binding pocket of PLN has large similarities to those of human matrix metalloproteinases (MMPs) and other human zinc metalloprotease, ...

    • The proposed Drug Resistance Index (DRI) is not a good measure of antibiotic effectiveness in relation to drug resistance 

      Vandenbroucke-Grauls, Christina MJE; Kahlmeter, Gunnar; Kluytmans, Jan; Kluytmans-Van Den Bergh, Marjolein; Monnet, Dominique L; Simonsen, Gunnar Skov; Skov, Robert L; Wolff Sonksen, Ute; Voss, Andreas (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-21)
      Summary box<p> <ul> <li>The Drug Resistance Index (DRI) is proposed as measure of antibiotic effectiveness in a given country, by combining, in a single metric the use of various antibiotic groups and the resistance proportions of several pathogens.</li> <li>The DRI is a complicated measure that gives results that cannot be understood by common knowledge and logic.</li> <li>The DRI conveys ...

    • A prospective study of maternal anti-HPA1a antibody level as a potential predictor for alloimmune thrombocytopenia in the newborn 

      Husebekk, Anne; Killie, Mette Kjær; Kjeldsen-Kragh, Jens; Skogen, Bjørn Ragnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2008)

    • Proteases in plasma and kidney of db /db mice as markers of diabetes-induced nephropathy 

      Hadler-Olsen, Elin Synnøve; Winberg, Jan-Olof; Reinholt, Finn P.; Larsen, Terje; Uhlin-Hansen, Lars; Jenssen, Trond Geir; Berg, Eli; Kolset, Svein Olav (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Db/db mice are overweight, dyslipidemic and develop diabetic complications, relevant for similar complications in human type 2 diabetes. We have used db/db and db/+ control mice to investigate alterations in proteinase expression and activity in circulation and kidneys by SDS-PAGE zymography, electron microscopy, immunohistochemistry, Western blotting, and in situ zymography. Plasma from db/db mice ...

    • Protein kinase C isozymes associated with relapse free survival in non-small cell lung cancer patients 

      Halvorsen, Ann Rita; Haugen, Mads Haugland; Øjlert, Åsa Kristina; Lund-Iversen, Marius; Jørgensen, Lars Hilmar; Solberg, Steinar; Mælandsmo, Gunhild Mari; Brustugun, Odd Terje; Helland, Åslaug (Journal article; Tidsskriftartikkel, 2020-11-25)
      <i>Introduction</i>: Protein expression is deregulated in cancer, and the proteomic changes observed in lung cancer may be a consequence of mutations in essential genes. The purpose of this study was to identify protein expression associated with prognosis in lung cancers stratified by smoking status, molecular subtypes, and EGFR-, TP53-, and KRAS-mutations.<p> <p><i>Methods</i>: We performed ...

    • Protein signature predicts response to neoadjuvant treatment with chemotherapy and bevacizumab in HER2-negative breast cancers 

      Haugen, Mads Haugland; Lingjærde, Ole Christian; Hedenfalk, Ingrid; Garred, Øystein; Borgen, Elin; Loman, Niklas; Hatschek, Thomas; Børresen-Dale, Anne-Lise; Naume, Bjørn; Mills, Gordon B.; Mælandsmo, Gunhild Mari; Engebråten, Olav (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-01-28)
      <p>PURPOSE: Antiangiogenic therapy using bevacizumab has proven effective for a number of cancers; however, in breast cancer (BC), there is an unmet need to identify patients who benefit from such treatment. <p>PATIENTS AND METHODS: In the NeoAva phase II clinical trial, patients (N = 132) with large (≥ 25 mm) human epidermal growth factor receptor 2 (HER2)-negative primary tumors were randomly ...

    • The proteoglycan repertoire of lymphoid cells 

      Fadnes, Bodil Irene; Husebekk, Anne; Svineng, Gunbjørg; Rekdal, Øystein; Yanagishita, Masaki; Kolset, Svein Olav; Uhlin-Hansen, Lars (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Proteoglycans have been studied to a limited extent in lymphoid cells. In this study we have investigated the expression of proteoglycans in B-cells, CD4+ T-cells, CD8+ T-cells, natural killer cells, as well as in nine different cell lines established from patients with lymphoid malignancies. Serglycin was the major proteoglycan expressed at mRNA level by the primary lymphocytes. None of the syndecans ...

    • Proteoglycans Determine the Dynamic Landscape of EMT and Cancer Cell Stemness 

      Karagiorgou, Zoi; Fountas, Panagiotis N; Manou, Dimitra; Knutsen, Erik; Theocharis, Achilleas D. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-10-29)
      Proteoglycans (PGs) are pivotal components of extracellular matrices, involved in a variety of processes such as migration, invasion, morphogenesis, differentiation, drug resistance, and epithelial-to-mesenchymal transition (EMT). Cellular plasticity is a crucial intermediate phenotypic state acquired by cancer cells, which can modulate EMT and the generation of cancer stem cells (CSCs). PGs ...

    • Proteomic analyses identify major vault protein as a prognostic biomarker for fatal prostate cancer 

      Ramberg, Håkon Andre; Richardsen, Elin; De Souza, Gustavo Antonio; Rakaee, Mehrdad; Stensland, Maria; Braadland, Peder Rustøen; Nygård, Ståle; Ögren, Olov; Guldvik, Ingrid; Berge, Viktor; Svindland, Aud; Tasken, Kristin Austlid; Andersen, Sigve (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-20)
      The demographic shift toward an older population will increase the number of prostate cancer cases. A challenge in the treatment of prostate cancer is to avoid undertreatment of patients at high risk of progression following curative treatment. These men can benefit from early salvage treatment. An explorative cohort consisting of tissue from 16 patients who underwent radical prostatectomy, and were ...

    • Protocol for Isolation and Culture of Mouse Hepatocytes (HCs), Kupffer Cells (KCs), and Liver Sinusoidal Endothelial Cells (LSECs) in Analyses of Hepatic Drug Distribution 

      Elvevold, Kjetil; Kyrrestad, Ingelin; Smedsrød, Bård (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-02-25)
      Development of the new generation of drugs (e.g., oligo- and polynucleotides administered intravascularly either as free compounds or as nano-formulations) frequently encounters major challenges such as lack of control of targeting and/or delivery. Uncontrolled or unwanted clearance by the liver is a well-known and particularly important hurdle in this respect. Hence, reliable techniques are needed ...

    • Protocol for preparation of mouse liver Kupffer cells and liver sinusoidal endothelial cells 

      Smedsrød, Bård (Others; Andre, 2012)
      The following protocol is an outline of the method we use to prepare Kupffer cells (KC) and liver sinusoidal endothelial cells (LSEC) from mouse liver. The method is based on the one originally published to prepare rat liver KC and LSEC (1), and is slightly modified from the one outlined in (2). We also strongly recommend reading our 2012 review paper (3) to obtain a solid background understanding ...

    • 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 ...

    • Pulmonary vascular clearance of harmful endogenous macromolecules in a porcine model of acute liver failure 

      Nedredal, Geir Ivar; Elvevold, Kjetil Helge; Chedid, MF; Ytrebø, Lars Marius; Rose, CF; Sen, S; Smedsrød, Bård; Jalan, R; Revhaug, Arthur (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-30)
      Background. Pulmonary complications are common in acute liver failure (ALF). The role of the lungs in the uptake of harmful soluble endogenous macromolecules was evaluated in a porcine model of ALF induced by hepatic devascularization (n = 8) vs. controls (n = 8). In additional experiments, pulmonary uptake was investigated in healthy pigs. Fluorochrome-labeled modified albumin (MA) was applied to ...

    • Purified sardine and king crab trypsin display individual differences in PAR-2-, NF-kB-, and IL-8 signaling 

      Larsen, Anett Kristin; Seternes, ole morten; Bang, Berit (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-08-31)
      Respiratory symptoms occur in workers processing a great variety of seafood. Studies previously showed that salmon trypsin increases transcriptional activity of NF-κB and induces secretion of IL-8 from airway epithelial cells by activating PAR-2. The aim of this study was to explore if purified trypsins from king crab (Paralithodes camtschaticus) and sardine (Sardinops melanostictus) are able to ...

    • Quality registry for improving the quality and relevance of higher education in Pakistan 

      Sheikh, Mashhood Ahmed (Journal article; Tidsskriftartikkel, 2011)

    • Quantitative analysis methods for studying fenestrations in liver sinusoidal endothelial cells. A comparative study 

      Szafranska, Karolina; Holte, Christopher Florian; Kruse, Larissa Dorothea; Mao, Hong; Øie, Cristina Ionica; Symonski, Marek; Zapotoczny, Bartlomiej; McCourt, Peter Anthony (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-28)
      Liver Sinusoidal Endothelial Cells (LSEC) line the hepatic vasculature providing blood filtration via transmembrane nanopores called fenestrations. These structures are 50−300 nm in diameter, which is below the resolution limit of a conventional light microscopy. To date, there is no standardized method of fenestration image analysis. With this study, we provide and compare three different approaches: ...

    • Quantitative analysis methods for studying fenestrations in liver sinusoidal endothelial cells. A comparative study 

      Szafranska, K.; Holte, Christopher Florian; Kruse, L.D.; Mao, Hong; Øie, Cristina Ionica; Szymonski, M.; Zapotoczny, B.; McCourt, P.A.G. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-07-28)
      Liver Sinusoidal Endothelial Cells (LSEC) line the hepatic vasculature providing blood filtration via transmembrane nanopores called fenestrations. These structures are 50−300 nm in diameter, which is below the resolution limit of a conventional light microscopy. To date, there is no standardized method of fenestration image analysis. With this study, we provide and compare three different approaches: ...

    • Quantum Dot Nanomedicine Formulations Dramatically Improve Pharmacological Properties and Alter Uptake Pathways of Metformin and Nicotinamide Mononucleotide in Aging Mice 

      Hunt, Nick; Lockwood, Glen P; Kang, Sun Woo; Westwood, Lara; Limantoro, Christina; Chrzanowski, Wojciech; McCourt, Peter Anthony; Kuncic, Zdenka; Le Couteur, David G; Cogger, V.C. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-24)
      Orally administered Ag<sub>2</sub>S quantum dots (QDs) rapidly cross the small intestine and are taken up by the liver. Metformin and nicotinamide mononucleotide (NMN) target metabolic and aging processes within the liver. This study examined the pharmacology and toxicology of QD-based nanomedicines as carriers of metformin and NMN in young and old mice, determining if their therapeutic potency and ...

    • Quiescence and gamma H2AX in neuroblastoma are regulated by ouabain/Na,K-ATPase 

      Hiyoshi, H; Abdelhady, S; Segerström, L; Sveinbjørnsson, Baldur; Nuriya, M; Lundgren, T; Desfrere, L; Miyakawa, A; Yasui, M.; Kogner, P; Johnsen, JI; Andang, M; Uhlén, P (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)
      Cellular quiescence is a state of reversible proliferation arrest that is induced by anti-mitogenic signals. The endogenous cardiac glycoside ouabain is a specific ligand of the ubiquitous sodium pump, Na,K-ATPase, also known to regulate cell growth through unknown signalling pathways. To investigate the role of ouabain/Na,K-ATPase in uncontrolled neuroblastoma growth we used xenografts, flow ...