Institutt for medisinsk biologi: Nye registreringer
Viser treff 581-600 av 1200
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A gender specific improved survival related to stromal miR-143 and miR-145 expression in non-small cell lung cancer
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-04)Micro RNAs (miRNA) are small non-coding RNAs that post-transcriptionally regulate gene expression. Dysregulation of miRNA cluster 143/145 has been reported in several malignancies, but their role in non-small cell lung cancer (NSCLC) remains elusive. This study investigates the prognostic impact of miR-143 and miR-145 in primary tumors and metastatic lymph nodes in NSCLC tissue. Tissue from 553 ... -
IL-1β Promotes a New Function of DNase I as a Transcription Factor for the Fas Receptor Gene
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-06)Recently we described that endonuclease inactive DNase I translocated into the nucleus in response to increased endogenous IL-1β expression. Here, we demonstrate impact and function of translocated DNase I in tubular cells. Effect of cytokines on expression level and nuclear localisation of DNase I and corresponding levels of Fas receptor (FasR) and IL-1β were determined by confocal microscopy, qPCR ... -
Lupus nephritis: low urinary DNase I levels reflect loss of renal DNase I and may be utilized as a biomarker of disease progression
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-02-21)Renal DNase I is lost in advanced stages of lupus nephritis. Here, we determined if loss of renal DNase I reflects a concurrent loss of urinary DNase I, and whether absence of urinary DNase I predicts disease progression. Mouse and human DNase I protein and DNase I endonuclease activity levels were determined by western blot, gel, and radial activity assays at different stages of the murine and human ... -
Mesenchymal stem cells and T cells in the formation of Tertiary Lymphoid Structures in Lupus Nephritis
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-05-18)Tertiary lymphoid structures (TLS) develop in the kidneys of lupus-prone mice and systemic lupus erythematosus (SLE) patients with lupus nephritis (LN). Here we investigated the presence of mesenchymal stem cells (MSCs) in the development of TLS in murine LN, as well as the role of human MSCs as lymphoid tissue organizer (LTo) cells on the activation of CD4+ T cells from three groups of donors ... -
ICAM1 expression is induced by proinflammatory cytokines and associated with TLS formation in aggressive breast cancer subtypes
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-06)Intratumoral formation of tertiary lymphoid structures (TLS) within the tumor microenvironment is considered to be a consequence of antigen challenge during anti-tumor responses. Intracellular adhesion molecule 1 (ICAM1) has been implicated in a variety of immune and inflammatory responses, in addition to associate with triple negative breast cancer (TNBC). In this study, we detected TLS in the ... -
Mitochondrial genome variation of Atlantic cod
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-19)Objective:<br> The objective of this study was to analyse intraspecifc sequence variation of Atlantic cod mitochondrial DNA, based on a comprehensive collection of completely sequenced mitochondrial genomes. <br>Results:<br> We determined the complete mitochondrial DNA sequence of 124 cod specimens from the eastern and western part of the species’ distribution range in the North Atlantic Ocean. ... -
Primary rat LSECs preserve their characteristic phenotype after cryopreservation
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-02)Liver disease is a leading cause of morbidity and mortality worldwide. Recently, the liver non-parenchymal cells have gained increasing attention for their potential role in the development of liver disease. Liver sinusoidal endothelial cells (LSECs), a specialized type of endothelial cells that have unique morphology and function, play a fundamental role in maintaining liver homeostasis. Current ... -
Faecal colonization of E. coli and Klebsiella spp. producing extended-spectrum beta-lactamases and plasmid-mediated AmpC in Mozambican university students
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-01-08)<p><i>Background</i>: In recent years, the world has seen a surge in Enterobacteriaceae resistant to broad-spectrum beta-lactam antibiotics due to the production of extended-spectrum beta-lactamases (ESBLs) or plasmid-mediated AmpC (pAmpC) enzymes. Data on the epidemiology of cephalosporin-resistant Enterobacteriaceae in Sub-Saharan Africa are still limited.</p> <p><i>Methods</i>: Two hundred ... -
Whole-Organism Transcriptomic Analysis Provides Mechanistic Insight into the Acute Toxicity of Emamectin Benzoate in Daphnia magna
(Journal article; Tidsskriftartikkel; Peer reviewed, 2016-10-05)Emamectin benzoate (EMB) is an antisea lice chemical widely used in the aquaculture that may also unintentionally affect nontarget crustaceans in the environment. Although the adverse effects of this compound are well documented in various species, the full modes of action (MoAs) are still not well characterized. The current study was therefore conducted to characterize the MoAs of EMB and link ... -
The catalytic reaction mechanism of drosophilid alcohol dehydrogenases
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014-12-24)The present review describes the current knowledge about the reaction mechanism of drosophilid alcohol dehydrogenases (DADH), a member of the short chain dehydrogenase/reductase (SDR) superfamily. Included is the binding order of the substrates to the enzyme, rate limiting steps, stereochemistry of the reaction, active site topology, role of important amino acids and water molecules in the reaction ... -
Release of chitobiase as an indicator of potential molting disruption in juvenile Daphnia magna exposed to the ecdysone receptor agonist 20-hydroxyecdysone
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-29)During arthropod molting, the old exoskeleton is degraded and recycled by the molting fluid. Chitobiase, a major chitinolytic enzyme in the molting fluid, has been widely used as a biomarker to indicate endocrine disruption of molting in arthropods under environmental stress. Although release of chitobiase was extensively studied in organisms exposed to molting-inhibiting chemicals, enzymic association ... -
The selectivity of galardin and an azasugar-based hydroxamate compound for human Matrix metalloproteases and bacterial metalloproteases
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-08-03)Inhibitors targeting bacterial enzymes should not interfere with enzymes of the host, and knowledge about structural determinants for selectivity is important for designing inhibitors with a therapeutic potential. We have determined the binding strengths of two hydroxamate compounds, galardin and compound 1b for the bacterial zinc metalloproteases, thermolysin, pseudolysin and auerolysin, known to ... -
Integrative metabolic and transcriptomic profiling of prostate cancer tissue containing reactive stroma
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-09-24)Reactive stroma is a tissue feature commonly observed in the tumor microenvironment of prostate cancer and has previously been associated with more aggressive tumors. The aim of this study was to detect differentially expressed genes and metabolites according to reactive stroma content measured on the exact same prostate cancer tissue sample. Reactive stroma was evaluated using histopathology from ... -
Nephronectin is Correlated with Poor Prognosis in Breast Cancer and Promotes Metastasis via its Integrin-Binding Motifs
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-03-11)Most cancer patients with solid tumors who succumb to their illness die of metastatic disease. While early detection and improved treatment have led to reduced mortality, even for those with metastatic cancer, some patients still respond poorly to treatment. Understanding the mechanisms of metastasis is important to improve prognostication, to stratify patients for treatment, and to identify new ... -
Characterization and pro-inflammatory responses of spore and hyphae samples from various mold species
(Journal article; Tidsskriftartikkel; Manuskript; Peer reviewed; Preprint, 2017-09-18)Mold particles from <i>Aspergillus fumigatus, Penicillium chrysogenum, Aspergillus versicolor</i>, and <i>Stachybotrys chartarum</i> have been linked to respiratory‐related diseases. We characterized X‐ray‐inactivated spores and hyphae fragments from these species by number of particles, morphology, and mycotoxin, β‐glucan and protease content/activity. The pro‐inflammatory properties of mold particles ... -
Metabolic re-wiring of isogenic breast epithelial cell lines following epithelial to mesenchymal transition
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-03-18)Epithelial to mesenchymal transition (EMT) has implications in tumor progression and metastasis. Metabolic alterations have been described in cancer development but studies focused on the metabolic re-wiring that takes place during EMT are still limited. We performed metabolomics profiling of a breast epithelial cell line and its EMT derived mesenchymal phenotype to create genome-scale metabolic ... -
Inflammation of mammary adipose tissue occurs in overweight and obese patients exhibiting early-stage breast cancer
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-03)Growing evidence indicates that adiposity is associated with breast cancer risk and negatively affects breast cancer recurrence and survival, a paracrine role of mammary adipose tissue being very likely in this process. In contrast to other adipose depots, occurrence of a sub-inflammatory state of mammary adipose tissue defined by dying adipocytes surrounded by macrophages forming crown-like structures ... -
Inhibition of PDE5A1 guanosine cyclic monophosphate (cGMP) hydrolysing activity by sildenafil analogues that inhibit cellular cGMP efflux
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-02-17)<p><i>Objectives</i>: To determine the ability of 11 sildenafil analogues to discriminate between cyclic nucleotide phosphodiesterases (cnPDEs) and to characterise their inhibitory potencies (<kursiv>K</kursiv><sub>i</sub> values) of PDE5A1‐dependent guanosine cyclic monophosphate (cGMP) hydrolysis.</p> <p><i>Methods</i>: Sildenafil analogues were identified by virtual ligand screening (VLS) ... -
Optical investigation of osteoarthritic human cartilage (ICRS grade) by confocal Raman spectroscopy: a pilot study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015)Biomolecular changes in the cartilage matrix during the early stage of osteoarthritis may be detected by Raman spectroscopy. The objective of this investigation was to determine vibrational spectral differences among different grades (grades I, II, and III) of osteoarthritis in human osteoarthritic cartilage, which was classified according to the International Cartilage Repair Society (ICRS) grading ... -
Interleukin-1β as emerging therapeutic target in hematological malignancies and potentially in their complications
(Journal article; Tidsskriftartikkel; Peer reviewed, 2017-05-03)Interleukin-1β (IL-1β) is a pleiotropic cytokine that exerts multiple roles in both physiological and pathological conditions. It is produced by different cell subsets, and drives a wide range of inflammatory responses in numerous target cells. Enhanced IL-1β signaling is a common event in patients of hematological malignancies. Recent body of evidence obtained in preclinical models shows the ...