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Now showing items 1-42 of 42
(Master thesis / Masteroppgave, 2005)
Det er vist at gallesubstanser er potente luktestimuli og induserer ulike typer adferdsmønstre hos fisk. Det er også flere egenskaper ved gallesaltene som gjør dem spesielt interessante i det akvatiske miljø som eksempel ...
(Master thesis / Hovedoppgave, 2005)
DNA polymeraser er av fundamental betydning for levende organismer, ettersom de spiller en avgjørende rolle i replikasjon og reparasjon av DNA. I de siste årene er de blitt viktige genteknologiske verktøy, og varmestabile ...
(Master thesis / Hovedoppgave, 2005)
Antimicrobial peptides produced by lactic acid bacteria (LAB) are extensively studied, but little is know about their three-dimensional structures. Solution structures of these peptides will be useful to gain information ...
(Master thesis / Masteroppgave, 2005)
The major histocompatibility (MHC) class II molecules present peptides to the T cell receptor on CD4+ lymphocytes. The diversity of the epitopes presented depends critically on the processing of the ingested antigens, and ...
(Master thesis / Masteroppgave, 2005)
Prostate cancer (PCa) and obesity are currently two of the most prevalent health problems in the western world. Some epidemiological studies suggest a connection between PCa and fat intake and obesity. In addition, androgens, ...
(Master thesis / Masteroppgave, 2005)
(Master thesis / Masteroppgave, 2005)
Histone lysine methylation is considered to be a relatively stable modification associated with important functions in epigenetic gene control and for organizing chromatin domains. Genes encoding mammalian homologues of ...
(Master thesis / Masteroppgave, 2005)
Covalent modifications of the DNA and histones through acetylation, phosphorylation, methylation, etc are central to gene regulation, recombination, DNA replication and many other processes in the cell. With respect to ...
(Master thesis / Masteroppgave, 2005)
The high densities of receptors found in synapses are crucial for effective transmission between a nerve and its target cell. At the neuromuscular junctions, acetylcholine is the transmitter substance and its receptor, the ...
(Master thesis / Masteroppgave, 2005)
Androgen ablation during the initial stages of prostate cancer causes regression of the tumor due to an increase in apoptosis and reduced cellular proliferation. However, some prostate cancer cells survive in the androgen ...
(Master thesis / Masteroppgave, 2005)
ABSTRACT
The aim of this thesis was to investigate the in vitro physiological and genetic responses of Bacillus cereus ATCC 14579 to bile, bile salts and mucin, substances which would be encountered in the gastrointestinal ...
(Master thesis / Masteroppgave, 2005)
Abstract
The intention of this study was to identify and characterize signal pathways of the mesenchymal stem cell line hMSC-TERT which are being influenced by different mediators of inflammation. The purpose was also to ...
(Master thesis / Hovedoppgave, 2005)
In isolated rat hepatocytes, okadaic acid and cantharidin activate AMP-activated protein kinase (AMPK) by a naringin-sensitive and a naringin-resistant mechanism respectively, probably through inhibition of protein ...
(Master thesis / Masteroppgave, 2005)
Abstract
Vascular endothelial cells contain typical, elongated vesicles called Weibel-Palade bodies (WPBs), which serve as a storage compartment for biologically active factors involved in hemostasis and inflammation. ...
(Master thesis / Masteroppgave, 2005)
Small peptides can act as signaling molecules that coordinate development, growth and differentiation. In interaction with a receptor the ligand can trigger downstream pathways which induce cellular responses or regulation ...
(Master thesis / Hovedoppgave, 2005)
Production of DNA damage is the basis of cancer treatments, such as radiotherapy. The limitation of the treatment dose tends to be how well the tumor and normal cell within the body can tolerate the therapy. In order to ...
(Master thesis / Masteroppgave, 2005)
The protein toxin ricin is found in the plant Ricinus communis, and is a useful tool in studies of intracellular traffic. It consists of an enzymatically active A chain and a B chain with lectin properties, joined together ...
(Master thesis / Hovedoppgave, 2005)
A reporter gene was constructed of the Chlamydomonas reinhardtii rbcL 5 f region from position -70 to +47, relative to the transcription start point (+1), followed by the E. coli uidA (GUS) gene and the Chlamydomonas psaB ...
(Master thesis / Masteroppgave, 2005)
Abstract
Nuclear receptors that work as heterodimers with RXR control several aspects of lipid metabolism. One such nuclear receptor, pregnane X receptor (PXR) is the molecular target for a wide variety of endogenous and ...
(Master thesis / Hovedoppgave, 2005)
Perfluoro oktansyre (PFOA) er en peroksisomal proliferator som er kjent for å også gi antiinflammatoriske reaksjoner. Virkningsmekanismen for stoffet i levende dyr er lite kjent. For å få en bedre forståelse av PFOAs ...
(Master thesis / Masteroppgave, 2005)
Bacillus cereus ATCC 14579 was grown under different conditions, in different growth media, and the following parameters were investigated; cell number, pH,oxygen levels, glucose levels, cell morphology, proportions of ...
(Master thesis / Hovedoppgave, 2005)
The female gametophyte of higher plants gives rise to the diploid embryo and the triploid endosperm which develop to produce the mature seed. Seed development is a concerted interplay of the embryo, endosperm and the ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
Background
Recent studies have demonstrated that the NKX3.1 protein is commonly down-regulated in testicular germ cell tumors (TGCTs) and prostate carcinomas. The homeobox gene NKX3.1 maps to chromosome ...
(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2005)
Background
Amplification of the q21-q23 region on chromosome 1 is frequently found in sarcomas and a variety of other solid tumours. Previous analyses of sarcomas have indicated the presence of at least ...
(Master thesis / Hovedoppgave, 2005)
Despite continuous improvement in gene delivery vector technology, development of methods for efficient and specific delivery of therapeutic genes to target cells still remains an important issue in the development of ...
(Master thesis / Masteroppgave, 2005)
Abstract
Skeletal muscle fibre types are determined by the activity of motor neurons, hormones, stretch and probably cell lineage. The electrical activity of the motor neurons might, through an unknown pathway, influence ...
(Master thesis / Hovedoppgave, 2005)
The eukaryotic supergroup chromalveolates, as defined in the chromalveolate hypothesis, comprise the chromists (haptophytes, heterokonts and cryptophytes) and the alveolates (dinoflagellates, ciliates and apicomplexa). The ...
(Master thesis / Masteroppgave, 2005)
Abstract
Increased pain response following injury is an important step in the process of protecting the injured site from further damage. However, pain can often be a more serious problem than the injury or disease process ...
(Master thesis / Hovedoppgave, 2005)
Vekstfaktorer og vekstfaktorreseptorer er med på å regulere vekst av celler via et nettverk av spesifikke intracellulære signalmekanismer. Binding av vekstfaktorer til reseptorer aktiverer reseptorene slik at signalkjeder ...
(Master thesis / Masteroppgave, 2005)
NUCKS-proteinet ble oppdaget i 1985 av Anne Carine Østvold og hennes medarbeidere ved Biokjemisk Institutt, Universitetet i Oslo. NUCKS genet er klonet og proteinet nøye karakterisert, men dets biologiske funksjon er ...
(Master thesis / Masteroppgave, 2005)
Bakgrunn: c-Myb er en sentral regulatorisk transkripsjonsfaktor i hematopoietiske celler og regulerer mange målgener som er involvert i proliferasjon, differensiering og apoptose. For å kunne forklare c-Mybs biologi er det ...
(Master thesis / Hovedoppgave, 2005)
DNA methylation plays an important role in regulating plant development and is associated with the silencing of gene expression. Earlier studies of mammalian and vertebrate cells have shown that there are several ...
(Master thesis / Masteroppgave, 2005)
When housed together, juvenile rainbow trout (Oncorhynchus mykiss) form social hierarchies in which subordinate animals show stress-related changes in behaviour, endocrine function and neurochemistry. Similar changes are ...
(Master thesis / Hovedoppgave, 2005)
Det humane genet WWOX har blitt identifisert av flere uavhengige forskningsgrupper i forbindelse med studier av strukturelle abnormaliteter av kromosom 16q i ulike krefttyper.
Dette genet er lokalisert innenfor kromosom ...
(Master thesis / Hovedoppgave, 2005)
Chaperoninene GroEL og GroES er en gruppe molekylære chaperoner som hittil er funnet i alle bakterier. Genene som koder for chaperoniner er vanligvis organisert i operoner på genomet. Den moderat termofile grønne glidende ...
(Master thesis / Hovedoppgave, 2005)
ABSTRACT rbcL is a constitutively expressed gene in the Chlamydomonas chloroplast. The 5 untranslated region (5 UTR) is predicted to form an RNA secondary structure that might function in RNA stabilization. Earlier studies ...
(Master thesis / Hovedoppgave, 2005)
In this study we have investigated by means of electron microscopy the uptake of the fragment crystallisable gamma receptor (FcãR) and its ligands (aggregated immunoglobulin G (AgIgG)) in J774 cells, a mouse macrophage ...
(Master thesis / Hovedoppgave, 2005)
De to formene av den polymorfe ciliaten Tetrahymena vorax er svært ulike med hensyn på morfologi, atferd og næringspreferanser. Den mikrostome formen lever av blant annet bakterier og råtnende biologisk materiale som taes ...
(Master thesis / Masteroppgave, 2005)
A subgroup of the universally conserved molecular chaperones, the chaperonins assist other proteins in folding or refolding in an ATP- dependent manner. First discovered in E. coli the best described member is the GroEL ...
(Master thesis / Masteroppgave, 2005)
Chromatin modulating proteins are thought to be involved in multimeric protein-protein interactions and contain characteristic amino-acid motifs like the SET domain. The SET domain proteins are believed to regulate gene ...
(Master thesis / Hovedoppgave, 2005)
Genet som koder for chaperoninet GroESL1 i C. aurantiacus ble isolert fra et genomisk bibliotek av bakterien. Genet som koder for GroESL2 var tidligere isolert fra det samme biblioteket (Vanberg, Hovedfagsoppgave UiO, 2001) ...
(Master thesis / Masteroppgave, 2005)
Når karuss, Carassius carassius L., eksponeres for substanser fra skadet skinn fra fisk av samme art, utløses en karakteristisk atferd kalt alarmreaksjon. Fisken svømmer mot bunnen og virvler opp mudder, som kan gi skjul ...