Population biology changes in native dimorphic whitefish <i>Coregonus lavaretus</i> were studied over a decade in the subarctic Pasvik watercourse, where large biotric changes occurred due to an invasion by vendace <i> C. albula</i>. Although initially recorded in the upstream part of the watercourse, where it is now the dominant pelagic species, the vendace subsequently also colonised the downstream ...

The aim of this study was to develop a novel predictive medium-throughput screening method for drug permeability, with use of a tight barrier of liposomes on a filter support. To our knowledge no one has succeeded in depositing membrane barriers without the use of inert solvent such as hexadecane. The first part of the study involved development of a protocol for preparation of these barriers, which ...

Bakgrunn: Antikoagulasjonsbehandling med warfarin er indisert ved ulike hjerte-/karsykdommer. Warfarin har smalt terapeutisk vindu, og doseringen er basert på jevnlige INR-målinger. Mangelfull terapistyring kan gi opphav til komplikasjoner, og årlig meldes det om 70-80 warfarinrelaterte alvorlige blødninger her i landet. Omtrent halvparten av disse er fatale. Pasienter som behandles med warfarin må ...

Background: The main cause to chronic myeloid leukemia (CML) is a translocation between chromosome 9 and 22, resulting in the Philadelphia chromosome, containing a BCR-ABL fusion-gene that encodes a constitutively active tyrosine kinase. Imatinib, a selective inhibitor of the tyrosine kinase, is the first-line treatment for CML-patients. However, drug-resistance is an increasing problem, and the ...

Gemcitabine, an anticancer agent, is currently in clinical use for the treatment of several types of cancer. Unfortunately, gemcitabine is rapidly metabolised with a short plasma half-life and its cytostatic action is strongly exposure-time dependent. In order to achieve the required concentration over sufficient periods of time, repeated application of relatively high doses is required. This, in ...

Bendamustin is an alkylating anticancer agent which is currently in routine use for the treatment of different types of cancer. The drug is very unstable in serum due to hydrolysis; the half life of the first part of the serum elimination curve is about 6-10 minutes. The rapid degradation of the drug in serum impairs its cytostatic action within a short period of time, and frequent application of ...

Enkelte kroniske inflammatoriske sjukdommar er kjent å disponere for utvikling av kreft. Ettersom fleire COX-2 hemmarar har synt kjemoterapeutisk effekt er det skapt stor interesse kring PGE2 si generelle rolle, og relevans i høve til kreft. PGE2 regulerer ei rekkje cellulære prosessar gjennom binding til fire prostaglandin E reseptorar (EP reseptorar). Matriks metalloproteinsar (MMPar) er ei gruppe ...

Makrofager kan utgjøre en betydelig del av en kreftsvulst. Det er tidligere vist at monocytter ved differensiering mot makrofager uttrykker økte mengder av enkelte cysteinproteaser. Maligne celler er vist å bruke cysteinproteaser i forbindelse med metastasering, og endogene cysteinproteasehemmere antas å kunne hemme denne prosessen. Det var derfor interessant å studere reguleringen i uttrykk og ...

Abstract Background Anxiety is one of the most common symptoms one can find in general practice. At least every tenth Norwegian person suffers of anxiety once in their lifetime. The appearances of sleeping disorders are also high, and it increases with increasing age. More than half of the people over the age of 65 suffer from chronic sleep disturbance. The elderly is a big group in society, ...