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Knockout of caspase-8, a cysteine protease that participates in the signaling for cell death by receptors of the TNF/nerve growth factor family, is lethal to mice in utero. To explore tissue-specific roles of this enzyme, we established its conditional knockout using the Cre/loxP recombination system. Consistent with its role in cell death induction, deletion of caspase-8 in hepatocytes protected
After infection with Borrelia burgdorferi, humans and mice under certain conditions develop arthritis. Initiation of inflammation is dependent on the migration of innate immune cells to the site of infection, controlled by interactions of a variety of adhesion molecules. In this study, we used the newly synthesized compound S18407, which is a prodrug of the active drug S16197, to analyze the funct
The base (BOP) and the top (TOP) of the world income pyramid represent the people living in poverty and the people from developed countries, respectively. In the approach of business development combined with poverty alleviation, the design of products for the BOP plays an important role. There is an urgent need to develop an understanding of the process of designing products for the BOP. Requirem
Popular Abstract in Swedish I cellen styrs allt av biomolekylernas förmåga till igenkänning och växelverkan med varandra. Molekylernas speciella egenskaper bygger upp kroppens alla komplicerade funktioner, till exempel immunförsvar, celldelning och muskelarbete. Interaktionerna mellan biomolekylerna kan vara av olika karaktär; de beskrivs som starka eller svaga (affinitet), långsamma eller snabba Molecular recognition and interaction is fundamental for the function of biological systems. The properties of the interacting biomolecules dictate the type of forces involved and the strength and dynamics of the interaction. Many interactions are very strong whereas others exhibit weak affinity. Typically, weak interactions work in concert to trigger a biological response. The advantage with thi
Popular Abstract in Swedish Vår läkemedelsanvändning har eskalerat de senaste två årtionden och vi har kunnat behandla, bota och förebygga sjukdomar samt minskat antalet oönskade graviditeter i större utsträckning jämfört med förr. Detta har dock också fört med sig negativa effekter och miljöproblem efter att läkemedlen kommer ut i naturen. Ett antal läkemedel är så kallade endokrina störningssubsSynthetic hormones are a group of pharmaceuticals used for various human and animal treatments. However, consumption and disposal of these substances have also given rise to negative effects and environmental problems for organisms in the wild which is why these substances have been classified as estrogenic endocrine-disrupting chemicals (EDCs). Studies on the estrogen receptors (ers) and their ge
Popular Abstract in Swedish För att skydda sig mot omgivande virus, bakterier och parasiter har kroppen utvecklat ett speciellt försvar. Detta försvar utgörs av ett komplext nätverk av celler och lösliga komponenter som interagerar med varandra. En del av kroppens försvar utgörs av fysiska barriärer så som huden och av celler som är specialiserade på att ta upp och döda angripande mikroorganismer.The interaction between murine bone marrow-derived dendritic cells (DC) and the Gram negative bacteria Salmonella typhimurium and Escherichia coli have been characterised. These studies showed that DC phagocytosed and processed S. typhimurium and E. coli expressing defined epitopes for peptide presentation on major histocompatibility complex class I (MHC-I) and class II (MHC-II) molecules. Process
Summary, key points: Transport considerations ought to be factored into the initial phase of the wheelchair & seating assessment process. Manufacturers of wheelchairs and seating systems should make information relating to the safe transportation of their products readily available - and easy to understand. With the desire to provide the safest possible transport environment for wheelchair-se
In this thesis aspects of peripheral B lymphocyte differentiation were studied. Through in vitro experiments, B lymphocyte activation was assessed. B lymphocytes express immunoglobulin (Ig) specific for a certain antigen on the cell surface, and when surface Ig is crosslinked by an antigen, the cell is activated. Antigens giving rise to a T cell dependent immune response are internalized by the B
Most methods that guide the designer through the later phases of the design process are general in nature, and it is up to the designer to organize the design work using the tools and techniques available. This process also relies greatly on experience, which is quite a challenge for students, who are mostly novices in the area. In a comparative study, the evolution of the experience and skills ac
Many studies focusing on the design activity use the interview technique as a part of their investigation. Methodological discussions about the interview setting as the locus of a social interaction between the interviewer and the respondent and its implications for the interpretation of the obtained data are nevertheless rarely found in publications within our design community. Part I of this pub
Adsorbed organic compounds modify the properties of environmental interfaces with potential implications for many Earth system processes. Here, we describe experimental studies of water interactions with acetic acid (AcOH) layers on ice and graphite surfaces at temperatures from 186 to 200 K. Hyperthermal D2O water molecules are efficiently trapped on all of the investigated surfaces, with only a
Education as a social right has been gaining strong prominence in the Nordic countries transition towards the post-industrial society. I focused the Swedish educational system. The study finds that the right to education turned into a moral duty to be an enlightened citizen. The interviewees’ stigmatize vocational programmes and encourage pupils to choose ‘right’ meaning school-based education. A
Two methods for estimating the sensor offset of a cylinder pressure transducer are developed. Both methods fit the pressure data during pre-combustion compression to a polytropic curve. The first method assumes a known polytropic exponent, and the other estimates the polytropic exponent. The first method results in a linear least-squares problem, and the second method results in a nonlinear least-
The heat transferred to the turbine blade is substantially increased as the turbine inlet temperature is increased. Cooling methods are therefore much needed for the turbine blades to ensure a long durability and safe operation. The blade tip region is exposed to the hot gas flows. A common way to cool the tip is to use serpentine passages with 180-deg turn under the blade tip cap taking advantage
