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Clotting systems are required in almost all animals to prevent loss of body fluids after injury. Here, we show that despite the risks associated with its systemic activation, clotting is a hitherto little appreciated branch of the immune system. We compared clotting of human blood and insect hemolymph to study the best-conserved component of clotting systems, namely the Drosophila enzyme transglut
The cause of the worldwide increase in type 1 diabetes (T1D) is largely unknown. T cells are thought to play a role in disease progression. In contemporary research over the last decade, age- and gender-specific serum levels as well as changes of Th1 and Th2-related cytokines are not well described. From a population-based register of children diagnosed from 1997 to 2005 this study explores eight
More than 235 million patients undergo surgery every year worldwide, but less than 1% are enrolled in surgical clinical trials-few of which are international collaborations. Several levels of action are needed to improve this situation. International research collaborations in surgery between developed and developing countries could encourage capacity building and quality improvement, and mutually
Staphylococcus aureus is an opportunistic pathogen that presents severe health care concerns due to the prevalence of multiple antibiotic-resistant strains. New treatment strategies are urgently needed, which requires an understanding of disease causation mechanisms. Complement is one of the first lines of defense against bacterial pathogens, and S. aureus expresses several specific complement inh
In this work we show how hydrodynamic forces can be used to locally trap molecules in a supported lipid bilayer (SLB). The method uses the hydrodynamic drag forces arising from a flow through a conical pipette with a tip radius of 1-1.5 mu m, placed approximately 1 mu m above the investigated SLB. This results in a localized force-field that acts on molecules protruding from the SLB, yielding a hy
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
Popular Abstract in Swedish Intensifieringen av jordbruket under de senaste sextio åren har resulterat i en dramatisk produktionsökning av framförallt spannmål. Denna typ av produktion, speciellt det mest intensiva s.k. industrijordbruket, har samtidigt också resulterat i en ohållbar degradering av ekosystemen och miljön, till exempel förlust av biologisk mångfald, utsläpp av växthusgaser, förgiftSeveral studies have found that organic farms support higher biodiversity, but results vary between studies such that some also show no or even negative effects. There can be many reasons why studies comparing organic and conventional farming show conflicting results. The efficacy of organic farming can depend on focal taxa, landscape context, study scale and the proportion of organically managed
This research investigated how the employees of a company experienced a VR-model of an office building that was to be their future work place and how that VR-experience com¬pared with the employees’ experience of the completed building. About two years after the VR-showings the building was completed and the staff had moved into the building. The results for the employees who saw the VR-presentati
Elevated moisture contents due to exposed weather conditions and ageing façade materials can often lead to degradation and increased risks for the building walls, but also affect the insulating properties of the materials, as thermal and hygric behaviour of building materials are closely interconnected. This paper presents the first results from a study of a 1950-ies multi-family building with a p
When investigating different location and/or system designs the possible variables to take into consideration can differs between the alternatives. Different production system will have different optimal working conditions and hence should be compared with parameters suitable for the actual production system. When planning production and calculating production costs the batch size is of high inter
Abstract Digital visualization has gone through a revolutionary decade. Compared to other fields where these methods have been applied, archaeology has been, and still is, more resistant to integrating tools and instruments able to describe materials and scenarios with high resolution. This is partly due to the archaeological misconception of high cost of scientific equipment and the complexity in
Malaria is a major global cause of deaths and a vaccine is urgently needed.
During atrial fibrillation (AF), time-frequency analysis of atrial signal has been applied to describe fibrillatory frequency trends. Recently, temporal changes in spectral shape have been investigated using the spectral profile technique. This profile is computed recursively by fitting each short-time log-spectrum to a spectral template, using amplitude scaling and frequency shifting. The purpose
Objectives: To assess the risk of lymphoproliferative disease or other malignancy (standardised incidence ratios (SIRs)), in patients with primary Sjogren's syndrome according to the American-European Consensus Criteria (AECC), compared with patients with sicca syndrome (non-AECC) and the background population. To identify predictors of malignancy and describe lymphoma types and survival probabili
Popular Abstract in Swedish Åderförfettning (även kallat åderförkalkning eller ateroskleros) börjar genom att det ?onda kolesterolet? LDL fastnar i väggen på ett blodkärl. Där kan LDL börja modifieras och orsaka inflammation. Inflammationen påskyndas av att vita blodceller kommer in i artärväggen och försöker ta bort fettet. Om en stor mängd fett lagras in, kan det inte avlägsnas. Tillsammans med Atherosclerosis is a chronic inflammatory disease, characterized by the accumulation of lipids and fibrous tissue in the wall of medium and large-sized arteries. The characteristic culprit of the disease is the atheroma, or atherosclerotic plaque, a patchy thickening of the arterial wall which affects the lumen, inducing various degrees of stenosis. The rupture of the atherosclerotic plaques, foll
Medin amyloid is found in the medial layer of the aorta in almost 100% of the Caucasian population over 50 years of age. The medin fragment is 5.5 kDa and derives from the C2-like domain of the precursor protein lactadherin. We have previously reported immunohistochemical findings showing that medin amyloid co-localizes with elastic fibers of arteries and herein we show that lactadherin also is as
We present a new type of nanometer-scale semiconductor nonlinear device, called self-switching device (SSD). The device was realized by simply etching insulating grooves into a semiconductor, between which a narrow channel with a broken symmetry was formed. Because of the asymmetry in the channel boundary, an applied voltage V not only changes the potential profile along the channel direction, but
Chronic granulomatous disease (CGD) is an inherited disorder characterized by recurrent life-threatening bacterial and fungal infections. CGD results from defective production of reactive oxygen species by phagocytes caused by mutations in genes encoding the NADPH oxidase 2 (NOX2) complex subunits. Mice with a spontaneous mutation in Ncf1, which encodes the NCF1 (p47(Phox)) subunit of NOX2, have d
