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Actual and perceived safety on board Swedish ships.
Modern Genes : Body, Rationality and Ambivalence
The main objective of this ethnological thesis is to investigate the linkage between everyday life with a genetic disease and intrinsic patterns of modernity. The thesis is a compilation thesis that contains four individual articles each addressing the everyday experience of a genetic disease from different angles, with different research questions and theoretical presumptions. Each of the four ar
The Singleton Fraction of Stars Formed in Stellar Clusters
Most stars form in some sort of stellar cluster or association. In such clusters the number density of stars can be very high. Thus, single stars in such clusters may undergo frequent close encounters with other stars and exchange encounters with binary systems. The perturbation caused by the other star in a close encounter or by the companion star in a binary can have significant effects on the e
The role of PKC in neuronal differentiation and in regulation of the actin cytoskeleton during neurite outgrowth
Popular Abstract in Swedish Proteinkinas C (PKC) är en familj enzymer (protein som påskyndar cellulära förlopp) bestående av åtminstone 10 medlemmar (isoformer) vilka är involverade i ett flertal cellulära processer. Varje isoform är namngiven med en grekisk bokstav och beroende på olika egenskaper hos enzymerna kan PKC familjen delas in i tre undergrupper, de klassiska (α, βΙ, βΙΙ och γ), de nya Protein kinase C (PKC) is a family of serine/threonine kinases subgrouped into classical (α, βI, βII, γ), novel (δ, ε, η, θ) and atypical (ζ, ι/λ) isoforms. PKC can be activated by phorbol esters, and prolonged treatment of neuroblastoma cells has been shown to induce neuronal differentiation with neurite outgrowth and increased expression of neuronal genes. Here we show that a classical PKCβ isof
The Role of Reactive Oxygen Species in Animal Models of Autoimmunity
Reactive oxygen species (ROS) produced by the phagocyte NADPH oxidase complex are important in the killing of invading pathogens. Lately, a role of ROS has been suggested in regulation of the immune system. This was further highlighted when the Ncf1 gene, encoding a subunit of the NADPH oxidase complex, was found to regulate arthritis severity in rats. Interestingly, the fact that increased arthri
Needle biopsies on autopsy prostates: sensitivity of cancer detection based on true prevalence
BACKGROUND: It is difficult to estimate the diagnostic accuracy of biopsy for prostate cancer because men with negative biopsy do not undergo radical prostatectomy and thus have no confirmation of biopsy findings. METHODS: We performed 18-core needle biopsies on autopsy prostates from 164 men who had no history of prostate cancer. Six-core biopsies were taken from each of the mid peripheral zone (
A Metalloproteinase Karilysin Present in the Majority of Tannerella forsythia Isolates Inhibits All Pathways of the Complement System.
Tannerella forsythia is a poorly studied pathogen despite being one of the main causes of periodontitis, which is an inflammatory disease of the supporting structures of the teeth. We found that despite being recognized by all complement pathways, T. forsythia is resistant to killing by human complement, which is present at up to 70% of serum concentration in gingival crevicular fluid. Incubation
Small intestinal CD103(+) dendritic cells display unique functional properties that are conserved between mice and humans
A functionally distinct subset of CD103(+) dendritic cells (DCs) has recently been identified in murine mesenteric lymph nodes (MLN) that induces enhanced FoxP3(+) T cell differentiation, retinoic acid receptor signaling, and gut-homing receptor (CCR9 and alpha 4 beta 7) expression in responding T cells. We show that this function is specific to small intestinal lamina propria (SI-LP) and MLN CD10
Constitutive expression of stromal derived factor-1 by mucosal epithelia and its role in HIV transmission and propagation
HIV particles that use the chemokine receptor CXCR4 as a coreceptor for entry into cells (X4-HIV) inefficiently transmit infection across mucosal surfaces [1], despite their presence in seminal fluid and mucosal secretions from infected individuals [2] [3] [4]. In addition, although intestinal lymphocytes are susceptible to infection with either X4-HIV particles or particles that use the chemokine
Disruption of TFB1M impairs insulin secretion in beta cells
Dual effects of low and high concentrations of cAMP on glucagon secretion from mouse pancreatic A-cells
Separation of decay-accelerating and cofactor functional activities of Kaposi's sarcoma-associated herpesvirus complement control protein using monoclonal antibodies
Complement is an essential part of the innate immune system, which clears pathogens without requirement for previous exposure, although it also greatly enhances the efficacy and response of the cellular and humoral immune systems. Kaposi's sarcoma-associated herpesvirus (KSHV) is the most recently identified human herpesvirus and the likely aetiological agent of Kaposi's sarcoma, primary effusion
New approaches to pharmacological treatment of osteoporosis.
Osteoporosis has been recognized as a major public health problem for less than two decades. The increasing incidence of fragility fractures, such as vertebral, hip, and wrist fractures, first became apparent from epidemiological studies in the early and mid-1980s, when effective treatment was virtually unavailable. Pharmacological therapies that effectively reduce the number of fractures by impro
Spinal sensorimotor transformation: Relation between cutaneous somatotopy and a reflex network
The projection of primary afferents onto spinal interneurons constitutes the first step in sensorimotor transformations performed by spinal reflex systems. Despite extensive studies on spinal somatotopy, uncertainties remain concerning the extent and significance of representational overlap and relation to spinal reflex circuits. To address these issues, the cutaneous projection from the hindpaw a
Infection with cagA- and vacA-positive and -negative strains of Helicobacter pylori in a mouse model
To study the role of cytotoxin-associated protein (cagA) and vacuolating cytotoxin (vacA) in Helicobacter pylori infection in an experimental murine model, mice were infected with seven strains with different cagA and vacA status. Groups of 10 NMRI mice were challenged and were killed 5 weeks later. In a second study, 20 mice were challenged with a mixture of the same seven strains and killed 1, 3
Unaltered Size-selectivity of the Glomerular Filtration Barrier in Caveolin-1 Knock-out (KO) mice.
The transfer of albumin from blood to tissue has been found to be increased in caveolin-1 knock-out (KO) mice. This has been considered to reflect an increased microvascular permeability, conceivably caused by an increased endothelial production of nitric oxide (NO) in mice lacking caveolin-1. To investigate whether such an increase in endothelial NO-production would also affect the glomerular bar
Activation of TAFI on the Surface of Streptococcus pyogenes Evokes Inflammatory Reactions by Modulating the Kallikrein/Kinin System
Bacteria-controlled regulation of host responses to infection is an important virulence mechanism that has been demonstrated to contribute to disease progression. Here we report that the human pathogen Streptococcus pyogenes employs the procarboxypeptidase TAR (thrombin-activatablefibrinolysis inhibitor) to modulate the kallikrein/kinin system. To this end, bacteria initiate a chain of events star
Perception of virtual multisensory mobile objects
We explore here, through three complementary experiments on virtual objects, how intimate active relations with multisensory audio-visual and haptics perceptions allow to the cognitive creation of new believable and plausible objects that can be different of the virtual ones objectively implemented. The three experiments are based on "Pebble Boxes" and consist in the exploration and the manipulati
Unraveling the magnetic carriers of igneous cores from the Atlantic, Pacific, and the southern Indian oceans with rock magnetic characterization
Previous rock magnetic investigations of oceanic basement samples have been mainly restricted by single drill holes of dredge collections. In this study, we present new and published data on the rock magnetic properties of igneous rock samples recovered during seven Ocean Drilling Program (ODP) legs in the Atlantic, Pacific, and the southern Indian oceans. The recovered igneous rocks from these le
