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In memoriam : Lennart Jeppsson - banbrytande paleontolog
Swedenborgiana 2008
The global distribution and evolution of deoxyribonucleoside kinases in bacteria
Deoxyribonucleoside kinases (dNKs) are important to DNA metabolism, especially in environments where nucleosides are freely available to be absorbed and used for the salvage pathway. Little has previously been known about the complement of dNKs in different bacterial genomes. However, it was believed that Gram-negative bacteria had a single dNK, while Gram-positive bacteria possessed several. An a
Modeling chronic myeloid leukemia in immunodeficient mice reveals expansion of aberrant mast cells and accumulation of pre-B cells.
Chronic myeloid leukemia (CML) is a myeloproliferative neoplasm that, if not treated, will progress into blast crisis (BC) of either myeloid or B lymphoid phenotype. The BCR-ABL1 fusion gene, encoding a constitutively active tyrosine kinase, is thought to be sufficient to cause chronic phase (CP) CML, whereas additional genetic lesions are needed for progression into CML BC. To generate a humanize
Sargad segerherre på film: Churchill-berättelser på 2000-talet
In depth study of the representation of Winston Churchill in the HBO-films The Gathering Storm (2002) and Into the Storm (2009). Here, Churchill is depicted along the lines of the success of democratic liberalism post 1989.
Multireference Ab Initio Calculations of g tensors for Trinuclear Copper Clusters in Multicopper Oxidases.
EPR spectroscopy has proven to be an indispensable tool in elucidating the structure of metal sites in proteins. In recent years, experimental EPR data have been complemented by theoretical calculations, which have become a standard tool of many quantum chemical packages. However, there have only been a few attempts to calculate EPR g tensors for exchange-coupled systems with more than two spins.
Incidence and survival in non-hereditary amyloidosis in Sweden
Background: Amyloidosis is a heterogeneous disease caused by deposition of amyloid fibrils in organs and thereby interfering with physiological functions. Hardly any incidence data are available and most survival data are limited to specialist clinics. Methods: Amyloidosis patients were identified from the Swedish Hospital Discharge and Outpatients Registers from years 2001 through 2008. Results:
Characterization of Meteorin-An Evolutionary Conserved Neurotrophic Factor
Growth factors control cellular growth, proliferation, and differentiation and may have therapeutic applications. In this study, we focus on Meteorin which is a member of a largely uncharacterized evolutionary conserved two-member growth factor family. Our analysis shows that Meteorin is expressed in the central nervous system both during development and in adult mice. Detailed immunohistological
A Measure of Septum Shape Using Shortest Path Segmentation in Echocardiographic Images of LVAD Patients
Patients waiting for heart transplantation due to a failing heart can get a left ventricular assist device (LVAD) implanted through open chest surgery. The device consists of a pump that pumps blood from the left ventricle into the aorta. To get the correct rotation speed of the pump, the physicians consider a number of measurements as well as a sequence of echocardiographic images. The important
Climate-dependent dispersal rates in metapopulations of burnet moths
Predicted climate change implies warmer weather and a higher frequency of extreme weather situations. The consequences of the warm July in 2003 was investigated in contrast to the cold July in 2004 in southern Sweden with focus on the dispersal rate of two species of burnet moths (Zygaenidae). During an extensive mark-release-recapture program in metapopulations of burnet moths substantial differe
Temporal filtering with fast ICCD cameras in Raman studies
A common problem when applying Raman scattering in applied research is spectral interference from laser-induced fluorescence. Extensive work has been invested in developing spectral and polarization filters as well as modulation schemes to refine spontaneous Raman signals. This current work, however, focuses on utilizing the temporal domain using a picosecond laser system and ICCD cameras with rel
Risk factors for Clostridium difficile toxin-positive diarrhea: a population-based prospective case-control study
Increased incidence and severity of Clostridium difficile infections (CDIs) is of major concern. However, by minimizing known risk factors, the incidence can be decreased. The aim of this investigation was to calculate the incidence and assess risk factors for CDI in our population. A 1-year prospective population-based nationwide study in Iceland of CDIs was carried out. For risk factor evaluatio
Non-equivalent stringency of ethical review in the Baltic States: a sign of a systematic problem in Europe?
We analyse the system of ethical review of human research in the Baltic States by introducing the principle of equivalent stringency of ethical review, that is, research projects imposing equal risks and inconveniences on research participants should be subjected to equally stringent review procedures. We examine several examples of non-equivalence or asymmetry in the system of ethical review of h
The Monarch's Gift: critical notes on the Bhutanese constitutional process
In 2001 the Bhutanese State took an important step in its process of state formation, as the country embarked on a journey that would turn it into a constitutional monarchy in 2008. This process is typically described by academics and the international media as one in which the King gave the constitution as a ‘gift’ to the people. However, there are some puzzling issues connected to this represent
recension
A QM/MM study of the binding of RAPTA ligands to cathepsin B
We have carried out quantum mechanical (QM) and QM/MM (combined QM and molecular mechanics) calculations, as well as molecular dynamics (MD) simulations to study the binding of a series of six RAPTA (Ru(II)-arene-1,3,5-triaza-7-phosphatricyclo-[3.3.1.1] decane) complexes with different arene substituents to cathepsin B. The recently developed QM/MM-PBSA approach (QM/MM combined with Poisson-Boltzm
The Role of the Cortico-Basal Ganglia-System in Voluntary Movements
Popular Abstract in Swedish Nervsystemet är sannolikt en av de mest vidunderliga strukturer som skapats i detta universum - denna avhandling hade till exempel varken kunnat skrivas eller läsas utan det. Som av en slump handlar den också om just nervsystemet och läsande och skrivande är två exempel på olika funktioner som möjliggjorts på grund av det. Även om dessa utgör funktioner som är ovanliga Bodies with multiple limbs and joints have endless possibilities to move around in their surrounding space. How the nervous system controls this amount of degrees of freedom in motor execution is a question under vigorous debate. In an ambition to explore related aspects of motor control we conducted parallel electrophysiological recordings of motor circuits in the cortex and basal ganglia in the
Inhibition of cerebrovascular raf activation attenuates cerebral blood flow and prevents upregulation of contractile receptors after subarachnoid hemorrhage
Background: Late cerebral ischemia carries high morbidity and mortality after subarachnoid hemorrhage (SAH) due to reduced cerebral blood flow (CBF) and the subsequent cerebral ischemia which is associated with upregulation of contractile receptors in the vascular smooth muscle cells (SMC) via activation of mitogen-activated protein kinase (MAPK) of the extracellular signal-regulated kinase (ERK)1
A Frostman-Type Lemma for Sets with Large Intersections, and an Application to Diophantine Approximation
We consider classes G(s)([0, 1]) of subsets of [0, 1], originally introduced by Falconer, that are closed under countable intersections, and such that every set in the class has Hausdorff dimension at least s. We provide a Frostman-type lemma to determine if a limsup set is in such a class. Suppose that E = lim supE(n) subset of [0, 1], and that mu(n) are probability measures with support in E-n.