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We report the development of a high-level bacterial expression system for the Alzheimer's disease-associated amyloid beta-peptide (A beta), together with a scaleable and inexpensive purification procedure. A beta(1-40) and A beta(1-42) coding sequences together with added ATG codons were cloned directly into a Pet vector to facilitate production of Met-A beta(1-40) and Met-A beta(1-42), referred t
Impact work-rate of a weakly damped beam with elastic two-sided amplitude constraints subject to harmonic excitation is calculated. Impact work-rate is the rate of energy dissipation to the impacting surfaces. The beam is clamped at one end and constrained by unilateral contact sites near the other end. This system was an object of a vibro-impact experiment which was analyzed in our earlier paper
Popular Abstract in Swedish SVENSK POPULÄRVETENSKAPLIG SAMMANFATTNING (SUMMARY IN SWEDISH) Vi kommer dagligen i kontakt med kemiska ämnen av olika slag. Med till exempel mat och dryck, läkemedel, tobaksrökning och miljögifter får vi i oss ämnen som kan vara skadliga för oss. Vi är dock utrustade med ett ordentligt reningsverk, framför allt är det levern som ser till att farliga ämnen bryts ner ochCytochrome P450 (CYP) is involved in the metabolism of the majority of clinically used drugs. We have studied the CYP mediated metabolism of quinoline 3-carboxamides, a group of synthetic immunomodulators in liver microsomal preparations from various species. Roquinimex, the lead compound, was found to be metabolised by CYPs to hydroxylated and demethylated metabolites. A similar metabolite patter
CONTEXT: Plasma fibrinogen levels may be associated with the risk of coronary heart disease (CHD) and stroke. OBJECTIVE: To assess the relationships of fibrinogen levels with risk of major vascular and with risk of nonvascular outcomes based on individual participant data. DATA SOURCES: Relevant studies were identified by computer-assisted searches, hand searches of reference lists, and personal c
Popular Abstract in Swedish Denna avhandling består av ett introduktionskapitel, följt av tre kapitel i vilka individens betalningsvilja för att reducera väg- och personbildödsrisken skattas, baserat både på observerade och hypotetiska val. I kapitel 2 används den hedoniska regressionstekniken på den svenska personbilsmarknaden för att skatta värdet av trafiksäkerhet. Resultaten från studien visaThe thesis consists of an introductory chapter, followed by three chapters in which willingness to pay (WTP) for a reduction in car- and road-mortality risk is estimated using both revealed- and stated-preference methods. In chapter 2 the hedonic regression technique is used to estimate the value of traffic safety, using information from the Swedish market for automobiles. The results from the st
The majority of microarray studies focus on analysis of gene expression differences between various specimens or conditions. However, the causes of this variability from one cancer to another, from one sample to another and from one gene to another often remain unknown. In this study, we present a systematic procedure for finding genes whose expression levels are altered due to an intrinsic or ext
1. We experimentally tested if a multiplicative risk model accurately predicted the consumption of a common mayfly at risk of predation from three predator species in New Zealand streams. Deviations between model predictions and experimental observations were interpreted as indicators of ecologically important interactions between predators. 2. The predators included a drift-feeding fish [brown t
The aim of the present study was to develop a method for generation of dimethylbenzylamine (DMBA) atmospheres in an exposure chamber and to investigate the possibility of using urinary DMBA metabolites for biological monitoring of exposure to DMBA. A DMBA atmosphere was generated by use of the gas-permeation principle. Six healthy male volunteers were exposed for 8 h to DMBA at air levels of 20, 4
Recent magnetic-resonance work on Y-Z suggests that this species exhibits considerable motional flexibility in its functional site and that its phenol oxygen is not involved in a well-ordered hydrogen-bond interaction (Tang et al., submitted; Tommos et al., in press). Both of these observations are inconsistent with a simple electron-transfer function for this radical in photosynthetic water oxida
A search for scalar and vector leptoquarks coupling to first generation fermions is performed using the e(+) p and e(-) p scattering data collected by the H1 experiment between 1994 and 2000. The data correspond to a total integrated luminosity of 117 pb(-1). No evidence for the direct or indirect production of such particles is found in data samples with a large transverse momentum final state el
Helicobacter pylori exists in two different morphological forms, spiral and coccoid. This study demonstrated that both forms can infect BALB/c A mice. The animals were inoculated orally three times at 2-day intervals with 10(8) cfu of both spiral and coccoid forms of strain CCUG 17874 (NCTC 11637), strain 25 and strain 553/93. Infection was followed over a 30-week period by histological scoring of
The valence band resonant photoemission spectra of a TiO2 sub-monolayer grown on an Al2O3 substrate have been measured throughout the Ti 3p absorption edge, i.e. at photon energies between 40 and 60 eV. The resonance process has been analysed in terms of constant initial state (CIS) curves, showing a peak at 49.5 eV photon energy, corresponding to a Fano-like resonant process. The Ti 3d contributi
Three healthy young male subjects were given a single load of ethanol (approximately 3 g/kg body weight) over 5 hours. Liver aspiration biopsies were performed at the start of the experiment and 6, 14, 24, and 48 hours after the start. Blood alcohol and serum transaminase activity levels were measured simultaneously. Triglycerides and phospholipids of the liver biopsy material were determined by a
OBJECTIVE: To present validity data for the Work Experience Measurement Scale (WEMS), an instrument measuring multifaceted work experience from a salutogenic health resource perspective as a contrast to the more common pathogenic risk perspective, by exploring WEMS relationship to established measurements that are positively related to health and work. A salutogenic perspective focuses on finding
Although deep brain electrical stimulation can alleviate the motor symptoms of Parkinson disease (PD), just a small fraction of patients with PD can take advantage of this procedure due to its invasive nature. A significantly less invasive method-epidural spinal cord stimulation (SCS)-has been suggested as an alternative approach for symptomatic treatment of PD. However, the mechanisms underlying
This thesis deals with the interplay between education, labor markets and health. It consists of five studies exploiting large-scale administrative datasets from Sweden. The first study asks if health and educational attainment are related within monozygotic twin (MZ) pairs. This is motivated by the literature using MZ twins to estimate the returns to schooling. If a healthier twin tends to get
Objective. To investigate the inter- and intra-observer reliability of both qualitative and quantitative parameters used in the assessment of nail-fold capillaroscopy images.Methods. Fifty mosaic nail-fold images of healthy controls (n = 10), patients with primary RP (n = 10) and SSc (n = 30) were assessed in random order by two blinded observers on two occasions at centres in Sweden, UK and The N
