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A new and evolving paradigm for biocompatibility

We propose that the mechanical property of the interface between an implant and its surrounding tissues is critical for the host response and the performance of the device. The interfacial mechanics depends on several different factors related to the physical shape of the device and its surface as well as properties of the host tissue and the loading conditions of the device and surrounding tissue

A new cyclodextrin glycosyltransferase from an alkaliphilic Bacillus agaradhaerens isolate: purification and characterisation

A new, cyclodextrin glycosyltransferase (CGTase) from an alkaliphilic B. agaradhaerens strain LS-3C, isolated front an Ethiopian soda lake. was purified up to 43-fold by starch adsorption with a yield of 50%. The enzyme was a monomer with an estimated molecular weight of 110 kDa, representing the largest Bacillus CGTase reported so far. The isoelectric point (pI) of the enzyme was 6.9. The CGTase

Dissection of the genetic complexity of arthritis using animal models.

The exploding progress in genomic technology and knowledge now opens the possibility to actually identify the molecular mechanisms in disease. However, inflammatory diseases such as rheumatoid arthritis (RA) and multiple sclerosis (MS), are complex and polygenic and remain a challenge. One possible shortcut could be the use of inbred animals as models for RA and MS for the genetic analysis. These

Chiral dynamics in the meson sector at two loops

I give a very short introduction to chiral perturbation theory and an overview of the next-to-next-to-leading order three-flavour calculations done. I discuss those relevant for an improvement in the accuracy of the measurement of Vus in more detail. One major conclusion is that all needed p6 low energy constants can be obtained from experiment via the scalar form-factor in Kl3 decays

Interleukin-6 activates PI3K/Akt pathway and regulates cyclin A1 to promote prostate cancer cell survival

Interleukin-6 (IL6) is a growth and survival factor in human prostate cancer (PCa) cells with aggressive phenotypes and has been implicated in the progression of hormone refractory PCas. In the present study, we characterized the IL6-triggered PI3K/Akt and MAPK/Erk signaling. We identified the A-type cyclin, cyclin A1 as an important downstream target of PI3K/Akt. Treatment of cells with PI3K inhi

Comparison of the cost of preventing postoperative deep vein thrombosis with either unfractionated or low molecular weight heparin

The relative costs were analysed of (1) no prophylaxis against deep vein thrombosis (DVT), (2) selective treatment of DVT after confirmation of diagnosis, (3) general prophylaxis with standard low-dose unfractionated heparin and (4) general prophylaxis with low molecular weight heparin (LMWH) in patients undergoing elective general abdominal surgery or elective hip surgery. The mean calculated cos

The societal cost of alcohol consumption: an estimation of the economic and human cost including health effects in Sweden, 2002

This article estimates the societal cost of alcohol consumption in Sweden in 2002, as well as the effects on health and quality of life. The estimation includes direct costs, indirect costs and intangible costs. Relevant cost-of-illness methods are applied using the human capital method and prevalence-based estimates, as suggested in existing international guidelines, allowing cautious comparison

Finite elements solutions to magnetostriction. - II. Transient and non-linear modelling

This paper deals with transient finite elements modeling of magnetostriction. At first, a linear model is developed, which is verified by comparing the fourier transform of the step-response of the dynamical model to the, numerically differentiated, frequency response of the system. Then a non-linear relative permeability is assumed and at last, periodical collisions with a rigid wall are simulate

One-dimensional PtO2 at Pt steps: Formation and reaction with CO

Using core-level spectroscopy and density functional theory we show that a one-dimensional (1D) PtO2 oxide structure forms at the steps of the Pt(332) surface after O-2 exposure. The 1D oxide is found to be stable in an oxygen pressure range, where bulk oxides are only metastable, and is therefore argued to be a precursor to the Pt oxidation. As an example of the consequences of such a precursor e

The influence of extensive vegetated roofs on runoff water quality

The influence of extensive sedum-moss vegetated roofs on runoff water quality was studied for four full scale installations located in southern Sweden. The aim of the study was to ascertain whether the vegetated roof behaves as a sink or a source of pollutants and whether the age of a vegetated roof influences runoff quality. The runoff quality from vegetated roofs was also compared with the runof

Variability in muscle fibre areas in whole human quadriceps muscle: effects of increasing age

Cross-sections of whole vastus lateralis muscle from 20 men, 19 to 84 years of age, were prepared, and the cross-sectional area (microns2) of 375 type 1 and 375 Type 2 fibres was measured in five different regions throughout each muscle. In muscles from the old individuals, the mean CSA of Type 2 fibres was on average nearly 35% smaller (P less than 0.001) while the mean CSA of Type 1 fibres was o

High resolution mapping of an arthritis susceptibility locus on rat chromosome 4, and characterization of regulated phenotypes

The rat Natural Killer cell gene Complex (NKC) encodes molecules that can regulate immunity. It is located within an interval on DA rat chromosome 4 (RNO4) that is linked to immune-mediated inflammatory joint diseases, including oil-induced arthritis (OIA). We aimed to test the hypothesis that NKC regulates arthritis, by performing advanced mapping of arthritis and additional phenotypes induced by

Phosphorus effects on metabolic processes in monoxenic arbuscular mycorrhiza cultures

The influence of external phosphorus (P) on carbon (C) allocation and metabolism as well as processes related to P metabolism was studied in monoxenic arbuscular mycorrhiza cultures of carrot (Daucus carota). Fungal hyphae of Glomus intraradices proliferated from the solid minimal medium containing the colonized roots into C-free liquid minimal medium with different P treatments. The fungus formed

Cancer risk among patients hospitalized for Type 1 diabetes mellitus: a population-based cohort study in Sweden

P>Aims Type 1 diabetes mellitus (T1DM) is an autoimmune disease with potential mechanistic links to immune-related cancers. We aimed at examining the overall and specific cancer risks among hospitalized T1DM patients from the national registers in Sweden. Methods A T1DM research cohort was created by identifying T1DM patients from the Hospital Discharge Register and linking them with the Cancer Re

Sex differences in learning ability in a common songbird, the great tit-females are better observational learners than males

In mammals, including humans, the most consistent cognitive sex difference appears to be a male advantage in spatial ability. Usually, some sex-correlated selective advantage is inferred to explain this, for example, the need for males to navigate over large territories. In birds, sex differences in learning abilities are rare. Here, we show that females of a common European songbird, the great ti