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Intrinsic and extrinsic factors controlling the differentiation of human midbrain progenitor cells

Popular Abstract in Swedish Parkinsons sjukdom (PS) karaktäriseras av långsam celldöd i hjärnan och gradvis uppträder minskad rörlighet och muskelstelhet som mest framträdande symptom. PS drabbar ungefär 0.1% av befolkningen, och inträder oftast i femtio- till sextioårsåldern. Varför sjukdomen uppkommer är till stor del okänt, men man vet att de dopamin producerande cellerna i mitthjärnan (särskilParkinson's disease (PD) is a common neurodegenerative disorder characterized by motor deficits. Levodopa treatment provides marked symptomatic relief. However, within 5-10 years after the start of Levodopa treatment, most PD patients display a gradual loss of drug efficacy. Importantly, the neuropathology of PD is dominated by a marked loss of dopaminergic neurons located in the substantia nigra.

Acute rotational trauma to the knee: poor agreement between clinical assessment and magnetic resonance imaging findings.

To determine the incidence of anterior cruciate ligament (ACL) injuries in the general population; the pathology associated with a knee sprain verified by magnetic resonance imaging (MRI); and the agreement between clinical findings and MRI.Materials and methods: Inclusion criterion was an acute rotational trauma to the knee associated with effusion. One hundred and fifty-nine consecutive patients

Maximally Aligned States in the Proton Drip Line Nucleus 106Sb

High-spin states in Sb-106 have been investigated in the Fe-54(Ni-58, 1α 1p1n) reaction by in-beam γ-spectroscopic methods using the EUROBALL detector array equipped with charged particle and neutron detectors. On the basis of measured γγ-coincidence relations, angular distributions, and linear polarization ratios a significantly extended level scheme has been constructed up to spin and parity I-π

Muscarinic receptor density in the rat urinary bladder after denervation, hypertrophy and urinary diversion

Parasympathetic denervation of the urinary bladder results in supersensitivity to muscarinic agonists and in bladder hypertrophy. In the present study, the effects of denervation on the muscarinic receptors in the rat bladder were investigated, using a receptor binding technique with (-)3H-QNB as radioligand. The density of muscarinic receptors was increased in denervated, hypertrophied bladders b

Hormone-sensitive lipase, the rate-limiting enzyme in triglyceride hydrolysis, is expressed and active in beta-cells

Triglycerides in the beta-cell may be important for stimulus-secretion coupling, through provision of a lipid-derived signal, and for pathogenetic events in NIDDM, where lipids may adversely affect beta-cell function. In adipose tissues, hormone-sensitive lipase (HSL) is rate-limiting in triglyceride hydrolysis. Here, we investigated whether this enzyme is also expressed and active in beta-cells.

Bone mass changes in weight-loaded and unloaded skeletal regions following a fracture of the hip

Higher bone mineral density (BMD) has been reported in weight-loaded skeletal regions and lower BMD in unloaded regions in active athletes compared with controls. These discrepancies remain the first decades after cessation of active careers in former athletes with no remaining discrepancies found after age 65 years compared with age- and gender-matched controls. Physical activity is reduced after

A Detailed Modeling Study for Primary Reference Fuels and Fuel Mixtures and Their Use in Engineering Applications

The aim of this work is to generate detailed and simplified kinetic models for the oxidation of the Primary Reference Fuels (PRF) n-heptane, iso-octane and their mixtures, with low numbers of species and reactions. These mechanisms are consistent in terms of the choice of kinetic parameters for the different reaction classes. The further aim is to validate the kinetic models for a wide range of di

Measurement of prostate-specific antigen and human glandular kallikrein 2 in different body fluids

It has been demonstrated that prostate-specific antigen (PSA), in spite of its name, can be detected in body fluids and tumors from a variety of organs. Investigations have shown that human glandular kallikrein 2 (hK2), a related prostate-secreted protease, can activate the zymogen form of PSA, suggesting that the two enzymes might work as a functional unit, with hK2 as the activator molecule and

Uncertainty in Quantitative Risk Analysis - Characterisation and Methods of Treatment

The fundamental problems related to uncertainty in quantitative risk analyses, used in decision making in safety-related issues (for instance, in land use planning and licensing procedures for hazardous establishments and activities) are presented and discussed, together with the different types of uncertainty that are introduced in the various stages of an analysis. A survey of methods for the pr

Time-triggered garbage collection - Robust and adaptive real-time GC scheduling for embedded systems

The advent of Java and similar languages on the real-time system scene necessitates the development of efficient strategies for scheduling the work of a garbage collector in a non-intrusive way. We propose a scheduling strategy, time-triggered garbage collection, based on assigning the collector a deadline for when it must complete its current cycle. We show that a time-triggered CC with fixed dea

Functional foods: A health simulacrum

The paper addresses the issue of so-called functional foods, i.e. a specific type of health foods. The basic idea is that the claims made in the framing of these products have the character of modem myths. The myth structure discursively obscures the ideologically loaded scientific/medical premises on which the claims are resting. Rather than being healthy in an absolute sense, these products are

Nonlinear Transient Phenomena in Porous Media with Special Regard to Concrete and Durability

Concrete deteriorates due to many different mechanisms. Among the most important mechanisms is the reinforcement corrosion induced by deleterious substances reaching the embedded reinforcement bars. The external sources of deleterious materials may, for example, be deicing salts, sea water, and carbon dioxide. Research has sought to determine threshold values, in terms of concentration of deleteri

A collocation formulation of multistep methods for variable step-size extensions

Multistep methods are classically constructed by specially designed difference operators on an equidistant time grid. To make them practically useful, they have to be implemented by varying the step-size according to some error-control algorithm. It is well known how to extend Adams and BDF formulas to a variable step-size formulation. In this paper we present a collocation approach to construct v

Interactions and conformations of alpha-helical human apolipoprotein CI on hydrophilic and on hydrophobic substrates

Interactions between amphiphilic alpha-helical human apolipoprotein CI (APO CI) adsorbed on hydrophilic and on hydrophobic surfaces were studied using an interferometric surface force apparatus in an effort to understand the surface conformation and the binding activity of this protein. We used mica as the hydrophilic substrate and polymerized octadecyltriethoxysilane (OTE)-covered mica as the hyd