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Gene-environment interactions in the aetiology of systemic lupus erythematosus

Systemic lupus erythematosus (SLE) is a disease that displays a multitude of symptoms and a vast array of autoantibodies. The disease course may vary substantially between patients. The current understanding of SLE aetiology includes environmental factors acting on a genetically prone individual during an undetermined time period resulting in autoimmunity and finally surpassing that individual's d

Neuropeptide Y and hypertension

Neuropeptide Y is a cotransmitter in the sympathetic nervous system with potent contractile effects on blood vessels. The plasma levels of neuropeptide Y-like immunoreactivity in patients with severe hypertension (> 120 mmHg) were increased compared with the levels in control subjects and were still elevated after long-term pharmacologic treatment of normotension. Neuropeptide Y stimulated DNA syn

Delta(9)-tetrahydrocannabinol and cannabinol activate capsaicin-sensitive sensory nerves via a CB1 and CB2 cannabinoid receptor-independent mechanism

Although Delta(9)-tetrahydrocannabinol (THC) produces analgesia, its effects on nociceptive primary afferents are unknown. These neurons participate not only in pain signaling but also in the local response to tissue injury. Here, we show that THC and cannabinol induce a CB1/CB2 cannabinoid receptor-independent release of calcitonin gene-related peptide from capsaicin-sensitive perivascular sensor

Light-induced linear dichroism in photoreversibly photochromic sensor pigments 1. Theory

With a photoreversibly photochromic regulator pigment such as phytochrome, linear action dichroism could theoretically be obtained after photoselection even if the molecules are initially randomly oriented. If randomly oriented Pr (red-absorbing phytochrome) (plant photoregulators) molecules are partially converted to Pfr (far-red absorbing phytochrome) molecules by plane-polarized red light, thos

Neurotransmitter release evoked by alpha-latrotoxin in the smooth muscle of the female pig urethra

Neuronal regulation of smooth muscle tone in the female pig urethra has mainly been studied in vitro using electrical field stimulation (EFS) of nerves. Excitatory control is considered to be exerted by released noradrenaline, whereas inhibitory control is non-adrenergic non-cholinergic (NANC), and mediated by nitric oxide (NO), and an as yet unidentified agent. We investigated the functional and

Deficient Fas expression by CD4+CCR5+T cells in multiple sclerosis

Objective: To evaluate whether T cells expressing CCR5 and CXCR3 from multiple sclerosis (MS) patients are more resistant to apoptosis. Methods: Expression of CD69, TNF-R1, Fas, FasL, bcl-2, and bax was investigated in 41 MS patients and 12 healthy controls by flow cytometry in CD4+ and CD8+ T cells expressing CCR5 and CXCR3. Results: In MS patients, the percentage of CD69 was increased and Fas ex

Scatter correction of transmission NIR spectra by photon migration data - Quantitative analysis of solids

The scope of this presentation is a new methodology to correct conventional NIR data for scattering effects. The technique aims at measuring the absorption coefficient of the samples rather than the total attenuation, measured by conventional NIR spectroscopy. The main advantage of this is that the absorption coefficient is independent of the path length of the light inside the sample, and therefo

A case of facial cellulitis and necrotizing lymphadenitis due to cowpox virus infection

We describe a patient with facial cellulitis/erysipelas due to cowpox virus inoculation in the respiratory epithelium of the nose. A cytopathic agent was isolated in cell culture, and the diagnosis of cowpox was confirmed by electron microscopy and polymerase chain reaction. The most likely source of infection was exposure to the family cats. In addition to the severe edematous cellulitis of the f

Methods to study phosphorylation and activation of the hormone-sensitive adipocyte phosphodiesterase type 3B in rat adipocytes

Cyclic nucleotide phosphodiesterases (PDEs) include a large group of structurally related enzymes that are responsible for the hydrolysis of cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). These enzymes belong to at least nine related gene families (PDEs 1–9) (1–5), which differ in their primary structures, affinities for cAMP and cGMP, responses to specific effect

Concentration of plastic strains in steel liners due to concrete cracks in the containment wall

A substantial part of nuclear containments in US and Europe are designed with an outer bearing concrete structure and an inner sealing consisting of a tight-welded steel liner. The liner constitutes the ultimate leak-barrier, which prevents leakage at high internal pressure loads. The purpose of this paper is to show which influence a through-wall concrete crack may have on the strain level in the

Simulations of time series of atmospherically distorted wavefronts

A comparatively simple way to generate time series of atmospherically distorted wave fronts is described and tested. Temporal power spectra of Zernike aberrations, extracted from the time series, agree very well with theoretical predictions. A method for generation of longer time series is also shown to give results in accordance with theory, except for the lowest temporal frequencies modeled. A w

Design, synthesis, and biological evaluation of combretastatin nitrogen-containing derivatives as inhibitors of tubulin assembly and vascular disrupting agents

A series of analogs with nitro or serinamide substituents at the C-2'-, C-5'-, or C-C-position of the combretastatin A-4 (CA4) B-ring was synthesized and evaluated for cytotoxic effects against heart endothelioma cells, blood flow reduction to tumors in SCID mice, and as inhibitors of tubulin polymerization. The synthesis of these analogs typically featured a Wittig reaction between a suitably fun

Characteristics of gel electrolytes formed by self-aggregating comb-shaped polyethers with end-functionalised side chains

Gel electrolytes based on comb-shaped polyethers have been prepared and characterised. The comb-shaped polyethers consisted of poly(ethylene oxide) (PEO) or poly(ethylene oxide-co-propylene oxide) (PEOPO) side chains tethered to styrenic backbone polymers. All the polyether side chains were terminated by hydrocarbon (C-16) chain ends. Polymer gel electrolytes were prepared by adding 10-70 wt.% of

Supply chain security - mitigation measures and a logistics multi-layered framework

Statistics show that large amounts of goods moved in distribution chains incur the risk for being stolen, counterfeited or contaminated. At the same time terror threats for smuggling weapons of mass destructions, or intentionally altering products, are pushing governments to require higher security from logistics and transport operators. As a consequence, supply chain managers have to face the dif

Lack of neuroprotection by heat shock protein 70 overexpression in a mouse model of global cerebral ischemia.

Heat shock protein 70 (Hsp70) is induced in cells by a variety of stress conditions, is known to be cytoprotective, and has been proposed to be neuroprotective during brain ischemia. A recently developed mouse model of 12-min global cerebral ischemia by bilateral common carotid artery occlusion with artificial ventilation and bilateral monitoring of regional cerebral blood flow by laser Doppler wa

DNA gel particles: Particle preparation and release characteristics

Aqueous mixtures of oppositely charged polyelectrolytes undergo associative phase separation, resulting in coacervation, gelation, or precipitation. This phenomenon has been exploited here to form DNA gel particles by interfacial diffusion. We report the formation of DNA gel particles by mixing solutions of DNA (either single-stranded (ssDNA) or double-stranded (dsDNA)) with solutions of cationic