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Activation of neutral sphingomyelinase participates in ethanol-induced apoptosis in Hep G2 cells

The mechanism underlying ethanol-induced apoptosis in liver cells is not clear. Sphingomyelin (SM) metabolism is a novel signal transduction pathway that has an impact on apoptosis in many cell types. We investigated whether the SM pathway is involved in ethanol-induced apoptosis in the liver. Hep G2 cells were treated with ethanol followed by assaying apoptosis, sphingomyelinase (SMase) activity,

Effect of Four-alpha-Helix Bundle Cavity Size on Volatile Anesthetic Binding Energetics.

Currently, it is thought that inhalational anesthetics cause anesthesia by binding to ligand-gated ion channels. This is being investigated using four-alpha-helix bundles, small water-soluble analogues of the transmembrane domains of the "natural" receptor proteins. The study presented here specifically investigates how multiple alanine-to-valine substitutions (which each decrease the volume of th

Proteomic analysis of the soluble fraction from human corneal fibroblasts with reference to ocular transparency

The transparent corneal stroma contains a population of corneal fibroblasts termed keratocytes, which are interspersed between the collagen lamellae. Under normal conditions, the keratocytes are quiescent and transparent. However, after corneal injury the keratocytes become activated and transform into backscattering wound-healing fibroblasts resulting in corneal opacification. At present, the mos

Proton magnetic resonance spectroscopy in brain tumours: clinical applications

Parallel to the rapid development of clinical MRI, MR spectroscopy (MRS) has, after starting as an analytical tool used in chemistry and physics, evolved to a noninvasive clinical examination. Most common neuroradiological diagnostic indications for MRS are functional inborn errors, neonatal hypoxia, ischaemia, metabolic diseases, white matter and degenerative diseases, epilepsy, inflammation, inf

Surveillance of Vaccine Safety: Comparison of parental reports with routine surveillance and a clinical trial

One way to maintain confidence in vaccination programmes is to improve monitoring of immunisation safety. We studied active parental reporting of adverse events after a booster dose of diphtheria-tetanus toxoid (DT). 7193 children received the vaccine. Questionnaires were submitted by 84.2% of the parents, who reported reactions for 9.2% of the children. Four percent of events were classified as m

On Equal Terms - a University Course for Social Work Students and Service Users

It is crucial for social work education to provide opportunities for students to gain a sincere and genuine knowledge of the conditions of life that are common for their forthcoming clients and patients. Social work students and service users with experiences with multiple social and personal problems now meet, as they are participants in an experimental course at the School of Social Work in Lund

Disorders of the neck and upper limbs in women in the fish processing industry

OBJECTIVE--The aim was to study the association between personal factors and physical and psychosocial work environment factors and disorders of the neck or upper limbs among women in the fish processing industry. METHODS--A cross sectional study was performed on 206 women in the fish processing industry and 208 control women. Several physical and psychosocial work environment factors were evaluat

A systematic overview of radiation therapy effects in ovarian cancer

A systematic review of radiation therapy trials in several tumour types was performed by The Swedish Council of Technology Assessment in Health Care (SBU). The procedures for evaluation of the scientific literature are described separately (Acta Oncol 2003; 42: 357-365). This synthesis of the literature on radiation therapy for ovarian cancer is based on data from six randomized trials. Moreover,

A Modelica Library for Paper Machine Dryer Section Modeling - DryLib - and applications

Following increased efforts during the last decade to formulate mathematical models for the paper drying process, this paper presents a Modelica library, DryLib, which enables users to rapidly develop complex models of paper machine dryer sections. In addition, parameter optimization, model reduction and moisture control by means of Non-Linear Model Predictive Control is treated. These application

What determines the current presence or absence of permafrost in the Tornetrask region, a sub-arctic landscape in Northern Sweden?

In a warming climate, permafrost is likely to be significantly reduced and eventually disappear from the sub-Arctic region. This will affect people at a range of scales, from locally by slumping of buildings and roads to globally as melting of permafrost will most likely increase the emissions of the powerful greenhouse gas methane, which will further enhance global warming. In order to predict fu

Allergic disease, immunoglobulins, exposure to mercury and dental amalgam in Swedish adolescents

High-dose exposure to inorganic mercury in man can influence the immune system and in rare cases cause immune-related disease. Some experimental animals also react with autoimmunity after low doses of inorganic mercury. Glomerulonephritis and an increased formation of immunoglobulin type E (IgE) are characteristic of these reactions. A recent study of 15-year-old adolescents demonstrated an associ

Risk factors for hip fractures in a middle-aged population: a study of 33,000 men and women.

Knowledge about subjects who sustain hip fractures in middle age is poor. This study prospectively investigated risk factors for hip fracture in middle age and compared risk factors for cervical and trochanteric hip fractures. The Malmo Preventive Project consists of 22,444 men, mean age 44 years, and 10,902 women, mean age 50 years at inclusion. Baseline assessment included multiple examinations

Vascular effects of anandamide and N-acylvanillylamines in the human forearm and skin microcirculation.

1 The endocannabinoid anandamide is an emerging potential signalling molecule in the cardiovascular system. Anandamide causes vasodilatation, bradycardia and hypotension in animals and has been implicated in the pathophysiology of endotoxic, haemorrhagic and cardiogenic shock, but its vascular effects have not been studied in man. 2 Human forearm blood flow and skin microcirculatory flow were reco