Search results

Filter

Filetype

Your search for "*" yielded 534427 hits

The influence of patent foramen ovale on oxygen desaturation in obstructive sleep apnoea

Obstructive sleep apnoea (OSA) is associated with oxygen desaturation to a varying degree. A patent foramen ovale (PFO) may allow interatrial right-to-left shunting. The hypothesis of the current study was that oxygen desaturation will occur more often, in proportion to the frequency of respiratory disturbances, in OSA subjects with PFO than in those without. In a group of 209 subjects diagnosed w

Fetal growth and onset of delivery: A nationwide population-based study of preterm infants

Objective: This study was undertaken to assess whether deviations from normal fetal growth are associated with spontaneous preterm delivery. Study design: A population-based study was performed, using Swedish Medical Birth Register data from 1991 through 2001. The total population comprised 1,007,648 singleton births. Intrauterine-derived growth standards were used to identify individual standard

Upregulation of a non-ETA receptor in human arteries in vitro

Receptor turnover may be a crucial part in the physiology of endothelin (ET). Incubation of vessel segments could be a possible method to demonstrate this. The aim was to study contractile responses of human omental arteries to different ET agonists at various periods after incubation at 37 degrees C in 5% CO2 and air. The maximum effect (Emax; percentage of contraction to 60 mM K+ buffer solution

Improvement of arabinoxylan isolation from barley husks

A method of extracting arabinoxylan from barley husks has previously been developed, but was found to suffer from three problems, namely: starch was dispersed in the aqueous phase during steam pretreatment, the yield of extracted arabinoxylan with high molecular mass was low in the steam pretreatment step, and there was high filtration resistance in the clarification step. This paper presents poss

Concomitant contact dermatitis due to textile dyes and to colour film developers can be explained by the formation of the same hapten

p-phenylenediamine derivatives are widely used in industry and in cosmetics, and several of them are well-known sensitizers. One group of allergenic p-phenylenediamine derivatives are used as colour film developers. Cross-reactivity between the colour film developers has been reported. In this paper, an occupational facial dermatitis due to colour film developers is described. The patient reacted

Primary prophylaxis in severe haemophilia should be started at an early age but can be individualized

The frequency of joint bleeds and orthopaedic joint scores were evaluated in 121 patients with severe haemophilia who had started prophylactic treatment with clotting factor concentrates at least once weekly before the age of 10. 75 of the patients started before the age of 3, 31 at the age of 3-5 and 15 at the age of 6-9. Each subgroup was evaluated separately. In addition, a regimen of one infus

Community education for cardiovascular disease prevention. Morbidity and mortality results from the Minnesota Heart Health Program

The Minnesota Heart Health Program was a community trial of cardiovascular disease prevention methods that was conducted from 1980 to 1990 in three Upper Midwestern communities with three matched comparison communities. A 5- to 6-year intervention program used community-wide and individual health education in an attempt to decrease population risk. A major hypothesis was that the incidence of vali

Early Eocene climatic, volcanic, and biotic events in the northwestern Tethyan Untersberg section, Austria

The 40 in thick Untersberg section (Salzburg, Austria) of the Northern Calcareous Alps comprises the Palaeocene-Eocene transition and spans the upper part of calcareous nannoplankton zone NP9 and the lower part of zone NP10 (subzone NP10a). These zones are equivalent to planktonic foraminifera zone P5 and the lower part of zone P6 (sub-zone P6a). The succession was deposited in a lower bathyal slo

Community Structure Evolution and Enrichment of Glycogen-Accumulating Organisms Producing Polyhydroxyalkanoates from Fermented Molasses

An open mixed culture was enriched with glycogen-accumulating organisms (GAOs) by using a sequencing batch reactor and treating an agroindustrial waste (sugar cane molasses) under cyclic anaerobic-aerobic conditions. Over a 1-year operating period, the culture exhibited a very stable GAO phenotype with an average polyhydroxyalkanoate (PHA) content of 17% total suspended solids. However, the GAO mi

No evidence for new dopaminergic neurons in the adult mammalian substantia nigra.

A recent report by Zhao et al. [Zhao, M., Momma, S., Delfani, K., Carlen, M., Cassidy, R. M., Johansson, C. B., Brismar, H., Shupliakov, O., Frisen, J. & Janson, A. M. (2003) Proc. Natl. Acad. Sci. USA 100, 7925–7930] suggests that dopaminergic neurons, the cell type lost in Parkinson's disease, are continuously generated in the adult substantia nigra pars compacta. Using similar methodologica

Feasibility of patient specific aortic blood flow CFD simulation

Patient specific modelling of the blood flow through the human aorta is performed using computational fluid dynamics (CFD) and magnetic resonance imaging (MRI). Velocity patterns are compared between computer simulations and measurements. The workflow includes several steps: MRI measurement to obtain both geometry and velocity, an automatic levelset segmentation followed by meshing of the geometri

Roxithromycin potentiates the effects of chloroquine and mefloquine on multidrug-resistant Plasmodium falciparum in vitro

Chloroquine (CQ) and mefloquine (MQ) are no longer potent antimalarial drugs due to the emergence of resistant Plasmodium falciparum. Combination therapy has become the standard for many regimes in overcoming drug resistance. Roxithromycin (ROM), a known p-glycoprotein inhibitor, is reported to have antimalarial activity and it is hoped it will potentiate the effects of both CQ/MQ and reverse CQ/M

A prospective analysis of the association between dietary fiber intake and prostate cancer risk in EPIC

Few studies have examined the association between dietary fiber intake and prostate cancer risk. We evaluated the association between dietary fiber intake and the risk of prostate cancer among 142,590 men in the European Prospective Investigation into Cancer and Nutrition (EPIC). Consumption of dietary fiber (total, cereal, fruit and vegetable fiber) seas estimated by validated dietary questionnai

Cytokines induce upregulation of vascular P2Y(2) receptors and increased mitogenic responses to UTP and ATP

P2Y(2) receptors, which mediate contractile and mitogenic effects of extracellular nucleotides in vascular smooth muscle cells (VSMCs), are upregulated in the synthetic phenotype of VSMCs and in the neointima after balloon angioplasty, suggesting a role in the development of atherosclerosis. Because released cytokines in atherosclerotic lesions mediate multiple effects on gene transcription in VSM

Old people in pain: A comparative study.

To investigate the prevalence of pain in older people (75+), compare those in pain to those without regarding demographics, social network, functional limitations, fatigue, sleeping problems, depressed mood and quality of life (QOL), and identify variables associated with pain, a cross-sectional, prospective survey was conducted in an age-stratified sample of 4,093 people aged 75–105 years old. Th

Broad-scale Increase in NPP Quantified for the African Sahel, 1982-1999

In association with a recently discovered greening trend in the Sahel, several interesting new perspectives have appeared in the literature regarding its climate and ecology. In this Letter, satellite data from 1982 to 1999 and a light use efficiency model are used to map net primary production (NPP) increases throughout the Sahel (total area of 1.13 x 10(13) m(2)). A patchy, east-west band of inc

Cheyne-Stokes respiration in patients hospitalised for heart failure

Background: Previous studies showing a strong relationship between Cheyne-Stokes respiration and the severity of left ventricular systolic dysfunction have usually been done in selected patient populations with lower age and a higher proportion of males than the "typical" in-hospital patient with heart failure. The purpose of the present study was test the strength of this relationship in unselect