Sökresultat

Filtyp

Din sökning på "*" gav 531145 sökträffar

Perioperative autotransfusion and functional coagulation analysis in total hip replacement.

Functional coagulation analyses like Sonoclot and thromboelastography have not been evaluated during perioperative autotransfusion. We have prospectively studied three different transfusion regimes in 45 patients undergoing total hip arthroplasty. Blood losses were replaced either with heterologous erythrocyte concentrate (group I), intra- and postoperative autotransfusion of blood salvaged with c

Genomic Changes in Chromosomes 10, 16, and X in Malignant Peripheral Nerve Sheath Tumors Identify a High-Risk Patient Group.

PURPOSE: The purpose of this study was to identify genetic aberrations contributing to clinical aggressiveness of malignant peripheral nerve sheath tumors (MPNSTs). PATIENTS AND METHODS: Samples from 48 MPNSTs and 10 neurofibromas were collected from 51 patients with (n = 31) or without (n = 20) neurofibromatosis type 1 (NF1). Genome-wide DNA copy number changes were assessed by chromosomal and ar

Aerobic fitness related to cardiovascular risk factors in young children.

Low aerobic fitness (maximum oxygen uptake (VO(2PEAK))) is predictive for poor health in adults. In a cross-sectional study, we assessed if VO(2PEAK) is related to a composite risk factor score for cardiovascular disease (CVD) in 243 children (136 boys and 107 girls) aged 8 to 11 years. VO(2PEAK) was assessed by indirect calorimetry during a maximal exercise test and scaled by body mass (millilite

Association between synovial fluid levels of aggrecan ARGS fragments and radiographic progression in knee osteoarthritis.

ABSTRACT: INTRODUCTION: Aggrecanase cleavage at the 392Glu-393Ala bond in the interglobular domain (IGD) of aggrecan, releasing N-terminal 393ARGS fragments, is an early key event in arthritis and joint injuries. We determined whether synovial fluid (SF) levels of ARGS-aggrecan distinguish subjects with progressive radiographic knee osteoarthritis (ROA) from those with stable or no ROA. METHODS: W

The impact of changes in different aspects of social capital and material conditions on self-rated health over time: A longitudinal cohort study.

Individual aspects of social capital have been shown to have significant associations with health outcomes. However, research has seldom tested different elements of social capital simultaneously, whilst also adjusting for other well-known health determinants over time. This longitudinal individual-level study investigates how temporal changes in social capital, together with changes in material c

Construct validity of the SF-12 in three different samples.

Rationale, aims and objectives Studies have challenged the validity and underlying measurement model of the physical and mental component summary scores of the 36-item Short-Form Health Survey in, for example the elderly and people with neurological disorders. However, it is unclear to what extent these observations translate to physical and mental component summary scores derived from the 12-item

Stem cell regulation and host defense: the logic and the paradox.

As a response against serious infection, there is often a need to produce more leukocytes to defend the organism against the infectious agent. In this issue of Cell Stem Cell, Goodell and colleagues (Feng et al., 2008) find a link between regulators of host defense and hematopoietic stem cells.

Remodeling of extra-bronchial lung vasculature following allergic airway inflammation.

BACKGROUND: We previously observed that allergen-exposed mice exhibit remodeling of large bronchial-associated blood vessels. The aim of the study was to examine whether vascular remodeling occurs also in vessels where a spill-over effect of bronchial remodeling molecules is less likely. METHODS: We used an established mouse model of allergic airway inflammation, where an allergic airway inflammat

Allergic contact dermatitis as a complication of lid loading with gold implants.

Paralysis of the orbicularis oculi muscle in patients with a facial nerve injury causes functional and cosmetic disabilities including inability to close the eyelid. This complication is often treated by implanting a gold weight in the upper eyelid, which, however, is not without side effects. Four patients are described who, after lid loading with a gold implant, acquired an inflammatory reaction

Effectiveness of interventions to enhance healing of chronic ulcers of the foot in diabetes: a systematic review.

The outcome of management of diabetic foot ulcers remains a challenge and there remains continuing uncertainty concerning optimal approaches to management. It is for these reasons that in 2008 and 2012 the International Working Group of the Diabetic Foot (IWGDF) working group on wound healing published systematic reviews of the evidence to inform protocols for routine care and to highlight areas w

Schizophrenia in Medline 1950-2006: A bibliometric investigation.

The aim was to perform a bibliometric study, and compare the quantity of publications on schizophrenia with the total medical literature in Medline during 57 years, 1950-2006. The annual additions of literature to Medline are continually increasing and form the Medline growth curve. Comparisons of the number of publications on schizophrenia, or any other disease, to this curve, may be used to esti

ALG1-CDG: Clinical and Molecular Characterization of 39 Unreported Patients.

Congenital disorders of glycosylation (CDG) arise from pathogenic mutations in over one hundred genes leading to impaired protein or lipid glycosylation. ALG1 encodes a β1,4 mannosyltransferase that catalyzes the addition of the first of nine mannose moieties to form a dolichol-lipid linked oligosaccharide intermediate (DLO) required for proper N-linked glycosylation. ALG1 mutations cause a rare a

Polystyrene nanoparticles affecting blood coagulation.

Association of nanoparticles with blood coagulation proteins may influence the natural balance between pro-and anticoagulant pathways. We investigated whether polystyrene nanoparticles, when added to human plasma, affected the generation of thrombin in plasma. Amine-modified nanoparticles were found to decrease the thrombin formation due to binding of factor VII and IX to the nanoparticles, which

Linear Controllers for Exponential Tracking of Systems in Chained Form

In this paper we address the tracking problem for a class of non-holonomic chained-form control systems. We present a simple solution for both the state feedback and the dynamic output feedback problem. The proposed controllers are linear and render the tracking error dynamics globally 𝒦-exponentially stable. We also deal with both control problems under input saturation. Application of t

Real-time method for fitting time-resolved reflectance and transmittance measurements with a Monte Carlo model

An efficient method is proposed for the evaluation of the absorption and the transport scattering coefficients from a time-resolved reflectance or transmittance distribution. The procedure is based on a library of Monte Carlo simulations and is fast enough to be used in a nonlinear fitting algorithm. Tests performed against both Monte Carlo simulations and experimental measurements on tissue phant

Influence of naloxone infusion on analgesia and respiratory depression following epidural morphine.

The influence of two different concentrations of iv naloxone infusion on the analgesia and adverse effects of epidural morphine were compared in a double-blind, placebo-controlled study. Forty-five patients undergoing gallbladder surgery were provided postoperative analgesia by 4 mg epidural morphine; they then received an iv infusion over a 12-h period consisting of either 5 micrograms X kg-1 X h

Fibrillatory rate response to candesartan in persistent atrial fibrillation.

Introduction Angiotensin-receptor blockers may exert favourable anti-arrhythmic effects in atrial fibrillation (AF), but their mechanisms are not fully understood. In this study, we tested the hypotheses that (i) candesartan reduces atrial fibrillatory rate and (ii) fibrillatory rate and its response to candesartan are related with the outcome of cardioversion. For this purpose, a post hoc subanal

Gastrin response to candidate messengers in intact conscious rats monitored by antrum microdialysis.

We monitored gastrin release in response to locally applied candidate messengers in intact conscious rats. Earlier studies have been performed on anaesthetized animals, isolated pieces of antrum, or purified preparations of gastrin cells. In this study we created an experimental situation to resemble physiological conditions, using reverse microdialysis to administer regulatory peptides and amines

What is the Role of Chemotherapy in Endometrial Cancer?

Adjuvant pelvic radiotherapy has the potential to eradicate micrometastases within the irradiated field but has not resulted in survival improvements in randomized studies. This illustrates the need for systemic therapy. Chemotherapy, mainly with anthracyclines, platinum compounds, and taxanes, renders high response rates although this unfortunately translates in only modest improvements in progre