Sökresultat

Filtyp

Din sökning på "*" gav 531444 sökträffar

Long-term incidence of endometrial cancer after endometrial resection and ablation : A population based Swedish gynecologic cancer group (SweGCG) study

Introduction: Minimally invasive methods to reduce menorrhagia were introduced in the 1980s and 1990s. Transcervical endometrial resection (TCRE) and endometrial ablation (EA) are two of the most frequently used methods. As none of them can guarantee a complete removal of the endometrium, there are concerns that the remaining endometrium may develop to endometrial cancer (EC) later in life. The pr

Free vitamin D3 index and vitamin D-binding protein in multiple sclerosis : A presymptomatic case–control study

Background and purpose: High levels of 25-hydroxyvitamin D3 (25[OH]D3) are associated with a lower risk for multiple sclerosis (MS). The bioavailability of 25(OH)D3 is regulated by its main plasma carrier, vitamin D-binding protein (DBP). Free 25(OH)D3 can be estimated by also measuring DBP concentration. In addition, DBP has immunomodulatory functions that may independently affect MS pathogenesis

PSI-PSYCHO SCHIZOPHRENIA IMAGING : Hjärnavbildning vid Schizofreni. Del 3. Magnetisk resonans och schizofreni

Denna tredje del av Hjärnavbildning vid Schizofreni sammanfattar olika metoder med magnet spinn resonans (MR) applicerade på Schizofreni patienter 1. Introduktion till MR2. Struktur-magnet resonans imaging sMRI3. MR-CSF cerebralt blodflödes imaging4. Funktionell-magnet resonans imaging MRI5. Diffusion Tensor Imaging DTI6. Magnetisk transfer Imaging MTI7. Magnet resonans spektrometri MRS8. Kombine

Interacting phenotypes and the coevolutionary process : Interspecific indirect genetic effects alter coevolutionary dynamics

Coevolution occurs when species interact to influence one another's fitness, resulting in reciprocal evolutionary change. In many coevolving lineages, trait expression in one species is modified by the genotypes and phenotypes of the other, forming feedback loops reminiscent of models of intraspecific social evolution. Here, we adapt the theory of within-species social evolution, characterized by

Extensive pollinator sharing does not promote character displacement in two orchid congeners

Pollinator sharing between close relatives can be costly and can promote pollination niche partitioning and floral divergence. This should be reflected by a higher species divergence in sympatry than in allopatry. We tested this hypothesis in two orchid congeners with overlapping distributions and flowering times. We characterized floral traits and pollination niches and quantified pollen limitati

Seasonal variation in the response to a toxin-producing cyanobacteria in Daphnia

Many populations of water fleas (Daphnia) are exposed to algal blooms dominated by microcystin-producing cyanobacteria. However, the severity of these effects on Daphnia fitness remain poorly understood in natural populations. We investigated seasonal changes in body size, reproduction and survival of D. longispina individuals from five eutrophic lakes in southern Sweden. We tested whether individ

Assessing taxonomic and functional change in British breeding bird assemblages over time

Aim: The aim was to identify the primary drivers of compositional change in breeding bird assemblages over a 40-year period. Location: Britain. Time period: From 1970 to 2010. Major taxa studied: Birds. Methods: Using morphological trait measurements and a dataset of presence–absence data for British breeding birds surveyed in 10 km × 10 km hectads during two time periods, we calculated temporal t

Outgroup exclusion, identity, and collective action in the Brexit context

This paper explored how the source of exclusion (ingroup/outgroup) influences ingroup identification and political engagement. It is well documented that social exclusion has a negative impact on individuals' well-being, but less is known how it affects identification with the ingroup, and subsequent behavior. In two studies, one survey (N = 193) and one experiment (N = 384), we explore how exclus

Att möta människors oro och rädsla för björn och varg : Praktiska råd och vetenskapligt kunskapsunderlag

Människors oro och rädsla för stora rovdjur har under de senaste tio åren studerats inom tvärvetenskapliga samarbeten mellan miljöpsykologi, emotionspsykologi och viltekologi. Forskningen har fokuserat på att förstå underliggande orsaker till människors oro och rädsla samt att utveckla och utvärdera olika förvaltningsåtgärder för situationer då människor uttrycker rädsla för stora rovdjur.Naturvår

Application of precision medicine in clinical routine in haematology—Challenges and opportunities

Precision medicine is revolutionising patient care in cancer. As more knowledge is gained about the impact of specific genetic lesions on diagnosis, prognosis and treatment response, diagnostic precision and the possibility for optimal individual treatment choice have improved. Identification of hallmark genetic aberrations such as the BCR::ABL1 gene fusion in chronic myeloid leukaemia (CML) led t

A trophic cascade causes unexpected ecological interactions across the aquatic–terrestrial interface under extreme weather

Trophic cascades in the aquatic environment constitute important mechanisms for improving water quality. However, how the presence or non-presence of these trophic cascades may affect interactions across the aquatic–terrestrial interface remains poorly investigated. Pollinators such as bees may be especially vulnerable to changes in water resource quality induced by trophic cascades. Understanding

Mothers of children with down syndrome : A qualitative study of experiences of breastfeeding and breastfeeding support

Background: Children with down syndrome (DS) are breastfed to a lesser extent than infants in general, despite research showing that it is possible for these children to breastfeed successfully. Aim: The aim was to describe how mothers of children with DS experienced breastfeeding and breastfeeding support from healthcare professionals. Method: A qualitative study with an inductive approach. Indiv

The mitochondrial LYR protein SDHAF1 is required for succinate dehydrogenase activity in Arabidopsis

Succinate dehydrogenase (SDH, complex II), which plays an essential role in mitochondrial respiration and tricarboxylic acid metabolism, requires the assembly of eight nuclear-encoded subunits and the insertion of various cofactors. Here, we report on the characterization of an Arabidopsis thaliana leucine-tyrosine-arginine (LYR) protein family member SDHAF1, (At2g39725) is a factor required for S

Prospects for the expansion of standing wave ambient pressure photoemission spectroscopy to reactions at elevated temperatures

Standing wave ambient pressure photoemission spectroscopy (SWAPPS) is a promising method to investigate chemical and potential gradients across solid-vapor and solid-liquid interfaces under close-to-realistic environmental conditions, far away from high vacuum. Until now, these investigations have been performed only near room temperature, but for a wide range of interfacial processes, chief among

Rapid marine oxygen variability : Driver of the Late Ordovician mass extinction

The timing and connections between global cooling, marine redox conditions, and biotic turnover are underconstrained for the Late Ordovician. The second most severe mass extinction occurred at the end of the Ordovician period, resulting in ~85% loss of marine species between two extinction pulses. As the only “Big 5” extinction that occurred during icehouse conditions, this interval is an importan

Re-Os geochronology for the Cambrian SPICE event : Insights into euxinia and enhanced continental weathering from radiogenic isotopes

The late Cambrian Steptoean positive carbon isotope excursion (SPICE) represents a major perturbation to the global carbon cycle and was associated with trilobite extinctions and expansion of anoxic and/or euxinic water masses during episodes of eustatic sea-level change. We present a new Re-Os age together with Os and Nd isotope stratigraphy and major and trace-element data from the Alum Shale Fo

Five-year follow-up of new cases after a coeliac disease mass screening

OBJECTIVE: We previously performed a population-based mass screening of coeliac disease in children aged 12 years in two birth cohorts resulting in 296 seropositive children, of whom 242 were diagnosed with coeliac disease after duodenal biopsies. In this follow-up study, we wanted to identify new cases in the screening population that tested negative-either converting from potential coeliac disea

Immigrant ancestry and birthweight across two generations born in Sweden : An intergenerational cohort study

Introduction Differences in birthweight are often seen between migrants and natives. However, whether migrant-native birthweight inequalities widen, narrow or remain persistent across generations when comparing the descendants of immigrants and natives remains understudied. We examined inequalities in birthweight of mothers (G2) and daughters (G3) of foreign-born grandmothers (G1) compared with th

Systematic review of low-income and middle-income country perceptions of visiting surgical teams from high-income countries

Background The shortage of surgeons, anaesthesiologists and obstetricians in low-income and middle-income countries (LMICs) is occasionally bridged by foreign surgical teams from high-income countries on short-term visits. To advise on ethical guidelines for such activities, the aim of this study was to present LMIC stakeholders' perceptions of visiting surgical teams from high-income countries. M

SLEEP : Intervention with weighted blankets for children with attention deficit hyperactivity disorder (ADHD) and sleep problems: Study protocol for a randomised control trial

Introduction and objectives Children with attention deficit hyperactivity disorder (ADHD) have an increased risk of sleep problems. Weighted blankets are one possible non-pharmacological intervention for these problems in this group of children. However, the effectiveness of weighted blankets is insufficiently investigated. This study aims to investigate the effectiveness of weighted blankets in t