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Evidence of concurrentlocal adaptation and high phenotypic plasticityin a polar microeukaryote.

Here we investigated whether there is evidence of local adaptation in strains of an ancestrallymarine dinoflagellate to the lacustrine environment they now inhabit(optimal genotypes) and/orif they have evolved phenotypic plasticity (a range of phenotypes). Eleven strains of Polarella glacialis were isolated and cultured from three different environments: the polar seas, ahyposaline,and a hypersali

In search of legitimacy - registered nurses' experience of providing palliative care in a municipal context.

Background: The palliative care approach was originally developed for hospice care and for persons with cancer diseases, but has gradually expanded to embrace other contexts and people of all ages, with various life-threatening diseases. The palliative care concept thus also applies to older people and the context of municipal care, where Registered Nurses (RNs) hold key care provision positions.

Danish translation and psychometric testing of the Rivermead Mobility Index.

OBJECTIVES: The Rivermead Mobility Index (RMI) is widely used in several neurological conditions including multiple sclerosis (MS), but its psychometric properties have not been documented in Scandinavia. Therefore, the aim of the study was to translate RMI from UK English into Danish and conduct an initial psychometric testing of the Danish RMI. MATERIALS AND METHODS: The Danish translation condu

No Association of VEGF Polymorphims with Alzheimer's Disease

The vascular hypothesis of Alzheimer's disease (AD) has brought the vascular endothelial growth factor (VEGF) into focus. The genomic region including the VEGF gene has been linked to AD and single nucleotide polymorphisms (SNPs) of the VEGF have in previous studies been associated with AD risk. To further evaluate these findings, we genotyped two SNPs in the VEGF gene (rs699947 [-2578]) and rs157

Fast and reversible insertion of carbon dioxide into zirconocene-alkoxide bonds. A mechanistic study

In two consecutive equilibria the compound (Cp*)(2)Zr(OMe)(2) undergoes insertion of CO2 to form the mono- and bis-hemicarbonates. Both equilibria are exothermic but entropically disfavoured. Magnetisation transfer experiments gave kinetic data for the first equilibrium showing that the rate of insertion is overall second order with a rate constant of 3.20 +/- 0.12 M-1 s(-1), which is substantiall

Proteome-based biomarkers in pancreatic cancer.

Pancreatic cancer, as a highly malignant cancer and the fourth cause of cancer-related death in world, is characterized by dismal prognosis, due to rapid disease progression, highly invasive tumour phenotype, and resistance to chemotherapy. Despite significant advances in treatment of the disease during the past decade, the survival rate is little improved. A contributory factor to the poor outcom

Individual and collective bodies: using measures of variance and association in contextual epidemiology.

BACKGROUND: Social epidemiology investigates both individuals and their collectives. While the limits that define the individual bodies are very apparent, the collective body's geographical or cultural limits (e.g., "neighbourhood") are more difficult to discern. Also, epidemiologists normally investigate causation as changes in group means. However, many variables of interest in epidemiology may

Mapping of the factor Xa-binding site on factor Va by site-directed mutagenesis.

Activated coagulation factor V functions as a cofactor to factor Xa in the conversion of prothrombin to thrombin. Based on introduction of extra carbohydrate side chains in recombinant factor V, we recently proposed several regions in factor Va to be important for factor Xa binding. To further define which residues are important for factor Xa binding, we prepared fifteen recombinant factor V varia

Coronary flow before and after surgical versus device closure of atrial septal defect.

BACKGROUND: Cardiopulmonary bypass (CPB) affects coronary flow after the operation. Surgical as compared to device closure of atrial septal defect (ASD) serves as a good model to clarify the effects of surgery with CPB on coronary flow. METHODS: Coronary flow parameters were determined by transthoracic Doppler echocardiography before and after ASD closure. Thirteen children underwent surgery on CP

Two dermatan sulfate epimerases form iduronic acid domains in dermatan sulfate.

A second dermatan sulfate epimerase (DS-epi2) was identified as a homolog of the first epimerase (DS-epi1), which was previously described by our group. DS-epi2 is 1,222 a.a. long and has a ~700-a.a. N-terminal epimerase domain that is highly conserved between the two enzymes. In addition, the C-terminal portion is predicted to be an O-sulfotransferase domain. In this study we found that DS-epi2 h

Identification of the active site of DS-epimerase 1 and requirement of N-glycosylation for enzyme function.

Dermatan sulfate is a highly sulfated polysaccharide and has a variety of biological functions in development and disease. Iduronic acid domains in dermatan sulfate, which are formed by the action of two DS-epimerases, have a key role in mediating these functions. We have identified the catalytic site and three putative catalytic residues in DS-epimerase 1, His205, Tyr261 and His450, by tertiary s

Locus-specific protocol for nine different innate immune genes (antimicrobial peptides: beta-defensins) across passerine bird species reveals within-species coding variation and a case of trans-species polymorphisms

We present a locus-specific protocol suitable for the investigation, from extracted DNA, into natural inter- and intra-specific genetic variation in a group of nine innate immune genes, all belonging to the β-defensin gene family. The products of these genes encode peptides with antimicrobial properties and form part of the innate immune system. The protocol amplifies the exon coding for the pepti

Vortex interactions with flapping wings and fins can be unpredictable.

As they fly or swim, many animals generate a wake of vortices with their flapping fins and wings that reveals the dynamics of their locomotion. Previous studies have shown that the dynamic interaction of vortices in the wake with fins and wings can increase propulsive force. Here, we explore whether the dynamics of the vortex interactions could affect the predictability of propulsive forces. We st

The emission factor of volatile isoprenoids: stress, acclimation, and developmental responses

The rate of constitutive isoprenoid emissions from plants is driven by plant emission capacity under specified environmental conditions (E-S, the emission factor) and by responsiveness of the emissions to instantaneous variations in environment. In models of isoprenoid emission, E-S has been often considered as intrinsic species-specific constant invariable in time and space. Here we analyze the v