Sökresultat

Filtyp

Din sökning på "*" gav 562808 sökträffar

Male mating constraints affect mutual mate choice: prudent male courting and sperm-limited females.

Costs of sperm production may lead to prudence in male sperm allocation and also to male mate choice. Here, we develop a life history-based mutual mate choice model that takes into account the lost-opportunity costs for males from time out in sperm recovery and lets mate competition be determined by the prevailing mate choice strategies. We assume that high mating rate may potentially lead to sper

Nuclear delivery of macromolecules: barriers and carriers.

Recent evidence for efficient delivery of macromolecules, such as peptides and nucleic acids, from the cell exterior to the nucleus offers the interesting possibility of developing novel treatments directed at intranuclear targets. The findings should also stimulate the search for physiological ligands that utilize similar transport mechanisms to regulate pathobiological processes. Cytokines, grow

Proteinase 3 and CD177 are expressed on the plasma membrane of the same subset of neutrophils.

Proteinase 3 (PR3) is found in granules of all nentrophils but also on the plasma membrane of a subset of nentrophils (mPR3). CD177, another neutrophil protein, also displays a bimodal surface expression. In this study, we have investigated the coexpression of these two molecules, as well as the effect of cell activation on their surface expression. We can show that CD177 is expressed on the same

Alpha 1-antichymotrypsin production in PSA-producing cells is common in prostate cancer but rare in benign prostatic hyperplasia

OBJECTIVE. To investigate the distribution and production of alpha 1-antichymotrypsin (ACT) and prostate-specific antigen (PSA) in benign hyperplastic and malignant prostatic tissue, respectively. METHODS. Using monoclonal anti-ACT and anti-PSA IgGs for immunocytochemistry and alkaline phosphatase conjugated 30-mer oligodeoxynucleotide probes for nonradioactive in situ hybridization, tissue specim

Relative systemic availability of budesonide in patients with asthma after inhalation from two dry powder inhalers

Background: To improve dosing consistency and product features, budesonide inhalation powder delivered via a dry powder inhaler (DPI) (DPI-A* 200 mu g) was redesigned to include lactose, a newly shaped mouthpiece, and a new dose indicator (DPI-B dagger). Budesonide CPI-B is available in two strengths (90 mu g, 180 mu g). Objective: To compare the relative rate and extent of the systemic availabili

Social capital, the miniaturisation of community, traditionalism and first time acute myocardial infarction: A prospective cohort study in southern Sweden.

This longitudinal study investigates the impact of social participation, trust and the combinations of social participation and trust on the incidence of first time acute myocardial infarction (AMI) in the population of Scania, southern Sweden. It is based on the cross-sectional 2000 public-health survey in Scania with a 59% participation rate and 13,604 participants, and prospective morbidity/mor

Combined rCBF and CSF biomarkers predict progression from mild cognitive impairment to Alzheimer's disease.

This study aimed to identify preclinical Alzheimer's disease (AD) in patients with mild cognitive impairment (MCI) using measurements of both regional cerebral blood flow (rCBF) and cerebrospinal fluid (CSF) biomarkers. Baseline rCBF assessments (133Xe method) were performed in 70 patients with MCI who were cognitively stable for 4–6 years, 69 patients with MCI who subsequently developed AD, and 3

Impact of urban water supply on energy use in China : a provincial and national comparison

To reduce greenhouse gas (GHG) emissions and help mitigate climate change, urban water systems need to be adapted so that electrical energy use is minimised. In this study, energy data from 2011 was used to quantify energy use in China’s urban water supply sector. The objective was to calculate the energy co-benefits of urban water conservation policies and compare energy use between China and oth

Book reviews 2016

This section contains reviews of two Swedish books on international taxation. First, the book Skatteavtal och generalklausuler, Ett komparativt perspektiv (TaxAgreements and General Anti-Avoidance Regulations, A Comparative Perspective) is recommended for those who study and work with international tax law. The book analyses how tax treaties function to limit contracting states’taxing powers relat

Novel insights from coleopteran and pollen evidence into the Lateglacial/Holocene transition in Aubrac, French Massif Central

The aim of this study is to describe the environmental and climate changes that occurred in the mountains of Aubrac at the transition between the Lateglacial and the Holocene, from a comparative analysis of fossil Coleoptera and pollen, and a series of 23 14C dates. The changes affecting the ecological categories of Coleoptera lead to a division of the sequence into 5 beetle assemblage zones (BAZ)

Ictal EEG source imaging in presurgical evaluation : High agreement between analysis methods

Purpose To determine the agreement between five different methods of ictal EEG source imaging, and to assess their accuracy in presurgical evaluation of patients with focal epilepsy. It was hypothesized that high agreement between methods was associated with higher localization-accuracy. Methods EEGs were recorded with a 64-electrode array. Thirty-eight seizures from 22 patients were analyzed usin

The genetic diversity, phylogeography and morphology of Elphidiidae (Foraminifera) in the Northeast Atlantic

Genetic characterisation (SSU rRNA genotyping) and Scanning Electron Microscope (SEM) imaging of individual tests were used in tandem to determine the modern species richness of the foraminiferal family Elphidiidae (Elphidium, Haynesina and related genera) across the Northeast Atlantic shelf biomes. Specimens were collected at 25 locations from the High Arctic to Iberia, and a total of 1013 indivi

Changes in El Niño – Southern Oscillation (ENSO) conditions during the Greenland Stadial 1 (GS-1) chronozone revealed by New Zealand tree-rings

The warming trend at the end of the last glacial was disrupted by rapid cooling clearly identified in Greenland (Greenland Stadial 1 or GS-1) and Europe (Younger Dryas Stadial or YD). This reversal to glacial-like conditions is one of the best known examples of abrupt change but the exact timing and global spatial extent remain uncertain. Whilst the wider Atlantic region has a network of high-reso

Regulating planned obsolescence: a review of legal approaches to increase product durability and reparability in Europe

Improving product durability and reparability can save natural resources and money for consumers but may not always be in the best interest of all manufacturers. With the emergence of the circular economy as an important policy objective in the European Union (EU), there is renewed interest in policies to promote durability and address planned obsolescence. Different legislative approaches are cur

Cholelithiasis during the first year of life : Case reports and literature review

Five cases are reported of children with gallstones diagnosed by ultrasound during their first 7 months of life. Of the four with symptomatic gallstones, one subsequently developed vitamin K deficiency syndrome with profuse bleedings. The children, who belonged to a defined population, were all diagnosed within an 18-month span, suggesting the frequency of early gallstone formation to be higher th

Piebaldism in a mentally retarded girl with rare deletion of the long arm of chromosome 4

A 4-year-old mentally retarded girl had congenital depigmentations of ventrolateral parts of the chest, abdomen, and legs. She also showed dysmorphic features of the head, thorax, and extremities, a pigmented ring in both irises, and a hernia of the left obliquus muscle. Cytogenetic investigations revealed deletion of chromosome 4 for the long arm segment q12-q21. The typical depigmentations, repo