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Persistence of the ecological niche in pond damselflies underlies a stable adaptive zone despite varying selection

Following the development of regression-based methods to estimate natural and sexual selection, evolutionary biologists have quantified the strength, mode, and direction of selection in natural populations. Although this approach has been successful, its limitations include the lack of replication across species, which compromises the generality of the inferences beyond microevolutionary time scal

Direct oral anticoagulants versus no anticoagulation for the prevention of stroke in survivors of intracerebral haemorrhage with atrial fibrillation (PRESTIGE-AF): a multicentre, open-label, randomised, phase 3 trial

Background: Direct oral anticoagulants (DOACs) reduce the rate of thromboembolism in patients with atrial fibrillation but the benefits and risks in survivors of intracerebral haemorrhage are uncertain. We aimed to determine whether DOACs reduce the risk of ischaemic stroke without substantially increasing the risk of recurrent intracerebral haemorrhage. Methods: PRESTIGE-AF is a multicentre, open

Spectral principal axis system (SPAS) and tuning of tensor-valued encoding for microscopic anisotropy and time-dependent diffusion in the rat brain

Tensor-valued encoding in diffusion MRI allows probing of microscopic anisotropy in tissue, however, time-dependent diffusion (TDD) can bias results unless b-tensors are carefully tuned to account for TDD. We propose two novel strategies for tuning b-tensors to enable accurate measurements without interference from TDD due to restricted diffusion. The first strategy involves identifying encoding t

Predictors of academic achievement and educational support for adolescents with developmental language disorder (DLD)

Purpose: Developmental language disorder (DLD) has known consequences on academic performance, and adaptations to teaching methods and material are often required to counteract negative outcomes. This study used first-hand reports from students with DLD and their caregivers to explore how individual and school-related factors influence academic achievement and provision of educational support. Met

Positron emission tomography ligand [11C]5-hydroxy-tryptophan can be used as a surrogate marker for the human endocrine pancreas

In humans, a well-developed serotonin system is localized to the pancreatic islets while being absent in exocrine pancreas. Assessment of pancreatic serotonin biosynthesis could therefore be used to estimate the human endocrine pancreas. Proof of concept was tested in a prospective clinical trial by comparisons of type 1 diabetic (T1D) patients, with extensive reduction of β-cells, with healthy vo

Obtaining regulatory T cells from uraemic patients awaiting kidney transplantation for use in clinical trials

Adoptive transfer of regulatory T cells (T(regs)) has been proposed for use as a cellular therapy to induce transplantation tolerance. Preclinical data are encouraging, and clinical trials with T(reg) therapy are anticipated. In this study, we investigate different strategies for the isolation and expansion of CD4(+) CD25(high) CD127(low) T(regs) from uraemic patients. We use allogeneic dendritic

Measurement of transplanted pancreatic volume using computed tomography : reliability by intra- and inter-observer variability

BACKGROUND: Unlike other solid organ transplants, pancreas allografts can undergo a substantial decrease in baseline volume after transplantation. This phenomenon has not been well characterized, as there are insufficient data on reliable and reproducible volume assessments. We hypothesized that characterization of pancreatic volume by means of computed tomography (CT) could be a useful method for

The free radical scavenger S-PBN significantly prolongs DSG-mediated graft survival in experimental xenotransplantation

BACKGROUND: Nitrones such as 2-sulfo-phenyl-N-tert-butyl nitrone (S-PBN) are known to trap and stabilize free radicals and to reduce inflammation. Recently, S-PBN was shown to reduce infiltration of T lymphocytes and the expression of adhesion molecules on the endothelium in experimental traumatic brain injury. We hypothesized that S-PBN could reduce infiltration of T lymphocytes during cell-media

Screening of mortality in transplant patients using an assay for immune function

BACKGROUND: So far, the ImmuKnow Immune Cell Function Assay (Cylex, Inc., Columbia, MD, USA) has been used to assess risks of infection and rejection in transplant patients. We hypothesized that the ImmuKnow assay might be used for mortality screening in transplant patients overall.METHODS: In the period of February 2007 to December 2009, at the Uppsala University Hospital, 362 patients who receiv

Venous thromboembolism in live kidney donors--a prospective study

AIM: The aim of this study was to evaluate risk factors for venous thromboembolism (VTE) and deep vein thrombosis after living donor nephrectomy in a center using extensive preoperative screening and perioperative venous duplex scan.MATERIAL AND METHODS: Thrombophilia screening and pre- and postoperative ultrasonographies were performed in 130 consecutive living kidney donors (laparoscopic 105, op

Pulmonary nocardiosis with brain abscess in a sensitized kidney transplant recipient with a history of repeated graft loss and HLA-antibody depletion treatment--a case report

Nocardiosis is an opportunistic infection with unfavourable prognosis and is predominantly seen in immunocompromised patients. We here present a kidney transplant recipient with a history of two early graft losses who subsequently developed Human Leukocyte Antigen (HLA)-antibodies and underwent a desensitization treatment with plasmapheresis and monoclonal anti-CD20 antibody application. However,

Perioperative characteristics and short-term morbidity after surgery for renal hyperparathyroidism : Multicentre EUROCRINE® registry study

Background Parathyroid surgery is an appropriate alternative for renal hyperparathyroidism (rHPT) in patients in whom medical therapy fails. European morbidity and outcome data for clearly defined cohorts, potentially reflecting contemporary clinical practice, remain scarce. Method Data were extracted from the EUROCRINE® database on all operations for secondary rHPT between 1 January 2015 and 31 D

Combination of searches for singly produced vectorlike top quarks in (Formula presented) collisions at (Formula presented) with the ATLAS detector

A combination of searches for the single production of vectorlike top quarks ((Formula presented)) is presented. These analyses are based on proton-proton collisions at (Formula presented) recorded in 2015-2018 with the ATLAS detector at the Large Hadron Collider, corresponding to an integrated luminosity of (Formula presented). The (Formula presented) decay modes considered in this combination ar

Protective Effects of the Complement Inhibitor Compstatin CP40 in Hemorrhagic Shock

Trauma-induced hemorrhagic shock (HS) plays a decisive role in the development of immune, coagulation, and organ dysfunction often resulting in a poor clinical outcome. Imbalanced complement activation is intricately associated with the molecular danger response and organ damage after HS. Thus, inhibition of the central complement component C3 as turnstile of both inflammation and coagulation is h

The multifaceted role of complement in kidney transplantation

Increasing evidence indicates an integral role for the complement system in the deleterious inflammatory reactions that occur during critical phases of the transplantation process, such as brain or cardiac death of the donor, surgical trauma, organ preservation and ischaemia-reperfusion injury, as well as in humoral and cellular immune responses to the allograft. Ischaemia is the most common cause

Prompt reversal of a severe complement activation by eculizumab in a patient undergoing intentional ABO-incompatible pancreas and kidney transplantation

We describe the presumably first intentional ABO-incompatible deceased-donor kidney and pancreas transplantation with a severe antibody-mediated rejection during a rebound of isoagglutinins. Rejection was successfully treated with eculizumab, which inhibits the terminal pathway of complement. Complement analysis (C3, C3d,g, and a modified assay of classical complement-related hemolytic function) d

Role and significance of plasma citrulline in the early phase after small bowel transplantation in pigs

A reliable serological marker of acute cellular rejection (ACR) after small bowel transplantation (SBTx) is still missing. Plasma citrulline level (PCL) reflects the functional integrity of intestinal mucosa which is partially lost during ACR. The aim of our study was to investigate the role of PCL as marker of ACR after SBTx. Eighteen German landrace pigs were used and divided into three groups.

Large Variation in Adherence to Diagnostic Guidelines in Hypertension Management in Swedish Primary Healthcare

High blood pressure (BP) is a frequent cause for visits to primary healthcare centers (PHCCs) in Sweden. Guidelines on methods for BP measurements for diagnosis of hypertension have recently been updated. We aimed to study adherence to diagnostic guidelines in hypertension management and evaluate whether adherence to guidelines was related to organizational or sociodemographic characteristics. Int