Sebastian Steven results 31
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Clustering of the T-cell receptor complex may facilitate T-cell activation by stretching of CD3$$\zeta$$ cytoplasmic tailsNARA Subscribed
Motivated by experimental observations that T-cells can activate as a consequence of clustering of T-cell receptors, we hypothesize that steric confinement between the intracellular chains of the TCR could play a role. Using coarse-grained simulations, we show that steric interactions between TCRs are sufficient to induce appreciable stretch of the intracellular domains of CD3 $$\zeta$$ chains. We propose a model, in which the...
Aim The urgency for remote, reliable and scalable biodiversity monitoring amidst mounting human pressures on ecosystems has sparked worldwide interest in Passive Acoustic Monitoring (PAM), which can track life underwater and on land. However, we lack a unified methodology to report this sampling effort and a comprehensive overview of PAM coverage to gauge its potential as a global research and monitoring tool. To address this...
The MOOSE fluid properties moduleNARA Subscribed
Aim To evaluate the population pharmacokinetics of unbound F-Ara-A (the circulating metabolite of fludarabine) in 211 patients (age range, 0.1–63.4 years) undergoing allogeneic haematopoietic stem cell transplantation conditioning. Methods Total ( n = 2480) and unbound ( n = 1403) F-Ara-A concentrations were measured in blood samples collected at timed intervals after fludarabine doses ranging from 10 to 50 mg/m 2 and infused...
Unearthing the soil‐borne microbiome of land plantsNARA Subscribed
Plant–soil biodiversity interactions are fundamental for the functioning of terrestrial ecosystems. Yet, the existence of a set of globally distributed topsoil microbial and small invertebrate organisms consistently associated with land plants (i.e., their consistent soil‐borne microbiome), together with the environmental preferences and functional capabilities of these organisms, remains unknown. We conducted a standardized f...
Prolonging survival in good health is a fundamental societal goal. However, the leading determinants of disability-free survival in healthy older people have not been well established. Data from ASPREE, a bi-national placebo-controlled trial of aspirin with 4.7 years median follow-up, was analysed. At enrolment, participants were healthy and without prior cardiovascular events, dementia or persistent physical disability. Disab...
An Integrated Dialysis Pharmacometric (IDP) Model to Evaluate the Pharmacokinetics in Patients Undergoing Renal Replacement TherapyNARA Subscribed
Purpose Clearance via renal replacement therapy (RRT) can significantly alter the pharmacokinetic profile of drugs. The aim of this study was (i) to improve the use of clinical trial data and (ii) to provide a model that allows quantification of all aspects of drug elimination via RRT including adsorption to dialysis membranes and/or degradation of the drug in the dialysate. Methods An integrated dialysis pharmacometric (IDP)...
Range size and growth temperature influence Eucalyptus species responses to an experimental heatwaveNARA Subscribed
Understanding forest tree responses to climate warming and heatwaves is important for predicting changes in tree species diversity, forest C uptake, and vegetation–climate interactions. Yet, tree species differences in heatwave tolerance and their plasticity to growth temperature remain poorly understood. In this study, populations of four Eucalyptus species, two with large range sizes and two with comparatively small range si...
Humans alter biogeochemical cycles of essential elements such as phosphorus (P). Prediction of ecosystem consequences of altered elemental cycles requires integration of ecology, evolutionary biology and the framework of ecological stoichiometry. We studied micro‐evolutionary responses of a herbivorous rotifer to P‐limited food and the potential consequences for its population demography and for ecosystem properties. We subjec...