73,232 results match your criteria: "Uppsala University; Tanel.Punga@imbim.uu.se.[Affiliation]"

The oxidative pentose phosphate pathway (OPPP) plays an important role for the generation of reducing power in all eukaryotes. In plant cells the OPPP operates in several cellular compartments, but as full cycle only in the plastid stroma where it is essential. As suggested by our recent results, OPPP reactions are also mandatory inside peroxisomes, at least during fertilisation.

View Article and Find Full Text PDF

Trees First Inhibit Then Promote Litter Decomposition in the Subarctic.

Ecol Lett

January 2025

Biological and Environmental Sciences, School of Natural Sciences, University of Stirling, Stirling, UK.

Trees affect organic matter decomposition through allocation of recently fixed carbon belowground, but the magnitude and direction of this effect may depend on substrate type and decomposition stage. Here, we followed mass loss, chemical composition and fungal colonisation of leaf and root litters incubated in mountain birch forests over 4 years, in plots where belowground carbon allocation was severed by tree girdling or in control plots. Initially, girdling stimulated leaf and root litter mass loss by 12% and 22%, respectively, suggesting competitive release of saprotrophic decomposition when tree-mediated competition by ectomycorrhizal fungi was eliminated (Gadgil effect).

View Article and Find Full Text PDF

Background: To align with climate goals, greenhouse gas (GHG) emissions from agriculture must be reduced significantly. Cultivated peatlands are an important source of such emissions. One proposed measure is to convert arable fields on peatlands to grassland, as the Intergovernmental Panel on Climate Change (IPCC) default emission factors (EF) for organic soils are lower from grasslands.

View Article and Find Full Text PDF

Background: Despite equality and quality being the core of good healthcare, racial and ethnic inequalities continue to persist. Racialized groups, including racialized migrant women, experience various forms of discrimination-particularly during maternal care encounters, where intersectional forms of discrimination may occur. Experiences of discrimination in maternal care have been associated with poor health-seeking behavior and adverse maternal health outcomes.

View Article and Find Full Text PDF

Background: Antibiotic heteroresistance is a common bacterial phenotype characterised by the presence of small resistant subpopulations within a susceptible population. During antibiotic exposure, these resistant subpopulations can be enriched and potentially lead to treatment failure. In this study, we examined the prevalence, misclassification, and clinical effect of heteroresistance in Escherichia coli bloodstream infections for the clinically important antibiotics cefotaxime, gentamicin, and piperacillin-tazobactam.

View Article and Find Full Text PDF

Purpose: To improve patient care by describing teachers' and school leaders' experiences in teaching children diagnosed with cancer, to better understand which information would be beneficial for schools to receive from the healthcare system.

Methods: This qualitative study was based on semi-structured interviews with 15 teachers and six school leaders in primary, secondary, and high schools in Sweden (student ages 6-18). The data was analyzed with thematic analysis.

View Article and Find Full Text PDF

Objectives: To report on the incidence of optic nerve kinking in a series of patients diagnosed with normal-tension glaucoma (NTG) compared to an age- and gender matched control group without known optic nerve diseases.

Subjects And Methods: All patients with NTG who underwent imaging (computed tomography cysternography (CTC) or magnetic resonance imaging (MRI)) of the orbits and cranium between 2012 and 2022 were included, totalling 57 patients (27 females and 30 males; 57 eyes; mean age 69 ± 10 years). 57 age- and gender matched subjects without known optic nerve diseases who underwent MRI of the orbits and cranium served as controls.

View Article and Find Full Text PDF

Perception, a cognitive construct, emerges through sensorimotor integration (SMI). The genetic mechanisms that shape SMI required for perception are unknown. Here, we demonstrate in mice that expression of the autism/intellectual disability gene, Syngap1, in cortical excitatory neurons is required for the formation of somatomotor networks that promote SMI-mediated perception.

View Article and Find Full Text PDF

Climate change is affecting population growth rates of ectothermic pests with potentially dire consequences for agriculture and global food security. However, current projection models of pest impact typically overlook the potential for rapid genetic adaptation, making current forecasts uncertain. Here, we predict how climate change adaptation in life-history traits of insect pests affects their growth rates and impact on agricultural yields by unifying thermodynamics with classic theory on resource acquisition and allocation trade-offs between foraging, reproduction, and maintenance.

View Article and Find Full Text PDF

Background: Support for the treatment of uncomplicated appendicitis with non-operative management rather than surgery has been increasing in the literature. We aimed to investigate whether treatment of uncomplicated appendicitis with antibiotics in children is inferior to appendicectomy by comparing failure rates for the two treatments.

Methods: In this pragmatic, multicentre, parallel-group, unmasked, randomised, non-inferiority trial, children aged 5-16 years with suspected non-perforated appendicitis (based on clinical diagnosis with or without radiological diagnosis) were recruited from 11 children's hospitals in Canada, the USA, Finland, Sweden, and Singapore.

View Article and Find Full Text PDF

Type 2 diabetes (T2D) is a progressive metabolic disorder that could be an underlying cause of long-term complications that increase mortality. The assessment of the probability of such events could be essential for mortality risk management. This work aimed to establish a framework for risk predictions of macrovascular complications (MVC) and diabetic kidney disease (DKD) in patients with T2D, using real-world data from the Swedish National Diabetes Registry (NDR), in the presence of mortality as a competing risk.

View Article and Find Full Text PDF

Enduring loneliness has serious physical and mental health implications. Patients with mental health problems are at risk of experiencing problems related to loneliness. Therefore, it is important to increase knowledge about how loneliness is experienced and managed in this particular group.

View Article and Find Full Text PDF

Background: Gastrin releasing peptide receptor (GRPR)-directed radiopharmaceuticals for targeted radionuclide therapy may be a very promising addition in prostate and breast cancer patient management. Aiming to provide a GRPR-targeting theranostic pair, we have utilized the Tc-99m/Re-188 radiometal pair, in combination with two bombesin based antagonists, maSSS-PEG2-RM26 and maSES-PEG2-RM26. The two main aims of the current study were (i) to elucidate the influence of the radiometal-exchange on the biodistribution profile of the two peptides and (ii) to evaluate the feasibility of using the [Tc]Tc labeled counterparts for the dosimetry estimation for the [Re]Re-labeled conjugates.

View Article and Find Full Text PDF

Recent developments in mass spectrometry-based proteomics have established it as a robust tool for system-wide analyses essential for pathophysiological research. While post-mortem samples are a critical source for these studies, our understanding of how body decomposition influences the proteome remains limited. Here, we have revisited published data and conducted a clinically relevant time-course experiment in mice, revealing organ-specific proteome regulation after death, with only a fraction of these changes linked to protein autolysis.

View Article and Find Full Text PDF

Spin transport properties in a topological insulator sandwiched between two-dimensional magnetic layers.

Sci Rep

January 2025

Department of Applied Physics, School of Engineering Sciences, KTH Royal Institute of Technology, AlbaNova University Center, SE-10691, Stockholm, Sweden.

Non-trivial band topology along with magnetism leads to different novel quantum phases. When time-reversal symmetry is broken in three-dimensional topological insulators (TIs) through, e.g.

View Article and Find Full Text PDF

Anti-correlation of LacI association and dissociation rates observed in living cells.

Nat Commun

January 2025

Science for Life Laboratory, Department of Cell and Molecular Biology, Uppsala University, Uppsala, Sweden.

The rate at which transcription factors (TFs) bind their cognate sites has long been assumed to be limited by diffusion, and thus independent of binding site sequence. Here, we systematically test this assumption using cell-to-cell variability in gene expression as a window into the in vivo association and dissociation kinetics of the model transcription factor LacI. Using a stochastic model of the relationship between gene expression variability and binding kinetics, we performed single-cell gene expression measurements to infer association and dissociation rates for a set of 35 different LacI binding sites.

View Article and Find Full Text PDF

Clinical mastitis, a prevalent production disease in the dairy industry, causes significant pain and swelling in dairy cows' udders. While previous research highlights a symbiotic relationship between humans and animals, particularly in terms of health, this study investigates how animal health, specifically clinical mastitis, influences farmers' well-being. Acknowledging farmers' pivotal role in mitigating animal health problems, we examined the human-animal relationship by exploring how dairy cow health relates to the psychological well-being of dairy farmers.

View Article and Find Full Text PDF

In recent years, oxidoreductase enzymes such as laccases have received considerable attention for their ability to degrade and eliminate organic micropollutants from contaminated water in a process known as enzyme-based wastewater treatment. Thus, methods to produce high laccase activity in water are a point of focus, with white-rot fungi being highlighted as a tool in this context. This study, therefore, explored the applied approach of direct addition of mushroom spawn of the white-rot fungi Pleurotus ostreatus into water and its potential for laccase production under different conditions.

View Article and Find Full Text PDF

Implications of a new clinical classification of acute myocardial infarction.

Eur Heart J Acute Cardiovasc Care

January 2025

BHF/University Centre for Cardiovascular Science, University of Edinburgh, Edinburgh, UK.

Aim: The diagnostic criteria for type 2 myocardial infarction identify a heterogenous group of patients with variable outcomes and no clear treatment implications. We aimed to determine the implications of a new clinical classification for myocardial infarction with more objective diagnostic criteria using cardiac imaging.

Methods: In a prospective cohort study, patients with type 2 myocardial infarction underwent coronary angiography and cardiac magnetic resonance imaging or echocardiography.

View Article and Find Full Text PDF

Critical Insights into LEAP2 Biology and Physiological Functions: Potential Roles Beyond Ghrelin Antagonism.

Endocrinology

January 2025

Grupo de Neurofisiología- Instituto Multidisciplinario de Biología Celular (IMBICE) (Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad de La Plata, Comisión de Investigaciones Científicas de la Provincia de Buenos Aires), La Plata, Argentina.

Liver-expressed antimicrobial peptide 2 (LEAP2) has recently emerged as a novel hormone that reduces food intake and glycemia by acting through the growth hormone secretagogue receptor (GHSR), also known as the ghrelin receptor. This discovery has led to a fundamental reconceptualization of GHSR's functional dynamics, now understood to be under a dual and opposing regulation. LEAP2 exhibits several distinctive features.

View Article and Find Full Text PDF

Protocol for in vivo immune cell analysis in subcutaneous murine tumor models using advanced flow cytometry.

STAR Protoc

January 2025

Department of Immunology, Genetics and Pathology, Uppsala University, 75185 Uppsala, Sweden; Department of Surgical Sciences, Uppsala University, 75185 Uppsala, Sweden. Electronic address:

Here, we present a protocol for guiding tissue preparation and flow cytometric analysis in subcutaneous murine tumor models and secondary lymphoid organs. We describe steps for dissociating tumors, spleens, and lymph nodes to obtain single-cell suspensions. We then detail procedures for immune cell staining and analysis and gating strategies including the use of fluorescence-minus-one controls (FMOs).

View Article and Find Full Text PDF

Familial Platelet Disorder with associated Myeloid Malignancy (FPDMM, FPD/AML, -FPD), caused by monoallelic deleterious germline variants, is characterized by bleeding diathesis and predisposition for hematologic malignancies, particularly myelodysplastic syndrome (MDS) and acute myeloid leukemia (AML). Clinical data on FPDMM-associated AML (FPDMM-AML) are limited, complicating evidence-based clinical decision-making. Here, we present retrospective genetic and clinical data of the largest cohort of FPDMM patients reported to date.

View Article and Find Full Text PDF

Infants at elevated likelihood for or later diagnosed with autism typically have smaller vocabularies than their peers, as shown by the Mullen Scales of Early Learning (MSEL) and the MacArthur-Bates Communicative Developmental Inventory (CDI). However, the extent to which MSEL and CDI scores align remains unclear, especially across clinical and non-clinical populations. This study examined whether the concurrent validity of the MSEL and CDI differs based on autism likelihood and diagnosis.

View Article and Find Full Text PDF

Background: Recent decades have witnessed tangible improvements in childhood cancer survival. However, the prognosis for children with congenital heart disease (CHD), the most prevalent birth defect, remains unclear. Due to improved survival of CHD and childhood cancer, evaluating outcomes within this intersection is important for clinical practice.

View Article and Find Full Text PDF