4,255 results match your criteria: "S10 2TN; Sheffield Teaching Hospitals NHS Foundation Trust[Affiliation]"

Background: Rates of non-communicable diseases, including cardiovascular disease and type 2 diabetes, and mental health problems, such as anxiety and depression, are high and rising in the urbanising world. Gardening could improve both mental and physical health and help prevent a range of conditions by increasing fruit and vegetable (F&V) consumption, promoting physical activity, and reducing stress. However, good quality quantitative research in the area is scarce, and our understanding of the role of allotments and home gardens, and the effects of the level of engagement in gardening and involvement with food production has thus far been limited.

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R-β-homoserine (RBH) and β-aminobutyric acid (BABA) induce resistance against the oomycete () in Arabidopsis, which is based on priming of multiple defense layers, including early acting penetration resistance at the cell wall. Here, we have examined the molecular basis of RBH- and BABA-primed defense by cell wall papillae against . Three-dimensional reconstruction of -induced papillae by confocal microscopy revealed no structural differences between control-, RBH-, and BABA-treated plants after challenge.

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Denosumab is a monoclonal antibody used to reduce risk of fractures in osteoporosis. ROSALIA was a multicenter, double-blind, randomized, integrated phase I/phase III study comparing the efficacy, pharmacokinetics (PK), pharmacodynamics (PD), immunogenicity, and safety of proposed biosimilar denosumab GP2411 with reference denosumab (REF-DMAb) (Prolia®; Amgen). Postmenopausal women with osteoporosis were randomized 1:1 to 2 60-mg doses of GP2411 or REF-DMAb, one at study start and one at week 26.

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Dystroglycan is a ubiquitously expressed heterodimeric cell-surface laminin receptor with roles in cell adhesion, signalling, and membrane stabilisation. More recently, the transmembrane β-subunit of dystroglycan has been shown to localise to both the nuclear envelope and the nucleoplasm. This has led to the hypothesis that dystroglycan may have a structural role at the nuclear envelope analogous to its role at the plasma membrane.

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What can we learn about fish neutrophil and macrophage response to immune challenge from studies in zebrafish.

Fish Shellfish Immunol

May 2024

Laboratory of Experimental Fish Models, Department of Veterinary and Animal Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Frederiksberg C., Denmark. Electronic address:

Article Synopsis
  • - Fish, particularly zebrafish larvae, heavily depend on their innate immune system for protection against pathogens in their aquatic environment, especially during injury and normal life.
  • - Zebrafish are excellent research models for studying immunity because their immune system shares similarities with mammals and their transparent bodies allow for easy observation of immune cell functions.
  • - Recent discoveries suggest that leukocytes (like neutrophils and macrophages) in zebrafish have more complex roles than expected, being crucial for inflammation control, infection management, and effective wound healing.
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N-methyladenosine modification is not a general trait of viral RNA genomes.

Nat Commun

March 2024

Molecular Virology Group, Department of Medicine and Life Sciences, Universitat Pompeu Fabra, Dr. Aiguader 88, 08003, Barcelona, Spain.

Despite the nuclear localization of the mA machinery, the genomes of multiple exclusively-cytoplasmic RNA viruses, such as chikungunya (CHIKV) and dengue (DENV), are reported to be extensively mA-modified. However, these findings are mostly based on mA-Seq, an antibody-dependent technique with a high rate of false positives. Here, we address the presence of mA in CHIKV and DENV RNAs.

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Antimicrobial peptide AK as a gene delivery vector in cancer cells.

Eur J Pharm Biopharm

May 2024

Department of Chemical and Biological Engineering, University of Sheffield, Sheffield S1 3JD, UK; School of Pharmacy, Changzhou University, Changzhou 213164, China. Electronic address:

Designed peptides are promising biomaterials for biomedical applications. The amphiphilic cationic antimicrobial peptide (AMP), AK, can self-assemble into nano-rod structures and has shown cancer cell selectivity and could therefore be a promising candidate for therapeutic delivery into cancer cells. In this paper, we investigate the selectivity of AK for cancer cell models, examining its effect on two human cancer cell lines, A431 and HCT-116.

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Streptococcus pyogenes, commonly referred to as Group A Streptococcus (Strep A), causes a spectrum of diseases, with the potential to progress into life-threatening illnesses and autoimmune complications. The escalating threat of antimicrobial resistance, stemming from the prevalent reliance on antibiotic therapies to manage Strep A infections, underscores the critical need for the development of disease control strategies centred around vaccination. Phagocytes play a critical role in controlling Strep A infections, and phagocytosis-replicating assays are essential for vaccine development.

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Supervised learning-based image classification in computer vision relies on visual samples containing a large amount of labeled information. Considering that it is labor-intensive to collect and label images and construct datasets manually, Zero-Shot Learning (ZSL) achieves knowledge transfer from seen categories to unseen categories by mining auxiliary information, which reduces the dependence on labeled image samples and is one of the current research hotspots in computer vision. However, most ZSL methods fail to properly measure the relationships between classes, or do not consider the differences and similarities between classes at all.

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Deep-learning methods have revolutionized protein structure prediction and design but are presently limited to protein-only systems. We describe RoseTTAFold All-Atom (RFAA), which combines a residue-based representation of amino acids and DNA bases with an atomic representation of all other groups to model assemblies that contain proteins, nucleic acids, small molecules, metals, and covalent modifications, given their sequences and chemical structures. By fine-tuning on denoising tasks, we developed RFdiffusion All-Atom (RFdiffusionAA), which builds protein structures around small molecules.

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The pseudokinase TRIB3 controls adipocyte lipid homeostasis and proliferation in vitro and in vivo.

Mol Metab

December 2023

Center for Molecular Medicine, University Medical Center Utrecht, Utrecht University, 3C584 CG Utrecht, The Netherlands. Electronic address:

Article Synopsis
  • The study examines the role of the pseudokinase Tribbles 3 (TRIB3) in energy metabolism by using Trib3 knockout mice to understand its effects on fat cells and overall metabolic health.
  • Results show that while Trib3 mice are fatter, their insulin sensitivity doesn't change, and their fat cells are smaller with increased proliferation markers, suggesting TRIB3 affects how these cells grow and store fat.
  • Overall, TRIB3 is implicated in various cellular processes through different signaling pathways, indicating it plays a crucial role in maintaining the health of fat tissue rather than just one specific function.
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Telomere length is an epigenetic trait - Implications for the use of telomerase-deficient organisms to model human disease.

Dis Model Mech

March 2024

Institute for Research on Cancer and Aging of Nice (IRCAN), CNRS UMR7284, INSERM U1081, Université Côte d'Azur, 06107 Nice, France.

Telomere length, unlike most genetic traits, is epigenetic, in the sense that it is not fully coded by the genome. Telomeres vary in length and randomly assort to the progeny leaving some individuals with longer and others with shorter telomeres. Telomerase activity counteracts this by extending telomeres in the germline and during embryogenesis but sizeable variances remain in telomere length.

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Article Synopsis
  • Urbanization and climate change are exacerbating extreme heat events in cities, but urban green-blue-grey infrastructure (GBGI) like parks and wetlands can help cool summer temperatures.
  • A systematic review analyzed 202 studies on 51 types of GBGI, highlighting that while some (like green walls and street trees) are well-researched for cooling effects, others (like zoological gardens and private gardens) have been largely overlooked.
  • Future climate shifts may reduce the effectiveness of current GBGI, so it's important to consider multiple benefits and enhance planning for these infrastructures to maximize their cooling potential.
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Protein solubility and stability depend on the co-solutes present. There is little theoretical basis for selection of suitable co-solutes. Some guidance is provided by the Hofmeister series, an empirical ordering of anions according to their effect on solubility and stability; and by osmolytes, which are small organic molecules produced by cells to allow them to function in stressful environments.

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Axon diameter influences the conduction properties of myelinated axons, both directly, and indirectly through effects on myelin. However, we have limited understanding of mechanisms controlling axon diameter growth in the central nervous system, preventing systematic dissection of how manipulating diameter affects myelination and conduction along individual axons. Here we establish zebrafish to study axon diameter.

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The 313-variant polygenic risk score (PRS) provides a promising tool for breast cancer risk prediction. However, evaluation of the PRS across different European populations which could influence risk estimation has not been performed. Here, we explored the distribution of PRS across European populations using genotype data from 94,072 females without breast cancer, of European-ancestry from 21 countries participating in the Breast Cancer Association Consortium (BCAC) and 225,105 female participants from the UK Biobank.

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Pervasive mimicry in flight behavior among aposematic butterflies.

Proc Natl Acad Sci U S A

March 2024

Department of Biology, University of York, Heslington YO10 5DD, United Kingdom.

Article Synopsis
  • - Flight innovation in insects, particularly in neotropical heliconiine butterflies, is influenced by complex interactions between environmental and biological factors, complicating the understanding of its evolution.
  • - A study of 351 butterflies revealed that flight patterns, such as wing beat frequency and angles, vary by color pattern mimicry affiliations, suggesting different flight components face different evolutionary pressures.
  • - The findings indicate that predator-driven mimicry significantly influences flight characteristics and can lead to behavioral mimicry even between species that have diverged over tens of millions of years.
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Focus on epigenetics.

Plant Physiol

March 2024

Institute of Plant and Food Science, Department of Biology, School of Life Sciences, Southern University of Science and Technology, Shenzhen 518055, China.

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Parkinson's disease (PD) is the second most prevalent dementia in the world. Wearable technology has been useful in the computer-aided diagnosis and long-term monitoring of PD in recent years. The fundamental issue remains how to assess the severity of PD using wearable devices in an efficient and accurate manner.

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The origins of human pluripotent stem cells: the road from a cancer to regenerative medicine.

In Vitro Cell Dev Biol Anim

May 2024

The Centre for Stem Cell Biology, The School of Biosciences, The University of Sheffield, Western Bank, Sheffield, S10 2TN, UK.

The notion of using pluripotent stem cells (PSCs) as a source of differentiated cell types for replacement of disease or damaged tissues in regenerative medicine is now an active area of research, with approaches to treating eye diseases such as age-related macular degeneration or Parkinson's disease now on the horizon. But the foundations for this research lie in a quite different area of science, namely the role of genetics of cancer. In this review, we trace the evolution of ideas starting with the discovery that strain 129 mice are particularly subject to develop germ cell tumors, through the identification of embryonal carcinoma (EC) cells as the stem cells of the teratocarcinoma manifestation of these tumors, to the recognition of their relationship to pluripotent cells of the early embryo, and eventually their role in the derivation of embryonic stem cells, first from mouse embryos and then from primates including humans.

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C photosynthesis is a key innovation in land plant evolution, but its immediate effects on population demography are unclear. We explore the early impact of the C trait on the trajectories of C and non-C populations of the grass Alloteropsis semialata. We combine niche models projected into paleoclimate layers for the last 5 million years with demographic models based on genomic data.

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Forestation is widely proposed for carbon dioxide (CO) removal, but its impact on climate through changes to atmospheric composition and surface albedo remains relatively unexplored. We assessed these responses using two Earth system models by comparing a scenario with extensive global forest expansion in suitable regions to other plausible futures. We found that forestation increased aerosol scattering and the greenhouse gases methane and ozone following increased biogenic organic emissions.

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Terrestrial enhanced weathering (EW) of silicate rocks, such as crushed basalt, on farmlands is a promising scalable atmospheric carbon dioxide removal (CDR) strategy that urgently requires performance assessment with commercial farming practices. We report findings from a large-scale replicated EW field trial across a typical maize-soybean rotation on an experimental farm in the heart of the United Sates Corn Belt over 4 y (2016 to 2020). We show an average combined loss of major cations (Ca and Mg) from crushed basalt applied each fall over 4 y (50 t ha y) gave a conservative time-integrated cumulative CDR potential of 10.

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How Important Is Sexual Isolation to Speciation?

Cold Spring Harb Perspect Biol

April 2024

Centre for Biological Diversity, School of Biology University of St Andrews, St Andrews KY16 9ST, United Kingdom.

A central role for sexual isolation in the formation of new species and establishment of species boundaries has been noticed since Darwin and is frequently emphasized in the modern literature on speciation. However, an objective evaluation of when and how sexual isolation plays a role in speciation has been carried out in few taxa. We discuss three approaches for assessing the importance of sexual isolation relative to other reproductive barriers, including the relative evolutionary rate of sexual trait differentiation, the relative strength of sexual isolation in sympatry, and the role of sexual isolation in the long-term persistence of diverging forms.

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