52 results match your criteria: "Biosciences School[Affiliation]"

Introduction: Knee pain increases the risk of developing chronic widespread pain (CWP) and knee osteoarthritis (KOA). The prevalence of CWP and KOA has increased, and there is a need for early prevention. Therefore, the aim was to examine the associations of health-related quality of life (HRQoL) and lifestyle habits with chronic pain at a two-year follow-up in individuals with knee pain.

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Mycobacteria Treatment Inhibits Bladder Cancer Cell Migration, Invasion, and Anchorage-Independent Growth.

Int J Mol Sci

December 2024

Microbiology Unit, Department of Genetics and Microbiology, Biosciences School, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain.

Bladder cancer (BC) is a highly recurrent and invasive malignancy, with BCG serving as the primary immunotherapy, particularly for non-muscle-invasive bladder cancer (NMIBC). However, the mechanisms underlying BCG's antitumor effects and the potential of non-tuberculous mycobacteria like remain unclear. This study investigates the antitumor effects of BCG and on BC cell migration, invasion, and anchorage-independent growth.

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Biological control agents (BCAs) are beneficial living organisms used in plant protection to control pathogens sustainably. Lactic acid bacteria (LAB) have gained attention in biopesticides due to their safety as recognized by the Food and Drug Administration. These bacteria possess antifungal properties, demonstrating inhibitory effects through nutrient competition or the production of antimicrobial metabolites.

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Article Synopsis
  • Between 2022 and 2023, researchers discovered ascaridoid nematodes of the genus Hexametra in two captive central bearded dragons in Spain, using both morphological and molecular methods for identification.
  • The identified nematode, Hexametra angusticaecoides, was characterized through advanced microscopy techniques and genetic sequencing of two rRNA regions and a mitochondrial gene.
  • This study is significant as it marks the first report of H. angusticaecoides infecting bearded dragons and also provides the first formal record of the species in Spain, highlighting the species' extended host range.
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  • * It compared 40 PWH divided into two age groups (40-45 and ≥60 years) with 30 HIV-negative controls matched by sex and age.
  • * Results indicate that older PWH had more health issues and higher CD8 T cell counts, while younger PWH showed signs of accelerated immune aging and higher inflammatory markers, suggesting a need for early medical interventions.
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Article Synopsis
  • Recent advances in single-cell RNA-sequencing (scRNA-seq) allow researchers to explore biological phenomena at the individual cell level.
  • Using droplets that mix cells from different individuals, scientists can determine which cell came from whom by identifying genetic differences.
  • A new tool called Demuxafy enhances this process by effectively distinguishing single cells from doubles (which contain multiple cells), improving the accuracy of assigning cells to their respective donors.
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Objectives: The aim was to study the development of radiographic knee osteoarthritis (RKOA) in individuals with knee pain over 2 years, and the associations between radiographic changes and baseline variables.

Design: Longitudinal cohort study.

Participants And Setting: This study is part of the Halland Osteoarthritis cohort.

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Background: Low health literacy is associated with worse pain and poorer self-management. This study (1) examined the level of health literacy and associations with lifestyle habits, health status, chronic pain, and radiographic knee osteoarthritis; and (2) explored experiences illuminating health literacy among individuals with knee pain.

Methods: A convergent parallel mixed-methods design was used, including 221 individuals.

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Amino acid substitutions in the kinase domain of the human CSF1R gene are associated with autosomal dominant adult-onset leukoencephalopathy with axonal spheroids and pigmented glia (ALSP). To model the human disease, we created a disease-associated mutation (pGlu631Lys; E631K) in the mouse Csf1r locus. Homozygous mutation (Csf1rE631K/E631K) phenocopied the Csf1r knockout, with prenatal mortality or severe postnatal growth retardation and hydrocephalus.

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Fluorescent proteins (FPs) are commonly used in pairs to monitor dynamic biomolecular events through changes in proximity via distance dependent processes such as Förster resonance energy transfer (FRET). The impact of FP association is assessed by predicting dimerization sites in silico and stabilizing the dimers by bio-orthogonal covalent linkages. In each tested case dimerization changes inherent fluorescence, including FRET.

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Synapse loss is an early event in late-onset Alzheimer's disease (LOAD). In this study, we have assessed the capacity of a polygenic risk score (PRS) restricted to synapse-encoding loci to predict LOAD. We used summary statistics from the International Genetics of Alzheimer's Project genome-wide association meta-analysis of 74,046 patients for model construction and tested the "synaptic PRS" in 2 independent data sets of controls and pathologically confirmed LOAD.

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Design of antimicrobial and cytolytic peptides by computational analysis of bacterial, algal, and invertebrate proteomes.

Amino Acids

October 2020

Present address: Sciences Faculty, Biosciences School, Functional Biology Research Group, Universidad Nacional de Colombia - Sede Medellín, Carrera 65 Nro. 59A - 110, Medellín, 050034, Colombia.

The increase of antibiotic resistance in bacterial species has raised the need to search for novel antimicrobial molecules. Antimicrobial peptides are molecules that commonly display an amphipathic character. In this work, we developed a computational strategy to search for new peptide sequences within the proteome of any organism that includes in-house developed software and the use of artificial intelligence tools available online.

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Recent large-scale projects in other disciplines have shown that results often fail to replicate when studies are repeated. The conditions contributing to this problem are also present in ecology, but there have not been any equivalent replication projects. Here, we survey ecologists' understanding of and opinions about replication studies.

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Eleven grand challenges in single-cell data science.

Genome Biol

February 2020

Life Sciences and Health, Centrum Wiskunde & Informatica, Amsterdam, The Netherlands.

Article Synopsis
  • Advances in microfluidics and low sequencing costs have revolutionized single-cell sequencing technology, allowing for the analysis of thousands to millions of cells in one experiment.
  • This rapid data generation presents unique challenges in data science, which the text identifies as central to the future of single-cell biology.
  • The article provides an overview of eleven key challenges, including motivating research questions and open problems, making it relevant for both experienced researchers and newcomers to the field.
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Current trends and challenges in cancer management and therapy using designer nanomaterials.

Nano Converg

July 2019

Nano-Bio Interfacial Research Laboratory (NBIRL), Department of Biotechnology, Siddaganga Institute of Technology, Tumkur, Karnataka, 572103, India.

Nanotechnology has the potential to circumvent several drawbacks of conventional therapeutic formulations. In fact, significant strides have been made towards the application of engineered nanomaterials for the treatment of cancer with high specificity, sensitivity and efficacy. Tailor-made nanomaterials functionalized with specific ligands can target cancer cells in a predictable manner and deliver encapsulated payloads effectively.

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Patients with type-2 diabetes mellitus (T2DM) have exaggerated sympathetic activity and blood pressure responses to exercise. However, the underlying mechanisms for these responses, as well as how these responses change throughout disease progression, are not completely understood. For this study, we examined the effect of the progression of T2DM on the exercise pressor reflex, a critical neurocardiovascular mechanism that functions to increase sympathetic activity and blood pressure during exercise.

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N-methyl-d-aspartate receptors (NMDAR) are widely expressed in the brain. GluN2B subunit-containing NMDARs has recently attracted significant attention as potential pharmacological targets, with emphasis on the functional properties of allosteric antagonists. We used primary cultures from chicken embryo forebrain (E10), expressing native GluN2B-containing NMDA receptors as a novel model system.

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Recent studies have shown that the cytochrome P450 (CYP) 3A phenotype marker 4β-hydroxycholesterol/cholesterol (4βOHC/C) ratio is negatively correlated with body weight in healthy volunteers, and that obese patients have lower 4βOHC levels than healthy controls. However, 4βOHC/C ratio in underweight patients has yet to be reported. The aim of this study was to examine potential differences in CYP3A activity between underweight patients with anorexia nervosa and normal-weight volunteers by measuring plasma 4βOHC/C ratio.

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The effect of the addition of sequential C-terminal tryptophan residues on the fluorescence intensity of GFP was investigated. Tandem repeats of six tryptophan residues markedly decreased fluorescence intensity. This phenomenon is likely to occur because of the inhibition of GFP folding, resulting in insolubility.

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Article Synopsis
  • - The study explored how oral yeast colonization in Sjögren's syndrome patients relates to factors like salivary flow rates, age, and disease progression, using saliva and swab samples from 45 participants, including healthy controls.
  • - Researchers discovered 11 yeast species, primarily finding that Candida albicans was most common among Sjögren's syndrome patients, who had higher counts of it compared to controls, while controls showed a wider variety of yeast species.
  • - The findings indicated that while Candida albicans is the most prevalent yeast in Sjögren's syndrome patients, the research highlighted the presence of various other yeast species, and it noted challenges in identifying most colonies using the culture-PCR methods combined.
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Detection of Impaired DNA Replication and Repair in Micronuclei as Indicators of Genomic Instability and Chromothripsis.

Methods Mol Biol

February 2019

Cell Biology Unit, Department of Cell Biology, Physiology and Immunology, Biosciences School, Universitat Autònoma de Barcelona, Bellaterra, Spain.

The physical isolation of chromosomes within micronuclei offers an attractive mechanistic explanation for the local DNA fragmentation and clustered genome rearrangements that characterize chromothripsis. Localized shattering of the chromatin confined in micronuclei can be a consequence of defects in micronuclei basic general functions, such as DNA replication and repair. The detection of DNA repair and replication defects in micronuclei is described here, as well as the analysis of chromosome breakage and inaccurate reassembly of broken segments in the daughter cells, as indirect methods to detect chromothripsis.

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Emotional responses, such as fear and anxiety, are fundamentally important behavioral phenomena with strong fitness components in most animal species. Anxiety-related disorders continue to represent a major unmet medical need in our society, mostly because we still do not fully understand the mechanisms of these diseases. Animal models may speed up discovery of these mechanisms.

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Neohormones in milk.

Best Pract Res Clin Endocrinol Metab

August 2017

School of Biosciences, University of Nottingham, UK. Electronic address:

Neohormone systems evolved specifically to regulate those mammalian traits, such as internal fertilization, pregnancy and lactation, which have proved to be central to the success, environmental independence, and adaptability of mammals as a vertebrate group. Neohormones such as oxytocin or relaxin are not only involved in the regulation of mammary gland development and function, but are also significant components of milk itself. Particularly for the latter hormone, it has been shown for the pig that relaxin in the first milk is taken up by the gastrointestinal tract of the offspring, enters the neonatal circulation and can have specific physiological and epigenetic effects on target organs such as the female reproductive system.

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Background: Townes-Brocks syndrome (TBS) is a rare autosomal dominant condition characterized by renal, anal, limb, and auditory abnormalities. TBS diagnosis can be challenging in settings where genetic analysis is not readily available. TBS traits overlap with those of Goldenhar and VACTERL syndromes.

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Similar to organophosphate (OP) nerve agents, diisopropylfluorophosphate (DFP) rapidly and irreversibly inhibits acetylcholinesterase, leading to convulsions that can progress to status epilepticus (SE). However, in contrast to the OP nerve agents, the long-term consequences of DFP-induced SE are not well known. Thus, we characterized the spatiotemporal profile of neuropathology during the first 2 months following acute DFP intoxication.

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