4,629 results match your criteria: "University of portsmouth.[Affiliation]"

Continual challenges due to microbial corrosion are faced by the maritime, offshore renewable and energy sectors. Understanding the biofilm and microbiologically influenced corrosion interaction is hindered by the lack of robust and reproducible physical models that reflect operating environments. A novel dual anaerobic biofilm reactor, using a complex microbial consortium sampled from marine littoral sediment, allowed the electrochemical performance of UNS G10180 carbon steel to be studied simultaneously in anaerobic abiotic and biotic artificial seawater.

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The effect of repeated hot water immersion on vascular function, blood pressure and central haemodynamics in individuals with type 2 diabetes mellitus.

J Therm Biol

December 2024

School of Psychology, Sport and Health Science, Faculty of Science and Health, University of Portsmouth, UK; Diabetes and Endocrinology Department, Portsmouth Hospitals University NHS Trust, Portsmouth, UK. Electronic address:

Article Synopsis
  • Type 2 diabetes mellitus (T2DM) can lead to problems with blood vessel function, increasing the risk of heart issues, and hot water immersion (HWI) might help improve this, though research is limited.
  • A study with 14 participants assessed the effects of 8-10 sessions of HWI, measuring various heart and blood vessel functions before and after the treatment.
  • Results showed significant reductions in cardiac index, stroke volume index, resting heart rate, and systolic blood pressure, suggesting HWI could benefit heart-related measures in T2DM, but it didn’t improve overall vascular function.
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Fabrication and comparison of interlaminar fracture toughness behaviour of glass epoxy composites with recycled milled Kevlar-carbon hybrid fillers.

Heliyon

October 2024

Portsmouth Centre for Advanced Materials and Manufacturing (PCAMM), School of Electrical and Mechanical Engineering, University of Portsmouth, PO1 3DJ, Hampshire, United Kingdom.

Current research uses a novel recycled milled carbon (rmCF), recycled milled Kevlar (rmKF), and innovative Hybrid fillers (rmHF) of both to increase glass/epoxy composite laminate delamination resistance. This study examines how crack propagation and fibre orientation affect laminated composite delamination fracture toughness. Recycled milled Fillers in the interlayer increase stiffness, delamination resistance, and fracture toughness by increasing the energy needed to crack the interlaminar domain.

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  • Glioblastoma (GBM) is the deadliest brain tumor in adults, and current therapies are largely ineffective, which drives the need for new treatment strategies based on the tumor's metabolic needs, specifically glucose and glutamine.
  • A ketogenic metabolic therapy (KMT) approach targets these metabolic pathways by combining dietary changes with specific drugs to limit glycolysis and glutaminolysis, while promoting the use of non-fermentable fuels like ketones and fatty acids.
  • The glucose-ketone index (GKI) serves as a biomarker to monitor treatment effectiveness, aiming to create a more hostile environment for tumor growth and improve outcomes in GBM as well as potentially other cancer types reliant on similar metabolic pathways.
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  • * The study investigated how cognitive load affects interviewers' memory and ability to track the source of information when recalling details from multiple witnesses.
  • * Results showed that under high cognitive load, interviewers' memory accuracy decreased compared to those under no cognitive load, but overall, source monitoring accuracy remained poor regardless of cognitive load condition.
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Semaphorin 3A repulsion directs the caudal projection of pioneer longitudinal axons in the developing chicken brain.

Dev Biol

February 2025

School of the Environment and Life Sciences, Institute of Life Sciences and Healthcare, University of Portsmouth, Portsmouth, UK. Electronic address:

The medial longitudinal fasciculus (MLF) is the first axon tract to develop in the ventral vertebrate brain. It originates in the diencephalon and projects caudally into the spinal cord, pioneering the path for later developing axons. Previous anatomical and expression analyses in the chicken suggested Semaphorin 3 A (Sema3A) as the candidate to repel the amniote MLF from the forebrain.

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Public perceptions of nature-based coastal solutions in the UK.

J Environ Manage

January 2025

School of Energy, Construction and Environment, Coventry University, United Kingdom.

Coastal scientists are increasingly advocating for nature-based coastal solutions (NBCS) to ensure long-term coastal sustainability. Implementing NBCS will change coastal landscapes, necessitating consultation with the wider public as such changes directly affect the socio-cultural values of coastal zone residents and users. We, therefore, investigate public willingness to support, preferences for, and perceived effectiveness of coastal management solutions, nature-based and otherwise, focusing on the UK as a case study.

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The immunosuppressive tumor microenvironment (TME) plays a pivotal role in the response to various anticancer therapies, such as immune and chemotherapeutic agents. In this study, the synergistic effects of gene-targeting HIF-1α siRNA combined with Toll-Like Receptor 7 agonist on TME remodeling were investigated in a mouse model of colorectal cancer (CRC). A HIF-1α-specific siRNA duplex was formulated based on the ionic gelation of tripolyphosphate (TPP) with cationic chitosan (CH) as a nanoplex and evaluated in terms of size, charge, polydispersity index and gel retardation assay.

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  • Nigeria is responsible for 31% of global malaria deaths, highlighting the need for effective prevention knowledge among women, particularly those of reproductive age (15-49 years).
  • A study analyzing data from the 2021 Nigeria Malaria Indicator Survey found that 43.5% of women had good knowledge of malaria prevention, influenced by education level, exposure to malaria messages, and household economic status.
  • Women with secondary education or higher were significantly more knowledgeable, as were those exposed to malaria messages, while rural women and those from poor households demonstrated lower levels of knowledge compared to their urban and wealthier counterparts.
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  • The IMDC score is crucial for predicting outcomes and guiding treatment in patients with metastatic renal cell carcinoma (mRCC), especially when starting therapy with nivolumab.
  • A multicenter study analyzed 492 mRCC patients to see how changes in IMDC categories affected their overall survival (OS) and progression-free survival (PFS) after starting nivolumab.
  • Results indicated that patients maintaining or improving their IMDC category had better survival outcomes compared to those whose condition worsened, highlighting the importance of IMDC monitoring in mRCC treatment.
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Scientific advances are historically linked to colonial actions of past empires resulting in knowledge production biased towards the West with minimal representation of scholars of other ethnicities than White in science curricula in Higher Education (HE). Calls to decolonise science curricula seek to diversify content by acknowledging the role of racism and privilege in the history of science, aiming at creating a HE that is less isolating for minoritised ethnicities and feels welcoming to students of all identities. This case study explored science teaching staff's familiarity with and misconceptions of decolonisation at a UK HE institution using an online questionnaire.

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The long non-coding RNA (lncRNA), HAR1A is emerging as a putative tumour suppressor. In non-neoplastic brain cells, REST suppresses HAR1A expression. In gliomas REST acts as an oncogene and is a potential therapeutic target.

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Resistance to current antimalarial drugs is steadily increasing, and new drugs are required. Drug efficacy trials remain the gold standard to assess the effectiveness of a given drug. The World Health Organization (WHO)'s recommendation for the optimal duration of follow-up for assessing antimalarial efficacy is a minimum of 28 days.

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White-rot fungi (WRF) are the most efficient lignin-degrading organisms in nature. However, their capacity to use lignin-related aromatic compounds, such as 4-hydroxybenzoate, as carbon sources has only been described recently. Previously, the hydroxyquinol pathway was proposed for the bioconversion of these compounds in fungi, but gene- and structure-function relationships of the full enzymatic pathway remain uncharacterized in any single fungal species.

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Primates, the most colorful mammalian radiation, have previously served as an interesting model to test the functions and evolutionary drivers of variation in eye color. We assess the contribution of photo-regulatory and communicative functions to the external eye appearance of nine macaque species representing all the branches of their radiation. Macaques' well described social structure and wide geographical distribution make them interesting to explore.

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Background: While total mesorectal excision is the gold standard for rectal cancer, the optimal surgical approach to achieve adequate oncological outcomes remains controversial. This network meta-analysis aims to compare the histopathological outcomes of robotic (R-RR), transanal (Ta-RR), laparoscopic (L-RR), and open (O-RR) resections for rectal cancer.

Materials And Methods: MEDLINE, Embase, and the Cochrane Library were screened from inception to June 2024.

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The Parkinson's disease drug entacapone disrupts gut microbiome homoeostasis via iron sequestration.

Nat Microbiol

December 2024

Centre for Microbiology and Environmental Systems Science, Department of Microbiology and Ecosystem Science, University of Vienna, Vienna, Austria.

Many human-targeted drugs alter the gut microbiome, leading to implications for host health. However, the mechanisms underlying these effects are not well known. Here we combined quantitative microbiome profiling, long-read metagenomics, stable isotope probing and single-cell chemical imaging to investigate the impact of two widely prescribed drugs on the gut microbiome.

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Environmental enrichment reduces adgrl3.1-Related anxiety and attention deficits but not impulsivity.

Behav Brain Res

February 2025

School of Pharmacy and Biomedical Sciences, University of Portsmouth, UK; Surrey Sleep Research Centre, University of Surrey, Guildford, UK. Electronic address:

Article Synopsis
  • Environmental factors, particularly environmental enrichment (EE), influence the development and severity of neuropsychiatric disorders, especially externalizing disorders that involve impulsive and aggressive behaviors.
  • The study focused on zebrafish with a gene linked to impulsivity and attention deficits (adgrl3.1), showing that those raised in enriched environments exhibited reduced anxiety and improved attention but continued to display impulsive behaviors.
  • These results indicate that while EE can help alleviate some symptoms associated with externalizing and internalizing disorders, impulsivity is more resistant to environmental modifications.
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Development of a novel 'In-Water Mass Casualty Triage Tool'.

BMJ Mil Health

November 2024

Extreme Environments Laboratory, University of Portsmouth, Portsmouth, UK.

The number of in-water mass casualty incidents has increased in recent years and provides significant challenges to rescuers. Existing triage systems require the rescue of immersed (in water) casualties before triage is undertaken. A tool that enables triage to be undertaken rescue, and therefore the prioritisation of that rescue, should improve the efficiency, efficacy and survival rate associated with the management of such incidents.

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Background: This prospective two-center case series feasibility study aimed to investigate the potential of a novel maxillary protraction facemask customized to the patients' anatomy recorded with 3D face scanning and then produced by digital design and additive manufacturing.

Methods: Ten subjects (5 females and 5 males, average age 7.7±1.

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Socioeconomic inequalities in high-risk fertility behaviour among Nigerian women: A non-experimental population-based study.

PLoS One

November 2024

Faculty of Science and Health, School of Health and Care Professions, University of Portsmouth, Hampshire, United Kingdom.

Background: High-risk fertility behaviour (HRFB) has adverse health, social and economic effects on women. An understanding of socioeconomic inequalities is needed to design effective interventions targeted to lower maternal morbidity and mortality due to HRFB.

Objectives: The objective was to quantify socioeconomic inequalities in HRFB among Nigerian women.

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Sorption of metal ions onto PET-derived microplastic fibres.

Environ Sci Process Impacts

December 2024

School of Chemistry and Chemical Engineering, University of Surrey, Guildford, Surrey GU2 7XH, UK.

Article Synopsis
  • This study explored how microplastic polyester fibers, specifically polyethylene terephthalate (PET), can absorb various metal ions found in sewage.
  • The research found that PET fibers could effectively retain metal ions like lead, cadmium, and mercury, with lead showing the highest absorption capacity.
  • The findings suggest that when these microplastics are present in sewage treatment, they can contribute to the transfer of hazardous metals into the environment, particularly when sewage sludge is used on agricultural land.
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The English Performance Lifestyle (PL) service is a Career Assistance Program that aims to support British elite athletes in their holistic development throughout their time in elite sport to support their mental health and career prospects during and following their careers as athletes. Yet, despite the widespread existence and significant funding dedicated to this service, researchers have identified how it is often not fully embedded or used by sport organizations. Therefore, the aim of this study was to extend previous research by understanding the barriers to the provision of the PL service.

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Introduction: In the past 30 years, minimally invasive surgery (MIS) has made remarkable progress and has become the standard of care in colorectal cancer treatment. The implementation of new techniques or platforms is, therefore, a challenge for surgical teams. This study aims to analyze the experience in the implementation of minimally invasive surgery in the colorectal unit in a specialized colorectal cancer center.

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