1,606 results match your criteria: "Leeds Institute of Medical Research[Affiliation]"

Non-medicinal oral contrast in upper abdominal MRI for MR-guided radiotherapy: A scoping review.

Radiography (Lond)

January 2025

Radiotherapy, Leeds Cancer Centre, Leeds Teaching Hospitals NHS Trust, UK; Leeds Institute of Medical Research, University of Leeds, Leeds, UK; NIHR Leeds Biomedical Research Centre, Leeds, UK.

Introduction: Using non-medicinal oral contrast agents may aid safe delivery of magnetic resonance image-guided (MR-guided) radiotherapy by improving the ability to visualise and avoid excessive radiation dose to adjacent bowel/stomach. This scoping review aims to map the literature on non-medicinal oral contrasts used in upper-abdominal diagnostic or therapeutic magnetic resonance imaging (MRI) to find potential candidates for employing in MR-guided radiotherapy and identify gaps in knowledge for further study.

Methods: A scoping review of non-medicinal oral contrast used in upper-abdominal MRI research followed a pre-defined protocol based on Arksey and O'Malley's framework.

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Background: Low-dose amitriptyline, a tricyclic antidepressant (TCA), was superior to placebo for irritable bowel syndrome (IBS) in the AmitripTyline at Low-dose ANd Titrated for Irritable bowel syndrome as Second-line treatment (ATLANTIS) trial.

Objective: To perform post hoc analyses of ATLANTIS for predictors of response to, and tolerability of, a TCA.

Design: ATLANTIS randomised 463 adults with IBS to amitriptyline (232) or placebo (231).

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Incidence and survival of European adolescents and young adults diagnosed with sarcomas: EUROCARE-6 results.

Eur J Cancer

January 2025

Department of Medical Oncology, Fondazione IRCCS Istituto Nazionale dei Tumori, Milan, Italy.

Background: Epidemiological data for sarcoma in adolescents and young adults (AYAs) and across age groups are limited. We aim to: 1) update sarcoma incidence, survival, and changes over time in European AYAs; 2) provide an updated comparison of sarcoma survival in AYAs versus children and mature adults.

Methods: We calculated crude incidence rates (IR) per 100,000 European population per year from 2006 to 2013.

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Purpose: To systematically review qualitative studies on outcomes, needs, experiences, preferences, concerns and health-related quality of life (HRQoL) of people surviving cancer in Europe in the last decade.

Methods: Protocol registered ( https://www.crd.

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This article outlines recent developments in non-allergist delivered penicillin allergy de-labelling (PADL), discusses remaining controversies and uncertainties and explores the future for non-allergist delivered PADL. Recent developments include national guidelines for non-allergist delivered PADL and validation of penicillin allergy risk assessment tools. Controversies remain on which penicillin allergy features are low risk of genuine allergy.

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Intra-patient comparison of microarchitecture of tumour negative lymph nodes from oesophageal cancer patients - Results from the MRC Oe02 trial.

Pathol Res Pract

January 2025

Department of Pathology, GROW - Research Institute for Oncology and Reproduction, Maastricht University Medical Center+, Maastricht, the Netherlands; Pathology and Data Analytics, Leeds Institute of Medical Research at St. James's, University of Leeds, Leeds, United Kingdom. Electronic address:

Background: Regional lymph node (LN) status is a key prognostic factor in oesophageal cancer (OeC). Tumour-derived antigens can activate immune reactions in LNs, potentially reflecting the host's anti-tumour immune response. It remains unclear whether this response is homogeneous across all tumour negative LNs (LNneg) within individual OeC patients.

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Background: Antimicrobial resistance (AMR) is caused by the use and misuse of antibiotics. AMR is a global health concern, to which penicillin allergy (penA) labels appear to contribute. Patients who have penA labels are treated with non-penicillin antibiotics and receive more antibiotics when compared with patients without penA.

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Introduction: Irritable bowel syndrome (IBS) is a disorder of gut-brain interaction affecting 5% of the population. The cardinal symptoms are abdominal pain and altered stool form or frequency.

Areas Covered: Diagnosis and management of IBS.

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The study aim was to evaluate whether reducing bed position acquisition time would result in significant detriment to image quality. Secondary aims were to compare effect of time of flight (TOF) and Q.Clear reconstructions and patient BMI on image quality.

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Background: Guidelines suggest treating fully penicillin-susceptible Enterococcus faecalis strains causing infective endocarditis with amoxicillin combined with gentamicin or ceftriaxone, but clinical evidence to support this practice is limited and monotherapy cohorts were excluded from studies. We describe antibiotic treatment, complications, and outcomes in patients with Enterococcus faecalis infective endocarditis, specifically comparing monotherapy versus combination therapy.

Methods: Retrospective analysis of prospectively collected cohort of patients with definite or possible infective endocarditis from 2 English centres between 2006 and 2021.

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The U4 small nuclear RNA (snRNA) forms a duplex with the U6 snRNA and, together with U5 and ~30 proteins, is part of the U4/U6.U5 tri-snRNP complex, located at the core of the major spliceosome. Recently, recurrent variants in the U4 RNA, transcribed from the gene, and in at least two other genes were discovered to cause neurodevelopmental disorder.

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Purpose: Radiotherapy (RT) for oropharyngeal cancer (OPC) can lead to late toxicity. Fatigue is a known debilitating issue for many cancer survivors, yet prevalence and severity of long-term fatigue in patients treated for OPC is unknown.

Method: As part of a mixed-methods study, fatigue in OPC patients ≥ 2 years post RT + / - chemotherapy was evaluated.

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Background & Aims: Screening for, and treating, Helicobacter pylori (H. pylori) in the general population or patients with early gastric neoplasia could reduce incidence of, and mortality from, gastric cancer. We updated a meta-analysis of randomized controlled trials (RCTs) examining this issue.

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Longer term follow-up of abdominal symptoms (CFAbd-Score) after initiation of Elexacaftor / Tezacaftor / Ivacaftor in adults with cystic fibrosis.

J Cyst Fibros

January 2025

Leeds Institute of Medical Research, University of Leeds, School of Medicine, Leeds, United Kingdom; The Leeds Adult CF Unit, Leeds Teaching Hospitals NHS Trust, Leeds, United Kingdom. Electronic address:

Background: Whether improvements in gastrointestinal (GI) symptoms observed with Elexacaftor/Tezacaftor/Ivacaftor (ETI) treatment are sustained in the longer-term requires exploration. This study investigated how GI-symptoms change with longer-term ETI use in pancreatic insufficient adults with cystic fibrosis (awCF).

Methods: Participants completed up to three abdominal symptom questionnaires, employing the validated CFAbd-Score.

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Introduction: Despite the emergence of drugs to treat irritable bowel syndrome (IBS), improving abdominal pain can still be challenging. αδ ligands, such as gabapentin and pregabalin, are sometimes used off-label to tackle this problem. However, evidence for efficacy is limited, and no large-scale studies have been published.

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Aims: Establishment of a protocol for routine single-molecule localisation microscopy (SMLM) imaging on formalin fixed paraffin embedded (FFPE) tissue using medical renal disease including minimal change disease (MCD) and focal segmental glomerulosclerosis (FSGS).

Methods: Protocol for normal and diseased renal FFPE tissue was developed to investigate the clinical diagnostic potential of SMLM. Antibody concentrations were determined for confocal microscopy and transferred to SMLM.

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Background: The FOxTROT trial has reported advantages of neoadjuvant chemotherapy (NAC) in locally advanced colon cancer (LACC). Here we present results of the embedded randomized phase II trial testing the addition of panitumumab to neoadjuvant FOLFOX compared with FOLFOX alone in RAS and BRAF-wild-type patients and with biomarker hyperselction.

Patients And Methods: Patients had operable, CT-predicted stage T3-4, N0-2, M0 colon adenocarcinoma.

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The case for reducing the use of diagnostic upper and lower gastrointestinal endoscopy.

Lancet Gastroenterol Hepatol

January 2025

Leeds Gastroenterology Institute, St James's University Hospital, Leeds LS9 7TF, UK; Leeds Institute of Medical Research at St James's, University of Leeds, Leeds, UK. Electronic address:

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Objective: Studies in the USA examining the relationship between ethnicity and colorectal cancer (CRC) identified significant variation. This study sought to examine the relationship between ethnic group, route to diagnosis, early-onset CRC and stage at diagnosis in the English National Health Service.

Methods: Data from COloRECTal cancer data Repository for all individuals diagnosed with CRC (International Classification of Diseases version 10, C18-C20) between 2012 and 2017.

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According to the 2021 World Health Organization classification of CNS tumors, gliomas harboring a mutation in isocitrate dehydrogenase (mIDH) are considered a distinct disease entity, typically presenting in adult patients before the age of 50 years. Given their multiyear survival, patients with mIDH glioma are affected by tumor and treatment-related symptoms that can have a large impact on the daily life of both patients and their caregivers for an extended period of time. Selective oral inhibitors of mIDH enzymes have recently joined existing anticancer treatments, including resection, radiotherapy, and chemotherapy, as an additional targeted treatment modality.

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Threonine and tyrosine kinase (TTK) mRNA and protein expression in breast cancer; prognostic significance in the neoadjuvant setting.

Histopathology

January 2025

Division of Molecular Medicine, Leeds Institute of Medical Research, St James's University Hospital, University of Leeds, Leeds, UK.

Aims: Threonine and tyrosine kinase (TTK) is up-regulated in triple-negative breast cancer (TNBC), yet its expression in patients undergoing neoadjuvant chemotherapy (NACT) remains unexplored. This investigation aims to assess TTK protein expression in treatment-naïve pre-treatment cores and paired pre- and post-NACT breast cancer (BC) cohorts, as well as its correlation with microcephaly 1 (MCPH1) protein expression.

Methods And Results: Transcriptomic data were sourced from the Gene Expression Omnibus microarray database for mRNA expression analysis.

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Introduction: Anastomotic leak (AL) represents a significant complication following gastrointestinal (GI) surgery, contributing to increased morbidity and mortality. pH monitoring has emerged as a potential diagnostic tool for the early detection of AL, but its effectiveness and clinical utility remain to be fully elucidated. This review aims to summarise the evidence regarding perianastomotic pH monitoring for AL detection.

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Background: There has been limited success of cancer immunotherapies in the treatment of ovarian cancer (OvCa) to date, largely due to the immunosuppressive tumour microenvironment (TME). Tumour-associated macrophages (TAMs) are a major component of both the primary tumour and malignant ascites, promoting tumour growth, angiogenesis, metastasis, chemotherapy resistance and immunosuppression. Differential microRNA (miRNA) profiles have been implicated in the plasticity of TAMs.

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This joint practice guideline/procedure standard was collaboratively developed by the European Association of Nuclear Medicine (EANM), the Society of Nuclear Medicine and Molecular Imaging (SNMMI), the European Association of Neuro-Oncology (EANO), and the PET task force of the Response Assessment in Neurooncology Working Group (PET/RANO). Brain metastases are the most common malignant central nervous system (CNS) tumors. PET imaging with radiolabeled amino acids and to lesser extent [F]FDG has gained considerable importance in the assessment of brain metastases, especially for the differential diagnosis between recurrent metastases and treatment-related changes which remains a limitation using conventional MRI.

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