Publications by authors named "Dunn G"

Introduction: Meningiomas are the most common primary central nervous system (CNS) tumor in adults, comprising one-third of all primary adult CNS tumors. Although several recent publications have identified molecular alterations in meningioma including characteristic mutations, copy number alterations, and gene expression signatures, our understanding of the drivers of meningioma recurrence is limited.

Objective: To identify gene expression signatures of 1p22qNF2 meningioma recurrence, with concurrent biallelic inactivation of and loss of chr1p that are heterogenous but enriched for recurrent meningiomas.

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Purpose: Recreational runners who need refractive visual correction will need to choose the type of visual correction (spectacles, contact lenses, or no correction) to wear when running. The prevalence of correction choices and distinguishing demographic features associated with these choices of correction were investigated.

Methods: A 26-item online questionnaire covering demographics, running habits, and visual corrections used was answered by 941 people.

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  • - Burnout in the medical field is linked to emotional exhaustion, depersonalization, and a decreased sense of achievement, and younger professionals are particularly at risk; this study focused on SNO Young Investigators to better understand their experiences.
  • - An anonymous survey was conducted in 2019 among eligible SNO members, gathering data on their characteristics and using the Maslach Burnout Inventory to assess burnout levels, with analysis including various statistical methods.
  • - The results showed that YI members reported higher levels of emotional exhaustion and depersonalization than the general population, with 30% classified as overextended and 15% experiencing burnout; stress was largely attributed to organizational challenges, indicating a need for systemic interventions.
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Background: Increased adiposity during pregnancy may be related to offspring risk for mental health disorders, although the biological mechanisms are poorly understood. One promising hypothesis is that factors secreted from adipocytes such as leptin and adiponectin may explain this association. The current study examined whether pregnancy or umbilical cord blood concentrations of leptin and/or adiponectin a) predict elevated infant negative affect at 6 months (an early life marker of risk for psychopathology); and b) help explain the association between pregnancy adiposity and increased infant negative affect.

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  • This study evaluated the safety and effectiveness of using disulfiram and copper (DSF/Cu) alongside radiation therapy (RT) and temozolomide (TMZ) in newly diagnosed glioblastoma (GBM) patients.
  • It involved administering standard RT and TMZ with DSF and Cu, followed by adjuvant treatment, while tracking drug concentrations in the body.
  • Although the maximum tolerated dose of DSF was 375 mg/d, the treatment showed limited overall success, except for promising results in BRAF-mutant patients, suggesting the need for further research.
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Critical stages of lytic herpes simplex virus type 1 (HSV-1) replication are marked by the sequential expression of immediate early (IE) to early (E), then late (L) viral genes. HSV-1 can also persist in neuronal cells via a non-replicative, transcriptionally repressed infection called latency. The regulation of lytic and latent transcriptional profiles is critical to HSV-1 pathogenesis and persistence.

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Immunotherapy for glioblastoma (GBM) remains an intensive area of investigation. Given the seismic impact of cancer immunotherapy across a range of malignancies, there is optimism that harnessing the power of immunity will influence GBM as well. However, despite several phase 3 studies, there are still no FDA-approved immunotherapies for GBM.

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Purpose: Outcomes for patients with glioblastoma (GBM) remain poor despite multimodality treatment with surgery, radiation, and chemotherapy. There are few immunotherapy options due to the lack of tumor immunogenicity. Several clinical trials have reported promising results with cancer vaccines.

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  • Survival rates for glioblastoma IDH wild-type (GBM) vary, emphasizing the need for improved surgical strategies, particularly given that most recurrences occur close to the resection margin.
  • A predictive model was created to determine which GBMs could achieve radiographic gross-total resection (GTR), showing strong accuracy in forecasting surgical outcomes based on tumor characteristics.
  • Analysis of surgical margins using a rapid method revealed that patients with undetected TERT promoter mutations after GTR had significantly better survival rates compared to those with detectable mutations.
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Unlabelled: Recent clinical trials have highlighted the limited efficacy of T cell-based immunotherapy in patients with glioblastoma (GBM). To better understand the characteristics of tumor-infiltrating lymphocytes (TIL) in GBM, we performed cellular indexing of transcriptomes and epitopes by sequencing and single-cell RNA sequencing with paired V(D)J sequencing, respectively, on TILs from two cohorts of patients totaling 15 patients with high-grade glioma, including GBM or astrocytoma, IDH-mutant, grade 4 (G4A). Analysis of the CD8+ TIL landscape reveals an enrichment of clonally expanded GZMK+ effector T cells in the tumor compared with matched blood, which was validated at the protein level.

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Achieving optimal cardiovascular health in rural populations can be challenging for several reasons including decreased access to care with limited availability of imaging modalities, specialist physicians, and other important health care team members. Therefore, innovative solutions are needed to optimize health care and address cardiovascular health disparities in rural areas. Mobile examination units can bring imaging technology to underserved or remote communities with limited access to health care services.

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Perinatal exposure to a high-fat, high-sugar Western-style diet (WSD) is associated with altered neural circuitry in the melanocortin system. This association may have an underlying inflammatory component, as consumption of a WSD during pregnancy can lead to an elevated inflammatory environment. Our group previously demonstrated that prenatal WSD exposure was associated with increased markers of inflammation in the placenta and fetal hypothalamus in Japanese macaques.

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  • Arachnoid cysts are common and usually don't cause problems, but sometimes they can rupture unexpectedly.
  • A 32-year-old person had to have emergency surgery because their cyst broke on its own.
  • It's important to quickly diagnose and treat a ruptured cyst, or it can lead to serious issues like brain swelling.
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Bone marrow-derived mesenchymal stem cells (BMSCs) have been recognized as new candidates for the treatment of serious endometrial injuries. However, owing to the local microenvironment of damaged endometrium, transplantation of BMSCs yielded disappointing results. In this study, Pectin-Pluronic F-127 hydrogel as scaffolds were fabricated to provide three-dimensional architecture for the attachment, growth, and migration of BMSCs.

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The Arthur and Sandra Irving Cancer Immunology Symposium has been created as a platform for established cancer immunologists to mentor trainees and young investigators as they launch their research career in the field. By sharing their different paths to success, the senior faculty mentors provide an invaluable resource to support the development of the next generation of leaders in the cancer immunology community. This Commentary describes some of the key topics that were discussed during the 2022 symposium: scientific and career trajectory, leadership, mentoring, collaborations, and publishing.

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Aim: To quantify the impact of foot complications on mortality outcomes in people with type 2 diabetes (T2D), and how routinely measured factors might modulate that risk.

Materials And Methods: Data for individuals with T2D for 2010-2020, from the Salford Integrated Care Record (Salford, UK), were extracted for laboratory and clinical data, and deaths. Annual expected deaths were taken from Office of National Statistics mortality data.

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About 50% of patients with locally advanced head and neck squamous cell carcinoma (HNSCC) experience recurrences after definitive therapy. The presurgical administration of anti-programmed cell death protein 1 (PD-1) immunotherapy results in substantial pathologic tumor responses (pTR) within the tumor microenvironment (TME). However, the mechanisms underlying the dynamics of antitumor T cells upon neoadjuvant PD-1 blockade remain unresolved, and approaches to increase pathologic responses are lacking.

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Background: Ethnic and socioeconomic inequalities in obstetric outcomes are well established. However, the role of induction of labour (IOL) to reduce these inequalities is controversial, in part due to insufficient evidence. This national cohort study aimed to identify adverse perinatal outcomes associated with IOL with birth at 39 weeks of gestation ("IOL group") compared to expectant management ("expectant management group") according to maternal characteristics in women with low-risk pregnancies.

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The emergence and explosive spread of the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) in 2019 highlighted the need to rapidly develop curated biobanks to inform the etiology, diagnosis, and treatment options for global outbreaks of communicable diseases. Recently, we undertook efforts to develop a repository of biospecimens from individuals aged 12 and older who were to be vaccinated against coronavirus disease 19 (COVID-19) with vaccines developed with support from the United States Government. We planned to establish 40 or more clinical study sites in at least six countries to collect biospecimens from 1,000 individuals, 75% of whom were to be SARS-CoV-2 naive at the time of enrollment.

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This article offers a different perspective of the current crisis in health care-burnout that is causing medical errors, disengagement, and economic chaos and forcing talented, experienced health care professionals to leave their institutions or their chosen professions altogether. The lack of meaningful impact lies in the focus on treating problems observed rather than on system issues underlying the more overt symptoms of burnout and attrition. The system within which health care workers perform impacts their capacity to consistently deliver high-quality care.

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  • Coronary artery anomalies (CAA) are congenital defects and the second leading cause of sudden cardiac death in young people, following hypertrophic cardiomyopathy.
  • Symptoms can vary widely, from chest pain and fainting to no symptoms at all, with a prevalence in the general population estimated at 1-2%.
  • Many cases go undiagnosed due to a lack of awareness, and CAAs are responsible for a significant portion of myocardial infarctions without traditional atherosclerotic disease, mainly presenting in patients who are often asymptomatic.
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