Publications by authors named "James Bonney"

Article Synopsis
  • The study investigates lymph node stromal cell cultures (LNSCs) from oral squamous cell carcinoma (OSCC) patients to understand tumor interactions for better treatment options.
  • Primary cultures were developed from both metastatic and non-metastatic patient nodes, confirming their purity and revealing a variety of cell types.
  • Transcriptomic and cytokine profiling showed different molecular alterations based on node status, with key insights into immune response and potential pathways for metastasis, highlighting the relevance of these models for future cancer research.
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Introduction: WHO guidance supports implementation of drowning prevention interventions. This study aimed to examine barriers and facilitators of use of WHO guidance on basic swimming and water safety skills in low-resource settings, gathering insights inform codesign of technical resources.

Methods: Mixed methods were used comprising WHO guidance gap analysis, participant surveys and thematic analysis of workshop discussions (17 participants and 13 countries).

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Profiling studies using reverse transcription quantitative PCR (RT-qPCR) require reliable normalization to reference genes to accurately interpret the results. A stable reference gene panel was established to profile metastatic and non-metastatic lymph nodes in patients with oral squamous cell carcinoma. The stability of 18S ribosomal RNA (), ribosomal Protein Lateral Stalk Subunit P0 (), ribosomal Protein L27 (), TATA-box binding protein (), hypoxanthine phosphoribosyl-transferase 1 (), beta-actin (), glyceraldehyde-3-Phosphate Dehydrogenase () and vimentin () was evaluated, as reference genes for profiling patient-derived lymph node stromal cells (LNSCs; N=8; N0:6, N+:2) and lymph node tissues (Patients:14, Nodes=20; N0:7; N+:13).

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Non-invasive strategies that can identify oral malignant and dysplastic oral potentially-malignant lesions (OPML) are necessary in cancer screening and long-term surveillance. Optical coherence tomography (OCT) can be a rapid, real time and non-invasive imaging method for frequent patient surveillance. Here, we report the validation of a portable, robust OCT device in 232 patients (lesions: 347) in different clinical settings.

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Article Synopsis
  • Early detection of oral cancer requires a minimally invasive diagnostic tool for effective screening, and this study evaluates a tele-cytology system combined with an Artificial Neural Network (ANN) for improved diagnosis of potentially malignant oral lesions.
  • The portable, tablet-based tele-cytology platform, Cellscope, demonstrated an accuracy of 84-86% in detecting oral lesions, with improvements seen when integrating image processing and a risk stratification model, resulting in a significant increase in sensitivity for malignant lesions to 93%.
  • This research highlights the potential of tele-cytology and ANN-based analysis as valuable tools for remote, accurate diagnosis and early screening of oral cancer, making it a promising Point-of-Care solution.
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Objectives: Surgical margin status is a significant determinant of treatment outcome in oral cancer. Negative surgical margins can decrease the loco-regional recurrence by five-fold. The current standard of care of intraoperative clinical examination supplemented by histological frozen section, can result in a risk of positive margins from 5 to 17 percent.

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Purpose: Accurate detection of human papillomavirus (HPV) in oral cavity squamous cell carcinoma (OSCC) is essential to understanding the role of HPV in disease prognosis and management of patients. We used different analytes and methods to understand the true prevalence of HPV in a cohort of patients with OSCC with different molecular backgrounds, and we correlated HPV data with patient survival.

Methods: We integrated data from multiple analytes (HPV DNA, HPV RNA, and p16), assays (immunohistochemistry, polymerase chain reaction [PCR], quantitative PCR [qPCR], and digital PCR), and molecular changes (somatic mutations and DNA methylation) from 153 patients with OSCC to correlate p16 expression, HPV DNA, and HPV RNA with HPV incidence and patient survival.

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Aim: The aim of this study was to determine whether intra-oral de novo regenerated mucosa (D) that grew over free fibula flap reconstructed-mandibles resembled the donor tissue i.e. external skin (S) of the lateral leg, or the recipient site tissue, i.

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Oral cancer is the most common type of cancer among men in India and other countries in South Asia. Late diagnosis contributes significantly to this mortality, highlighting the need for effective and specific point-of-care diagnostic tools. The same regions with high prevalence of oral cancer have seen extensive growth in mobile phone infrastructure, which enables widespread access to telemedicine services.

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Article Synopsis
  • This study aimed to identify clinically relevant biomarkers for head and neck squamous cell carcinoma (HNSCC) by analyzing data from 20 public microarray series, focusing on gene expression differences between normal and tumor samples.
  • A total of 181 differentially expressed genes were identified, with significant interactions among many of them, and a gene panel (ECT2, ANO1, TP63, FADD, EXT1, NCBP2) was linked to alterations in about 30% of the tested tumor samples.
  • Validation in patient groups showed specific genes like ANO1 and FADD could predict recurrence and treatment response, indicating their potential as biomarkers for monitoring disease outcomes in HNSCC patients.
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