Oral cavity cancers are the 15th most common cancer with more than 350,000 new cases and ~178,000 deaths each year. Among them, squamous cell carcinoma (SCC) accounts for more than 90% of tumors located in the oral cavity and on oropharynx. For the oral cavity SCC, the surgical resection remains the primary course of treatment. Generally, surgical margins are defined intraoperatively using visual and tactile elements. However, in 15-30% of cases, positive margins are found after histopathological examination several days postsurgery. Technologies based on mass spectrometry (MS) were recently developed to help guide surgical resection. The SpiderMass technology is designed for real-time analysis under minimally invasive conditions. This instrument achieves tissue microsampling and real-time molecular analysis with the combination of a laser microprobe and a mass spectrometer. It ultimately acts as a tool to support histopathological decision-making and diagnosis. This pilot study included 14 patients treated for tongue SCC (T1 to T4) with the surgical resection as the first line of treatment. Samples were first analyzed by a pathologist to macroscopically delineate the tumor, dysplasia, and peritumoral areas. The retrospective and prospective samples were sectioned into three consecutive sections and thaw-mounted on slides for H&E staining (7 μm), SpiderMass analysis (20 μm), and matrix-assisted laser desorption ionization (MALDI) MS imaging (12 μm). The SpiderMass microprobe collected lipidometabolic profiles of the dysplasia, tumor, and peritumoral regions annotated by the pathologist. The MS spectra were then subjected to the multivariate statistical analysis. The preliminary data demonstrate that the lipidometabolic molecular profiles collected with the SpiderMass are significantly different between the tumor and peritumoral regions enabling molecular classification to be established by linear discriminant analysis (LDA). MALDI images of the different samples were submitted to segmentation for cross instrument validation and revealed additional molecular discrimination within the tumor and nontumor regions. These very promising preliminary results show the applicability of the SpiderMass to SCC of the tongue and demonstrate its interest in the surgical treatment of head and neck cancers.
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http://dx.doi.org/10.3389/froh.2022.827360 | DOI Listing |
Sci Rep
January 2025
Department of Pediatric Dentistry, Faculty of Dentistry, Damascus University, Damascus, Syrian Arab Republic.
This study aimed to determine the incidence of traumatic dental injuries (TDIs) during oral tracheal intubation by traditional laryngoscopy in general anesthesia (GA) in pediatric patients aged 4-13 and the correlated risk factors in Damascus, Syria. The study included children at the Department of General Surgery, Damascus University. Each child was examined before, during, and after 12-24 h of entering the operation room.
View Article and Find Full Text PDFSupport Care Cancer
January 2025
Dentistry Department, Barretos Cancer Hospital, Barretos, São Paulo, Brazil.
Objective: To compare the treatment of osteoradionecrosis (ORN) using a protocol that incorporates antimicrobial photodynamic therapy with a conventional treatment protocol.
Methodology: This retrospective study analyzed 55 patients diagnosed with ORN at a reference hospital between 2002 and 2021. Patients were treated using two different clinical protocols.
BMC Microbiol
January 2025
Shanghai-MOST Key Laboratory of Health and Disease Genomics, NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Shanghai, 200237, China.
Background: Recurrent vaginitis in conjunction with urinary tract infection (RV/UTI) in perimenopausal women is a common clinical condition that impacts both doctors and patients. Its pathogenesis is not completely known, but the urogenital microbiota is thought to be involved. We compared the urogenital and gut microbiotas of perimenopausal women experiencing RV/UTI with those of age-matched controls to provide a new microbiological perspective and scheme for solving clinical problems.
View Article and Find Full Text PDFAntiviral Res
January 2025
INSERM, Research Center for Respiratory Diseases, UMR 1100, University of Tours, France. Electronic address:
The respiratory tract hosts a diverse microbial community whose composition varies with anatomical location and throughout life. Rothia mucilaginosa, a common commensal of the upper respiratory tract and oral cavity, has recently been recognized for its ability to inhibit bacteria-triggered pro-inflammatory responses. However, its role in modulating the immune response to viral infections such as influenza A virus (IAV) pneumonia, remains unknown.
View Article and Find Full Text PDFJ Stomatol Oral Maxillofac Surg
January 2025
Department of Psychosomatic Dentistry, Graduate School of Medical and Dental Sciences, Institute of Science Tokyo, Tokyo, Japan, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan. Electronic address:
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