Analysis of apoptotic cells in oral pathological states could be useful for determining the rates of tissue turnover, which would help determine prognosis. The use of histochemical stains such as hematoxylin and eosin (H & E) and methyl green-pyronin (MGP) can provide a simple and cost-effective method for detecting apoptotic cells. We compared the efficacy of MGP and H & E for detecting apoptotic cells in oral squamous cell carcinoma (OSCC), oral leukoplakia (OL), oral submucous fibrosis (OSMF) and normal oral mucosa (NOM). Ten cases each of OSCC, OSMF, OL and NOM were retrieved from the archives and two serial sections were stained, one with H & E and the other with MGP. Apoptotic cells were identified at 100 x magnification and the apoptotic index was calculated. Apoptotic cells were distinguished more readily in MGP stained sections than in those stained with H & E. Also, the apoptotic cell count was greater in OSCC compared to OL, OSMF and NOM. We concluded that MGP staining can be used as a routine, cost-effective method for detecting apoptotic cells.
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http://dx.doi.org/10.3109/10520295.2014.982709 | DOI Listing |
Dokl Biochem Biophys
January 2025
Department of Biophysics, Faculty of Medicine, Van Yuzuncu Yil University, Van, Türkiye.
Laryngeal squamous cell carcinoma is a common type of head and neck cancer. This study investigated the role of the TRPM2 channel in doxorubicin (DOX)-induced cell damage in human laryngeal squamous cancer cells (Hep-2). Cells were exposed to various DOX concentrations and the appropriate dose was found.
View Article and Find Full Text PDFCell Mol Life Sci
January 2025
Institute of Endotypes in Oncology, Metabolism, and Immunology, National Research Council, Via Pietro Castellino 111, Naples, Italy.
Breast cancer represents the primary cause of death of women under 65 in developed countries, due to the acquisition of multiple drug resistance mechanisms. The PI3K/AKT pathway is one of the major regulating mechanisms altered during the development of endocrine resistance and inhibition of steps in this signalling pathway are adopted as a key strategy to overcome this issue. ADP-ribosylation is a post-translational modification catalysed by PARP enzymes that regulates essential cellular processes, often altered in diseases.
View Article and Find Full Text PDFExp Dermatol
January 2025
Department of Dermatology, Ajou University School of Medicine; Suwon, Suwon, Korea.
Senescent melanocytes have been suggested to play a role in the development of ageing-associated pigmentary changes and skin ageing. Here, we assessed the senolytic capacity of recognised senolytic chemicals and natural compounds in UV-irradiated senescent melanocytes. Among the tested agents, only ABT-737 and ABT-263 showed a significant reduction in the number of SA-β-Gal-positive senescent melanocytes and in the expressions of p16 and p21.
View Article and Find Full Text PDFJCI Insight
January 2025
Section of Vascular Surgery, Department of Surgery, and.
Abdominal aortic aneurysms (AAA) are a life-threatening cardiovascular disease for which there is a lack of effective therapy preventing aortic rupture. During AAA formation, pathological vascular remodeling is driven by vascular smooth muscle cell (VSMC) dysfunction and apoptosis, for which the mechanisms regulating loss of VSMCs within the aortic wall remain poorly defined. Using single-cell RNA-Seq of human AAA tissues, we identified increased activation of the endoplasmic reticulum stress response pathway, PERK/eIF2α/ATF4, in aortic VSMCs resulting in upregulation of an apoptotic cellular response.
View Article and Find Full Text PDFFront Pharmacol
January 2025
Institute of Agro-food Technology, Jilin Academy of Agricultural Sciences (Northeast Agricultural Research Center of China), Changchun, China.
Objective: Minor ginsenosides have demonstrated promising anticancer effects in previous reports. Total minor ginsenosides (TMG) were obtained through the fermentation of major ginsenosides with , and potential anticancer effects of TMGs on the mouse colon cancer cell line CT26.WT, and , were investigated.
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