The binding of biotinylated BPA to parraffin sections of 18 normal gastrointestinal tract mucosa, 5 nonneoplastic polyps (NNP), 12 adenomas, and 59 carcinomas was studied by using avidinbiotin peroxidase complex (ABC) technique. In normal mucosa BPA appeared to bind both mucus and nonmucus glycoproteins but goblet cell mucus showed a decrease in binding and increase in binding of nonmucus glycoproteins as the cells lose their differentiation. BPA showed characteristic binding patterns in adenoma and carcinoma that differed from the pattern in normal mucosa. In normal mucosa linear binding to the apical cytoplasm in the columnar cells of the surface epithelium was observed, whereas in adenomas and carcinomas, in addition to the linear binding to the apical cytoplasm, diffuse cytoplasmic and granular deposits in the supranuclear, paranuclear or infranuclear zones were seen. Our findings suggest that BPA binding patterns in normal and neoplastic mucosa are related to the degree of cellular differentiation. In the process of malignant transformation the carbohydrate distribution undergoes progressive changes through the adenoma carcinoma sequence. These changes are related to the degree of dysplasia in adenomas and to the degree of differentiation in carcinomas.
Download full-text PDF |
Source |
|---|
Publication Analysis
Top Keywords
Similar Publications
Immunohistochemical Expression of VEGF and Microvessel Density (CD 34) in Oral Epithelial Dysplasia and Oral Squamous Cell Carcinoma: Original Research.
Asian Pac J Cancer Prev
January 2025
Adhiparasakthi Dental College and Hospital, Melmaruvathur, India.
Background: Angiogenesis, the formation of new blood vessels from preexisting ones via capillary sprouting, is a crucial process in tumor growth and metastasis. As a tumor's angiogenic capacity increases, its microvasculature, measured by micro vessel density (MVD), also increases. This study aims to evaluate the expression of Vascular Endothelial Growth Factor (VEGF) and CD34 in oral epithelial dysplasia and oral squamous cell carcinoma through immunohistochemical methods.
View Article and Find Full Text PDFDeep learning system for the differential diagnosis of oral mucosal lesions through clinical photographic imaging.
J Dent Sci
January 2025
School of Dentistry, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
Background/purpose: Oral mucosal lesions are associated with a variety of pathological conditions. Most deep-learning-based convolutional neural network (CNN) systems for computer-aided diagnosis of oral lesions have typically concentrated on determining limited aspects of differential diagnosis. This study aimed to develop a CNN-based diagnostic model capable of classifying clinical photographs of oral ulcerative and associated lesions into five different diagnoses, thereby assisting clinicians in making accurate differential diagnoses.
View Article and Find Full Text PDFPoorly performed circumcisions can lead to severe complications, including penile injury and psychological distress. We present the case of a 9-year-old male who suffered from glans amputation following a poorly performed circumcision. The patient underwent successful penile refashioning and glans reconstruction with a buccal mucosa graft.
View Article and Find Full Text PDFEndoscopic Submucosal Dissection of Gastric High-Grade Foveolar Dysplasia With Normal Background Mucosa.
Gastro Hep Adv
October 2024
Division of Gastroenterology, Kingston Health Sciences Centre, Queen's University, Kingston General Hospital, Kingston, Ontario, Canada.
Most gastric neoplastic lesions appear in patients with gastric premalignant conditions. Here, we present the case of a 75-year-old woman with no prior history of infection, with a big gastric adenoma resected by endoscopic submucosal dissection. Histopathological examination revealed high-grade foveolar dysplasia.
View Article and Find Full Text PDFNobiletin restores the intestinal barrier of HFD-induced obese mice by promoting MHC-II expression and lipid metabolism.
Mol Med
January 2025
Department of Fundamental Medicine, Chengdu University of Traditional Chinese Medicine, Chengdu, 610072, Sichuan Province, China.
The incidence of obesity is increasing annually worldwide. A high-fat diet (HFD) causes intestinal barrier damage, but effective interventions are currently unavailable. Our previous work demonstrated the therapeutic effect of nobiletin on obese mice; thus, we hypothesized that nobiletin could reverse HFD-induced damage to the intestinal barrier.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!