We studied the premalignant nature of achalasia using anti-Ki-67 and anti-p53 monoclonal antibodies immunohistochemically. In this study, four patients with esophageal carcinoma and achalasia were investigated. Three tumors were pT4 (UICC pTNM) and one tumor was pT1. The majority of non-malignant esophageal epithelium showed esophagitis and/or dysplasia histologically. Esophageal epithelial cells in the lesions of esophagitis and/or dysplasia had a higher number of Ki-67-positive cells than normal epithelial cells. p53 protein was expressed in two tumors and it was not expressed in non-malignant epithelium. From these results, we found that esophageal epithelium in achalasia lesions is changed to varying degrees of esophagitis and/or dysplasia by stagnation of intake foods, and these abnormal epithelial cells showed a high proliferative state compared with the normal cells without the p53 gene mutation. We suggest that the distinct proliferative status is a cause of carcinogenesis.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1046/j.1442-2050.2000.00088.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effects of the Transcutaneous Electrical Stimulation System on Heartburn, Regurgitation and Esophageal Acid Exposure in GERD Patients-An Uncontrolled Feasibility Study.
Neurogastroenterol Motil
January 2025
Division of Gastroenterology, Rabin Medical Center, Beilinson Campus, Petah Tikva, Israel.
Background: Proton pump inhibitors (PPI) for gastroesophageal reflux disease (GERD) are associated with a high failure rate. Our uncontrolled feasibility study aimed determining the effect of a transcutaneous electrical stimulation system (TESS) on GERD symptoms and acid exposure time (AET).
Methods: Recruited patients with heartburn and regurgitation.
Prognostic value of immunosuppression scores in patients with esophageal squamous cell carcinoma: a multicenter study.
Front Immunol
January 2025
Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian, China.
Introduction: The prognostic impact of human leukocyte antigen-E (HLA-E) expression and the proportion of natural killer (NK) cells in esophageal squamous cell carcinoma (ESCC) was investigated.
Methods: This study retrospectively evaluated 397 ESCC patients across two centers. The cumulative incidence of recurrence (CIR) and the incidence of tumor-related death (CID) were analyzed in various groups.
Pseudoprogression in CAR-T cell therapy for solid tumor: Case report.
Front Immunol
January 2025
Biotherapy Center & Cancer Center, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
We reported the pseudoprogression in an elderly patient with advanced gastric cancer after chimeric antigen receptor (CAR)-T cell therapy. The hepatic metastases enlarged 1 month after CAR-T cell infusion and then shrunk the next month as seen through computed tomography scanning. Based on a comprehensive evaluation that includes imaging, pathology, serum tumor markers, and clinical symptoms, we arrived at a diagnosis of pseudoprogression after CAR-T cell therapy, which has not been reported in previous studies.
View Article and Find Full Text PDFPre-operative bariatric patient characteristics driving hiatal hernia repair decision by operating surgeons.
Surg Pract Sci
September 2023
Department of General Surgery, Morsani College of Medicine, University of South Florida, Tampa, FL.
Background: Hiatal hernia (HH) is routinely reported in 40% of bariatric surgery patients. Left unrepaired, HH can lead to post-surgical reflux, regurgitation, and vomiting.
Objectives: We hypothesize that patients with pre-operative reflux symptoms and a higher body mass index (BMI) will receive hiatal hernia repairs (HHR) more often.
Localized Drug Delivery in Different Gastrointestinal Cancers: Navigating Challenges and Advancing Nanotechnological Solutions.
Int J Nanomedicine
January 2025
Department of Pharmacology, Faculty of Pharmacy, Delta University for Science and Technology, Gamasa, 11152, Egypt.
Different types of cancers affect the gastrointestinal tract (GIT), starting from the oral cavity and extending to the colon. In general, most of the current research focuses on the systemic delivery of the therapeutic agents, which leads to undesired side effects and a limited enhancement in the therapeutic outcomes. As a result, localized delivery within gastrointestinal (GI) cancers is favorable in overcoming these limitations.
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!