Background: We have investigated the correlations among the expression of proliferating cell nuclear antigen (PCNA), p53, p21, and the prognosis of primary gastric lymphoma, and we have investigated apoptosis by using transferase-mediated deoxyuridine triphosphate nick-end labeling staining.
Methods: A retrospective study was performed on 33 cases of primary gastric lymphoma that were surgically resected. Histopathologic examination was undertaken according to the Working Formulation classification. Immunohistochemical staining was performed by using the avidin-biotin-peroxidase complex method, with anti-PCNA antibody, anti-p53 antibody, and anti-p21 antibody. Apoptosis was quantified in situ from paraffin-embedded specimens by using an in situ apoptosis detection kit.
Results: On histologic grade, the survival rate of high-grade type was significantly lower than that of low-grade type and than that of intermediate-grade type. The PCNA index of low-grade type was significantly lower than that of intermediate-grade type and than that of high-grade type. Those patients who experienced recurrence were both p53(+) and p21(-). Two of these patients were receiving postoperative chemotherapy but nevertheless experienced recurrence at 18 months and at 5 months after surgery. The PCNA index of p53(+) p21(-) cases was significantly higher than that of p53(-) p21(+) cases. The apoptotic count of p53(-) p21(+) cases was significantly higher than that of p53(+) p21(-) cases.
Conclusions: The Working Formulation classification and the PCNA index were each significant factors predicting the prognosis of primary gastric lymphoma. The prognosis of p53(+) p21(-) cases was poor, and the apoptotic count of p53(+) p21(-) cases was low. Accordingly, the effect of combined chemotherapy for those cases was thought to be poor.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1067/msy.2002.124929 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
FN1 shapes the behavior of papillary thyroid carcinoma through alternative splicing of EDB region.
Sci Rep
January 2025
Department of General Surgery, XiangYa Hospital Central South University, No. 87 XiangYa Road, Changsha, 410008, Hunan, China.
Papillary thyroid cancer (PTC) is often characterized by indolent behavior, small tumors with slow cell proliferation and a tendency to metastasize to cervical lymph node simultaneously, and the molecular mechanisms underlying that remain poorly understood. In this study, FN1 was the hottest gene of PTC and distinctive expression in PTC cells. FN1 deficiency severely inhibited the p53 signaling pathway, especially cyclin proteins, resulting in increased cell growth but hampered invasion.
View Article and Find Full Text PDFOptimally designed PEGylatied arabinoxylan paclitaxel nano-micelles as alternative delivery for Abraxane®: A potential targeted therapy against breast and lung cancers.
Int J Biol Macromol
December 2024
Group of Bionanotechnology and Molecular Cell Biology, Nanomedicine department, Institute of Nanoscience and Nanotechnology, Kafrelsheikh University, 33516 Kafrelsheikh, Egypt. Electronic address:
Paclitaxel (PTX) binds to spindle microtubules and inhibits mitotic division leading to cell death. However, its wide distribution, high absorption, and less selectively, minimize its application in cancer clinics. In this study, isolated arabinoxylans were used to encapsulate PTX, and then both were covered by polyethylene glycol conjugated to folic acid (FA), to strengthen its specificity to cancerous cells.
View Article and Find Full Text PDF[Peptidergic regulation of expression of cellular aging marker proteins in buccal epithelium.].
Adv Gerontol
January 2025
Belgorod State National Research University, 85 build. 10 Pobedy str., Belgorod 308015, Russian Federation, e-mail:
The review presents the results of long-term research conducted by the staff of the Saint-Petersburg Institute of Bioregulation and Gerontology, dedicated to the study of the biological activity of peptide bioregulators at all levels of a living organism's organization. This review compares the findings of domestic and international studies in this field. At the same time, the priority of Russian scientists in the use of buccal epithelium as a diagnostic marker of age-associated pathology is indicated.
View Article and Find Full Text PDFQuantitative study on hepatic genotoxicity of neodymium and its molecular mechanisms based on Benchmark Dose method.
Front Pharmacol
December 2024
Institute of Chemical Toxicity Testing/NHC Specialty Laboratory of Food, Safety Risk Assessment and Standard Development/State Environmental Protection Key Laboratory of Environmental Health Impact Assessment of Emerging Contaminants, Shanghai Municipal Center for Disease Control and Prevention, Shanghai, China.
Introduction: Neodymium, a rare earth element, has been shown to induce genotoxicity in mice, but the molecular mechanisms behind this effect are not fully understood. This study aims to investigate the genotoxic effects of intragastric administration of neodymium nitrate (Nd(NO)) over 28 consecutive days and to elucidate the underlying molecular mechanisms.
Methods: We detected the content of neodymium in mouse liver tissue using ICP-MS and assessed the percentage of tail DNA in mouse hepatocytes using the alkaline comet assay to evaluate genotoxicity.
Red ginseng prevents niraparib-induced myelosuppression in C57BL/6 mice via inhibiting p53-mediated upregulation of p21 and p27.
J Nat Med
December 2024
Department of Gynecologic Oncology, the Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510120, People's Republic of China.
Myelosuppression is a serious and common complication of targeted therapy for cancer patients, and there are few studies exploring the efficacy of natural drugs in this condition. Niraparib is a widely used targeted therapy for the treatment of advanced ovarian cancer. As a poly (ADP-ribose) polymerase (PARP) inhibitor, niraparib significantly improves progression-free and overall survival in patients.
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!