Aim: To investigate the clinical significance of the expression of VEGF165mRNA and the correlation with vascular endothelial growth factor (VEGF) protein and inducible nitric oxide synthase (iNO) in human gastric cancer.
Methods: We tested VEGF165mRNA expression in 31 cases of resected gastric cancer specimens and normal paired gastric mucosae by RT-PCR. Total RNA was extracted with TRIzol reagents, transcribed into cDNA with oligo (dT15) priming, inner controlled with beta-actin expression and agarose gel isolated after PCR. VEGF expression was quantitated with IS1000 imaging system. Meanwhile we also examined expression levels of VEGF protein and iNOS in 85 cases of gastric cancer. All paraffin-embedded samples were immunohistochemically stained by streptavidin -peroxidase method (SP).
Results: The mean expression of VEGF165mRNA in gastric cancer was 1.125+/-0.356, significantly higher than that of normal paired mucosae, which was 0.760+/-0.278. The data indicated that the expression level of VEGF165mRNA was well related to lymph node metastasis and TNM stages of UICC. The expression levels in patients with lymph node metastasis and without lymph node metastasis were 1.219+/-0.377 and 0.927+/-0.205 respectively (P<0.05). The expression in stages I, II, III, IV was 0.934+/-0.194, 1.262+/-0.386 respectively (P<0.01). Further analysis showed the lymph node metastasis rate in the group with over-expression of VEGF was higher than that in the group with low expression of VEGF (83.3% vs 46.2%), and the ratio of stage III+IV in the group with over-expression of VEGF was also higher than that in the group with low expression with VEGF (77.8% vs 33.8%) (P<0.05). The positive rates of expression of VEGF protein and iNOS in 85 cases of gastric cancer were 75.4% and 58.8% respectively, and 50.1% of the patients showed positive staining both for iNOS and VEGF, the correlation with the two factors was significant (P=0.018). But more intensive analysis showed the immunoreactive grades of VEGF were not associated with that of iNOS.
Conclusions: The expression of VEGF165mRNA is well related with lymph node metastasis and TNM stages of UICC in gastric cancer, and is concerned with the invasiveness and metastasis of gastric cancer. The relationship can be observed between the expression of VEGF and iNOS in gastric cancer.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4622761 | PMC |
| http://dx.doi.org/10.3748/wjg.v10.i9.1250 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Construction of a prognostic model for gastric cancer based on immune infiltration and microenvironment, and exploration of MEF2C gene function.
BMC Med Genomics
January 2025
Department of Oncology, The First People's Hospital of Yibin, No.65, Wenxing Street, Cuiping District, Yibin, 644000, China.
Background: Advanced gastric cancer (GC) exhibits a high recurrence rate and a dismal prognosis. Myocyte enhancer factor 2c (MEF2C) was found to contribute to the development of various types of cancer. Therefore, our aim is to develop a prognostic model that predicts the prognosis of GC patients and initially explore the role of MEF2C in immunotherapy for GC.
View Article and Find Full Text PDFArea of Residual Tumor Measurement After Preoperative Chemotherapy as an Objective and Quantitative Method for Predicting the Prognosis of Gastric Cancer: A Single-Center Retrospective Study.
World J Surg
January 2025
Division of Pathology, Exploratory Oncology Research & Clinical Trial Center, National Cancer Center, Kashiwa, Japan.
Background: Pathological regression grade after chemotherapy evaluated by surgically resected specimens is closely related with prognosis. Since usefulness of measuring the area of the residual tumor (ART) has been reported, this study aimed to evaluate the utility of ART in predicting the prognosis of patients with gastric cancer (GC) who received preoperative chemotherapy.
Methods: This single-center retrospective study examined the relationship between ART and survival outcomes.
Reflecting on the impact of the COVID pandemic on patient management and its subsequent influence on long-term outcomes: a case-control study in the field of esophago-gastric cancer.
World J Surg Oncol
January 2025
Department of Oesophago-Gastric & Bariatric Surgery, Salford Care Organisation, Northern Care Alliance NHS Foundation Trust, Salford Royal Hospital, Manchester, UK.
Background: The delivery of cancer services changed significantly during the COVID-19 pandemic. This study aimed to describe changes in presentations, assess the change in recommendations by the MDT during the pandemic, and describe the subsequent long-term impact of these changes on survival rates in patients with EG cancer.
Methods: A retrospective cohort study was designed comparing three patient groups of those referred to EG MDT in the same 6-month period pre-pandemic (PP;2019) during the initial phase of the pandemic (P1;2020) and the year after the initial phase (P2;2021).
Comparison of the safety of esophagojejunal overlap and π-shaped anastomosis in totally laparoscopic total gastrectomy.
BMC Surg
January 2025
Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Gastrointestinal Surgery IV, Peking University Cancer Hospital & Institute, Beijing, 100142, China.
Background: Globally, totally laparoscopic total gastrectomy is increasingly being accepted by surgeons for the treatment of gastric cancer. Overlap anastomosis and π-shaped anastomosis are the two most commonly used anastomosis methods in total laparoscopic surgery; however, their safety and suitability for the population are still unclear.
Methods: A total of 162 consecutive patients with gastric cancer who underwent total laparoscopic total gastrectomy with overlap or π-shaped anastomosis were retrospectively analyzed.
Helicobacter pylori CagA promotes gastric cancer immune escape by upregulating SQLE.
Cell Death Dis
January 2025
Department of Gastroenterology, Beijing Friendship Hospital, Capital Medical University, State Key Laboratory for Digestive Health, National Clinical Research Center of Digestive Diseases, Beijing Digestive Disease Center, Beijing, 100050, China.
Helicobacter pylori (H. pylori) infection is a well-established risk factor for gastric cancer, primarily due to its virulence factor, cytotoxin-associated gene A (CagA). Although PD-L1/PD-1-mediated immune evasion is critical in cancer development, the impact of CagA on PD-L1 regulation remains unclear.
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!