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Expression of cyclooxygenase 2 and vascular endothelial growth factor in gastric carcinoma : relationship with clinicopathological parameters
Joint Authors
Hafiz, Nisrin H.
Tahun, Nifin S.
Source
Journal of the Egyptian National Cancer Institute
Issue
Vol. 28, Issue 3 (30 Sep. 2016), pp.149-156, 8 p.
Publisher
Cairo University National Cancer Institute
Publication Date
2016-09-30
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Background : Gastric cancer is one of the most common cancers and the second most common cause of cancer-related death worldwide.
Identification of specific prognostic indicators might allow a better prognostic stratification and more effective therapy.
Aim : To assess the expression and relationship between COX-2 and VEGF protein in gastric adenocarcinoma and whether these markers are useful in predicting clinicopathological prognostic parameters.
Materials and methods : The study included 83 formalin-fixed paraffin embedded tissue samples of excised gastric adenocarcinoma and 20 non tumorous tissue controls.
The slides were subjected to COX-2 and VEGF immunohistochemical staining using a streptavidin–biotinperoxidase according to the manufacturer’s protocol.
The results were assessed independently by two pathologists.
The relationships among COX-2 and VEGF expression and clinicopathological parameters were statistically analyzed.
Results: COX-2 and VEGF expressions were obviously higher in carcinoma tissues compared to normal mucosae (p < 0.001).
The expression rate of COX-2 was 54.2 % and of VEGF was 68.7 %.
COX-2 positive tumors were significantly correlated with Lauren classification, tumor depth and Helicobacter pylori infection (p < 0.001, p = 0.008, p = 0.035).
VEGF was significantly associated with lymph node metastasis and tumor depth (p<0.001).
There was a positive association between VEGF and COX-2 expression in gastric adenocarcinoma (Kappa value = 0.55).
Conclusion : In gastric adenocarcinoma, COX-2 expression might serve as a powerful indicator for intestinal type carcinoma, locally advanced disease and H.
pylori infection, while VEGF was related to loco-regional progression.
COX-2 might be involved in the development of angiogenesis in gastric carcinoma through VEGF upregulation.
American Psychological Association (APA)
Hafiz, Nisrin H.& Tahun, Nifin S.. 2016. Expression of cyclooxygenase 2 and vascular endothelial growth factor in gastric carcinoma : relationship with clinicopathological parameters. Journal of the Egyptian National Cancer Institute،Vol. 28, no. 3, pp.149-156.
https://search.emarefa.net/detail/BIM-708857
Modern Language Association (MLA)
Hafiz, Nisrin H.& Tahun, Nifin S.. Expression of cyclooxygenase 2 and vascular endothelial growth factor in gastric carcinoma : relationship with clinicopathological parameters. Journal of the Egyptian National Cancer Institute Vol. 28, no. 3 (Sep. 2016), pp.149-156.
https://search.emarefa.net/detail/BIM-708857
American Medical Association (AMA)
Hafiz, Nisrin H.& Tahun, Nifin S.. Expression of cyclooxygenase 2 and vascular endothelial growth factor in gastric carcinoma : relationship with clinicopathological parameters. Journal of the Egyptian National Cancer Institute. 2016. Vol. 28, no. 3, pp.149-156.
https://search.emarefa.net/detail/BIM-708857
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 156
Record ID
BIM-708857