Journals / Turkish Journal of Gastroenterology / 2010 / Cilt: 21 - Sayı: 4

Mide kanserinde endotelial nitrik oksit sentaz gen polimorfizmi

Endothelial nitric oxide synthase gene polymorphism in gastric cancer

Pages
338–344
DOI
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⚡ TL;DR(Too Long; Didn't Read)

Conclusions: The results suggest that endothelial nitric oxide synthase 786T>C polymorphism may play a role in the development of gastric cancer.

📌 3 Key Takeaways

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Objective & Hypothesis:Background/aims: Nitric oxide, a labile compound synthesized by nitric oxide synthase, is a major regulator not only of physiological vascular tonus but also of the abnormal vascularity associated with tumors.
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Key Findings & Data:Methods: In this study, three major polymorphisms (786T>C, the 27 base pair variable number of tandem repeats in intron 4, and 894G>T) of the endothelial nitric oxide synthase gene were investigated in gastric cancer and normal tissues of 50 patients with gastric cancer and in the peripheral blood of 98 healthy subjects.
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Conclusion & Impact:Conclusions: The results suggest that endothelial nitric oxide synthase 786T>C polymorphism may play a role in the development of gastric cancer.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Background/aims: Nitric oxide, a labile compound synthesized by nitric oxide synthase, is a major regulator not only of physiological vascular tonus but also of the abnormal vascularity associated with tumors. Endothelial production of nitric oxide regulates blood flow and angiogenesis and reduces tumor cell adhesion to the endothelium. A high concentration of nitric oxide and its metabolites causes DNA damage during nitration, nitrosation and deamination. Both positive and negative effects on carcinogenesis and tumor growth, apoptosis, and cytotoxic mechanisms may be explained by differential susceptibility of tumor cells to nitric oxide-mediated reactions. Methods: In this study, three major polymorphisms (786T>C, the 27 base pair variable number of tandem repeats in intron 4, and 894G>T) of the endothelial nitric oxide synthase gene were investigated in gastric cancer and normal tissues of 50 patients with gastric cancer and in the peripheral blood of 98 healthy subjects. Results: We found no significant differences in intron 4a/b and 894G>T (Glu298Asp) allele and genotype frequencies between control and patient specimens. Nevertheless, the genotype and allele frequencies of 786T>C polymorphism were found to be significantly different between the healthy controls and tumor tissues. Conclusions: The results suggest that endothelial nitric oxide synthase 786T>C polymorphism may play a role in the development of gastric cancer.

Özet

Amaç: Nitrik oksit sentaz tarafından sentez edilen kararsız bir bileşik olan nitrik oksit sadece fizyolojik vasküler tonusu regüle etmez aynı zamanda tümörlerle ilişkili anormal vasküler tonusu da düzenler. Nitrik oksidin endotelyal üretimi kan akışını, anjiogenezi düzenler ve endotele tümör hücresi adhezyonunu azaltır. Nitrik oksidin yüksek konsantrasyonu ve metabolitleri nitrasyon, nitrozizasyon ve deaminasyon esnasında DNA hasarına yol açar. Karsinogenez, tümör büyümesi, apoptozis ve sitotoksik mekanizmalar üzerindeki hem pozitif hem negatif etkileri tümör hücrelerinin nitrik oksit aracılığı ile reaksiyonlara karşı değişken yatkınlıkları ile açıklanabilir. Yöntem: Bu çalışmada endotelyal nitrik oksit sentaz geninin üç farklı polimorfizmi (786T>C, intron 4'te 27 adet temel paylaşımlı ardışık değişken sayıda ve 894>T) 50 hastanın normal ve gastrik kanser dokularından alınan örneklerinde ve 98 sağlıklı insanın periferik kanlarında incelendi. Bulgular: İntron 4a/b ve 894G>T (Glu298Asp) alleli ve genotip frekanslarında kontrol ve hasta grupları arasında herhangi anlamlı farklılık saptanmadı. Ancak 786T>C polimorfizmi alel frekansı ve genotipte kontrol ve tümör dokuları arasında anlamlı farklılık tespit edilmiştir. Sonuç: Sonuçlar endotelyal nitrik oksit sentaz 786T>C polimorfizminin gastrik kanser oluşumunda rol oynayabileceğini göstermektedir.

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Cite This Article

ÜNAL, T. M., KARABULUT, H. G., GÜMÜŞ-AKAY, G., DÖLEN, Y., ELHAN, A. H., TÜKÜN, A., ÜNAL, A. E. (2010). Mide kanserinde endotelial nitrik oksit sentaz gen polimorfizmi. Turkish Journal of Gastroenterology, Cilt: 21 - Sayı: 4, 338–344. https://ajindex.com/articles/409761

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References (15)

  1. Stock M, Otto F. Gene deregulation in gastric cancer. Gene 2005; 30: 1-19
  2. Lynch HT. Gastric cancer: new genetic developments. J Surg Oncol 2005; 90: 114-33
  3. Zheng L, Wang L, Ajani J, Xie K. Molecular basis of gastric cancer development and progression. Gastric Cancer 2004; 7: 61-77
  4. Scartozzi M. Molecular biology of sporadic gastric cancer: prognostic indicators and novel therapeutic approaches. Cancer Treat Rev 2004; 30: 451-9
  5. Albercht EWJA, Stegeman CA, Heeringa P, et al. Protective role of endothelial nitric oxide synthase. J Pathol 2003; 199: 8-17
  6. Koh E, Noh SH, Lee YD, et al. Differential expression of nitric oxide synthase in human stomach cancer. Cancer Lett 1999; 146: 173-80
  7. Lu J, Wei Q, Bondy M, et al. Promoter polymorphism (-786T>C) in the endothelial nitric oxide synthase gene is associated with risk of sporadic breast cancer in non-Hispanic white women age younger than 55 years. Cancer 2006; 107: 2245-53
  8. Wang L, Shi GG, Yao JC, et al. Expression of endothelial nitric oxide synthase correlates with the angiogenic phenotype of and predicts poor prognosis in human gastric cancer. Gastric Cancer 2005; 8: 18-28
  9. Kavya R, Saluja R, Singh S, Dikshit M. Nitric oxide synthase regulation and diversity: implications in Parkinson's disease. Nitric Oxide 2006; 15: 280-94
  10. Lamblin N, Cuilleret FJ, Helbecque N, et al. A common variant of endothelial nitric oxide synthase (Glu298Asp) is associated with collateral development in patients with chronic coronary occlusions. BMC Cardiovasc Disord 2005; 5: 27
  11. Colombo MG, Andreassi MG, Paradossi U, et al. Evidence for association of a common variant of the endothelial nitric oxide synthase gene (Glu298·Asp polymorphism) to the presence, extent, and severity of coronary artery disease. Heart 2002; 87: 525-8
  12. Conde MC, Ramirez-Lorca R, Lopez-Jamar JM, et al. Genetic analysis of caveolin-1 and eNOS genes in colorectal cancer. Oncol Rep 2006; 16: 353-9
  13. Schneider BP, Adovich M, Sledge GW, et al. Association of polymorphisms of angiogenesis genes with breast cancer. Breast Cancer Res Treat online version (doi:10.1007/ s10549-007-9755-9)
  14. Martin JH, Begum S, Alalami O, et al. Endothelial nitric oxide synthase: correlation with histologic grade, lymph node status and estrogen receptor expression in human breast cancer. Tumor Biol 2000; 21: 90-7
  15. Lin Z, Chen S, Ye C, Zhu S. Nitric oxide synthase expression in human bladder cancer and its relation to angiogenesis. Urol