Investigation of survivin gene polymorphism in patients with gastric carcinoma

Abstract

Objectives: Despite decreasing incidence of gastric cancer in worldwide, it is still a major health problem. Every year, 30.000 new gastric cancer cases emerging, and it is the second most common cancer in Turkey. Gastric cancer is a complex multifactorial disease, emerging by interaction between genetic and environmental factors. Survivin, apoptosis inhibitory protein is over-expressed in cancer tissue. In this study, association between Survivin -31G/C polymorphism and gastric carcinoma was investigated. Materials and Methods: 46 gastric carcinoma patients who had been admitted at Düzce University Research and Practice Hospital, Laboratory of Pathology and 42 healthy individuals have been included in the study. Samples have been subjected to genetic analysis by PCR-RFLP method in Medical Genetics Department laboratory at Düzce University. Results: GG genotype was found in 16 (34.8%), GC genotype in 21 (45.7%), CC genotype in 9 (19.6%) in patient group. In control group, genotype distribution were found 13 (31%), 26 (61.9%) and 3 (7.1%) respectively. The statistically significant difference was not found when compared between patient and control groups. However, we observed the increased occurrence of gastric cancer associated with CC genotype (OR=1.52). Conclusions: In our knowledge, this study is the first to evaluate the relationship between gastric carcinoma and Survivin -31G/C polymorphism in Turkish population. Our results show that there is no any association between gastric carcinoma and Survivin -31G/C polymorphism in the community which is represented by our study and control groups. However, it was concluded that CC genotype may create the susceptibility to gastric cancer.

Keywords

• Polymorphism, gastric carcinoma, surviving gene, apoptosis

Mide kanseri hastalarında survivin gen polimorfizmi araştırılması

Abstract

Amaç: Dünya genelinde mide kanserinin insidansı düşmesine rağmen hala önemli bir sağlık problemidir. Türkiye\'de ise yılda 30.000 yeni mide kanseri vakasıyla 2. en sık görülen kanserdir. Mide kanseri genetik ve çevresel faktörlerin etkileşimiyle ortaya çıkan çok faktörlü karmaşık bir hastalıktır. Kanserli dokuda aşırı ifade edilen survivin, apoptozis inhibe edici proteinlerdendir. Bu çalışmada Survivin -31 G/C polimorfizmi ile mide kanseri arasındaki ilişki araştırıldı. Gereç ve yöntem: Çalışma Düzce Üniversitesi Araştırma ve Uygulama Hastanesi Patoloji Laboratuvarına gelen mide kanseri tanısı konmuş 46 hasta ve sağlıklı bireylerin oluşturduğu 42 kişilik kontrol grubu ile gerçekleştirildi. Bu bireylerin genotipi Düzce Üniversitesi, Tıp Fakültesi, Tıbbi Genetik Anabilim Dalı Laboratuvarlarında PCR-RFLP yöntemiyle tayin edildi. Bulgular: Hasta grubunda, GG genotipi 16 (% 34,8), GC genotipi 21 (% 45,7) ve CC genotipi ise 9 (% 19,6) olguda saptandı. Kontrol grubunda ise, genotip dağılımı sırasıyla 13 (% 31), 26 (% 61,9) ve 3 (% 7,1) bulundu. Hasta ve kontrol grubu karşılaştırıldığında istatistiksel olarak anlamlı bir fark saptanamadı. Fakat CC genotipine sahip bireylerin mide kanserine yakalanma riskinin GG (OR=1,52) daha fazla risk oluşturduğu bulundu. Sonuç: Bu çalışma bildiğimiz kadarıyla Türk toplumunda mide kanseri ile Survivin -31G/C polimorfizmini araştıran ilk çalışmadır. Elde ettiğimiz sonuçlar hasta ve kontrol gruplarımızın temsil ettiği toplum kesitinde mide kanseri ile Survivin -31 G/C polimorfizmi arasında anlamlı bir ilişki olmadığını göstermekle birlikte CC genotipinin mide kanserine yatkınlık oluşturduğu düşünülebilir.

Keywords

• Polimorfizm, mide kanseri, survivin gen, apoptozis

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