نوع مقاله : مقاله های پژوهشی
نویسندگان
1 دانشجو، گروه زیست شناسی، دانشکدهی علوم، دانشگاه اصفهان، اصفهان، ایران
2 دانشیار، گروه زیست شناسی، دانشکدهی علوم، دانشگاه اصفهان، اصفهان، ایران
3 استادیار، گروه پرتو درمانی، دانشکدهی پزشکی، دانشگاه علوم پزشکی اصفهان، اصفهان، ایران
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Background: Insulin like growth factor I (IGF-I) is a member of large single-chain polypeptides, similar to proinsulin protein. This gene increases cell growth. The purpose of this study was to investigate polymorphism of Adenosine-Cytosine (CA) in IGF-I gene promoter among breast cancer patients and healthy individuals and its relation to risk of breast cancer.Methods: This study was a case-control study on 100 patients and 100 controls women. DNA was extracted from the blood of study subjects, the sequence were amplified by the technique of Polymerase Chain Reaction (PCR). Thereafter the number and sequence of CA was measured by gel electrophoresis on Polyacrilamid.Finding: The results of this study shown that IGF-I gene allele distribution in Isfahan population varies between 11 and 23 repeats and (CA)19 was the most common allele between patients and controls. Women with sequences larger than 19 were in a greater risk of breast cancer.Conclusion: These findings indicate a direct relationship between the numbers of repetitive sequences of IGF-I gene promoter and increased risk of breast cancer. In other words, increasing the number of CA repeat (greater than 19) located in the promoter gene, increases the risk of breast cancer in women.
کلیدواژهها [English]