Assessment of glutathione S-transferaseM1 (GSTM1) and its polymorphisms GSTM1 null in the response to treatment with chemotherapy in advanced ovarian carcinoma.

نویسندگان

  • Gilberto Kendi Takeda
  • Daniela Batista Leite
  • Michele Gilvana Junqueira
  • Luiz Augusto Freire Lopes
  • Ismael Dale Cotrim Guerreiro da Silva
  • Fausto Farah Baracat
چکیده

OBJECTIVE To assess if the genotype of the glutathione S-transferase M1 (GSTM1) enzyme and its GSTM1 null polymorphism can influence the response to chemotherapeutic treatment of advanced ovarian cancer. METHODS Case-control study of 112 patients with advanced ovarian cancer submitted to chemotherapy during the period from January 1995 to December 2005. The tissue to study the GSTM1 genotype and its deletion came from surgical staging to treat ovarian cancer. The PCR product generates two distinct genotypes, characterized as positive and null. The response to chemotherapy was evaluated using the World Health Organization (WHO) criteria. Patients were classified as having: a) no response, b) a response. RESULTS The presence of GSTM1 or its GSTM1 null polymorphism did not influence the preoperative chemotherapy response. Among the patients who did respond, 88.9% presented with positive GSTM1 and 11.1% with null GSTM1. Among the patients that did not respond, 85.71% presented with positive GSTM1 and 14.29% with null GSTM1 (p = 0.825). GSTM1 and its GSTM1 null polymorphism had no influence on the postoperative response to chemotherapy. Among the patients who did respond, 80.65% presented with positive GSTM1 and 19.35% with null GSTM1. Among the patients who did not respond, 87.50% presented with positive GSTM1 and 12.5% with the null polymorphism (p = 0.553). CONCLUSION No difference was observed in the response to treatment with chemotherapy in patients with advanced ovarian cancer, as to the GSTM1 genotype compared to its GSTM1 null polymorphism.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

بررسی همزمان پلی مورفیسم های ژن‌های,GSTM11GSTT و ارتباط آن‌ها با مقاومت نسبت به داروهای شیمی‌درمانی در بیماران مبتلابه سرطان مری

Background: Genetic polymorphisms in enzymes involved in carcinogen metabolism have been shown to influence susceptibility to cancer. The glutathione S-transferase (GST) genes are involved in the detoxification of a broad range of toxic substances, so polymorphic deletions of GSTM1 and GSTT1 genes may involve as a risk factor for esophagus carcinoma. The aim of this research was to investigate ...

متن کامل

Glutathione s-transferase M1 and T1 genetic polymorphisms in Iranian patients with glaucoma

Objective(s):Glaucoma is the second leading cause of blindness and it is related to oxidative stress based on numerous studies. Glutathione S-transferases (GSTs) are members of multigenic family, which have important role in cells as an antioxidant. In the present study, we examined the polymorphism of GSTT1 and GSTM1 deletion genotypes (T0M1, T1M0, and T0M0) in 100 Glaucoma patients (41with pr...

متن کامل

Association of glutathione S-transferase M1 and T1 polymorphisms and temperament

Mizaj (Temperament) is one of the basic concepts of Iranian Traditional Medicine (ITM), which has great importance in diagnosis and treatment of diseases, as well as maintaining the ideal healthy state of an individual. However, very little is known about the biological mechanisms of mizaj dependence treatment in practical ITM. This study was aimed to evaluate any association between the mizaj ...

متن کامل

Association of glutathione S-transferase (GST) genetic polymorphisms with treatment outcome of cisplatin-based chemotherapy for advanced non-small cell lung cancer in a Chinese population.

The aim of this study was to evaluate the association of GSTM1 null/present, GSTT1 null/present, and GSTP1 IIe105Val polymorphisms with the chemotherapy response and overall survival of advanced NSCLC. Two hundred and sixty-two patients with histologically confirmed advanced NSCLC (inoperable TNM stages IIIA, IIIB, and IV) were enrolled to this hospital-based study between May 2009 and May 2012...

متن کامل

بررسی پلی‌مورفیسم ژنی ایزوآنزیم‌های GSTM1 و GSTP1 و فعالیت آنزیم گلوتاتیون S-ترانسفراز: مردان نابارور ایرانی

Background: Pi-GST and Mu-GST are subclasses of glutathione S-transferase that present on human sperm surface and play an important role against oxidative stress. Therefore, any defects in the enzyme activity may be associated with male infertility.In this study the polymorphisms of GSTM1 and GSTP1 in association with enzyme activity and sperm parameters were studied. Methods: This case-contro...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Einstein

دوره 9 3  شماره 

صفحات  -

تاریخ انتشار 2011