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Dos Santos SP, Morissugui SS, Gimenez Martins APD, Fernandes GMDM, Russo A, Galbiatti-Dias ALS, Castanhole-Nunes MMU, Francisco JLE, Pavarino ÉC, Goloni-Bertollo EM. Evaluation of molecular markers GSTM1 and GSTT1 and clinical factors in breast cancer: case-control study and literature review. Xenobiotica 2021; 51:1326-1334. [PMID: 34096444 DOI: 10.1080/00498254.2021.1938291] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The study was conducted to evaluate the frequency of polymorphisms in GSTM1 and GSTT1 genes in patients with breast cancer compared with individuals without history of cancer, and the association of these polymorphisms with clinical/epidemiological parameters.There were evaluated 752 women (219 patients and 533 controls). Molecular analysis was performed by the Polymerase Chain Reaction (PCR). Statistical analysis was used multiple logistic regression and descriptive statistics.Age ≥50 years (OR =3.22, 95% CI =2.30 - 4.51, p <0.001) and alcohol consumption (OR =1.60, 95% CI =1.13 - 2.27, p = 0.008) were associated to the development of breast cancer, while smoking and null genotypes GSTM1 and GSTT1 presented no association. GSTM1 and GSTT1 polymorphisms presented no relationship with the clinical and histopathological parameters or molecular subtypes of breast cancer. Ninety-two percent of tumors were invasive ductal, 66% were grade II, 65% were larger than 2 cm, the stages II (35.3%) and III (31.2%) were the most prevalent, and 47.7% were molecular subtype luminal B.Individuals aged ≥50 years and alcohol consumers have more chance to developing breast cancer. GSTM1 and GSTT1 polymorphisms are not associated to the risk of breast cancer.
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Affiliation(s)
- Stéphanie Piacenti Dos Santos
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil
| | - Sabrina Sayuri Morissugui
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil
| | - Ana Paula D'Alarme Gimenez Martins
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil
| | - Glaucia Maria de Mendonça Fernandes
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil
| | - Anelise Russo
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil
| | - Ana Lívia Silva Galbiatti-Dias
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil
| | | | - José Luis Esteves Francisco
- Gynecology and Obstetrics Department, São José do Rio Preto Medical School Fundation - FAMERP/FUNFARME, São José do Rio Preto/SP, Brazil.,São José do Rio Preto Medical School Fundation - FUNFARME, São José do Rio Preto, SP, Brazil
| | - Érika Cristina Pavarino
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil.,São José do Rio Preto Medical School Fundation - FUNFARME, São José do Rio Preto, SP, Brazil
| | - Eny Maria Goloni-Bertollo
- Molecular Biology: Genetics and Molecular Biology Research Unit, São José do Rio Preto Medical School - FAMERP, São Jose do Rio Preto/SP, Brazil.,São José do Rio Preto Medical School Fundation - FUNFARME, São José do Rio Preto, SP, Brazil
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Raafat N, Ismail K, Hawsawi NM, Saber T, Elsawy WH, Abdulmutaleb T, Raafat A, Gharib AF. Glutathione S transferase T1 gene polymorphism and its promoter methylation are associated with breast cancer susceptibility in Egyptian women. Biotechnol Appl Biochem 2021; 69:526-533. [PMID: 33600611 DOI: 10.1002/bab.2129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Accepted: 02/07/2021] [Indexed: 12/24/2022]
Abstract
BACKGROUND Breast cancer (BC) is one of the leading causes of cancer mortality in women. Glutathione S-transferase (GSTT1) is involved in activation of detoxification reactions and catalysis of chemicals conjugation with glutathione. GSTT1 genotype is a limiting factor for some environmental diseases. Epigenetic changes have an essential role in BC through inappropriate interaction between genomic and environmental risk factors. AIM This study was directed to explore the association of BC risk with GSTT1 genetic variations and its methylation status in Egyptian women. DESIGN AND METHODS This study included 100 healthy women as the control group and 100 patients were clinically and histologically diagnosed with breast cancer. All blood samples were used for genomic DNA extraction. GSTT1 genotyping was accomplished by multiplex PCR and methylation-specific PCR was used to analyze the GSTT1 promoter methylation status. RESULTS Breast cancer patients showed significant incidence of null GSTT1 in relation to controls (p = 0.004). GSTT1 gene promoter methylation status showed significant difference between hypermethylated and unmethylated patients when compared with healthy subjects (p = 0.005). GSTT1 promoter methylation status was not significantly associated with null genotype. There was no significant association between GSTT1-null genotypes and BC stage in cases with or without family history, but for promotor methylation, there was significant association with stage III and IV breast cancer disease. CONCLUSION GSTT1 null genetic variant and promoter hypermethylation in the GSTT region of the gene may be considered as critical risk factors for BC in Egyptian women.
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Affiliation(s)
- Nermin Raafat
- Medical Biochemistry Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Khadiga Ismail
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Nahed M Hawsawi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Taisir Saber
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
| | - Wael H Elsawy
- Department of Clinical Oncology and Nuclear Medicine, Faculty of Medicine, Zagazig University, Egypt
| | - Tariq Abdulmutaleb
- Ministry of Health, King Faisal Medical Complex Alpakistany, Taif, Saudi Arabia
| | - Ahmed Raafat
- General Surgery Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Amal F Gharib
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, Taif University, Taif, Saudi Arabia
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Chang VC, Cotterchio M, Bondy SJ, Kotsopoulos J. Iron intake, oxidative stress‐related genes and breast cancer risk. Int J Cancer 2020; 147:1354-1373. [DOI: 10.1002/ijc.32906] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/21/2019] [Accepted: 01/20/2020] [Indexed: 01/05/2023]
Affiliation(s)
- Vicky C. Chang
- Dalla Lana School of Public Health University of Toronto Toronto ON Canada
- Prevention and Cancer Control Cancer Care Ontario, Ontario Health Toronto ON Canada
| | - Michelle Cotterchio
- Dalla Lana School of Public Health University of Toronto Toronto ON Canada
- Prevention and Cancer Control Cancer Care Ontario, Ontario Health Toronto ON Canada
| | - Susan J. Bondy
- Dalla Lana School of Public Health University of Toronto Toronto ON Canada
| | - Joanne Kotsopoulos
- Dalla Lana School of Public Health University of Toronto Toronto ON Canada
- Women's College Research Institute, Women's College Hospital Toronto ON Canada
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4
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Kalacas NA, Garcia JA, Sy Ortin T, Valdez Jr A, Fellizar A, Ramos MC, Albano PM. GSTM1 and GSTT1 Genetic Polymorphisms and Breast Cancer Risk in Selected Filipino Cases. Asian Pac J Cancer Prev 2019; 20:529-535. [PMID: 30803216 PMCID: PMC6897019 DOI: 10.31557/apjcp.2019.20.2.529] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background: The association of genetic polymorphisms with cancer development has been shown to be race- and tumor site-specific. Thus, this study aimed to determine whether polymorphisms in the GSTM1 and GSTT1 genes are associated with breast cancer among selected Filipinos. Methods: A total of 136 histologically confirmed breast cancer cases were age- and sex-matched with 136 clinically healthy controls. Genomic DNA extracted from blood samples of participants were screened for GSTM1 and GSTT1 genetic polymorphisms by multiplex PCR. Results: The frequency of null genotypes among the cases (GSTM1: n=78; 57.4%; GSTT1: n=61; 44.9%) was not significantly different (p>0.05) from the controls (GSTM1: n=93; 68.4%; GSTT1: n=59; 43.4%). It was also demonstrated that risk for breast cancer was increased in passive smokers carrying the GSTM1 null (OR=2.56; 95% CI=1.38-4.75) or GSTT1 positive (OR=2.00; 95% CI=1.05-3.83) genotypes. Moreover, risk was decreased in alcohol users carrying the GSTT1 null (OR=0.39; 95% CI=0.16-0.97) genotype . Conclusion: This study suggests that variants of GSTM1 and GSTT1 may not be risk factors for breast cancer development among Filipinos. However, the risk may be increased when these genotypes were combined with lifestyle or environmental factors.
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Affiliation(s)
- Noel Angelo Kalacas
- The Graduate School, University of Santo Tomas, Manila, Philippines.,Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines.
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Miao LF, Wang XY, Ye XH, Cui MS, He XF. Combined effects of GSTM1 and GSTT1 polymorphisms on breast cancer risk: A MOOSE-compliant meta-analysis and false-positive report probabilities test. Medicine (Baltimore) 2019; 98:e14333. [PMID: 30732156 PMCID: PMC6380837 DOI: 10.1097/md.0000000000014333] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Many molecular epidemiology studies have reported an association between the combined effects of glutathione S-transferase M1 (GSTM1) and glutathione S-transferase T1 (GSTT1) polymorphisms on breast cancer risk. However, the results have been controversial.A meta-analysis was performed to clarify this issue.Meta-analysis of observational studies in epidemiology guidelines was used. Pooled the crude odds ratios (ORs) and 95% confidence intervals (CIs) were calculated using a random-effects model or fixed-effects model. Several subgroup analyses were conducted by ethnicity, source of control, matching, and menopausal status. In addition, we also performed sensitivity analysis and publication bias. Moreover, a false-positive report probability (FPRP) test was applied to assess positive results.A significantly increased breast cancer risk was observed in overall population (GSTM1 null/GSTT1 present [- +] vs GSTM1 present/GSTT1 present [+ +]: OR = 1.19, 95% CI: 1.03-1.36, GSTM1 null/GSTT1 null [- -] vs + +: OR = 1.63, 95% CI: 1.29-2.06, (- +) + GSTM1 present/GSTT1 null (+ -) vs + +: OR = 1.17, 95% CI: 1.05-1.31, (- +) + (+ -) + (- -) vs + +: OR = 1.27, 95% CI: 1.12-1.44, and - - vs (- +) + (+ -) + (+ +): OR = 1.39, 95% CI: 1.17-1.66) and several subgroup analyses, such as Caucasians, Indians, postmenopausal women, and so on. However, positive results were only considered noteworthy in overall population (- - vs + +: FPRP = 0.150 and (- +) + (+ -) + (- -) vs + +: FPRP = 0.162). Moreover, no significant association was observed when we used the trim and fill method to adjust the pooled data from all populations. Further, none of positive results of sensitivity analysis were considered noteworthy (FPRP >0.2).These positive findings should be interpreted with caution and indicate that an increased breast cancer risk may most likely result from false-positive results, rather than from true associations or biological factors on the combined effects of GSTM1 and GSTT1. Future studies should be based on sample sizes well-powered and attention needs to be paid to study design to further identify this issue.
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Affiliation(s)
- Li-Feng Miao
- Department of Galactophore, Affiliated Heping Hospital, Changzhi Medical College, Shanxi, Changzhi
| | - Xiao-Yan Wang
- Department of Epidemiology and Health Statistics, Basic Medical College of Zhejiang University of Traditional Chinese Medicine
| | - Xiang-Hua Ye
- Department of Radiotherapy, First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou
| | - Meng-Shen Cui
- Department of Galactophore, Affiliated Heping Hospital, Changzhi Medical College, Shanxi, Changzhi
| | - Xiao-Feng He
- Department of Science and Education, Affiliated Heping Hospital, Changzhi Medical College, Shanxi, Changzhi, PR China
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He Q, Wang L, Zhang J, Lu F, Gong W, Pan J, Zhong J, Hu R, Yu M. CYP2E1 and GSTM1 gene polymorphisms, environmental factors, and the susceptibility to lung cancer. J Clin Lab Anal 2018; 32:e22403. [PMID: 29604112 DOI: 10.1002/jcla.22403] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 01/13/2018] [Indexed: 11/11/2022] Open
Abstract
OBJECTIVE To investigate the relationships between the CYP2E1 RsaI polymorphism, GSTM1 polymorphism, and the susceptibility to lung cancer, along with the interactions between environmental factors and these genes. METHODS A case-control study was carried out to explore the independent effect of gene polymorphisms on risk of lung cancer, and the combined effects of gene loci. The stratification analysis of age, sex, smoking, and drinking combined with positive loci was also analyzed, and any interaction was identified. RESULTS The logistic regression analysis showed that there were statistical relationships between the CYP2E1 RsaI TT genotype and lung cancer, GSTM1 (-) and lung cancer. The combined effect's analysis of these 2 loci showed that, with an increase in the number of risk alleles, the risk of lung cancer also increased (supposing 0 risk allele as the reference group). Subjects carrying 3 risk alleles had the highest risk of developing lung cancer with an adjusted OR = 10.38 (95% CI 2.10-51.35). Stratified analysis showed that, in women, nonsmoking subjects, or nondrinking subjects, the combined effects could increase the risk of lung cancer; no heterogeneity was found between these layers except sex. The interaction analysis showed that, supposing the male, GSTM1 (+) genotype as the reference, the female, GSTM1 (-) genotype had a significantly increased risk of lung cancer (OR = 2.17 [1.01-4.70]); when the non-smoking, GSTM1 (+) genotype subjects was the reference group, smoking, GSTM1 (+) genotype subjects and smoking, GSTM1 (-) genotype subjects had significantly higher risk of lung cancer (OR = 2.00 [1.01-3.96], OR = 2.89 [1.28-6.54]). CONCLUSION CYP2E1 RsaI TT genotype was a protective factor against the development of lung cancer, while GSTM1 (-) genotype was a risk factor for lung cancer. Increases in the number of the risk alleles also increased lung cancer risk. GSTM1 (-) genotype, sex, and smoking status might interact in the incidence of lung cancer.
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Affiliation(s)
- Qingfang He
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Lixin Wang
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Jie Zhang
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Feng Lu
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Weiwei Gong
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Jin Pan
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Jieming Zhong
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Ruying Hu
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
| | - Min Yu
- Zhejiang Provincial Center for Disease Prevention and Control, Hangzhou, China
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7
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Song Z, Shao C, Feng C, Lu Y, Gao Y, Dong C. Association of glutathione S-transferase T1, M1, and P1 polymorphisms in the breast cancer risk: a meta-analysis. Ther Clin Risk Manag 2016; 12:763-9. [PMID: 27274261 PMCID: PMC4869650 DOI: 10.2147/tcrm.s104339] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Several case-control studies investigating the relationship between genetic polymorphisms of glutathione S-transferase (GST) M1, GSTT1, and GSTP1 (rs1695) and the risk of breast cancer have reported contradictory results. We therefore performed a meta-analysis to clarify this issue. MATERIALS AND METHODS An updated meta-analysis using PubMed and Web of Knowledge databases for the eligible case-control studies was performed. Random- or fixed-effects model was used. RESULTS A total of 10,067 cancer cases and 12,276 controls in 41 independent case-control studies from 19 articles were included in this meta-analysis. Significant increase in risk of breast cancer for Asians was found in GSTM1-null genotype (P=0.012, odds ratio [OR] =1.17, 95% confidence interval [CI] =1.04-1.32) and GSTT1-null genotype (P=0.039, OR =1.19, 95% CI =1.01-1.41). In addition, our results showed that the GSTP1 (rs1695) polymorphisms can significantly increase the risk among Caucasians (P=0.042, OR =1.16, 95% CI =1.01-1.34). Sensitivity analysis and publication bias further confirmed the dependability of the results in this meta-analysis. CONCLUSION Our results demonstrate that both GSTM1- and GSTT1-null polymorphisms are associated with an increased risk of breast cancer in Asians and that GSTP1 Val105Ile (rs1695) polymorphism is associated with an increased breast cancer risk in Caucasians.
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Affiliation(s)
- Zhiwang Song
- Department of Oncology, Shanghai East Hospital, Tongji University, Shanghai, People's Republic of China
| | - Chuan Shao
- Department of Neurosurgery, The Second Clinical Medical College of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Chan Feng
- Department of Oncology, Shanghai East Hospital, Tongji University, Shanghai, People's Republic of China
| | - Yonglin Lu
- Department of Oncology, Shanghai East Hospital, Tongji University, Shanghai, People's Republic of China
| | - Yong Gao
- Department of Oncology, Shanghai East Hospital, Tongji University, Shanghai, People's Republic of China
| | - Chunyan Dong
- Department of Oncology, Shanghai East Hospital, Tongji University, Shanghai, People's Republic of China
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Abstract
Diet may play a role in both promoting and inhibiting human breast cancer development. In this review, nutritional risk factors such as consumption of dietary fat, meat, fiber, and alcohol, and intake of phytoestrogen, vitamin D, iron, and folate associated with breast cancer are reviewed. These nutritional factors have a variety of associations with breast cancer risk. Type of fat consumed has different effects on risk of breast cancer: consumption of meat is associated with heterocyclic amine (HCA) exposure; different types of plant fiber have various effects on breast cancer risk; alcohol consumption may increase the risk of breast cancer by producing acetaldehyde and reactive oxygen species (ROS); intake of phytoestrogen may reduce risk of breast cancer through genomic and non-genomic action; vitamin D can reduce the risk of breast cancer by inhibiting the process of cancer invasion and metastasis; intake of dietary iron may lead to oxidative stress, DNA damage, and lipid peroxidation; and lower intake of folate may be linked to a higher risk of breast cancer.
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Chandran U, Zirpoli G, Ciupak G, McCann SE, Gong Z, Pawlish K, Lin Y, Demissie K, Ambrosone CB, Bandera EV. Racial disparities in red meat and poultry intake and breast cancer risk. Cancer Causes Control 2013; 24:2217-29. [PMID: 24091794 DOI: 10.1007/s10552-013-0299-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2013] [Accepted: 09/26/2013] [Indexed: 12/21/2022]
Abstract
PURPOSE Research on the role of red meat and poultry consumption in breast carcinogenesis is inconclusive, but the evidence in African-American (AA) women is lacking. The association between consuming meat and breast cancer risk was examined in the Women's Circle of Health Study involving 803 AA cases, 889 AA controls, 755 Caucasian cases, and 701 Caucasian controls. METHODS Dietary information was collected using a Food Frequency Questionnaire. Odds ratios (OR) and 95 % confidence intervals (CI) were obtained from logistic regression models adjusting for potential covariates. RESULTS Comparing the fourth versus the first quartiles, among Caucasian women, processed meat (OR = 1.48; 95 % CI 1.07-2.04), unprocessed red meat (OR = 1.40; 95 % CI 1.01-1.94), and poultry intakes (OR = 1.42; 95 % CI 1.01-1.99) increased breast cancer risk. Risk associated with poultry intake was more dominant in premenopausal women (OR = 2.33; 95 % CI 1.44-3.77) and for women with ER- tumors (OR = 2.55; 95 % CI 1.29-5.03) in the Caucasian group. Associations in AA women were mostly null except for a significant increased risk trend with processed meat consumption for ER+ tumors (OR = 1.36; 95 % CI 0.94-1.97, p trend = 0.04). CONCLUSIONS Overall, associations between breast cancer risk and consumption of red meat and poultry were of different magnitude in AA and Caucasian women, with further differences noted by menopausal and hormone receptor status in Caucasian women. This is the first study to examine racial differences in meat and breast cancer risk and represents some of the first evidence in AA women.
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Affiliation(s)
- Urmila Chandran
- Rutgers Cancer Institute of New Jersey, Robert Wood Johnson Medical School, 195 Little Albany St, Room 5549-10, New Brunswick, NJ, 08903, USA,
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10
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Aguiar ESD, Giacomazzi J, Schmidt AV, Bock H, Saraiva-Pereira ML, Schuler-Faccini L, Duarte Filho D, Santos PACD, Giugliani R, Caleffi M, Camey SA, Ashton-Prolla P. GSTM1, GSTT1, and GSTP1 polymorphisms, breast cancer risk factors and mammographic density in women submitted to breast cancer screening. REVISTA BRASILEIRA DE EPIDEMIOLOGIA 2012; 15:246-55. [DOI: 10.1590/s1415-790x2012000200002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Accepted: 05/27/2012] [Indexed: 01/07/2023] Open
Abstract
Genetic polymorphisms in genes related to the metabolism of xenobiotics, such as genes of the glutathione S-transferases (GSTM1, GSTT1, and GSTP1) superfamily have been associated with an increased risk for breast cancer (BC). Considering the high incidence of BC in the city of Porto Alegre in southern Brazil, the purpose of this study was to characterize genotypic and allelic frequencies of polymorphisms in GSTM1, GSTT1, and GSTP1, and correlate these molecular findings with established risk factors for breast cancer including mammographic density, in a sample of 750 asymptomatic women undergoing mammographic screening. Molecular tests were performed using the multiplex polymerase chain reaction (PCR) for GSTM1 and GSTT1, and quantitative PCR for GSTP1 polymorphisms. Overall, the frequencies of GSTM1 and GSTT1 null genotypes were 45% and 21%, respectively. For GSTP1 polymorphism, genotypic frequencies were 44% for the Ile/Ile genotype, 44% for the Ile/Val genotype, and 12% for Val/Val genotype, with an allelic frequency of 66% for the wild type allele in this population, similar to results of previous international publications. There was a statistically significant association between the combined GSTM1 and GSTT1 null genotypes (M-/T-) and mammographic density in post menopausal women (p = 0.031). When the GSTT1 null (T-) genotype was analyzed isolated, the association with mammographic density in post menopausal women and in the overall sample was also statistically significant (p = 0.023 and p = 0.027, respectively). These findings suggest an association of GSTM1 and GSTT1 null genotypes with mammographic density.
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Affiliation(s)
| | - Juliana Giacomazzi
- Universidade Federal do Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Brazil; Associação Hospitalar Moinhos de Vento, Brazil
| | | | - Hugo Bock
- Hospital de Clínicas de Porto Alegre, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
| | - Maria Luiza Saraiva-Pereira
- Hospital de Clínicas de Porto Alegre, Brazil; Hospital de Clínicas de Porto Alegre, Brazil; Universidade Federal do Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
| | - Lavínia Schuler-Faccini
- Hospital de Clínicas de Porto Alegre, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
| | | | | | - Roberto Giugliani
- Universidade Federal do Rio Grande do Sul, Brazil; Hospital de Clínicas de Porto Alegre, Brazil; Hospital de Clínicas de Porto Alegre, Brazil; Universidade Federal do Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
| | | | | | - Patrícia Ashton-Prolla
- Universidade Federal do Rio Grande do Sul, Brazil; Associação Hospitalar Moinhos de Vento, Brazil; Hospital de Clínicas de Porto Alegre, Brazil; Universidade Federal do Rio Grande do Sul, Brazil
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Chen XX, Zhao RP, Qiu LX, Yuan H, Mao C, Hu XC, Guo XM. Glutathione S-transferase T1 polymorphism is associated with breast cancer susceptibility. Cytokine 2011; 56:477-80. [DOI: 10.1016/j.cyto.2011.06.008] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Accepted: 06/10/2011] [Indexed: 01/10/2023]
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Abstract
High intake of meat, particularly red and processed meat, has been associated with an increased risk of a number of common cancers such as breast, colorectum, and prostate in many epidemiological studies. Heterocyclic amines (HCAs) are a group of mutagenic compounds found in cooked meats, particularly well-done meats. HCAs are some of most potent mutagens detected using the Ames/salmonella tests and have been clearly shown to induce tumors in experimental animal models. Over the past 10 years, an increasing number of epidemiological studies have evaluated the association of well-done meat intake and meat carcinogen exposure with cancer risk. The results from these epidemiologic studies were evaluated and summarized in this review. The majority of these studies have shown that high intake of well-done meat and high exposure to meat carcinogens, particularly HCAs, may increase the risk of human cancer.
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Affiliation(s)
- Wei Zheng
- Vanderbilt-Ingram Cancer Center, Vanderbilt University School of Medicine, Nashville, TN 37203-1738, USA.
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13
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Qiu LX, Yuan H, Yu KD, Mao C, Chen B, Zhan P, Xue K, Zhang J, Hu XC. Glutathione S-transferase M1 polymorphism and breast cancer susceptibility: a meta-analysis involving 46,281 subjects. Breast Cancer Res Treat 2009; 121:703-8. [PMID: 19936916 DOI: 10.1007/s10549-009-0636-2] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2009] [Accepted: 11/04/2009] [Indexed: 01/01/2023]
Abstract
Published data on the association between present/null polymorphism of glutathione S-transferase M1 (GSTM1) and breast cancer risk are inconclusive. To derive a more precise estimation of the relationship, a meta-analysis was performed. Medline, PubMed, Embase, and Web of Science were searched. Crude ORs with 95% CIs were used to assess the strength of association between the GSTM1 present/null polymorphism and breast cancer risk. The pooled ORs were performed for null versus present genotype. A total of 59 studies including 20,993 cases and 25,288 controls were involved in this meta-analysis. Overall, significantly elevated breast cancer risk was associated with null genotype when all studies were pooled into the meta-analysis (OR = 1.10, 95% CI = 1.04-1.16). In the subgroup analysis by ethnicity, significantly increased risks were found for Caucasians (OR = 1.05, 95% CI = 1.00-1.10) and Asians (OR = 1.21, 95% CI = 1.08-1.35). When stratified by population-based studies or hospital-based studies, statistically significantly elevated risks were found among population-based studies (OR = 1.11, 95% CI = 1.03-1.20). In the subgroup analysis by menopausal status, statistically significantly increased risks were found among postmenopausal women (OR = 1.15, 95% CI = 1.04-1.28). In conclusion, this meta-analysis suggests that the GSTM1 null genotype is a low-penetrant risk factor for developing breast cancer.
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Affiliation(s)
- Li-Xin Qiu
- Department of Medical Oncology, Cancer Hospital, Fudan University, Shanghai, China
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14
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Sergentanis TN, Economopoulos KP. GSTT1 and GSTP1 polymorphisms and breast cancer risk: a meta-analysis. Breast Cancer Res Treat 2009; 121:195-202. [PMID: 19760040 DOI: 10.1007/s10549-009-0520-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2009] [Accepted: 08/18/2009] [Indexed: 12/14/2022]
Abstract
Cytosolic glutathione S-transferase comprises multiple isoenzymes; studies have principally examined mu-1 (GSTM1: null/present), theta-1 (GSTT1: null/present) and pi-1 (GSTP1 Ile105Val) gene polymorphisms concerning breast cancer risk. Regarding GSTT1 and GSTP1 polymorphisms, studies remain controversial and no recent meta-analysis has appeared. This meta-analysis aims to examine whether GSTT1 and GSTP1 polymorphisms are associated with breast cancer risk. Separate analyses were performed on Chinese and non-Chinese populations, in an attempt to investigate race-specific effects. Eligible articles were identified by a search of MEDLINE bibliographic database for the period up to August 2009. Regarding GSTT1 null/present genotype, 41 case-control studies were eligible (16,589 breast cancer cases and 19,995 controls); 30 case-control studies were eligible for GSTP1 Ile105Val (16,908 cases and 20,016 controls). Pooled odds ratios (ORs) were appropriately derived from fixed-effects or random-effects models. At the overall analysis, the null GSTT1 genotype was associated with elevated breast cancer risk (pooled OR = 1.114, 95% CI: 1.035-1.199, random effects). However, the association seemed confined to non-Chinese populations (33 studies, pooled OR = 1.128, 95% CI: 1.042-1.221, random effects), given that the association was not significant in the subset of Chinese studies (eight studies, pooled OR = 1.061, 95% CI: 0.875-1.286, random effects). Regarding GSTP1 Ile105Val, no statistically significant associations were detected in non-Chinese populations (25 studies). On the other hand, the GG genotype was associated with increased breast cancer risk in Chinese populations (five studies, pooled OR = 1.297, 95% CI: 1.023-1.645, fixed effects); accordingly, the recessive model yielded statistically significant results (pooled OR = 1.273, 95% CI: 1.006-1.610, fixed effects). In conclusion, polymorphisms of both GSTT1 and GSTP1 genes seem associated with elevated breast cancer risk in a race-specific manner. Given the small number of Chinese studies, the finding on GSTP1 Ile105Val merits further investigation.
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McCarty KM, Santella RM, Steck SE, Cleveland RJ, Ahn J, Ambrosone CB, North K, Sagiv SK, Eng SM, Teitelbaum SL, Neugut AI, Gammon MD. PAH-DNA adducts, cigarette smoking, GST polymorphisms, and breast cancer risk. ENVIRONMENTAL HEALTH PERSPECTIVES 2009; 117:552-8. [PMID: 19440493 PMCID: PMC2679598 DOI: 10.1289/ehp.0800119] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/21/2008] [Accepted: 12/08/2008] [Indexed: 05/21/2023]
Abstract
BACKGROUND Polycyclic aromatic hydrocarbons (PAHs) may increase breast cancer risk, and the association may be modified by inherited differences in deactivation of PAH intermediates by glutathione S-transferases (GSTs). Few breast cancer studies have investigated the joint effects of multiple GSTs and a PAH biomarker. OBJECTIVE We estimated the breast cancer risk associated with multiple polymorphisms in the GST gene (GSTA1, GSTM1, GSTP1, and GSTT1) and the interaction with PAH-DNA adducts and cigarette smoking. METHODS We conducted unconditional logistic regression using data from a population-based sample of women (cases/controls, respectively): GST polymorphisms were genotyped using polymerase chain reaction and matrix-assisted laser desorption/ionization time-of-flight assays (n = 926 of 916), PAH-DNA adduct blood levels were measured by competitive enzyme-linked immunosorbent assay (n = 873 of 941), and smoking status was assessed by in-person questionnaires (n = 943 of 973). RESULTS Odds ratios for joint effects on breast cancer risk among women with at least three variant alleles were 1.56 [95% confidence interval (CI), 1.13-2.16] for detectable PAH-DNA adducts and 0.93 (95% CI, 0.56-1.56) for no detectable adducts; corresponding odds ratios for three or more variants were 1.18 (95% CI, 0.82-1.69) for ever smokers and 1.44 (95% CI, 0.97-2.14) for never smokers. Neither interaction was statistically significant (p = 0.43 and 0.62, respectively). CONCLUSION We found little statistical evidence that PAHs interacted with GSTT1, GSTM1, GSTP1, and GSTA1 polymorphisms to further increase breast cancer risk.
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Affiliation(s)
- Kathleen M McCarty
- Department of Epidemiology, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
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16
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Cardoso Filho C, Lourenço G, Shinzato JY, Zeferino LC, Ferreira Costa F, Passos Lima CS, Costa Gurgel MS. Clinical and pathological implications of GSTM1 and GSTT1 gene deletions in sporadic breast cancer. Oncol Rev 2008. [DOI: 10.1007/s12156-008-0054-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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17
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Meat consumption, N-acetyl transferase 1 and 2 polymorphism and risk of breast cancer in Danish postmenopausal women. Eur J Cancer Prev 2008; 17:39-47. [DOI: 10.1097/cej.0b013e32809b4cdd] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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18
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Alaejos MS, Pino V, Afonso AM. Metabolism and toxicology of heterocyclic aromatic amines when consumed in diet: Influence of the genetic susceptibility to develop human cancer. A review. Food Res Int 2008. [DOI: 10.1016/j.foodres.2008.02.001] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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Russo J, Balogh GA, Russo IH. Full-term pregnancy induces a specific genomic signature in the human breast. Cancer Epidemiol Biomarkers Prev 2008; 17:51-66. [PMID: 18199711 DOI: 10.1158/1055-9965.epi-07-0678] [Citation(s) in RCA: 88] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Breast cancer risk has traditionally been linked to nulliparity or late first full-term pregnancy, whereas young age at first childbirth, multiparity, and breast-feeding are associated with a reduced risk. Early pregnancy confers protection by inducing breast differentiation, which imprints a specific and permanent genomic signature in experimental rodent models. For testing whether the same phenomenon was detectable in the atrophic breast of postmenopausal parous women, we designed a case-control study for the analysis of the gene expression profile of RNA extracted from epithelial cells microdissected from normal breast tissues obtained from 18 parous and 7 nulliparous women free of breast pathology (controls), and 41 parous and 8 nulliparous women with history of breast cancer (cases). RNA was hybridized to cDNA glass microarrays containing 40,000 genes; arrays were scanned and the images were analyzed using ImaGene software version 4.2. Normalization and statistical analysis were carried out using Linear Models for Microarrays and GeneSight software for hierarchical clustering. The parous control group contained 2,541 gene sequences representing 18 biological processes that were differentially expressed in comparison with the other three groups. Hierarchical clustering of these genes revealed that the combined parity/absence of breast cancer data generated a distinct genomic profile that differed from those of the breast cancer groups, irrespective of parity history, and from the nulliparous cancer-free group, which has been traditionally identified as a high-risk group. The signature that identifies those women in whom parity has been protective will serve as a molecular biomarker of differentiation for evaluating the potential use of preventive agents.
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Affiliation(s)
- Jose Russo
- Breast Cancer Research Laboratory, Fox Chase Cancer Center, 333 Cottman Avenue, Philadelphia, PA 19111, USA.
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20
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Nutrition and breast cancer among sporadic cases and gene mutation carriers: An overview. ACTA ACUST UNITED AC 2008; 32:52-64. [DOI: 10.1016/j.cdp.2008.01.005] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/14/2008] [Indexed: 11/22/2022]
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21
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Sakoda LC, Blackston CR, Xue K, Doherty JA, Ray RM, Lin MG, Stalsberg H, Gao DL, Feng Z, Thomas DB, Chen C. Glutathione S-transferase M1 and P1 polymorphisms and risk of breast cancer and fibrocystic breast conditions in Chinese women. Breast Cancer Res Treat 2007; 109:143-55. [PMID: 17624589 PMCID: PMC2741390 DOI: 10.1007/s10549-007-9633-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2007] [Accepted: 05/24/2007] [Indexed: 12/20/2022]
Abstract
Enzymes encoded by the glutathione S-tranferase mu 1 (GSTM1) and pi 1 (GSTP1) genes, which are expressed in breast tissue, catalyze the detoxification of endogenous and exogenous electrophiles. Reduced enzyme activity, due to carriage of the GSTM1 deletion or the GSTP1 Ile105Val Val allele, may therefore affect susceptibility to breast cancer and related conditions. In a case-control study of Chinese women, we examined whether these polymorphisms were associated with risk of breast cancer and fibrocystic breast conditions. Women diagnosed with breast cancer (n=615) or fibrocystic breast conditions (n=467) were compared to women without clinical breast disease (n=878). We also examined whether these associations differed by menopausal status or by presence of proliferation in the extra-tumoral epithelium among women with breast cancer and in lesions among women with fibrocystic conditions. No overall association of either GST polymorphism with risk of breast cancer or fibrocystic breast conditions was observed. There was some evidence of slightly elevated cancer risk associated with carriage of the GSTM1 null genotype and at least one GSTP1 105-Val allele (OR=1.33, 95% CI, 0.99-1.80), compared to carriage of the GSTM1 non-null and GSTP1 Ile/Ile genotypes. This relationship was stronger in women who had breast cancer with extra-tumoral tissue proliferation (OR=1.77, 95% CI, 1.03-3.04). Our results suggest that GSTM1 and GSTP1 genotypes do not individually influence susceptibility to breast cancer or fibrocystic breast conditions. The observed increased risk of breast cancer associated with joint carriage of the GSTM1 null genotype and GSTP1 105-Val allele needs confirmation in other studies.
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Affiliation(s)
- Lori C. Sakoda
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Christie R. Blackston
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Kan Xue
- Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jennifer A. Doherty
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Roberta M. Ray
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Ming Gang Lin
- Program in Cancer Biology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Helge Stalsberg
- Institute of Medical Biology, University of Tromsø, Tromsø, Norway
| | - Dao Li Gao
- Department of Epidemiology, Zhongshan Hospital Cancer Center, Fudan University, Shanghai, China
| | - Ziding Feng
- Program in Biostatistics and Bioinformatics, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - David B. Thomas
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - Chu Chen
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
- Department of Epidemiology, University of Washington, Seattle, WA, USA
- Correspondence to: Chu Chen, Ph.D., Program in Epidemiology, Fred Hutchinson Cancer Research Center, Mailstop M5-C800, P.O. Box 19024, Seattle, WA 98109-1024, USA. Phone: 206-667-6644, Fax: 206-667-2537. E-mail:
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22
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Gago-Dominguez M, Jiang X, Castelao JE. Lipid peroxidation, oxidative stress genes and dietary factors in breast cancer protection: a hypothesis. Breast Cancer Res 2007; 9:201. [PMID: 17224037 PMCID: PMC1851400 DOI: 10.1186/bcr1628] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
We have recently proposed that lipid peroxidation may be a common mechanistic pathway by which obesity and hypertension lead to increased renal cell cancer risk. During this exercise, we noted a risk factor swap between breast and kidney cancer (oophorectomy and increased parity, detrimental for kidney, beneficial for breast; high blood pressure, detrimental for kidney, beneficial for breast when it occurs during pregnancy; alcohol, beneficial for kidney, detrimental for breast, and so on). We have subsequently proposed the hypothesis that lipid peroxidation represents a protective mechanism in breast cancer, and reviewed the evidence of the role of lipid peroxidation on established hormonal and non-hormonal factors for breast cancer. Here, we review the evidence in support of lipid peroxidation playing a role in the relationships between dietary factors and breast cancer. Available evidence implicates increased lipid peroxidation products in the anti-carcinogenic effect of suspected protective factors for breast cancer, including soy, marine n-3 fatty acids, green tea, isothiocyanates, and vitamin D and calcium. We also review the epidemiological evidence supporting a modifying effect of oxidative stress genes in dietary factor-breast cancer relationships.
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Affiliation(s)
- Manuela Gago-Dominguez
- USC/Norris Comprehensive Cancer Center, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California 90033-0800, USA
| | - Xuejuan Jiang
- USC/Norris Comprehensive Cancer Center, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California 90033-0800, USA
| | - J Esteban Castelao
- USC/Norris Comprehensive Cancer Center, Department of Preventive Medicine, Keck School of Medicine of the University of Southern California, Los Angeles, California 90033-0800, USA
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23
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Terry PD, Goodman M. Is the association between cigarette smoking and breast cancer modified by genotype? A review of epidemiologic studies and meta-analysis. Cancer Epidemiol Biomarkers Prev 2006; 15:602-11. [PMID: 16614098 DOI: 10.1158/1055-9965.epi-05-0853] [Citation(s) in RCA: 71] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Epidemiologic studies have examined the association between cigarette smoking and breast cancer risk according to genotype with increasing frequency, commensurate with the growing awareness of the roles genes play in detoxifying or activating chemicals found in cigarette smoke and in preventing or repairing the damage caused by those compounds. To date, approximately 50 epidemiologic studies have examined the association between smoking and breast cancer risk according to variation in genes related to carcinogen metabolism, modulation of oxidative damage, and DNA repair. Some of the findings presented here suggest possible effect modification by genotype. In particular, 14 epidemiologic studies have tended to show positive associations with long-term smoking among NAT2 slow acetylators, especially among postmenopausal women. Summary analyses produced overall meta-relative risk (RR) estimates for smoking of 1.2 [95% confidence interval (95% CI), 1.0-1.5] for rapid acetylators and 1.5 (95% CI, 1.2-1.8) for slow acetylators. After stratification by menopausal status, the meta-RR for postmenopausal slow acetylators was 2.4 (95% CI, 1.7-3.3), whereas similar analyses for the other categories showed no association. In addition, summary analyses produced meta-RRs for smoking of 1.1 (95% CI, 0.8-1.4) when GSTM1 was present and 1.5 (95% CI, 1.1-2.1) when the gene was deleted. Overall, however, interpretation of the available literature is complicated by methodologic limitations, including small sample sizes, varying definitions of smoking, and difficulties involving single nucleotide polymorphism selection, which likely have contributed to the inconsistent findings. These methodologic issues should be addressed in future studies to help clarify the association between smoking and breast cancer.
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Affiliation(s)
- Paul D Terry
- Department of Epidemiology, Emory University School of Public Health, Atlanta, GA 30322, USA.
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24
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Wu SH, Tsai SM, Hou MF, Lin HS, Hou LA, Ma H, Lin JT, Yeh FL, Tsai LY. Interaction of genetic polymorphisms in cytochrome P450 2E1 and glutathione S-transferase M1 to breast cancer in Taiwanese woman without smoking and drinking habits. Breast Cancer Res Treat 2006; 100:93-8. [PMID: 16758119 DOI: 10.1007/s10549-006-9226-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2006] [Accepted: 03/11/2006] [Indexed: 10/24/2022]
Abstract
P450 (CYP) and glutathione S-transferase (GST) are involved in the activation and detoxification of many potential carcinogens. Although, the interaction between environmental exposure and genetic polymorphisms of cytochrome P450 2E1 (CYP2E1) and glutathione S-transferase M1 (GSTM1) in breast cancer has been assessed, the gene-gene interactions between CYP2E1 and GSTM1 related to breast cancer have not been focused on and reported. We conducted a hospital-based case-control study to investigate whether the genetic interaction effects of CYP2E1 and GSTM1 modify the risk of developing breast cancer independent of the effect of cigarette smoking and alcohol consumption. Individuals with the C2/C2 genotype of CYP2E1 had a lower risk (OR = 0.24, 95% CI = 0.08-0.74) when compared with those with the C1/C1 genotype. However, there was no significant difference (OR = 1.05, 95% CI = 0.73-1.50) in the GSTM1 genotype frequency between the cases with breast cancer and that of the controls. When individuals with the genotype of C1/C1 or C1/C2 of CYP2E1 and the wild-type of GSTM1 were compared with those of C2/C2 of CYP2E1 and the null-type of GSTM1 however, we found a significantly increased risk (OR = 3.50, 95% CI = 1.01-16.55) in the breast cancer patients. Our findings indicated a gene-gene interaction between CYP2E1 and GSTM1 was accessible to developing breast cancer in Taiwanese women without the habits of cigarette smoking and alcohol consumption even though independent effects of CYP2E1 and GSTM1 were weak or non-significant and suggest that environmental carcinogen besides cigarette and alcohol consumption could induce breast cancer.
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Affiliation(s)
- Szu-Hsien Wu
- Division of Plastic Surgery, Department of Surgery, Taipei Veterans General Hospital, Taipei, Taiwan
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25
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Sreenath AS, Kumar KR, Reddy GV, Sreedevi B, Praveen D, Monika S, Sudha S, Reddy MG, Reddanna P. Evidence for the association of synaptotagmin with glutathione S-transferases: implications for a novel function in human breast cancer. Clin Biochem 2005; 38:436-43. [PMID: 15820774 DOI: 10.1016/j.clinbiochem.2005.01.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2004] [Revised: 01/04/2005] [Accepted: 01/17/2005] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To analyze the pattern of changes in GSTs in cancerous and adjacent non-cancerous tissues obtained from breast cancer patients undergoing surgery. DESIGN AND METHODS Cytosolic GST purification, assay of GST, protein expression levels, and GST-synaptotagmin association were analyzed using standard biochemical techniques like GSH-affinity purification, spectrophotometry, SDS-PAGE, Western blots, and matrix-assisted laser desorption and ionization-time of flight (MALDI-TOF). RESULTS GST activity in cancerous tissues (0.26 U/mg protein) was significantly higher (P < 0.05) as compared to those from adjacent non-cancerous tissues (0.14 U/mg protein) of breast cancer patients. Further analysis of GST subunits on SDS-PAGE and Western blots using class-specific GST antibodies revealed significant elevation in GST-pi levels in cancer tissues with no appreciable changes in GST-alpha and GST-mu. Along with the elevation of GST-pi levels, high molecular weight proteins (approximately 70 kDa) cross reacting with GST antibodies were detected only in surgically resected tumor biopsies but not in the non-cancerous tissues adjacent to the tumor. Based on MALDI-TOF analysis, the high molecular weight band was identified as synaptotagmin V bound to GST-M1 with 47% sequence coverage after processing on an MS-FIT search engine. CONCLUSIONS Our results suggest a novel putative functional role for the GST-synaptotagmin complex in human breast cancers. As this association of GST M1-synaptotagmin was not seen in adjacent non-cancerous tissues, this can be used as a marker for breast cancers.
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Affiliation(s)
- A S Sreenath
- Department of Animal Sciences, School of Life Sciences, University of Hyderabad, Hyderabad 500046, India
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26
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Knize MG, Felton JS. Formation and Human Risk of Carcinogenic Heterocyclic Amines Formed from Natural Precursors in Meat. Nutr Rev 2005; 63:158-65. [PMID: 15971410 DOI: 10.1111/j.1753-4887.2005.tb00133.x] [Citation(s) in RCA: 119] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
Abstract
A group of heterocyclic amines that are mutagens and rodent carcinogens form when meat is cooked to medium and well-done states. The precursors of these compounds are natural meat components: creatinine, amino acids, and sugars. Defined model systems of dry-heated precursors mimic the amounts and proportions of heterocyclic amines found in meat. Results from model systems and cooking experiments suggest ways to reduce their formation and, thus, reduce human intake. Human cancer epidemiology studies related to the consumption of well-done meat products are listed and compared in this review.
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Affiliation(s)
- Mark G Knize
- Biosciences Directorate, University of California, Lawrence Livermore National Laboratory 7000 East Avenue, Livermore, CA 94550, USA
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27
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Abstract
Postmenopausal women in Western societies are conscious of breast cancer as a potential cause of death and ill health, which they wish to avoid with the advice of their doctors. Yet many factors that predispose women to the development of cancer will have been laid down before the menopause, in their genetic makeup or during their adolescent years. Even in middle age it is important to take account of the intrinsic level of risk, and to give women advice tailored to their own individual risk level. This results from their family history, previous diseases such as benign breast disease, and previous treatment for breast cancer or Hodgkin's disease. For those at the highest level of risk, strategies will include regular screening, prophylactic mastectomy, and the use of chemoprevention agents, such as tamoxifen. These women should avoid hormone replacement therapy (HRT) and control their menopausal symptoms and osteoporosis through the use of other agents now available - venlafaxine for menopausal symptoms and bisphosphonates for osteoporosis. Raloxifene is an agent under trial that may be valuable for breast cancer control as well as for osteoporosis. Women at standard population risk will require less robust preventive strategies, which will include screening and lifestyle modification. Their decisions regarding HRT should now be modified by recent evidence of associated risks. Recent studies show that tibolone causes less mammographic density and has a lower relative risk of breast cancer than combined estrogen/progestogen preparations. There is limited evidence that controlling obesity, participating in exercise and adopting a diet low in fats and high in fruit and vegetables will alter risk at this age. These precautions will, however, reduce the risk of other diseases common in this age group, such as hypertension, heart disease, stroke, and type 2 diabetes mellitus. Alcohol, even in small amounts, is a risk factor for breast cancer. Given the cardioprotective effect of moderate alcohol intake, advice on alcohol must reflect the individual relative risk of cardiovascular disease and breast cancer. Personal risk assessment is relevant for all women. Screening and a healthy lifestyle are worthwhile approaches for all, with the more aggressive approaches such as chemoprevention and prophylactic surgery reserved for those who have substantially elevated levels of risk. Once the menopause has passed, screening is probably the most effective evidence-based tool for breast cancer control by early diagnosis.
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28
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Abstract
Relationships between dietary components and cancer risk are often unclear, and the results from epidemiologic studies are inconsistent. While some inconsistencies could be due to study design issues, we propose that genetic heterogeneity of study populations could mask associations. In this report, we review the literature regarding meat consumption and risk of colon, breast, and prostate cancers, particularly in relation to phenotypes and genotypes for enzymes that metabolize food-borne promutagens. The role of consumption of fruits and vegetables, as well as the role of genetic variants in oxidative stress genes, in the risk of breast cancer are also discussed.
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Affiliation(s)
- Susan A Nowell
- Department of Epidemiology, Roswell Park Cancer Institute, Elm Street, Buffalo, NY 14263, USA
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29
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Vogl FD, Taioli E, Maugard C, Zheng W, Ribeiro Pinto LF, Ambrosone C, Parl FF, Nedelcheva-Kristensen V, Rebbeck TR, Brennan P, Boffetta P. Glutathione S-transferases M1, T1, and P1 and Breast Cancer: A Pooled Analysis. Cancer Epidemiol Biomarkers Prev 2004. [DOI: 10.1158/1055-9965.1473.13.9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Abstract
The glutathione S-transferase (GST) genes are involved in the metabolism of various carcinogens. Deletion polymorphisms in the genes GSTM1 and GSTT1 and a base transition polymorphism at codon 105 (Ile→Val) in GSTP1 were investigated in relation to breast cancer risk. Tobacco smoking and reproductive factors were examined as potential effect modifiers. Individual data from seven case-control studies were pooled within the International Collaborative Study on Genetic Susceptibility to Environmental Carcinogens. To measure the effect of GSTs on breast cancer risk, odds ratios and 95% confidence intervals were computed adjusting for study center and age. The modifying effect was investigated by stratification on variables of smoking habits and reproductive history. A total of 2,048 cases with breast cancer and 1,969 controls were analyzed. The relative odds ratio (95% confidence interval) of breast cancer was 0.98 (0.86–1.12) with the GSTM1 null, 1.11 (0.87–1.41) with the GSTT1 null, 1.01 (0.79–1.28) with GSTP1 heterozygous mutants, and 0.93 (0.62–1.38) with GSTP1 homozygous mutants. Stratification by smoking or reproductive factors did not reveal a modifying effect of these variables, nor was there any association between GSTM1 and age at diagnosis of breast cancer. This is the largest study investigating susceptibility to breast cancer due to polymorphisms in the GST genes. The results conclusively show that single gene GST polymorphisms do not confer a substantial risk of breast cancer to its carriers. Furthermore, GSTs did not interact with smoking or reproductive history to modify cancer risk.
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Affiliation(s)
- Florian D. Vogl
- 1IARC, Lyon, France
- 2Department of Genetic Medicine, European Academy, Bolzano, Italy
| | - Emanuela Taioli
- 3Ospedale Policlinico IRCCS-Direzione Scientifica, Milan, Italy
| | - Christine Maugard
- 4Centre René Gauducheau CRLCC Nantes, Nantes-Saint-Herblain, France
| | - Wei Zheng
- 5Vanderbilt University Medical Center, Nashville, Tennessee
| | - Luis F. Ribeiro Pinto
- 6Departamento de Bioquímica, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil
| | - Christine Ambrosone
- 7Department of Epidemiology, Roswell Park Cancer Institute, Buffalo, New York
| | - Fritz F. Parl
- 5Vanderbilt University Medical Center, Nashville, Tennessee
| | | | - Timothy R. Rebbeck
- 9School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania; and
| | | | - Paolo Boffetta
- 1IARC, Lyon, France
- 10German Cancer Research Center, Heidelberg, Germany
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30
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Egan KM, Cai Q, Shu XO, Jin F, Zhu TL, Dai Q, Gao YT, Zheng W. Genetic polymorphisms in GSTM1, GSTP1, and GSTT1 and the risk for breast cancer: results from the Shanghai Breast Cancer Study and meta-analysis. Cancer Epidemiol Biomarkers Prev 2004; 13:197-204. [PMID: 14973092 DOI: 10.1158/1055-9965.epi-03-0294] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
PURPOSE We studied the relation of breast cancer to common deletion mutations in GSTM1 and GSTT1 and the functional Ile(105)Val polymorphism in GSTP1 in a large, population-based case-control study conducted in China and performed a meta-analysis to summarize the literature. EXPERIMENTAL DESIGN In the case-control study, a total of 1144 breast cancer cases and 1221 community controls were genotyped for GSTM1, GSTP1, and GSTT1 using PCR-based methods. Associations of genotypes and breast cancer were evaluated in logistic regression models. Meta-analysis odds ratios (ORs) were estimated using a fixed effects model. RESULTS In the case-control study, associations were null for GSTM1 [age-adjusted OR 0.97, 95% confidence interval (CI): 0.82-1.14] and GSTT1 (OR 0.97, 95% CI: 0.83-1.15). A significant increase in risk was observed among homozygotes for the variant Ile(105)Val polymorphism (OR 1.92, 95% CI: 1.21-3.04). No combined effects of GSTM1, GSTP1, and GSTT1 genotypes or interactions with potential effect modifiers were detected. All results were similar in pre- and postmenopausal women and for early versus advanced stage breast cancer. The meta-analysis, based predominantly on Caucasian women, supported null results for the homozygous deletion variant in GSTM1 (summary OR 1.05; combining 19 studies) and GSTT1 (summary OR 1.11; 15 studies). Meta-analysis results for the homozygous GSTP1 variant indicated no overall association (summary OR 1.04; 10 studies), although results varied significantly across studies (P = 0.009). CONCLUSIONS This large case-control study provides strong support for earlier studies showing no overall association of the GSTM1 and GSTT1 deletion polymorphisms with breast cancer risk. The GSTP1 variant may be relevant to breast cancer risk in Asian populations.
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Affiliation(s)
- Kathleen M Egan
- Department of Medicine and Vanderbilt-Ingram Cancer Center, Vanderbilt University, Nashville, Tennessee 27232-8300, USA.
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Kulp KS, Knize MG, Fowler ND, Salmon CP, Felton JS. PhIP metabolites in human urine after consumption of well-cooked chicken. J Chromatogr B Analyt Technol Biomed Life Sci 2004; 802:143-53. [PMID: 15036006 DOI: 10.1016/j.jchromb.2003.09.032] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
We devised an assay to quantify the metabolites of 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) in human urine following a single exposure to well-cooked meat. Our method uses LC/MS/MS to detect four metabolites and four deuterated internal standard peaks in a single chromatographic run. N2-OH-PhIP-N2-glucuronide was the most abundant urinary metabolite excreted by the 12 individuals who participated in our study. N2-PhIP glucuronide was the second most abundant metabolite for 8 of the 12 volunteers. The stability of PhIP metabolism over time was studied in three of the volunteers who repeated the assay eight times over a 2.5 year-period. PhIP metabolite excretion varied in each subject over time, although the rate of excretion was more constant. Our results suggest that quantifying PhIP metabolites should make future studies of individual susceptibility and dietary interventions possible.
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Affiliation(s)
- K S Kulp
- Biology and Biotechnology Research Program, Lawrence Livermore National Laboratory, PO Box 808, 7000 East Avenue, L-452, Livermore, CA 94551-9900, USA.
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Gerber B, Müller H, Reimer T, Krause A, Friese K. Nutrition and lifestyle factors on the risk of developing breast cancer. Breast Cancer Res Treat 2003; 79:265-76. [PMID: 12825861 DOI: 10.1023/a:1023959818513] [Citation(s) in RCA: 52] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Aspects of nutrition and lifestyle may be largely responsible for the development of common cancers in Western countries, as indicated by the large differences in breast cancer rates between countries, the striking changes in these rates among migrating populations, and the rapid changes over time within countries. The better informed and increasingly health-conscious population of the present day are intensively seeking to identify and eliminate these putative carcinogenic risk factors and to exploit the preventive effects that have been attributed to certain dietary components. Nutrition and 'lifestyle' may exert its carcinogenic effects indirectly by cell stimulations (alcohol, hormone therapy in postmenopause), inhibition of DNA-repair mechanisms (lack of vitamins), effecting estrogen metabolism (phytoestrogenes), or as promotors to enhance growth of tumours (body mass index). Some 'substances' may act as a carcinogenic itself, for example, aromatic hydrocarbons in tobacco or increased polycyclic aromatic hydrocarbons in well done meat. Individual differences in the effects of nutritional factors on mammary epithelia could be caused by genetic polymorphisms. In this critical review, we focus on current data regarding the effect of nutrition and lifestyle, on the risk of developing breast cancer. A health lifestyle, consisting of 'healthy diet', physical activity, renunciation of stimulants, is recommended from childhood throughout life.
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Affiliation(s)
- Bernd Gerber
- Department of Obstetrics and Gynaecology, University of Rostock, Germany.
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