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Zhang W, Jiang J, He Y, Li X, Yin S, Chen F, Li W. Association between vitamins and risk of brain tumors: A systematic review and dose-response meta-analysis of observational studies. Front Nutr 2022; 9:935706. [PMID: 35967781 PMCID: PMC9372437 DOI: 10.3389/fnut.2022.935706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2022] [Accepted: 07/11/2022] [Indexed: 11/16/2022] Open
Abstract
Background Brain tumor is one of the important causes of cancer mortality, and the prognosis is poor. Therefore, early prevention of brain tumors is the key to reducing mortality due to brain tumors. Objective This review aims to quantitatively evaluate the association between vitamins and brain tumors by meta-analysis. Methods We searched articles on PubMed, Cochrane Library, Web of Science, and Embase databases from inception to 19 December 2021. According to heterogeneity, the fixed-effects model or random-effects model was selected to obtain the relative risk of the merger. Based on the methods described by Greenland and Longnecker, we explored the dose-response relationship between vitamins and the risk of brain tumors. Subgroup analysis, sensitivity analysis, and publication bias were also used for the analysis. Results The study reviewed 23 articles, including 1,347,426 controls and 6,449 brain tumor patients. This study included vitamin intake and circulating concentration. For intake, it mainly included vitamin A, vitamin B, vitamin C, vitamin E, β-carotene, and folate. For circulating concentrations, it mainly included vitamin E and vitamin D in the serum (25-hydroxyvitamin D and α-tocopherol). For vitamin intake, compared with the lowest intakes, the highest intakes of vitamin C (RR = 0.81, 95%CI:0.66–0.99, I2 = 54.7%, Pfor heterogeneity = 0.007), β-carotene (RR = 0.78, 95%CI:0.66–0.93, I2 = 0, Pfor heterogeneity = 0.460), and folate (RR = 0.66, 95%CI:0.55–0.80, I2 = 0, Pfor heterogeneity = 0.661) significantly reduced the risk of brain tumors. For serum vitamins, compared with the lowest concentrations, the highest concentrations of serum α-tocopherol (RR = 0.61, 95%CI:0.44–0.86, I2 = 0, Pfor heterogeneity = 0.656) significantly reduced the risk of brain tumors. The results of the dose-response relationship showed that increasing the intake of 100 μg folate per day reduced the risk of brain tumors by 7% (P−nonlinearity = 0.534, RR = 0.93, 95%CI:0.90–0.96). Conclusion Our analysis suggests that the intake of vitamin C, β-carotene, and folate can reduce the risk of brain tumors, while high serum α-tocopherol concentration also has a protective effect on brain tumors. Therefore, vitamins may provide new ideas for the prevention of brain tumors. Systematic Review Registration PROSPERO, identifier CRD42022300683.
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Affiliation(s)
- Weichunbai Zhang
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jing Jiang
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Yongqi He
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xinyi Li
- College of Nursing, University of South Florida, Tampa, FL, United States
| | - Shuo Yin
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Feng Chen
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Wenbin Li
- Department of Neuro-Oncology, Cancer Center, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
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An extensive meta-analysis of the association of MTHFR c.677C > T and c.1298A > C polymorphisms with gliomas. GENE REPORTS 2021. [DOI: 10.1016/j.genrep.2021.101111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Petrone I, Bernardo PS, dos Santos EC, Abdelhay E. MTHFR C677T and A1298C Polymorphisms in Breast Cancer, Gliomas and Gastric Cancer: A Review. Genes (Basel) 2021; 12:587. [PMID: 33920562 PMCID: PMC8073588 DOI: 10.3390/genes12040587] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2021] [Revised: 04/08/2021] [Accepted: 04/15/2021] [Indexed: 02/07/2023] Open
Abstract
Folate (vitamin B9) is found in some water-soluble foods or as a synthetic form of folic acid and is involved in many essential biochemical processes. Dietary folate is converted into tetrahydrofolate, a vital methyl donor for most methylation reactions, including DNA methylation. 5,10-methylene tetrahydrofolate reductase (MTHFR) is a critical enzyme in the folate metabolism pathway that converts 5,10-methylenetetrahydrofolate into 5-methyltetrahydrofolate, which produces a methyl donor for the remethylation of homocysteine to methionine. MTHFR polymorphisms result in reduced enzyme activity and altered levels of DNA methylation and synthesis. MTHFR polymorphisms have been linked to increased risks of several pathologies, including cancer. Breast cancer, gliomas and gastric cancer are highly heterogeneous and aggressive diseases associated with high mortality rates. The impact of MTHFR polymorphisms on these tumors remains controversial in the literature. This review discusses the relationship between the MTHFR C677T and A1298C polymorphisms and the increased risk of breast cancer, gliomas, and gastric cancer. Additionally, we highlight the relevance of ethnic and dietary aspects of population-based studies and histological stratification of highly heterogeneous tumors. Finally, this review discusses these aspects as potential factors responsible for the controversial literature concerning MTHFR polymorphisms.
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Affiliation(s)
- Igor Petrone
- Stem Cell Laboratory, Center for Bone Marrow Transplants, Brazilian National Cancer Institute—INCA, Rio de Janeiro 20230-240, Brazil; (E.C.d.S.); (E.A.)
- Stricto Sensu Graduate Program in Oncology, INCA, Rio de Janeiro 20230-240, Brazil;
| | - Paula Sabbo Bernardo
- Stricto Sensu Graduate Program in Oncology, INCA, Rio de Janeiro 20230-240, Brazil;
- Laboratory of Cellular and Molecular Hemato-Oncology, Molecular Hemato-Oncology Program, Brazilian National Cancer Institute—INCA, Rio de Janeiro 20230-240, Brazil
| | - Everton Cruz dos Santos
- Stem Cell Laboratory, Center for Bone Marrow Transplants, Brazilian National Cancer Institute—INCA, Rio de Janeiro 20230-240, Brazil; (E.C.d.S.); (E.A.)
- Stricto Sensu Graduate Program in Oncology, INCA, Rio de Janeiro 20230-240, Brazil;
| | - Eliana Abdelhay
- Stem Cell Laboratory, Center for Bone Marrow Transplants, Brazilian National Cancer Institute—INCA, Rio de Janeiro 20230-240, Brazil; (E.C.d.S.); (E.A.)
- Stricto Sensu Graduate Program in Oncology, INCA, Rio de Janeiro 20230-240, Brazil;
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Bastos CEMC, do Nascimento Borges B, Diniz IG, Brito JRN, Anselmo NP, Pieczarka JC, Nagamachi CY. MTHFR C677T polymorphism not associated with meningiomas: Study of an interethnic Brazilian population, and meta-analysis. Meta Gene 2020. [DOI: 10.1016/j.mgene.2020.100795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Paradkar MU, Padate B, Shah SAV, Vora H, Ashavaid TF. Association of Genetic Variants with Hyperhomocysteinemia in Indian Patients with Thrombosis. Indian J Clin Biochem 2019; 35:465-473. [PMID: 33013017 DOI: 10.1007/s12291-019-00846-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2018] [Accepted: 08/20/2019] [Indexed: 11/24/2022]
Abstract
Hyperhomocysteinemia known to be associated with increased thrombotic tendency has been considered as a risk factor for coronary artery disease, atherosclerosis, venous thrombosis, and stroke. There are three main genes MTHFR, cystathionine beta-synthase (CBS) and methionine synthase (MS) and it's genetic variant that are known to influence the homocysteine metabolism leading to hyperhomocysteinemia. There is scarcity of Indian data on hyperhomocysteinemia and genetics variants in patients with thrombosis. Hence the objective of present study was to determine MTHFR, CBS, and MS genetic variants in thrombosis patients from Indian population. Genetic variant analysis was performed on thrombosis patients to detect MTHFR C677T (rs1801133), MTHFR A1298C (rs1801131), MS A2756G (rs1805087) and CBS T833C (rs5742905) mutations. The mutant allele frequencies of MTHFR 677T, MTHFR 1298C, MS2756G and CBS 833C were observed to be 16.1%, 37.5%, 34.1% and 5.8% respectively. MTHFR 677TT genotype was observed to be significantly associated with elevated homocysteine (Hcy) levels (64.65 μmol/L) alleles as compared to CC alleles (32.43 μmol/L) and CT alleles (30.54 μmol/L). MTHFR A1298C, MS A2756G and CBS T833C genotypes did not showed significant association with higher Hcy levels. Thus, in Indian patients with thrombosis only MTHFR T677T genotype was observed to be significantly associated with hyperhomocysteinemia.
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Affiliation(s)
- Minal Umesh Paradkar
- Research Laboratories, P. D. Hinduja Hospital & Medical Research Centre, Lalita Girdhar Bldg (S1), Veer Savarkar Marg, Mahim, Mumbai 400016, India
| | - Balkrishna Padate
- Department of Hemato-Oncology and Bone Marrow Transplant, P. D. Hinduja Hospital & Medical Research Centre, Veer Savrkar Marg, Mumbai 400016, India
| | - Swarup A V Shah
- Research Laboratories, P. D. Hinduja Hospital & Medical Research Centre, Lalita Girdhar Bldg (S1), Veer Savarkar Marg, Mahim, Mumbai 400016, India
| | - Hiral Vora
- Research Laboratories, P. D. Hinduja Hospital & Medical Research Centre, Lalita Girdhar Bldg (S1), Veer Savarkar Marg, Mahim, Mumbai 400016, India
| | - Tester F Ashavaid
- Department of Laboratory Medicine, Biochemistry Laboratory, P. D. Hinduja Hospital & Medical Research Center, Lalita Girdhar Bldg (S1), Veer Savarkar Marg, Mahim, Mumbai, 400 016 India
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Alneyadi A, Shah I, Ashraf SS. An innovative bioanalytical research project course to train undergraduate students on liquid chromatography-mass spectrometry. BIOCHEMISTRY AND MOLECULAR BIOLOGY EDUCATION : A BIMONTHLY PUBLICATION OF THE INTERNATIONAL UNION OF BIOCHEMISTRY AND MOLECULAR BIOLOGY 2019; 47:228-238. [PMID: 30791206 DOI: 10.1002/bmb.21225] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Accepted: 02/01/2019] [Indexed: 05/24/2023]
Abstract
Active-learning strategies such as undergraduate research courses and course-based undergraduate research experiences (CUREs), which engage students in the practical experiments, have been reported as efficient ways for effective teaching and training of graduating students. Recently, many practical examples have been published in various fields to develop critical skills needed by undergraduate students for graduate school or the workforce; however, very few examples have been published for bioanalytical topics, specifically, Liquid Chromatography-Mass Spectrometry (LC-MS-MS). Herein, we describe an innovative undergraduate research course that was used to train well-prepared graduating seniors on LC-MS-MS and in developing a sensitive method for detecting vitamin B9 (folic acid) levels in different milk samples. During this semester-long exercise, the students were exposed to literature review, basic UV-Vis spectroscopy, and HPLC and LC-MS-MS techniques. Additionally, as part of this laboratory-based research course, they researched published approaches on analyzing folic acid in food samples and devised a method to extract and quantify folic acid levels in different brands of milk using LC-MS-MS instruments. Feedback from students and faculty members was very positive as the students felt that this opportunity helped them to become more comfortable using HPLC and LC-MS-MS instruments and felt empowered to answer real-life analytical problems. This laboratory-based undergraduate research course can also be modified and used as an advanced bioanalytical laboratory exercise in biochemistry or analytical chemistry courses. © 2019 International Union of Biochemistry and Molecular Biology, 47(3):228-238, 2019.
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Affiliation(s)
- Aysha Alneyadi
- Department of Biology, College of Science, UAE University, Al Ain, UAE
| | - Iltaf Shah
- Department of Chemistry, College of Science, UAE University, Al Ain, UAE
| | - Syed Salman Ashraf
- Department of Chemistry, College of Arts and Sciences, Khalifa University, Abu Dhabi, UAE
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Thymidylate synthase gene variation is associated with the risk for conotruncal heart defects in Chinese population. Cardiol Young 2019; 29:280-285. [PMID: 30572970 DOI: 10.1017/s1047951118002184] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Conotruncal heart defects are considered to be one of the most common types of birth defect worldwide. Genetic disturbances in folate metabolism such as Thymidylate synthase may increase risk for conotruncal heart defects. We evaluated two common Thymidylate synthase polymorphisms, including the 28 bp tandem repeat in the promoter enhancer region of the 5'-untranslated region and the 6 bp deletion in the 3'-untranslated region, as risk factors of conotruncal heart defects including various subtypes of malformations, in a total of 193 mothers with conotruncal heart defect in offspring and 234 healthy controls in the Chinese population. Logistic regression analyses revealed that mothers who were homozygotes with deletion (-/-) had a 1.8-fold (odds ratio: 1.8; 95% confidence interval: 1.0-3.0, p = 0.040) increased risk for conotruncal heart defect in offspring, respectively, when compared with mothers carrying the wild type (+/+) genotype. Consistently, individuals carrying the genotype -/- of the Thymidylate synthase 6 bp deletion also had higher plasma homocysteine levels compared to the mothers carrying the genotype +/+ in the control and conotruncal heart defect groups (p = 0.006 and p = 0.004, respectively). However, our results showed that Thymidylate synthase 28 bp tandem repeat polymorphism was not associated with risk for conotruncal heart defect and plasma homocysteine level. In conclusion, our data suggest that the maternal Thymidylate synthase 6 bp deletion polymorphism might be associated with plasma homocysteine level and risk for conotruncal heart defect in offspring.
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Kumawat R, Gowda SH, Debnath E, Rashid S, Niwas R, Gupta Y, Upadaya AD, Suri A, Chandra PS, Gupta DK, Lakshmy R, Sarkar C, Sinha S, Chosdol K. Association of Single Nucleotide Polymorphisms (SNPs) in Genes Encoding for Folate Metabolising Enzymes with Glioma and Meningioma in Indian Population. Asian Pac J Cancer Prev 2018; 19:3415-3425. [PMID: 30583664 PMCID: PMC6428555 DOI: 10.31557/apjcp.2018.19.12.3415] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [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 primary brain tumors with Single Nucleotide polymorphisms (SNPs) in genes of folate metabolising enzymes have been reported to vary among different ethnic population. Here, we have studied the association of SNPs of folate metabolizing genes with the primary brain tumors (glioma and meningioma) in North Indian population. Methods: SNPs of genes coding for folate metabolizing enzymes was carried out in 288 study population from North India [Glioma (n=108), Meningioma (n=76) and healthy-control (n=104)]. The allele-specific polymerase chain reaction (ARMS-PCR) was used to analyse the SNP A1298C of the MTHFR (Methylenetetrahydrofolate-reductase) and the SNP A66G of the methionine synthase reductase (MTRR) genes. The PCR-RLFP (Restriction Fragment Length Polymorphism) was used to analyse the SNP C677T of the Methylene tetrahydrofolate-reductase and the SNP A2756G of the methionine-synthase (MTR) genes. Serum homocysteine, vitamin B12 and folate levels were evaluated in controls/patients serum using Chemiluminescence immunoassay and the levels were correlated with SNPs genotype. Results: The CC genotype of MTHFR A1298C was observed to have reduced risk of having meningioma than AA genotype (odd ratio=0.62, 95%CI 0.32-0.97, p=0.03). Similarly, the AG genotype of MTRR A66G showed reduced risk of glioma than AA genotype (odd ratio=0.56, 95%CI 0.32-0.97, p=0.039). Furthermore, in patients with AA genotype of MTR A2756G and CT genotype of MTHFR C677T showed higher serum homocysteine level than GG genotype (8.6 µmol/L, p=0.048) and CC genotype (11.2µmol/L, p=0.039) respectively. Conclusion: Our findings provide an insight into the risk association of SNPs in MTHFR A1298C and MTRR A66G genes with glioma/meningioma patients. Further studies are needed to evaluate their clinical implications.
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Fahmideh MA, Lavebratt C, Schüz J, Röösli M, Tynes T, Grotzer MA, Johansen C, Kuehni CE, Lannering B, Prochazka M, Schmidt LS, Feychting M. Common genetic variations in cell cycle and DNA repair pathways associated with pediatric brain tumor susceptibility. Oncotarget 2016; 7:63640-63650. [PMID: 27613841 PMCID: PMC5325391 DOI: 10.18632/oncotarget.11575] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2016] [Accepted: 08/15/2016] [Indexed: 01/11/2023] Open
Abstract
Knowledge on the role of genetic polymorphisms in the etiology of pediatric brain tumors (PBTs) is limited. Therefore, we investigated the association between single nucleotide polymorphisms (SNPs), identified by candidate gene-association studies on adult brain tumors, and PBT risk.The study is based on the largest series of PBT cases to date. Saliva DNA from 245 cases and 489 controls, aged 7-19 years at diagnosis/reference date, was genotyped for 68 SNPs. Data were analyzed using unconditional logistic regression.The results showed EGFRrs730437 and EGFRrs11506105 may decrease susceptibility to PBTs, whereas ERCC1rs3212986 may increase risk of these tumors. Moreover, stratified analyses indicated CHAF1Ars243341, CHAF1Ars2992, and XRCC1rs25487 were associated with a decreased risk of astrocytoma subtype. Furthermore, an increased risk of non-astrocytoma subtype associated with EGFRrs9642393, EME1rs12450550, ATMrs170548, and GLTSCRrs1035938 as well as a decreased risk of this subtype associated with XRCC4rs7721416 and XRCC4rs2662242 were detected.This study indicates SNPs in EGFR, ERCC1, CHAF1A, XRCC1, EME1, ATM, GLTSCR1, and XRCC4 may be associated with the risk of PBTs. Therefore, cell cycle and DNA repair pathways variations associated with susceptibility to adult brain tumors also seem to be associated with PBT risk, suggesting pediatric and adult brain tumors might share similar etiological pathways.
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Affiliation(s)
- Maral Adel Fahmideh
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Catharina Lavebratt
- Neurogenetics Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Center for Molecular Medicine, Karolinska University Hospital, L8:00, SE-171 76 Stockholm, Sweden
| | - Joachim Schüz
- Section of Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon, France
| | - Martin Röösli
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, 4002 Basel, Switzerland
- University of Basel, 4003 Basel, Switzerland
| | - Tore Tynes
- The Cancer Registry of Norway, NO-0379 Oslo, Norway
- National Institute of Occupational Health, NO-0360 Oslo, Norway
| | - Michael A. Grotzer
- Department of Oncology, University Children's Hospital of Zurich, 8032 Zurich, Switzerland
| | - Christoffer Johansen
- Unit of Survivorship, The Danish Cancer Society Research Centre, DK-2100 Copenhagen, Denmark
- Oncology Department, Finsen Centre, Rigshospitalet, DK-2100 Copenhagen, Denmark
| | - Claudia E Kuehni
- Swiss Childhood Cancer Registry, Institute of Social and Preventive Medicine, University of Bern, 3012 Bern, Switzerland
| | - Birgitta Lannering
- Childrens Cancer Center, Queen Silvia Childrens Hospital, SE-416 85 Gothenburg, Sweden
| | - Michaela Prochazka
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
| | - Lisbeth S Schmidt
- Department of Clinical Genetics, University Hospital Rigshospitalet, DK-2100 Copenhagen, Denmark
| | - Maria Feychting
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, SE-171 77 Stockholm, Sweden
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Huang X, Gao Y, He J, Cai J, Ta N, Jiang H, Zhu J, Zheng J. The association between RFC1 G80A polymorphism and cancer susceptibility: Evidence from 33 studies. J Cancer 2016; 7:144-52. [PMID: 26819637 PMCID: PMC4716846 DOI: 10.7150/jca.13303] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/18/2015] [Indexed: 02/07/2023] Open
Abstract
Aberrant folate metabolism is closely related to tumorigenesis. Genetic variations in the Reduced folate carrier 1 (RFC1) may alter the progress of folate metabolism, and thereby cause the initiation and progress of the cancer. Considerable studies have performed to investigate the association between RFC1 G80A (rs1051266) polymorphism and cancer susceptibility, but the conclusions were conflicting. Therefore, we conducted a meta-analysis to reevaluate the association of RFC1 G80A polymorphism with cancer risk. PubMed and EMBASE were searched for eligible studies. The association of RFC1 G80A polymorphism and cancer risk was evaluated by the pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs). The significant association was found between RFC1 G80A polymorphism and hematological malignance susceptibility (A vs. G: OR=1.11, 95%CI=1.003-1.23, P=0.045; GA vs. GG: OR=1.18, 95%CI=1.06-1.31, P=0.002; AA+GA vs. GG: OR=1.18, 95%CI=1.07-1.29, P=0.001). Stratified analysis by ethnicity indicated that the association became more prominent among Caucasians (GA vs. GG: OR=1.28, 95%CI=1.12-1.45, P<0.001; AA+GA vs. GG: OR=1.21, 95%CI=1.08-1.36, P=0.001). In term of the cancer type, this polymorphism significantly increased the risk of acute lymphoblast leukemia (GA vs. GG: OR=1.13, 95%CI=1.001-1.28, P=0.048; AA+GA vs. GG: OR=1.28, 95%CI=1.13-1.46, P<0.001) and acute myeloid leukemia (GA vs. GG: OR=2.57, 95%CI=1.37-4.85, P=0.003). No significant association between RFC1 G80A polymorphism and overall solid cancer risk was observed, but a protective association with digestive cancer risk was found (GA vs. GG: OR=0.89, 95%CI= 0.81-0.99, P=0.030). The comprehensive meta-analysis encouraged the notion that RFC1 G80A polymorphism may play an important role in hematopoietic system malignance. These findings need further validation in the large multicenter investigations.
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Affiliation(s)
- Xiaoyi Huang
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Yisha Gao
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Jing He
- 2. Department of Pediatric Surgery, Guangzhou Women and Children's Medical Center, Guangzhou Medical University, Guangzhou 510623, Guangdong, China
| | - Jiao Cai
- 3. Department of Pathophysiology, Second Military Medical University, Shanghai 200433, China
| | - Na Ta
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Hui Jiang
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Jinhong Zhu
- 4. Molecular Epidemiology Laboratory and Department of Laboratory Medicine, Harbin Medical University Cancer Hospital, Harbin 150040, Heilongjiang, China
- ✉ Corresponding authors: Jianming Zheng, Department of Pathology, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai 200438, China, Tel /Fax: (+86-021) 81873689, E-mail: ; Jinhong Zhu, Molecular Epidemiology Laboratory and Department of Laboratory Medicine, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin 150040, Heilongjiang, China, Tel: (+86-0451) 86298786, Fax: (+86-0451) 86298398, E-mail:
| | - Jianming Zheng
- 1. Department of Pathology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
- ✉ Corresponding authors: Jianming Zheng, Department of Pathology, Changhai Hospital, Second Military Medical University, 168 Changhai Road, Shanghai 200438, China, Tel /Fax: (+86-021) 81873689, E-mail: ; Jinhong Zhu, Molecular Epidemiology Laboratory and Department of Laboratory Medicine, Harbin Medical University Cancer Hospital, 150 Haping Road, Harbin 150040, Heilongjiang, China, Tel: (+86-0451) 86298786, Fax: (+86-0451) 86298398, E-mail:
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Hoang PTV, Ambroise J, Dekairelle AF, Durant JF, Butoescu V, Chi VLD, Huynh N, Nguyen TB, Robert A, Vermylen C, Gala JL. Comparative pharmacogenetic analysis of risk polymorphisms in Caucasian and Vietnamese children with acute lymphoblastic leukemia: prediction of therapeutic outcome? Br J Clin Pharmacol 2015; 79:429-40. [PMID: 25099492 DOI: 10.1111/bcp.12481] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 08/04/2014] [Indexed: 01/10/2023] Open
Abstract
AIMS Acute lymphoblastic leukemia (ALL) is the most common of all paediatric cancers. Aside from predisposing to ALL, polymorphisms could also be associated with poor outcome. Indeed, genetic variations involved in drug metabolism could, at least partially, be responsible for heterogeneous responses to standardized leukemia treatments, hence requiring more personalized therapy. The aims of this study were to (a) to determine the prevalence of seven common genetic polymorphisms including those that affect the folate and/or thiopurine metabolic pathways, i.e. cyclin D1 (CCND1-G870A), γ-glutamyl hydrolase (GGH-C452T), methylenetetrahydrofolate reductase (MTHFR-C677T and MTHFR-A1298C), thymidylate synthase promoter (TYMS-TSER), thiopurine methyltransferase (TPMT*3A and TPMT*3C) and inosine triphosphate pyrophosphatase (ITPA-C94A), in Caucasian (n = 94, age < 20) and Vietnamese (n = 141, age < 16 years) childhood ALL and (b) to assess the impact of a multilocus genetic risk score (MGRS) on relapse-free survival (RFS) using a Cox proportional-hazards regression model. RESULTS The prevalence of MTHFR-677TT genotype was significantly higher in Caucasians (P = 0.008), in contrast to the prevalence of TYMS-TSER*3R/3R and ITPA-94AA/AC genotypes which were significantly higher in Vietnamese (P < 0.001 and P = 0.02, respectively). Compared with children with a low MGRS (≤ 3), those with a high MGRS (≥ 4) were 2.06 (95% CI = 1.01, 4.22; P = 0.04) times more likely to relapse. Adding MGRS into a multivariate Cox regression model with race/ethnicity and four clinical variables improved the predictive accuracy of the model (AUC from 0.682 to 0.709 at 24 months). CONCLUSION Including MGRS into a clinical model improved the predictive accuracy of short and medium term prognosis, hence confirming the association between well determined pharmacogenotypes and outcome of paediatric ALL. Whether variants on other genes associated with folate metabolism can substantially improve the predictive value of current MGRS is not known but deserves further evaluation.
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Affiliation(s)
- Phuong Thu Vu Hoang
- Centre de Technologies Moléculaires Appliquées (CTMA), Institut de Recherche Expérimentale et Clinique (IREC), Université catholique de Louvain (UCL), Brussels, Belgium; Service d'hématologie et oncologie pédiatrique, Cliniques universitaires Saint-Luc, Université catholique de Louvain (UCL), Brussels, Belgium; Pham Ngoc Thach University of Medecin, Ho Chi Minh city, Vietnam; Blood Transfusion and Hematology Hospital, Ho Chi Minh city, Vietnam
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Adel Fahmideh M, Lavebratt C, Schüz J, Röösli M, Tynes T, Grotzer MA, Johansen C, Kuehni CE, Lannering B, Prochazka M, Schmidt LS, Feychting M. CCDC26, CDKN2BAS, RTEL1 and TERT Polymorphisms in pediatric brain tumor susceptibility. Carcinogenesis 2015; 36:876-82. [PMID: 26014354 DOI: 10.1093/carcin/bgv074] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Accepted: 05/20/2015] [Indexed: 03/25/2024] Open
Abstract
The role of genetic polymorphisms in pediatric brain tumor (PBT) etiology is poorly understood. We hypothesized that single nucleotide polymorphisms (SNPs) identified in genome-wide association studies (GWAS) on adult glioma would also be associated with PBT risk. The study is based on the Cefalo study, a population-based multicenter case-control study. Saliva DNA from 245 cases and 489 controls, aged 7-19 years at diagnosis/reference date, was extracted and genotyped for 29 SNPs reported by GWAS to be significantly associated with risk of adult glioma. Data were analyzed using unconditional logistic regression. Stratified analyses were performed for two histological subtypes: astrocytoma alone and the other tumor types combined. The results indicated that four SNPs, CDKN2BAS rs4977756 (p = 0.036), rs1412829 (p = 0.037), rs2157719 (p = 0.018) and rs1063192 (p = 0.021), were associated with an increased susceptibility to PBTs, whereas the TERT rs2736100 was associated with a decreased risk (p = 0.018). Moreover, the stratified analyses showed a decreased risk of astrocytoma associated with RTEL1 rs6089953, rs6010620 and rs2297440 (p trend = 0.022, p trend = 0.042, p trend = 0.029, respectively) as well as an increased risk of this subtype associated with RTEL1 rs4809324 (p trend = 0.033). In addition, SNPs rs10464870 and rs891835 in CCDC26 were associated with an increased risk of non-astrocytoma tumor subtypes (p trend = 0.009, p trend = 0.007, respectively). Our findings indicate that SNPs in CDKN2BAS, TERT, RTEL1 and CCDC26 may be associated with the risk of PBTs. Therefore, we suggest that pediatric and adult brain tumors might share common genetic risk factors and similar etiological pathways.
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Affiliation(s)
- Maral Adel Fahmideh
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, Stockholm SE-171 77, Sweden, Neurogenetics Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Center for Molecular Medicine, Karolinska University Hospital, Stockholm SE-171 76, Sweden, Section of Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon CEDEX 08, France, Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel 4002, Switzerland, University of Basel, Basel 4003, Switzerland, The Cancer Registry of Norway, Oslo N-0304, Norway, National Institute of Occupational Health, Oslo NO-0033, Norway, Department of Oncology, University Children's Hospital of Zurich, Zurich 8091, Switzerland, Unit of Survivorship, The Danish Cancer Society Research Centre, Copenhagen DK-2100, Denmark, 5073 Oncology Clinic, Finsen Centre Rigshospitalet, University of Copenhagen, Copenhagen DK-2100, Denmark, Swiss Childhood Cancer Registry, Institute of Social and Preventive Medicine, University of Bern, Bern 3012, Switzerland, Department of Clinical Sciences, Pediatric Oncology, University of Gothenburg, SE 416 85 Gothenburg, Sweden and Department of Pediatric Oncology, University Hospital Rigshospitalet, Copenhagen DK-2100, Denmark
| | - Catharina Lavebratt
- Neurogenetics Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Center for Molecular Medicine, Karolinska University Hospital, Stockholm SE-171 76, Sweden
| | - Joachim Schüz
- Section of Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon CEDEX 08, France
| | - Martin Röösli
- Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel 4002, Switzerland, University of Basel, Basel 4003, Switzerland
| | - Tore Tynes
- The Cancer Registry of Norway, Oslo N-0304, Norway, National Institute of Occupational Health, Oslo NO-0033, Norway
| | - Michael A Grotzer
- Department of Oncology, University Children's Hospital of Zurich, Zurich 8091, Switzerland
| | - Christoffer Johansen
- Unit of Survivorship, The Danish Cancer Society Research Centre, Copenhagen DK-2100, Denmark, 5073 Oncology Clinic, Finsen Centre Rigshospitalet, University of Copenhagen, Copenhagen DK-2100, Denmark
| | - Claudia E Kuehni
- Swiss Childhood Cancer Registry, Institute of Social and Preventive Medicine, University of Bern, Bern 3012, Switzerland
| | - Birgitta Lannering
- Department of Clinical Sciences, Pediatric Oncology, University of Gothenburg, SE 416 85 Gothenburg, Sweden and
| | - Michaela Prochazka
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, Stockholm SE-171 77, Sweden, Neurogenetics Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Center for Molecular Medicine, Karolinska University Hospital, Stockholm SE-171 76, Sweden, Section of Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon CEDEX 08, France, Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel 4002, Switzerland, University of Basel, Basel 4003, Switzerland, The Cancer Registry of Norway, Oslo N-0304, Norway, National Institute of Occupational Health, Oslo NO-0033, Norway, Department of Oncology, University Children's Hospital of Zurich, Zurich 8091, Switzerland, Unit of Survivorship, The Danish Cancer Society Research Centre, Copenhagen DK-2100, Denmark, 5073 Oncology Clinic, Finsen Centre Rigshospitalet, University of Copenhagen, Copenhagen DK-2100, Denmark, Swiss Childhood Cancer Registry, Institute of Social and Preventive Medicine, University of Bern, Bern 3012, Switzerland, Department of Clinical Sciences, Pediatric Oncology, University of Gothenburg, SE 416 85 Gothenburg, Sweden and Department of Pediatric Oncology, University Hospital Rigshospitalet, Copenhagen DK-2100, Denmark
| | - Lisbeth S Schmidt
- Department of Pediatric Oncology, University Hospital Rigshospitalet, Copenhagen DK-2100, Denmark
| | - Maria Feychting
- Unit of Epidemiology, Institute of Environmental Medicine, Karolinska Institutet, Box 210, Stockholm SE-171 77, Sweden, Neurogenetics Unit, Department of Molecular Medicine and Surgery, Karolinska Institutet, and Center for Molecular Medicine, Karolinska University Hospital, Stockholm SE-171 76, Sweden, Section of Environment and Radiation, International Agency for Research on Cancer (IARC), 69372 Lyon CEDEX 08, France, Department of Epidemiology and Public Health, Swiss Tropical and Public Health Institute, Basel 4002, Switzerland, University of Basel, Basel 4003, Switzerland, The Cancer Registry of Norway, Oslo N-0304, Norway, National Institute of Occupational Health, Oslo NO-0033, Norway, Department of Oncology, University Children's Hospital of Zurich, Zurich 8091, Switzerland, Unit of Survivorship, The Danish Cancer Society Research Centre, Copenhagen DK-2100, Denmark, 5073 Oncology Clinic, Finsen Centre Rigshospitalet, University of Copenhagen, Copenhagen DK-2100, Denmark, Swiss Childhood Cancer Registry, Institute of Social and Preventive Medicine, University of Bern, Bern 3012, Switzerland, Department of Clinical Sciences, Pediatric Oncology, University of Gothenburg, SE 416 85 Gothenburg, Sweden and Department of Pediatric Oncology, University Hospital Rigshospitalet, Copenhagen DK-2100, Denmark
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Zheng XH, Jiang LY, Zhao LT, Zhang QY, Ding L. Simultaneous quantitation of folic acid and 5-methyltetrahydrofolic acid in human plasma by HPLC-MS/MS and its application to a pharmacokinetic study. J Pharm Anal 2015; 5:269-275. [PMID: 29403940 PMCID: PMC5762215 DOI: 10.1016/j.jpha.2015.05.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2015] [Revised: 05/12/2015] [Accepted: 05/19/2015] [Indexed: 11/26/2022] Open
Abstract
A sensitive method based on high-performance liquid chromatography–tandem mass spectrometry (LC–MS/MS) has been developed for the simultaneous determination of folic acid (FA) and its active metabolite, 5-methyltetrahydrofolic acid (5-M-THF), in human plasma. The analytes were extracted from plasma with methanol solution containing 10 mg/mL of 2-mercaptoethanol and 0.025% (v/v) ammonium hydroxide. FA and 5-M-THF were more stable after the addition of 2-mercaptoethanol and ammonium hydroxide in the sample preparation procedures of this study than they were in the previously published methods. Chromatographic separation was performed on a Hedera ODS-2 column using a gradient elution system of acetonitrile and 1 mM ammonium acetate buffer solution containing 0.6% formic acid as mobile phase. LC–MS/MS was carried out with an ESI ion-source and operated in the multiple reaction monitoring (MRM) mode. The assay was linear over the concentration ranges of 0.249–19.9 ng/mL for FA, and 5.05–50.5 ng/mL for 5-M-THF. The developed LC–MS/MS method offers increased sensitivity for quantification of FA and 5-M-THF in human plasma and was applicable to a pharmacokinetic study of FA and 5-M-THF.
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Affiliation(s)
- Xiao-Hong Zheng
- Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Li-Yuan Jiang
- Medical Faculty, Quzhou College of Technology, 18 Jiangyuan road, Quzhou 324000, China
| | - Lan-Ting Zhao
- Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
| | - Quan-Ying Zhang
- Department of Pharmacy, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Li Ding
- Department of Pharmaceutical Analysis, China Pharmaceutical University, 24 Tongjiaxiang, Nanjing 210009, China
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Greenop KR, Scott RJ, Attia J, Bower C, de Klerk NH, Norris MD, Haber M, Jamieson SE, van Bockxmeer FM, Gottardo NG, Ashton LJ, Armstrong BK, Milne E. Folate Pathway Gene Polymorphisms and Risk of Childhood Brain Tumors: Results from an Australian Case–Control Study. Cancer Epidemiol Biomarkers Prev 2015; 24:931-7. [DOI: 10.1158/1055-9965.epi-14-1248] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 03/12/2015] [Indexed: 11/16/2022] Open
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Montalvão-de-Azevedo R, Vasconcelos GM, Vargas FR, Thuler LC, Pombo-de-Oliveira MS, de Camargo B. RFC-1 80G>A polymorphism in case-mother/control-mother dyads is associated with risk of nephroblastoma and neuroblastoma. Genet Test Mol Biomarkers 2014; 19:75-81. [PMID: 25536437 DOI: 10.1089/gtmb.2014.0177] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
AIM Embryonic tumors are associated with an interruption during normal organ development; they may be related to disturbances in the folate pathway involved in DNA synthesis, methylation, and repair. Prenatal supplementation with folic acid is associated with a decreased risk of neuroblastoma, brain tumors, retinoblastoma, and nephroblastoma. The aim of this study was to investigate the association between MTHFR rs1801133 (C677T) and RFC-1 rs1051266 (G80A) genotypes with the risk of developing nephroblastoma and neuroblastoma. MATERIALS AND METHODS Case-mother/control-mother dyad study. Samples from Brazilian children with nephroblastoma (n=80), neuroblastoma (n=66), healthy controls (n=453), and their mothers (case n=93; control n=75) were analyzed. Genomic DNA was isolated from peripheral blood cells and/or buccal cells and genotyped to identify MTHFR C677T and RFC-1 G80A polymorphisms. Differences in genotype distribution between patients and controls were tested by multiple logistic regression analysis. RESULTS Risk for nephroblastoma and neuroblastoma was two- to fourfold increased among children with RFC-1 polymorphisms. An increased four- to eightfold risk for neuroblastoma and nephroblastoma was seen when the child and maternal genotypes were combined. CONCLUSION Our results suggest that mother and child RFC-1 G80A genotypes play a role on the risk of neuroblastoma and nephroblastoma since this polymorphism may impair the intracellular levels of folate, through carrying fewer folate molecules to the cell interior, and thus, the intracellular concentration is not enough to maintain regular DNA synthesis and methylation pathways.
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Jiang-Hua Q, De-Chuang J, Zhen-Duo L, Shu-de C, Zhenzhen L. Association of methylenetetrahydrofolate reductase and methionine synthase polymorphisms with breast cancer risk and interaction with folate, vitamin B6, and vitamin B 12 intakes. Tumour Biol 2014; 35:11895-901. [PMID: 25217320 DOI: 10.1007/s13277-014-2456-1] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 08/06/2014] [Indexed: 12/18/2022] Open
Abstract
We assessed the association between dietary intake of folate and the MTHFR genotype with breast cancer in a Chinese population, with additional analysis of the interactions of gene polymorphisms and dietary intake of folate, vitamin B6, and vitamin B12. A case-control study was performed, and 535 patients with newly diagnosed breast cancer and 673 controls were enrolled into this study. The MTHFR 667TT genotype (odds ratio (OR) = 1.82, 95 % confidence interval (CI) = 1.24-2.97) and T allele (OR 0= 1.48, 95 % CI = 1.15-1.78) were correlated with a moderately significant increased risk of breast cancer when compared with the CC genotype. Individuals carrying the MTR 2756GG genotype (OR = 1.66, 95 % CI = 1.16-2.56) and G allele (OR = 1.42, 95 % CI = 1.26-1.81) had a higher risk of breast cancer when compared with subjects with the AA genotype. The MTHFR 667 T allele and MTR 2756 G allele were associated with a higher risk of breast cancer in individuals with low folate intake, vitamin B6, and vitamin B12, but the association disappeared among subjects with moderate and high intake of folate, vitamin B6, and vitamin B12. This case-control study found that the MTHFR C677T and MTR A2756G polymorphisms are associated with risk of breast cancer, and folate, vitamin B6, and vitamin B12 intakes influence these associations.
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Affiliation(s)
- Qiao Jiang-Hua
- Breast Cancer Center, Affiliated Cancer Hospital of Zhengzhou University, Henan Cancer Hospital, 127 Dongming Road, Zhengzhou, 45008, China
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Greenop KR, Miller M, de Klerk NH, Scott RJ, Attia J, Ashton LJ, Dalla-Pozza L, Bower C, Armstrong BK, Milne E. Maternal Dietary Intake of Folate and Vitamins B6 and B12 During Pregnancy and Risk of Childhood Brain Tumors. Nutr Cancer 2014; 66:800-9. [DOI: 10.1080/01635581.2014.916326] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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18
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de Miranda DO, Barros JEXS, Vieira MMS, Lima ELS, Moraes VLL, da Silva HA, Garcia HLBO, Lima CA, Gomes AV, Santos N, Muniz MTC. Reduced folate carrier-1 G80a gene polymorphism is associated with neuroblastoma's development. Mol Biol Rep 2014; 41:5069-75. [PMID: 24771227 DOI: 10.1007/s11033-014-3372-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2013] [Accepted: 01/06/2014] [Indexed: 10/25/2022]
Abstract
Neuroblastoma is a malignant embryonal tumor of neural crest cells that give rise to the sympathetic nervous system, responsible for 10-70% of all cases of childhood cancer. Because of its early appearance, it has been suggested that risk factors active in the prenatal can be associated with the pathogenesis of neuroblastoma. The aim of this study was to investigate whether the genetic polymorphisms MTHFR C677T and A1298C, MTR A2756G, TYMS 2R/3R and SLC19A1 G80A, involved in folate metabolism, increase the risk of neuroblastoma in Brazilian children. This study comprised 31 Brazilian children (0-14 years old) diagnosed with neuroblastoma compared with 92 controls. Investigation of polymorphisms MTHFR C677T, MTR A2756G and SLC19A1 A80G was performed using PCR-RFLP, the TYMS 2R/3R using PCR and MTHFR A1298C using AS-PCR. The SLC19A1 A80A genotype was significantly associated with the development of neuroblastoma, compared with the control group (Williams G-Test = 0.0286; OR = 5.1667; 95% CI = 1.4481-18.4338; p = 0.0175). When analyzed together, the 80AG+AA genotypes showed a trend toward association (OR = 3.3033; 95% CI = 1.0586-10.3080; p = 0.0563). Our results suggest that individuals carriers of genotype AA for the SLC19A1 gene present risk for the development of neuroblastoma and possibly have difficulty in absorption of folic acid by the cells, and this may adversely affect the metabolism of folate causing genomic instability and promoting the development of cancer. This is the first retrospective/prospective study to examine the relationship between polymorphisms of folate pathway genes and risk of neuroblastoma.
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Affiliation(s)
- Dyego O de Miranda
- Laboratório de Biologia Molecular, Centro de Oncohematologia Pediátrica (CEONHPE), Hospital Universitário Oswaldo Cruz - HUOC/UPE, Universidade de Pernambuco - UPE, Arnóbio Marques, 310 - Santo Amaro, Recife, 50100-130, Pernambuco, Brazil,
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Association of the MTHFR C677T polymorphism with primary brain tumor risk. Tumour Biol 2013; 34:3457-64. [PMID: 23846816 DOI: 10.1007/s13277-013-0922-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 06/11/2013] [Indexed: 12/13/2022] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) gene plays key roles not only in folate metabolism but also in carcinogenesis. The single nucleotide polymorphism MTHFR C677T has been indicated in the development of various tumors. The effect of the MTHFR C677T polymorphism on brain tumors remains poorly understood. We performed the present meta-analysis and aimed to provide a better understanding of the pathogenesis of brain tumors. A literature search of the PubMed, Embase, Web of Science, and Wanfang databases was carried out for potential relevant publications. We calculated the pooled odds ratio (OR) with corresponding 95% confidence interval (95% CI) to assess the association of MTHFR C677T with the susceptibility to brain tumors. We also performed stratified analysis and sensitivity analysis to further estimate the genetic association. All statistical analyses were conducted by the use of STATA 11.0 (STATA Corporation, College Station, TX, USA). Eight case-control studies involving a total of 3,059 cases and 3,324 controls were retrieved according to the inclusion criteria. The overall ORs suggested that the MTHFR C677T variant can exert a risk effect on brain tumor development under the following contrast models (OR(TC vs. CC) = 1.14, 95% CI 1.02-1.27, P OR = 0.018; OR(TT + TC vs. CC)= 1.23, 95% CI 1.01-1.51, P(OR) = 0.043). No significant correlation was identified among the Caucasians, but not among the Asians. In addition, the TC genotype carriers were more susceptible to meningioma when compared with the CC genotype carriers (OR(TC vs. CC) = 1.38, 95% CI 1.15-1.65, P(OR) < 0.001). The MTHFR C677T polymorphism seemed to exert no effect on glioma risk. The current meta-analysis firstly provides evidence that the MTHFR C677T polymorphism may modify the risk for brain tumors, particularly meningioma. The role of the MTHFR C677T variant in brain tumor pathogenesis across diverse ethnicities needs further elucidation by more future studies with large sample size.
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Association between MTHFR 677C>T polymorphism and risk of gliomas: evidence from a meta-analysis. Tumour Biol 2013; 34:2801-7. [PMID: 23765760 DOI: 10.1007/s13277-013-0838-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 05/01/2013] [Indexed: 01/06/2023] Open
Abstract
Folate metabolism plays an important role in carcinogenesis. Methylenetetrahydrofolate reductase (MTHFR) 677C>T polymorphism is a genetic alteration in an enzyme involved in folate metabolism, but its effect on risk of gliomas is still uncertain. To shed some light on these contradictory results from previous studies, we performed a meta-analysis of published data investigating the association between MTHFR 677C>T polymorphism and risk of gliomas. PubMed, Embase, and Web of Science databases were searched for eligible case-control studies. Odds ratios (ORs) and 95 % confidence intervals (CIs) were used to assess the strength of this association. Ten individual case-control studies from six publications with a total of 1,786 cases and 2,076 controls were included into this meta-analysis. There was no obvious heterogeneity under all comparison models of this meta-analysis. Meta-analysis of those ten studies showed that there was no obvious association between MTHFR 677C>T polymorphism and risk of gliomas under all five genetic models (for T versus C, OR = 1.00, 95 % CI 0.90-1.12, P OR = 0.959; for TT versus CC, OR = 1.02, 95 % CI 0.82-1.27, P OR = 0.870; for CT versus CC, OR = 1.02, 95 % CI 0.89-1.18, P OR = 0.733; for TT+CT versus CC, OR = 1.02, 95 % CI 0.90-1.16, P OR = 0.781; for TT versus CT+CC, OR = 0.99, 95 % CI 0.81-1.21, P OR = 0.902). There was also no obvious association between MTHFR 677C>T polymorphism and risk of gliomas in the sensitivity and subgroup analyses of Caucasians. There was no risk of publication bias in this meta-analysis. The evidence from our meta-analysis supports that there is no association between MTHFR 677C>T polymorphism and risk of gliomas.
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The potential effect of gender in CYP1A1 and GSTM1 genotype-specific associations with pediatric brain tumor. Tumour Biol 2013; 34:2709-19. [DOI: 10.1007/s13277-013-0823-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2013] [Accepted: 04/24/2013] [Indexed: 12/21/2022] Open
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Erratum: The association between two polymorphisms in the TS gene and risk of cancer: A systematic review and pooled analysis. Int J Cancer 2013. [DOI: 10.1002/ijc.27998] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Li R, Wang R, Li Y, Li X, Feng Y, Li Y, Jiang C. Association study on MTHFR polymorphisms and meningioma in northern China. Gene 2012; 516:291-3. [PMID: 23276705 DOI: 10.1016/j.gene.2012.12.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Revised: 11/13/2012] [Accepted: 12/04/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND Meningioma is the second most common primary tumor of the central nervous system, and multiple genetic and environmental factors contribute to its etiology. Methylene tetrahydrofolate reductase (MTHFR) is a pivotal enzyme in folate metabolism. We conducted a case-control study to investigate the association of the MTHFR gene and meningioma in a Han population in northern China. METHODS We genotyped two SNPs (C677T and A1298C) using polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP). In this study 317 meningioma patients were compared to 320 normal controls. Data were analyzed by SPSS 13.0 and HaploView software. RESULTS We found a significant difference in the frequency distribution of 677CC and 677TT between cases and control groups; another SNP exhibited no differences in any genotype between the two cohorts. CONCLUSION The results revealed that variations of the MTHFR gene were associated with meningioma; this finding indicates that the MTHFR gene potentially plays an important role in the pathogenesis of meningioma in the Northern Chinese Han population.
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Affiliation(s)
- Ruiyan Li
- The Third Ward of Neurosurgery, the Second Affiliated Hospital of Harbin Medical University, Harbin 150086, China.
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24
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Izmirli M. A literature review of MTHFR (C677T and A1298C polymorphisms) and cancer risk. Mol Biol Rep 2012; 40:625-37. [PMID: 23076526 DOI: 10.1007/s11033-012-2101-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2012] [Accepted: 10/03/2012] [Indexed: 12/18/2022]
Abstract
5,10-Methlenetetrahydrofolate reductase (MTHFR) is one of the most important enzymes for folate metabolism. This enzyme is mapped on chromosome 1, which is located at the end of the short arm (1p36.3). The C677T and A1298C are MTHFR polymorphisms that decrease in vitro MTHFR enzyme activity. Folate metabolism plays a key role in cell metabolism. These reactions are associated with purine-pyrimidine synthesis: DNA, RNA, and protein methylation. Polymorphism is also a factor in biodiversity, and be affected by ethnic heritage and geographic locale. In the case of unknown outcomes, not only should all geographical regions be investigated to ascertain biodiversity, but all populations as well to fully understand the variations in the effect. PUBMED was searched from January 2006 to December 2011 to develop an investigatory pursuit strategy. MTHFR, cancer, C677T, A1298C, and polymorphisms were key words used to focus the search. The literature review included all published relevant cancer types and MTHFR polymorphisms for that 5 years period. All selected polymorphisms data for cancer types was listed in tables for easy access and retrieval.
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Affiliation(s)
- Muzeyyen Izmirli
- Department of Medical Biology, Faculty of Medicine, Bezmialem Vakif University, 34093 Istanbul, Turkey.
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Milne E, Greenop KR, Bower C, Miller M, van Bockxmeer FM, Scott RJ, de Klerk NH, Ashton LJ, Gottardo NG, Armstrong BK. Maternal Use of Folic Acid and Other Supplements and Risk of Childhood Brain Tumors. Cancer Epidemiol Biomarkers Prev 2012; 21:1933-41. [DOI: 10.1158/1055-9965.epi-12-0803] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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da Costa DM, de Lima GPV, Faria MHG, Rabenhorst SHB. Polymorphisms of folate pathway enzymes (methylenetetrahydrofolate reductase and thymidylate synthase) and their relationship with thymidylate synthase expression in human astrocytic tumors. DNA Cell Biol 2011; 31:57-66. [PMID: 21848426 DOI: 10.1089/dna.2011.1273] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Two important polymorphisms of folate cycle enzymes, methylenetetrahydrofolate reductase (MTHFR) C677T and thymidylate synthase (TS) enhancer region (TSER) 28-bp tandem repeat, are related to risk of various types of cancer, including brain tumors, although there are few studies on this subject. A case-control study of these two polymorphisms in astrocytomas of different grades was carried out using polymerase chain reaction-restriction fragment length polymorphism, also determining the immunohistochemical expression of TS. The MTHFR 677 TT genotype was less associated with astrocytic tumors (odds ratio [OR]=0.00; p=0.0238), but the TSER polymorphism did not show any significant association. Combined genotype TT-double repeats/triple repeats (2R/3R) had a protective effect against astrocytomas (OR=0.00; p=0.0388). Expression of TS protein was observed in the majority of cases, with grade IV tumors being the exception. Moreover, the median H-score for the pilocytic astrocytomas was significantly higher when compared with that for diffuse tumors. There was an inverse correlation between the 2R/2R genotype and the highest TS-expressing tumors, and 3R/3R was relatively more frequent among the tumors grouped in the third and fourth quartiles. Our results provide support for the role of MTHFR and TS polymorphism in gliomagenesis, possibly because of the alteration of DNA methylation and repair status. Moreover, high levels of TS expression were detected in these tumors.
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Affiliation(s)
- Débora Menezes da Costa
- Molecular Genetics Laboratory, Department of Pathology and Forensic Medicine, School of Medicine, Federal University of Ceará, Fortaleza, Ceara, Brazil
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Case control study of periconceptional folic acid intake and nervous system tumors in children. Childs Nerv Syst 2010; 26:1727-33. [PMID: 20496070 PMCID: PMC3126107 DOI: 10.1007/s00381-010-1187-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2010] [Accepted: 05/12/2010] [Indexed: 12/17/2022]
Abstract
PURPOSE Since 1992, the Centers for Disease Control and Prevention recommends that women of childbearing age consume 400 µg of folic acid per day to reduce the risk of neural tube defects (NTD). It has been speculated that both NTD and nervous system tumors (NST) may share common mechanisms of altered development. It examines the association between folic acid supplementation and the risk for childhood NST. METHODS Incident cases of children with cancer in Spain registered between 2004 and 2006 were identified through the MACAPE Network Group. Tumors were classified as tumors derived from the neuroectoderm (cases) and those with a mesoderm origin (controls). In a second analysis, NST were further divided into central nervous system tumors (CNST) and sympathetic nervous system tumors (SNST). We compared folic acid supplementation between the groups. RESULTS Overall, folic acid supplementation any time during pregnancy was similar between cases and controls (odds ratio (OR)=1.05; 95% confidence interval (CI) 0.92-1.20). However, supplementation before the 21st and 36th days of gestation resulted in significantly lower NST than in children with mesoderm tumors (OR=0.34; 95% CI 0.17-0.69 and OR=0.58; 95% CI 0.37-0.91, respectively). Preconceptional intakes of folic acid were also lower in NST although marginally nonsignificant (OR=0.44; 95% CI 0.10-1.02). When NST were divided into CNST and SNST, significant differences between tumors of mesoderm origin were only found for CNST. CONCLUSIONS Our results support the hypothesis that folate supplementation reduces the risk of childhood NST, especially CNST. The specific mechanism and cellular role that folate may play in the development of CNST have yet to be elucidated.
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Abstract
Polymorphisms in methionine synthase (MTR) gene may be involved in carcinogenesis by affecting DNA methylation. However, association studies on MTR A2756G polymorphism in cancers have reported conflicting results. Therefore we performed a meta-analysis to better assess the associations. A total of 24 896 cancer patients and 33 862 controls from 52 articles for MTR A2756G were investigated. Overall, individuals carrying MTR 2756GG genotype had a subtly reduced cancer risk under a recessive genetic model (odds ratio (OR), 0.92; P=0.053; 95% confidence interval (95% CI), 0.84-1.00; I(2)=0.0%; P(heterogeneity)=0.61). In the subgroup analyses by ethnicity, 2756GG was associated with a significantly reduced cancer risk in European populations (OR, 0.83; P=0.001; 95% CI, 0.74-0.93; I(2)=0.0%; P(heterogeneity)=0.99). However, in Asian populations, a significantly elevated association between 2756GG genotype and cancer risk was observed (OR, 1.33; P=0.012; 95% CI, 1.06-1.65; I(2)=0.0%; P(heterogeneity)=0.50). In studies stratified by tumor site, there was a significantly reduced risk of acute lymphoblastic leukemia (ALL) (OR, 0.54; P=0.049; 95% CI, 0.29-1.00; I(2)=10.7%; P(heterogeneity)=0.33) and colorectal cancer (OR, 0.63; P=0.004; 95% CI, 0.47-0.87; I(2)=0.0%; P(heterogeneity)=0.73) in European populations. Our study indicates that MTR A2756G polymorphism is a candidate gene polymorphism for cancer susceptibility regardless of environmental factors. Large-scale, well-designed, and population-based studies are required to further investigate gene-gene and gene-environment interactions on MTR A2756G polymorphism and tissue-specific cancer risk in an ethnicity-specific population.
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[Epidemiology of primary brain tumor]. Rev Neurol (Paris) 2009; 165:650-70. [PMID: 19446856 DOI: 10.1016/j.neurol.2009.04.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2008] [Revised: 04/01/2009] [Accepted: 04/03/2009] [Indexed: 01/13/2023]
Abstract
Two main approaches are generally used to study the epidemiology of primary brain tumors. The first approach is to identify risk factors, which may be intrinsic or related to external causes. The second main approach is descriptive. Intrinsic factors potentially affecting risk include genetic predisposition and susceptibility, gender, race, birth weight and allergy. Radiation exposure is the main extrinsic factor affecting risk. A large body of work devoted, among others, to electromagnetic fields and especially cellular phones, substitutive hormonal therapy, pesticides, and diet have been published. To date, results have been discordant. Descriptive epidemiological studies have reported an increasing annual incidence of primary brain tumors in industrialized countries. The main reasons are the increasing age of the population and better access to diagnostic imaging. Comparing incidences from one registry to another is difficult. Spatial and temporal variations constitute one explanation and evolutions in coding methods another. In all registries, weak incidence of primary brain tumors constitute a very important limiting factor. Renewed interest from the neuro-oncological community is needed to obtain pertinent and essential data which could facilitate improved knowledge on this topic.
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