1
|
Esmaiel NN, Ashaat EA, Al-Ettribi GM, Fayez A, Alsaiedi SA, El Ruby MO. Association between MTHFR C677T variant and risk for congenital heart defects in Egyptian children: a case–control study including meta-analysis based on 147 cases and 143 controls. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2023. [DOI: 10.1186/s43042-023-00408-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2023] Open
Abstract
Abstract
Background
Stratification analysis studies showed that ethnicity has a significant association regarding MTHFR C677T variant and congenital heart diseases (CHDs) risk, and many published studies have controversial conclusions toward this association.
Methods
In this study, the association between the MTHFR C677T variant and the risk for CHDs was evaluated in 91 children with CHD and 95 healthy controls, as new cases, by using restriction fragment length polymorphism (RFLP) technique. Besides that, 2 case–control studies in the Egyptian population published before 2021 were included in this meta-analysis. The association was assessed by the odds ratio (OR) with a 95% confidence interval (CI) based on 294 alleles in CHD cases and 286 alleles in controls.
Results
The overall meta-analysis showed a significant association between MTHFR C677T variant and CHDs risk in Egyptian children with heterogeneity (Heterogeneity = 0.001) in all the genetic models with the highly significant association in T versus C allele (pooled OR 1.89, 95% CI 1.31–2.74; p value < 0.0004). The consistency of the genotypes was detected by Hardy–Weinberg equilibrium (HWE).
Conclusions
Our results support the MTHFR -677T allele as a susceptibility factor for CHDs in the Egyptian pediatric patients.
Collapse
|
2
|
Raina JK, Panjaliya RK, Dogra V, Sharma S, Anupriya, Kumar P. "Association of MTHFR and MS/MTR gene polymorphisms with congenital heart defects in North Indian population (Jammu and Kashmir): a case-control study encompassing meta-analysis and trial sequential analysis". BMC Pediatr 2022; 22:223. [PMID: 35468734 PMCID: PMC9036697 DOI: 10.1186/s12887-022-03227-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Accepted: 03/11/2022] [Indexed: 12/01/2022] Open
Abstract
Background The risk of Congenital Heart Defects (CHD) is greatly influenced by variants within the genes involved in folate-homocysteine metabolism. Polymorphism in MTHFR (C677T and G1793A) and MS/MTR (A2756G) genes increases the risk of developing CHD risk, but results are controversial. Therefore, we conducted a case–control association pilot study followed by an up-dated meta-analysis with trial sequential analysis (TSA) to obtain more precise estimate of the associations of these two gene variants with the CHD risk. Methods For case–control study, we enrolled 50 CHD patients and 100 unrelated healthy controls. Genotyping was done by PCR–RFLP method and meta-analysis was performed by MetaGenyo online Statistical Analysis System software. For meta-analysis total number of individuals was as follows: for MTHFR C677T 3450 CHD patients and 4447 controls whereas for MS A2756G 697 CHD patients and 777 controls. Results Results of the original pilot study suggested lack of association for MTHFR C677T and MS A2756G polymorphism with risk of CHD whereas MTHFR G1793A was significantly associated with the disease. On performing meta-analysis, a significant association was observed with MTHFR C677T polymorphism but not with MS A2756G. Trial sequential Analysis also confirmed the sufficient sample size requirement for findings of meta-analysis. Conclusions The results of the meta-analysis suggested a significant role of MTHFR in increased risk of CHD.
Collapse
Affiliation(s)
- Jyotdeep Kour Raina
- Institute of Human Genetics, University of Jammu Jammu and Kashmir, 180006, Jammu, India
| | | | - Vikas Dogra
- Department of Zoology Govt. Degree College, Samba, J&K, Jammu, India
| | - Sushil Sharma
- Department of Neonatology, University Hospital Southampton, Hampshire, UK
| | - Anupriya
- Institute of Human Genetics, University of Jammu Jammu and Kashmir, 180006, Jammu, India
| | - Parvinder Kumar
- Institute of Human Genetics, University of Jammu Jammu and Kashmir, 180006, Jammu, India. .,Department of Zoology, University of Jammu, Jammu and Kashmir, 180006, Jammu, India.
| |
Collapse
|
3
|
Tindborg M, Koch A, Andersson M, Juul K, Geisler UW, Soborg B, Michelsen SW. Heart disease among Greenlandic children and young adults: a nationwide cohort study. Int J Epidemiol 2022; 51:1568-1580. [PMID: 35201265 PMCID: PMC9558066 DOI: 10.1093/ije/dyac024] [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: 12/07/2020] [Accepted: 02/02/2022] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND The incidences of heart disease (HD) and congenital heart disease (CHD) among Inuit in Greenland (GL) and Denmark (DK) are unknown. This study aims to estimate incidence rates (IRs) of HD and CHD among the young Inuit populations in Greenland and Denmark compared with rates among young non-Inuit populations in the same countries. METHODS A register-based nationwide cohort including all individuals living in Greenland and Denmark from birth to age <40 years through 1989-2014 was formed. Ethnicity was considered Inuit/mixed if at least one parent was registered as being born in Greenland. Information on HD and CHD hospitalization was obtained from national inpatient registers using ICD-8 and ICD-10 codes. RESULTS HD IR was lower among individuals living in Greenland compared with those living in Denmark, [73.35GL (95% confidence interval (CI) 68.07 to 79.03)] vs [88.07DK (95% CI 87.38 to 88.76)], whereas CHD IRs were almost similar in the two countries [IR 34.44GL (95% CI 30.89 to 38.40) vs IR 34.67DK (95% CI 34.24 to 35.10)]. Being of Inuit/mixed ethnicity was associated with an increased risk of both HD and CHD compared with non-Inuit in Greenland and Denmark [adjusted hazard ratio HD 2.07GL (95% CI 1.25 to 3.42)] and CHD [2.92GL (95% CI 1.34 to 6.38)]. CONCLUSION HD IR was lower in individuals living in Greenland compared with individuals living in Denmark, whereas the CHD IRs were almost the same for both countries. However, the risk of HD including CHD was higher among individuals of Inuit/mixed ethnicity compared with non-Inuit in both countries, suggesting a role of ethnicity among children and younger adults.
Collapse
Affiliation(s)
- Marie Tindborg
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.,Department of Paediatric and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
| | - Anders Koch
- Department of Internal Medicine, Queen Ingrids Hospital, Nuuk, Greenland.,Department of Infectious Disease Epidemiology and Prevention, Statens Serum Institut, Copenhagen, Denmark.,Department of Infectious Diseases, Rigshospitalet University Hospital, Copenhagen, Denmark.,Ilisimatusarfik, University of Greenland, Nuuk, Greenland
| | - Mikael Andersson
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Klaus Juul
- Department of Paediatric and Adolescent Medicine, Paediatric Cardiology, Rigshospitalet University Hospital, Copenhagen, Denmark
| | | | - Bolette Soborg
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark
| | - Sascha Wilk Michelsen
- Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark.,Department of Paediatric and Adolescent Medicine, Rigshospitalet University Hospital, Copenhagen, Denmark
| |
Collapse
|
4
|
Luo T, Li K, Ling Z, Zhao G, Li B, Wang Z, Wang X, Han Y, Xia L, Zhang Y, Zhou Q, Fang Z, Wang Y, Chen Q, Zhou X, Pan H, Zhao Y, Wang Y, Dong L, Huang Y, Hu Z, Pan Q, Xia K, Li J. De novo mutations in folate-related genes associated with common developmental disorders. Comput Struct Biotechnol J 2021; 19:1414-1422. [PMID: 33777337 PMCID: PMC7966843 DOI: 10.1016/j.csbj.2021.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Revised: 02/14/2021] [Accepted: 02/16/2021] [Indexed: 01/23/2023] Open
Abstract
Folate deficiency is an environmental risk factor for several developmental disorders. De novo mutations (DNMs) also play important etiological roles in various developmental disorders. However, it remains unclear whether DNMs in folate-related genes (FRGs) contribute to developmental disorders. We obtained a list of 1,821 FRGs from folate metabolism pathways and the Comparative Toxicogenomics Database, along with data concerning DNMs in 15,404 cases and 3,391 controls from the Gene4Denovo database. We used a TADA-Denovo model to prioritize candidate disease-associated FRGs, and characterized these genes in terms of genic intolerance, functional networks, and expression patterns. Compared with the controls, FRGs were significantly enriched in likely damaging DNMs (ldDNMs) in patients with developmental disorders (1.54 ≤ odds ratio ≤ 3.39, Padj ≤ 0.0075). Furthermore, FRGs with ldDNMs rather than with likely non-damaging DNMs (lndDNMs) overlapped significantly among the five developmental disorders included in the datasets. The TADA-Denovo model prioritized 96 candidate disease-associated FRGs, which were intolerant to genetic variants. Their functional networks mainly involved pathways associated with chromatin modification, organ development, and signal transduction pathways. DNMT3A, KMT2B, KMT2C, and YY1 emerged as hub FRGs from the protein–protein interaction network. These candidate disease-associated FRGs are preferentially expressed in the excitatory neurones during embryonic development, and in the cortex, cerebellum, striatum, and amygdala during foetal development. Overall, these findings show that DNMs in FRGs are associated with the risk of developmental disorders. Further research on these DNMs may facilitate the discovery of developmental disorder biomarkers and therapeutic targets, enabling detailed, personalized, and precise folate treatment plan.
Collapse
Key Words
- ADD, all five developmental disorders
- ASD, autism spectrum disorder
- CHD, congenital heart disease
- Candidate disease-associated genes
- DNMs, De novo mutations
- De novo mutation
- Developmental disorders
- Dmis, deleterious missense variants
- EE, epileptic encephalopathy
- Expression patterns
- FRGs, folate-related genes
- Folate-related gene
- ID, intellectual disability
- PPI, Protein–protein interaction
- PTV, protein-truncating variants
- RVIS, residual variation intolerance scores
- SNPs, single nucleotide polymorphisms
- TADA, Transmitted And De novo Association
- Tmis, tolerant missense variants
- UDD, undiagnosed developmental disorder
- ldDNMs, likely damaging DNMs
- lndDNMs, likely non-damaging DNMs
- pLI, probability of loss-of-function intolerance
Collapse
Affiliation(s)
- Tengfei Luo
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Kuokuo Li
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
| | - Zhengbao Ling
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Guihu Zhao
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Bin Li
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| | - Zheng Wang
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaomeng Wang
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Ying Han
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Lu Xia
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yi Zhang
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qiao Zhou
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Zhenghuan Fang
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yijing Wang
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Qian Chen
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xun Zhou
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Hongxu Pan
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yuwen Zhao
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yige Wang
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lijie Dong
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Yuanfeng Huang
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Zhengmao Hu
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Qian Pan
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Kun Xia
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China.,School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Jinchen Li
- National Clinical Research Center for Geriatric Disorders, Department of Geriatrics, Xiangya Hospital, Central South University, Changsha, Hunan, China.,Department of Neurology, Xiangya Hospital, Central South University, Changsha, Hunan 410008, China
| |
Collapse
|
5
|
Pi T, Liang YQ, Xia HY, Liu YQ, You LN, Zhu Z, Wang L, Gu X, Jin XF. Prevalence of the methylenetetrahydrofolate reductase 677C>T polymorphism in the pregnant women of Yunnan Province, China. Medicine (Baltimore) 2020; 99:e22771. [PMID: 33157923 PMCID: PMC7647581 DOI: 10.1097/md.0000000000022771] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Mutations in the methylenetetrahydrofolate reductase (MTHFR) gene can result in a reduced ability to utilize folic acid. The MTHFR 677C>T polymorphism in particular has been linked to both birth defects and pregnancy-associated diseases. This study aimed to evaluate the prevalence of the MTHFR 677C>T mutation among pregnant women in Yunnan Province so as to collect baseline data that may be utilized to guide folic acid supplementation efforts and to support related disease prevention programs. We retrospectively reviewed 3387 pregnant women from Yunnan Province. The MTHFR 677C>T polymorphism was identified using polymerase chain reaction (PCR) and DNA sequencing. In total, 1350 (39.9%) subjects were homozygous for the C allele (CC), 1540 (45.4%) subjects were heterozygous (CT), and 497 (14.7%) subjects were homozygous for the T allele (TT). The MTHFR 677C>T polymorphism was found to be present within the studied population, with ∼60% of these patients being either heterozygous or homozygous for the mutant allele and with an overall T allele frequency of 0.37. The frequency of the T allele was significantly higher among pregnant women with complications relative to women with healthy pregnancies, particularly among women <30 years old. As such, the maternal MTHFR 677C>T polymorphism may be a genetic risk factor associated with pregnancy complications and may help identify pregnant women at a high risk of such complications.
Collapse
Affiliation(s)
- Ting Pi
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Yue-qin Liang
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Hong-ying Xia
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Yan-qiu Liu
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Li-na You
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Zhuo Zhu
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Li Wang
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Xi Gu
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
| | - Xing-fang Jin
- Department of Pharmacy, Yan’an Hospital Affiliated to Kunming Medical University
- Key Laboratory of Tumor Immunological Prevention and Treatment of Yunnan Province, Kunming, Yunnan, P.R. China
| |
Collapse
|
6
|
Saleh NY, Salem SS, Abo-El Fotoh WM, Soliman SE, Abo-Haded HM. Angiotensin-converting enzyme insertion/deletion (ACE I/D) gene polymorphism in Egyptian children with congenital heart disease. Birth Defects Res 2020; 112:963-969. [PMID: 32343056 DOI: 10.1002/bdr2.1700] [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: 01/17/2020] [Revised: 03/16/2020] [Accepted: 04/04/2020] [Indexed: 11/11/2022]
Abstract
BACKGROUND Congenital heart diseases (CHDs) are the leading cause of infant deaths worldwide. The relationship between angiotensin-converting enzyme (ACE) gene polymorphism and CHDs is not clear. The aim of this work is to assess the presence of an association between ACE I/D polymorphism and CHD in Egyptian population. SUBJECTS AND METHODS Seventy CHD cases and 70 controls were incorporated in this study. DNA was isolated from their peripheral blood, and then ACE I/D gene polymorphism was tested by polymerase chain reaction (PCR). RESULTS There was no significant difference among the frequencies of the DD, II, and DI genotypes in patients and controls (26 [37.1%], 37 [53.3%], and 4 [5.7%], 5 [6.7%]), 40 (57.2%), 28 (40%), respectively (p value = 1 and OR [95% CI] = 1.1). There was no significant difference between D allele (DD + DI) and II genotype distribution among patients and controls (p value = 1 and OR [95% CI] = 1.2 [0.3-2.9]). Moreover, there was no difference between I allele (II + DI) and DD frequency (p value = 0.2 and OR [95% CI] = 0.6 [0.3-1.2]). CONCLUSIONS ACE I/D gene polymorphism might not be a risk factor of CHD in Egyptian children. Additional widespread studies are needed to affirm these data.
Collapse
Affiliation(s)
- Nagwan Y Saleh
- Department of Pediatrics, Faculty of Medicine, Menoufia University, Shibin el Kom, Egypt
| | - Sherif S Salem
- Department of Pediatrics, Faculty of Medicine, Menoufia University, Shibin el Kom, Egypt
| | - Wafaa Mm Abo-El Fotoh
- Department of Pediatrics, Faculty of Medicine, Menoufia University, Shibin el Kom, Egypt
| | - Shaimaa E Soliman
- Department of Medical Biochemistry, Faculty of Medicine, Menoufia University, Shibin el Kom, Egypt.,Medical Biochemistry Unit, Pathology Department, Faculty of Medicine, Qassim University, Buraydah, Saudi Arabia
| | - Hany M Abo-Haded
- Pediatric Cardiology Unit, Department of Pediatrics, Faculty of Medicine, Mansoura University, Mansoura, Egypt
| |
Collapse
|
7
|
Asad SD, Lopetegui Lia N, Ferrigno BW, Alhabach H. A Migraneur with a Usual Headache: A Near-miss of Cerebral Venous Thrombosis. Cureus 2019; 11:e4393. [PMID: 31223551 PMCID: PMC6555492 DOI: 10.7759/cureus.4393] [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] [Indexed: 11/05/2022] Open
Abstract
Cerebral venous thrombosis (CVT), while rare, is a challenging diagnosis. It can be easily missed as the presenting symptom can be just a mild headache. However, if missed and left untreated, it can lead to multiple complications, even death. There are certain risk factors that should make one suspect CVT, such as pregnancy, puerperium, use of oral contraceptive pills (OCPs) or known underlying hypercoagulable disorder, to name a few. Imaging is required for diagnosis. Anticoagulation, typically long term, is the standard treatment. We present a case of a 25-year-old male who was initially discharged after an emergency department visit with symptomatic treatment for migraine headaches, and was later found to have extensive cerebral venous sinus thrombosis. It is worth emphasizing the importance of having a broad differential diagnosis and a low threshold to obtain imaging studies when patients present with persistent headaches, even in the absence of any obvious risk factors.
Collapse
Affiliation(s)
- Syed Daniyal Asad
- Neurology, University of Connecticut School of Medicine, Farmington, USA
| | - Nerea Lopetegui Lia
- Internal Medicine, University of Connecticut School of Medicine, Farmington, USA
| | - Bryan W Ferrigno
- Neurology, University of Connecticut School of Medicine, Farmington, USA
| | | |
Collapse
|
8
|
Babić Božović I, Stanković A, Živković M, Vraneković J, Mahulja-Stamenković V, Brajenović-Milić B. Maternal LINE-1 DNA Methylation and Congenital Heart Defects in Down Syndrome. Front Genet 2019; 10:41. [PMID: 30787943 PMCID: PMC6372553 DOI: 10.3389/fgene.2019.00041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 01/21/2019] [Indexed: 12/18/2022] Open
Abstract
Background: Down syndrome (DS) is one of the most common chromosomal abnormalities associated with congenital heart defects (CHD), with approximately 40 to 60% of cases showing cardiac defects. This study assessed (i) the association between maternal LINE-1 methylation and the occurrence of CHDs in children with DS and (ii) the impact of endogenous maternal factors (MTHFR C677T polymorphism and maternal age) and exogenous maternal factors (cigarette smoking, alcohol intake, medication use, body mass index and dietary habits such as folate intake) on maternal LINE-1 methylation and on the occurrence of CHD in children with DS. Patients and Methods: The study included 90 mothers of children with DS of maternal origin (49% DS-CHD+ mothers/51% DS-CHD− mothers). LINE-1 DNA methylation was analyzed in peripheral blood lymphocytes by quantification of LINE-1 methylation using the MethyLight method. MTHFR C677T polymorphism genotyping was performed using PCR-RFLP. Results: LINE-1 methylation was not significantly different between DS-CHD+ and DS-CHD− mothers (P = 0.997). Combination of MTHFR C677T genotype/diet and BMI were significant independent predictors of LINE-1 DNA methylation in DS-CHD+ mothers (β −0.40, P = 0.01 and β −0.32, P = 0.03, respectively). In the analyzed multivariate model (model P = 0.028), these two factors explained around 72% of the variance in LINE-1 DNA methylation in mothers of children with DS and CHD. The group with the highest BMI (≥30 kg/m2) had significantly lower LINE-1 methylation than the group with normal BMI (Bonferroni post hoc P = 0.03) and the overweight group (Bonferroni post hoc P = 0.04). The lowest LINE-1 DNA methylation values were found in DS-CHD+ mothers with the CT+TT genotype and a low-folate diet; the values were significantly lower than the values in mothers with the CC genotype and a folate-rich diet (Bonferroni post hoc P = 0.04). Conclusion: Association between maternal LINE-1 methylation and CHD in children with DS was not found. Study showed that the MTHFR genotype/diet combination and BMI were significantly associated with LINE-1 methylation in mothers of children with DS-CHD+. These results highlight the need for a multifactorial approach to assess the roles of endogenous and exogenous maternal factors in maternal LINE-1 DNA methylation and the consequent pathologies in children. More extensive studies in a larger sample may help elucidate these relationships.
Collapse
Affiliation(s)
- Ivana Babić Božović
- Department of Medical Biology and Genetics, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Aleksandra Stanković
- Laboratory for Radiobiology and Molecular Genetics, Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Maja Živković
- Laboratory for Radiobiology and Molecular Genetics, Vinča Institute of Nuclear Sciences, University of Belgrade, Belgrade, Serbia
| | - Jadranka Vraneković
- Department of Medical Biology and Genetics, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Vesna Mahulja-Stamenković
- Department of Gynaecology and Obstetrics, Clinical Hospital Centre Rijeka, University of Rijeka, Rijeka, Croatia
| | - Bojana Brajenović-Milić
- Department of Medical Biology and Genetics, School of Medicine, University of Rijeka, Rijeka, Croatia
| |
Collapse
|
9
|
Interaction of MTHFR C677T polymorphism with smoking in susceptibility to diabetic nephropathy in Chinese men with type 2 diabetes. J Hum Genet 2018; 64:23-28. [PMID: 30397262 DOI: 10.1038/s10038-018-0531-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 09/02/2018] [Accepted: 10/17/2018] [Indexed: 12/17/2022]
Abstract
We investigated the interaction of MTHFR C677T polymorphism (rs1801133) with smoking in susceptibility to diabetic nephropathy (DN) in Chinese men with type 2 diabetes mellitus (T2DM). We studied 655 Chinese men with T2DM, who were divided into two groups (321 with DN and 334 without DN). The genotype of MTHFR C677T polymorphism was detected by real-time polymerase chain reaction. MTHFR TT genotype carried a higher risk of DN compared with the CC genotype (OR = 2.05; P = 0.002). The T allele showed marked association with DN development in patients who smoked, using additive, recessive, and dominant models (OR = 1.60, 1.83, and 1.88, respectively; P = 0.006, 0.002, and 0.04, respectively), which was not observed in the nonsmoking group. Patients with TT and CT genotypes, who smoked had a higher risk of DN compared with the control group (non-smoking with CC genotype; OR = 3.73 and 2.28, respectively; P < 0.001 and P = 0.004, respectively), whereas the other groups were not observed. In conclusion, the T allele of rs1801133 may be a risk factor for DN in Chinese men with T2DM, and synergy appears to exist between the MTHFR rs1801133 and smoking in susceptibility to DN.
Collapse
|
10
|
Yang HL, Yang YL, Yu CH, Shiao SPK. Meta-Prediction of MTHFR Gene Polymorphism and Air Pollution on the Risks of Congenital Heart Defects Worldwide: A Transgenerational Analysis. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2018; 15:ijerph15081660. [PMID: 30081597 PMCID: PMC6121605 DOI: 10.3390/ijerph15081660] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/02/2018] [Accepted: 08/03/2018] [Indexed: 12/18/2022]
Abstract
Congenital heart disease (CHD) is the leading cause of death in children, and is affected by genetic and environmental factors. To investigate the association of air pollution with methylene-tetrahydrofolate reductase (MTHFR) polymorphisms and the risk of CHD, we included 58 study groups of children and parents, with 12,347 cases and 18,106 controls worldwide. Both MTHFR C677T (rs 1801133) and A1298C (rs 1801131) gene polymorphisms were risks for CHD in children with transgenerational effects from their parents. Countries with greater risks of CHD with a pooled risk ratio (RR) > 2 from MTHFR 677 polymorphisms included Germany, Portugal, China, and Egypt for children; and Brazil, Puerto Rico, Mexico, China, and Egypt for mothers. Whereas, countries with greater risk of CHD with RR > 2 from MTHFR 1298 polymorphisms included Taiwan, Turkey, and Egypt for children; and Brazil, China, and Egypt for mothers. Additionally, meta-prediction analysis revealed that the percentages of MTHFR 677TT and TT plus CT polymorphisms together were increased in countries with higher levels of air pollution, with a trend of increased CHD risks with higher levels of air pollution for children (p = 0.07). Our findings may have significant implications for inflammatory pathways in association with MTHFR polymorphisms and future intervention studies to correct for folate-related enzyme deficits resulted from MTHFR polymorphisms to prevent CHDs for future generations.
Collapse
Affiliation(s)
- Hsiao-Ling Yang
- School of Nursing, College of Medicine, National Taiwan University, Taipei 10051, Taiwan.
| | - Ya-Ling Yang
- School of Nursing, College of Medicine, National Taiwan University, Taipei 10051, Taiwan.
| | - Chong Ho Yu
- Department of Psychology, Azusa Pacific University, Azusa, CA 91702, USA.
| | | |
Collapse
|
11
|
Wang L, Yang B, Zhou S, Gao H, Wang F, Zhou J, Wang H, Wang Y. Risk factors and methylenetetrahydrofolate reductase gene in congenital heart disease. J Thorac Dis 2018; 10:441-447. [PMID: 29600076 DOI: 10.21037/jtd.2017.12.08] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Background Congenital heart disease (CHD), which involve congenital cardiovascular malformations that occur during an embryo stage, may be the result of a complex interaction between genetic factors and environmental factors. The homozygous 677 T/T MTHFR gene and potential factors have been associated with CHD. Our objective was to study associations between potential environmental risk factors and methylenetetrahydrofolate reductase (MTHFR) gene polymorphisms in CHD. Methods A total of 346 children with CHD and 237 healthy children were recruited. Their parents were also enlisted in the study and interviewed face-to-face to identify potential environmental risk factors. The MTHFR genotype was analyzed by restriction fragment length polymorphism (RFLP). Interactions between environmental risk factors and MTHFR gene polymorphisms were evaluated by the relative excess risk due to interaction (RERI), the attributable proportion due to interaction (AP), and the synergy index (S). Results There were significant differences in the occupational statuses of the mothers and their levels of drug exposure during gestation between the controls and the cases (P<0.05). These differences significantly increased offspring CHD risk (occupation: OR =5.45, 95% CI: 3.46-8.58; drug exposure: OR =4.91, 95% CI: 2.18-11.09). The frequency of the MTHFR gene 677 TT polymorphism in the mothers who had offspring with CHD was significantly different from that in the non-CHD controls (P<0.05). The frequency of this polymorphism also significantly differed between the children with CHD and the control group (P<0.05). An interaction was identified between the presence of the homozygous 677 TT genotype in the children and the mothers' occupational statuses (RERI =9.43, CI: 0.06-18.91). Conclusions A significant interaction was found between the homozygous 677 T/T MTHFR gene in children and the maternal occupational status and level of drug exposure during gestation. Avoiding or reducing the exposure of the risk factors mentioned above, strengthening pre-pregnancy checkups and guidance might help to reduce the risk of CHD.
Collapse
Affiliation(s)
- Lina Wang
- Peking Union Medical College Graduate School, Beijing 100000, China.,National Research Institute for Health and Family Planning 100000, Beijing, China.,Key Laboratory of Birth Defects Prevention, National Health and Family Planning Commission, Zhengzhou 450000, China
| | - Bo Yang
- Department of Medical Detection, The Third Affiliated Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Shiyuan Zhou
- Key Laboratory of Birth Defects Prevention, National Health and Family Planning Commission, Zhengzhou 450000, China
| | - Huafang Gao
- National Research Institute for Health and Family Planning 100000, Beijing, China
| | - Fengyu Wang
- Key Laboratory of Birth Defects Prevention, National Health and Family Planning Commission, Zhengzhou 450000, China
| | - Jiping Zhou
- Key Laboratory of Birth Defects Prevention, National Health and Family Planning Commission, Zhengzhou 450000, China
| | - Haili Wang
- Key Laboratory of Birth Defects Prevention, National Health and Family Planning Commission, Zhengzhou 450000, China
| | - Yanli Wang
- Key Laboratory of Birth Defects Prevention, National Health and Family Planning Commission, Zhengzhou 450000, China
| |
Collapse
|
12
|
Khatami M, Ratki FM, Tajfar S, Akrami F. Relationship of the MTHFD1 (rs2236225), eNOS (rs1799983), CBS (rs2850144) and ACE (rs4343) gene polymorphisms in a population of Iranian pediatric patients with congenital heart defects. Kaohsiung J Med Sci 2017; 33:442-448. [PMID: 28865601 DOI: 10.1016/j.kjms.2017.05.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 05/12/2017] [Accepted: 05/17/2017] [Indexed: 01/13/2023] Open
Abstract
Congenital heart defects are structural cardiovascular malformations that arise from abnormal formation of the heart or major blood vessels during the fetal period. To investigate the association of 4 single nucleotide polymorphisms (SNPs) in the MTHFD1, eNOS, CBS and ACE genes, we evaluated their relationship with CHD in Iranian patients. In this case-control study, a total of 102 children with CHD and 98 control children were enrolled. Four SNPs including MTHFD1 G1958A, eNOS G894T, CBS C-4673G and ACE A2350G were genotyped by PCR-SSCP, Multiplex ARMS PCR and PCR-RFLP methods and confirmed by direct sequencing. We genotyped 102 patients and 98 controls for four polymorphisms by statistically analysis. There were three SNPs including MTHFD1 G1958A, eNOS G894T and ACE A2350G which might increase the risk of CHD, but CBS C-4673G was not significantly different between patients and controls. (P = 0.017, P = 0.048, P = 0.025 and P = 0.081 respectively). The allele frequencies of three SNPs for MTHFD1 G1958A, eNOS G894T and ACE A2350G in CHD are higher than that in control. Our results show that there is a significant relationship between MTHFD1 G1958A, eNOS G894T and ACE A2350G polymorphisms with CHD. Therefore, The AA and GA genotypes of MTHFD1 G1958A, TT and GT genotypes of eNOS G894T and the AA and GA genotypes of ACE A2350G are susceptible factors for CHD and may increase the risk of CHD.
Collapse
Affiliation(s)
- Mehri Khatami
- Department of Biology, Faculty of Science, Yazd University, Yazd, Iran.
| | | | - Saba Tajfar
- Department of Biology, Faculty of Science, Yazd University, Yazd, Iran
| | - Fatemeh Akrami
- Department of Biology, Faculty of Science, Yazd University, Yazd, Iran
| |
Collapse
|
13
|
Parental Genetic Variants, MTHFR 677C>T and MTRR 66A>G, Associated Differently with Fetal Congenital Heart Defect. BIOMED RESEARCH INTERNATIONAL 2017; 2017:3043476. [PMID: 28758112 PMCID: PMC5512027 DOI: 10.1155/2017/3043476] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/22/2016] [Accepted: 05/09/2017] [Indexed: 11/17/2022]
Abstract
Background Congenital heart defect (CHD) is one of the most common birth defects in the world. The methylenetetrahydrofolate reductase (MTHFR) and methionine synthase reductase (MTRR) genes are two of the most important candidate genes for fetal CHD. However, the correlations between the two genes and fetal CHD were inconsistent in various reports. Therefore, this study is aimed to evaluate the parental effects of the two genes on fetal CHD via three genetic polymorphisms, MTHFR 677C>T (rs1801133), MTHFR 1298 A>C (rs1801131), and MTRR 66A>G (rs1801394). Methods Parents with pregnancy history of fetal CHD were divided into two subgroups: ventricular septal defect (VSD) (21) and non-VSD groups (78). VSD, non-VSD, and 114 control parents (controls) were analyzed in this study. Genotyping of these genetic polymorphisms was done by sequencing. Results The MTHFR 677C>T polymorphism of either mothers or fathers was independently associated with fetal non-VSD (P < 0.05) but not VSD, while the MTRR 66A>G polymorphism was independently associated with fetal VSD (P < 0.05) but not non-VSD. No significance was found for MTHFR 1298A>C polymorphism. Conclusion In either maternal or paternal group, the MTHFR 677C>T polymorphism was independently related to fetal non-VSD, while the MTRR 66A>G polymorphism was independently related to fetal VSD.
Collapse
|
14
|
Zaidi S, Brueckner M. Genetics and Genomics of Congenital Heart Disease. Circ Res 2017; 120:923-940. [PMID: 28302740 DOI: 10.1161/circresaha.116.309140] [Citation(s) in RCA: 299] [Impact Index Per Article: 42.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Revised: 02/15/2017] [Accepted: 02/16/2017] [Indexed: 11/16/2022]
Abstract
Congenital heart disease is the most common birth defect, and because of major advances in medical and surgical management, there are now more adults living with congenital heart disease (CHD) than children. Until recently, the cause of the majority of CHD was unknown. Advances in genomic technologies have discovered the genetic causes of a significant fraction of CHD, while at the same time pointing to remarkable complexity in CHD genetics. This review will focus on the evidence for genetic causes underlying CHD and discuss data supporting both monogenic and complex genetic mechanisms underlying CHD. The discoveries from CHD genetic studies draw attention to biological pathways that simultaneously open the door to a better understanding of cardiac development and affect clinical care of patients with CHD. Finally, we address clinical genetic evaluation of patients and families affected by CHD.
Collapse
Affiliation(s)
- Samir Zaidi
- From the Departments of Genetics (S.Z.) and Pediatrics and Genetics (M.B.), Yale University School of Medicine, New Haven CT
| | - Martina Brueckner
- From the Departments of Genetics (S.Z.) and Pediatrics and Genetics (M.B.), Yale University School of Medicine, New Haven CT.
| |
Collapse
|
15
|
Qian T, Zhang B, Qian C, He Y, Li Y. Association between common polymorphisms in ERCC gene and glioma risk: A meta-analysis of 15 studies. Medicine (Baltimore) 2017; 96:e6832. [PMID: 28514298 PMCID: PMC5440135 DOI: 10.1097/md.0000000000006832] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND A number of studies have investigated the roles of excision repair cross complementation group 1 (ERCC1), ERCC2, and ERCC5 genes polymorphisms in the development of glioma; however, the results were inconsistent. Here, we performed a meta-analysis to investigate the association between 6 polymorphisms in the ERCC genes (rs3212986, rs11615, rs13181, rs1799793, rs238406, rs17655) and glioma risk. METHODS The PubMed, Embase, and Web of science were searched up to September 6, 2016, for studies on the association between ERCC polymorphisms and glioma risk. A fixed-effects or random-effects model was used to calculate the pooled odds ratios based on the results from the heterogeneity tests. Sensitivity and cumulative meta-analyses were also performed. RESULTS A total of 15 studies were eligible for the pooled analysis, conducted in 2 populations of ethnic descent: 8 Europeans and 7 Asians. The results showed that ERCC1 rs3212986 polymorphism was positively associated with glioma [AA vs CC: odds ratio (OR) = 1.298, 95% confidence interval (95% CI) = 1.043-1.230, P = .025]. Association of the ERCC2 rs13181 and rs1799793 polymorphisms was only observed in Asians (CC vs AA for rs13181: OR = 1.539, 95% CI = 1.122-2.109, P = .007; AA vs GG for rs1799793: OR = 1.474, 95% CI = 1.090-1.994, P = .012). However, no association was observed between glioma risk and ERCC1 rs11615, ERCC2 rs238406, and ERCC5 rs17655 polymorphisms. Moreover, sensitivity and cumulative meta-analyses confirmed the stability of the results. CONCLUSIONS Our meta-analysis indicated that the ERCC1 rs3212986 polymorphism and 2 polymorphisms in ERCC2 gene (rs13181 and rs1799793) contributed to the susceptibility of glioma.
Collapse
|
16
|
Nembhard WN, Tang X, Hu Z, MacLeod S, Stowe Z, Webber D. Maternal and infant genetic variants, maternal periconceptional use of selective serotonin reuptake inhibitors, and risk of congenital heart defects in offspring: population based study. BMJ 2017; 356:j832. [PMID: 28264803 PMCID: PMC6283388 DOI: 10.1136/bmj.j832] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Objective To evaluate whether the association between maternal periconceptional use of selective serotonin reuptake inhibitors (SSRIs) and increased risk of congenital heart defects in offspring is modified by maternal or infant genetic variants in folate, homocysteine, or transsulfuration pathways.Design Population based study. DNA from mothers, fathers, and infants was genotyped with an Illumina GoldenGate custom single nucleotide polymorphism panel. A hybrid design based on a log linear model was used to calculate relative risks and Bayesian false discovery probabilities (BFDP) to identify polymorphisms associated with congenital heart defects modified by SSRI use.Data sources Data from the US National Birth Defects Prevention Study on 1180 liveborn infants with congenital heart defects and 1644 controls, born 1997-2008.Main outcome measures Cases included infants with selected congenital heart defects and control infants had no major defects. SSRI use was obtained from telephone interviews with mothers.Results For women who reported taking SSRIs periconceptionally, maternal SHMT1 (rs9909104) GG and AGgenotypes were associated with a 5.9 and 2.4 increased risk of select congenital heart defects in offspring, respectively, versus the AA genotype (BFDP=0.69). Compared with the AA genotype, BHMT (rs492842 and rs542852) GG and AG genotypes were associated with twice the riskof congenital heart defects (BFDP=0.74 and 0.79, respectively). MGST1 (rs2075237) CC and ACgenotypes were associated with an increased risk compared with the GG genotype (8.0 and 2.8, respectively; BFDP=0.79). Single nucleotide polymorphism in infant genes in the folate (MTHFS rs12438477), homocysteine (TRDMT1 rs6602178 and GNMT rs11752813) and transsulfuration (GSTP1 rs7941395 and MGST1 rs7294985) pathways were also associated with an increased risk of congenital heart defects.Conclusions Common maternal or infant genetic variants in folate, homocysteine, or transsulfuration pathways are associated with an increased risk of certain congenital heart defects among children of women taking SSRIs during cardiogenesis.
Collapse
Affiliation(s)
- Wendy N Nembhard
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences and Arkansas Children's Research Institute, Little Rock, AR, 72202, USA
| | - Xinyu Tang
- Division of Biostatistics, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Arkansas Children's Research Institute, Little Rock, AR, 72202 USA
| | - Zhuopei Hu
- Division of Biostatistics, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Arkansas Children's Research Institute, Little Rock, AR, 72202 USA
| | - Stewart MacLeod
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences and Arkansas Children's Research Institute, Little Rock, AR, 72202, USA
| | - Zachary Stowe
- Department of Psychiatry, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, 72205, USA
| | - Daniel Webber
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences and Arkansas Children's Research Institute, Little Rock, AR, 72202, USA
| |
Collapse
|
17
|
Ma L, Jiang Y, Kong X, Yan M, Zhao T, Zhao H, Liu Q, Zhang H, Cao Y, Li P. Synergistic Effect of the MTHFR C677T and EPHX2 G860A Polymorphism on the Increased Risk of Ischemic Stroke in Chinese Type 2 Diabetic Patients. J Diabetes Res 2017; 2017:6216205. [PMID: 28409162 PMCID: PMC5376931 DOI: 10.1155/2017/6216205] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2017] [Revised: 02/14/2017] [Accepted: 03/07/2017] [Indexed: 01/19/2023] Open
Abstract
The aim of this study was to investigate the relationship between the combined effect of MTHFR C677T (rs1801133) and EPHX2 G860A (rs751141) polymorphism and ischemic stroke in Chinese T2DM patients. This case-control study included a total of 626 Chinese T2DM patients (236 T2DM patients with ischemic stroke and 390 T2DM patients without ischemic stroke). The rs1801133 and rs751141 were genotyped using real-time polymerase chain reaction. Statistical analysis was performed with SPSS 17.0. Results showed that the combined effect of MTHFR TT and EPHX2 GG or GA + AA genotype has a higher risk of ischemic stroke compared with the control group (combined effect of MTHFR CC and EPHX2 GA + AA genotypes; OR = 3.46 and OR = 3.42, resp.; P = .001 and P = .002, resp.). The A allele showed marked association with a lower risk of ischemic stroke in patients with the lowest Hcy levels under additive, recessive, and dominant genetic models (OR = 0.45, OR = 0.11, and OR = 0.44, resp.; P = .002, P = .035, and P = .008, resp.), which was not observed in medium or high Hcy level groups. In conclusion, the T allele of rs1801133 and the G allele of rs751141 may be risk factors of ischemic stroke in the Chinese T2DM population.
Collapse
Affiliation(s)
- Liang Ma
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - Yongwei Jiang
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Xiaomu Kong
- Department of Endocrinology, China-Japan Friendship Hospital, Beijing, China
| | - Meihua Yan
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - Tingting Zhao
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - Hailing Zhao
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - Qian Liu
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Haojun Zhang
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - Yongtong Cao
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
- *Yongtong Cao: and
| | - Ping Li
- Graduate School of Peking Union Medical College, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
- *Ping Li:
| |
Collapse
|
18
|
Liu S, Joseph KS, Luo W, León JA, Lisonkova S, Van den Hof M, Evans J, Lim K, Little J, Sauve R, Kramer MS. Effect of Folic Acid Food Fortification in Canada on Congenital Heart Disease Subtypes. Circulation 2016; 134:647-55. [PMID: 27572879 PMCID: PMC4998126 DOI: 10.1161/circulationaha.116.022126] [Citation(s) in RCA: 82] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2016] [Accepted: 06/27/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Previous studies have yielded inconsistent results for the effects of periconceptional multivitamins containing folic acid and of folic acid food fortification on congenital heart defects (CHDs). METHODS We carried out a population-based cohort study (N=5 901 701) of all live births and stillbirths (including late-pregnancy terminations) delivered at ≥20 weeks' gestation in Canada (except Québec and Manitoba) from 1990 to 2011. CHD cases were diagnosed at birth and in infancy (n=72 591). We compared prevalence rates and temporal trends in CHD subtypes before and after 1998 (the year that fortification was mandated). An ecological study based on 22 calendar years, 14 geographic areas, and Poisson regression analysis was used to quantify the effect of folic acid food fortification on nonchromosomal CHD subtypes (n=66 980) after controlling for changes in maternal age, prepregnancy diabetes mellitus, preterm preeclampsia, multiple birth, and termination of pregnancy. RESULTS The overall birth prevalence rate of CHDs was 12.3 per 1000 total births. Rates of most CHD subtypes decreased between 1990 and 2011 except for atrial septal defects, which increased significantly. Folic acid food fortification was associated with lower rates of conotruncal defects (adjusted rate ratio [aRR], 0.73, 95% confidence interval [CI], 0.62-0.85), coarctation of the aorta (aRR, 0.77; 95% CI, 0.61-0.96), ventricular septal defects (aRR, 0.85; 95% CI, 0.75-0.96), and atrial septal defects (aRR, 0.82; 95% CI, 0.69-0.95) but not severe nonconotruncal heart defects (aRR, 0.81; 95% CI, 0.65-1.03) and other heart or circulatory system abnormalities (aRR, 0.98; 95% CI, 0.89-1.11). CONCLUSIONS The association between food fortification with folic acid and a reduction in the birth prevalence of specific CHDs provides modest evidence for additional benefit from this intervention.
Collapse
Affiliation(s)
- Shiliang Liu
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.).
| | - K S Joseph
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Wei Luo
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Juan Andrés León
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Sarka Lisonkova
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Michiel Van den Hof
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Jane Evans
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Ken Lim
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Julian Little
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Reg Sauve
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| | - Michael S Kramer
- From Maternal, Child and Youth Health, Surveillance and Epidemiology Division, Centre for Chronic Disease Prevention, Public Health Agency of Canada, Ottawa, ON, Canada (S. Liu, W.L., J.A.L.); Department of Obstetrics and Gynaecology, University of British Columbia and the Children's and Women's Hospital of British Columbia, Vancouver, BC, Canada (K.S.J., S. Lisonkova, K.L.); School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada (K.S.J.); Department of Obstetrics and Gynaecology, Dalhousie University, NS, Canada (M.V.d.H.); Department of Biochemistry and Medical Genetics, University of Manitoba, Winnipeg, MB, Canada (J.E.); School of Epidemiology, Public Health and Preventive Medicine, University of Ottawa, Ottawa, ON, Canada (J.L.); Departments of Pediatrics and Community Health Sciences, University of Calgary, Calgary, AB, Canada (R.S.); and Departments of Pediatrics and Epidemiology, Biostatistics, and Occupational Health, McGill University, Montreal, QC, Canada (M.S.K.)
| |
Collapse
|
19
|
Wang Y, Zhang H, Yue S, Zhang K, Wang H, Dong R, Yang X, Liu Y, Ma Y. Evaluation of High Resolution Melting for MTHFR C677T Genotyping in Congenital Heart Disease. PLoS One 2016; 11:e0151140. [PMID: 26990189 PMCID: PMC4798616 DOI: 10.1371/journal.pone.0151140] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2015] [Accepted: 02/23/2016] [Indexed: 01/30/2023] Open
Abstract
Background High resolution melting (HRM) is a simple, flexible and low-cost mutation screening technique. The methylenetetrahydrofolate reductase (MTHFR) gene encoding a critical enzyme, potentially affects susceptibility to some congenital defects like congenital heart disease (CHD). We evaluate the performance of HRM for genotyping of the MTHFR gene C677T locus in CHD cases and healthy controls of Chinese Han population. Methods A total of 315 blood samples from 147 CHD patients (male72, female 75) and 168 healthy controls (male 92, female 76) were enrolled in the study. HRM was utilized to genotype MTHFR C677T locus of all the samples. The results were compared to that of PCR-RFLP and Sanger sequencing. The association of the MTHFR C677T genotypes and the risk of CHD was analyzed using odds ratio with their 95% confidence interval (CIs) from unconditional logistic regression. Results All the samples were successfully genotyped by HRM within 1 hour and 30 minutes while at least 6 hours were needed for PCR-RFLP and sequencing. The genotypes of MTHFR C677T CC, CT, and TT were 9.52%, 49.66%, and 40.82% in CHD group but 29.17%, 50% and 20.83% in control group, which were identical using both methods of HRM and PCR-RFLP, demonstrating the sensitivity and specificity of HRM were all 100%. Conclusion MTHFR C677T is a potential risk factor for CHD in our local residents of Shandong province in China. HRM is a fast, sensitive, specific and reliable method for clinical application of genotyping.
Collapse
Affiliation(s)
- Ying Wang
- Research Institute of Pediatrics, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
| | - Haiyan Zhang
- Research Institute of Pediatrics, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
| | - Shuying Yue
- Department of Medicine, Shandong Medical College, Ji’nan, 250002, China
| | - Kun Zhang
- Cardiovascular Department, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
| | - Hui Wang
- Cardiovascular Department, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
| | - Rui Dong
- Research Institute of Pediatrics, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
| | - Xiaomeng Yang
- Research Institute of Pediatrics, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
| | - Yi Liu
- Research Institute of Pediatrics, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
- * E-mail: (YL); (YM)
| | - Yanhui Ma
- Research Institute of Pediatrics, Qilu Children’s Hospital of Shandong University, Ji’nan, 250022, China
- * E-mail: (YL); (YM)
| |
Collapse
|
20
|
Dokter EMJ, van Rooij IALM, Wijers CHW, Groothuismink JM, van der Biezen JJ, Feitz WFJ, Roeleveld N, van der Zanden LFM. Interaction between MTHFR 677C>T and periconceptional folic acid supplementation in the risk of Hypospadias. ACTA ACUST UNITED AC 2016; 106:275-84. [PMID: 26879531 DOI: 10.1002/bdra.23487] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
BACKGROUND Hypospadias is a congenital malformation with both environmental factors and genetic predisposition involved in the pathogenesis. The role of maternal periconceptional folic acid supplement use in the development of hypospadias is unclear. As folate levels may also be influenced by the C677T polymorphism in the methylenetetrahydrofolate reductase (MTHFR) gene, we hypothesize that a gene-environment interaction between this polymorphism and folic acid use is involved in the etiology of hypospadias. METHODS We conducted a case-control study among 855 hypospadias cases and 713 population-based controls from the AGORA data- and biobank. Folic acid supplement use was derived from maternal questionnaires and infant and maternal DNA was used to determine the MTHFR C677T polymorphism using Taqman assays. We performed separate analyses for different hypospadias phenotypes (anterior/middle/posterior). RESULTS Hypospadias was neither associated with folic acid use or the MTHFR C677T polymorphism, nor with their interaction. However, we did find an association with middle hypospadias when no supplements were used (odds ratio = 1.6; 95% confidence interval, 1.1-2.4), especially in infants carrying the CT/TT genotype (odds ratio = 2.5; 95% confidence interval, 1.4-4.7). In addition, more infants with these genotypes seemed to have posterior hypospadias, regardless of folic acid use. CONCLUSION Our study does not suggest a major role for folic acid supplements or the MTHFR C677T polymorphism in the etiology of hypospadias in general, but not using folic acid and/or carrying the MTHFR C677T polymorphism may be associated with middle and posterior hypospadias. Therefore, we stress the importance of studying gene-environment interactions preferably in stratified analyses for different hypospadias phenotypes.
Collapse
Affiliation(s)
- Elisabeth M J Dokter
- Radboud Institute for Health Sciences, Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Iris A L M van Rooij
- Radboud Institute for Health Sciences, Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Charlotte H W Wijers
- Radboud Institute for Health Sciences, Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Johanne M Groothuismink
- Radboud Institute for Health Sciences, Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan Jaap van der Biezen
- Department of Plastic Surgery and Hand Surgery, Medical Centre Leeuwarden, Leeuwarden, The Netherlands
| | - Wout F J Feitz
- Department of Urology, Paediatric Urology, Radboudumc Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Nel Roeleveld
- Radboud Institute for Health Sciences, Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands.,Department of Paediatrics, Radboudumc Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Loes F M van der Zanden
- Radboud Institute for Health Sciences, Department for Health Evidence, Radboud University Medical Center, Nijmegen, The Netherlands
| |
Collapse
|
21
|
Rai V. Methylenetetrahydrofolate Reductase C677T Polymorphism and Recurrent Pregnancy Loss Risk in Asian Population: A Meta-analysis. Indian J Clin Biochem 2016; 31:402-13. [PMID: 27605737 DOI: 10.1007/s12291-016-0554-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Accepted: 01/20/2016] [Indexed: 01/15/2023]
Abstract
The C677T polymorphism of the methylenetetrahydrofolate reductase (MTHFR) gene was implicated to be associated with thrombophilia due to its role in catalyzing the formation of 5-methylenetetrahydrofolate, a co-substrate for the conversion of homocysteine to methionine. Several case-control studies were investigated MTHFR C677T polymorphism as risk for recurrent pregnancy loss (RPL). These studies rendered contradictory results, some indicating that the polymorphism is associated with the risk of RPL whereas others concluded there is no association. To shed light on these inconclusive findings, a meta-analysis of all available studies published from Asian population relating the C677T polymorphism to the risk of RPL was conducted. The following electronic databases were searched without language restrictions: PubMed, Google Scholars, Elsevier and Springer Link up to December, 2015. Meta-analysis was performed using MetaAnalyst and Mix version 1.7. Meta-analysis results suggested that MTHFR C677T polymorphism contributed to the increased RPL risk in Asian population using all five genetic models (for T vs. C: OR 1.35, 95 % CI 1.09-1.68, p = 0.009; for TT + CT vs. CC: OR 1.44, 95 % CI 1.14-1.82, p = 0.006; for CT vs. CC: OR 1.39, 95 % CI 1.07-1.8, p = 0.01; for TT vs. CC: OR 1.79, 95 % CI 1.23.2.6, p = 0.007; for TT vs. CT + CC: OR 1.61, 95 % CI 1.02-2.56, p = 0.04). In conclusion, this meta-analysis demonstrates a strong association between the MTHFR C677T variant and RPL in Asian population and raising the importance of the use of folate in its treatment and prevention.
Collapse
Affiliation(s)
- Vandana Rai
- Human Molecular Genetics Laboratory, Department of Biotechnology, VBS Purvanchal University, Jaunpur, UP 222003 India
| |
Collapse
|
22
|
Methylenetetrahydrofolate Reductase (MTHFR) C677T Polymorphism and Alzheimer Disease Risk: a Meta-Analysis. Mol Neurobiol 2016; 54:1173-1186. [PMID: 26820674 DOI: 10.1007/s12035-016-9722-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2015] [Accepted: 01/13/2016] [Indexed: 01/08/2023]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is key enzyme of folate/homocysteine pathway. Case control association studies on MTHFR C677T polymorphism and Alzheimer's disease (AD) have been repeatedly performed over the last two decades, but the results are inconclusive. The aim of the present study was to assess the risk of MTHFR C677T polymorphism for AD. Forty-one studies were identified by a search of PubMed, Google Scholar, Elsevier, and Springer Link databases, up to January 2015. Odds ratios (ORs) with corresponding 95 % confidence interval (CI) were calculated using fixed effect model or random effect model. The subgroup analyses based on ethnicity were performed. MTHFR C677T polymorphism had a significant association with susceptibility to AD in all genetic models (for T vs C OR = 1.29, 95 % CI = 1.07-1.56, p = 0.003; for TT + CT vs CC OR = 1.29, 95 % CI = 1.19-1.40, p = 0.0004; for TT vs CC OR = 1.31, 95 % CI = 1.16-1.48, p = 0.001; for CT vs CC OR = 1.24, 95 % CI = 1.13-1.35, p < 0.004; and for TT vs CT + CC OR = 1.13, 95 % CI = 1.00-1.28, p = 0.02). Results of present meta-analysis supported that the MTHFR C677T polymorphism was associated with an increased risk of AD.
Collapse
|
23
|
Wen C, Lv JF, Wang L, Zhu WF, Wan FS, Wang XZ. Association of a methylene tetrahydrofolate reductase C677T polymorphism with several blood chemical levels in a Chinese population. Genet Test Mol Biomarkers 2015; 19:24-9. [PMID: 25489783 DOI: 10.1089/gtmb.2014.0213] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND The methylene tetrahydrofolate reductase (MTHFR) C677T polymorphism is associated with hypertension in certain populations. This study investigated the relationship between the MTHFR polymorphism and hypertension and correlated blood lipid indexes, including homocysteine (HCY), lipoprotein (a) [Lp (a)], high-density lipoprotein (HDL), low-density lipoprotein (LDL), apolipoprotein A I (Apo AI), Apo B, glucose (GLU), total cholesterol (TC), and triglyceride (TG), in a Chinese population. MATERIALS AND METHODS A total of 174 patients with hypertension and 634 healthy control individuals from Jiangxi Province were recruited between June 2012 and September 2012 for genotyping of the MTHFR C677T polymorphism using polymerase chain reaction-restriction fragment length polymorphism. Biochemical parameters were also assessed in these subjects and statistically compared to the MTHFR C677T polymorphism and the risk for hypertension. RESULTS HCY and Lp (a) levels were significantly higher in subjects with a MTHFR 677TT genotype than in those with a CC/CT genotype, independent of hypertension. The frequency of the TT genotype and the T allele in hypertension patients was significantly higher than in the healthy controls. Furthermore, in the male hypertension patient group, the average levels of HCY, HDL, Apo AI, and TC were significantly different from those in female hypertension patients (pHCY=0.001, pHDL=0.004, pApo AI<0.001, pTC=0.012). In the male control group, the average levels of HCY, HDL, Apo AI, GLU, and TC were significantly different from those of female controls (pHCY<0.001, pHDL<0.001, pApo AI<0.001, pGLU=0.001, and pTC=0.004). CONCLUSION Our data demonstrate that the MTHFR C677T polymorphism is positively correlated with an increased risk of hypertension through an increase in HCY levels. The blood lipid correlative index was different between male and female hypertension patients and controls.
Collapse
Affiliation(s)
- Can Wen
- 1 Department of Clinical Laboratory Medicine, The Second Affiliated Hospital of Nanchang University , Nanchang, China
| | | | | | | | | | | |
Collapse
|
24
|
Coppedè F. The genetics of folate metabolism and maternal risk of birth of a child with Down syndrome and associated congenital heart defects. Front Genet 2015; 6:223. [PMID: 26161087 PMCID: PMC4479818 DOI: 10.3389/fgene.2015.00223] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 06/10/2015] [Indexed: 11/13/2022] Open
Abstract
Almost 15 years ago it was hypothesized that polymorphisms of genes encoding enzymes involved in folate metabolism could lead to aberrant methylation of peri-centromeric regions of chromosome 21, favoring its abnormal segregation during maternal meiosis. Subsequently, more than 50 small case-control studies investigated whether or not maternal polymorphisms of folate pathway genes could be risk factors for the birth of a child with Down syndrome (DS), yielding conflicting and inconclusive results. However, recent meta-analyses of those studies suggest that at least three of those polymorphisms, namely MTHFR 677C>T, MTRR 66A>G, and RFC1 80G>A, are likely to act as maternal risk factors for the birth of a child with trisomy 21, revealing also complex gene-nutrient interactions. A large-cohort study also revealed that lack of maternal folic acid supplementation at peri-conception resulted in increased risk for a DS birth due to errors occurred at maternal meiosis II in the aging oocyte, and it was shown that the methylation status of chromosome 21 peri-centromeric regions could favor recombination errors during meiosis leading to its malsegregation. In this regard, two recent case-control studies revealed association of maternal polymorphisms or haplotypes of the DNMT3B gene, coding for an enzyme required for the regulation of DNA methylation at centromeric and peri-centromeric regions of human chromosomes, with risk of having a birth with DS. Furthermore, congenital heart defects (CHD) are found in almost a half of DS births, and increasing evidence points to a possible contribution of lack of folic acid supplementation at peri-conception, maternal polymorphisms of folate pathway genes, and resulting epigenetic modifications of several genes, at the basis of their occurrence. This review summarizes available case-control studies and literature meta-analyses in order to provide a critical and up to date overview of what we currently know in this field.
Collapse
Affiliation(s)
- Fabio Coppedè
- Section of Medical Genetics, Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa Pisa, Italy ; Interdepartmental Research Center Nutrafood "Nutraceuticals and Food for Health," University of Pisa Pisa, Italy
| |
Collapse
|
25
|
Study on Environmental Causes and SNPs of MTHFR, MS and CBS Genes Related to Congenital Heart Disease. PLoS One 2015; 10:e0128646. [PMID: 26035828 PMCID: PMC4452709 DOI: 10.1371/journal.pone.0128646] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2015] [Accepted: 04/29/2015] [Indexed: 11/19/2022] Open
Abstract
PURPOSE Congenital heart diseases (CHD) are among the most common birth defects in China. Environmental causes and folate metabolism changes may alter susceptibility to CHD. The aim of this study is to evaluate the relevant risk-factors of children with CHD and their mothers. METHODS 138 children with CHD and 207 normal children for controls were recruited. Their mothers were also enlisted in this study and interviewed following a questionnaire about their pregnant history and early pregnancy situation. Five single nucleotide polymorphisms (SNPs) in methylenetetrahydrofolate reductase (MTHFR), methionine synthase (MS) and cystathionine β-synthase (CBS) of mothers and children were genotyped. RESULTS There were significant differences in the gender of children, occupation of mothers, family history with CHD, history of abortion, history of adverse pregnancy, early pregnancy health, fetus during pregnancy, pesticide exposure and drug exposure in CHD group and control group ( P < 0.05). Logistic regression analyses showed that after adjustment for above factors, MTHFR rs1801131 were significantly associated with their offspring CHD risk in mothers. Compared with the mothers whose MTHFR were rs1801131 AA and AC genotypes, the mothers who got a mutation of MTHFR rs1801131 CC genotypes had a 267% increase in risk of given birth of a CHD children (OR = 3.67,95%CI = 1.12-12.05). Meanwhile, MTHFR rs1801131 were significantly associated with CHD susceptibility in children (OR = 1.42, 95% CI = 1.00-2.44 in additive model). CONCLUSIONS Besides mothers' social and fertility characteristics, our results suggested that the genetic variants in folate metabolism pathway might be one of the most related risk-factors of CHD. MTHFR rs1801131 were identified as loci in Chinese population that were involved in CHD.
Collapse
|
26
|
Zhao CM, Peng LY, Li L, Liu XY, Wang J, Zhang XL, Yuan F, Li RG, Qiu XB, Yang YQ. PITX2 Loss-of-Function Mutation Contributes to Congenital Endocardial Cushion Defect and Axenfeld-Rieger Syndrome. PLoS One 2015; 10:e0124409. [PMID: 25893250 PMCID: PMC4404345 DOI: 10.1371/journal.pone.0124409] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 03/13/2015] [Indexed: 12/17/2022] Open
Abstract
Congenital heart disease (CHD), the most common type of birth defect, is still the leading non-infectious cause of infant morbidity and mortality in humans. Aggregating evidence demonstrates that genetic defects are involved in the pathogenesis of CHD. However, CHD is genetically heterogeneous and the genetic components underpinning CHD in an overwhelming majority of patients remain unclear. In the present study, the coding exons and flanking introns of the PITX2 gene, which encodes a paired-like homeodomain transcription factor 2essential for cardiovascular morphogenesis as well as maxillary facial development, was sequenced in 196 unrelated patients with CHD and subsequently in the mutation carrier's family members available. As a result, a novel heterozygous PITX2 mutation, p.Q102X for PITX2a, or p.Q148X for PITX2b, or p.Q155X for PITX2c, was identified in a family with endocardial cushion defect (ECD) and Axenfeld-Rieger syndrome (ARS). Genetic analysis of the pedigree showed that the nonsense mutation co-segregated with ECD and ARS transmitted in an autosomal dominant pattern with complete penetrance. The mutation was absent in 800 control chromosomes from an ethnically matched population. Functional analysis by using a dual-luciferase reporter assay system revealed that the mutant PITX2 had no transcriptional activity and that the mutation eliminated synergistic transcriptional activation between PITX2 and NKX2.5, another transcription factor pivotal for cardiogenesis. To our knowledge, this is the first report on the association of PITX2 loss-of-function mutation with increased susceptibility to ECD and ARS. The findings provide novel insight into the molecular mechanisms underpinning ECD and ARS, suggesting the potential implications for the antenatal prophylaxis and personalized treatment of CHD and ARS.
Collapse
Affiliation(s)
- Cui-Mei Zhao
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
- Division of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - Lu-Ying Peng
- Division of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - Li Li
- Division of Medical Genetics, Tongji University School of Medicine, Shanghai, China
| | - Xing-Yuan Liu
- Department of Pediatrics, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Juan Wang
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
| | - Xian-Ling Zhang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fang Yuan
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ruo-Gu Li
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xing-Biao Qiu
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yi-Qing Yang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
- Department of Cardiovascular Research Laboratory, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
- Department of Central Laboratory, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
27
|
de Aguiar PKF, Coletta RD, de Oliveira AMLF, Machado RA, Furtado PGC, de Oliveira LA, de Aquino SN, Martelli-Junior H, de Almeida Reis SR, Moreira HSB, Persuhn DC. rs1801133C>T polymorphism inMTHFRis a risk factor for nonsyndromic cleft lip with or without cleft palate in the Brazilian population. ACTA ACUST UNITED AC 2015; 103:292-8. [DOI: 10.1002/bdra.23365] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Ricardo D. Coletta
- Department of Oral Diagnosis; School of Dentistry; State University of Campinas; Piracicaba São Paulo Brazil
| | | | - Renato Assis Machado
- Department of Oral Diagnosis; School of Dentistry; State University of Campinas; Piracicaba São Paulo Brazil
| | | | | | | | - Hercilio Martelli-Junior
- Stomatology Clinic; Dental School; State University of Montes Claros; Montes Claros Minas Gerais Brazil
- Center for Rehabilitation of Craniofacial Anomalies; Dental School; University of José Rosario Vellano; Alfenas Minas Gerais Brazil
| | | | | | - Darlene Camati Persuhn
- Molecular Biology Department - Federal University of Paraíba; João Pessoa Paraíba Brazil
| |
Collapse
|
28
|
Xuan C, Li H, Zhao JX, Wang HW, Wang Y, Ning CP, Liu Z, Zhang BB, He GW, Lun LM. Association between MTHFR polymorphisms and congenital heart disease: a meta-analysis based on 9,329 cases and 15,076 controls. Sci Rep 2014; 4:7311. [PMID: 25472587 PMCID: PMC4255188 DOI: 10.1038/srep07311] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2014] [Accepted: 11/13/2014] [Indexed: 12/30/2022] Open
Abstract
The aim of our study was to evaluate the association between polymorphisms in the methylenetetrahydrofolate reductase (MTHFR) gene and the risk for congenital heart disease (CHD). Electronic literature databases were searched to identify eligible studies published before Jun, 2014. The association was assessed by the odds ratio (OR) with a 95% confidence interval (CI). The publication bias was explored using Begg's test. Sensitivity analysis was performed to evaluate the stability of the crude results. A total of 35 studies were included in this meta-analysis. For the MTHFR C677T polymorphism, we detected significant association in all genetic models for Asian children and the maternal population. Significant association was also detected in T vs. C for a Caucasian paediatric population (OR = 1.163, 95% CI: 1.008–1.342) and in both T vs. C (OR = 1.125, 95% CI: 1.043–1.214) and the dominant model (OR = 1.216, 95% CI:b1.096–1.348) for a Caucasian maternal population. For the MTHFR A1298C polymorphism, the association was detected in CC vs. AC for the Caucasian paediatric population (OR = 1.484, 95% CI: 1.035–2.128). Our results support the MTHFR -677T allele as a susceptibility factor for CHD in the Asian maternal population and the -1298C allele as a risk factor in the Caucasian paediatric population.
Collapse
Affiliation(s)
- Chao Xuan
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R China
| | - Hui Li
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R China
| | - Jin-Xia Zhao
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R China
| | - Hong-Wei Wang
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R China
| | - Yi Wang
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R China
| | - Chun-Ping Ning
- Department of Medical Ultrasonics, The Affiliated Hospital of Qingdao University, Qingdao, P.R China
| | - Zhen Liu
- The Key Laboratory of Hypertension, The Affiliated Hospital of Qingdao University, Qingdao, P.R China
| | - Bei-Bei Zhang
- Graduate School of Medicine, Mie University, Mie, Japan
| | - Guo-Wei He
- 1] TEDA International Cardiovascular Hospital, Tianjin &The Affiliated Hospital of Hangzhou Normal University, Hangzhou, P.R China [2] Department of Surgery, Oregon Health and Science University, Portland, Oregon
| | - Li-Min Lun
- 1] Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, P.R China [2] Medical College of Qingdao University, Qingdao, P.R China
| |
Collapse
|
29
|
Tang X, Nick TG, Cleves MA, Erickson SW, Li M, Li J, MacLeod SL, Hobbs CA. Maternal obesity and tobacco use modify the impact of genetic variants on the occurrence of conotruncal heart defects. PLoS One 2014; 9:e108903. [PMID: 25275547 PMCID: PMC4183535 DOI: 10.1371/journal.pone.0108903] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2014] [Accepted: 08/27/2014] [Indexed: 01/06/2023] Open
Abstract
Conotruncal heart defects (CTDs) are among the most severe birth defects worldwide. Studies of CTDs indicate both lifestyle behaviors and genetic variation contribute to the risk of CTDs. Based on a hybrid design using data from 616 case-parental and 1645 control-parental triads recruited for the National Birth Defects Prevention Study between 1997 and 2008, we investigated whether the occurrence of CTDs is associated with interactions between 921 maternal and/or fetal single nucleotide polymorphisms (SNPs) and maternal obesity and tobacco use. The maternal genotypes of the variants in the glutamate-cysteine ligase, catalytic subunit (GCLC) gene and the fetal genotypes of the variants in the glutathione S-transferase alpha 3 (GSTA3) gene were associated with an elevated risk of CTDs among obese mothers. The risk of delivering infants with CTDs among obese mothers carrying AC genotype for a variant in the GCLC gene (rs6458939) was 2.00 times the risk among those carrying CC genotype (95% confidence interval: 1.41, 2.38). The maternal genotypes of several variants in the glutathione-S-transferase (GST) family of genes and the fetal genotypes of the variants in the GCLC gene interacted with tobacco exposures to increase the risk of CTDs. Our study suggests that the genetic basis underlying susceptibility of the developing heart to the adverse effects of maternal obesity and tobacco use involve both maternal and embryonic genetic variants. These results may provide insights into the underlying pathophysiology of CTDs, and ultimately lead to novel prevention strategies.
Collapse
Affiliation(s)
- Xinyu Tang
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Todd G. Nick
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Mario A. Cleves
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Stephen W. Erickson
- Department of Biostatistics, College of Public Health, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Ming Li
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Jingyun Li
- Biostatistics Program, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Stewart L. MacLeod
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
| | - Charlotte A. Hobbs
- Division of Birth Defects Research, Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas, United States of America
- * E-mail:
| |
Collapse
|
30
|
Li Z, Jun Y, Zhong-Bao R, Jie L, Jian-Ming L. Association between MTHFR C677T polymorphism and congenital heart disease. A family-based meta-analysis. Herz 2014; 40 Suppl 2:160-7. [PMID: 25256053 DOI: 10.1007/s00059-014-4144-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Accepted: 07/23/2014] [Indexed: 12/22/2022]
Abstract
Congenital heart disease (CHD) is the most common type of birth defect. It is suspected that polymorphisms in folate metabolism are associated with an increased risk of CHD, but the conclusion remains unclear. Studies have reported that the MTHFR C677T polymorphism was associated with the development of structural congenital heart malformations. The objective of this study was to conduct a meta-analysis of available studies to identify common polymorphisms in the MTHFR gene in children with CHD and their mothers and to test for an association between genotype and disease. In all, 19 eligible studies comprising 4,219 cases and 20,123 controls were included in this meta-analysis. A significant association was found between the MTHFR C677T polymorphism and CHD risk (OR: 1.26; 95 % CI = 1.06-1.51; p = 0.009) with no strong evidence of heterogeneity (I(2) = 39 %) in the fetal analysis. In the maternal analysis, the MTHFR C677T polymorphism was significantly associated with CHD risk (OR = 1.52; 95 % CI = 1.09-2.11; p = 0.01) with significant heterogeneity (I(2) = 63 %).
Collapse
Affiliation(s)
- Z Li
- Department of Cardiology, Institute of Medical Research, Taizhou People's Hospital, Yingchun Road 210, 225300, Taizhou, Jiangsu Province, China
| | | | | | | | | |
Collapse
|
31
|
Zhu B, Wu X, Zhi X, Liu L, Zheng Q, Sun G. Methylenetetrahydrofolate reductase C677T polymorphism and type 2 diabetes mellitus in Chinese population: a meta-analysis of 29 case-control studies. PLoS One 2014; 9:e102443. [PMID: 25047451 PMCID: PMC4105552 DOI: 10.1371/journal.pone.0102443] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2013] [Accepted: 06/19/2014] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND Methylenetetrahydrofolate reductase (MTHFR), a key enzyme in folate metabolism, had significant effects on the homocysteine levels. The common functional MTHFR C677T polymorphism had been extensively researched. Several studies had evaluated the relationship between MTHFR C677T polymorphism and type 2 diabetes mellitus (T2DM), but the results were still controversial in the Chinese Han population. This meta-analysis was conducted to evaluate the relationship between MTHFR C677T polymorphism and T2DM in the Chinese Han population. METHODS We searched the relevant studies in multiple electronic databases, which published up to December 2013. We reviewed and extracted data from all the included studies on the relationship between MTHFR C677T polymorphism and T2DM in the Chinese Han population. The odds ratios (ORs) and their 95% confidence intervals (95%CIs) were used to evaluate the relationship. Fixed-effects and random-effects meta-analysis were used to pool ORs by the heterogeneity. Publication bias and sensitivity analysis were also examined. RESULTS 29 studies were finally included in our meta-analysis, which contained 4656 individuals with T2DM and 2127 healthy controls. There was a significant relationship between MTHFR C677T polymorphism and T2DM under dominant (OR: 1.70, 95% CI: 1.42-2.02), recessive (OR: 1.48, 95% CI: 1.21-1.80), homozygous (OR: 1.89, 95% CI: 1.47-2.42), heterozygous (OR: 1.58, 95% CI: 1.33-1.87), and additive (OR: 1.46, 95% CI: 1.28-1.68) genetic model in a random-effects model. Subgroup analysis also reached similar results. Sensitivity analysis indicated that the overall result were dependable. CONCLUSIONS There was a significant relationship between MTHFR C677T polymorphism and T2DM in the Chinese Han population. The results of our meta-analysis suggested that MTHFR 677T allele might be a risk genetic factor of T2DM in the Chinese Han population.
Collapse
Affiliation(s)
- Bo Zhu
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, People's Republic of China
- Liaoning Academy of Safety Science, Shenyang, People's Republic of China
| | - Xiaomei Wu
- Department of Clinical Epidemiology and Evidence Medicine, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Xueyuan Zhi
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, People's Republic of China
| | - Lei Liu
- Key Laboratory of Endocrine diseases in Liaoning Province, The First Hospital of China Medical University, Shenyang, People's Republic of China
| | - Quanmei Zheng
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, People's Republic of China
| | - Guifan Sun
- Department of Occupational and Environmental Health, School of Public Health, China Medical University, Shenyang, People's Republic of China
- * E-mail:
| |
Collapse
|
32
|
Wijers CHW, de Blaauw I, Zwink N, Draaken M, van der Zanden LFM, Brunner HG, Brooks AS, Hofstra RM, Sloots CEJ, Broens PMA, Wijnen MH, Ludwig M, Jenetzky E, Reutter H, Marcelis CLM, Roeleveld N, van Rooij IALM. No major role for periconceptional folic acid use and its interaction with the MTHFR C677T polymorphism in the etiology of congenital anorectal malformations. ACTA ACUST UNITED AC 2014; 100:483-92. [PMID: 24841934 DOI: 10.1002/bdra.23256] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Revised: 04/24/2014] [Accepted: 04/29/2014] [Indexed: 12/26/2022]
Abstract
BACKGROUND Both genetic and nongenetic factors are suggested to be involved in the etiology of congenital anorectal malformations (ARM). Maternal periconceptional use of folic acid supplements were inconsistently suggested to play a role in the prevention of ARM. Therefore, we investigated independent associations and interactions of maternal periconceptional folic acid supplement use and the infant and maternal MTHFR (methylenetetrahydrofolate reductase) C677T polymorphisms with the risk of ARM and subgroups of ARM. METHODS A case-control study was conducted among 371 nonsyndromic ARM cases and 714 population-based controls born between 1990 and 2012 using maternal questionnaires and DNA samples from mother and child. Cases were treated for ARM at departments of Pediatric Surgery of the Radboud university medical center, Sophia Children's Hospital-Erasmus MC Rotterdam, and the University Medical Center Groningen in The Netherlands and hospitals throughout Germany. RESULTS No association with folic acid use was present (odds ratio = 1.1; 95% confidence interval: 0.8-1.4) for ARM as a group. Infant and maternal MTHFR C677T polymorphisms were weakly associated with isolated ARM in particular. Lack of folic acid supplement use in combination with infants or mothers carrying the MTHFR C677T polymorphism did not seem to increase the risk of ARM or subgroups of ARM. The relative excess risks due to interaction did not clearly indicate interaction on an additive scale either. CONCLUSION This first study investigating interactions between periconceptional folic acid supplement use and infant and maternal MTHFR C677T polymorphisms in the etiology of ARM did not provide evidence for a role of this gene-environment interaction.
Collapse
Affiliation(s)
- Charlotte H W Wijers
- Department for Health Evidence, Radboud university medical center, Nijmegen, The Netherlands
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
33
|
Zhang Q, Zha D, Dong P, Zhang Y, Zhang W, Liu Y. Association analysis between MTHFR genetic polymorphisms and the risk of congenital heart diseases in Chinese Han population. ACTA ACUST UNITED AC 2014; 66:1259-64. [PMID: 24720776 DOI: 10.1111/jphp.12260] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2014] [Accepted: 03/02/2014] [Indexed: 11/30/2022]
Abstract
OBJECTIVES Congenital heart diseases (CHD) are common birth defects in the world. The methylenetetrahydrofolate reductase (MTHFR) gene is one of the most important candidate genes for the development of CHD. This case-control study aimed to evaluate the effect of MTHFR c.382A>G and c.1129C>T genetic polymorphisms as risk factors for the development of CHD. METHODS A total of 230 CHD patients and 237 non-CHD controls were included in the present study. The genotyping of MTHFR c.382A>G and c.1129C>T genetic polymorphisms were detected by the polymerase chain reaction-restriction fragment length polymorphism and created restriction site-polymerase chain reaction methods, respectively. KEY FINDINGS The alleles/genotypes distribution from these two genetic polymorphisms were statistically associated with the increased risk of CHD (for c.382A>G, GG versus AA: odds ratio (OR) = 2.39, 95% confidence interval (CI), 1.27 to 4.52, P = 0.006; for c.1129C>T, TT versus CC: OR = 2.73, 95% CI, 1.33 to 5.62, P = 0.005). The allele G and genotype GG of c.382A>G and allele T and genotype TT of c.1129C>T genetic polymorphisms might contribute to CHD susceptibility. CONCLUSION These preliminary findings indicate that these two MTHFR genetic polymorphisms are related with the risk of CHD in Chinese Han population, and might be potentially utilized as molecular markers.
Collapse
Affiliation(s)
- Quan Zhang
- Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China; Department of Cardiology, Weifang Medical University, Weifang, Shandong, China
| | | | | | | | | | | |
Collapse
|
34
|
Zhang D, Zhou Y, Han L, Ji H, Li J. The effect of MTHFR C677T polymorphism on type 2 diabetes mellitus with vascular complications in Chinese Han population: a meta-analysis. Endocr J 2014; 61:717-26. [PMID: 24838050 DOI: 10.1507/endocrj.ej14-0071] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Methylenetetrahydrofolate reductase plays an important role in folate metabolism. Individuals who are type 2 diabetes mellitus have greatest risk for the development of vascular complications. The results of studies which assessed the association between MTHFR C677T polymorphism and T2DM with vascular complications were inconsistent in the Chinese Han population. The purpose of this meta-analysis was to assess the associations between MTHFR C677T polymorphism and T2DM with vascular complications in the Chinese Han population. We collected all relevant articles on MTHFR C677T polymorphisms and T2DM with vascular complications in the Chinese Han population in multiple electronic databases which were searched to December 2013. Fixed-effects and random-effects meta-analyses were performed to assess the odds ratios (ORs). Stratified Analysis, sensitivity Analysis and publication bias were examined. A total of 1984 diabetic patients with vascular complications and 1703 single diabetic patients were found in meta-analysis. There was a significant association between MTHFR C677T polymorphisms and T2DM with vascular complications under recessive genetic model, dominant genetic model, homozygous genetic model, heterozygous genetic model and allele comparison. Sensitivity analysis indicated that the overall result was dependable. Our meta-analysis suggests the MTHFR C677T polymorphisms is associated with T2DM with vascular complications in the Chinese Han population.
Collapse
Affiliation(s)
- Dan Zhang
- Department of Endocrinology, Fourth Hospital of China Medical University, Shenyang 110032, People's Republic of China
| | | | | | | | | |
Collapse
|
35
|
Czeizel AE, Dudás I, Vereczkey A, Bánhidy F. Folate deficiency and folic acid supplementation: the prevention of neural-tube defects and congenital heart defects. Nutrients 2013; 5:4760-75. [PMID: 24284617 PMCID: PMC3847759 DOI: 10.3390/nu5114760] [Citation(s) in RCA: 190] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2013] [Revised: 11/02/2013] [Accepted: 11/05/2013] [Indexed: 12/24/2022] Open
Abstract
Diet, particularly vitamin deficiency, is associated with the risk of birth defects. The aim of this review paper is to show the characteristics of common and severe neural-tube defects together with congenital heart defects (CHD) as vitamin deficiencies play a role in their origin. The findings of the Hungarian intervention (randomized double-blind and cohort controlled) trials indicated that periconceptional folic acid (FA)-containing multivitamin supplementation prevented the major proportion (about 90%) of neural-tube defects (NTD) as well as a certain proportion (about 40%) of congenital heart defects. Finally the benefits and drawbacks of three main practical applications of folic acid/multivitamin treatment such as (i) dietary intake; (ii) periconceptional supplementation; and (iii) flour fortification are discussed. The conclusion arrived at is indeed confirmation of Benjamin Franklin's statement: "An ounce of prevention is better than a pound of care".
Collapse
Affiliation(s)
- Andrew E. Czeizel
- Foundation for the Community Control of Hereditary Diseases, Torokvesz lejto 32, Budapest 1026, Hungary; E-Mail:
| | - Istvan Dudás
- Foundation for the Community Control of Hereditary Diseases, Torokvesz lejto 32, Budapest 1026, Hungary; E-Mail:
| | - Attila Vereczkey
- Versys Clinics, Human Reproduction Institute, Madarasz utca 47-49, Budapest 1138, Hungary; E-Mail:
| | - Ferenc Bánhidy
- Second Department of Obstetrics and Gynecology, School of Medicine, Semmelweis University, Ulloi ut 78/a, Budapest 1082, Hungary; E-Mail:
| |
Collapse
|
36
|
Abstract
PURPOSE OF REVIEW To review recent advances in our understanding of the genetic causes of congenital heart defect (CHD). RECENT FINDINGS CHD behaves like a complex genetic trait in most instances. Recent advances in genomics have provided tools for uncovering genetic variants underlying complex traits that are now being applied to study CHD. Massively parallel DNA sequencing has shown that de-novo mutations contribute to approximately 10% of severe CHD and implicated chromatin remodeling in pathogenesis. Genome scanning methods for copy number variants continue to identify lesions underlying CHD, some predisposing to it generally and others having lesion specificity. Gene-environment interactions are being explored, primarily related to the metabolism of folate and homocysteine. Finally, studies are addressing other aspects of complexity for CHD such as mutations in cis-regulatory elements and modifying genes. SUMMARY The genetic architecture of CHD is being elaborated through the use of state-of-the-art genomic approaches. Through these scientific advances, new opportunities for preventing and ameliorating CHD and its comorbidities are anticipated.
Collapse
|
37
|
Zhang H, Ma H, Li L, Zhang Z, Xu Y. Association of methylenetetrahydrofolate dehydrogenase 1 polymorphisms with cancer: a meta-analysis. PLoS One 2013; 8:e69366. [PMID: 23894459 PMCID: PMC3716643 DOI: 10.1371/journal.pone.0069366] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2013] [Accepted: 06/07/2013] [Indexed: 12/18/2022] Open
Abstract
Background Studies investigating the association between single-nucleotide polymorphisms (SNPs) of the methylenetetrahydrofolate dehydrogenase 1 (MTHFD1) and cancer risk report conflicting results. To derive a more precise estimation of the relationship between MTHFD1 polymorphisms and cancer risk, the present meta-analysis was carried out. Methodology/Principal Findings A comprehensive search was conducted to determine all the eligible studies about MTHFD1 polymorphisms and cancer risk. Combined odds ratios (ORs) and 95% confidence intervals (CIs) were used to assess the strength of the association between the MTHFD1 polymorphisms and cancer risk. We investigated by meta-analysis the effects of 2 polymorphisms in MTHFD1: G1958A (17 studies, 12348 cases, 44132 controls) and G401A (20 studies, 8446 cases, 14020 controls). The overall results indicated no major influence of these 2 polymorphisms on cancer risk. For G1958A, a decreased cancer risk was found in acute lymphoblastic leukemia (ALL)/Asians (the dominant: OR = 0.74, 95% CI = 0.58–0.94, P = 0.01; allelic: OR = 0.80, 95% CI = 0.65–0.99, P = 0.04) and other cancers (recessive: OR = 0.80, 95% CI = 0.66–0.96, P = 0.02). For G401A, the data showed that MTHFD1 G401A polymorphism was associated with a decreased colon cancer risk under dominant model (OR = 0.89, 95% CI = 0.80–0.99, P = 0.04). Conclusions The results suggest that MTHFD1 G1958A polymorphism might be associated with a decreased risk of ALL and other cancers. Meanwhile, the MTHFD1 G401A might play a protective role in the development of colon cancer. Large-scale and well-designed case-control studies are necessary to validate the risk identified in the present meta-analysis.
Collapse
Affiliation(s)
- Hongtuan Zhang
- National Key Clinical Specialty of Urology, Second Affiliated Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin, China
| | - Hui Ma
- Department of Gynaecology and Obstetrics, second hospital of Tianjin Medical University, Tianjin Medical University, Tianjin, China
| | - Liang Li
- Laboratory of Population and Quantitative Genetics, School of Life Sciences, Tianjin Medical University, Tianjin, China
| | - Zhihong Zhang
- National Key Clinical Specialty of Urology, Second Affiliated Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin, China
| | - Yong Xu
- National Key Clinical Specialty of Urology, Second Affiliated Hospital of Tianjin Medical University, Tianjin Key Institute of Urology, Tianjin, China
- * E-mail:
| |
Collapse
|