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Guo QN, Wang L, Liu ZY, Wang HD, Wang L, Long JG, Liao SX. Different effects of maternal homocysteine concentration, MTHFR and MTRR genetic polymorphisms on the occurrence of fetal aneuploidy. Reprod Biomed Online 2022; 45:1207-1215. [PMID: 36210274 DOI: 10.1016/j.rbmo.2022.06.024] [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: 02/07/2022] [Revised: 06/20/2022] [Accepted: 06/27/2022] [Indexed: 12/13/2022]
Abstract
RESEARCH QUESTION Do maternal homocysteine (Hcy) concentrations, MTHFR and MTRR genes have effects on the occurrence of fetal aneuploidy? DESIGN A total of 619 aneuploidy mothers and 192 control mothers were recruited in this study. Differences in distributions of maternal MTHFR 677C>T, MTHFR 1298A>C and MTRR 66A>G genetic polymorphisms and maternal Hcy concentrations between aneuploidy mothers and control mothers were analysed. RESULTS The maternal MTHFR 677C>T polymorphism was found to be a risk factor for the occurrence of many fetal non-mosaic aneuploidies studied here, including trisomies 13, 15, 16, 18, 21, 22, TRA and TS. The maternal MTHFR 1298A>C polymorphism was found to be a risk factor specifically associated with the occurrence of fetal trisomy 15 and fetal TS. The maternal MTRR 66A>G polymorphism was found to be a risk factor only specifically associated with the occurrence of fetal trisomy 21. The Hcy concentrations of mothers of trisomies 22, 21, 18, 16, 15 and TS fetuses were significantly higher than the Hcy concentrations of control mothers. CONCLUSIONS Overall, data suggested an association between these maternal polymorphisms and the susceptibility of fetal non-mosaic trisomy and Turner syndrome. However, these three maternal polymorphisms had different associations with the susceptibility of different fetal aneuploidies, and the elevated maternal Hcy concentration appeared to be a likely risk factor for fetal Turner syndrome and fetal trisomies.
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Affiliation(s)
- Qian-Nan Guo
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shanxi 710049, China; Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China
| | - Ling Wang
- Department of Medical Imaging of Henan Provincial People's Hospital, Zhengzhou Henan 450003, China
| | - Zheng-Yan Liu
- Department of Pediatrics, Xinyang Hospital of Traditional Chinese Medicine, Xinyang Henan 464000, China
| | - Hong-Dan Wang
- Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China
| | - Li Wang
- Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China
| | - Jian-Gang Long
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an Shanxi 710049, China.
| | - Shi-Xiu Liao
- Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, People's Hospital of Henan University, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, National Health Commission Key Laboratory of Birth Defects Prevention, Medical Genetic Institute of Henan Province, Zhengzhou Henan 450003, China; Henan Cheng-xin Institute of Forensic Clinical Judicial Authentication, Zhengzhou Henan 450003, China.
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Li J, Feng D, He S, Yang H, Su Z, Ye H. Association of MTHFR 677C > T gene polymorphism with neonatal defects: a meta-analysis of 81444 subjects. J OBSTET GYNAECOL 2022; 42:1811-1822. [PMID: 35282788 DOI: 10.1080/01443615.2022.2039908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Juan Li
- Department of Clinical Laboratory, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Danqin Feng
- Department of Clinical Laboratory, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Shiwei He
- School of Public Health, Xiamen University, Xiamen, China
| | - Hua Yang
- Department of Obstetrics, Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Zhiying Su
- Women and Children’s Hospital, School of Medicine, Xiamen University, Xiamen, China
| | - Huiming Ye
- Department of Clinical Laboratory, Women and Children’s Hospital, School of Medicine, and Department of Laboratory Medicine, School of Public Health, Xiamen University, Xiamen, China
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An Assessment of Selected Molecular and Biochemical Markers of the Folate Pathway as Potential Risk Factors for Fetal Trisomy 21 during the First Trimester of Pregnancy in the Polish Population. J Clin Med 2022; 11:jcm11051190. [PMID: 35268281 PMCID: PMC8911130 DOI: 10.3390/jcm11051190] [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: 11/30/2021] [Revised: 02/17/2022] [Accepted: 02/20/2022] [Indexed: 12/04/2022] Open
Abstract
Are the maternal gene variants MTHFR: c.665C>T, MTHFR: c.1286A>C, MTR: c.2756A>G, MTRR: c.66A>G, RFC1: c.80C>T and TCN2: c.776G>C and blood markers of the folate pathway important factors in assessing the risk of fetal trisomy 21 (fetal-T21)? Twenty pregnant women with a high risk and twenty with a low risk of fetal-T21 underwent prenatal examination. Selected gene variants and folate pathway markers and pregnancy-associated plasma protein A (PAPP-A) and free β-subunit of human chorionic gonadotropin β (free-β-hCG) multiple of the medians (MoMs) were determined. The distributions of the alternative alleles and genotypes of the gene variants did not differ between the studied groups. There was no relationship between PAPP-A and β-hCG MoM values and the presence of allele alternative genotype variants. The occurrence of alternative variants of the selected genes and concentrations of most of the studied folate pathway markers may not play a crucial role in the risk of fetal-T21 in pregnant women. However, the relationships between erythrocyte folate concentrations and the occurrence of alternative variants: c.665C>T MTHFR and c.776G>C TCN2, as well as the methylmalonic acid concentration and the occurrence of alternative variant c.776G>C TCN2 in pregnant women with fetal-T21, encourage further research. So far, of the biochemical markers, maternal PAPP-A and β-hCG MoM values remain independent risk factors for fetal-T21.
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Vraneković J, Babić Božović I, Bilić Čače I, Brajenović Milić B. Methylenetetrahydrofolate Reductase Dimer Configuration as a Risk Factor for Maternal Meiosis I-Derived Trisomy 21. Hum Hered 2021; 85:61-65. [PMID: 33784681 DOI: 10.1159/000515121] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 02/09/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Evidence suggests that the dimer configuration of methylenetetrahydrofolate reductase (MTHFR) enzyme might be destabilized by polymorphisms in monomers at the positions C677T and A1298C. It has been observed that these polymorphisms may lead to stable (CCAA, CCAC, CCCC) and unstable (CTAA, CTAC, TTAA) enzyme dimer configurations. OBJECTIVE The aim of this study was to evaluate the association of the MTHFR enzyme dimer configuration and folate dietary intake with the stage of meiotic nondisjunction in mothers of children with maternally derived trisomy 21. METHODS A total of 119 mothers of children with maternally derived free trisomy 21 were included in the study. The mean maternal age at the time of the birth of the child with trisomy 21 was 32.3 ± 6.4 (range 16-43) years. All mothers were Caucasian. Parental origin of trisomy 21 and meiotic stage of nondisjunction was determined using short tandem repeat markers spanning from the centromere to the telomere of chromosome 21q. The MTHFR C677T and A1298C polymorphism was evaluated by PCR-RFLP. RESULTS Increased frequency of the MTHFR genotype combinations CTAA, CTAC, and TTAA was found in the group of mothers with meiosis I (MI) nondisjunction (p = 0.007). No differences were found between study participants regarding dietary and lifestyles habits. CONCLUSION The risk for MI nondisjunction of chromosome 21 was 4.6-fold higher in cases who had CTAA, CTAC, and TTAA MTHFR genotype combinations and who did not used folic acid supplements in the preconception period.
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Affiliation(s)
- Jadranka Vraneković
- Department of Biology and Medical Genetics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Ivana Babić Božović
- Clinical Institute of Genomic Medicine, University Medical Center Ljubljana, Ljubljana, Slovenia
| | - Iva Bilić Čače
- Department of Pediatrics, Clinical Hospital Center Rijeka, University of Rijeka, Rijeka, Croatia
| | - Bojana Brajenović Milić
- Department of Biology and Medical Genetics, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
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DAMAR İH, ERÖZ R, Kİ̇Lİ̇ÇASLAN Ö. Frequency of hereditary prothrombotic risk factors in patients with Down Syndrome. KONURALP TIP DERGISI 2021. [DOI: 10.18521/ktd.823900] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Jiang M, Huang S, Yuan J, Ma X, Wu X, Zhuo Z, Ren L, Jin Q. Association of MTHFR C677T, MTHFR A1298C and MTRR A66G Polymorphisms with Birth Defects in Southern China. J HARD TISSUE BIOL 2021. [DOI: 10.2485/jhtb.30.297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Minmin Jiang
- Prenatal Diagnosis Center, Guizhou Provincial People’s Hospital
| | - Shengwen Huang
- Prenatal Diagnosis Center, Guizhou Provincial People’s Hospital
| | - Jun Yuan
- Clinical Laboratory, Guiyang Second People’s Hospital
| | - Xingwei Ma
- Prenatal Diagnosis Center, Guizhou Provincial People’s Hospital
| | - Xiaoli Wu
- Prenatal Diagnosis Center, Guizhou Provincial People’s Hospital
| | - Zhaozhen Zhuo
- Prenatal Diagnosis Center, Guizhou Provincial People’s Hospital
| | - Lingyan Ren
- Prenatal Diagnosis Center, Guizhou Provincial People’s Hospital
| | - Qian Jin
- Prenatal Diagnosis Center, Guizhou Provincial People’s Hospital
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Cuckle H, Benn P. Review of epidemiological factors (other than maternal age) that determine the prevalence of common autosomal trisomies. Prenat Diagn 2020; 41:536-544. [PMID: 32895968 DOI: 10.1002/pd.5822] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/24/2020] [Accepted: 09/02/2020] [Indexed: 12/22/2022]
Abstract
The birth prevalence of each common autosomal trisomy (21, 18 and 13) increases with advancing maternal age and this is the most important epidemiological risk factor. Prevalence during pregnancy is also dependent on gestational age. Other factors claimed to influence prevalence include paternal age, ethnicity, family history, premature reproductive aging, parity, twinning, smoking, environmental exposures, maternal medical conditions, and predispositions. We review the evidence for these associations since they may provide insights into causal mechanisms. When investigating potential co-factors it is important to adequately allow for maternal age and minimize its confounding contribution. This is well illustrated by reports of an inverse paternal age effect where there is strong correlation between parental ages. Gestational age at diagnosis, availability of prenatal screening, diagnostic testing, and elective termination of affected pregnancies and healthcare disparities also confound the studies on ethnicity, medical conditions, and predispositions or environmental factors. Data from twin zygosity studies demonstrate the importance of differences in fetal viability for affected pregnancies. We conclude that existing epidemiological evidence for most of the co-factors discussed should currently be considered tenuous; history of Down syndrome, albeit biased, may be an exception. The co-factors may yet provide clues to hitherto poorly understood causal pathways.
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Affiliation(s)
- Howard Cuckle
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Peter Benn
- Department of Genetics and Genome Sciences, University of Connecticut Health Center, Farmington, Connecticut, USA
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Irimie AI, Braicu C, Pasca S, Magdo L, Gulei D, Cojocneanu R, Ciocan C, Olariu A, Coza O, Berindan-Neagoe I. Role of Key Micronutrients from Nutrigenetic and Nutrigenomic Perspectives in Cancer Prevention. ACTA ACUST UNITED AC 2019; 55:medicina55060283. [PMID: 31216637 PMCID: PMC6630934 DOI: 10.3390/medicina55060283] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 05/28/2019] [Accepted: 06/13/2019] [Indexed: 02/06/2023]
Abstract
Regarding cancer as a genetic multi-factorial disease, a number of aspects need to be investigated and analyzed in terms of cancer's predisposition, development and prognosis. One of these multi-dimensional factors, which has gained increased attention in the oncological field due to its unelucidated role in risk assessment for cancer, is diet. Moreover, as studies advance, a clearer connection between diet and the molecular alteration of patients is becoming identifiable and quantifiable, thereby replacing the old general view associating specific phenotypical changes with the differential intake of nutrients. Respectively, there are two major fields concentrated on the interrelation between genome and diet: nutrigenetics and nutrigenomics. Nutrigenetics studies the effects of nutrition at the gene level, whereas nutrigenomics studies the effect of nutrients on genome and transcriptome patterns. By precisely evaluating the interaction between the genomic profile of patients and their nutrient intake, it is possible to envision a concept of personalized medicine encompassing nutrition and health care. The list of nutrients that could have an inhibitory effect on cancer development is quite extensive, with evidence in the scientific literature. The administration of these nutrients showed significant results in vitro and in vivo regarding cancer inhibition, although more studies regarding administration in effective doses in actual patients need to be done.
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Affiliation(s)
- Alexandra Iulia Irimie
- Department of Prosthetic Dentistry and Dental Materials, Division Dental Propaedeutics, Aesthetic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Cornelia Braicu
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Sergiu Pasca
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Lorand Magdo
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Diana Gulei
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Roxana Cojocneanu
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Cristina Ciocan
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
| | - Andrei Olariu
- Nordlogic Software, 10-12, Rene Descartes Street 400486 Cluj-Napoca, Romania.
| | - Ovidiu Coza
- Department of Radiotherapy with High Energies and Brachytherapy, Oncology Institute "Prof. Dr. Ion Chiricuta", Street Republicii, No. 34-36, 400015 Cluj-Napoca, Romania.
- Department of Radiotherapy and Medical Oncology, "Iuliu Hatieganu" University of Medicine and Pharmacy, Street Louis Pasteur, No. 4, 400349 Cluj-Napoca, Romania.
| | - Ioana Berindan-Neagoe
- Research Center for Functional Genomics and Translational Medicine, Iuliu Hatieganu University of Medicine and Pharmacy, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
- MEDFUTURE-Research Center for Advanced Medicine, University of Medicine and Pharmacy Iuliu Hatieganu, 23 Marinescu Street, 40015 Cluj-Napoca, Romania.
- Department of Functional Genomics and Experimental Pathology, "Prof. Dr. Ion Chiricuta" The Oncology Institute, 34-36 Republicii Street, 400015 Cluj-Napoca, Romania.
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Clare CE, Brassington AH, Kwong WY, Sinclair KD. One-Carbon Metabolism: Linking Nutritional Biochemistry to Epigenetic Programming of Long-Term Development. Annu Rev Anim Biosci 2019; 7:263-287. [DOI: 10.1146/annurev-animal-020518-115206] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
One-carbon (1C) metabolism comprises a series of interlinking metabolic pathways that include the methionine and folate cycles that are central to cellular function, providing 1C units (methyl groups) for the synthesis of DNA, polyamines, amino acids, creatine, and phospholipids. S-adenosylmethionine is a potent aminopropyl and methyl donor within these cycles and serves as the principal substrate for methylation of DNA, associated proteins, and RNA. We propose that 1C metabolism functions as a key biochemical conduit between parental environment and epigenetic regulation of early development and that interindividual and ethnic variability in epigenetic-gene regulation arises because of genetic variants within 1C genes, associated epigenetic regulators, and differentially methylated target DNA sequences. We present evidence to support these propositions, drawing upon studies undertaken in humans and animals. We conclude that future studies should assess the epigenetic effects of cumulative (multigenerational) dietary imbalances contemporaneously in both parents, as this better represents the human experience.
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Affiliation(s)
- Constance E. Clare
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
| | - Amey H. Brassington
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
| | - Wing Yee Kwong
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
| | - Kevin D. Sinclair
- School of Biosciences, University of Nottingham, Sutton Bonington, Leicestershire LE12 5RD, United Kingdom
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Baykal S, Batar B, Nalbantoğlu A, Albayrak Y, Hancı H, Potas N, Durankuş F, Beyazyüz M, Karabekiroğlu K. Altered methyltetrahydrofolate reductase gene polymorphism in mothers of children with attention deficit and hyperactivity disorder. Prog Neuropsychopharmacol Biol Psychiatry 2019; 88:215-221. [PMID: 30053573 DOI: 10.1016/j.pnpbp.2018.07.020] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2018] [Revised: 07/02/2018] [Accepted: 07/23/2018] [Indexed: 11/28/2022]
Abstract
Attention Deficit and Hyperactivity Disorder (ADHD) is one of the most common psychiatric disorders in childhood and causes significant functional impairments in children. Behavioral genetic and molecular genetic studies have provided significant evidence in terms of highlighting the etiology of ADHD. Folate deficiency during pregnancy is an established risk factor for ADHD. Polymorphisms in the Methyltetrahydrofolate Reductase (MTHFR) encoding gene, such as A1298C and C667T, are associated with the decreased bioavailability of folate, and this condition can act like folate deficiency. In the literature, no study has investigated MTHFR polymorphisms in mothers of children with ADHD. Sixty-four children diagnosed with ADHD and their mothers as well as 40 healthy children and their mothers participated in this study. MTHFR polymorphisms were investigated in all participants. Comparison of the C677C and A1298C MTHFR polymorphisms in children with and without ADHD revealed no significant differences. We found that the maternal C677C_CT genotype counts, both observed and expected values, were significantly different from those based on Hardy-Weinberg Principle Analysis in the ADHD group. The most important result of this study was that maternal C677C MTHFR gene polymorphisms are significant risk factors in for ADHD, and we argue that children with ADHD are exposed to folate deficiency, even if their mothers received a sufficient amount of folate during pregnancy. This result also highlights one of the genetic factors of ADHD. Further studies should be performed to confirm this finding.
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Affiliation(s)
- Saliha Baykal
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Child and Adolescent Psychiatry, Tekirdağ, Turkey.
| | - Bahadır Batar
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Medical Biology, Tekirdağ, Turkey
| | - Ayşin Nalbantoğlu
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Pediatrics, Tekirdağ, Turkey
| | - Yakup Albayrak
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Psychiatry, Tekirdağ, Turkey
| | - Halil Hancı
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Medical Biology, Tekirdağ, Turkey
| | - Nihan Potas
- Gazi University, Faculty of Economics and Administrative Science, Department of Healthcare Management, Ankara, Turkey
| | - Ferit Durankuş
- Okan University, Faculty of Medicine, Department of Pediatrics, İstanbul, Turkey
| | - Murat Beyazyüz
- Tekirdağ Namık Kemal University, Faculty of Medicine, Department of Psychiatry, Tekirdağ, Turkey
| | - Koray Karabekiroğlu
- Ondokuz Mayıs University, Faculty of Medicine, Department of Child and Adolescent Psychiatry, Samsun, Turkey
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Beksac MS, Beksac AT, Buyukeren M, Tanacan A, Bektas H, Gucer S. Are Congenital Urinary Tract Abnormalities Linked to Maternal Methylenetetrahydrofolate Reductase Polymorphisms in Fetuses of Intentionally Terminated Pregnancies with Oligo- or Anhydramnios ? Fetal Pediatr Pathol 2018; 37:177-183. [PMID: 29737941 DOI: 10.1080/15513815.2018.1461283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
OBJECTIVE We aimed to evaluate fetuses of terminated pregnancies with oligo-or anhydramnios (OAH) to further investigate the association between maternal methylenetetrahydrofolate reductase (MTHFR) polymorphisms and fetal urinary tract malformations. MATERIALS AND METHODS This retrospective study included 16 pregnancies with OAH (with normal fetal karyotype) that were intentionally terminated before 22nd gestational week. Fetal autopsy was performed in all cases. We evaluated cases for presence of DNA methylation pathway-related gene polymorphisms. RESULTS We demonstrated that renal abnormalities and disorders exist in 75% of the cases. Pulmonary system anomalies and single umbilical artery were the most frequently observed associated abnormalities. Polymorphisms with known reduced MTHFR activity were found in 81.8% (9/11) of the cases.Association between urinary system abnormalities and polymorphisms with known reduced MTHFR activity was observed in 88.8% (8/9) of the cases. CONCLUSION Physicians should keep in mind that polymorphisms with known reduced MTHFR activity may be associated with urinary tract abnormalities and OAH.
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Affiliation(s)
- M Sinan Beksac
- a Division of Perinatology, Department of Obstetrics and Gynecology , Hacettepe University , Ankara , Turkey
| | - Alp Tuna Beksac
- b Department of Urology , Hacettepe University , Ankara , Turkey
| | - Melek Buyukeren
- c Division of Neonatology, Department of Pediatrics , Hacettepe University , Ankara , Turkey
| | - Atakan Tanacan
- d Division of Perinatology, Department of Obstetrics and Gynecology , Hacettepe University , Ankara , Turkey
| | - Hatice Bektas
- e Department of Pediatrics , Hacettepe University , Ankara , Turkey
| | - Safak Gucer
- f Division of Pediatric Pathology, Department of Pediatrics , Hacettepe University , Ankara , Turkey
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Balarin MAS, Cintra MTR, Cordeiro F, Naves L, da Silva-Grecco RL. Screening of six polymorphisms related with folate metabolism in parents of individuals with Down syndrome. J Matern Fetal Neonatal Med 2017; 35:3833-3839. [PMID: 29130768 DOI: 10.1080/14767058.2017.1404565] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
OBJECTIVE The study aim to investigate MTHFR C677T, MTHFR A1298C, RFC1 A80G, MTR A2756G, CBS 844ins68, MTRR A66G polymorphisms in Down syndrome (DS) parents. METHODS Polymorphisms were evaluated in 35 mothers and 24 fathers of individuals with free trisomy of chromosome 21 confirmed by karyotype. The control group included 26 mothers and 26 fathers who had no children with DS. The molecular analysis was performed by polymerase chain reaction and restriction fragment length polymorphism (reaction chain polymerase restriction fragment length polymorphism) or polymerase chain reaction. The χ2 test (chi-square) was used to compare allele's differences among the study and the control group. Hardy-Weinberg equilibrium model was performed by χ2 testing. Multiple logistic regression models and binary logistic regression used to determine the association between polymorphisms and parental DS risk. RESULTS This study did not reveal any significant difference in frequencies of polymorphisms. The haplotype analysis did not reveal linkage disequilibrium. The logistic regression analysis did not demonstrate differences between the groups. However, the binary logistic regression showed a higher frequency of the polymorphic homozygote genotype in DS parent group to codominant and dominant model in the RFC1 A80G. CONCLUSION In conclusion, although the screening results were significant only to the RFC1 A80G polymorphism, the other determinations of the genetic factors associated with abnormal chromosome segregation could be helpful in future studies, including other polymorphisms involved in folate metabolism.
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Affiliation(s)
| | | | - Fernanda Cordeiro
- a Departamento de Patologia, Genética e Evolução , Universidade Federal do Triângulo Mineiro , Uberaba , Brazil
| | - Lucila Naves
- a Departamento de Patologia, Genética e Evolução , Universidade Federal do Triângulo Mineiro , Uberaba , Brazil
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