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Modifiable Risk Factors of Non-Syndromic Orofacial Clefts: A Systematic Review. CHILDREN (BASEL, SWITZERLAND) 2022; 9:children9121846. [PMID: 36553290 PMCID: PMC9777067 DOI: 10.3390/children9121846] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Revised: 11/21/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022]
Abstract
OFCs (orofacial clefts) are among the most frequent congenital defects, but their etiology has yet to be clarified. OFCs affect different structures and functions with social, psychological and economic implications in children and their families. Identifying modifiable risk factors is mandatory to prevent the occurrence of non-syndromic OFCs (NSOFCs). PubMed, Cochrane Library, Scopus and Web of Science were searched from 1 January 2012 to 25 May 2022 and a total of 7668 publications were identified. Studies focusing on the risk factors of NSOFCs were selected, leading to 62 case-control and randomized clinical trials. Risk factors were categorized into non-modifiable and modifiable. The first group includes genetic polymorphisms, gender of the newborn, ethnicity, and familiarity. Within the second group, risk factors that can only be modified before conception (consanguinity, parental age at conception, socio-economical and educational level, area of residency and climate), and risk factors modifiable before and after conception (weight, nutritional state, acute and chronic diseases, psychophysical stress, licit and illicit drugs, alcohol, smoke, pollutants and contaminants) have been distinguished. This study provides a wide overview of the risk factors of NSOFCs, focusing on modifiable ones, to suggest new perspectives in education, prevention, medical interventions and clinical research.
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2
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Association of maternal dietary intakes and CBS gene polymorphisms with congenital heart disease in offspring. Int J Cardiol 2020; 322:121-128. [PMID: 32800907 DOI: 10.1016/j.ijcard.2020.08.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 06/24/2020] [Accepted: 08/07/2020] [Indexed: 12/18/2022]
Abstract
BACKGROUND Although it is generally acknowledged that genetic and environmental factors are associated with risk of congenital heart disease (CHD), the causes are not fully understood. This study aimed at assessing the association of maternal dietary intakes, genetic variants of cystathionine beta synthase (CBS) gene and their interactions with risk of CHDs in offspring. METHOD A hospital-based case-control study of 464 mothers with CHD infants and 504 control mothers of health infant was performed. The exposures of interest were maternal dietary intakes in early pregnancy, single nucleotide polymorphisms (SNPs) of CBS gene. RESULTS More frequent intake of pickled vegetables (adjusted odds ratio[aOR] = 1.81; 95% confidence interval[CI]: 1.38-2.37), smoked foods (aOR = 2.00; 95%CI: 1.53-2.60), barbecued foods (aOR = 1.63; 95%CI: 1.19-2.25) and fried foods (aOR = 1.57; 95%CI: 1.22-2.03) were associated with higher risk of CHD, while salted eggs (aOR = 0.20; 95%CI: 0.12-0.33), fish and shrimp (aOR = 0.34; 95%CI: 0.27-0.44), fresh fruits (aOR = 0.49; 95%CI: 0.37-0.66), and milk products (aOR = 0.54; 95%CI: 0.45-0.65) were associated with lower risk of CHD. The SNPs of CBS gene at rs2851391 (T/T vs C/C: aOR = 1.91, 95%CI: 1.15-3.15) and rs234714 (T/T vs C/C: aOR = 2.22, 95%CI: 1.32-3.73) significantly increased the risk of CHD. Additionally, significant interaction effects between maternal dietary intakes and CBS genetic variants on CHD risks were observed. CONCLUSIONS Maternal dietary factors, CBS genetic variants and their interactions were significantly associated with risk of CHD in offspring. However, it is still unclear how these factors jointly work in the development of CHD, and more studies with larger samples and prospective design are required.
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Carinci F, Palmieri A, Scapoli L, Cura F, Borelli F, Morselli PG, Nouri N, Abdali H, Gianni AB, Russillo A, Docimo R, Martinelli M. Non-syndromic cleft palate: Association analysis on three gene polymorphisms of the folate pathway in Asian and Italian populations. Int J Immunopathol Pharmacol 2020; 33:2058738419858572. [PMID: 31663447 PMCID: PMC6822179 DOI: 10.1177/2058738419858572] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Periconceptional folic acid supplementation can reduce the risk of inborn malformations, including orofacial clefts. Polymorphisms of MTHFR, TCN2, and CBS folate-related genes seem to modulate the risk of cleft lip with or without cleft palate (CL/P) in some populations. CL/P and cleft palate only (CPO) are different malformations that share several features and possibly etiological causes. In the present investigation, we conducted a family-based, candidate gene association study of non-syndromic CPO. Three single nucleotide polymorphisms, namely, rs1801133 of MTHFR, rs1801198 of TCN2, and rs4920037 of CBS, were investigated in a sample that included 129 Italian and 65 Asian families. No evidence of association between the three genotyped polymorphisms and CPO was found in the Italian and Asian cases, indeed the transmission disequilibrium test did not detect any asymmetry of transmission of alleles. This investigation, although with some limitation, further supports that CL/P and CPO diverge in their genetic background.
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Affiliation(s)
- Francesco Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Annalisa Palmieri
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Luca Scapoli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Francesca Cura
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Francesco Borelli
- Plastic and Reconstructive Surgery Unit, Maugeri Clinical Scientific Institutes, Pavia, Italy
| | - Paolo Giovanni Morselli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy.,Plastic Surgery Unit, Sant'Orsola Malpighi University Hospital, Bologna, Italy
| | - Nayereh Nouri
- Department of Genetics and Molecular Biology, Medical School, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Hossein Abdali
- Craniofacial and Cleft Research Center, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Aldo Bruno Gianni
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.,Maxillofacial and Dental Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Antonio Russillo
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy.,Maxillofacial and Dental Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Raffaella Docimo
- Department of Clinical Sciences and Translational Medicine, University of Tor Vergata, Rome, Italy
| | - Marcella Martinelli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
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4
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Carinci F, Palmieri A, Scapoli L, Cura F, Abenavoli F, Giannì AB, Russillo A, Docimo R, Martinelli M. Association between oral cleft and transcobalamin 2 polymorphism in a sample study from Nassiriya, Iraq. Int J Immunopathol Pharmacol 2020; 33:2058738419855571. [PMID: 31663440 PMCID: PMC6822189 DOI: 10.1177/2058738419855571] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Orofacial clefts are common congenital defects whose prevalence differs between geographical regions and ethnic groups. The inheritance is complex, involving the contribution of both genetic and environmental factors. The involvement of genes belonging to the folate pathway is still matter of debate, with strong evidences of association and conflicting results. After demonstrating the contribution, for a sample from the Italian population, of common mutations mapping on three genes of the folate pathway, our group tried to unravel their contribution in independent sample studies with different ethnicity. In the present investigation a set of 34 triads with oral cleft from Nassiriya, Iraq, has been genotyped for rs1801133 of MTHFR, rs1801198 of TCN2, and rs4920037 of CBS polymorphisms. Association analysis evidenced a decreased risk of cleft for children carrying the 667G allele at TCN2 gene (P = 0.02). This evidence further supported the relationship between polymorphisms of folate related genes and oral clefts, and outlined the relevance of studying populations having different ethnicity.
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Affiliation(s)
- Francesco Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - Annalisa Palmieri
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Luca Scapoli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - Francesca Cura
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | | | - Aldo Bruno Giannì
- Maxillofacial and Dental Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Antonio Russillo
- Maxillofacial and Dental Unit, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milan, Italy
| | - Raffaella Docimo
- Department of Clinical Sciences and Translational Medicine, University of Rome Tor Vergata, Rome, Italy
| | - Marcella Martinelli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
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Association between cystathionine beta-synthase c.844ins68 polymorphism and risk of non-syndromic cleft lip/palate: A meta-analysis of family-based and case-control studies. Int Orthod 2019; 17:652-659. [PMID: 31495752 DOI: 10.1016/j.ortho.2019.08.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE Both genetics and environmental factors play a role in the occurrence of non-syndromic cleft lip/palate (NSCL/P). This meta-analysis evaluated the association between cystathionine beta-synthase (CBS) c.844ins68 polymorphism and risk of NSCL/P in family-based and case-control studies. MATERIALS AND METHODS The PubMed, Web of Science, Scopus, and Cochrane Library databases were searched for articles published until September 2018. RevMan 5.3 software was used to calculate the odds ratio (OR) for the association between CBS c.844ins68 polymorphism and risk of NSCL/P by using five genetic models in the studies. The transmission disequilibrium test (TDT) was conducted for family-based studies. RESULTS Three case-control and three family-based studies were evaluated. Based on the analysis of five genetic models, risk of NSCL/P was not related to CBS c.844ins68 polymorphism in case-control studies. The results of family-based studies did not show any association between the CBS c.844ins68 allele and NSCL/P either. CONCLUSIONS The results of this meta-analysis showed that there was no association between CBS c.844ins68 polymorphism and risk of NSCL/P; therefore, this polymorphism does not play a role in susceptibility to NSCL/P.
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Imani MM, Lopez-Jornet P, López EPF, Ghanbari F, Sadeghi M. Association of Betaine-Homocysteine S-Methyl Transferase (rs3797546 and rs3733890) polymorphisms with non-syndromic cleft lip/palate: A meta-analysis. Int Orthod 2019; 17:643-651. [PMID: 31451344 DOI: 10.1016/j.ortho.2019.08.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
OBJECTIVE Non-syndromic cleft lip/palate (NSCL/P) has a multifactorial and polygenic aetiology. The role of genetics in its occurrence has not been fully clarified. The present meta-analysis aimed to evaluate the association of betaine-homocysteine S-methyltransferase (BHMT) polymorphisms (rs3797546 and rs3733890) with the risk of NSCL/P. MATERIALS AND METHODS PubMed/Medline, Scopus, Cochrane Library, and Web of Science databases were systematically searched for articles published up until December 2018 with no language restriction. Quality evaluation of each study was performed by the Newcastle-Ottawa Scale (NOS). The crude odds ratio (OR) and 95% confidence interval (CI) were calculated for each study by RevMan 5.3 software, and a funnel plot analysis was performed by the CMA 2.0 software using the Egger's and Begg's tests. RESULTS Review of the four selected studies revealed that the CC genotype of rs3797546 polymorphism significantly increased the risk of NSCL/P. No association was noted between NSCL/P risk and rs3733890 polymorphism except in Chinese (elevated risk of NSCL/P) and Polish (decreased risk of NSCL/P) populations. CONCLUSIONS According to the present meta-analysis, rs3733890 polymorphism does not play a role in susceptibility to NSCL/P; whereas, rs3797546 polymorphism may play a role in susceptibility to NSCL/P. Future studies are required to examine the association between BHMT polymorphisms and the NSCL/P risk in different ethnicities with a larger sample size.
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Affiliation(s)
- Mohammad Moslem Imani
- Department of Orthodontics, School of Dentistry, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Pia Lopez-Jornet
- Facultad de Medicina y Odontologia Universidad de Murcia, Hospital Morales Meseguer, Clinica Odontologic Adv Marques Velez s/n, 30008 Murcia, Spain
| | - Eduardo Pons-Fuster López
- Insitituto Murciano de Investigación Biomédica, Murcia, Campus de Ciencias de la Salud, Carretera Buenavista s/n, 30120 El Palmar, Murcia, Spain
| | - Fatemeh Ghanbari
- Department of Orthodontics, Dental Branch, Islamic Azad University, Tehran, Iran
| | - Masoud Sadeghi
- Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran; Students Research Committee, Kermanshah University of Medical Sciences, Kermanshah, Iran.
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Wang P, Wu T, Schwender H, Wang H, Shi B, Wang ZQ, Yuan Y, Liu DJ, Wang MY, Li J, Zhou ZB, Zhu HP, Beaty TH. Evidence of interaction between genes in the folate/homocysteine metabolic pathway in controlling risk of non-syndromic oral cleft. Oral Dis 2018; 24:820-828. [PMID: 29356306 DOI: 10.1111/odi.12831] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2017] [Revised: 12/20/2017] [Accepted: 01/09/2018] [Indexed: 01/09/2023]
Abstract
OBJECTIVE Little consistent evidence is available for the association between the risk of non-syndromic cleft lip with or without cleft palate (NSCL/P) and any of the individual genes in the folate/homocysteine metabolic pathway. We investigated the genes in the folate pathway to further clarify its potential influence on the risk of NSCL/P considering gene-gene (G×G) interaction. SUBJECTS AND METHODS We selected markers in 18 genes from the pathway and applied Cordell's method to test for G×G interaction using 1,908 NSCL/P case-parent trios ascertained in an international consortium where a genomewide association study (GWAS) of oral clefts was conducted. RESULTS We found intriguing signals among Asian and European ancestry groups for G×G interaction between markers in betaine-homocysteine methyltransferase gene (BHMT/BHMT2) and dimethylglycine dehydrogenase gene (DMGDH) attaining genomewide significance. In the pooled data, the top significant interaction was found between rs13158309 (BHMT) and rs10514154 (DMGDH, p = 1.45 × 10-12 ). CONCLUSIONS Our study illustrated the importance of taking into account potential G×G interaction for genetic association analysis in NSCL/P, and this study suggested both BHMT/BHMT2 and DMGDH should be considered as candidate genes for NSCL/P in future studies.
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Affiliation(s)
- P Wang
- School of Public Health, Peking University, Beijing, China.,Department of Statistics and Information, Beijing Center for Disease Prevention and Control & Beijing Research Center for Preventive Medicine, Beijing, China
| | - T Wu
- School of Public Health, Peking University, Beijing, China.,Key Laboratory of Reproductive Health, Ministry of Health, Beijing, China
| | - H Schwender
- Mathematical Institute, Heinrich Heine University Duesseldorf, Duesseldorf, Germany
| | - H Wang
- School of Public Health, Peking University, Beijing, China
| | - B Shi
- State Key Laboratory of Oral Disease, West China School of Stomatology, Sichuan University, Chengdu, China
| | - Z Q Wang
- School of Public Health, Peking University, Beijing, China
| | - Y Yuan
- School of Public Health, Peking University, Beijing, China
| | - D J Liu
- School of Public Health, Peking University, Beijing, China
| | - M Y Wang
- School of Public Health, Peking University, Beijing, China
| | - J Li
- Pediatric Dentistry, Peking University School of Stomatology, Beijing, China
| | - Z B Zhou
- Oral and Maxillofacial Surgery, Peking University School of Stomatology, Beijing, China
| | - H P Zhu
- Oral and Maxillofacial Surgery, Peking University School of Stomatology, Beijing, China
| | - T H Beaty
- School of Public Health, Johns Hopkins University, Baltimore, MD, USA
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8
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Tettamanti L, Avantaggiato A, Nardone M, Silvestre-Rangil J, Tagliabue A. Cleft palate only: current concepts. ACTA ACUST UNITED AC 2017; 10:45-52. [PMID: 28757935 DOI: 10.11138/orl/2017.10.1.045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cleft palate only (CPO) is one of the most common congenital malformations worldwide. The etiopathogenesis of CPO is not completely understood. Environmental factors, such as smoking, alcohol consumption, intake of drugs during pregnancy, advanced paternal age, have been demonstrated to be a risk of CPO, but conflicting results have also been published. Insufficient intake of folic acid during the pregnancy has been suggested to increase the risk for CPO. The demonstrated risk for siblings and the higher risk for monozygotic twins suggest a genetic etiopathogenesis for CPO. In some cases of CPO a prevalent mode of inheritance has been reported, but oligogenic models with reduced penetrance, and the risk related to environmental factors have also been proved. One of the first manifestations associated with CPO is difficulty with feeding. Aerophagia is a problem in these infants with CPO and requires more frequent burping and slower feeding. The inability to generate intraoral breath pressure due to nasal air emission in CPO children frequently manifests as articulation difficulties, particularly consonant weakness, and unintelligible speech. Hearing disorders are prevalent among individuals with CPO, as a result of chronic otitis media with effusion due to eustachian tube dysfunction. A multidisciplinary team is essential to manage the many aspects of CPO. In treating CPO, the reconstructive surgeon works in cooperation with otolaryngologists, dentists and orthodontists, speech pathologists, audiologists, geneticists, psychiatrists, maxillofacial surgeons, social workers, and prosthodontists. CPO can be considered a genetically complex disease, but new knowledge and new therapeutic approaches have greatly improved the quality of life of these children. Prenatal diagnosis is an important step in the treatment of this disease.
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Affiliation(s)
- L Tettamanti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - A Avantaggiato
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - M Nardone
- Ministry of Public Health, Rome, Italy
| | | | - A Tagliabue
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
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9
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Tettamanti L, Avantaggiato A, Nardone M, Palmieri A, Tagliabue A. New insights in orofacial cleft: epidemiological and genetic studies on italian samples. ACTA ACUST UNITED AC 2017; 10:11-19. [PMID: 28757931 DOI: 10.11138/orl/2017.10.1.011] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Cleft of the lip and/or palate (CL±P) is the most common congenital craniofacial anomaly affecting around 1 in 700 live births worldwide. Clefts of the human face can be classified anatomically as cleft lip only (CL), cleft palate only (CP), cleft lip and palate (CLP) or a combined group of cleft lip with or without cleft palate (CL±P), based on differences in embryologic development. CL±P has a genetic base and several linkage and association analyses have been performed in order to obtain important information about the role of candidate genes in its onset; not less important are gene-environment interactions that play an increasing role in its aetiology. In CL±P, several loci have been seen associated with the malformation, and, in some cases, a specific gene mapping in a locus has also been identified as susceptibility factor. In CP, one gene has been found, but many more are probably involved. In this short review the genetic studies carried out on CL±P, and the interaction with environmental factors (alcohol, smoking, drugs) are discussed.
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Affiliation(s)
- L Tettamanti
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - A Avantaggiato
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Ferrara, Italy
| | - M Nardone
- Ministry of Public Health, Rome, Italy
| | - A Palmieri
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Bologna, Italy
| | - A Tagliabue
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
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Marini NJ, Yang W, Asrani K, Witte JS, Rine J, Lammer EJ, Shaw GM. Sequence variation in folate pathway genes and risks of human cleft lip with or without cleft palate. Am J Med Genet A 2016; 170:2777-2787. [PMID: 27604992 DOI: 10.1002/ajmg.a.37874] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2016] [Accepted: 07/14/2016] [Indexed: 12/27/2022]
Abstract
In an effort to comprehensively interrogate genetic variation in the folate pathway for risk of cleft lip with or without cleft palate (CLP), we evaluated 504 common and rare variants in 35 folate-related genes in a panel of 330 infants with CLP and 367 non-malformed controls. Odds ratios (OR) with 95% confidence intervals were computed for common genotypes. A Case-Control Difference metric was calculated for rare variants to highlight differentially occurring alleles. Interactions between variants and a maternal folate intake variable were also evaluated. In gene-only results, significant odds ratios were observed for multiple variants in the BHMT/BHMT2/DMGDH gene cluster, particularly in Hispanic infants. Also in this cluster, rare variant analysis highlighted a substantial case-control difference in BHMT rs60340837 (synonymous Y284Y). In Hispanics, the ALDH1L1 I812V variant (rs4646750) was the most significant risk allele: OR = 3.8 (95%CI = 1.6-9.2) when heterozygous. In non-Hispanic white infants, we observed significant risk for AHCYL2 rs1095423 (homozygous OR = 3.0, 95%CI 1.1-7.8) and the 68 bp CBS insertion (c.844ins68; heterozygous OR = 2.4, 95%CI = 1.1-5.3). Rare variant analysis in this group revealed case-control differences in MTRR and several other methionine cycle genes, a process implicated previously in clefting risk. In women with low folate intake specifically, increased risks were observed for CBS rs2851391 (OR = 3.6, 95%CI = 1.3-9.6) and the R259P nonsynonymous variant of TCN2 (rs1801198; OR = 2.8, 95%CI = 1.2-6.3). This comprehensive study provides further direction on candidate loci to help disentangle the folate-related developmental phenomena in human clefting risk. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Nicholas J Marini
- Department of Molecular and Cellular Biology, California Institute for Quantitative Biosciences, University of California, Berkeley, California.
| | - Wei Yang
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California
| | - Kripa Asrani
- Department of Molecular and Cellular Biology, California Institute for Quantitative Biosciences, University of California, Berkeley, California
| | - John S Witte
- Department of Epidemiology and Biostatistics and Institute of Human Genetics, University of California, San Francisco, California
| | - Jasper Rine
- Department of Molecular and Cellular Biology, California Institute for Quantitative Biosciences, University of California, Berkeley, California
| | - Edward J Lammer
- UCSF Benioff Children's Hospital Oakland, Oakland, California
| | - Gary M Shaw
- Department of Pediatrics, Stanford University School of Medicine, Stanford, California
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11
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Goffinet L, Oussalah A, Guéant-Rodriguez RM, Chery C, Basha M, Avogbe PH, Josse T, Jeannesson E, Rouyer P, Flayac J, Gerard P, Le Touze A, Bonin-Goga B, Goga D, Simon E, Feillet F, Vikkula M, Guéant JL. Cystathionine β-synthase genetic variant rs2124459 is associated with a reduced risk of cleft palate in French and Belgian populations. J Med Genet 2016; 53:828-834. [DOI: 10.1136/jmedgenet-2016-104111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2016] [Revised: 07/16/2016] [Accepted: 07/20/2016] [Indexed: 12/27/2022]
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12
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Aslar Oner D, Tastan H. Association of MSX1 c.*6C > T Variant with Nonsyndromic Cleft Lip With or Without Cleft Palate in Turkish Patients. Genet Test Mol Biomarkers 2016; 20:402-5. [DOI: 10.1089/gtmb.2015.0341] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Affiliation(s)
- Deniz Aslar Oner
- Department of Biology, Faculty of Science, Gazi University, Ankara, Turkey
| | - Hakki Tastan
- Department of Biology, Faculty of Science, Gazi University, Ankara, Turkey
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13
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Oner DA, Tastan H. Identification of Novel Variants in the PVRL1 Gene in Patients With Nonsyndromic Cleft Lip With or Without Cleft Palate. Genet Test Mol Biomarkers 2016; 20:269-72. [PMID: 26953873 DOI: 10.1089/gtmb.2015.0276] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
OBJECTIVE Nonsyndromic cleft lip with/without cleft palate (nsCL/P, OMIM 119530) is one of the most common birth defects with a prevalence of ∼1/1000 in Caucasians. Studies have demonstrated an association between nsCL/P and the variants of the poliovirus receptor like-1 gene (PVRL1). The aim of this study was to describe novel variants in exon 3 of the PVRL1 gene and to investigate the association between exon 3 of the PVRL1 gene and Turkish patients with nsCL/P. METHODS 205 Turkish subjects were enrolled: 80 nsCL/P patients and 125 unrelated control individuals. Genomic DNA was isolated from peripheral blood leukocytes, and exon 3 of the PVRL1 gene was amplified using polymerase chain reaction (PCR). After PCR, the amplied DNA was sequenced using an automated sequencer. RESULTS We identified two new variants of the PVRL1 gene at codons 174 and 187 in exon 3. These variants had nucleotide substitutions 520T>A and 560C>A, resulting in S174T and T187N amino acid changes, respectively. CONCLUSION Two novel variants of the PVRL 1 gene were identified in nsCL/P patients. These findings suggest that PVRL1 variants make a contribution to nsCL/P in Turkish patients.
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Affiliation(s)
- Deniz Aslar Oner
- Department of Biology, Faculty of Science, Gazi University , Ankara, Turkey
| | - Hakki Tastan
- Department of Biology, Faculty of Science, Gazi University , Ankara, Turkey
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Martinelli M, Girardi A, Cura F, Nouri N, Pinto V, Carinci F, Morselli PG, Salehi M, Scapoli L. Non-syndromic cleft lip with or without cleft palate in Asian populations: Association analysis on three gene polymorphisms of the folate pathway. Arch Oral Biol 2015; 61:79-82. [PMID: 26540672 DOI: 10.1016/j.archoralbio.2015.10.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Revised: 10/13/2015] [Accepted: 10/21/2015] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Orofacial clefts (OFCs) are one of the most common birth defects in humans. They are the subject of a number of investigations aimed at elucidating the bases of their complex mode of inheritance involving both genetic and environmental factors. Genes belonging to the folate pathway have been among the most studied. The aim of the investigation was to replicate previous studies reporting evidence of association between polymorphisms of folate related genes and the occurrence of non-syndromic cleft lip with or without cleft palate (NSCL/P), using three independent samples of different ancestry: from Tibet, Bangladesh and Iran, respectively. DESIGN Specifically, the polymorphisms rs1801133 of MTHFR, rs1801198 of TCN2, and rs4920037 of CBS, were tested. RESULTS A decreased risk of NSCL/P was observed in patients presenting the C677T variant at MTHFR gene (relative risk for heterozygotes=0.53; 95% confidence interval [C.I.]=0.32-0.87). The investigated polymorphisms mapping at TCN2 and CBS genes did not provide any evidence of association. CONCLUSION Overall, these results indicate that NSCL/P risk factors differ among populations and confirm the importance of testing putative susceptibility variants in different genetic backgrounds.
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Affiliation(s)
- Marcella Martinelli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Via Belmeloro, 8, 40126 Bologna, Italy.
| | - Ambra Girardi
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Via Belmeloro, 8, 40126 Bologna, Italy
| | - Francesca Cura
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Via Belmeloro, 8, 40126 Bologna, Italy
| | - Nayereh Nouri
- Medical Genetics Laboratory, Alzahra University Hospital, Isfahan University of Medical Sciences, 81745-319 Isfahan, Iran
| | - Valentina Pinto
- Plastic Surgery Unit, Sant'Orsola Malpighi University Hospital, Via Massarenti, 9, 40138 Bologna, Italy
| | - Francesco Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Luigi Borsari, 46, 44121 Ferrara, Italy
| | - Paolo Giovanni Morselli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Via Belmeloro, 8, 40126 Bologna, Italy
| | - Mansoor Salehi
- Department of Genetics and Molecular Biology, Medical School, Isfahan University of Medical Sciences, 81745-319 Isfahan, Iran
| | - Luca Scapoli
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Via Belmeloro, 8, 40126 Bologna, Italy
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Mitchell LE, Agopian AJ, Bhalla A, Glessner JT, Kim CE, Swartz MD, Hakonarson H, Goldmuntz E. Genome-wide association study of maternal and inherited effects on left-sided cardiac malformations. Hum Mol Genet 2014; 24:265-73. [PMID: 25138779 DOI: 10.1093/hmg/ddu420] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Congenital left-sided lesions (LSLs) are serious, heritable malformations of the heart. However, little is known about the genetic causes of LSLs. This study was undertaken to identify common variants acting through the genotype of the affected individual (i.e. case) or the mother (e.g. via an in utero effect) that influence the risk of LSLs. A genome-wide association study (GWAS) was performed using data from 377 LSL case-parent triads, with follow-up studies in an independent sample of 224 triads and analysis of the combined data. Associations with both the case and maternal genotypes were assessed using log-linear analyses under an additive model. An association between LSLs and the case genotype for one intergenic SNP on chromosome 16 achieved genome-wide significance in the combined data (rs8061121, combined P = 4.0 × 10(-9); relative risk to heterozygote: 2.6, 95% CI: 1.9-3.7). In the combined data, there was also suggestive evidence of association between LSLs and the case genotype for a variant in the synaptoporin gene (rs1975649, combined P = 3.4 × 10(-7); relative risk to heterozygote: 1.6, 95% CI: 1.4-2.0) and between LSLs and the maternal genotype for an intergenic SNP on chromosome 10 (rs11008222, combined P = 6.3 × 10(-7); relative risk to heterozygote: 1.6, 95% CI: 1.4-2.0). This is the first GWAS of LSLs to evaluate associations with both the case and maternal genotypes. The results of this study identify three candidate LSL susceptibility loci, including one that appears to be associated with the risk of LSLs via the maternal genotype.
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Affiliation(s)
- Laura E Mitchell
- Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX 77030, USA
| | - A J Agopian
- Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX 77030, USA
| | - Angela Bhalla
- Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, TX 77030, USA
| | | | | | - Michael D Swartz
- Division of Biostatistics, University of Texas School of Public Health, Houston, TX 77030, USA and
| | - Hakon Hakonarson
- The Center for Applied Genomics and Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Elizabeth Goldmuntz
- Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA Department of Pediatrics, The Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA
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Girardi A, Martinelli M, Cura F, Palmieri A, Carinci F, Sesenna E, Scapoli L. RFC1 and non-syndromic cleft lip with or without cleft palate: an association based study in Italy. J Craniomaxillofac Surg 2014; 42:1503-5. [PMID: 24942095 DOI: 10.1016/j.jcms.2014.04.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 03/07/2014] [Accepted: 04/22/2014] [Indexed: 11/27/2022] Open
Abstract
The molecular basis of orofacial development is largely unknown and needs to be unravelled. Non-syndromic cleft lip with or without cleft palate (NSCL/P) is the most common craniofacial malformation, with an incidence of about 1/700 live births, although variable according to ethnicity. Being a multifactorial disease, it arises as a result of an interplay between genetic and environmental factors. Several approaches have been developed to identify susceptibility genes. Genes belonging to the folate/homocysteine pathway are attracting increasing interest because folate supplementation before and during early pregnancy can reduce the risk of NSCL/P. We performed a family based association study in order to assess if a genetic variant of RFC1 could be involved in NSCL/P onset. We genotyped 404 unrelated probands and their relatives for three biallelic polymorphic variants (rs1051266, rs4818789 and rs3788205), that were selected because they produced conflicting results on previous investigations. Evidence of association was found between the investigated polymorphisms and NSCL/P in our sample of the Italian population, albeit with weak significance levels. Results from this investigation provided a support of previous studies suggesting a role of RFC1 in NSCL/P aetiology, reinforcing the concept that genetic predisposition to NSCL/P varies enormously within different ethnic groups.
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Affiliation(s)
- Ambra Girardi
- Department of Experimental, Diagnostic and Specialty Medicine, University di Bologna, Via Belmeloro 8, 40126 Bologna, Italy
| | - Marcella Martinelli
- Department of Experimental, Diagnostic and Specialty Medicine, University di Bologna, Via Belmeloro 8, 40126 Bologna, Italy.
| | - Francesca Cura
- Department of Experimental, Diagnostic and Specialty Medicine, University di Bologna, Via Belmeloro 8, 40126 Bologna, Italy
| | - Annalisa Palmieri
- Department of Experimental, Diagnostic and Specialty Medicine, University di Bologna, Via Belmeloro 8, 40126 Bologna, Italy
| | - Francesco Carinci
- Department of Morphology, Surgery and Experimental Medicine, University of Ferrara, Via Luigi Borsari 46, 44121 Ferrara, Italy
| | - Enrico Sesenna
- Head and Neck Department, University Hospital of Parma, Via Gramsci 14, 43100 Parma, Italy
| | - Luca Scapoli
- Department of Experimental, Diagnostic and Specialty Medicine, University di Bologna, Via Belmeloro 8, 40126 Bologna, Italy
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Agopian AJ, Mitchell LE, Glessner J, Bhalla AD, Sewda A, Hakonarson H, Goldmuntz E. Genome-wide association study of maternal and inherited loci for conotruncal heart defects. PLoS One 2014; 9:e96057. [PMID: 24800985 PMCID: PMC4011736 DOI: 10.1371/journal.pone.0096057] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2013] [Accepted: 04/02/2014] [Indexed: 12/05/2022] Open
Abstract
Conotruncal and related heart defects (CTDs) are a group of serious and relatively common birth defects. Although both maternal and inherited genotypes are thought to play a role in the etiology of CTDs, few specific genetic risk factors have been identified. To determine whether common variants acting through the genotype of the mother (e.g. via an in utero effect) or the case are associated with CTDs, we conducted a genome-wide association study of 750 CTD case-parent triads, with follow-up analyses in 358 independent triads. Log-linear analyses were used to assess the association of CTDs with the genotypes of both the mother and case. No association achieved genomewide significance in either the discovery or combined (discovery+follow-up) samples. However, three loci with p-values suggestive of association (p<10−5) in the discovery sample had p-values <0.05 in the follow-up sample and p-values in the combined data that were lower than in the discovery sample. These included suggestive association with an inherited intergenic variant at 20p12.3 (rs6140038, combined p = 1.0×10−5) and an inherited intronic variant in KCNJ4 at 22q13.1 (rs2267386, combined p = 9.8×10−6), as well as with a maternal variant in SLC22A24 at 11q12.3 (rs11231379, combined p = 4.2×10−6). These observations suggest novel candidate loci for CTDs, including loci that appear to be associated with the risk of CTDs via the maternal genotype, but further studies are needed to confirm these associations.
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Affiliation(s)
- A. J. Agopian
- Human Genetics Center, Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, Texas, United States of America
| | - Laura E. Mitchell
- Human Genetics Center, Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, Texas, United States of America
- * E-mail:
| | - Joseph Glessner
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Angela D. Bhalla
- Human Genetics Center, Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, Texas, United States of America
| | - Anshuman Sewda
- Human Genetics Center, Division of Epidemiology, Human Genetics and Environmental Sciences, University of Texas School of Public Health, Houston, Texas, United States of America
| | - Hakon Hakonarson
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
- Center for Applied Genomics, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
| | - Elizabeth Goldmuntz
- Department of Pediatrics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania, United States of America
- Division of Cardiology, The Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, United States of America
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Aşlar D, Taştan H. Novel insertion mutation in the PVRL1 gene in Turkish patients with non-syndromic cleft lip with/without cleft palate. Arch Oral Biol 2014; 59:237-40. [PMID: 24581844 DOI: 10.1016/j.archoralbio.2013.11.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2013] [Revised: 11/22/2013] [Accepted: 11/29/2013] [Indexed: 10/25/2022]
Abstract
OBJECTIVES Non-syndromic cleft lip with/without cleft palate (nsCL/P) has a complex aetiology involving both genetic and environmental factors. The aim of this study was to investigate the association between PVRL1 gene mutations and Turkish patients with nsCL/P. DESIGN In this study, 80 Turkish patients with nsCL/P and 125 unrealeted individuals were analyzed. Mutations were detected using polymerase chain reactions and DNA sequencing. RESULTS We found a novel GGA insertion between nucleotide positions c.1311_1313delGGA in exon 6 of the PVRL1 gene. Fifteen of the 80 patients with nsCL/P had the GGA insertion, although no mutation was found in the 125 unrelated individuals. CONCLUSION We identified new supportive evidence that the association between PVRL1 gene and nsCL/P.
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Affiliation(s)
- Deniz Aşlar
- Department of Biology, Faculty of Science, Gazi University, Ankara, Turkey.
| | - Hakkı Taştan
- Department of Biology, Faculty of Science, Gazi University, Ankara, Turkey.
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Murthy J, Lakkakula S, Gurramkonda VB, Pathapati RM, Maram R, Lakkakula BVKS. CBS c.844ins68 Polymorphism Frequencies in Control Populations: Implications on Nonsyndromic Cleft Lip With or Without Cleft Palate. Cleft Palate Craniofac J 2014; 52:49-53. [PMID: 24437588 DOI: 10.1597/13-051] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
INTRODUCTION Nonsyndromic cleft lip with or without cleft palate (NSCLP) is a common birth defect with substantial clinical and social impact. Folate deficiency is one of the factors that have been associated with increased risk for NSCLP. Polymorphisms in folate and homocysteine pathway genes may act as susceptibility factors. OBJECTIVE The objective of this study was to evaluate prevalence estimates of cystathionine beta-synthase (CBS) insertion of 68-bp (c.844ins68) polymorphisms and their correlation with NSCLP. MATERIAL AND METHODS A total of 236 unrelated individuals from seven Indian populations and an additional 355 cases with NSCLP and 357 controls without NSCLP were included in this study. We investigated the CBS c.844ins68 polymorphism in all samples. Genotyping was performed with polymerase chain reaction and electrophoresis. The data were statistically analyzed using the chi-square test. RESULTS The CBS c.844ins68 allele is present in six of the seven populations analyzed, and allele frequencies range from 1.5% in Balija to 9.1% in Sugali populations. The CBS c.844ins68 polymorphism showed a significant protective effect on NSCLP at both genotype (WW versus WI: odds ratio [OR] = 0.54, 95% confidence interval [CI] = 0.31 to 0.95, P = .149) and allele levels (W versus I: OR = 0.56, 95% CI = 0.32 to 0.96, P = .033). CONCLUSIONS The current study observed significant differences in the frequency of the CBS 844ins68 allele across populations. There is a significant association between CBS c.844ins68 polymorphism and cleft lip and palate in the Indian population. Additional studies are warranted to identify the functional variants in the genes controlling homocysteine as etiological contributors to the formation of oral clefts.
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Bartman CM, Egelston J, Kattula S, Zeidner LC, D’Ippolito A, Doble BW, Phiel CJ. Gene Expression Profiling in Mouse Embryonic Stem Cells Reveals Glycogen Synthase Kinase-3-Dependent Targets of Phosphatidylinositol 3-Kinase and Wnt/β-Catenin Signaling Pathways. Front Endocrinol (Lausanne) 2014; 5:133. [PMID: 25165462 PMCID: PMC4131280 DOI: 10.3389/fendo.2014.00133] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2014] [Accepted: 07/28/2014] [Indexed: 11/13/2022] Open
Abstract
Glycogen synthase kinase-3 (Gsk-3) activity is an important regulator of numerous signal transduction pathways. Gsk-3 activity is the sum of two largely redundant proteins, Gsk-3α and Gsk-3β, and in general, Gsk-3 is a negative regulator of cellular signaling. Genetic deletion of both Gsk-3α and Gsk-3β in mouse embryonic stem cells (ESCs) has previously been shown to lead to the constitutive activation of the Wnt/β-catenin signaling pathway. However, in addition to Wnt signaling, all Gsk-3-regulated pathways, such as insulin signaling, are also affected simultaneously in Gsk-3α(-) (/) (-); Gsk-3β(-) (/) (-)ESCs. In an effort to better understand how specific signaling pathways contribute to the global pattern of gene expression in Gsk-3α(-) (/) (-); Gsk-3β(-) (/) (-)ESCs, we compared the gene expression profiles in Gsk-3α(-) (/) (-); Gsk-3β(-) (/) (-) ESCs to mouse ESCs in which either Wnt/β-catenin signaling or phosphatidylinositol 3-kinase (PI3K)-dependent insulin signaling are constitutively active. Our results show that Wnt signaling has a greater effect on up-regulated genes in the Gsk-3α(-) (/) (-); Gsk-3β(-) (/) (-)ESCs, whereas PI3K-dependent insulin signaling is more responsible for the down-regulation of genes in the same cells. These data show the importance of Gsk-3 activity on gene expression in mouse ESCs, and that these effects are due to the combined effects of multiple signaling pathways.
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Affiliation(s)
- Colleen M. Bartman
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, USA
| | - Jennifer Egelston
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, USA
| | - Sravya Kattula
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, USA
| | - Leigh C. Zeidner
- Center for Human and Molecular Genetics, Research Institute at Nationwide Children’s Hospital, Columbus, OH, USA
| | - Anthony D’Ippolito
- Center for Human and Molecular Genetics, Research Institute at Nationwide Children’s Hospital, Columbus, OH, USA
| | - Bradley W. Doble
- Stem Cell and Cancer Research Institute, Department of Biochemistry and Biomedical Sciences, McMaster University, Hamilton, ON, Canada
| | - Christopher J. Phiel
- Department of Integrative Biology, University of Colorado Denver, Denver, CO, USA
- *Correspondence: Christopher J. Phiel, Department of Integrative Biology, University of Colorado Denver, Campus Box 171, P.O. Box 173364, Denver, CO 80217-3364, USA e-mail:
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Determination of Methylenetetrahydrofolate Reductase (MTHFR) gene polymorphism in Turkish patients with nonsyndromic cleft lip and palate. Int J Pediatr Otorhinolaryngol 2013; 77:1143-6. [PMID: 23725631 DOI: 10.1016/j.ijporl.2013.04.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2013] [Revised: 04/09/2013] [Accepted: 04/12/2013] [Indexed: 11/23/2022]
Abstract
OBJECTIVE To investigate the association between MTHFR C677T polymorphism and Turkish patients with nonsyndromic cleft lip and/or palate (nsCL/P) and to determine the prevalence of the Turkish population. PATIENTS AND METHODS Molecular analysis of gene polymorphisms were carried out using polymerase chain reactions and restriction enzyme digestions. In our study, 80 patients with nsCL/P and 125 unrelated individuals from Turkey were studied. RESULTS We found that MTHFR C677T polymorphism is a significant risk factor for nsCL/P in Turkey (p=0.0004). These results support the impact of MTHFR C677T polymorphism and importance of folic acid intake in the etiology of nsCL/P. CONCLUSIONS MTHFR gene which is localized in the relevant region of chromosome 1p36.3 not been studied Turkish patients with nsCL/P and the prevalence of our country not to be determined. We revealed statistically association between the MTHFR C677T gene polymorphism and nonsyndromic cleft lip and/or palate in the Turkish population.
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Association Between Betaine Homocysteine S-Methyl Transferase (BHMT) rs3797546 Gene Polymorphisms and the Risk of Nonsyndromic Cleft Lip and/or Cleft Palate in South-East Population of Iran. HEALTH SCOPE 2012. [DOI: 10.5812/jhs.8381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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