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Zhang Y, Zhang Y, Miao R, Fang X, Yin R, Guan H, Tian J. The MTHFR C677T/A1298C polymorphism is associated with increased risk of microangiopathy in type 2 diabetes mellitus: A systematic review and meta-analysis. Nutr Res 2024; 130:34-47. [PMID: 39340999 DOI: 10.1016/j.nutres.2024.08.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2024] [Revised: 08/30/2024] [Accepted: 08/30/2024] [Indexed: 09/30/2024]
Abstract
Extensive case-control association studies have been conducted over the past few decades to investigate the relationship between MTHFR polymorphism and type 2 diabetes mellitus (T2DM) microangiopathy. However, the strength of the evidence and clinical significance are unclear. Consequently, a meta-analysis was performed to examine the correlations between two prevalent MTHFR single nucleotide polymorphisms, MTHFR C677T and A1298C, and T2DM microangiopathy. Randomized controlled trials were systematically searched in PubMed, Cochrane, Embase, Web of Science, CNKI, VIP database, China Biology Medicine, and Wanfang until August 2023. A total of 42 studies were included. Random-effect models were utilized to estimate odds ratios (ORs) with 95% confidence intervals (CIs) to assess the association between MTHFR polymorphisms and T2DM microangiopathy susceptibility. T2DM microangiopathy was significantly associated with the MTHFR C677T polymorphism in the overall population (T vs C, OR = 1.43, 95% CI = 1.25-1.64; TT + CT vs CC: OR = 1.56, 95% CI = 1.30-1.88; TT vs CT + CC: OR = 1.66, 95% CI = 1.38-1.99; TT vs CC: OR = 2.03, 95% CI = 1.58-2.60). Additionally, the dominant model revealed that the MTHFR A1298C polymorphism was associated with T2DM microangiopathy (OR = 1.27, 95% CI: 1.09-1.47). This meta-analysis revealed that MTHFR may be involved in the pathogenesis of T2DM microangiopathy, providing a reference for early diagnosis and treatment of T2DM.
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Affiliation(s)
- Yuxin Zhang
- Institute of Metabolic Diseases, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
| | - Yanjiao Zhang
- Institute of Metabolic Diseases, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Runyu Miao
- Institute of Metabolic Diseases, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China; Graduate College, Beijing University of Chinese Medicine, Beijing, China
| | - Xinyi Fang
- Institute of Metabolic Diseases, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China; Graduate College, Beijing University of Chinese Medicine, Beijing, China
| | - Ruiyang Yin
- Institute of Metabolic Diseases, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Huifang Guan
- College of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, China
| | - Jiaxing Tian
- Institute of Metabolic Diseases, Guang'anmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China.
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2
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Carrasco-Cabezas M, Assmann TS, Martínez P, Cerpa L, Calfunao S, Echiburú B, Maliqueo M, Crisosto N, Salas-Pérez F. Folate and Vitamin B12 Levels in Chilean Women with PCOS and Their Association with Metabolic Outcomes. Nutrients 2024; 16:1937. [PMID: 38931291 PMCID: PMC11206694 DOI: 10.3390/nu16121937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/12/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
Polycystic ovary syndrome (PCOS) is a common endocrine disorder that affects women of reproductive age. Many women with PCOS have been found to have an unbalanced diet and deficiencies in essential nutrients. This study aimed to assess the levels of folate and vitamin B12 (B12) and their relationship with metabolic factors in women with PCOS. Anthropometric, clinical, and genetic analyses were conducted to evaluate markers related to one-carbon metabolism in women with PCOS and in a control group. The PCOS group had a higher BMI and HOMA-IR (1.7 vs. 3.1; p < 0.0001). HDL cholesterol levels were 23% lower and triglyceride levels were 74% higher in women with PCOS. Although there were no significant differences in folate and B12 levels between the PCOS and control groups, over 60% of women with PCOS had low B12 levels (<300 pg/mL) and high homocysteine levels. In addition, the MTHFR A1298C and C677T polymorphisms were not associated with PCOS. Moreover, erythrocyte folate levels were positively correlated with fasting glucose, triglycerides, and free androgen index, and negatively correlated with SHBG and LH levels. These results suggest that B vitamins may be associated with the metabolic phenotype in PCOS. This study emphasizes the potential link between folate, vitamin B12, and metabolic and hormonal outcomes in women with PCOS.
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Affiliation(s)
- Matías Carrasco-Cabezas
- Laboratory of Chemical Carcinogenesis and Pharmacogenetics, Faculty of Medicine, Universidad de Chile, Santiago 8320000, Chile; (M.C.-C.); (L.C.); (S.C.)
| | - Taís Silveira Assmann
- Graduate Program in Medical Sciences, Endocrinology, Department of Internal Medicine, Faculty of Medicine, Federal University of Rio Grande do Sul, Porto Alegre 90035-003, Brazil;
| | - Paz Martínez
- Laboratory of Endocrinology and Metabolism, Department of Internal Medicine, West Division, Faculty of Medicine, Universidad de Chile, Santiago 8320000, Chile; (P.M.); (B.E.); (M.M.); (N.C.)
- Health Sciences Institute, Universidad de O’Higgins, Rancagua 3070000, Chile
| | - Leslie Cerpa
- Laboratory of Chemical Carcinogenesis and Pharmacogenetics, Faculty of Medicine, Universidad de Chile, Santiago 8320000, Chile; (M.C.-C.); (L.C.); (S.C.)
- Latin American Network for Implementation and Validation of Clinical Pharmacogenomics Guidelines (RELIVAF-CYTED), Santiago 8320000, Chile
| | - Susan Calfunao
- Laboratory of Chemical Carcinogenesis and Pharmacogenetics, Faculty of Medicine, Universidad de Chile, Santiago 8320000, Chile; (M.C.-C.); (L.C.); (S.C.)
| | - Bárbara Echiburú
- Laboratory of Endocrinology and Metabolism, Department of Internal Medicine, West Division, Faculty of Medicine, Universidad de Chile, Santiago 8320000, Chile; (P.M.); (B.E.); (M.M.); (N.C.)
| | - Manuel Maliqueo
- Laboratory of Endocrinology and Metabolism, Department of Internal Medicine, West Division, Faculty of Medicine, Universidad de Chile, Santiago 8320000, Chile; (P.M.); (B.E.); (M.M.); (N.C.)
| | - Nicolás Crisosto
- Laboratory of Endocrinology and Metabolism, Department of Internal Medicine, West Division, Faculty of Medicine, Universidad de Chile, Santiago 8320000, Chile; (P.M.); (B.E.); (M.M.); (N.C.)
- Endocrinology Unit, Department of Medicine, Clínica Alemana de Santiago, Faculty of Medicine, Universidad del Desarrollo, Santiago 7650568, Chile
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3
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Yamada K, Mendoza J, Koutmos M. Structural basis of S-adenosylmethionine-dependent allosteric transition from active to inactive states in methylenetetrahydrofolate reductase. Nat Commun 2024; 15:5167. [PMID: 38886362 PMCID: PMC11183114 DOI: 10.1038/s41467-024-49327-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Accepted: 06/03/2024] [Indexed: 06/20/2024] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is a pivotal flavoprotein connecting the folate and methionine methyl cycles, catalyzing the conversion of methylenetetrahydrofolate to methyltetrahydrofolate. Human MTHFR (hMTHFR) undergoes elaborate allosteric regulation involving protein phosphorylation and S-adenosylmethionine (AdoMet)-dependent inhibition, though other factors such as subunit orientation and FAD status remain understudied due to the lack of a functional structural model. Here, we report crystal structures of Chaetomium thermophilum MTHFR (cMTHFR) in both active (R) and inhibited (T) states. We reveal FAD occlusion by Tyr361 in the T-state, which prevents substrate interaction. Remarkably, the inhibited form of cMTHFR accommodates two AdoMet molecules per subunit. In addition, we conducted a detailed investigation of the phosphorylation sites in hMTHFR, three of which were previously unidentified. Based on the structural framework provided by our cMTHFR model, we propose a possible mechanism to explain the allosteric structural transition of MTHFR, including the impact of phosphorylation on AdoMet-dependent inhibition.
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Affiliation(s)
- Kazuhiro Yamada
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.
- Program in Biophysics, University of Michigan, Ann Arbor, MI, 48109, USA.
- Department of Biological Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.
| | - Johnny Mendoza
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA
| | - Markos Koutmos
- Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.
- Program in Biophysics, University of Michigan, Ann Arbor, MI, 48109, USA.
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4
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Romero-Bolaño YM, Bobadilla-Morales L, Corona-Rivera A, Cuero-Quezada I, Santana-Hernández J, Peña-Padilla C, Brukman-Jiménez A, Orozco-Vela M, Navia-Espinoza N, Corona-Rivera JR. MTHFR 677C>T and 1298A>C Variants in Mothers of Infants with Down Syndrome from Western Mexico. Genet Test Mol Biomarkers 2024; 28:263-266. [PMID: 38717090 DOI: 10.1089/gtmb.2023.0690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024] Open
Abstract
Background: Several studies in mothers of infants with Down syndrome (DS) (MoIDS) have suggested that the 677C>T and 1298A>C variants of the 5,10-methylentetrahydrofolate reductase (MTHFR) gene can increase the risk of having a child with DS. Aim: This study aimed to evaluate the MTHFR 677C>T and 1298A>C variants as potential maternal risk factors for DS. Materials and Methods: Using TaqMan allelic discrimination assay, we genotyped 95 MoIDS and 164 control mothers from western Mexico. Data were analyzed using logistic regression analysis. Results: We found that MoIDS had a significantly higher risk for the MTHFR 677TT genotype (adjusted odds ratio [aOR] = 3.4, 95% confidence interval [95% CI]: 1.1-10.6), and the MTHFR 677T allele (aOR = 1.5, 95% CI: 1.0-2.3), particularly in MoIDS <35 years of age. Conclusions: Our findings indicate that the presence of the 677TT genotype and 677T allele of the MTHFR 677C>T variant are maternal risk factors for DS in Mexican MoIDS.
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Affiliation(s)
- Yaneris Maibeth Romero-Bolaño
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
| | - Lucina Bobadilla-Morales
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
- Dr. Enrique Corona-Rivera' Institute of Human Genetics, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara, Mexico
| | - Alfredo Corona-Rivera
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
- Dr. Enrique Corona-Rivera' Institute of Human Genetics, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara, Mexico
| | - Idalid Cuero-Quezada
- Dr. Enrique Corona-Rivera' Institute of Human Genetics, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara, Mexico
| | - Jennifer Santana-Hernández
- Dr. Enrique Corona-Rivera' Institute of Human Genetics, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara, Mexico
| | - Christian Peña-Padilla
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
| | - Alejandro Brukman-Jiménez
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
| | - Mireya Orozco-Vela
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
| | - Natalia Navia-Espinoza
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
| | - Jorge Román Corona-Rivera
- Center for Registry and Research in Congenital Anomalies (CRIAC), Service of Genetics and Cytogenetics Unit, Pediatrics Division, 'Dr. Juan I. Menchaca' Civil Hospital of Guadalajara, Guadalajara, Mexico
- Dr. Enrique Corona-Rivera' Institute of Human Genetics, Department of Molecular Biology and Genomics, Health Sciences University Center, University of Guadalajara, Guadalajara, Mexico
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5
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Matsuo R, Haught K, Guo W, Na S, Lu K, Kaufmann T, Siamas K. Association between Psoriasis and MTHFR polymorphisms: a systematic review and meta-analysis. Arch Dermatol Res 2024; 316:184. [PMID: 38771513 DOI: 10.1007/s00403-024-02905-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 04/18/2024] [Accepted: 04/25/2024] [Indexed: 05/22/2024]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is key to the metabolism of folic acid, with loss of function mutations resulting in elevated homocysteine levels, a known risk factor for cardiovascular disease. Psoriasis patients may demonstrate hyperhomocysteinemia. To assess for the association between psoriasis and MTHFR C677T and A1298C polymorphisms. A systematic literature search was conducted in MEDLINE, Embase, Cochrane CENTRAL, and Web of Science. Case reports, case-control, cohort, and cross-sectional studies with full-text availability in English were considered. Meta-analysis was conducted with pooled ORs calculated via the random effects model (I2 > 50%). Of 917 records identified, 10 studies were selected for review of 1965 psoriasis patients and 2030 controls. Meta-analysis demonstrated that for MTHFR C677T, there were positive associations between psoriasis and the allele contrast model (C vs T, pooled OR = 1.69, 95% CI = 1.10-2.59), the additive model (CC vs TT, pooled OR = 2.44, 95% CI = 1.06-5.60), the dominant model (CC vs CT + TT, pooled OR = 1.77, 95% CI = 1.06-2.98), and the recessive model (CC + CT vs TT, pooled OR = 2.08, 95% CI = 1.05-4.13). For MTHFR A1298C, there were positive associations between psoriasis and the allele contrast model (A vs C, pooled OR = 3.57, 95% CI = 1.19-10.68), the dominant model (AA vs AC + CC, pooled OR = 4.44, 95% CI = 1.12-17.66), and the overdominant model (AC vs AA + CC, pooled OR = 0.26, 95% CI = 0.07-0.91). There may be a link between the C677T and A1298C polymorphisms with psoriasis diagnosis.
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Affiliation(s)
- Rika Matsuo
- Renaissance School of Medicine at Stony Brook University, Stony Brook, USA.
| | - Katrina Haught
- Renaissance School of Medicine at Stony Brook University, Stony Brook, USA
| | - William Guo
- Department of Dermatology, Renaissance School of Medicine at Stony Brook University, Stony Brook, USA
| | - Sean Na
- Renaissance School of Medicine at Stony Brook University, Stony Brook, USA
| | - Kimberly Lu
- Renaissance School of Medicine at Stony Brook University, Stony Brook, USA
| | - Tara Kaufmann
- Department of Dermatology, Renaissance School of Medicine at Stony Brook University, Stony Brook, USA
| | - Katherine Siamas
- Department of Dermatology, Renaissance School of Medicine at Stony Brook University, Stony Brook, USA
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6
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Caiaffa CD, Tukeman G, Delgado CZ, Ambekar YS, Mekonnen TT, Singh M, Rodriguez V, Ricco E, Kraushaar D, Aglyamov SR, Scarcelli G, Larin KV, Finnell RH, Cabrera RM. Dolutegravir induces FOLR1 expression during brain organoid development. Front Mol Neurosci 2024; 17:1394058. [PMID: 38828282 PMCID: PMC11140035 DOI: 10.3389/fnmol.2024.1394058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Accepted: 04/08/2024] [Indexed: 06/05/2024] Open
Abstract
During the first month of pregnancy, the brain and spinal cord are formed through a process called neurulation. However, this process can be altered by low serum levels of folic acid, environmental factors, or genetic predispositions. In 2018, a surveillance study in Botswana, a country with a high incidence of human immunodeficiency virus (HIV) and lacking mandatory food folate fortification programs, found that newborns whose mothers were taking dolutegravir (DTG) during the first trimester of pregnancy had an increased risk of neural tube defects (NTDs). As a result, the World Health Organization and the U.S. Food and Drug Administration have issued guidelines emphasizing the potential risks associated with the use of DTG-based antiretroviral therapies during pregnancy. To elucidate the potential mechanisms underlying the DTG-induced NTDs, we sought to assess the potential neurotoxicity of DTG in stem cell-derived brain organoids. The gene expression of brain organoids developed in the presence of DTG was analyzed by RNA sequencing, Optical Coherence Tomography (OCT), Optical Coherence Elastography (OCE), and Brillouin microscopy. The sequencing data shows that DTG induces the expression of the folate receptor (FOLR1) and modifies the expression of genes required for neurogenesis. The Brillouin frequency shift observed at the surface of DTG-exposed brain organoids indicates an increase in superficial tissue stiffness. In contrast, reverberant OCE measurements indicate decreased organoid volumes and internal stiffness.
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Affiliation(s)
- Carlo Donato Caiaffa
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- Dell Pediatric Research Institute, University of Texas at Austin, Austin, TX, United States
| | - Gabriel Tukeman
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
| | | | - Yogeshwari S. Ambekar
- Department of Mechanical Engineering, University of Houston, Houston, TX, United States
| | - Taye T. Mekonnen
- Department of Mechanical Engineering, University of Houston, Houston, TX, United States
| | - Manmohan Singh
- Department of Mechanical Engineering, University of Houston, Houston, TX, United States
| | - Victoria Rodriguez
- Genomic and RNA Profiling Core, Baylor College of Medicine, Houston, TX, United States
| | - Emily Ricco
- Genomic and RNA Profiling Core, Baylor College of Medicine, Houston, TX, United States
| | - Daniel Kraushaar
- Genomic and RNA Profiling Core, Baylor College of Medicine, Houston, TX, United States
| | - Salavat R. Aglyamov
- Department of Mechanical Engineering, University of Houston, Houston, TX, United States
| | - Giuliano Scarcelli
- Fischell Department of Bioengineering, University of Maryland, College Park, MD, United States
| | - Kirill V. Larin
- Department of Mechanical Engineering, University of Houston, Houston, TX, United States
| | - Richard H. Finnell
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
- Department of Molecular and Cellular Biology, Molecular and Human Genetics and Medicine, Baylor College of Medicine, Houston, TX, United States
| | - Robert M. Cabrera
- Center for Precision Environmental Health, Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, United States
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7
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Blomgren LKM, Huber M, Mackinnon SR, Bürer C, Baslé A, Yue WW, Froese DS, McCorvie TJ. Dynamic inter-domain transformations mediate the allosteric regulation of human 5, 10-methylenetetrahydrofolate reductase. Nat Commun 2024; 15:3248. [PMID: 38622112 PMCID: PMC11018872 DOI: 10.1038/s41467-024-47174-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 03/22/2024] [Indexed: 04/17/2024] Open
Abstract
5,10-methylenetetrahydrofolate reductase (MTHFR) commits folate-derived one-carbon units to generate the methyl-donor S-adenosyl-L-methionine (SAM). Eukaryotic MTHFR appends to the well-conserved catalytic domain (CD) a unique regulatory domain (RD) that confers feedback inhibition by SAM. Here we determine the cryo-electron microscopy structures of human MTHFR bound to SAM and its demethylated product S-adenosyl-L-homocysteine (SAH). In the active state, with the RD bound to a single SAH, the CD is flexible and exposes its active site for catalysis. However, in the inhibited state the RD pocket is remodelled, exposing a second SAM-binding site that was previously occluded. Dual-SAM bound MTHFR demonstrates a substantially rearranged inter-domain linker that reorients the CD, inserts a loop into the active site, positions Tyr404 to bind the cofactor FAD, and blocks substrate access. Our data therefore explain the long-distance regulatory mechanism of MTHFR inhibition, underpinned by the transition between dual-SAM and single-SAH binding in response to cellular methylation status.
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Affiliation(s)
- Linnea K M Blomgren
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Zürich, CH-8032, Switzerland
| | - Melanie Huber
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Zürich, CH-8032, Switzerland
| | - Sabrina R Mackinnon
- Biosciences Institute, The Medical School, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Céline Bürer
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Zürich, CH-8032, Switzerland
| | - Arnaud Baslé
- Biosciences Institute, The Medical School, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK
| | - Wyatt W Yue
- Biosciences Institute, The Medical School, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
- Centre for Medicines Discovery, Nuffield Department of Clinical Medicine, University of Oxford, Oxford, OX3 7DQ, UK.
| | - D Sean Froese
- Division of Metabolism and Children's Research Center, University Children's Hospital Zürich, University of Zürich, Zürich, CH-8032, Switzerland.
| | - Thomas J McCorvie
- Biosciences Institute, The Medical School, Newcastle University, Newcastle upon Tyne, NE2 4HH, UK.
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8
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Huang Q, Hu Z, Zheng Q, Mao X, Lv W, Wu F, Fu D, Lu C, Zeng C, Wang F, Zeng Q, Fang Q, Hood L. A Proactive Intervention Study in Metabolic Syndrome High-Risk Populations Using Phenome-Based Actionable P4 Medicine Strategy. PHENOMICS (CHAM, SWITZERLAND) 2024; 4:91-108. [PMID: 38884061 PMCID: PMC11169348 DOI: 10.1007/s43657-023-00115-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 06/13/2023] [Accepted: 06/16/2023] [Indexed: 06/18/2024]
Abstract
The integration of predictive, preventive, personalized, and participatory (P4) healthcare advocates proactive intervention, including dietary supplements and lifestyle interventions for chronic disease. Personal profiles include deep phenotypic data and genetic information, which are associated with chronic diseases, can guide proactive intervention. However, little is known about how to design an appropriate intervention mode to precisely intervene with personalized phenome-based data. Here, we report the results of a 3-month study on 350 individuals with metabolic syndrome high-risk that we named the Pioneer 350 Wellness project (P350). We examined: (1) longitudinal (two times) phenotypes covering blood lipids, blood glucose, homocysteine (HCY), and vitamin D3 (VD3), and (2) polymorphism of genes related to folic acid metabolism. Based on personalized data and questionnaires including demographics, diet and exercise habits information, coaches identified 'actionable possibilities', which combined exercise, diet, and dietary supplements. After a 3-month proactive intervention, two-thirds of the phenotypic markers were significantly improved in the P350 cohort. Specifically, we found that dietary supplements and lifestyle interventions have different effects on phenotypic improvement. For example, dietary supplements can result in a rapid recovery of abnormal HCY and VD3 levels, while lifestyle interventions are more suitable for those with high body mass index (BMI), but almost do not help the recovery of HCY. Furthermore, although people who implemented only one of the exercise or diet interventions also benefited, the effect was not as good as the combined exercise and diet interventions. In a subgroup of 226 people, we examined the association between the polymorphism of genes related to folic acid metabolism and the benefits of folate supplementation to restore a normal HCY level. We found people with folic acid metabolism deficiency genes are more likely to benefit from folate supplementation to restore a normal HCY level. Overall, these results suggest: (1) phenome-based data can guide the formulation of more precise and comprehensive interventions, and (2) genetic polymorphism impacts clinical responses to interventions. Notably, we provide a proactive intervention example that is operable in daily life, allowing people with different phenome-based data to design the appropriate intervention protocol including dietary supplements and lifestyle interventions. Supplementary Information The online version contains supplementary material available at 10.1007/s43657-023-00115-z.
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Affiliation(s)
- Qiongrong Huang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, CAS Center for Excellence in Nanoscience, Beijing, 100190 China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049 China
| | - Zhiyuan Hu
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, CAS Center for Excellence in Nanoscience, Beijing, 100190 China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049 China
- Beijing P4 Healthcare Institute, 316 Wanfeng Road, Beijing, 100161 China
- Health Management Institute, The Second Medical Center, National Clinical Research Center for Geriatric Diseases, Chinese People's Liberation Army (PLA) General Hospital, 28 Fuxing Road, Beijing, 100853 China
- School of Nanoscience and Technology, Sino-Danish College, University of Chinese Academy of Sciences, Beijing, 100049 China
- Fujian Provincial Key Laboratory of Brain Aging and Neurodegenerative Diseases, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, 350108 Fujian China
- School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, 430205 Hubei China
| | - Qiwen Zheng
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101 China
| | - Xuemei Mao
- Beijing P4 Healthcare Institute, 316 Wanfeng Road, Beijing, 100161 China
| | - Wenxi Lv
- Beijing P4 Healthcare Institute, 316 Wanfeng Road, Beijing, 100161 China
| | - Fei Wu
- Beijing P4 Healthcare Institute, 316 Wanfeng Road, Beijing, 100161 China
| | - Dapeng Fu
- Beijing Zhongguancun Hospital, No. 12, Zhongguancun South Road, Haidian District, Beijing, 100190 China
| | - Cuihong Lu
- Beijing Zhongguancun Hospital, No. 12, Zhongguancun South Road, Haidian District, Beijing, 100190 China
| | - Changqing Zeng
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences and China National Center for Bioinformation, Beijing, 100101 China
| | - Fei Wang
- Health Management Institute, The Second Medical Center, National Clinical Research Center for Geriatric Diseases, Chinese People's Liberation Army (PLA) General Hospital, 28 Fuxing Road, Beijing, 100853 China
| | - Qiang Zeng
- Health Management Institute, The Second Medical Center, National Clinical Research Center for Geriatric Diseases, Chinese People's Liberation Army (PLA) General Hospital, 28 Fuxing Road, Beijing, 100853 China
| | - Qiaojun Fang
- CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, National Center for Nanoscience and Technology, CAS Center for Excellence in Nanoscience, Beijing, 100190 China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing, 100049 China
- School of Nanoscience and Technology, Sino-Danish College, University of Chinese Academy of Sciences, Beijing, 100049 China
| | - Leroy Hood
- Health Management Institute, The Second Medical Center, National Clinical Research Center for Geriatric Diseases, Chinese People's Liberation Army (PLA) General Hospital, 28 Fuxing Road, Beijing, 100853 China
- Institute for Systems Biology, Seattle, WA 98109 USA
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9
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Xu X, Zhang Z, Lin Y, Xie H. Risk of Excess Maternal Folic Acid Supplementation in Offspring. Nutrients 2024; 16:755. [PMID: 38474883 DOI: 10.3390/nu16050755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/04/2024] [Accepted: 03/06/2024] [Indexed: 03/14/2024] Open
Abstract
Folate, also known as vitamin B9, facilitates the transfer of methyl groups among molecules, which is crucial for amino acid metabolism and nucleotide synthesis. Adequate maternal folate supplementation has been widely acknowledged for its pivotal role in promoting cell proliferation and preventing neural tube defects. However, in the post-fortification era, there has been a rising concern regarding an excess maternal intake of folic acid (FA), the synthetic form of folate. In this review, we focused on recent advancements in understanding the influence of excess maternal FA intake on offspring. For human studies, we summarized findings from clinical trials investigating the effects of periconceptional FA intake on neurodevelopment and molecular-level changes in offspring. For studies using mouse models, we compiled the impact of high maternal FA supplementation on gene expression and behavioral changes in offspring. In summary, excessive maternal folate intake could potentially have adverse effects on offspring. Overall, we highlighted concerns regarding elevated maternal folate status in the population, providing a comprehensive perspective on the potential adverse effects of excessive maternal FA supplementation on offspring.
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Affiliation(s)
- Xiguang Xu
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA
| | - Ziyu Zhang
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Human Development and Family Science, College of Liberal Arts and Human Sciences, Virginia Tech, Blacksburg, VA 24061, USA
| | - Yu Lin
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA
- Genetics, Bioinformatics and Computational Biology Program, Virginia Tech, Blacksburg, VA 24061, USA
| | - Hehuang Xie
- Epigenomics and Computational Biology Lab, Fralin Life Sciences Institute, Virginia Tech, Blacksburg, VA 24061, USA
- Department of Biomedical Sciences and Pathobiology, Virginia-Maryland College of Veterinary Medicine, Virginia Tech, Blacksburg, VA 24061, USA
- Genetics, Bioinformatics and Computational Biology Program, Virginia Tech, Blacksburg, VA 24061, USA
- Translational Biology, Medicine, and Health Program, Virginia Tech, Blacksburg, VA 24061, USA
- School of Neuroscience, Virginia Tech, Blacksburg, VA 24061, USA
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10
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Liu Y, Xu C, Wang Y, Yang C, Pu G, Zhang L, Wang Z, Tao P, Hu S, Lai M. Association analysis of MTHFR (rs1801133 and rs1801131) and MTRR (rs1801394) gene polymorphisms towards the development of hypertension in the Bai population from Yunnan, China. Clin Exp Hypertens 2023; 45:2206066. [PMID: 37154151 DOI: 10.1080/10641963.2023.2206066] [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: 05/10/2023]
Abstract
OBJECTIVE Hypertension is one of the leading causes of human death and disability. MTHFR and MTRR regulate folate metabolism and are closely linked to hypertension, although the relationship is inconsistent among different ethnic groups. The present study aims to investigate the effects of MTHFR C677T (rs1801133), MTHFR A1298C (rs1801131), and MTRR A66G (rs1801394) polymorphisms on hypertension susceptibility in the Bai nationality of the Yunnan Province, China. METHODS This case-control study included 373 hypertensive patients and 240 healthy controls from the Chinese Bai population. The genotyping of MTHFR and MTRR gene polymorphisms was carried out by using the KASP method. The effects of genetic variations of MTHFR and MTRR genes on hypertension risk were evaluated with odds ratios (OR) and 95% confidence intervals (95% CI). RESULTS The present study revealed that the CT and TT genotypes and T allele of MTHFR C677T locus were considerably associated with an increased risk of hypertension. In addition, MTHFR A1298C locus CC genotype could significantly increase the hypertension risk. The T-A and C-C haplotypes of MTHFR C677T and MTHFR A1298C could increase the risk of hypertension. Further stratified analysis by risk rank of folate metabolism indicated that people with poor utilization of folic acid were more prone to develop hypertension. In the hypertension group, the MTHFR C677T polymorphism was significantly associated with fasting blood glucose, fructosamine, apolipoprotein A1, homocysteine, superoxide dismutase, and malondialdehyde levels. CONCLUSION Our study suggested that genetic variations of MTHFR C677T and MTHFR A1298C were significantly associated with susceptibility to hypertension in the Bai population from Yunnan, China.
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Affiliation(s)
- Yongxin Liu
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Chunping Xu
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Yuqing Wang
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Caiting Yang
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Genyuan Pu
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Le Zhang
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Zhuang Wang
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Pengyan Tao
- School of Basic Medicine, Dali University, Dali, Yunnan, China
| | - Shenghe Hu
- Laboratory Department, The First Affiliated Hospital of Dali University, Dali, Yunnan, China
| | - Mingming Lai
- School of Basic Medicine, Dali University, Dali, Yunnan, China
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11
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Sudershan A, Pushap AC, Kumar H, Kumar P. A Comprehensive Investigation into the Association Between Mthfr C677t, A1298c, and Ace I/D Variants and Risk of Migraine: an Updated Meta-Analysis of Genetic Association Studies with Trial Sequential Analysis and Meta-Regression. J Mol Neurosci 2023; 73:884-911. [PMID: 37843720 DOI: 10.1007/s12031-023-02164-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 09/29/2023] [Indexed: 10/17/2023]
Abstract
Many homeostatic genes are thought to play a role in the susceptibility to migraine, making it a highly complex neurovascular disease. In this meta-analysis, our primary objective was to evaluate whether or not MTHFR variants (such as C677T and A1289C) and ACE I/D were associated with an increased risk of migraine. Using a PRISMA-based systematic literature-review guideline, internet sources such as PubMed and Google Scholar were searched to identify the genes of interest and migraine risk. To pool the data, odds ratios with 95% confidence intervals were calculated utilizing different genetic models. Cochran's Q Test and I2 statistics were used to access heterogeneity, while Begg's and Egger's tests were used to identify publication bias. All tests were two-sided, and a p-value of < 0.05 was regarded as statistically significant. The present meta-analysis observed that the C677T variant is significantly associated with the increased risk of migraine (allele model: OR:1.19, CI [1.07-1.33], I2 = 78%) and its clinical subtype i.e., MA (allele model: OR: 1.26, CI [1.09-1.45], I2 = 80%) in the overall population. Concerning the ACE- I/D, it significantly increased the risk of overall migraine and both clinical subtypes after utilizing the dominant genetic models (OR: 1.14, CI [1.01-1.29], I2% = 32). Concerning the MTHFR A1289C, only the codominant model (HR vs HT) and recessive model significantly increased the risk of overall migraine. Therefore, the findings of the present meta-analysis showed that MTHFR-C677T is an important risk factor for migraine and its clinical subtype.
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Affiliation(s)
- Amrit Sudershan
- Institute of Human Genetics, University of Jammu, Jammu and Kashmir 180006, Gujarbasti, Jammu, India
- Department of Human Genetics, Sri Pratap College, Cluster University of Srinagar, Jammu and Kashmir, Kashmir, 190001, India
| | - Agar Chander Pushap
- Department of Education, Dakshina Bharat Hindi Prachar Sabha, Madras, 600017, India
| | - Hardeep Kumar
- Department of Neurology, Super Specialty Hospital, Jammu and Kashmir 180006, Jammu, India
| | - Parvinder Kumar
- Institute of Human Genetics, University of Jammu, Jammu and Kashmir 180006, Gujarbasti, Jammu, India.
- Department of Zoology, University of Jammu, Jammu and Kashmir 180006, Gujarbasti, Jammu, India.
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12
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Moqadami A, Rezaei A, Ahmadi A, Badamchizadeh P, Karimi Z, Molaei F, Khalaj-Kondori M. Investigating the Association of MTHFR C677T Gene Polymorphism with Recurrent Spontaneous Abortion Among Azerbaijani Women from Northwest Iran. Genet Test Mol Biomarkers 2023; 27:339-344. [PMID: 37856088 DOI: 10.1089/gtmb.2023.0330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2023] Open
Abstract
Background: Recurrent spontaneous abortion (RSA), defined as two or more succeeding abortions during 20 weeks of gestation, affects 3-5% of pregnancies. Several studies have found that most women with RSA had at least one (and sometimes two copies) of the methylenetetrahydrofolate reductase (MTHFR) C677T variant. Materials and Methods: The study involved 118 women who had two or more spontaneous abortions (SAs) as the case group and 118 women who had at least one live birth but no SA as the control group. Clinical features such as age, body mass index (BMI), medication received, family history of abortion, and thrombophilia were investigated. Real-time PCR was used for genotyping subjects for MTHFR C677T gene polymorphism. Results: Significant differences in age, BMI, and medication received characters have been shown between those in the patients' group. For the MTHFR C677T gene, the genotypes for the patients' group were 36%, 60%, and 4%, whereas the genotypes for the control group were 30%, 58%, and 12%. In addition, the C and T allelic frequencies were 59% and 41% in the healthy control group and 67% and 33% in the patients' group, respectively. A significant association was found between the TT genotype and RSA. A 3.84-fold increased risk of RSA was associated with the TT genotype (odds ratio = 3.84, confidence interval: 1.28-10.93, p-value = 0.02). Conclusions: In this study, homozygosity for the T allele was significantly lower in the RSA-affected than in healthy women, whereas heterozygosity did not vary substantially between the two groups, which was in line with other studies.
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Affiliation(s)
- Amin Moqadami
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Abedeh Rezaei
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Alireza Ahmadi
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Parastoo Badamchizadeh
- Department of Chemical and Petroleum Engineering, Sharif University of Technology, Tehran, Iran
| | - Zahra Karimi
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Faezeh Molaei
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
| | - Mohammad Khalaj-Kondori
- Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran
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13
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Majumder A. Targeting Homocysteine and Hydrogen Sulfide Balance as Future Therapeutics in Cancer Treatment. Antioxidants (Basel) 2023; 12:1520. [PMID: 37627515 PMCID: PMC10451792 DOI: 10.3390/antiox12081520] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/24/2023] [Accepted: 07/28/2023] [Indexed: 08/27/2023] Open
Abstract
A high level of homocysteine (Hcy) is associated with oxidative/ER stress, apoptosis, and impairment of angiogenesis, whereas hydrogen sulfide (H2S) has been found to reverse this condition. Recent studies have shown that cancer cells need to produce a high level of endogenous H2S to maintain cell proliferation, growth, viability, and migration. However, any novel mechanism that targets this balance of Hcy and H2S production has yet to be discovered or exploited. Cells require homocysteine metabolism via the methionine cycle for nucleotide synthesis, methylation, and reductive metabolism, and this pathway supports the high proliferative rate of cancer cells. Although the methionine cycle favors cancer cells for their survival and growth, this metabolism produces a massive amount of toxic Hcy that somehow cancer cells handle very well. Recently, research showed specific pathways important for balancing the antioxidative defense through H2S production in cancer cells. This review discusses the relationship between Hcy metabolism and the antiapoptotic, antioxidative, anti-inflammatory, and angiogenic effects of H2S in different cancer types. It also summarizes the historical understanding of targeting antioxidative defense systems, angiogenesis, and other protective mechanisms of cancer cells and the role of H2S production in the genesis, progression, and metastasis of cancer. This review defines a nexus of diet and precision medicine in targeting the delicate antioxidative system of cancer and explores possible future therapeutics that could exploit the Hcy and H2S balance.
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Affiliation(s)
- Avisek Majumder
- Department of Medicine, University of California, San Francisco, CA 94143, USA
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14
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Hassan MH, Raslan MA, Tharwat M, Sakhr HM, El-Khateeb EES, Sakr SF, Ameen HH, Hamdan AR. Metabolic Analysis of Methylenetetrahydrofolate Reductase Single Nucleotide Polymorphisms (MTHFR 677C<T and MTHFR 1298A<C), Serum Folate and Vitamin B12 in Neural Tube Defects. Indian J Clin Biochem 2023; 38:305-315. [PMID: 37234187 PMCID: PMC10205924 DOI: 10.1007/s12291-022-01049-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 04/17/2022] [Indexed: 10/18/2022]
Abstract
Neural tube defects (NTDs) are among the most prevalent and debilitating birth defects with their causes are still unknown, despite mounting evidence that genetic and/or environmental factors may play a role. We aimed to analyze two single nucleotide polymorphisms of methylenetetrahydrofolate reductase (MTHFR) gene, serum folate and vitamin B12 status among a cohort of Egyptian children with NTDs and their mothers. A case-control study has been conducted on 50 Egyptian children with various types of NTDs and their mothers. They were comparable with 50 unrelated healthy, age and sex matched children and their mothers (50) selected as controls. Pediatric and neurosurgical assessments were performed to the included cases. Serum folate and vitamin B12 were measured using ELISA kits. MTHFR 677C
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Affiliation(s)
- Mohammed H. Hassan
- Department of Medical Biochemistry, Faculty of Medicine, South Valley University, Qena, 83523 Egypt
| | - Mohamed A. Raslan
- Department of Chemistry, Faculty of Science, Aswan University, Aswan, 81528 Egypt
| | - Mena Tharwat
- Department of Chemistry, Faculty of Science, Aswan University, Aswan, 81528 Egypt
| | - Hala M. Sakhr
- Department of Pediatrics, Faculty of Medicine, South Valley University, Qena, 83523 Egypt
| | | | - Shimaa Fathy Sakr
- Molecular Biology Unit, Medical Technology Center, Medical Research Institute, Alexandria University, Alexandria, Egypt
| | - Hesham H. Ameen
- Department of Clinical Pathology, Faculty of Medicine, Al-Azhar University (Assiut Branch), Assiut, Egypt
| | - Ali R. Hamdan
- Department of Neurosurgery, Faculty of Medicine, South Valley University, Qena, 83523 Egypt
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15
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Wang X, Wang Y, Ma X, Zhou S, Xu J, Guo Y, Liu L, Liu Y, Gao L, Yuan L. Gender-specific association of SLC19A1 and MTHFR genetic polymorphism with oxidative stress biomarkers and plasma folate levels in older adults. Exp Gerontol 2023; 178:112208. [PMID: 37201763 DOI: 10.1016/j.exger.2023.112208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Revised: 05/05/2023] [Accepted: 05/15/2023] [Indexed: 05/20/2023]
Abstract
BACKGROUND Plasma folate levels are closely related to antioxidant capacity and are regulated by folate pathway gene polymorphism. However, few studies have explored the gender-specific association of folate pathway gene polymorphism with oxidative stress biomarkers. The present study was designed to explore the gender-specific independent and combined impacts of solute carrier family 19 member 1 (SLC19A1) and methylenetetrahydrofolate reductase (MTHFR) genetic polymorphisms on oxidative stress biomarkers in older adults. METHODS A total of 401 subjects were recruited, including 145 males and 256 females. Demographic characteristics of the participants were collected by using a self-administered questionnaire. Fasting venous blood samples were taken for folate pathway gene genotyping, circulating lipids parameters and erythrocyte oxidative stress biomarkers measurement. The difference of genotype distribution and the Hardy-Weinberg equilibrium was calculated by the Chi-square test. The general linear model was applied to compare the plasma folate levels and erythrocyte oxidative stress biomarkers. Multiple linear regression was used to explore the correlation between genetic risk scores and oxidative stress biomarkers. Logistic regression was used to explore the association of genetic risk scores of folate pathway gene with folate deficiency. RESULTS The male subjects have lower plasma folate and HDL-C levels than the female ones, and the male carrying MTHFR rs1801133 (CC) or MTHFR rs2274976 (GA) genotypes have higher erythrocyte SOD activity. The plasma folate levels, erythrocyte SOD and GSH-PX activities were negatively correlated with genetic risk scores in the male subjects. A positive correlation between the genetic risk scores and folate deficiency was observed in the male subjects. CONCLUSIONS There was association between folate pathway gene polymorphism of Solute Carrier Family 19 Member 1 (SLC19A1) and Methylenetetrahydrofolate Reductase (MTHFR) with erythrocyte SOD and GSH-PX activities, and folate levels in male but not in female aging subjects. Genetic variant of genes involved in folate metabolism has strong impact on plasma folate levels in the male aging subjects. Our data demonstrated that there was a potential interaction of gender and its genetic background in affecting the body's antioxidant capacity and the risk of folate deficiency in aging subjects.
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Affiliation(s)
- Xixiang Wang
- School of Public Health, Capital Medical University, Beijing, PR China
| | - Ying Wang
- Suzhou Science & Technology Town Hospital, Suzhou, Jiangsu, PR China
| | - Xiaojun Ma
- School of Public Health, Capital Medical University, Beijing, PR China
| | - Shaobo Zhou
- School of Science, Faculty of Engineering and Science, University of Greenwich, Central Avenue, Chatham ME4 4TB, UK
| | - Jingjing Xu
- School of Public Health, Capital Medical University, Beijing, PR China
| | - Yujie Guo
- School of Public Health, Capital Medical University, Beijing, PR China
| | - Lu Liu
- School of Public Health, Capital Medical University, Beijing, PR China
| | - Yu Liu
- School of Public Health, Capital Medical University, Beijing, PR China
| | - Lifang Gao
- School of Public Health, Capital Medical University, Beijing, PR China
| | - Linhong Yuan
- School of Public Health, Capital Medical University, Beijing, PR China.
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16
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Karakus N, Yigit S, Kocak M, Bozkurt N, Duygu F. Impact of methylene-tetrahydrofolate reductase gene C677T and A1298C polymorphisms as a risk factor for hepatitis B virus infection. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2023:1-13. [PMID: 36919686 DOI: 10.1080/15257770.2023.2187061] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/16/2023]
Abstract
Chronic hepatitis B infection caused by Hepatitis B virus (HBV), influences over two billion people worldwide despite having an effective vaccine. With a total prevalence of 4.57%, there are 3.3 million estimated HBV carriers in Türkiye. Methylene-tetrahydrofolate reductase (MTHFR) arrange folate metabolism through nucleic acid synthesis and DNA methylation. C677T (rs1801133, p.Ala222Val) and A1298C (rs1801131, p.Glu429Ala) polymorphisms of MTHFR gene have effect of reducing the activity of enzyme. We purposed to investigate the correlation between C677T and A1298C polymorphisms of MTHFR gene with HBV infection in a Turkish population. One hundred eighteen HBV-infected participants and ninety healthy controls were incorporated in this research. The polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) assay was applied to discover the genotypes of MTHFR polymorphisms. We demonstrated that T allele and CT + TT genotype frequencies of C677T polymorphism were significantly increased in HBV-infected participants than healthy controls [p = 0.015, OR (95% Cl) = 1.7 (1.11-2.79) and p = 0.020, OR (95% Cl) = 1.9 (1.10-3.42), respectively). No significant associations were noted concerning the A1298C polymorphism (p > 0.05). CC-AA composite genotype was observed to be significantly elevated in healthy controls than HBV-infected participants (32.2% vs. 13.6%, p = 0.001). In addition, the frequency of T-C haplotype was found to be considerably higher in the patient group than control group (15.8% vs 11.8%, p = 0.018). In conclusion, we found that T allele of C677T polymorphism poses a risk factor for HBV infection. We also discovered a protective impact of the CC-AA composite genotype against HBV infection and a risk effect of the T-A haplotype for HBV-infection.
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Affiliation(s)
- Nevin Karakus
- Departments of Medical Biology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Türkiye
| | - Serbulent Yigit
- Department of Genetics, Faculty of Veterinary Medicine of Ondokuz Mayis University, Samsun, Türkiye
| | - Mustafa Kocak
- Departments of Medical Biology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Türkiye
| | - Nihan Bozkurt
- Departments of Medical Biology, Faculty of Medicine, Tokat Gaziosmanpasa University, Tokat, Türkiye
| | - Fazilet Duygu
- Department of Internal Medicine, Infectious Diseases, Goethe University, Frankfurt, Germany
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17
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Meena S, Gaikwad HS, Nath B. Plasma Homocysteine, Folic Acid and Vitamin B12 in Abruptio Placentae: A Cross-Sectional Study of Their Role and Feto-Maternal Outcome. Cureus 2023; 15:e35664. [PMID: 37012959 PMCID: PMC10065975 DOI: 10.7759/cureus.35664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/28/2023] [Indexed: 03/06/2023] Open
Abstract
Background Out of the many causes of abruptio placentae, the micronutrient association with its occurrence and severity has not been researched extensively till now. We aim to measure the serum levels of homocysteine, folic acid and vitamin B12 in patients with abruptio placentae in the third trimester of pregnancy and compare the levels with those without the complication. We also propose to compare the feto-maternal outcome between the groups. Methods The cross-sectional study was undertaken in 50 pregnant women with abruption before or during delivery and 50 controls with uncomplicated pregnancy over 28 weeks of gestation. Serum levels of homocysteine, folic acid, and vitamin B12 were determined and feto-maternal outcome was compared between the groups Results Mean age of the cases and controls are 26.82 ± 5.5 and 28.82 ± 4.88 years respectively. Obstetric characteristics have significant difference between the groups in terms of gravidity, mode of delivery, timing of delivery, proportion of stillbirths and blood transfusion. The mean concentration of homocysteine and vitamin B12 between the groups also have a significant difference . The serum level of homocysteine is significantly correlated with serum vitamin B12 level (Pearson correlation= -0.601, P=0.000). However, folic acid concentration between the groups remains comparable. Conclusion Hence we conclude that vitamin B12 and homocysteine are significant determinants of abruptio placentae in pregnant women. Supplementation with the vitamin in the high-risk Indian population can avert a number of obstetric complications occurring due to raised homocysteine.
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18
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Kraveishvili N, Kvaratskhelia E, Surmava S, Kvintradze M, Zarandia M, Gorgiladze T, Abzianidze E. DNA methylation status of interspersed repetitive sequences in patients with migraine. J Int Med Res 2023; 51:3000605231152109. [PMID: 36734246 PMCID: PMC9900668 DOI: 10.1177/03000605231152109] [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: 02/04/2023] Open
Abstract
OBJECTIVE To analyse the methylation status of the Long Interspersed Nuclear Element-1 (LINE-1) and Short Interspersed Nuclear Element Alu (Alu) of peripheral blood mononuclear cells (PBMCs) from patients with migraine compared with healthy control subjects. METHODS This case-control study recruited patients with migraine without aura and age-matched healthy control subjects. PBMCs were purified from peripheral blood samples. Methylation levels and patterns of LINE-1 and Alu sequences were evaluated using combined bisulfite restriction analysis-interspersed repetitive sequences polymerase chain reaction. RESULTS A total of 84 patients with migraine and 82 age-matched healthy controls were enrolled in the study. High levels of unmethylated cytosines in both the LINE-1 and Alu repetitive elements were observed in the migraine group compared with the control subjects. In addition, a significant difference was detected in the methylation level of LINE-1 between TT and CC genotype groups of the methylenetetrahydrofolate reductase gene. CONCLUSIONS These results suggest that analysis of epigenetic biomarkers in PBMCs may help to identify patients at a higher risk of migraine development.
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Affiliation(s)
- Nino Kraveishvili
- Department of Molecular and Medical Genetics, Tbilisi State
Medical University, Tbilisi, Georgia,Department of Neurology, Tbilisi Institute of Medicine, Tbilisi,
Georgia
| | - Eka Kvaratskhelia
- Department of Molecular and Medical Genetics, Tbilisi State
Medical University, Tbilisi, Georgia,Eka Kvaratskhelia, Department of Molecular
and Medical Genetics, Tbilisi State Medical University, 5 Khvichia str., 0160
Tbilisi, Georgia.
| | - Sandro Surmava
- Department of Molecular and Medical Genetics, Tbilisi State
Medical University, Tbilisi, Georgia
| | - Merab Kvintradze
- Department of Molecular and Medical Genetics, Tbilisi State
Medical University, Tbilisi, Georgia
| | - Maia Zarandia
- Department of Molecular and Medical Genetics, Tbilisi State
Medical University, Tbilisi, Georgia
| | - Tinatin Gorgiladze
- Department of Dentistry, Batumi Shota Rustaveli State
University, Batumi, Georgia
| | - Elene Abzianidze
- Department of Molecular and Medical Genetics, Tbilisi State
Medical University, Tbilisi, Georgia
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Kaldygulova L, Ukybassova T, Aimagambetova G, Gaiday A, Tussupkaliyev A. Biological Role of Folic Acid in Pregnancy and Possible Therapeutic Application for the Prevention of Preeclampsia. Biomedicines 2023; 11:272. [PMID: 36830809 PMCID: PMC9953465 DOI: 10.3390/biomedicines11020272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/20/2022] [Accepted: 01/10/2023] [Indexed: 01/20/2023] Open
Abstract
The rationale and importance of folic acid supplementation during pregnancy for fetal congenital defect prevention are accepted worldwide. Moreover, a sufficient plasma concentration of folates can reduce the incidence of spontaneous abortions, and support the normal expansion of placental blood vessels, ensuring physiological placental blood flow, thus promoting appropriate fetal growth and development. Furthermore, there is emerging evidence that long-term supplementation with folic acid can effectively prevent preeclampsia. Preeclampsia is unique to the human species in complications during pregnancy, which contributes to maternal and perinatal mortality worldwide. In the pathogenesis of preeclampsia abnormal placental invasion, the excess of antiangiogenic factors and maternal-placental syndrome play a key role. Increased blood levels of homocysteine during pregnancy are associated with the risk of preeclampsia. Moreover, hyperhomocysteinemia has been proposed to be an independent risk factor for preeclampsia. Folate supplementation helps to decrease elevated levels of homocysteine; thus, the role of folic acid supplementation in pregnancy is even more important. Multiple reports suggest that folate administration decreases the level of serum homocysteine and, therefore, reduce the risk and severity of preeclampsia. However, the association between folic acid supplementation and the decreased risk of preeclampsia has been investigated with controversial conclusions. Currently, the optimal dose of folic acid that is effective for preeclampsia prevention remains uncertain. In this review, we aim to summarize the accumulated knowledge on the role of folic acid in the pathogenesis of preeclampsia, and the possible impact of folate supplementation on the decreased risk of preeclampsia.
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Affiliation(s)
- Lyazzat Kaldygulova
- Department of Obstetrics and Gynecology #2, West-Kazakhstan Marat Ospanov Medical University, Aktobe 030012, Kazakhstan
| | - Talshyn Ukybassova
- Clinical Academic Department of Women’s Health, CF “University Medical Center”, Astana 010000, Kazakhstan
| | - Gulzhanat Aimagambetova
- Department of Biomedical Sciences, School of Medicine, Nazarbayev University, Astana 010000, Kazakhstan
| | - Andrey Gaiday
- Department of Obstetrics and Gynecology #2, West-Kazakhstan Marat Ospanov Medical University, Aktobe 030012, Kazakhstan
| | - Akylbek Tussupkaliyev
- Department of Obstetrics and Gynecology #2, West-Kazakhstan Marat Ospanov Medical University, Aktobe 030012, Kazakhstan
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Zhao L, Li T, Dang M, Li Y, Fan H, Hao Q, Song D, Lu J, Lu Z, Jian Y, Wang H, Wang X, Wu Y, Zhang G. Association of methylenetetrahydrofolate reductase (MTHFR) rs1801133 (677C>T) gene polymorphism with ischemic stroke risk in different populations: An updated meta-analysis. Front Genet 2023; 13:1021423. [PMID: 36685916 PMCID: PMC9845415 DOI: 10.3389/fgene.2022.1021423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Accepted: 11/29/2022] [Indexed: 01/05/2023] Open
Abstract
Background: Recently, increasing evidence has implicated methylenetetrahydrofolate reductase (MTHFR) gene mutation as a risk factor for ischemic stroke (IS) in the general population. However, studies have been inconclusive and lack evidence on specific populations. We aim to determine whether the rs1801133 (NC_000001.11 (MTHFR):g. 677C>T (p.Ala222Val) variant, we termed as MTHFR rs1801133 (677 C>T), is linked to an increased risk of IS in different age groups and ancestry groups. Methods: The literature relevant to our study was found by searching the PubMed, Cochrane Library, Web of Science, EMBASE, and CNKI databases. A random effect model analysis was used to calculate the pooled odds ratio (OR) and 95% confidence interval (CI) to evaluate any possible association. We conducted a subgroup analysis based on the age and ancestry groups of the included populations. Results: As of March 2022, 1,925 citations had been identified in electronic databases, of which 96 studies involving 34,814 subjects met our eligibility criteria. A strong link was found between IS and the MTHFR gene rs1801133 (677C>T) polymorphism in all genetic models [dominant genetic model (OR = 1.47; 95%CI = 1.33-1.61; p < 0.001), recessive genetic model (OR = 1.52; 95%CI = 1.36-1.71; p < 0.001), heterozygous model (OR = 1.36; 95%CI = 1.24-1.48; p < 0.001), homozygous model (OR = 1.82; 95%CI = 1.58-2.11; p < 0.001), and T allelic genetic model (OR = 1.37; 95%CI = 1.27-1.48; p < 0.001)]. Further subgroup analyses indicated that the MTHFR rs1801133 (677C>T) variant may increase the risk of IS in Asian, Hispanic, or Latin population, middle-aged, and elderly populations (p < 0.001). Conclusion: Our results implied that mutation of the T allele of MTHFR rs1801133 (677C>T) could be a risk factor for IS. A significant association was found among Asian, Hispanic, or Latin population, middle-aged, and elderly people.
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Affiliation(s)
- Lili Zhao
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Tao Li
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Meijuan Dang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Ye Li
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Hong Fan
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Qian Hao
- Department of Oncology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Dingli Song
- Department of Thoracic Surgery, The First Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Jialiang Lu
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Ziwei Lu
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yating Jian
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Heying Wang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Xiaoya Wang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Yulun Wu
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China
| | - Guilian Zhang
- Department of Neurology, The Second Affiliated Hospital of Xi’an Jiaotong University, Xi’an, China,*Correspondence: Guilian Zhang,
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Capatina N, Burton GJ, Yung HW. Elevated homocysteine activates unfolded protein responses and causes aberrant trophoblast differentiation and mouse blastocyst development. Physiol Rep 2022; 10:e15467. [PMID: 36117391 PMCID: PMC9483615 DOI: 10.14814/phy2.15467] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 08/28/2022] [Accepted: 08/30/2022] [Indexed: 06/15/2023] Open
Abstract
Hyperhomocysteinemia may arise from folate/vitamin B12 deficiency, genetic polymorphisms, kidney disease, or hypothyroidism. It is associated with an increased risk of early pregnancy loss and placenta-related complications of pregnancy, including pre-eclampsia and fetal growth restriction. While the majority of studies of hyperhomocysteinemia focus on epigenetic changes secondary to metabolic disruption, the effects of homocysteine toxicity on placental development remain unexplored. Here, we investigated the influence of hyperhomocysteinemia on early blastocyst development and trophoblast differentiation. Exposure of cultured blastocysts to high homocysteine levels reduces cell number in the trophectoderm layer, most likely through increased apoptosis. Homocysteine also promotes differentiation of a trophoblast stem cell line. Both effects diminish the stem cell pool, and are mediated in an endoplasmic reticulum (ER) unfolded protein response (UPRER )-dependent manner. Targeted alleviation of UPRER may therefore provide a new therapeutic intervention to improve pregnancy outcome in women with hyperhomocysteinemia.
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Affiliation(s)
- Nadejda Capatina
- Department of Physiology, Development and Neuroscience, Centre for Trophoblast ResearchUniversity of CambridgeCambridgeUK
| | - Graham J. Burton
- Department of Physiology, Development and Neuroscience, Centre for Trophoblast ResearchUniversity of CambridgeCambridgeUK
| | - Hong Wa Yung
- Department of Physiology, Development and Neuroscience, Centre for Trophoblast ResearchUniversity of CambridgeCambridgeUK
- Department of Clinical NeuroscienceUniversity of CambridgeCambridgeUK
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Zou XL, Yao TX, Deng L, Chen L, Li Y, Zhang L. A systematic review and meta-analysis expounding the relationship between methylene tetrahydrofolate reductase gene polymorphism and the risk of intracerebral hemorrhage among populations. Front Genet 2022; 13:829672. [PMID: 35991566 PMCID: PMC9382188 DOI: 10.3389/fgene.2022.829672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 07/04/2022] [Indexed: 12/03/2022] Open
Abstract
Background: The relationship between methylenetetrahydrofolate reductase (MTHFR) gene C677T and A1298C polymorphism with the risk of intracerebral hemorrhage (ICH) has remained to be controversial in recent years. This meta-analysis is aimed to confirm the association of these. Methods: Systematically searching the related studies from the PubMed, Embase, Cochrane Library, China national knowledge internet database from 1 January 1990 to 1 June 2022. The odd ratio (ORs) and 95% confidence interval (CIs) of gene-disease correlation in various gene models were calculated by fixed or random effect model of meta-analysis. We included 20 case-control studies in this meta-analysis with a total of 1,989 ICH patients and 4,032 health controls originated from Asian, Caucasian, and African populations. Results: The statistical analysis demonstrated the association of MTHFR C677T gene polymorphism with ICH in allele model [ORT VS. C = 1.20 (95%CI: 1.06–1.36)]; homozygote model [OR TT VS. CC = 1.50 (95%CI: 1.20–1.88)]; dominant model [OR CT+ TT VS. CC = 1.23 (95%CI: 1.03–1.48)] and recessive model [ORTT VS. CT+CC = 1.37 (95%CI: 1.17–1.60)]. Besides, we also found the relationship of MTHFR C677T gene polymorphism with Asian in four comparison model (ORT VS. C = 1.19.95%CI:1.09–1.37, ORTT VS. CC = 1.46.95%CI: 1.15–1.85, OR CT+ TT VS. CC = 1.25.95%CI: 1.01–1.54, ORTT VS. CT+CC = 1.34.95%CI: 1.54–1.17) and Caucasian in four comparison model (ORT VS. C = 1.90.95%CI: 1.22–2.97, ORTT VS. CC = 2.67.95%CI: 1.42–5.00, OR CT+ TT VS. CC = 1.56.95%CI: 1.05–2.32, ORTT VS. CT+CC = 2.25.95%CI: 1.46–4.00). But no statistically significant correlation between A1298C polymorphism and the occurrence of ICH was detected in four studies. Conclusion: MTHFR C677T gene polymorphism increases the risk of ICH in Asian and Caucasian populations but has no impact on the incidence in African communities. More importantly, the risk of ICH increases in TT genotype individuals in comparison to CT and CC genotype individuals in Asian and Caucasian populations.
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Affiliation(s)
- Xue-Lun Zou
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Multi-Modal Monitoring Technology for Severe Cerebrovascular Disease of Human Engineering Research Center, Xiangya Hospital, Central South University, Changsha, China
| | - Tian-Xing Yao
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Lu Deng
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Lei Chen
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Ye Li
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
| | - Le Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, China
- National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
- Multi-Modal Monitoring Technology for Severe Cerebrovascular Disease of Human Engineering Research Center, Xiangya Hospital, Central South University, Changsha, China
- *Correspondence: Le Zhang,
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Mabhida SE, Sharma JR, Apalata T, Masilela C, Nomatshila S, Mabasa L, Fokkens H, Benjeddou M, Muhamed B, Shabalala S, Johnson R. The association of MTHFR (rs1801133) with hypertension in an indigenous south African population. Front Genet 2022; 13:937639. [PMID: 35938016 PMCID: PMC9353403 DOI: 10.3389/fgene.2022.937639] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 06/30/2022] [Indexed: 11/23/2022] Open
Abstract
Aims: The current study sought to investigate the association between the methylenetetrahydrofolate reductase (MTHFR) variant (rs1801133) and the risk of developing hypertension (HTN) in an indigenous South African population. Methods: A total of 442 participants (hypertensive, n = 279 and non-hypertensive, n = 163) from the indigenous tribe residing in Mthatha, Eastern Cape (South Africa) were recruited. HTN was defined as a systolic (SBP) and diastolic blood pressure (DBP) of ≥130/80 mmHg following American Heart Association guidelines. The genotyping of MTHFR (rs1801133) was assessed using MassARRAY® System. Thereafter, the association between rs1801133 in various genetic models and HTN was determined by logistic regression model analysis. Furthermore, the interaction between rs1801133 and selected risk factors on HTN was performed using the open-source multifactor dimensionality reduction (MDR). Results: The low frequency of the T allele (5%) was also observed when compared with the C allele (95%) in both cases and controls. After adjusting for confounding factors (gender, smoking status, BMI, and blood glucose levels), there were no significant associations were observed between rs1801133 and the risk of HTN in all genetic models: genotypic (OR 0.75, 95% CI 0.29–1.95, p = 0.56), dominant (OR 0.86, 95% CI 0.35–2.16, p = 0.75), co-dominant (OR 1.33, 95% CI 0.51–3.48, p = 0.55) and allelic (OR 0.80, 95% CI 0.49–1.62, p = 0.70) in logistic regression analysis. However, a significant interaction was reported among rs1801133, age, and gender (p < 0.0001) with the risk of HTN. Conclusion: The present study reports on the lack of association between MTHFR (rs1801133) and the risk of HTN in an indigenous South African tribe. However, an interaction between gender, age, and rs1801133 was observed. Thus, future studies with a large sample size are required to further validate these findings.
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Affiliation(s)
- Sihle E. Mabhida
- Biomedical Research and Innovation Platform, SAMRC, Tygerberg, South Africa
- Department of Biotechnology, Faculty of Natural Science, University of the Western Cape, Cape Town, South Africa
| | - Jyoti R. Sharma
- Biomedical Research and Innovation Platform, SAMRC, Tygerberg, South Africa
| | - Teke Apalata
- Division of Medical Microbiology, Department of Laboratory-Medicine and Pathology, Faculty of Health Sciences, Walter Sisulu University and National Health Laboratory Services, Mthatha, South Africa
| | - Charity Masilela
- Department of Biochemistry, North-West University, Mmabatho, South Africa
| | - Sibusiso Nomatshila
- Division of Preventive Medicine and Health Behavior, Department of Public Health, Faculty of Health Sciences, Walter Sisulu University, Mthatha, South Africa
| | - Lawrence Mabasa
- Biomedical Research and Innovation Platform, SAMRC, Tygerberg, South Africa
| | - Hannah Fokkens
- Biomedical Research and Innovation Platform, SAMRC, Tygerberg, South Africa
- Centre for Cardio-Metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
| | - Mongi Benjeddou
- Department of Biotechnology, Faculty of Natural Science, University of the Western Cape, Cape Town, South Africa
| | - Babu Muhamed
- Division of Infections Disease - University of Tennessee Health Sciences Center (UTHSC), Memphis, TN, United States
| | | | - Rabia Johnson
- Biomedical Research and Innovation Platform, SAMRC, Tygerberg, South Africa
- Centre for Cardio-Metabolic Research in Africa, Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg, South Africa
- *Correspondence: Rabia Johnson,
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Hu T, Zhou G, Li W. Association Between the Individual and Combined Effects of the GSTM1 and GSTT1 Polymorphisms and Risk of Leukemia: A Meta-Analysis. Front Genet 2022; 13:898937. [PMID: 35938012 PMCID: PMC9355274 DOI: 10.3389/fgene.2022.898937] [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: 03/18/2022] [Accepted: 06/06/2022] [Indexed: 11/24/2022] Open
Abstract
Background: Fourteen meta-analyses reported the individual effects of the GSTM1 and GSTT1 polymorphisms on leukemia risk. However, over 40 studies were not included in previously published meta-analyses. Moreover, one key aspect was that previous meta-analyses did not conduct the false-positive test on the aforementioned issues. Furthermore, previous meta-analyses did not observe the combined effects of GSTM1 present/null and GSTT1 present/null polymorphism with leukemia risk. Therefore, we conducted the current study to further analyze these associations. Objectives: This study aimed to investigate the association between the individual and combined effects of the GSTM1 present/null and GSTT1 present/null polymorphisms and the risk of leukemia. Methods: A meta-analysis was performed applying Meta-analyses of Observational Studies in Epidemiology (MOOSE) guidelines. Moreover, false-positive report probability (FPRP) and Bayesian false discovery probability (BFDP) were applied to investigate the false-positive results. Results: The individual GSTM1 and GSTT1 null genotypes and combined effects of the two genes were associated with a significantly increased leukemia risk in overall and several subgroup analyses, such as Asians, Caucasians, and so on. Then, further analysis was conducted using FPRP and BFDP. Significant associations were considered as "positive" results on the GSTM1 null genotype with leukemia risk in overall populations (FPRP < 0.001 and BFDP = 0.006), Asians (FPRP < 0.001 and BFDP < 0.001), and East Asian population (FPRP < 0.001 and BFDP = 0.002). For the GSTT1 null genotype, significant associations were regarded "positive" results in overall populations, acute myeloid leukemia (AML), Asians, and East Asian population. For the combined effects of the GSTM1 and GSTT1 polymorphisms, significant associations were also considered "positive" results in the overall analysis of Asians, Indians, and East Asian population. Conclusion: This study strongly indicates that the individual GSTM1 and GSTT1 null genotypes and combined effects of the two genes are associated with increased leukemia risk in Asians, especially in the East Asian population; the GSTT1 null genotype is associated with increased AML risk; the combined effects of the two genes are associated with increased leukemia risk in Indians.
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Affiliation(s)
- Ting Hu
- Department of Hematology, Pingxiang People’s Hospital, Pingxiang, China
| | - Guozhong Zhou
- Department of Cardiology, Pingxiang People’s Hospital, Pingxiang, China
| | - Wenjin Li
- Department of Hematology, Pingxiang People’s Hospital, Pingxiang, China
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Meng X, Zheng JL, Sun ML, Lai HY, Wang BJ, Yao J, Wang H. Association between MTHFR (677C>T and 1298A>C) polymorphisms and psychiatric disorder: A meta-analysis. PLoS One 2022; 17:e0271170. [PMID: 35834596 PMCID: PMC9282595 DOI: 10.1371/journal.pone.0271170] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 06/25/2022] [Indexed: 11/30/2022] Open
Abstract
Recent studies showed that genetic polymorphism of 5,10-methylenetetrahydrofolate reductase (MTHFR) is related to attention-deficit hyperactivity disorder (ADHD), bipolar disorder (BD) and schizophrenia (SCZ). However, no consistent conclusion has been determined. This meta-analysis aims to interrogate the relationship between MTHFR gene polymorphisms (677C>T and 1298A>C) and the occurrence of ADHD, BD and SCZ. We retrieved case-control studies that met the inclusion criteria from the PubMed database. Associations between MTHFR polymorphisms (677C>T and 1298A>C) and ADHD, BD and SCZ were measured by means of odds ratios (ORs) using a random effects model and 95% confidence intervals (CIs). Additionally, sensitivity analysis and publication bias were performed. After inclusion criteria were met, a total of five studies with ADHD including 434 cases and 670 controls, 18 studies with BD including 4167 cases and 5901 controls and 44 studies with SCZ including 16,098 cases and 19913 controls were finally included in our meta-analysis. Overall, our meta-analytical results provided evidence that the MTHFR 677C>T was associated with occurrence of BD and SCZ, while the 1298A>C polymorphism was related to ADHD and BD, and additionally the sensitivity analysis indicated these results were stable and reliable. This may provide useful information for relevant studies on the etiology of psychiatric disorders.
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Affiliation(s)
- Xinyao Meng
- School of Basic Medicine, Shenyang Medical College, Shenyang, P.R. China
| | - Ji-long Zheng
- Department of Forensic Medicine, China Criminal Police College, Shenyang, P.R. China
| | - Mao-ling Sun
- School of Forensic Medicine, China Medical University, Shenyang, P.R. China
| | - Hai-yun Lai
- School of Forensic Medicine, China Medical University, Shenyang, P.R. China
| | - Bao-jie Wang
- School of Forensic Medicine, China Medical University, Shenyang, P.R. China
| | - Jun Yao
- School of Forensic Medicine, China Medical University, Shenyang, P.R. China
| | - Hongbo Wang
- School of Basic Medicine, Shenyang Medical College, Shenyang, P.R. China
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Karakus N, Duygu F, Rustemoglu A, Yigit S. Methylene-tetrahydrofolate reductase gene C677T and A1298C polymorphisms as a risk factor for Crimean-Congo hemorrhagic fever. NUCLEOSIDES, NUCLEOTIDES & NUCLEIC ACIDS 2022; 41:878-890. [PMID: 35666819 DOI: 10.1080/15257770.2022.2085296] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 05/24/2022] [Accepted: 05/29/2022] [Indexed: 06/15/2023]
Abstract
Crimean-Congo hemorrhagic fever (CCHF) is a deadly viral disease. Methylene-tetrahydrofolate reductase (MTHFR) has an important role in folate metabolism, and also in the formation of new cells, DNA synthesis, repair and methylation. We aimed to examine the relationship between MTHFR gene C677T (Ala222Val, rs1801133) and A1298C (Glu429Ala, rs1801131) polymorphisms with CCHF in a Turkish population. Totally 273 participants were included in the current study. One hundred forty-one participants were CCHF patients and one hundred thirty-two participants were healthy controls. The polymerase chain reaction (PCR) and further restriction fragment length polymorphism (RFLP) assays were applied to determine the genotypes of MTHFR polymorphisms. We did not find any differences between the CCHF patients and healthy controls in terms of allele and genotype distributions of both the C677T and A1298C polymorphisms. In composite genotype analysis between different groups, the frequency of CT-AA composite genotype, which is formed by C677T-A1298C polymorphisms, was found to be significantly higher in Mild CCHF patients compared to both Severe CCHF patients and controls (p = 0.036 and p = 0.008, respectively). In conclusion, in this study, we found a relationship between CCHF and MTHFR gene polymorphisms. CT-AA composite genotype of MTHFR gene C677T and A1298C polymorphisms showed a predisposition to Mild CCHF.
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Affiliation(s)
- Nevin Karakus
- Department of Medical Biology, Tokat Gaziosmanpasa University, Tokat, Turkey
| | - Fazilet Duygu
- Department of Internal Medicine, Infectious Diseases, Goethe University, Frankfurt, Germany
| | - Aydin Rustemoglu
- Department of Medical Biology, Aksaray University, Aksaray, Turkey
| | - Serbulent Yigit
- Faculty of Veterinary Medicine, Department of Genetics, Ondokuz Mayis University, Samsun, Turkey
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Association between Genetic Polymorphisms in Methylenetetrahydrofolate Reductase and Risk of Autoimmune Diseases: A Systematic Review and Meta-Analysis. DISEASE MARKERS 2022; 2022:4568145. [PMID: 35686035 PMCID: PMC9173919 DOI: 10.1155/2022/4568145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 04/30/2022] [Accepted: 05/13/2022] [Indexed: 11/17/2022]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is a critical rate-limiting enzyme in the homocysteine/methionine metabolism pathway that is implicated in the pathogenesis and progression of autoimmune diseases. Previous association studies have been performed to investigate the effect of polymorphisms in MTHFR on the risk of autoimmune diseases with inconsistent results. Therefore, this meta-analysis was designed to assess the association between the MTHFR 677 C/T and 1298 A/C polymorphisms and the susceptibility to autoimmune diseases. We identified reports by a literature search in the following electronic databases: PubMed, Ovid, Web of science, and China National Knowledge Infrastructure. Statistical analyses of the summary odds ratios (ORs) and 95% confidence intervals (CIs) were done using STATA software. In a recessive genetic model, the MTHFR 677 C/T polymorphism was associated with an increased risk of Behcet's disease (OR = 1.97, 95% CI, 1.31-2.97), multiple sclerosis (OR = 1.57, 95% CI, 1.03-2.38), and ankylosing spondylitis (OR = 2.90, 95% CI, 1.92-4.38). The MTHFR 1298 A/C polymorphism was associated an increased risk of multiple sclerosis in a heterozygote comparison (OR = 2.36, 95% CI, 1.29-4.30) and in a dominant model (OR = 2.31, 95% CI, 1.24-4.29). This meta-analysis demonstrated that the MTHFR 677 C/T was a risk factor for Behcet's disease, multiple sclerosis, and ankylosing spondylitis, and the 1298 A/C was a risk factor for multiple sclerosis.
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Raghubeer S, Matsha TE. Methylenetetrahydrofolate (MTHFR), the One-Carbon Cycle, and Cardiovascular Risks. Nutrients 2021; 13:nu13124562. [PMID: 34960114 PMCID: PMC8703276 DOI: 10.3390/nu13124562] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2021] [Revised: 12/07/2021] [Accepted: 12/15/2021] [Indexed: 02/06/2023] Open
Abstract
The 5-10-methylenetetrahydrofolate reductase (MTHFR) enzyme is vital for cellular homeostasis due to its key functions in the one-carbon cycle, which include methionine and folate metabolism and protein, DNA, and RNA synthesis. The enzyme is responsible for maintaining methionine and homocysteine (Hcy) balance to prevent cellular dysfunction. Polymorphisms in the MTHFR gene, especially C677T, have been associated with various diseases, including cardiovascular diseases (CVDs), cancer, inflammatory conditions, diabetes, and vascular disorders. The C677T MTHFR polymorphism is thought to be the most common cause of elevated Hcy levels, which is considered an independent risk factor for CVD. This polymorphism results in an amino acid change from alanine to valine, which prevents optimal functioning of the enzyme at temperatures above 37 °C. Many studies have been conducted to determine whether there is an association between the C677T polymorphism and increased risk for CVD. There is much evidence in favour of this association, while several studies have concluded that the polymorphism cannot be used to predict CVD development or progression. This review discusses current research regarding the C677T polymorphism and its relationship with CVD, inflammation, diabetes, and epigenetic regulation and compares the evidence provided for and against the association with CVD.
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Li Y, Dong J, Xu R, Feng F, Kan W, Ding H, Wang X, Chen Y, Wang X, Zhu S, Dong R. Clinical epidemiological characteristics of nitrous oxide abusers: A single-center experience in a hospital in China. Brain Behav 2021; 11:e2416. [PMID: 34775689 PMCID: PMC8671768 DOI: 10.1002/brb3.2416] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Revised: 10/07/2021] [Accepted: 10/21/2021] [Indexed: 11/06/2022] Open
Abstract
PURPOSE This study investigated the clinical epidemiological characteristics of nitrous oxide (N2 O) abusers in a hospital in China, which have not been systematically reported. METHODS The characteristics of patients abusing N2 O who were examined and treated at the Affiliated Hospital of Xuzhou Medical University from January 2017 to December 2020 were analyzed. RESULTS A total of 61 patients (average age: 21.7 ± 3.2 years; 42 male and 19 female) were enrolled; 60.7% of the patients had an education level of high school or lower, and most (59.0%) had no stable occupation. The mean exposure time was 8.5 ± 7.7 months (range: 1-36 months). Only 52.5% of the abusers reported the physician of the relevant exposure history at the first time of visiting the doctor. The main clinical type was mixed (49.2%). The most common clinical manifestation was distal limb numbness (80.3%). The most frequent outcome was peripheral neuropathy (59%) and subacute combined degeneration (36%). Serum homocysteine level was elevated in 67.5% (27/40) of the patients, while 44.4% (20/45) showed reduced vitamin B12. Note that 61% (22/36) showed abnormal signals in the posterior or lateral funiculus of the spinal cord, and 97% (31/32) of the patients showed peripheral nerve damage by electromyography. In all cases, symptoms were alleviated after halting N2 O intake and receiving nutritional neurotherapy. CONCLUSIONS N2 O abuse can lead to nervous system damage, especially peripheral nerve and spinal cord damage. A full understanding of its clinical epidemiological characteristics is helpful for clinicians to make a timely and clear diagnosis.
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Affiliation(s)
- Yueyue Li
- Clinical College, Xuzhou Medical University, Xuzhou, China
| | - Jing Dong
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Ran Xu
- Clinical College, Xuzhou Medical University, Xuzhou, China
| | - Fanfan Feng
- Clinical College, Xuzhou Medical University, Xuzhou, China
| | - Weihao Kan
- Clinical College, Xuzhou Medical University, Xuzhou, China
| | - Hongmei Ding
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Xiaolong Wang
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Yujie Chen
- Clinical College, Xuzhou Medical University, Xuzhou, China
| | - Xin Wang
- Clinical College, Xuzhou Medical University, Xuzhou, China
| | - Shiguang Zhu
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - Ruiguo Dong
- Department of Neurology, The Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
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Ghumman GM, Ishtiaq R, Avasthi D. Portal Vein Thrombosis in a Patient With Methylenetetrahydrofolate Reductase Gene Mutation and Normal Homocysteine Levels. Cureus 2021; 13:e18225. [PMID: 34722031 PMCID: PMC8544635 DOI: 10.7759/cureus.18225] [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] [Accepted: 09/23/2021] [Indexed: 01/21/2023] Open
Abstract
A 21-year-old male presented with chief complaints of abdominal pain, nausea, and vomiting and was found to have portal vein thrombosis (PVT) on computed tomography (CT) scan of the abdomen, which was redemonstrated on ultrasound. Thrombophilia workup was negative except that patient was heterozygous for methylenetetrahydrofolate reductase (MTHFR) gene mutation. Homocysteine levels were normal. The patient was started on enoxaparin and discharged on apixaban with the plan to continue anticoagulation for at least six months. Follow-up MRI after four months showed interval improvement of the main portal vein thrombus with the use of Eliquis.
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Affiliation(s)
| | - Rizwan Ishtiaq
- Internal Medicine, St. Vincent Mercy Medical Center, Toledo, USA
| | - Deepti Avasthi
- Internal Medicine, St. Vincent Mercy Medical Center, Toledo, USA
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Liu T, Momin M, Zhou H, Zheng Q, Fan F, Jia J, Liu M, Bao M, Li J, Huo Y, Liu J, Zhang Y, Mao X, Han X, Hu Z, Zeng C, Liu F, Zhang Y. Exome-Wide Association Study Identifies East Asian-Specific Missense Variant MTHFR C136T Influencing Homocysteine Levels in Chinese Populations RH: ExWAS of tHCY in a Chinese Population. Front Genet 2021; 12:717621. [PMID: 34707639 PMCID: PMC8542906 DOI: 10.3389/fgene.2021.717621] [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] [Received: 06/02/2021] [Accepted: 09/02/2021] [Indexed: 02/01/2023] Open
Abstract
Plasma total homocysteine (tHCY) is a known risk factor of a wide range of complex diseases. No genome scans for tHCY have been conducted in East Asian populations. Here, we conducted an exome-wide association study (ExWAS) for tHCY in 5,175 individuals of Chinese Han origin, followed by a replication study in 668 Chinese individuals. The ExWAS identified two loci, 1p36.22 (lead single-nucleotide polymorphism (SNP) rs1801133, MTHFR C677T) and 16q24.3 (rs1126464, DPEP1), showing exome-wide significant association with tHCY (p < 5E-7); and both loci have been previously associated with tHCY in non-East Asian populations. Both SNPs were replicated in the replication study (p < 0.05). Conditioning on the genotype of C677T and rs1126464, we identified a novel East Asian-specific missense variant rs138189536 (C136T) of MTHFR (p = 6.53E-10), which was also significant in the replication study (p = 9.8E-3). The C136T and C677T variants affect tHCY in a compound heterozygote manner, where compound heterozygote and homozygote genotype carriers had on average 43.4% increased tHCY than had other genotypes. The frequency of the homozygote C677T genotype showed an inverse-U-shaped geospatial pattern globally with a pronounced frequency in northern China, which coincided with the high prevalence of hyperhomocysteinemia (HHCY) in northern China. A logistic regression model of HHCY status considering sex, age, and the genotypes of the three identified variants reached an area under the receiver operating characteristic curve (AUC) value of 0.74 in an independent validation cohort. These genetic observations provide new insights into the presence of multiple causal mutations at the MTHFR locus, highlight the role of genetics in HHCY epidemiology among different populations, and provide candidate loci for future functional studies.
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Affiliation(s)
- Tianzi Liu
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,China National Center for Bioinformation, Beijing, China
| | - Mohetaboer Momin
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
| | - Huiyue Zhou
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,China National Center for Bioinformation, Beijing, China
| | - Qiwen Zheng
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,China National Center for Bioinformation, Beijing, China
| | - Fangfang Fan
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
| | - Jia Jia
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
| | - Mengyuan Liu
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
| | - Minghui Bao
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
| | - Jianping Li
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
| | - Yong Huo
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
| | - Jialin Liu
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,China National Center for Bioinformation, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yaning Zhang
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,China National Center for Bioinformation, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Xuemei Mao
- Beijing P4 Healthcare Institute, Beijing, China
| | - Xiao Han
- Beijing P4 Healthcare Institute, Beijing, China
| | - Zhiyuan Hu
- Beijing P4 Healthcare Institute, Beijing, China.,CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology of China, Beijing, China.,School of Nanoscience and Technology, Sino-Danish College, University of Chinese Academy of Sciences, Beijing, China
| | - Changqing Zeng
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,China National Center for Bioinformation, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Fan Liu
- CAS Key Laboratory of Genomic and Precision Medicine, Beijing Institute of Genomics, Chinese Academy of Sciences, Beijing, China.,China National Center for Bioinformation, Beijing, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yan Zhang
- Department of Cardiology, Peking University First Hospital, Beijing, China.,Institute of Cardiovascular Disease, Peking University First Hospital, Beijing, China
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Association of Methylenetetrahydrofolate Reductase C677T Gene Polymorphisms with Mild Cognitive Impairment Susceptibility: A Systematic Review and Meta-Analysis. Behav Neurol 2021; 2021:2962792. [PMID: 34580600 PMCID: PMC8464412 DOI: 10.1155/2021/2962792] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2021] [Accepted: 08/26/2021] [Indexed: 12/02/2022] Open
Abstract
Background Methylenetetrahydrofolate reductase (MTHFR) C677T (rs1801133) gene polymorphisms are related to a growing risk of Alzheimer's disease; however, whether this association applies to mild cognitive impairment (MCI) remains unclear. Objective We conducted this meta-analysis to evaluate the contribution of MTHFR C677T (rs1801133) gene variants to the risk of MCI. Methods PubMed, Embase, Web of Science, and China National Knowledge Infrastructure databases were searched from their inception to March 21, 2021, with language restricted to English or Chinese. We used fixed or random effects to examine the association between MTHFR C677T (rs1801133) gene variants and MCI susceptibility. Forest plots of pooled odds ratios (ORs) and 95% confidence intervals (CIs) were generated. Results Eight articles with 2,175 participants were included in the present meta-analysis. There was no significant association between MTHFR C677T (rs1801133) gene variants and MCI susceptibility under the allelic (OR, 1.318; 95% CI, 0.964–1.801; p = 0.084), dominant (OR, 1.296; 95% CI, 0.925–1.817; p = 0.132), recessive (OR, 1.397; 95% CI, 0.845–2.312; p = 0.193), heterozygous (OR, 1.031; 95% CI, 0.855–1.243; p = 0.749), or homozygous (OR, 1.506; 95% CI, 0.850–2.667; p = 0.160) models. Conclusion The results suggest that MTHFR C677T (rs1801133) gene polymorphisms are not associated with MCI susceptibility. However, large-scale studies covering various factors are required.
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Elqadi M, Eweidat K, Abu Sabha M, Yagmour A, Sabarneh A, Nasereddin A, Ereqat S. Methylenetetrahydrofolate reductase C677T gene polymorphism and the association with dyslipidemia in type 2 diabetic Palestinian patients. J Clin Lab Anal 2021; 35:e23994. [PMID: 34498771 PMCID: PMC8529134 DOI: 10.1002/jcla.23994] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 08/23/2021] [Accepted: 08/30/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Dyslipidemia in diabetes is common and characterized by hypertriglyceridemia with decreased levels of high-density lipoprotein. The objective of this study was to assess the prevalence of MTHFR C677T polymorphism in Palestinian T2DM patients and to investigate the association between this polymorphism and lipid profile in diabetic patients with and without dyslipidemia. METHODS A total of 208 T2DM patients including 98 with dyslipidemia and 110 without dyslipidemia were enrolled in this study. The MTHFR C677T genotyping was conducted by PCR-RFLP followed by agarose gel electrophoresis. RESULTS There were no significant differences in either the genotype distribution or allele frequency in T2DM patients with or without dyslipidemia (37.8% CC, 54% CT, 8.2% TT vs. 48.2% CC, 41.8% CT, 11% TT; p = 0.209). However, among the dyslipidemic group, the TT carriers have a higher HDL level (46.8 ± 17.8) compared to (CC+CT) carriers (34.68 + 11.9) (p = 0.01). In the group without dyslipidemia, there was a significant elevation in diastolic blood pressure (DBP) among the CC carriers (83.6 ± 10.6) compared to those who carried at least one mutant allele (CT+TT) (78.1 ± 11.1) (p = 0.009). CONCLUSIONS The study shows that in our Palestinian population the MTHFR 677TT genotype lowers DBP significantly in patients without dyslipidemia and is related to increased level of HDL in diabetic dyslipidemia patients.
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Affiliation(s)
- Muawiyah Elqadi
- Faulty of Medicine, Al-Quds University, East Jerusalem, Palestine
| | - Khaled Eweidat
- Faulty of Medicine, Al-Quds University, East Jerusalem, Palestine
| | - Mosa Abu Sabha
- Faulty of Medicine, Al-Quds University, East Jerusalem, Palestine
| | - Asil Yagmour
- Faulty of Medicine, Al-Quds University, East Jerusalem, Palestine
| | - Anas Sabarneh
- Palestine Medical Complex, laboratories Division, Ramallah, Palestine
| | - Abedalmajeed Nasereddin
- Al-Quds Nutrition and Health Research institute Faculty of Medicine, Al-Quds University, East Jerusalem, Palestine
| | - Suheir Ereqat
- Biochemistry and Molecular Biology Department, Faculty of Medicine, Al-Quds University, East Jerusalem, Palestine
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Saebnia N, Neshati Z, Bahrami AR. Role of microRNAs in etiology of azoospermia and their application as non-invasive biomarkers in diagnosis of azoospermic patients. J Gynecol Obstet Hum Reprod 2021; 50:102207. [PMID: 34407467 DOI: 10.1016/j.jogoh.2021.102207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 08/08/2021] [Accepted: 08/11/2021] [Indexed: 11/18/2022]
Abstract
Azoospermia is a common cause of male infertility without any sperm in the semen and consists of ∼1% of all males and ∼15% of infertile ones. Currently, no accurate non-invasive diagnostic method exists for patients with azoospermia and testis biopsy is mandatory to determine if any spermatozoa exist in the testes. Studies have clarified that the expression of some distinct microRNAs shows alterations in azoospermic patients. MicroRNAs play critical roles during spermatogenesis and their dysregulation can defect this process. Here, we review studied microRNAs involved in the pathogenesis of azoospermia and their target genes. Moreover, we will imply the utility of seminal plasma microRNAs as non-invasive diagnostic biomarkers for azoospermia. We hope such studies could help patients with azoospermia in both diagnosis and treatment, in order that they could father their own biological children.
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Affiliation(s)
- Neda Saebnia
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
| | - Zeinab Neshati
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Novel Diagnostics and Therapeutics Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran.
| | - Ahmad Reza Bahrami
- Department of Biology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; Industrial Biotechnology Research Group, Institute of Biotechnology, Ferdowsi University of Mashhad, Mashhad, Iran
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Hoxha B, Hoxha M, Domi E, Gervasoni J, Persichilli S, Malaj V, Zappacosta B. Folic Acid and Autism: A Systematic Review of the Current State of Knowledge. Cells 2021; 10:cells10081976. [PMID: 34440744 PMCID: PMC8394938 DOI: 10.3390/cells10081976] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/04/2021] [Accepted: 07/27/2021] [Indexed: 12/30/2022] Open
Abstract
Folic acid has been identified to be integral in rapid tissue growth and cell division during fetal development. Different studies indicate folic acid’s importance in improving childhood behavioral outcomes and underline its role as a modifiable risk factor for autism spectrum disorders. The aim of this systematic review is to both elucidate the potential role of folic acid in autism spectrum disorders and to investigate the mechanisms involved. Studies have pointed out a potential beneficial effect of prenatal folic acid maternal supplementation (600 µg) on the risk of autism spectrum disorder onset, but opposite results have been reported as well. Folic acid and/or folinic acid supplementation in autism spectrum disorder diagnosed children has led to improvements, both in some neurologic and behavioral symptoms and in the concentration of one-carbon metabolites. Several authors report an increased frequency of serum auto-antibodies against folate receptor alpha (FRAA) in autism spectrum disorder children. Furthermore, methylene tetrahydrofolate reductase (MTHFR) polymorphisms showed a significant influence on ASD risk. More clinical trials, with a clear study design, with larger sample sizes and longer observation periods are necessary to be carried out to better evaluate the potential protective role of folic acid in autism spectrum disorder risk.
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Affiliation(s)
- Bianka Hoxha
- Department of Chemical-Pharmaceutical and Biomolecular Technologies, Faculty of Pharmacy, Catholic University “Our Lady of Good Counsel”, Rruga Dritan Hoxha, 1000 Tirana, Albania;
| | - Malvina Hoxha
- Department for Chemical-Toxicological and Pharmacological Evaluation of Drugs, Faculty of Pharmacy, Catholic University “Our Lady of Good Counsel”, Rruga Dritan Hoxha, 1000 Tirana, Albania; (E.D.); (B.Z.)
- Correspondence: ; Tel.: +355-42-273-290
| | - Elisa Domi
- Department for Chemical-Toxicological and Pharmacological Evaluation of Drugs, Faculty of Pharmacy, Catholic University “Our Lady of Good Counsel”, Rruga Dritan Hoxha, 1000 Tirana, Albania; (E.D.); (B.Z.)
| | - Jacopo Gervasoni
- Area Diagnostica di Laboratorio UOC Chimica, Biochimica e Biologia Molecolare Clinica Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy; (J.G.); (S.P.)
| | - Silvia Persichilli
- Area Diagnostica di Laboratorio UOC Chimica, Biochimica e Biologia Molecolare Clinica Fondazione Policlinico Universitario A. Gemelli IRCCS, Largo A. Gemelli 8, 00168 Rome, Italy; (J.G.); (S.P.)
| | - Visar Malaj
- Department of Economics, Faculty of Economy, University of Tirana, 1000 Tirana, Albania;
| | - Bruno Zappacosta
- Department for Chemical-Toxicological and Pharmacological Evaluation of Drugs, Faculty of Pharmacy, Catholic University “Our Lady of Good Counsel”, Rruga Dritan Hoxha, 1000 Tirana, Albania; (E.D.); (B.Z.)
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Amin YK. Single-nucleotide polymorphisms in MTHFR gene related to recurrent abortion. APPLIED NANOSCIENCE 2021. [DOI: 10.1007/s13204-021-01959-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mahmood S, Younas H, Younus A, Nathenial S. A narrative review on the role of folate-mediated one-carbon metabolism and its associated gene polymorphisms in posing risk to preeclampsia. Clin Exp Hypertens 2021; 43:487-504. [PMID: 34053381 DOI: 10.1080/10641963.2021.1916942] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Preeclampsia (PE) presents a major obstetrical problem for mother and fetus which is characterized by the onset of hypertension and proteinuria in formerly normotensive women. Altered folate-mediated one-carbon metabolism is one of the factors for PE development either due to nutritional insufficiencies such as folate deficiency or polymorphisms in genes that code for the key enzymes of the cycle. Commonly, there are four genes in the cycle whose polymorphisms have been described in relation to PE. These factors could cause elevation of homocysteine; the toxic metabolite, which subsequently leads to the development of PE. Sufficient levels of folate have been considered important during pregnancy and may reduce the risk of development of PE. This review aims at discussing genetic polymorphisms and nutritional deficiencies as probable predisposing factors and suggests considering fetal genotypes, varied ethnicities, and interaction of various other factors involved to render better conclusiveness to the present studies.
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Affiliation(s)
- Sadia Mahmood
- Department of Biochemistry, Kinnaird College for Women, Lahore, Pakistan
| | - Hooria Younas
- Department of Biochemistry, Kinnaird College for Women, Lahore, Pakistan
| | - Amna Younus
- Department of Biochemistry, Kinnaird College for Women, Lahore, Pakistan
| | - Sammar Nathenial
- Department of Biochemistry, Kinnaird College for Women, Lahore, Pakistan
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Minor allele of rs55763075 located in MTHFR is associated with the risk of cognitive impairment after anesthesia via modulating miR-34b. Sci Rep 2021; 11:11157. [PMID: 34045473 PMCID: PMC8159953 DOI: 10.1038/s41598-021-90229-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 04/29/2021] [Indexed: 11/27/2022] Open
Abstract
This study aimed to investigate the association between cognitive impairment after general anesthesia and rs55763075 polymorphisms. We enrolled and grouped patients undergoing general anesthesia according to their genotypes of rs55763075 polymorphism. Mini–Mental State Examination (MMSE) scoring was performed to evaluate the cognitive status of patients. Quantitative real-time PCR was carried out to analyze the expression of methylenetetrahydrofolate reductase (MTHFR) mRNA and miR-34b while Western blot was performed to evaluate the expression of MTHFR protein. Furthermore, we studied the effect of rs55763075 polymorphism on the expression of MEHFR via luciferase assay. Accordingly, we found that the MMSE score in GG/GA groups was significantly higher than that in AA group. And a significant reduction of MTHFR mRNA expression was observed in the serum and peripheral blood mononuclear cells (PBMCs) of patients carrying AA genotype compared with the patients carrying GG/GA genotypes. Moreover, the MTHFR expression was much lower in the cultured AA-genotyped cells transfected with miR-34b. Luciferase assay results also showed that miR-34b transfection reduced luciferase activity in the cells carrying A allele but not in cells carrying G allele. In summary, the data of this study showed that minor allele (A) of rs55763075 polymorphisms in the 3'-untranslated region of MTHFR mRNA generated a potential binding site for miR-34b, which led to reduced level of folic acid in the patients carrying the AA genotype. Furthermore, we found that the MMSE score of AA-genotyped patients was lower than that of patients carrying GG/GA genotypes.
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Effect of polymorphisms of MTHFR in controlled ovarian stimulation: a systematic review and meta-analysis. J Assist Reprod Genet 2021; 38:2237-2249. [PMID: 34032987 DOI: 10.1007/s10815-021-02236-8] [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: 04/14/2021] [Accepted: 05/12/2021] [Indexed: 10/21/2022] Open
Abstract
OBJECTIVE Although several studies have reported a potential impact of methylenetetrahydrofolate reductase (MTHFR) polymorphisms on controlled ovarian stimulation (COS), the results remain controversial. The aim of the systematic review and meta-analysis was to evaluate the effect of MTHFR polymorphism on COS outcomes. METHODS PubMed, Web of Science, Embase, and Cochrane Central Register of Controlled Trials databases were searched up to December 2, 2020. COS clinical outcomes based on gene polymorphisms were included. Two reviewers independently extracted the data. The primary outcome was the number of oocytes retrieved. The secondary outcomes were the number of metaphase II (MII) oocytes, stimulation duration, basal follicle-stimulating hormone (FSH) level, FSH dosage, positive pregnancy test, ongoing pregnancy rate, clinical pregnancy rate, miscarriage rate, and live birth rate. Meta-analysis was performed using a fixed-effect model or random-effect model with Review Man 5.3.5. Mean difference (MD) with 95% confidence intervals (95%CIs) was calculated for continuous outcomes. The quality assessment of included studies was evaluated by using the Newcastle-Ottawa Scale. RESULTS Eleven studies were included in the systematic review, and seven studies with 2015 participants were included in the meta-analysis. Basal FSH level was significantly lower in CC homozygotes than TT homozygotes (four studies, 867 participants, MD - 0.54, 95%CI - 0.85 to - 0.23, P = 0.0006; I2 = 0%) of MTHFR (rs1801133). FSH dose was significantly fewer in CC homozygotes compared with CT heterogeneous (three studies, 949 participants, MD - 75.78, 95%CI - 135.23 to - 16.33, P = 0.01; I2 = 32%) or CT/TT model (three studies, 1097 participants, MD - 80.18, 95%CI - 135.54 to - 24.81, P = 0.005; I2 = 42%). Differences in the oocytes retrieved and stimulation duration were insignificant. Gene variants on MTHFR (rs1801133) and MTHFR (rs1801131) were reported in ongoing pregnancy rate, clinical pregnancy rate, and live birth rate. CONCLUSION Studies to date indicate that polymorphisms of MTHFR could influence basal FSH level and FSH dose. The results could be useful to promote clinical practice on COS protocols. Further studies are needed to evaluate the clinical relevance of the multigene combination on COS.
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Blyth U, Craciunas L, Hudson G, Choudhary M. Maternal germline factors associated with aneuploid pregnancy loss: a systematic review. Hum Reprod Update 2021; 27:866-884. [PMID: 33969392 DOI: 10.1093/humupd/dmab010] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 03/02/2021] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Miscarriage describes the spontaneous loss of pregnancy before the threshold of viability; the vast majority occur before 12 weeks of gestation. Miscarriage affects one in four couples and is the most common complication of pregnancy. Chromosomal abnormalities of the embryo are identified in ∼50% of first trimester miscarriages; aneuploidy accounts for 86% of these cases. The majority of trisomic miscarriages are of maternal origin with errors occurring during meiotic division of the oocytes. Chromosome segregation errors in oocytes may be sporadic events secondary to advancing maternal age; however, there is increasing evidence to suggest possible maternal germline contributions to this. OBJECTIVE AND RATIONALE The objective of this review was to appraise critically the existing evidence relating to maternal germline factors associated with pregnancy loss secondary to embryo aneuploidy, identify limitations in the current evidence base and establish areas requiring further research. SEARCH METHODS The initial literature search was performed in September 2019 and updated in January 2021 using the electronic databases OVID MEDLINE, EMBASE and the Cochrane Library. No time or language restrictions were applied to the searches and only primary research was included. Participants were women who had suffered pregnancy loss secondary to numerical chromosomal abnormalities of the embryo. Study identification and subsequent data extraction were performed by two authors independently. The Newcastle-Ottawa Scale was used to judge the quality of the included studies. The results were synthesized narratively. OUTCOMES The literature search identified 2198 titles once duplicates were removed, of which 21 were eligible for inclusion in this systematic review. They reported on maternal germline factors having variable degrees of association with pregnancy loss of aneuploid origin. The Online Mendelian Inheritance in Man (OMIM) gene ontology database was used as a reference to establish the functional role currently attributed to the genes reported. The majority of the cases reported and included were secondary to the inheritance of maternal structural factors such as Robertsonian translocations, deletions and insertions. Germline factors with a plausible role in aneuploid pregnancy loss of maternal origin included skewed X-inactivation and CGG repeats in the fragile X mental retardation (FMR1) gene. Studies that reported the association of single gene mutations with aneuploid pregnancy loss were conflicting. Single gene mutations with an uncertain or no role in aneuploid pregnancy loss included mutations in synaptonemal complex protein 3 (SYCP3), mitotic polo-like kinase 4 (PLK4) and meiotic stromal antigen 3 (STAG3) spindle integrity variants and 5,10-methylenetetrahydrofolate reductase (MTHFR). WIDER IMPLICATIONS Identifying maternal genetic factors associated with an increased risk of aneuploidy will expand our understanding of cell division, non-disjunction and miscarriage secondary to embryo aneuploidy. The candidate germline factors identified may be incorporated in a screening panel for women suffering miscarriage of aneuploidy aetiology to facilitate counselling for subsequent pregnancies.
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Affiliation(s)
- Ursula Blyth
- Newcastle Fertility Centre at Life, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Laurentiu Craciunas
- Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Gavin Hudson
- Biosciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Meenakshi Choudhary
- Newcastle Fertility Centre at Life, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
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Wang G, Lin Z, Wang X, Sun Q, Xun Z, Xing B, Li Z. The association between 5, 10 - methylenetetrahydrofolate reductase and the risk of unexplained recurrent pregnancy loss in China: A Meta-analysis. Medicine (Baltimore) 2021; 100:e25487. [PMID: 33907097 PMCID: PMC8084099 DOI: 10.1097/md.0000000000025487] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Revised: 01/13/2021] [Accepted: 01/28/2021] [Indexed: 12/02/2022] Open
Abstract
BACKGROUD To analyze the correlation between gene polymorphisms of 5,10- methylenetetrahydrofolate reductase (MTHFR) and risk of unexplained recurrent pregnancy loss (URPL) in Chinese women. METHODS Eligible studies were searched in Pubmed, Embase, Web of Science, Wanfang, and China National Knowledge Infrastructure (CNKI) databases. Established inclusion criteria were used to screening articles, subsequently evaluate the quality of the included studies, Stata 16.0 PM and RevMan 5.3 software were conducted for meta-analysis. The pooled odds ratio (OR) with 95% confidence interval (CI) was determined to assess the relationship between MTHFR and risk of URPL in Chinese women. RESULTS For MTHFR C677T, fifty studies were included, involving 6677 URPL cases and 8111 controls. The overall results showed that MTHFR C677T was significantly correlated with URPL risk, especially in the homozygous model (TT vs CC; OR 3.06; 95% CI 2.56-3.66). For MTHFR A1298C, twenty-first studies were included, involving 3439 URPL cases and 3155 controls. The results showed that MTHFR A1298C was also significantly correlated with URPL risk in recessive (CC vs AC + AA; OR 1.55; 95% CI 1.25-1.93) and homozygous (CC vs AA; OR 1.53; 95% CI 1.22-1.91) models. In addition, sub-group results showed that no significant difference between north and south China populations in the MTHFR gene polymorphisms and URPL risk. Of note, the patients carrying MTHFR C677T and MTHFR A1298C joint mutants had no synergistic effect (OR 2.71; 95% CI 0.84-8.70) on the occurrence of URPL compared with the wild-type homozygous genotype (MTHFR 677CC/ MTHFR 1298AA). CONCLUSION Studies included in this meta-analysis suggested that MTHFR 677T allele and 677TT genotype and MTHFR 1298CC genotype were both associated with URPL; testing MTHFR C677T gene polymorphism was a more appropriate target compared with other mutations in the prediction of URPL.
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Waespe N, Strebel S, Jurkovic Mlakar S, Krajinovic M, Kuehni CE, Nava T, Ansari M. Genetic Predictors for Sinusoidal Obstruction Syndrome-A Systematic Review. J Pers Med 2021; 11:jpm11050347. [PMID: 33925809 PMCID: PMC8145271 DOI: 10.3390/jpm11050347] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Revised: 04/18/2021] [Accepted: 04/22/2021] [Indexed: 12/12/2022] Open
Abstract
Sinusoidal obstruction syndrome (SOS) is a potentially life-threatening complication after hematopoietic stem cell transplantation (HSCT) or antineoplastic treatment without HSCT. Genetic variants were investigated for their association with SOS, but the evidence is inconclusive. We performed a systematic literature review to identify genes, gene variants, and methods of association analyses of genetic markers with SOS. We identified 23 studies after HSCT and 4 studies after antineoplastic treatment without HSCT. One study (4%) performed whole-exome sequencing (WES) and replicated the analysis in an independent cohort, 26 used a candidate-gene approach. Three studies included >200 participants (11%), and six were of high quality (22%). Variants in 34 genes were tested in candidate gene studies after HSCT. Variants in GSTA1 were associated with SOS in three studies, MTHFR in two, and CPS1, CTH, CYP2B6, GSTM1, GSTP1, HFE, and HPSE in one study each. UGT2B10 and LNPK variants were identified in a WES analysis. After exposure to antineoplastic agents without HSCT, variants in six genes were tested and only GSTM1 was associated with SOS. There was a substantial heterogeneity of populations within and between studies. Future research should be based on sufficiently large homogenous samples, adjust for covariates, and replicate findings in independent cohorts.
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Affiliation(s)
- Nicolas Waespe
- CANSEARCH Research Platform in Pediatric Oncology and Hematology, University of Geneva, 1205 Geneva, Switzerland; (N.W.); (S.S.); (S.J.M.); (T.N.)
- Institute of Social and Preventive Medicine, University of Bern, 3012 Bern, Switzerland;
- Graduate School for Cellular and Biomedical Sciences (GCB), University of Bern, 3012 Bern, Switzerland
| | - Sven Strebel
- CANSEARCH Research Platform in Pediatric Oncology and Hematology, University of Geneva, 1205 Geneva, Switzerland; (N.W.); (S.S.); (S.J.M.); (T.N.)
- Institute of Social and Preventive Medicine, University of Bern, 3012 Bern, Switzerland;
- Graduate School for Health Sciences (GHS), University of Bern, 3012 Bern, Switzerland
| | - Simona Jurkovic Mlakar
- CANSEARCH Research Platform in Pediatric Oncology and Hematology, University of Geneva, 1205 Geneva, Switzerland; (N.W.); (S.S.); (S.J.M.); (T.N.)
| | - Maja Krajinovic
- Charles-Bruneau Cancer Center, CHU Sainte-Justine Research Center, Department of Pediatrics, Montreal, QC H3T 1C5, Canada;
- Clinical Pharmacology Unit, Department of Pediatrics, CHU Sainte-Justine, Montreal, QC H3T 1C5, Canada
- Department of Pharmacology, Faculty of Medicine, University of Montreal, Montreal, QC H3T 1J4, Canada
| | - Claudia Elisabeth Kuehni
- Institute of Social and Preventive Medicine, University of Bern, 3012 Bern, Switzerland;
- Division of Pediatric Hematology/Oncology, Department of Pediatrics, Inselspital, Bern University Hospital, University of Bern, 3012 Bern, Switzerland
| | - Tiago Nava
- CANSEARCH Research Platform in Pediatric Oncology and Hematology, University of Geneva, 1205 Geneva, Switzerland; (N.W.); (S.S.); (S.J.M.); (T.N.)
- Department of Women, Children and Adolescents, Division of Pediatric Oncology and Hematology, Geneva University Hospital, 1205 Geneva, Switzerland
| | - Marc Ansari
- CANSEARCH Research Platform in Pediatric Oncology and Hematology, University of Geneva, 1205 Geneva, Switzerland; (N.W.); (S.S.); (S.J.M.); (T.N.)
- Department of Women, Children and Adolescents, Division of Pediatric Oncology and Hematology, Geneva University Hospital, 1205 Geneva, Switzerland
- Correspondence: ; Tel.: +41-79-553-6100
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Mabhida SE, Mashatola L, Kaur M, Sharma JR, Apalata T, Muhamed B, Benjeddou M, Johnson R. Hypertension in African Populations: Review and Computational Insights. Genes (Basel) 2021; 12:genes12040532. [PMID: 33917487 PMCID: PMC8067483 DOI: 10.3390/genes12040532] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 03/17/2021] [Accepted: 03/18/2021] [Indexed: 01/11/2023] Open
Abstract
Hypertension (HTN) is a persistent public health problem affecting approximately 1.3 billion individuals globally. Treatment-resistant hypertension (TRH) is defined as high blood pressure (BP) in a hypertensive patient that remains above goal despite use of ≥3 antihypertensive agents of different classes including a diuretic. Despite a plethora of treatment options available, only 31.0% of individuals have their HTN controlled. Interindividual genetic variability to drug response might explain this disappointing outcome because of genetic polymorphisms. Additionally, the poor knowledge of pathophysiological mechanisms underlying hypertensive disease and the long-term interaction of antihypertensive drugs with blood pressure control mechanisms further aggravates the problem. Furthermore, in Africa, there is a paucity of pharmacogenomic data on the treatment of resistant hypertension. Therefore, identification of genetic signals having the potential to predict the response of a drug for a given individual in an African population has been the subject of intensive investigation. In this review, we aim to systematically extract and discuss African evidence on the genetic variation, and pharmacogenomics towards the treatment of HTN. Furthermore, in silico methods are utilized to elucidate biological processes that will aid in identifying novel drug targets for the treatment of resistant hypertension in an African population. To provide an expanded view of genetic variants associated with the development of HTN, this study was performed using publicly available databases such as PubMed, Scopus, Web of Science, African Journal Online, PharmGKB searching for relevant papers between 1984 and 2020. A total of 2784 articles were reviewed, and only 42 studies were included following the inclusion criteria. Twenty studies reported associations with HTN and genes such as AGT (rs699), ACE (rs1799752), NOS3 (rs1799983), MTHFR (rs1801133), AGTR1 (rs5186), while twenty-two studies did not show any association within the African population. Thereafter, an in silico predictive approach was utilized to identify several genes including CLCNKB, CYPB11B2, SH2B2, STK9, and TBX5 which may act as potential drug targets because they are involved in pathways known to influence blood pressure. Next, co-expressed genes were identified as they are controlled by the same transcriptional regulatory program and may potentially be more effective as multiple drug targets in the treatment regimens for HTN. Genes belonging to the co-expressed gene cluster, ACE, AGT, AGTR1, AGTR2, and NOS3 as well as CSK and ADRG1 showed enrichment of G-protein-coupled receptor activity, the classical targets of drug discovery, which mediate cellular signaling processes. The latter is of importance, as the targeting of co-regulatory gene clusters will allow for the development of more effective HTN drug targets that could decrease the prevalence of both controlled and TRH.
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Affiliation(s)
- Sihle E. Mabhida
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; (S.E.M.); (J.R.S.)
- Department of Biotechnology, Faculty of Natural Science, University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa;
| | - Lebohang Mashatola
- School of Molecular and Cell Biology, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa; (L.M.); (M.K.)
| | - Mandeep Kaur
- School of Molecular and Cell Biology, University of the Witwatersrand, Private Bag 3, Johannesburg 2050, South Africa; (L.M.); (M.K.)
| | - Jyoti R. Sharma
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; (S.E.M.); (J.R.S.)
| | - Teke Apalata
- Division of Medical Microbiology, Department of Laboratory-Medicine and Pathology, Faculty of Health Sciences, Walter Sisulu University and National Health Laboratory Services, Mthatha 5100, South Africa;
| | - Babu Muhamed
- Hatter Institute for Cardiovascular Diseases Research in Africa, Department of Medicine, University of Cape Town, Cape Town 7535, South Africa;
- Children’s National Health System, Division of Cardiology, Washington, DC 20010, USA
| | - Mongi Benjeddou
- Department of Biotechnology, Faculty of Natural Science, University of the Western Cape, Private Bag X17, Bellville, Cape Town 7535, South Africa;
| | - Rabia Johnson
- Biomedical Research and Innovation Platform, South African Medical Research Council, Tygerberg 7505, South Africa; (S.E.M.); (J.R.S.)
- Division of Medical Physiology, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg 7505, South Africa
- Correspondence: ; Tel.: +27-21-938-0866
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Li HH, Li XQ, Sai LT, Cui Y, Xu JH, Zhou C, Zheng J, Li XF, Liu HX, Zhao YJ. Association of homocysteine with ankylosing spondylitis: a systematic review and meta-analysis. Adv Rheumatol 2021; 61:17. [PMID: 33691801 PMCID: PMC7944467 DOI: 10.1186/s42358-021-00175-7] [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: 11/05/2020] [Accepted: 03/02/2021] [Indexed: 11/16/2022] Open
Abstract
Background Hyperhomocysteinemia is associated with autoimmune diseases such as ankylosing spondylitis (AS), systemic lupus erythematosus (SLE), and rheumatoid arthritis (RA). Current findings regarding plasma/serum homocysteine (HCY) levels in AS patients are inconsistent. This study aims to systematically evaluate the association between circulating HCY levels and AS. Methods Online electronic databases (PubMed, Web of Science, Embase, ScienceDirect, China National Knowledge Infrastructure (CNKI), and Wanfang data) were used to retrieve all relevant articles published up to May 7, 2020. The pooled standardized mean difference (SMD) with 95% confidence interval (CI) was calculated using the random-effect model, Stata16 software. Results Nine articles containing 778 AS patients and 522 controls were included in this meta-analysis. No significant differences in HCY levels were found between AS and control groups (pooled SMD = 0.46, 95% CI = − 0.30 to 1.23, P = 0.23). However, subgroup analysis suggested that HCY levels were significantly higher (P < 0.05) in the AS group treated with methotrexate (MTX) compared with the control group. In contrast, HCY levels were significantly (P < 0.05) lower in the AS group receiving anti-TNF-α treatment compared with the control group. No significant differences were detected between HCY levels and disease activity scores (Bath AS disease activity index, BASDAI), and methylenetetrahydrofolate reductase (MTHFR) C677T genotype. Conclusion This meta-analysis indicates that HCY levels are similar between AS and controls, and do not correlate with disease activity. However, different medical treatments cause fluctuations of circulating HCY levels in AS patients. Further and larger-scale studies are needed to confirm these findings. Trial registration This study was registered at international prospective register of systematic reviews (PROSPERO), registration number: CRD42020184426.
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Affiliation(s)
- Hui-Hui Li
- Department of Obstetrics and Gynecology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China.,Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI, 53715, USA
| | - Xue-Quan Li
- Department of Gastroenterology, Shouguang People's Hospital, Shouguang, 262700, Shandong, China
| | - Lin-Tao Sai
- Department of Infectious Diseases, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Yi Cui
- Department of Intensive Care Unit, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Jia-Hui Xu
- Shandong First Medical University & Shandong Academic of Medical Sciences, Jinan, 250000, Shandong, China
| | - Chi Zhou
- School of Animal and Comparative Biomedical Sciences, University of Arizona, Tucson, AZ, USA
| | - Jing Zheng
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI, 53715, USA
| | - Xing-Fu Li
- Department of Rheumatology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China
| | - Hua-Xiang Liu
- Department of Rheumatology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China.
| | - Ying-Jie Zhao
- Department of Obstetrics and Gynecology, University of Wisconsin-Madison, Madison, WI, 53715, USA. .,Department of Rheumatology, Qilu Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250012, Shandong, China.
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Differences in MTHFR and LRRK2 variant's association with sporadic Parkinson's disease in Mexican Mestizos correlated to Native American ancestry. NPJ Parkinsons Dis 2021; 7:13. [PMID: 33574311 PMCID: PMC7878860 DOI: 10.1038/s41531-021-00157-y] [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] [Received: 07/10/2020] [Accepted: 01/08/2021] [Indexed: 01/30/2023] Open
Abstract
Parkinson's disease (PD), a common neurodegenerative disorder, has a complex etiology where environmental and genetic factors intervene. While a number of genes and variants have been identified in recent decades as causative or protective agents of this condition, a limited number of studies have been conducted in mixed populations, such as Mexican Mestizos. The historical convergence of two founding groups and three ethnicities, and the increasing north-to-south gradient of Native American ancestry in Mexico resulted in a subpopulation structure with considerable genetic diversity. In this work, we investigate the influence of 21 known susceptibility variants for PD. Our case-control study, with a cohort of 311 Mexican Mestizo subjects, found a significant risk association for the variant rs1491942 in LRRK2. However, when stratification by ancestry was performed, a risk effect for MTHFR rs1801133 was observed only in the group with the highest percentage of European ancestry, and the PD risk effect for LRRK2 rs1491942 was significant in subjects with a higher ratio of Native American ancestry. Meta-analyses of these SNP revealed the effect of LRRK2 rs1491942 to be even more significant than previously described in populations of European descent. Although corroboration is necessary, our findings suggest that polymorphism rs1491942 may be useful as a risk marker of PD in Mexican Mestizos with greater Native American ancestry. The absence of associations with the remaining known risk factors is, in itself, a relevant finding and invites further research into the shared risk factors' role in the pathophysiological mechanisms of this neurodegenerative disorder.
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Abdulla R, Kudkuli J, Kapoor S, Prabhu V, Shetty P, Aziz NZ. Single-nucleotide polymorphisms of methylenetetrahydrofolate reductase gene in a South Indian cohort with nonsyndromic cleft lip with or without palate. J Oral Maxillofac Pathol 2021; 24:453-458. [PMID: 33967480 PMCID: PMC8083445 DOI: 10.4103/jomfp.jomfp_329_19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2019] [Revised: 06/03/2020] [Accepted: 07/30/2020] [Indexed: 12/04/2022] Open
Abstract
Objective: Clefts of the lip, with or without cleft palate and cleft palate only, collectively called as orofacial clefts (OFCs) are one of the most common congenital malformations with varying degrees of penetrance and phenotype expressions. The aim of this study was to investigate the association between methylenetetrahydrofolate reductase (MTHFR) cytosine-to-thymine (c. 677 C>T), adenine-to-cytosine (c.1298 A>C) single- nucleotide polymorphisms (SNPs) and South Indian patients with the nonsyndromic cleft lip with or without palate (NSCL ± P). Methods: A cohort consisting of 25 cases of NSCL ± P and 18 controls from a South Indian cohort were included in this case–control study. Genetic analysis of c.677C>T and c.1298A C polymorphisms in the MTHFR gene was carried out using Sanger sequencing and analyzed from chromatogram profiles. Data interpretation was done using statistical software MedCalc Statistical Software version 16.2 and the Statistical Package for the Social Sciences (SPSS version 22.0). Results: DNA sequence analysis of the MTHFR gene revealed c. 677C>T and c. 1298A>C polymorphisms in 16% and 76% of NSCL ± P cases, respectively. Heterozygous variant in MTHFR c. 1298A>C polymorphism was found to be a significant risk factor (P = 0.0164) for NSCL ± P in South Indian ethnic population. c.677C>T polymorphism, in particular, was apparently dormant overall in the study population. These results offer certain novelty in terms of the distinctive pattern in SNPs of genotypes observed in the study. Conclusion: NSCL ± P is one of the most common and challenging congenital malformations with complex etiological basis. Common risk factors such as MTHFR SNPs, namely c.677C>T and c.1298A>C, are subjected to variations in terms of ethnic group, geographic region and micro/macro-environmental factors. Overall, our study has explored part of South Indian ethnic population and revealed a different and unique distribution of mutations in this sample population.
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Affiliation(s)
- Riaz Abdulla
- Department of Oral Pathology and Microbiology, Yenepoya Dental College, Yenepoya (Deemed to be University), Mangalore, Karnataka, India.,Department of Biomaterials and Research Centre, Yenepoya Dental College, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - Jagadish Kudkuli
- Yenepoya Research Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - Saketh Kapoor
- Stem Cells and Regenerative Medicine Centre, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - Vishnudas Prabhu
- Department of Oral Pathology and Microbiology, Yenepoya Dental College, Yenepoya (Deemed to be University), Mangalore, Karnataka, India
| | - Pushparaja Shetty
- Department of Oral Pathology, A B Shetty Memorial Institute of Dental Sciences, NITTE (Deemed to be University), Mangalore, Karnataka, India
| | - Niloufa Z Aziz
- Department of Oral Pathology, Century International Institute of Dental Sciences, Poinachi, Kerala, India
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Dias S, Adam S, Rheeder P, Pheiffer C. No Association Between ADIPOQ or MTHFR Polymorphisms and Gestational Diabetes Mellitus in South African Women. Diabetes Metab Syndr Obes 2021; 14:791-800. [PMID: 33658815 PMCID: PMC7917309 DOI: 10.2147/dmso.s294328] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Accepted: 01/16/2021] [Indexed: 12/26/2022] Open
Abstract
PURPOSE Gestational diabetes mellitus (GDM) is a growing public health concern. GDM affects approximately 14% of pregnancies globally, and without effective treatment, is associated with short- and long-term complications in mother and child. Lower serum adiponectin (ADIPOQ) concentrations and aberrant DNA methylation have been reported during GDM. The aim of this study was to investigate the association between the ADIPOQ -11377C>G and -11391G>A, and methylenetetrahydrofolate reductase (MTHFR) 677C>T polymorphisms and GDM in a population of black South African women. MATERIALS AND METHODS DNA was isolated from the peripheral blood of 447 pregnant women with (n=116) or without (n=331) GDM, where after ADIPOQ (rs266729 and rs17300539) and MTHFR (rs1801133) polymorphisms were genotyped using TaqMan Quantitative Real-Time PCR analysis. RESULTS Women with GDM had a higher body mass index (p=0.012), were more insulin resistant (p<0.001) and had lower adiponectin levels (p=0.013) compared to pregnant women with normoglycemia. Genotypic, dominant and recessive genetic models showed no association between ADIPOQ rs266729 and rs17300539 and MTHFR rs1801133 polymorphisms and GDM. Intriguingly, the risk G allele of ADIPOQ rs266729 was associated with higher fasting glucose and insulin concentrations, while the T allele in MTHFR rs1801133 was associated with higher fasting insulin concentrations only. CONCLUSION ADIPOQ rs266729 and rs17300539 and MTHFR rs1801133 polymorphisms are not associated with GDM in a population of black South African women. These findings suggest that these single nucleotide polymorphisms (SNPs) do not individually increase GDM risk in the African population. However, the role of these SNPs in possible gene-gene or gene-environment interactions remain to be established.
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Affiliation(s)
- Stephanie Dias
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council, Cape Town, 7505, South Africa
- Department of Obstetrics and Gynecology, University of Pretoria, Pretoria, 0001, South Africa
| | - Sumaiya Adam
- Department of Obstetrics and Gynecology, University of Pretoria, Pretoria, 0001, South Africa
| | - Paul Rheeder
- Department of Internal Medicine, Faculty of Health Sciences, University of Pretoria, Pretoria, 0001, South Africa
| | - Carmen Pheiffer
- Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council, Cape Town, 7505, South Africa
- Division of Medical Physiology, Faculty of Health Sciences, Stellenbosch University, Cape Town, 7505, South Africa
- Correspondence: Carmen Pheiffer Biomedical Research and Innovation Platform (BRIP), South African Medical Research Council, Tygerberg, 7505, South AfricaTel +27 21 938 0292 Email
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Sambyal V, Lal H, Sharma B, Guleria K, Singh N, Uppal M, Manjari M, Sudan M. Association of MTHFR 677C>T polymorphism with breast cancer risk: A case–control study and meta-analysis. J Cancer Res Ther 2021; 18:1451-1460. [DOI: 10.4103/jcrt.jcrt_1063_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Sedley L. Advances in Nutritional Epigenetics-A Fresh Perspective for an Old Idea. Lessons Learned, Limitations, and Future Directions. Epigenet Insights 2020; 13:2516865720981924. [PMID: 33415317 PMCID: PMC7750768 DOI: 10.1177/2516865720981924] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 11/25/2020] [Indexed: 12/11/2022] Open
Abstract
Nutritional epigenetics is a rapidly expanding field of research, and the natural modulation of the genome is a non-invasive, sustainable, and personalized alternative to gene-editing for chronic disease management. Genetic differences and epigenetic inflexibility resulting in abnormal gene expression, differential or aberrant methylation patterns account for the vast majority of diseases. The expanding understanding of biological evolution and the environmental influence on epigenetics and natural selection requires relearning of once thought to be well-understood concepts. This research explores the potential for natural modulation by the less understood epigenetic modifications such as ubiquitination, nitrosylation, glycosylation, phosphorylation, and serotonylation concluding that the under-appreciated acetylation and mitochondrial dependant downstream epigenetic post-translational modifications may be the pinnacle of the epigenomic hierarchy, essential for optimal health, including sustainable cellular energy production. With an emphasis on lessons learned, this conceptional exploration provides a fresh perspective on methylation, demonstrating how increases in environmental methane drive an evolutionary down regulation of endogenous methyl groups synthesis and demonstrates how epigenetic mechanisms are cell-specific, making supplementation with methyl cofactors throughout differentiation unpredictable. Interference with the epigenomic hierarchy may result in epigenetic inflexibility, symptom relief and disease concomitantly and may be responsible for the increased incidence of neurological disease such as autism spectrum disorder.
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Affiliation(s)
- Lynda Sedley
- Bachelor of Health Science (Nutritional Medicine),
GC Biomedical Science (Genomics), The Research and Educational Institute of
Environmental and Nutritional Epigenetics, Queensland, Australia
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Bhatia M, Thakur J, Suyal S, Oniel R, Chakraborty R, Pradhan S, Sharma M, Sengupta S, Laxman S, Masakapalli SK, Bachhawat AK. Allosteric inhibition of MTHFR prevents futile SAM cycling and maintains nucleotide pools in one-carbon metabolism. J Biol Chem 2020; 295:16037-16057. [PMID: 32934008 PMCID: PMC7681022 DOI: 10.1074/jbc.ra120.015129] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Revised: 09/12/2020] [Indexed: 01/05/2023] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) links the folate cycle to the methionine cycle in one-carbon metabolism. The enzyme is known to be allosterically inhibited by SAM for decades, but the importance of this regulatory control to one-carbon metabolism has never been adequately understood. To shed light on this issue, we exchanged selected amino acid residues in a highly conserved stretch within the regulatory region of yeast MTHFR to create a series of feedback-insensitive, deregulated mutants. These were exploited to investigate the impact of defective allosteric regulation on one-carbon metabolism. We observed a strong growth defect in the presence of methionine. Biochemical and metabolite analysis revealed that both the folate and methionine cycles were affected in these mutants, as was the transsulfuration pathway, leading also to a disruption in redox homeostasis. The major consequences, however, appeared to be in the depletion of nucleotides. 13C isotope labeling and metabolic studies revealed that the deregulated MTHFR cells undergo continuous transmethylation of homocysteine by methyltetrahydrofolate (CH3THF) to form methionine. This reaction also drives SAM formation and further depletes ATP reserves. SAM was then cycled back to methionine, leading to futile cycles of SAM synthesis and recycling and explaining the necessity for MTHFR to be regulated by SAM. The study has yielded valuable new insights into the regulation of one-carbon metabolism, and the mutants appear as powerful new tools to further dissect out the intersection of one-carbon metabolism with various pathways both in yeasts and in humans.
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Affiliation(s)
- Muskan Bhatia
- Department of Biological Sciences, Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Punjab, India
| | - Jyotika Thakur
- BioX Center, School of Basic Sciences, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh, India
| | - Shradha Suyal
- Department of Biological Sciences, Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Punjab, India
| | - Ruchika Oniel
- Institute for Stem Cell Science and Regenerative Medicine (inStem), NCBS-TIFR Campus, Bangalore, India
| | - Rahul Chakraborty
- Council of Scientific and Industrial Research-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Shalini Pradhan
- Council of Scientific and Industrial Research-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Monika Sharma
- Department of Chemical Sciences, Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Punjab, India
| | - Shantanu Sengupta
- Council of Scientific and Industrial Research-Institute of Genomics and Integrative Biology, New Delhi, India
| | - Sunil Laxman
- Institute for Stem Cell Science and Regenerative Medicine (inStem), NCBS-TIFR Campus, Bangalore, India
| | - Shyam Kumar Masakapalli
- BioX Center, School of Basic Sciences, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh, India
| | - Anand Kumar Bachhawat
- Department of Biological Sciences, Indian Institute of Science Education and Research Mohali, S.A.S. Nagar, Punjab, India.
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