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Omar Abidi, Mohammed Haissam, Halima Nahili, Abdessamad El Azhari, Said Hilmani, Abdelhamid Barakat
BACKGROUND: The number of deaths from hemorrhagic strokes is about twice as high than the number of deaths from ischemic strokes. Genetic risk assessment could play important roles in preventive and therapeutic strategies. The present study was aimed to evaluate whether the MTHFR gene polymorphisms could increase the risk of cerebral hemorrhage in Moroccan patients. METHODS: A total of 113 patients with hemorrhagic stroke and 323 healthy controls were included in this case-control study...
March 16, 2018: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
Rui Zhang, Caihong Huo, Xingning Wang, Bo Dang, Yaning Mu, Yuying Wang
BACKGROUND/AIMS: Published studies indicated that the MTHFR gene polymorphisms C677T and A1298C are associated with congenital heart disease (CHD) risk in children, but obtained inconsistent results. Our study aims to reach a more accurate association between these two polymorphisms and CHD risk. METHODS: Eligible studies were obtained by screening the PubMed, Embase, China National Knowledge Infrastructure, Wan Fang and VIP databases based on designed searching strategy...
March 15, 2018: Cellular Physiology and Biochemistry
Tae-Keun Ahn, Jung Oh Kim, Hyun Woo Kim, Han Sung Park, Jeong Hyun Shim, Alexander E Ropper, In Bo Han, Nam Keun Kim
Postmenopausal osteoporosis is one of the most prominent diseases in postmenopausal women and it is increasing in prevalence with the aging population. Furthermore, osteoporosis and osteoporotic vertebral compression fractures (OVCFs) are related to mortality and decreased quality of life. Therefore, searching for biomarkers that are able to identify postmenopausal women who are at high risk of developing OVCFs is an effective strategy for improving the quality of life of patients and alleviating social and economic burdens...
March 12, 2018: International Journal of Molecular Sciences
M C Jiménez-González, D Santiago-Germán, E F Castillo-Henkel, J A Alvarado-Moreno, J Hernández-Juárez, A Leaños-Miranda, A Majluf-Cruz, I Isordia-Salas
INTRODUCTION: Numerous polymorphisms in candidate genes coding for haemostatic system proteins have been proposed as risk factors for thrombosis. METHODS: We performed a case-control study of consecutive ischaemic stroke survivors aged ≤ 45 years, treated at our neurology department from 2006 to 2014. Polymerase chain reaction-restriction fragment length polymorphism identified the following polymorphisms: Thr325Ile and Ala147Thr in TAFI, 4G/5G in PAI-1, PLA1/A2 in platelet glycoprotein IIb/IIIa, Glu298Asp in eNOS, and C677T in 5,10-MTHFR...
March 8, 2018: Neurología: Publicación Oficial de la Sociedad Española de Neurología
Mansi Desai, J B Chauhan
Methylenetetrahydrofolate reductase (MTHFR) is a key enzyme involved in folate metabolism and plays a central role in DNA methylation and biosynthesis. MTHFR mutations may alter the cellular folate supply which in turn affects nucleic acid synthesis, DNA methylation and chromosomal damage. The identification of number of SNPs in the human genome growing nowadays and hence, the evaluation of functional & structural consequences of these SNPs is very laborious by means of experimental analysis. Therefore, in the present study, recently developed various computational algorithms have been used which can predict the functional and structural consequences of the SNPs...
February 27, 2018: Computational Biology and Chemistry
Sarah Yang, Jeonghee Lee, Yoon Park, Eun Kyung Lee, Yul Hwangbo, Junsun Ryu, Joohon Sung, Jeongseon Kim
The effect of alcohol intake on thyroid cancer is unestablished, and its interaction effects with genetic susceptibility are unclear. In this case-control study, the relationship among alcohol intake, the methylenetetrahydrofolate reductase (MTHFR) gene, and thyroid cancer risk has been evaluated. In total, 642 cases and 642 controls of Korean origin were included, and the genetic variants C677T and A1298C of the MTHFR gene were analysed. The interactions between alcohol-consumption behaviour and genetic variants were analysed with a likelihood ratio test, wherein a multiplicative interaction term was added to a logistic regression model...
March 6, 2018: Scientific Reports
Karolina Tecza, Jolanta Pamula-Pilat, Joanna Lanuszewska, Dorota Butkiewicz, Ewa Grzybowska
The differences in patients' response to the same medication, toxicity included, are one of the major problems in breast cancer treatment. Chemotherapy toxicity makes a significant clinical problem due to decreased quality of life, prolongation of treatment and reinforcement of negative emotions associated with therapy. In this study we evaluated the genetic and clinical risk factors of FAC chemotherapy-related toxicities in the group of 324 breast cancer patients. Selected genes and their polymorphisms were involved in FAC drugs transport ( ABCB1, ABCC2, ABCG2,SLC22A16 ), metabolism ( ALDH3A1, CBR1, CYP1B1, CYP2C19, DPYD, GSTM1, GSTP1, GSTT1, MTHFR,TYMS ), DNA damage recognition, repair and cell cycle control ( ATM, ERCC1, ERCC2, TP53, XRCC1 )...
February 6, 2018: Oncotarget
Maira Giannelou, Andrianos Nezos, Sofia Fragkioudaki, Dimitra Kasara, Kyriaki Maselou, Nikolaos Drakoulis, Dimitris Ioakeimidis, Haralampos M Moutsopoulos, Clio P Mavragani
OBJECTIVE: Elevated concentrations of homocysteine have been previously identified as an independent risk factor for subclinical atherosclerosis in patients with systemic lupus erythematosus (SLE). Given that heightened homocysteine levels are known to be strongly influenced by genetic factors, in the current study we investigated the contribution of high homocysteine levels as well as of functional polymorphisms of the gene encoding for the enzyme 5, 10- methylenetetrahydrofolate reductase to atherosclerotic disease characterizing SLE patients...
February 28, 2018: Clinical Immunology: the Official Journal of the Clinical Immunology Society
Shirisha Chittiboyina, Zhongxue Chen, E Gabriela Chiorean, Lisa M Kamendulis, Barbara A Hocevar
BACKGROUND: Pancreatic cancer is the third leading cause of cancer related deaths in the United States. Several dietary factors have been identified that modify pancreatic cancer risk, including low folate levels. In addition to nutrition and lifestyle determinants, folate status may be influenced by genetic factors such as single nucleotide polymorphisms (SNPs). In the present study, we investigated the association between folate levels, genetic polymorphisms in genes of the folate pathway, and pancreatic cancer...
2018: PloS One
Lars Erichsen, Foued Ghanjati, Agnes Beermann, Cedric Poyet, Thomas Hermanns, Wolfgang A Schulz, Hans-Helge Seifert, Peter J Wild, Lorenz Buser, Alexander Kröning, Stefan Braunstein, Martin Anlauf, Silvia Jankowiak, Mohamed Hassan, Marcelo L Bendhack, Marcos-Arauzo Bravo, Simeon Santourlidis
Urothelial carcinoma (UC), the most common cancer of the urinary bladder causes severe morbidity and mortality, e.g. about 40.000 deaths in the EU annually, and incurs considerable costs for the health system due to the need for prolonged treatments and long-term monitoring. Extensive aberrant  DNA methylation is described to prevail in urothelial carcinoma and is thought to contribute to genetic instability, altered gene expression and tumor progression. However, it is unknown how this epigenetic alteration arises during carcinogenesis...
February 22, 2018: Scientific Reports
Chunchen Wang, Jieying Li
RATIONALE: Phenylketonuria (PKU) is a metabolic disorder, which manifests a progressive irreversible neurological impairment during infancy and childhood. Hyperhomocysteinemia also showed that it might be involved in pathophysiology of many neuropsychiatric disorders. The late-onset clinical manifestations of these 2 diseases have not been reported elsewhere. We speculated that the late-onset PKU is caused by 2 kinds of metabolic dysfunction synergistically, especially a short period of irregular diet directly caused clinical symptoms...
February 2018: Medicine (Baltimore)
S Pamela K Shiao, James Grayson, Chong Ho Yu, Brandi Wasek, Teodoro Bottiglieri
For the personalization of polygenic/omics-based health care, the purpose of this study was to examine the gene-environment interactions and predictors of colorectal cancer (CRC) by including five key genes in the one-carbon metabolism pathways. In this proof-of-concept study, we included a total of 54 families and 108 participants, 54 CRC cases and 54 matched family friends representing four major racial ethnic groups in southern California (White, Asian, Hispanics, and Black). We used three phases of data analytics, including exploratory, family-based analyses adjusting for the dependence within the family for sharing genetic heritage, the ensemble method, and generalized regression models for predictive modeling with a machine learning validation procedure to validate the results for enhanced prediction and reproducibility...
February 16, 2018: Journal of Personalized Medicine
N Kotova, V Maichuk, O Fedorenko
Neural tube defects occupy second place in frequency after the defects of the cardiovascular system. The folate metabolism violation and hyperhomocysteinemia in women are proved to be the leading risk factors for the NTD of the fetus. Polymorphism of the 5,10-methylenetetrahydrofolate reductase gene (MTHFR) is a genetic determinant of folate metabolism violation. Admission of folic acid in a standard dose of 0.4 mg and / or the use of fortified foods does not allow reaching the protective level of folic acid if there is a mutation of the MTHFR gene or when several risk factors combine, which requires a higher dose of folic acid...
January 2018: Georgian Medical News
Brenda Gamboa-Loira, César Hernández-Alcaraz, A Jay Gandolfi, Mariano E Cebrián, Ana Burguete-García, Angélica García-Martínez, Lizbeth López-Carrillo
BACKGROUND: Nutrients and genetic polymorphisms participating in one-carbon metabolism may explain interindividual differences in inorganic arsenic (iAs) methylation capacity, which in turn may account for variations in susceptibility to iAs-induced diseases. OBJECTIVES: 1) To evaluate the association between polymorphisms in five one-carbon metabolism genes (FOLH1 c.223 T > C, MTHFD1 c.1958 G > A, MTHFR c.665 C > T, MTR c.2756 A > G, and MTRR c...
February 17, 2018: Environmental Research
Syed Shafia, Mahrukh H Zargar, Nabeela Khan, Rehana Ahmad, Zafar Amin Shah, Ravouf Asimi
AIM: The genetic variants of the factor V (G1691A), prothrombin (G20210A) and MTHFR (C677T) genes have been widely implicated as inherited risk factors for developing venous thrombosis. This study was undertaken to reveal the frequency of these mutations in Kashmiri patients with venous thromboembolism. METHODOLOGY: A case-control study was designed with 250 VTE patients and 250 healthy controls. The mutations were analysed using ARMS-PCR and PCR-RFLP approach. RESULT: The factor V Leiden G1691A mutation was found in 17/250 (6...
February 14, 2018: Gene
Juan Ni, Yaoxian Liu, Tao Zhou, Xiayu Wu, Xu Wang
OBJECTIVE: One-carbon metabolism (OCM) is essential for DNA synthesis and methylation. Single nucleotide polymorphisms (SNPs) within OCM genes may affect folic acid (FA) metabolism, disrupt homocysteine (Hcy) homeostasis, and increase the risk of disease. This study investigated the relationship between SNPs in key OCM genes and their association with blood FA and Hcy levels in a healthy population in Yunnan, China. METHODS: Six SNPs within five key OCM genes (MTHFR C677T, MTHFR A1298C, MS A2756G, MTRR A66G, CBS T833C, and SHMT C1420T) were genotyped in 300 healthy volunteers (148 males and 152 females) using polymerase chain reaction/restriction fragment length polymorphism...
February 16, 2018: Genetic Testing and Molecular Biomarkers
Renato Assis Machado, Isabela Porto de Toledo, Hercilio Martelli-Júnior, Silvia Regina Reis, Eliete Neves Silva Guerra, Ricardo D Coletta
BACKGROUND: Although various genes and genomic regions were described as of susceptibility for nonsyndromic oral clefts (NOC), recent reports have demonstrated significant interethnic variations in the genetic predisposition, a situation that affects the Brazilian population, one of the most admixed populations in the world. Therefore, the purpose of this review was to describe the available information on genetic risk markers for NOC in the Brazilian population. METHODS: A systematic search of the literature was performed using LILACS, LIVIVO, PubMed, Scopus, and Web of Science databases, and studies that investigated genetic susceptibility markers for NOC in the Brazilian population were retrieved...
February 15, 2018: Birth Defects Research
Sopio Garakanidze, Elísio Costa, Elsa Bronze-Rocha, Alice Santos-Silva, Giorgi Nikolaishvili, Irina Nakashidze, Nona Kakauridze, Salome Glonti, Rusudan Khukhunaishvili, Marina Koridze, Sarfraz Ahmad
Methylenetetrahydrofolate reductase ( MTHFR) gene polymorphism (C677T)] is a well-recognized genetic risk factor for venous thrombosis; however, its association with arterial thrombosis is still under debate. Herein, we evaluated the prevalence of MTHFR C677T polymorphism in Georgian patients in comparison with healthy individuals and its association with arterial thrombosis. We enrolled 214 participants: 101 with arterial thrombosis (71.3% males; mean age: 66.3 ± 12.1 years) and 113 controls (67.3% males; mean age: 56...
January 1, 2018: Clinical and Applied Thrombosis/hemostasis
Ya-Ling Yang, Hsiao-Ling Yang, S Pamela K Shiao
Hypertensive disorders in pregnancy (HDP) are devastating health hazards for both women and children. Both methylenetetrahydrofolate reductase ( MTHFR ) gene polymorphisms and air pollution can affect health status and result in increased risk of HDP for women. The major objective of this study was to investigate the effect of MTHFR polymorphisms, air pollution, and their interaction on the risk of HDP by using meta-predictive analytics. We searched various databases comprehensively to access all available studies conducted for various ethnic populations from countries worldwide, from 1997 to 2017...
February 13, 2018: International Journal of Environmental Research and Public Health
Habib Haybar, Mohammad Taha Jalali, Zeinab Deris Zayeri
BACKGROUNDS: Long term of diabetes cause other disease development such as cardiovascular disease (CVD). OBJECTIVE: Genetic can help us to predict cardiovascular disease in diabetic patients. Method and search strategy: we searched pubmed and googlescholar by the terms: Cardiovascular disease; Diabetes ; Polymorphism; Genetic from 2000 to 2017 then we included the relevant studies in our study. DISCUSSION: Essential role of inheritance in multifactorial disease is obviously clear, however, varies by disease and by other factors such as age of disease onset and subtype of disease...
February 11, 2018: Cardiovascular & Hematological Disorders Drug Targets
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