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Gogu AE, Jianu DC, Parv F, Motoc AGM, Axelerad A, Stuparu AZ, Gogu AA. Case report: Clinical profile, molecular genetics, and neuroimaging findings presenting in a patient with Kearns-Sayre syndrome associated with inherited thrombophilia. Front Neurol 2024; 14:1320757. [PMID: 38249739 PMCID: PMC10799339 DOI: 10.3389/fneur.2023.1320757] [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: 10/12/2023] [Accepted: 11/22/2023] [Indexed: 01/23/2024] Open
Abstract
Background Kearns-Sayre syndrome (KSS) is classified as one of the mitochondrial DNA (mtDNA) deletion syndromes with multisystemic involvement. Additionally, the negative prognosis is associated with inherited thrombophilia, which includes the presence of homozygous Factor V G1691A Leiden mutation, MTHFR gene polymorphisms C677T and A1298C, and PAI-1 675 homozygous genotype 5G/5G. Case presentation This case report presents a 48-year-old man with chronic progressive external ophthalmoplegia, bilateral ptosis, cerebellar ataxia, cardiovascular signs (syncope, dilated cardiomyopathy, and cardiac arrest) with electrocardiographic abnormalities (first-degree atrioventricular block and major right bundle branch block), endocrine dysfunction (short stature, growth hormone insufficiency, primary gonadal insufficiency, hypothyroidism, and secondary hyperparathyroidism), molecular genetic tests (MT-TL2 gene), and abnormal MRI brain images, thus leading to the diagnosis of KSS. The patient came back 4 weeks after the diagnosis to the emergency department with massive bilateral pulmonary embolism with syncope at onset, acute cardiorespiratory failure, deep left femoral-popliteal vein thrombophlebitis, and altered neurological status. In the intensive care unit, he received mechanical ventilation through intubation. Significant improvement was seen after 2 weeks. The patient tested positive for inherited thrombophilia and was discharged in stable conditions on a new treatment with Rivaroxaban 20 mg/day. At 6 months of follow-up, ECG-Holter monitoring and MRI brain images remained unchanged. However, after 3 months, the patient died suddenly while sleeping at home. Conclusion The genetic tests performed on KSS patients should also include those for inherited thrombophilia. By detecting these mutations, we can prevent major complications such as cerebral venous sinus thrombosis, coronary accidents, or sudden death.
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Affiliation(s)
- Anca Elena Gogu
- Department of Neurology, “Victor Babeş” University of Medicine and Pharmacy, Timișoara, Romania
- Centre for Cognitive Research in Neuropsychiatric Pathology (Neuropsy-Cog), Faculty of Medicine, “Victor Babeş” University of Medicine and Pharmacy, Timișoara, Romania
| | - Dragos Catalin Jianu
- Department of Neurology, “Victor Babeş” University of Medicine and Pharmacy, Timișoara, Romania
- Centre for Cognitive Research in Neuropsychiatric Pathology (Neuropsy-Cog), Faculty of Medicine, “Victor Babeş” University of Medicine and Pharmacy, Timișoara, Romania
| | - Florina Parv
- Department of Cardiology, “Victor Babeş” University of Medicine and Pharmacy, Timișoara, Romania
| | | | - Any Axelerad
- Department of Neurology, General Medicine Faculty, “Ovidius” University, Constanța, Romania
| | - Alina Zorina Stuparu
- Department of Neurology, General Medicine Faculty, “Ovidius” University, Constanța, Romania
| | - Andreea Alexandra Gogu
- Medicine Faculty, “Victor Babeş” University of Medicine and Pharmacy, Timișoara, Romania
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Masud R, Khan AUH, Baqai HZ, Iqbal A. The Correlation of MTHFR SNPs, Homocysteine, and Conventional Risk Predictors with Coronary Artery Disease. RUSS J GENET+ 2021. [DOI: 10.1134/s1022795421110077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Liu YT, Lin CC, Wang L, Nfor ON, Hsu SY, Lung CC, Tantoh DM, Chang HR, Liaw YP. Peripheral Vascular Disease Susceptibility Based on Diabetes Mellitus and rs17367504 Polymorphism of the MTHFR Gene. Diabetes Metab Syndr Obes 2021; 14:2381-2388. [PMID: 34079316 PMCID: PMC8165095 DOI: 10.2147/dmso.s309242] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2021] [Accepted: 04/28/2021] [Indexed: 11/29/2022] Open
Abstract
PURPOSE Peripheral vascular disease (PVD) is a life-threatening condition affecting the lower extremities. Common risk factors include type 2 diabetes (T2D), hypertension, dyslipidemia, smoking, and older age. There is a little-documented research on the genetic basis of the disease in Taiwan. We examined the impact of T2D and the blood pressure-associated rs17367504 variant of the Methylenetetrahydrofolate reductase (MTHFR) gene on PVD risk. MATERIALS AND METHODS In this population-based association study, we linked data from 8992 participants in Taiwan Biobank (TWB) to their medical records in the National Health Insurance Research Database (NHIRD). Participants were 30 to 70 years old at recruitment and included those assessed between 2008 and 2015. We tested for association of PVD with rs17367504 and T2D using multiple logistic regression models. The rs17367504 variant was assessed using the Axiom-Taiwan Biobank Array Plate (TWB chip: Affymetrix, Inc., Santa Clara, CA, USA). RESULTS Among cases with T2D (n = 1294), 158 (12.21%) were identified with PVD. T2D was associated with PVD (odds ratio [OR], 1.52; 95% confidence interval [CI], 1.21-1.91; p<0.001) whereas rs17367504 variant was not (OR, 0.96; CI, 0.76-1.21; p = 0.728 in AG/GG compared to AA homozygotes). However, T2D and rs17367504 had an interactive effect on PVD (p for interaction = 0.0076). Results from our stratified analyses displayed OR of 1.75 (CI, 1.35-2.26; p<0.001) in AA individuals with DM and 0.94 (CI, 0.56-1.58; p = 0.811) in AG+GG individuals with T2D. Using the AA genotype and no T2D as the reference group, the respective OR of PVD was 1.77 (CI, 1.38-2.28; p<0.001) in AA individuals with T2D; 1.18 (CI, 0.91-1.55; p = 0.215) in AG+GG individuals with no T2D, and 1.03 (CI, 0.66-1.60; p = 0.892) in AG+GG individuals with T2D . CONCLUSION We found that type 2 diabetes was associated with increased risk of peripheral vascular disease, particularly in AA genotype carriers of the rs17367504 variant in Taiwan.
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Affiliation(s)
- Yin-Tso Liu
- Institute of Medicine, Chung Shan Medical University, Taichung, 40201, Taiwan
- Department of Cardiovascular Surgery, Asia University Hospital, Taichung, 40201, Taiwan
| | - Chuan-Chao Lin
- Department of Physical Medicine and Rehabilitation, Chung Shan Medical University Hospital, Taichung, 40201, Taiwan
- School of Medicine, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Lee Wang
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Oswald Ndi Nfor
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Shu-Yi Hsu
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Chia-Chi Lung
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
| | - Disline Manli Tantoh
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
- Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung City, 40201, Taiwan
| | - Horng-Rong Chang
- Institute of Medicine, Chung Shan Medical University, Taichung, 40201, Taiwan
- Division of Nephrology, Department of Internal Medicine, Chung Shan Medical University Hospital, Taichung, 40201, Taiwan
- Horng-Rong Chang Division of Nephrology, Department of Internal Medicine, Chung Shan Medical University Hospital, No. 110 Sec. 1 Jianguo N. Road, Taichung, TaiwanTel +886-4-24739595 ext 34711 or 34704Fax +886-4-24739220 Email
| | - Yung-Po Liaw
- Department of Public Health and Institute of Public Health, Chung Shan Medical University, Taichung, 40201, Taiwan
- Department of Medical Imaging, Chung Shan Medical University Hospital, Taichung City, 40201, Taiwan
- Correspondence: Yung-Po Liaw Department of Public Health and Institute of Public Health, Chung Shan Medical University, No. 110 Sec. 1 Jianguo N. Road, Taichung City, 40201, TaiwanTel +886424730022 ext. 11838Fax +886423248179 Email
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Gogu AE, Jianu DC, Dumitrascu V, Ples H, Stroe AZ, Docu Axelerad D, Docu Axelerad A. MTHFR Gene Polymorphisms and Cardiovascular Risk Factors, Clinical-Imagistic Features and Outcome in Cerebral Venous Sinus Thrombosis. Brain Sci 2020; 11:E23. [PMID: 33375456 PMCID: PMC7824001 DOI: 10.3390/brainsci11010023] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2020] [Revised: 12/20/2020] [Accepted: 12/24/2020] [Indexed: 12/12/2022] Open
Abstract
Cerebral venous sinus thrombosis (CVST) as a severe neurological emergency, is represented by variable conditions in its clinic presentation, onset, risk factors, neuroimagistic features and outcome. The genetic polymorphism of the methylenetetrahydrofolate reductase (MTHFR) gene C677T and A1298C was associated with CVST. We aimed to characterize the prevalence of MTHFR gene polymorphisms associated with cardiovascular risk factors in the group of patients with CVST. Also, we studied additional causes associated with CVST including local infections, general infections, obstetric causes (pregnancy, puerperium) and head injury. This is a retrospective study including 114 patients which referred to our hospital between February 2012-February 2020. The protocol included demographic (age, sex), clinical, neuroimagistic features, paraclinic (genetic polymorphism of MTHFR, factor V G1691A-Leiden, prothrombin G20210A, PAI-1 675 4G/5G; Homocysteine level, the lipid profile, blood glucose and Glycohemoglobin HbA1c, high- sensitive C- reactive protein- hsCRP) data, as well as treatment and outcome. The mean age was 37.55 years with a female predominance (65.79%). In the first group of patients with inherited thrombophilia (60 cases; 52.63%) we found genetic mutation includes MTHFR C677T (38.59%) and A1298C (14.03%), factor V G1691A- Leiden (15.78%), prothrombin G20210A (2.63%), PAI-1 675 4G/5G (42.98%), and hyperhomocysteinemia (35.08%). At the second group with other etiology of CVST, except thrombophilia, we included 54 patients (47.36%). The most common sites of thrombosis were the superior sagittal sinus (52.63%). Headache was the most common symptom (91.22%) and seizures were the main clinical presentation (54.38%). The MTHFR polymorphism was significantly correlated with higher total cholesterol (TC) (p = 0.023), low- density lipoprotein cholesterol (LDL) (p = 0.008), homocysteine level (tHcy) (p < 0.001). Inside the first group with MTHFR polymorphism we have found a significant difference between the levels of homocysteine at the patients with MTHFR C677T versus MTHFR A1298C polymorphism (p < 0.001). The high-sensitive C-reactive protein (hsCRP) was increased in both groups of patients, but the level was much higher in the second group (p = 0.046). Mortality rate was of 2.63%. Demographic, clinical and neuroimagistic presentation of CVST in our study was similar with other studies on the matter, with a high frequency of thrombophilia causes. MTHFR gene polymorphisms (C677T and A1298C) are increased in prevalence in CVST. PAI-1 675 4G/5G gene mutation seems to be involved in CVST etiology. Plasma C-reactive protein level and hyperhomocysteinemia should be considered as a prognostic factor in CVST.
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Affiliation(s)
- Anca Elena Gogu
- Department of Neurology, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania; (A.E.G.); (D.C.J.)
| | - Dragos Catalin Jianu
- Department of Neurology, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania; (A.E.G.); (D.C.J.)
| | - Victor Dumitrascu
- Department of Pharmacology, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania;
| | - Horia Ples
- Department of Neurosurgery, University of Medicine and Pharmacy “Victor Babes”, 300041 Timisoara, Romania;
| | - Alina Zorina Stroe
- Department of Neurology, General Medicine Faculty, “Ovidius” University, 900470 Constanta, Romania;
| | - Daniel Docu Axelerad
- Department of Sport, Faculty of Physical Education and Sport, “Ovidius” University, 900470 Constanta, Romania;
| | - Any Docu Axelerad
- Department of Neurology, General Medicine Faculty, “Ovidius” University, 900470 Constanta, Romania;
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Hou J, Zhong Z, Deng Q, Lin L, Zeng X. The role of MTHFR C677T and ALDH2 Glu504Lys polymorphism in acute coronary syndrome in a Hakka population in southern China. BMC Cardiovasc Disord 2020; 20:127. [PMID: 32160861 PMCID: PMC7066809 DOI: 10.1186/s12872-020-01410-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 03/02/2020] [Indexed: 01/12/2023] Open
Abstract
Background Acute coronary syndrome (ACS) is the most serious type of coronary heart disease and is a global medical burden. The pathogenesis of ACS is very complex and still poorly understood. Epidemiologic studies have revealed that the manifestation of ACS are the results of the interactions between multiple environmental and genetic factors. The present study aimed to investigate the role of polymorphisms of MTHFR C677T and ALDH2 Glu504Lys as risk factors for ACS in a Hakka population in southern China. Methods Between September 1, 2015 and October 31, 2017, a total of 1957 individuals, including 860 ACS patients and 1097 controls were recruited. Blood samples were collected and genotypes were determined by DNA microarray chip method and direct sequencing method. Results For the MTHFR C677T polymorphism, frequencies of CC, CT, and TT genotypes were 53.60% versus 55.33, 39.53% versus 38.65 and 6.86% versus 6.02% in patients with ACS versus controls, respectively(p > 0.05). The differences in genotype frequencies between the ACS patients and controls in the three genetic model were not statistically significant. For the ALDH2 Glu504Lys polymorphism, the frequencies of ALDH2*1*1, ALDH2*1*2, and ALDH2*2*2 genotypes were 48.72, 42.67 and 8.6% in the ACS patients, respectively, while these were 53.33, 39.11 and 7.57% in the controls, respectively, showing no significant difference in the distribution of the ALDH2 genotype between the groups. Using the wild genotype ALDH2*1*1 as reference, relative risk analysis revealed a slightly increased risk for ACS in individuals with the ALDH2*1*2 plus ALDH2*2*2 genotypes (odds ratio (OR) = 1.203, 95% confidence interval (CI) = 1.006–1.438, p = 0.043). In a multivariate logistic regression model, even after adjusting for potential covariates, the association between ALDH2 *2 allele and ACS remained significant (OR = 1.242, 95% CI = 1.045–1.561, p = 0.038). Conclusions We present findings regarding the possible clinical impact of the ALDH2*2 variant on ACS patients in a Hakka population in southern China and our findings might help to stratify the high-risk ACS patients and implement appropriate strategies for this genetic subpopulation to ultimately guide the precision preventive procedures in the future.
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Affiliation(s)
- Jingyuan Hou
- Clinical Core Laboratory, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, No. 63 Huangtang Road, Meijiang District, Meizhou, 514031, People's Republic of China. .,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, 514031, People's Republic of China. .,Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, 514031, People's Republic of China.
| | - Zhixiong Zhong
- Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, 514031, People's Republic of China.,Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, 514031, People's Republic of China.,Center for Cardiovascular Diseases, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, Meizhou, 514031, People's Republic of China
| | - Qiaoting Deng
- Clinical Core Laboratory, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, No. 63 Huangtang Road, Meijiang District, Meizhou, 514031, People's Republic of China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, 514031, People's Republic of China.,Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, 514031, People's Republic of China
| | - Lifang Lin
- Clinical Core Laboratory, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, No. 63 Huangtang Road, Meijiang District, Meizhou, 514031, People's Republic of China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, 514031, People's Republic of China.,Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, 514031, People's Republic of China
| | - Xing Zeng
- Clinical Core Laboratory, Meizhou People's Hospital (Huangtang Hospital), Meizhou Hospital Affiliated to Sun Yat-sen University, No. 63 Huangtang Road, Meijiang District, Meizhou, 514031, People's Republic of China.,Guangdong Provincial Key Laboratory of Precision Medicine and Clinical Translational Research of Hakka Population, Meizhou, 514031, People's Republic of China.,Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, 514031, People's Republic of China
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Long Y, Zhao XT, Liu C, Sun YY, Ma YT, Liu XY, Liu JX. A Case-Control Study of the Association of the Polymorphisms of MTHFR and APOE with Risk Factors and the Severity of Coronary Artery Disease. Cardiology 2019; 142:149-157. [PMID: 31163415 DOI: 10.1159/000499866] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Accepted: 03/21/2019] [Indexed: 11/19/2022]
Abstract
OBJECTIVES To explore the association between single-nucleotide polymorphisms (SNPs) in MTHFR and APOE and the risk of CAD and, more importantly, the severity of CAD and the profile of serum lipids, we performed a case-control study in a Chinese Han population. METHODS A total of 1,207 cases of consecutive CAD-suspected inpatients were recruited, and 406 CAD cases and 231 non-CAD controls were enrolled for the final analysis after screening for exclusion criteria. All subjects had undergone coronary angiography, and the severity of CAD was evaluated by 2 cardiologists according to the Gensini scores. The genotypes of MTHFR and APOEwere detected using real-time PCR, and then verified by Sanger sequencing. Environmental risk factors, such as age, sex, smoking, alcohol consumption, hypertension, diabetes, dyslipidemia, and BMI were collected. Statistical analyses (the χ2 test, binary logistic regression analysis, and ordinal polytomous logistic regression analysis) were performed with SPSS v16.0. RESULTS The genotypes ofall the subjects included in the CAD and non-CAD groups in this study were successfully detected, with an agreement of 100% with Sanger sequencing. The distributions of genotypes CT and TT at MTHFR C667T were higher in CAD cases than in non-CAD controls (OR 1.99, 95% CI 1.34-2.95; OR 1.77, 95% CI 1.18-2.67; p < 0.05), whereas genotype AC at MTHFR A1298Cwas lower in CAD cases (OR 0.71, 95% CI 0.50-1.02; p < 0.05). A significant association was observed in genotypes CT and TT at MTHFR C667T and the risk of CAD (OR 1.44, 95% CI 1.27-3.67; OR 1.56, 95% CI 0.88-2.78; p < 0.05). Both genotypes and alleles of APOE were comparable in the CAD cases and non-CAD controls (p > 0.05). The genotype TT at MTHFR C667T and ε4+ at APOE were more likely to be found in the CAD subgroup with a Gensini score ≥72 (p = 0.040 and p = 0.028, respectively). Meanwhile, in the patients with genotype TT,a higher level of serum Hcy was detected, while genotype ε4+ patients possessed higher levels of serum apolipoprotein E (ApoE) and low-density lipoprotein cholesterol (LDL-C) than other genotypes. CONCLUSION This study revealed that the SNP site of MTHFR C667Tis associatedwith the risk of CAD in this Chinese Han population. In addition, the genotypes of TT in MTHFR C667T and ε4+in APOE may increase the severity of CAD, and higher Hcy, LDL-C, and ApoE levels may be involved in this pathogenic process.
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Affiliation(s)
- Yan Long
- Department of Laboratory of Molecular Biology, Peking University People's Hospital, Beijing, China, .,Peking University Health Science Center, Beijing, China,
| | - Xiao-Tao Zhao
- Department of Laboratory of Molecular Biology, Peking University People's Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Chang Liu
- Department of Laboratory of Molecular Biology, Peking University People's Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Yuan-Yuan Sun
- Department of Laboratory of Molecular Biology, Peking University People's Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Yin-Ting Ma
- Department of Laboratory of Molecular Biology, Peking University People's Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Xin-Yu Liu
- Cardiology Department, Peking University People's Hospital, Beijing, China.,Peking University Health Science Center, Beijing, China
| | - Ji-Xuan Liu
- Cardiology Department, Chinese PLA General Hospital, Beijing, China.,Medical School of Chinese PLA, Beijing, China
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Kumar M, Goudihalli S, Mukherjee K, Dhandapani S, Sandhir R. Methylenetetrahydrofolate reductase C677T variant and hyperhomocysteinemia in subarachnoid hemorrhage patients from India. Metab Brain Dis 2018; 33:1617-1624. [PMID: 29926428 DOI: 10.1007/s11011-018-0268-5] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Accepted: 06/06/2018] [Indexed: 12/19/2022]
Abstract
Methylenetetrahydrofolate reductase (MTHFR) polymorphism (C677T, A1298C) has been implicated in increased plasma homocysteine (Hcy) levels. The present study was designed to investigate the association between MTHFR polymorphism and increased Hcy levels in subarachnoid haemorrhage (SAH) patients. A total of 150 subjects from North India were included in the study, comprising of 100 SAH patients and 50 healthy controls. Plasma Hcy levels was determined and MTHFR polymorphism (C677T, A1298C) was screened by High resolution melting (HRM) analysis. Plasma Hcy levels were found to be significantly higher (p < 0.001) in SAH patients than in healthy controls. No significant difference in the genotype and allele frequency of MTHFR A1298C was observed. However, frequency of MTHFR C677T genotype, CT (53% vs. 20%; p < 0.001) and TT (15% vs. 2%; p < 0.05) was significantly higher in SAH group as compared to healthy controls. The frequency of T allele (41.5% vs. 12%; p < 0.001) was also found to be higher in SAH patients in comparison to healthy controls. Furthermore, Hcy levels were higher in SAH patients with TT genotype than in patients having CT genotype, whereas CC genotype had lower Hcy levels. The study suggests that higher frequency of MTHFR C677T allele may contribute to etiopathology of SAH through increase in Hcy levels.
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Affiliation(s)
- Mohit Kumar
- Department of Biochemistry, Basic Medical Sciences Block-II, Panjab University, Sector-25, Chandigarh, 160014, India
| | - Sachin Goudihalli
- Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Kanchan Mukherjee
- Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Sivashanmugam Dhandapani
- Department of Neurosurgery, Post Graduate Institute of Medical Education and Research, Chandigarh, 160012, India
| | - Rajat Sandhir
- Department of Biochemistry, Basic Medical Sciences Block-II, Panjab University, Sector-25, Chandigarh, 160014, India.
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Attar M, Shirangi S, Shateri F, Shahbazi M. Common variant of 5,10-methylenetetrahydrofolate reductase may increase risk of coronary artery disease in the Iranian population. EGYPTIAN JOURNAL OF MEDICAL HUMAN GENETICS 2018. [DOI: 10.1016/j.ejmhg.2017.11.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022] Open
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Raina JK, Sharma M, Panjaliya RK, Bhagat M, Sharma R, Bakaya A, Kumar P. Methylenetetrahydrofolate reductase C677T and methionine synthase A2756G gene polymorphisms and associated risk of cardiovascular diseases: A study from Jammu region. Indian Heart J 2016; 68:421-30. [PMID: 27316508 PMCID: PMC4912384 DOI: 10.1016/j.ihj.2016.02.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Revised: 01/12/2016] [Accepted: 02/07/2016] [Indexed: 02/07/2023] Open
Abstract
Aim Potent risk factors at both genetic and non-genetic levels are accountable for susceptibility and instigation of different cardiovascular phenotypes. Recently, homocysteine is being identified as an important predictor for cardiovascular diseases. Homocysteine remethylation plays a key role in the synthesis of methionine and S-adenosine methionine. Methylenetetrahydrofolate reductase (MTHFR) and methionine synthase (MTR) genes are known to regulate the homocysteine remethylation reaction and higher homocysteine level is significantly associated with diverse cardiovascular phenotypes. In this context, we aimed to carry out a study on the association of MTHFR (C677T) and MTR (A2756G) gene polymorphism with CVD in population of Jammu region of J&K state. Materials and methods A total of 435 individuals were enrolled (195 CVD patients and 240 controls) for the case–control study. Genotyping of MTHFR C677T and MTR A2756G gene polymorphism was done by PCR-RFLP technique. Biochemical parameters were estimated by biochemical analyser. Results Metabolic variables such as serum LDL-C, TC and TG were significantly higher in patients (p < 0.0001), whereas serum HDL-C was higher in controls. Majority of the patients were having history of hypertension (57.44%; p < 0.0001) as a concomitant condition. The evaluation of genetic association showed that, MTHFR C6877T (OR: 8.89, 95% CI: 2.01–39.40) and MTR A2756G (OR: 1.48, 95% CI: 1.09–2.00) polymorphisms associated with higher risk of CVD. Conclusion The present study reveals significant differences in nongenetic variables among patients and control as well as association of gene polymorphisms with CVD risk.
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Affiliation(s)
- Jyotdeep K Raina
- Human Genetics Research cum Counselling Centre, University of Jammu, 180006, India
| | - Minakashee Sharma
- Human Genetics Research cum Counselling Centre, University of Jammu, 180006, India
| | - Rakesh K Panjaliya
- Human Genetics Research cum Counselling Centre, University of Jammu, 180006, India
| | | | - Ravi Sharma
- Human Genetics Research cum Counselling Centre, University of Jammu, 180006, India; Department of Zoology, University of Jammu, India
| | - Ashok Bakaya
- Department of Cardiology, Acharaya Shri Chander College of Medical Sciences and Hospital (ASCOMS), Sidhra, Jammu, India
| | - Parvinder Kumar
- Principal Investigator, Human Genetics Research cum Counselling Centre, University of Jammu, 180006, India; Assistant Professor, Department of Zoology, University of Jammu, India.
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Sarecka-Hujar B, Zak I, Krauze J. The TT Genotype of the MTHFR 677C>T Polymorphism Increases Susceptibility to Premature Coronary Artery Disease in Interaction with Some of the Traditional Risk Factors. ACTA MEDICA (HRADEC KRÁLOVÉ) 2015; 55:172-9. [DOI: 10.14712/18059694.2015.42] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Background: The presence of several risk factors (genetic and non-genetic) has greater impact on the risk of premature coronary artery disease (CAD) than single risk factor. Objective: The aim of the study was to establish possible relations between genotypes and alleles of 677C>T polymorphism ofMTHFRgene and some traditional risk factors e.g. elevated levels of lipid parameters and smoking in development of premature CAD. Methods: The groups comprised 152 patients with angiographically documented premature CAD (aged 42.9 ± 5.5) and 121 age-matched blood donors (aged 42.3 ± 6.5) were studied. TheMTHFR677C>T polymorphism was genotyped with Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) method. Results: Patients with TT genotype who simultaneously smoked had increased risk of premature CAD compared to non-smoking cases with CC genotype (OR = 24.62). We also found that individuals with TT genotype and elevated LDL-cholesterol (LDL-chol.) level had significantly higher risk of CAD (OR = 9.92) than individuals with normal LDL-chol. level and CC genotype. Conclusions: The present study shows that simultaneous presence ofMTHFRTT genotype and smoking or elevated levels of LDL-chol. influences the risk of premature CAD. This findings give interesting contribution to gene-environment interaction problem that may have clinical implications in the future.
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Chen NY, Liu CW, Du LL, Xiao LP, Ge L, Wang YY, Wei Z, Wu HY, Luo CY, Liang L, Peng JH, Luo XQ, Yin RX, Nguyen CP, Pan SL. Enrichment of MTHFR 677 T in a Chinese long-lived cohort and its association with lipid modulation. Lipids Health Dis 2014; 13:104. [PMID: 24968810 PMCID: PMC4092207 DOI: 10.1186/1476-511x-13-104] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 06/17/2014] [Indexed: 11/24/2022] Open
Abstract
Background Variants in the Methylenetetrahydrofolate reductase (MTHFR) gene may result in a lowered catalytic activity and associate with subsequent elevated serum homocysteine (Hcy) concentration, abnormal DNA synthesis and methylation, cardiovascular risk, and unhealthy aging. Several investigations on the relationship of MTHFR C677T polymorphism with serum lipid profile and longevity have been conducted in some populations, but the findings remain mixed. Herein, we sought to look at the association between MTHFR C677T and lipid profile in a longevous cohort in Bama, a well-known home of longevity in China. Methods Genotyping of MTHFR C677T was undertaken in 516 long-lived inhabitants (aged 90 and older, long-lived group, LG) and 493 healthy controls (aged 60–75, non-long-lived group, non-LG) recruited from Bama area. Correlation between MTHFR genotypes and lipids was then evaluated. Results T allele and TT genotype were significantly more prevalent in LG (P = 0.001 and 0.002, respectively), especially in females, than in non-LG. No difference in the tested lipid measures among MTHFR C677T genotypes was observed in LG, non-LG and total population (P > 0.05 for all). However, female but not male T carriers exhibited higher TC and LDL-C levels than did T noncarriers in the total population and in LG after stratification by sex (P < 0.05 for each). These differences did not however remain through further subdivision by hyperlipidemia and normolipidemia. Conclusion The higher prevalence of MTHFR 677 T genotypes and its modest unfavorable impact on lipids in Bama long-lived individuals may imply an existence of other protective genotypes which require further determination.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Shang-Ling Pan
- Department of Pathophysiology, School of Preclinical Medicine, Guangxi Medical University, Nanning 530021, Guangxi, People's Republic of China.
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Yadav S, Hasan N, Marjot T, Khan MS, Prasad K, Bentley P, Sharma P. Detailed analysis of gene polymorphisms associated with ischemic stroke in South Asians. PLoS One 2013; 8:e57305. [PMID: 23505425 PMCID: PMC3591429 DOI: 10.1371/journal.pone.0057305] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Accepted: 01/20/2013] [Indexed: 11/30/2022] Open
Abstract
The burden of stroke is disproportionately high in the South Asian subcontinent with South Asian ethnicity conferring a greater risk of ischemic stroke than European ancestry regardless of country inhabited. While genes associated with stroke in European populations have been investigated, they remain largely unknown in South Asians. We conducted a comprehensive meta-analysis of known genetic polymorphisms associated with South Asian ischemic stroke, and compared effect size of the MTHFR C677T-stroke association with effect sizes predicted from homocysteine-stroke association. Electronic databases were searched up to August 2012 for published case control studies investigating genetic polymorphisms associated with ischemic stroke in South Asians. Pooled odds ratios (OR) for each gene-disease association were calculated using a random-effects model. We identified 26 studies (approximately 2529 stroke cases and 2881 controls) interrogating 33 independent genetic polymorphisms in 22 genes. Ten studies described MTHFR C677T (108 with TT genotype and 2018 with CC genotype) -homocysteine relationship and six studies (735 stroke cases and 713 controls) described homocysteine-ischemic stroke relationship. Risk association ORs were calculated for ACE I/D (OR 5.00; 95% CI, 1.17–21.37; p = 0.03), PDE4D SNP 83 (OR 2.20; 95% CI 1.21–3.99; p = 0.01), PDE4D SNP 32 (OR 1.57; 95% CI 1.01–2.45, p = 0.045) and IL10 G1082A (OR 1.44; 95% CI, 1.09–1.91, p = 0.01). Significant association was observed between elevated plasma homocysteine levels and MTHFR/677 TT genotypes in healthy South Asians (Mean difference (ΔX) 5.18 µmol/L; 95% CI 2.03–8.34: p = 0.001). Our results demonstrate that the genetic etiology of ischemic stroke in South Asians is broadly similar to the risk conferred in Europeans, although the dataset is considerably smaller and warrants the same clinical considerations for risk profiling.
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Affiliation(s)
- Sunaina Yadav
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Nazeeha Hasan
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Thomas Marjot
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Muhammad S. Khan
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Kameshwar Prasad
- Department of Neurology, All India Institute of Medical Sciences, New Delhi, India
| | - Paul Bentley
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
| | - Pankaj Sharma
- Imperial College Cerebrovascular Research Unit (ICCRU), Imperial College London, London, United Kingdom
- * E-mail:
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Moritz AI, de Moura JR, Persuhn DC. Frequency of MTHFR G1793A polymorphism in individuals with early coronary artery disease: cross-sectional study. SAO PAULO MED J 2013; 131:296-300. [PMID: 24310797 PMCID: PMC10876330 DOI: 10.1590/1516-3180.2013.1315500] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/17/2012] [Accepted: 12/07/2012] [Indexed: 01/05/2023] Open
Abstract
CONTEXT AND OBJECTIVE Atherosclerotic disease is the leading cause of death in Brazil. It is a complex disease and its prevention involves identification and control of risk factors. Moderately increased plasma homocysteine concentration (hyperhomocysteinemia) has been considered to be a risk factor for several vascular diseases. Mutations in the methylenetetrahydrofolate reductase (MTHFR) enzyme, which is involved in homocysteine metabolism, have been investigated as potential vascular disease risk factors. G1793A polymorphism was described in 2002 and there are few studies analyzing its involvement in diseases. The objective of this study was to investigate the prevalence of G1793A polymorphism in subjects with early coronary artery disease (CAD). DESIGN AND SETTING Cross-sectional study with control group conducted at a private cardiology clinic and a molecular biology laboratory (Universidade do Vale do Itajaí). METHODS We studied 74 early-onset CAD+ patients and 40 CAD- individuals with normal angiography results. DNA was extracted from blood samples. Molecular data were obtained via PCR/RFLP and agarose gel electrophoresis. RESULTS The occurrence of G1793A heterozygotes was similar in the control (5%) and test (6.25%) groups, thus showing that in the population studied there was no correlation between the marker and occurrences of early CAD. There was also no association between the polymorphism and the risk factors for atherosclerosis. CONCLUSIONS The frequency of the 1793A allele in the test group (3.4%) was similar to what was found in the control individuals (2.5%). There was no correlation between G1793A polymorphism and occurrences of early CAD in this population.
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Affiliation(s)
| | | | - Darlene Camati Persuhn
- PhD. Biochemist and Assistant Professor I, Department of Molecular Biology, Universidade Federal da Paraíba, João Pessoa, Paraíba, Brazil.
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