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Wu DF, Yin RX, Deng JL. Homocysteine, hyperhomocysteinemia, and H-type hypertension. Eur J Prev Cardiol 2024; 31:1092-1103. [PMID: 38236144 DOI: 10.1093/eurjpc/zwae022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/10/2024] [Accepted: 01/13/2024] [Indexed: 01/19/2024]
Abstract
Homocysteine (Hcy) is a sulphur-containing nonessential amino acid derived from the intermediate metabolites of methionine. Methionine is obtained from dietary proteins, such as poultry, meat, eggs, seafood, and dairy products. Abnormalities in Hcy metabolic pathways, deficiencies in dietary methionine, folate, and vitamins B12, B6, and B2 and genetic defects, polymorphisms, or mutations in Hcy metabolism-related enzymes may lead to an increase in plasma Hcy levels. Generally, a plasma Hcy level higher than 10 or 15 μmol/L has been defined as hyperhomocysteinemia (HHcy). An individual with essential hypertension complicated with HHcy is considered to have H-type hypertension (HTH). Currently, HHcy is considered a novel independent risk factor for various cardiovascular diseases. To provide a useful reference for clinicians, the research progress on Hcy, HHcy, and HTH in recent years was systematically reviewed here, with a focus on the source and metabolic pathways of Hcy, plasma Hcy levels and influencing factors, detection methods for plasma Hcy levels, relationship between Hcy concentration and hypertension, pathogenesis of HTH, cardiovascular complications of HTH, and treatment of HTH.
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Affiliation(s)
- Dong-Feng Wu
- Department of Geriatric Cardiology, Guangxi Academy of Medical Sciences and the People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Nanning 530021, Guangxi, People's Republic of China
| | - Rui-Xing Yin
- Department of Cardiology, Institute of Cardiovascular Diseases, The First Affiliated Hospital, Guangxi Medical University, 6 Shuangyong Road, Nanning 530021, Guangxi, People's Republic of China
| | - Jin-Long Deng
- Department of Geriatric Cardiology, Guangxi Academy of Medical Sciences and the People's Hospital of Guangxi Zhuang Autonomous Region, 6 Taoyuan Road, Nanning 530021, Guangxi, People's Republic of China
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Choi CK, Kweon SS, Lee YH, Nam HS, Choi SW, Kim HY, Shin MH. Association Between Plasma Homocysteine Level and Mortality: A Mendelian Randomization Study. Korean Circ J 2023; 53:710-719. [PMID: 37559417 PMCID: PMC10625855 DOI: 10.4070/kcj.2023.0089] [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: 04/06/2023] [Revised: 05/23/2023] [Accepted: 06/13/2023] [Indexed: 08/11/2023] Open
Abstract
BACKGROUND AND OBJECTIVES In previous studies, high homocysteine levels were associated with high cardiovascular mortality. However, these results were inconsistent with those of randomized controlled trials. We aimed to evaluate the causal role of homocysteine on all-cause and cardiovascular mortality using Mendelian randomization (MR) analysis. METHODS This study included the 10,005 participants in the Namwon Study. In conventional observational analysis, age, sex, survey years, lifestyles, body mass index, comorbidities, and serum folate level were adjusted using multivariate Cox proportional regression. MR using 2-stage least squares regression was used to evaluate the association between genetically predicted plasma homocysteine levels and mortality. Age, sex, and survey years were adjusted for each stage. The methylenetetrahydrofolate reductase (MTHFR) polymorphism was used as an instrumental variable for predicting plasma homocysteine levels. RESULTS Observed homocysteine levels were positively associated with all-cause (hazard ratio [HR], 1.40; 95% confidence interval [CI], 1.26-1.54) and cardiovascular (HR, 1.62; 95% CI, 1.28-2.06) mortality when plasma homocysteine levels doubled. However, these associations were not significant in MR analysis. The HRs of doubling genetically predicted plasma homocysteine levels for all-cause and cardiovascular mortality were 0.99 (95% CI, 0.62-1.57) and 1.76 (95% CI, 0.54-5.77), respectively. CONCLUSIONS This MR analysis did not support a causal role for elevated plasma homocysteine concentrations in premature deaths.
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Affiliation(s)
- Chang Kyun Choi
- Division of Cancer Registration and Surveillance, National Cancer Control Institute, National Cancer Center, Goyang, Korea
| | - Sun-Seog Kweon
- Department of Preventive Medicine, Chonnam National University Medical School, Hwasun, Korea
| | - Young-Hoon Lee
- Department of Preventive Medicine & Institute of Wonkwang Medical Science, Wonkwang University College of Medicine, Iksan, Korea
| | - Hae-Sung Nam
- Department of Preventive Medicine, Chungnam National University School of Medicine, Daejeon, Korea
| | - Seong-Woo Choi
- Department of Preventive Medicine, Chosun University College of Medicine, Gwangju, Korea
| | - Hye-Yeon Kim
- Department of Preventive Medicine, Chonnam National University Medical School, Hwasun, Korea.
| | - Min-Ho Shin
- Department of Preventive Medicine, Chonnam National University Medical School, Hwasun, Korea
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Wang X, Chen Z, Tian W, Zhang J, Li Q, Ju J, Xu H, Chen K. Plasma homocysteine levels and risk of congestive heart failure or cardiomyopathy: A Mendelian randomization study. Front Cardiovasc Med 2023; 10:1030257. [PMID: 36776266 PMCID: PMC9908956 DOI: 10.3389/fcvm.2023.1030257] [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: 08/30/2022] [Accepted: 01/09/2023] [Indexed: 01/27/2023] Open
Abstract
Background Although observational studies have demonstrated associations between elevated plasma homocysteine levels and the risk of cardiovascular diseases, controversy remains. Objective This study investigated the causal association of plasma homocysteine levels with congestive heart failure and cardiomyopathy risk. Methods We performed a two-sample Mendelian randomization (MR) study of congestive heart failure (n = 218,792), cardiomyopathy (n = 159,811), and non-ischemic cardiomyopathy (n = 187,152). Genetic summary data on the association of single-nucleotide polymorphisms with homocysteine were extracted from the most extensive genome-wide association study of 44,147 individuals. MR analyses, including the random-effect inverse variance-weighted (IVW) meta-analysis, weighted median, simple median, maximum likelihood, penalized weighted median, MR-PRESSO, and MR-Egger regression, were used to estimate the associations between the selected single-nucleotide polymorphisms and congestive heart failure or cardiomyopathy. Results The MR analyses revealed no causal role of higher genetically predicted plasma homocysteine levels with congestive heart failure risk (random-effect IVW, odds ratio [OR] per standard deviation (SD) increase in homocysteine levels = 1.753, 95% confidence interval [CI] = 0.674-4.562, P = 0.250), cardiomyopathy (random-effect IVW, OR per SD increase in homocysteine levels = 0.805, 95% CI = 0.583 to 1.020, P = 0.189), or non-ischemic cardiomyopathy (random-effect IVW, OR per SD increase in homocysteine levels = 1.064, 95% CI = 0.927-1.222, P = 0.379). The results were consistent with other analytical methods and sensitivity analyses. Conclusion Genetically predicted homocysteine level was not associated with congestive heart failure or cardiomyopathy risk. It is unlikely that homocysteine-lowering therapy decreases the incidence or improves the outcomes of congestive heart failure and cardiomyopathy.
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Affiliation(s)
- Xinyi Wang
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Zhuo Chen
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Wende Tian
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Jie Zhang
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Qiuyi Li
- Graduate School, Beijing University of Chinese Medicine, Beijing, China
| | - Jianqing Ju
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hao Xu
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,*Correspondence: Hao Xu,
| | - Keji Chen
- National Clinical Research Center for Chinese Medicine Cardiology, Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China,Keji Chen,
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Khan MS, Saeedullah A, Andrews SC, Iqbal K, Qadir SA, Shahzad B, Ahmed Z, Shahzad M. Adolescent Afghan Refugees Display a High Prevalence of Hyperhomocysteinemia and Associated Micronutrients Deficiencies Indicating an Enhanced Risk of Cardiovascular Disease in Later Life. Nutrients 2022; 14:1751. [PMID: 35565715 PMCID: PMC9105069 DOI: 10.3390/nu14091751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 04/12/2022] [Accepted: 04/20/2022] [Indexed: 01/27/2023] Open
Abstract
A growing body of research evidence suggests that elevated homocysteine level (hyperhomocysteinemia) is an independent risk factor for cardiovascular diseases. The current study aimed to investigate the prevalence and associated risk factors for hyperhomocysteinemia among adolescent Afghan refugees aged 10−19 years. In total, 206 healthy adolescent boys and girls were randomly recruited from a refugee village in Peshawar, Pakistan, in 2020. Socio-demographic data, anthropometric assessment, and blood sample collection were performed following standard methods. Serum homocysteine was assessed using a chemiluminescent microparticle immunoassay, with hyperhomocysteinemia defined as levels ≥ 15 µmol/L. The overall prevalence of hyperhomocysteinemia was 25%, with mean homocysteine levels significantly (p = 0.004) higher among boys (14.1 µmol/L) than girls (11.8 µmol/L). Multivariate logistic regression analysis revealed a significant association between hyperhomocysteineimia and serum levels of vitamin B12 (OR 0.29; 95% CI of 0.14 to 0.62; p < 0.01) and folate (OR 0.1; 95% CI of 0.03 to 0.27; p < 0.001). Overall, our study findings indicate high prevalence of hyperhomocysteinemia among adolescent Afghan refugees who are potentially at high risk of developing cardiovascular diseases in future. There is a dire need to develop and implement nutritional and public health strategies to control hyperhomocysteinemia, protect against related diseases and complications in future, and ensure healthy lives and well-being among these vulnerable populations.
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Affiliation(s)
- Muhammad Shabir Khan
- Institute of Basic Medical Sciences, Khyber Medical University, Hayat Abad Phase 5, Peshawar 25120, Pakistan; (M.S.K.); (K.I.); (S.A.Q.); (B.S.)
| | - Anum Saeedullah
- Department of Biochemistry, Kabir Medical College, Gandhara University, Canal Road University Town, Peshawar 25000, Pakistan;
| | - Simon C. Andrews
- School of Biological Sciences, Health and Life Sciences Building, University of Reading, Reading RG6 6AX, UK
| | - Khalid Iqbal
- Institute of Basic Medical Sciences, Khyber Medical University, Hayat Abad Phase 5, Peshawar 25120, Pakistan; (M.S.K.); (K.I.); (S.A.Q.); (B.S.)
| | - Syed Abdul Qadir
- Institute of Basic Medical Sciences, Khyber Medical University, Hayat Abad Phase 5, Peshawar 25120, Pakistan; (M.S.K.); (K.I.); (S.A.Q.); (B.S.)
| | - Babar Shahzad
- Institute of Basic Medical Sciences, Khyber Medical University, Hayat Abad Phase 5, Peshawar 25120, Pakistan; (M.S.K.); (K.I.); (S.A.Q.); (B.S.)
| | - Zahoor Ahmed
- Department of Biochemistry, Khyber Medical College, Peshawar 25120, Pakistan;
| | - Muhammad Shahzad
- Institute of Basic Medical Sciences, Khyber Medical University, Hayat Abad Phase 5, Peshawar 25120, Pakistan; (M.S.K.); (K.I.); (S.A.Q.); (B.S.)
- School of Biological Sciences, Health and Life Sciences Building, University of Reading, Reading RG6 6AX, UK
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Kjaergaard AD, Wu Y, Ming WK, Wang Z, Kjaergaard MN, Ellervik C. Homocysteine and female fertility, pregnancy loss and offspring birthweight: a two-sample Mendelian randomization study. Eur J Clin Nutr 2022; 76:40-47. [PMID: 33772217 DOI: 10.1038/s41430-021-00898-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Revised: 02/15/2021] [Accepted: 03/02/2021] [Indexed: 11/08/2022]
Abstract
BACKGROUND/OBJECTIVES Observational studies link elevated homocysteine concentrations (Hcy) with female fertility, pregnancy loss, and low offspring birthweight. Maternal rs1801133, a functional variant in MTHFR strongly associated with lifelong elevated Hcy, is associated with recurrent pregnancy loss and offspring birthweight in Asian women. We investigated if genetically elevated Hcy is associated with fertility, pregnancy loss, and offspring birthweight in European women. SUBJECTS/METHODS We performed a two-sample Mendelian randomization (MR) study using publicly available data. We obtained 18 genetic variants (five involved in Hcy metabolism) explaining up to 5.9% of the variance in Hcy from a genome-wide association meta-analysis of 44,147 European individuals (82% women). We investigated fertility (including age at menopause), pregnancy loss, and offspring birthweight in the UK Biobank (N = 194,174), EGG (N = 190,406), and ReproGen (N = 69,360-252,514) consortia using summary statistics. We calculated inverse-variance weighted, and several sensitivity MR regression statistics. RESULTS rs1801133 was associated with a 7.45 months (95% CI: 4.09, 10.80) increase in age at menopause and 29.69 (12.87, 46.51) g decrease in offspring birthweight per SD increase in Hcy in the UK biobank, and confirmed in EGG and ReproGen. MR for Hcy metabolism alone (five variants in MTHFR, MTR, CBS) showed similar results for offspring birthweight across consortia. However, using all 18 variants resulted in no association for any of the outcomes across consortia. CONCLUSION Hcy and suggestively vitamin B variants are most likely the drug targets for folate supplementation in pregnant women on the offspring birthweight, while Hcy variants related to renal function or diabetes are not involved.
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Affiliation(s)
- Alisa D Kjaergaard
- Steno Diabetes Center Aarhus, Aarhus University Hospital, Aarhus, Denmark.
| | - Yanxin Wu
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, MA, USA
| | - Wai-Kit Ming
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | - Zillian Wang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou, China
| | | | - Christina Ellervik
- Department of Laboratory Medicine, Boston Children's Hospital, Boston, MA, USA
- Department of Clinical Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
- Department of Pathology, Harvard Medical School, Boston, MA, USA
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Yang Y, Zeng Y, Yuan S, Xie M, Dong Y, Li J, He Q, Ye X, Lv Y, Hocher CF, Kraemer BK, Hong X, Hocher B. Prevalence and risk factors for hyperhomocysteinemia: a population-based cross-sectional study from Hunan, China. BMJ Open 2021; 11:e048575. [PMID: 34872994 PMCID: PMC8650492 DOI: 10.1136/bmjopen-2020-048575] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
OBJECTIVES Hyperhomocysteinemia is an independent risk factor for cardiovascular diseases. We aimed to investigate the prevalence and risk factors for hyperhomocysteinemia, especially modifiable lifestyle factors, such as smoking behaviour and dietary factors. DESIGN Population-based cross-sectional study. SETTING Hunan Province, China PARTICIPANTS: A total of 4012 participants completed the study, between July 2013 and March 2014. The median age is 55 (interquartile range: 45-63) years, with 1644 males (41%) and 2368 females (59%). MAIN OUTCOME MEASURES Homocysteine level were measured by the microplate enzyme immunoassay method. Hyperthomocysteinemia was defined as ≥15 µmol/L. Questionnaire was used to investigate potential risk factors of hyperhomocysteinemia. Crude odd ratio (OR) or adjusted OR with 95% CI were determined by using univariable or multivariable logistic regression models. RESULTS The prevalence of hyperhomocysteinemia is 35.4% (45.4% vs 28.5% for men, women, respectively). One-year increase in age is significantly associated with 2% higher risk of hyperhomocysteinemia (OR=1.02, 95% CI: 1.01 to 1.03). One unit increase of BMI is associated with 5% higher risk of hyperhomocysteinemia (OR=1.05, 95% CI: 1.03 to 1.07). Compared with the non-smoker, smoking participants have a 24% higher risk of hyperhomocysteinemia (OR=1.24, 95% CI: 1.006 to 1.53), while the risk for those quitting smoking are not significantly different (OR=1.14, 95% CI: 0.85 to 1.54). compared with those consuming fruit and vegetable at least once every day, those consuming less than once every day had a significantly higher risk of hyperhomocysteinemia (OR=1.29, 95% CI:1.11 to 1.50). In addition, we found there were significant sex interaction with education level or alcohol drinking on the risk of hyperhomocysteinemia (pinteraction <0.05). CONCLUSIONS Higher BMI and older age are potential risk factors for hyperhomocysteinemia. Current smoking but not quitting smoking is associated with higher risk of hyperhomocysteinemia. Fruit and vegetable consumption may have protective effect against hyperhomocysteinemia. Alcohol consumption or education level might interact to influence the risk of hyperhomocysteinemia.
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Affiliation(s)
- Yide Yang
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Yuan Zeng
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Shuqian Yuan
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Ming Xie
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Yanhui Dong
- Institute of Child and Adolescent Health, School of Public Health, Peking University Health Science Center, Beijing, Beijing, China
| | - Jian Li
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Quanyuan He
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Xiangli Ye
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Yuan Lv
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Carl-Friedrich Hocher
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology), University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany
| | - Bernhard K Kraemer
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology), University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany
| | - Xiuqin Hong
- Key Laboratory of Molecular Epidemiology of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
| | - Berthold Hocher
- Key Laboratory of Study and Discovery of Small Targeted Molecules of Hunan Province, School of Medicine, Hunan Normal University, Changsha, Hunan, China
- Fifth Department of Medicine (Nephrology/Endocrinology/Rheumatology), University Medical Centre Mannheim, University of Heidelberg, Mannheim, Germany
- Reproductive and Genetic Hospital of CITIC-Xiangya, Changsha, Hunan Province, China
- Institute of Medical Diagnostics, IMD Berlin, Berlin, Germany
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The significance of homocysteine in patients with hypertension. POSTEP HIG MED DOSW 2021. [DOI: 10.2478/ahem-2021-0002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Cardiovascular disease is the most common cause of death in developed countries. Important factors leading to ischemic heart disease and strokes are hypertension and high levels of homocysteine in blood serum. The coexistence of these two factors significantly increases the risk of these diseases and premature deaths. Many studies indicate that patients with hypertension are significantly more likely to demonstrate increased blood serum homocysteine levels than those with normal blood pressure. This may be caused by a higher incidence of overweight, high intake of salt and increased uric acid levels. It has been shown that both these factors increase the prevalence of hypertension and lead to higher homocysteine levels. However, the results of some studies indicate that arterial hypertension and homocysteinemia are causally related. It was shown, among other things, that high homocysteine levels damage the endothelium and reduce nitric oxide synthesis, which may directly lead to hypertension. Serum homocysteine levels are slightly higher in patients with white coat hypertension than they are in healthy individuals and may therefore also increase the risk of cardiovascular diseases. Several authors have also shown that the levels of homocysteine in blood serum are higher in so-called non-dippers, i.e., patients with no night-time pressure drop. The lack of a 10%–20% decrease in blood pressure at night is associated with increased cardiovascular complications. Strokes occur especially frequently in older people with arterial hypertension and hyperhomocysteinemia. The administration of B vitamins and folic acid significantly reduces serum homocysteine levels. The administration of this acid also slightly, but statistically significantly, increases the effectiveness of hypotensive drugs. Large meta-analyses meta-analysis indicate that the increased supply of folic acid in patients with hypertension significantly reduces the risk of stroke. Such management is particularly effective in patients with hypertension and hyperhomocysteinemia.
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Ren Z, Zhang J, Yu S, Zhao S, Tang J, Zheng Y, Meng W, Xu C, Zhang Y, Xu Y. Hypertension-Mediated Organ Damage Correlates With Serum Homocysteine Level in Community-Dwelling Elderly Chinese: The North Shanghai Study. Front Cardiovasc Med 2021; 8:662741. [PMID: 34041284 PMCID: PMC8141577 DOI: 10.3389/fcvm.2021.662741] [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: 02/04/2021] [Accepted: 04/13/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction: Serum homocysteine (Hcy) level is associated with cardiocerebrovascular disease. However, the relationship between Hcy and hypertension-mediated organ damage (HMOD) in non-hospitalized residents has not been elucidated. We aimed to investigate the association of HMOD with Hcy in elderly Chinese. Methods: One thousand seven hundred and forty-four community-dwelling elderly Chinese (age ≥65 years) participated in the Northern Shanghai Study from Jun. 2014 to Aug. 2015. Hyperhomocysteinemia (HHcy) was defined as serum Hcy ≥15 mmol/L, and HMOD was estimated as arterial stiffness [carotid-femoral pulse wave velocity (CF-PWV) and ankle-brachial index (ABI)], cardiac impairment [left ventricular (LV) hypertrophy and LV diastolic dysfunction], and renal dysfunction [estimated glomerular filtration rate (eGFR) and urinary albumin/creatinine ratio]. Linear and logistic regression models were built to explore the associations of HMOD with Hcy. Results: Among 1,744 participants, 632 (36.2%) were diagnosed as HHcy. HHcy group had more men (61.2 vs. 35.3%), with higher age (73.7 ± 6.7 vs. 70.4 ± 5.3 years) and BMI (24.2 ± 3.4 vs. 23.7 ± 3.5 kg/m2). Linear regression analysis showed that serum Hcy level was positively associated CF-PWV and negatively associated with ABI and eGFR. By logistic regression, HHcy was significantly associated with abnormal CF-PWV [odds ratio (OR) = 1.53, 95% confidence interval (CI) 1.08–2.16] and ABI (OR = 1.55, 95% CI 1.17–2.04), and decreased eGFR (OR = 7.09, 95% CI 4.03–12.47) after adjustment for covariates. Moreover, similar associations of serum Hcy level with CF-PWV and eGFR were observed in subgroups by gender and hypertensive state. Conclusion: HMOD, particularly renal dysfunction and arterial stiffening, was significantly and independently associated with increased serum Hcy level in the elderly Chinese. Clinical Trial Registration: [ClinicalTrial.gov], identifier [NCT02368938].
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Affiliation(s)
- Zhongyuan Ren
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.,Soochow University Medical College, Suzhou Industrial Park (SIP), Suzhou, China
| | - Jun Zhang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shikai Yu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Song Zhao
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Jiamin Tang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yixing Zheng
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Weilun Meng
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chong Xu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yi Zhang
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yawei Xu
- Department of Cardiology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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Sun X, Lu Y, Wang Z, Wang Q, Zheng L. No causal association between plasma homocysteine levels and atrial fibrillation: A Mendelian randomization study. Nutr Metab Cardiovasc Dis 2021; 31:587-591. [PMID: 33250370 DOI: 10.1016/j.numecd.2020.10.012] [Citation(s) in RCA: 2] [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: 02/28/2020] [Revised: 09/12/2020] [Accepted: 10/15/2020] [Indexed: 01/17/2023]
Abstract
BACKGROUND AND AIMS Although several studies have shown an association between plasma homocysteine (Hcy) levels and atrial fibrillation (AF), the causality remains unclear. We undertook a Mendelian randomization (MR) study to investigate the causal association between Hcy and AF. METHODS AND RESULTS Single-nucleotide polymorphisms (SNPs) which genome-wide significantly associated with plasma Hcy levels were obtained from a genome-wide meta-analysis (N = 44 147). MR analyses including the random-effect inverse variance-weighted (IVW) meta-analysis, weighted median analysis, and MR-Egger regression were used to estimate the associations between the selected SNPs and AF based on a meta-analysis of genome-wide association study for AF (N = 588 190). The MR analyses revealed no causal role of genetically elevated plasma Hcy levels with AF risk (random-effect IVW, odds ratio per 1 SD increase in Hcy levels = 0.972, 95% confidence interval = 0.919 to 1.027, P = 0.308). The results were consistent with the weighted median method, MR-Egger and the analysis after excluding the pleiotropic SNPs. No heterogeneity and directional pleiotropy were observed in sensitivity analyses. CONCLUSION The findings suggested that plasma Hcy levels were not causally associated with AF.
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Affiliation(s)
- Xingang Sun
- Department of Cardiology and Atrial Fibrillation Center of The First Affiliated Hospital of Zhejiang University, 79 Qingchun Road, Hangzhou, Zhejiang Province, People's Republic of China
| | - Yunlong Lu
- Department of Cardiology and Atrial Fibrillation Center of The First Affiliated Hospital of Zhejiang University, 79 Qingchun Road, Hangzhou, Zhejiang Province, People's Republic of China
| | - Zhen Wang
- Department of Cardiology and Atrial Fibrillation Center of The First Affiliated Hospital of Zhejiang University, 79 Qingchun Road, Hangzhou, Zhejiang Province, People's Republic of China
| | - Qiqi Wang
- Department of Cardiology and Atrial Fibrillation Center of The First Affiliated Hospital of Zhejiang University, 79 Qingchun Road, Hangzhou, Zhejiang Province, People's Republic of China.
| | - Liangrong Zheng
- Department of Cardiology and Atrial Fibrillation Center of The First Affiliated Hospital of Zhejiang University, 79 Qingchun Road, Hangzhou, Zhejiang Province, People's Republic of China.
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Wang J, Du J, Fan R. Exploration of the risk factors of essential hypertension with hyperhomocysteinemia: A hospital-based study and nomogram analysis. Clinics (Sao Paulo) 2021; 76:e2233. [PMID: 33503187 PMCID: PMC7798116 DOI: 10.6061/clinics/2021/e2233] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/10/2020] [Indexed: 01/21/2023] Open
Abstract
OBJECTIVES To explore the risk factors of essential hypertension with hyperhomocysteinemia (H-type hypertension) and design a nomogram to predict this risk. METHODS A hospital-based study was conducted on 1,712 individuals, including 282 patients with H-type hypertension, 105 patients with simple hypertension, 645 individuals with hyperhomocysteinemia, and 680 healthy controls. Logistic regression and nomogram models were applied to evaluate the risk factors. RESULTS Logistic regression showed that advanced age, male sex, high body mass index (BMI), high total cholesterol levels, high glucose levels, and high creatinine levels were risk factors of H-type hypertension in the healthy population and were integrated into the nomogram model. Advanced age, male sex, high BMI, high total cholesterol levels, and high glucose levels were shown to be risk factors of H-type hypertension in the hyperhomocysteinemia population. Male sex and high creatinine levels were shown to be risk factors of H-type hypertension in the hypertension population. Nomogram analysis showed that the total factor score ranged from 106 to 206, and the corresponding risk rate ranged from 0.05 to 0.95. CONCLUSIONS Men are more likely to have H-type hypertension, and advanced age, high BMI, high total cholesterol levels, and high glucose levels are risk factors of H-type hypertension in healthy and hyperhomocysteinemia populations. Furthermore, high creatinine level is a risk factor of H-type hypertension in healthy and hypertension populations. Nomogram models may be used to intuitively evaluate H-type hypertension risk and provide a basis for personalized interventions.
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Affiliation(s)
- Jufang Wang
- Medical quality management office, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang 315040, China
- Physical examination center, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, 315040, China
| | - Jinman Du
- Medical quality management office, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang 315040, China
- Physical examination center, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang, 315040, China
| | - Rui Fan
- Medical quality management office, Ningbo Medical Center Lihuili Hospital, Ningbo, Zhejiang 315040, China
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11
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Association between plasma levels of homocysteine, folate, and vitamin B 12, and dietary folate intake and hypertension in a cross-sectional study. Sci Rep 2020; 10:18499. [PMID: 33116160 PMCID: PMC7595187 DOI: 10.1038/s41598-020-75267-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 10/13/2020] [Indexed: 12/12/2022] Open
Abstract
There are few studies examining the association between homocysteine (Hcy) level and the risk of hypertension with consideration for folate and vitamin B12 as related to Hcy level. We simultaneously examined the associations of plasma levels of Hcy, folate, and vitamin B12, and dietary folate intake with the prevalence of hypertension. Participants included 1046 men and 1033 women (mean age ± standard deviation: 56.0 ± 8.9 years) in the Japan Multi-Institutional Collaborative Cohort Study. Dietary folate intake was estimated using a validated food frequency questionnaire. Hypertension was defined based on measured blood pressure and use of antihypertensive medication. A total of 734 participants (35.3%) had hypertension. Multivariate-adjusted odds ratios of hypertension for the highest quartile group of Hcy were 2.36 (95% CI 1.41-3.96) in men and 1.86 (95% CI 1.11-3.11) in women, as compared with the lowest group (P for trend = 0.014 and 0.005, respectively). Dietary folate intake was not correlated with hypertension in both men and women (P for trend = 0.099 and 0.703, respectively). Plasma vitamin B12 was positively associated with hypertension only in women (P for trend = 0.027). Plasma Hcy level was positively linked with hypertension after controlling for covariates, including folate and vitamin B12.
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12
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Bonilla C, Novaes Baccarini L. Genetic Epidemiology in Latin America: Identifying Strong Genetic Proxies for Complex Disease Risk Factors. Genes (Basel) 2020; 11:E507. [PMID: 32375401 PMCID: PMC7288659 DOI: 10.3390/genes11050507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 04/24/2020] [Accepted: 04/28/2020] [Indexed: 11/16/2022] Open
Abstract
Epidemiology seeks to determine the causal effects of exposures on outcomes related to the health and wellbeing of populations. Observational studies, one of the most commonly used designs in epidemiology, can be biased due to confounding and reverse causation, which makes it difficult to establish causal relationships. In recent times, genetically informed methods, like Mendelian randomization (MR), have been developed in an attempt to overcome these disadvantages. MR relies on the association of genetic variants with outcomes of interest, where the genetic variants are proxies or instruments for modifiable exposures. Because genotypes are sorted independently and at random at the time of conception, they are less prone to confounding and reverse causation. Implementation of MR depends on, among other things, a strong association of the genetic variants with the exposure, which has usually been defined via genome-wide association studies (GWAS). Because GWAS have been most often carried out in European populations, the limited identification of strong instruments in other populations poses a major problem for the application of MR in Latin America. We suggest potential solutions that can be realized with the resources at hand and others that will have to wait for increased funding and access to technology.
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Affiliation(s)
- Carolina Bonilla
- Departamento de Medicina Preventiva, Faculdade de Medicina, Universidade de São Paulo, São Paulo 01246, Brazil
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13
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Homocysteine, the methylenetetrahydrofolate reductase 677C>T polymorphism and hypertension: effect modifiers by lifestyle factors and population subgroups. Br J Nutr 2020; 124:69-79. [PMID: 32127061 DOI: 10.1017/s0007114520000793] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Evidence linking fasting plasma total homocysteine (tHcy) and methylenetetrahydrofolate reductase (MTHFR) 677C>T genotype with hypertension is inconsistent. Differences in B vitamin status, other lifestyle factors or their consideration in analyses might explain this. We investigated these associations in the absence of mandatory fortification with folic acid and B vitamin supplement use. A cross-sectional study was conducted in 788 adults, aged 18-75 years, randomly selected from three Catalonian town population registers. Fasting plasma folate, cobalamin, tHcy, erythrocyte folate, erythrocyte glutathione reductase activation coefficient (EGRAC, functional riboflavin status indicator; increasing EGRAC indicates worsening riboflavin status), MTHFR 677C>T and solute carrier family 1 (SLC19A1) 80 G>A genotypes were determined. Medical history and lifestyle habits were recorded. Principal tHcy determinants differed between women (age, plasma folate, plasma cobalamin, cigarettes/d) and men (MTHFR 677TT genotype, plasma folate, plasma cobalamin and CT genotype). The MTHFR 677C>T polymorphism-tHcy association (β standardised regression coefficients) was stronger in male smokers (0·52, P < 0·001) compared with non-smokers (0·21, P = 0·001) and weaker in participants aged >50 years (0·19, P = 0·007) compared with ≤50 years (0·31, P < 0·001). Hypertension was more probable in the third tHcy tertile compared with other tertiles (OR 1·9; 95 % CI 1·2, 3·0), and in participants aged ≤50 years, for the MTHFR 677TT genotype compared with the CC genotype (OR 4·1; 95 % CI 1·0, 16·9). EGRAC was associated with increased probability of hypertension in participants aged >50 years (OR 6·2; 95 % CI 1·0, 38·7). In conclusion, moderately elevated tHcy and the MTHFR 677CT genotype were associated with hypertension. The MTHFR 677C>T genotype-hypertension association was confined to adults aged ≤50 years.
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14
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Nevmerzhytska NM, Orzheshkovskyi VV, Dzevulska IV, Savosko SI. Mechanisms of Toxic Effects of Homocysteine on the Nervous System. NEUROPHYSIOLOGY+ 2020. [DOI: 10.1007/s11062-020-09832-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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15
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Zhang YM, Zhou XJ, Shi SF, Liu LJ, Lyu JC, Zhang H. Homocysteine and IgA nephropathy: observational and Mendelian randomization analyses. Chin Med J (Engl) 2020; 133:277-284. [PMID: 31929371 PMCID: PMC7004620 DOI: 10.1097/cm9.0000000000000613] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Indexed: 11/27/2022] Open
Abstract
BACKGROUND High levels of plasma homocysteine occur almost uniformly in patients with end-stage renal disease (ESRD). IgA nephropathy (IgAN) is the most common form of primary glomerulonephritis and a common cause of ESRD in young adults. Here, we aimed to detect whether homocysteine was elevated and associated with clinical-pathologic manifestations of IgAN patients and tested its causal effects using a two-sample Mendelian randomization (MR) approach. METHODS For observational analysis, 108 IgAN patients, 30 lupus nephritis (LN) patients, 50 minimal change disease (MCD) patients, and 206 healthy controls were recruited from April 2014 to April 2015. Their plasma homocysteine was measured and clinical-pathologic manifestations were collected from medical records. For MR analysis, we further included 1686 IgAN patients. The missense variant methylenetetrahydrofolate reductase C677T (rs1801133) was selected as an instrument, which was genotyped by TaqMan allele discrimination assays. RESULTS Majority of IgAN patients (93.52%, 101/108) showed elevated levels of plasma homocysteine (>10 μmol/L). Plasma homocysteine in IgAN patients was significantly higher than that in MCD patients (median: 18.32 vs. 11.15 μmol/L, Z = -5.29, P < 0.01) and in healthy controls (median: 18.32 vs. 10.00 μmol/L, Z = -8.76, P < 0.01), but comparable with those in LN patients (median: 18.32 L vs. 14.50 μmol/L, Z = -1.32, P = 0.19). Significant differences were observed in sub-groups of IgAN patients according to quartiles of plasma homocysteine for male ratio (22.22% vs. 51.85% vs. 70.37% vs. 70.37%, χ = 14.29, P < 0.01), serum creatinine (median: 77.00 vs. 100.00 vs. 129.00 vs. 150.00 μmol/L, χ = 34.06, P < 0.01), estimated glomerular filtration rate (median: 100.52 vs. 74.23 vs. 52.68 vs. 42.67 mL·min·1.73 m, χ = 21.75, P < 0.01), systolic blood pressure (median: 120.00 vs. 120.00 vs. 125.00 vs. 130.00 mmHg, χ = 2.97, P = 0.05), diastolic blood pressure (median 80.00 vs. 75.00 vs. 80.00 vs. 81.00 mmHg, χ = 11.47, P < 0.01), and pathologic tubular atrophy and interstitial fibrosis (T) (T0/T1/T2: 62.96%/33.33%/3.70% vs. 29.63%/40.74%/29.63% vs. 24.00%/48.00%/28.00% vs. 14.81%/37.04%/48.15%, χ = 17.66, P < 0.01). The coefficient of each rs1801133-T allele on homocysteine levels after controlling age and sex was 7.12 (P < 0.01). MR estimates showed causal positive effects of homocysteine on serum creatine (β = 0.76, P = 0.02), systolic blood pressure (β = 0.26, P = 0.02), diastolic blood pressure (β = 0.20, P = 0.01), and pathologic T lesion (β = 0.01, P = 0.01) in IgAN. CONCLUSIONS By observational and MR analyses, consistent results were observed for associations of plasma homocysteine with serum creatinine, blood pressures, and pathologic T lesion in IgAN patients.
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Affiliation(s)
- Yue-Miao Zhang
- Renal Division, Department of Medicine, Peking University First Hospital; Institute of Nephrology, Peking University; Key Laboratory of Renal Disease, Ministry of Health of China; Key Laboratory of Chronic Kidney Disease Prevention and Treatment, Peking University, Ministry of Education, Beijing 100034, China
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16
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Xu S, Jiang J, Zhang Y, Chen T, Zhu M, Fang C, Mi Y. Discovery of potential plasma protein biomarkers for acute myocardial infarction via proteomics. J Thorac Dis 2019; 11:3962-3972. [PMID: 31656670 DOI: 10.21037/jtd.2019.08.100] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background Acute myocardial infarction (AMI) is an acute disease with high mortality and seriously threatens human health. The identification of new effective biological markers for AMI is a prerequisite for treatment. Most proteomic studies have focused on atherosclerotic plaques, vascular cells, monocytes and platelets in the blood; however, the concentration of these factors in plasma is low, making it difficult to measure the complexity of plasma components. Moreover, some studies have examined the plasma protein of patients with acute coronary syndrome with histochemistry; however, the results are not consistent. Therefore, it is necessary to further investigate the differential proteins in the plasma of patients with AMI via proteomics to identify new biomarkers of AMI. Methods In this study, immunodepletion of high-abundance plasma proteins followed by an isobaric tagging for relative and absolute quantitation (iTRAQ)-based quantitative proteomic approach was used to analyze plasma samples from 5 control individuals and 10 AMI patients. Results Four hundred sixty-eight proteins were identified from two samples, and 33 proteins were differentially expressed in AMI patients compared to the controls. Among the 33 proteins, 12 proteins showed a ≥1.5-fold change between AMI and control samples. These proteins included fatty acid binding protein 3 (FABP3, ratio =6.36), creatine kinase-MB (CK-MB ratio =4.89), adenylate kinase1 (AK1 ratio =4.16), pro-platelet basic protein (PPBP ratio =3.29), creatine kinase (CK ratio =2.88), platelet factor 4 (PF4 ratio =2.62), peptidyl prolyl isomerase Cyclophilin A (PPIA ratio =2.05), Cofilin-1 (CFL1 ratio =1.81), coronin1A (CORO1A ratio =1.71), protein kinase M (PKM ratio =1.63), ribonuclease inhibitor (RNH1, ratio =1.67), and triose phosphate isomerase (TPI1 ratio =1.56). By contrast, there was a decrease of 19 proteins, such as adiponectin (ADIPOQ ratio =0.70), insulin-like growth factor binding protein6 (IGFBP6 ratio =0.70), Dickkopf-related protein 3 (DKK3 ratio =0.70) and complement 4B (C4B ratio =0.68). The most over-represented term was regulation of cell proliferation in the cellular component category of Gene Ontology (GO). The top 3 biological process terms were regulation of cell proliferation, response to wounding and wound healing. These proteins included immune proteins, blood coagulation proteins, lipid metabolism proteins, cytoskeleton proteins, energy metabolism proteins, gene regulation proteins, myocutaneous proteins, and myocardial remodeling proteins and were highly connected with each other, which indicates that the functional network of these processes contribute to the pathophysiology of AMI. Conclusions In conclusion, the present quantitative proteomic study identified novel AMI biomarker candidates and might provide fundamental information for the development of an AMI biomarker.
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Affiliation(s)
- Shasha Xu
- Department of Cardiology, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China.,Laboratory of Cardiovascular Disease, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China
| | - Jianjun Jiang
- Department of Cardiology, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China.,Laboratory of Cardiovascular Disease, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China
| | - Yang Zhang
- Department of Cardiology, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China.,Laboratory of Cardiovascular Disease, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China
| | - Tingting Chen
- Department of Cardiology, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China.,Laboratory of Cardiovascular Disease, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China
| | - Min Zhu
- Enze Medical Research Center, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China
| | - Chongfeng Fang
- Department of Cardiology, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China.,Laboratory of Cardiovascular Disease, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China
| | - Yafei Mi
- Department of Cardiology, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China.,Laboratory of Cardiovascular Disease, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China.,Enze Medical Research Center, Affiliated Taizhou Hospital of Wenzhou Medical University, Taizhou 317000, China
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17
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Tao L, Yang K, Wu J, Mahara G, Zhang J, Zhang J, Ping Z, Guo X. Association between plasma homocysteine and hypertension: Results from a cross-sectional and longitudinal analysis in Beijing's adult population from 2012 to 2017. J Clin Hypertens (Greenwich) 2018; 20:1624-1632. [PMID: 30362656 PMCID: PMC8030945 DOI: 10.1111/jch.13398] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2018] [Accepted: 08/31/2018] [Indexed: 12/22/2022]
Abstract
Plasma homocysteine (Hcy) levels are associated with elevated blood pressure. However, the causal association between Hcy levels and the risk of hypertension remains ambiguous. Taking the study design effect into consideration, this study aimed to investigate this issue through a cross-sectional and longitudinal analysis. Data were obtained from the Beijing Health Management Cohort study, which conducted routine health check-ups from 2012 to 2017. Multivariate logistic regression was used for the cross-sectional analysis, and a quadratic inference function approach was performed for the longitudinal analysis. A total of 30 376 subjects (mean age = 50.0 years) were included in the cross-sectional analysis, and a subgroup of 3913 subjects without hypertension at baseline was included in the longitudinal analysis. After adjusting for potential confounders, the risk of hypertension increased with Hcy levels in the cross-sectional analysis using the traditional definition of hypertension (OR = 1.262, 95% CI: 1.155-1.378, Q2 vs Q1; OR = 1.458, 95% CI: 1.335-1.593, Q3 vs Q1; OR = 1.520, 95% CI: 1.388-1.664, Q4 vs Q1) and the 2017 hypertension definition (OR = 1.159, 95% CI: 1.067-1.259, Q2 vs Q1; OR = 1.328, 95% CI: 1.221-1.445, Q3 vs Q1; OR = 1.328, 95% CI: 1.217-1.449, Q4 vs Q1). The longitudinal analysis showed that hypertension risk increased in the third quartile of Hcy (OR = 1.268, 95% CI: 1.030-1.560, Q3 vs Q1). Elevated total plasma Hcy may be used as a predictive biomarker for hypertension. Attention should be paid to gender-specific mechanisms when issuing precise precautions.
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Affiliation(s)
- Li‐Xin Tao
- School of Public HealthCapital Medical UniversityBeijingChina
- Beijing Municipal Key Laboratory of Clinical EpidemiologyBeijingChina
| | - Kun Yang
- Evidence‐based Medical CenterXuanwu Hospital, Capital Medical UniversityBeijingChina
| | - Jie Wu
- Department of Clinical MedicinePeking Union Medical College, Tsinghua UniversityBeijingChina
| | - Gehendra Mahara
- National Academy of Medical Sciences, Bir HospitalKathmanduNepal
| | - Jie Zhang
- School of Public HealthCapital Medical UniversityBeijingChina
- Beijing Municipal Key Laboratory of Clinical EpidemiologyBeijingChina
| | | | - Zhao Ping
- Beijing Xiao‐Tang‐Shan HospitalBeijingChina
| | - Xiuhua Guo
- School of Public HealthCapital Medical UniversityBeijingChina
- Beijing Municipal Key Laboratory of Clinical EpidemiologyBeijingChina
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18
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Magalhães WCS, Araujo NM, Leal TP, Araujo GS, Viriato PJS, Kehdy FS, Costa GN, Barreto ML, Horta BL, Lima-Costa MF, Pereira AC, Tarazona-Santos E, Rodrigues MR. EPIGEN-Brazil Initiative resources: a Latin American imputation panel and the Scientific Workflow. Genome Res 2018; 28:1090-1095. [PMID: 29903722 PMCID: PMC6028131 DOI: 10.1101/gr.225458.117] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2017] [Accepted: 05/24/2018] [Indexed: 12/24/2022]
Abstract
EPIGEN-Brazil is one of the largest Latin American initiatives at the interface of human genomics, public health, and computational biology. Here, we present two resources to address two challenges to the global dissemination of precision medicine and the development of the bioinformatics know-how to support it. To address the underrepresentation of non-European individuals in human genome diversity studies, we present the EPIGEN-5M+1KGP imputation panel—the fusion of the public 1000 Genomes Project (1KGP) Phase 3 imputation panel with haplotypes derived from the EPIGEN-5M data set (a product of the genotyping of 4.3 million SNPs in 265 admixed individuals from the EPIGEN-Brazil Initiative). When we imputed a target SNPs data set (6487 admixed individuals genotyped for 2.2 million SNPs from the EPIGEN-Brazil project) with the EPIGEN-5M+1KGP panel, we gained 140,452 more SNPs in total than when using the 1KGP Phase 3 panel alone and 788,873 additional high confidence SNPs (info score ≥ 0.8). Thus, the major effect of the inclusion of the EPIGEN-5M data set in this new imputation panel is not only to gain more SNPs but also to improve the quality of imputation. To address the lack of transparency and reproducibility of bioinformatics protocols, we present a conceptual Scientific Workflow in the form of a website that models the scientific process (by including publications, flowcharts, masterscripts, documents, and bioinformatics protocols), making it accessible and interactive. Its applicability is shown in the context of the development of our EPIGEN-5M+1KGP imputation panel. The Scientific Workflow also serves as a repository of bioinformatics resources.
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Affiliation(s)
- Wagner C S Magalhães
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.,Instituto Mario Penna, Núcleo de Ensino e Pesquisa, Belo Horizonte, Minas Gerais, 30380-472, Brazil
| | - Nathalia M Araujo
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Thiago P Leal
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Gilderlanio S Araujo
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Paula J S Viriato
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Fernanda S Kehdy
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.,Laboratório de Hanseníase, Instituto Oswaldo Cruz, Fundação Oswaldo Cruz, Rio de Janeiro, Rio de Janeiro, 21040-900, Brazil
| | - Gustavo N Costa
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia, 40110-040, Brazil
| | - Mauricio L Barreto
- Instituto de Saúde Coletiva, Universidade Federal da Bahia, Salvador, Bahia, 40110-040, Brazil.,Center for Data and Knowledge Integration for Health, Institute Gonçalo Muniz, Fundação Oswaldo Cruz, Salvador, Bahia, 40296-710, Brazil
| | - Bernardo L Horta
- Programa de Pós-Graduação em Epidemiologia, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, 96020-220, Brazil
| | - Maria Fernanda Lima-Costa
- Instituto de Pesquisa Rene Rachou, Fundação Oswaldo Cruz, Belo Horizonte, Minas Gerais, 30190-009, Brazil
| | - Alexandre C Pereira
- Instituto do Coração, Universidade de São Paulo, São Paulo, São Paulo, 05403-900, Brazil
| | - Eduardo Tarazona-Santos
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil
| | - Maíra R Rodrigues
- Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, 31270-901, Brazil.,Faculdade de Ciências Médicas e Instituto de Matemática, Estatística e Ciência da Computação, Universidade de Campinas, São Paulo, 13083-894, Brazil
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Niedzwiecki MM, Liu X, Zhu H, Hall MN, Slavkovich V, Ilievski V, Levy D, Siddique AB, Kibriya MG, Parvez F, Islam T, Ahmed A, Navas-Acien A, Graziano JH, Finnell RH, Ahsan H, Gamble MV. Serum homocysteine, arsenic methylation, and arsenic-induced skin lesion incidence in Bangladesh: A one-carbon metabolism candidate gene study. ENVIRONMENT INTERNATIONAL 2018; 113:133-142. [PMID: 29421402 PMCID: PMC5873983 DOI: 10.1016/j.envint.2018.01.015] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2017] [Revised: 12/28/2017] [Accepted: 01/18/2018] [Indexed: 05/18/2023]
Abstract
BACKGROUND Inorganic arsenic (As) is methylated via one carbon metabolism (OCM) to mono- and dimethylated arsenicals (MMA and DMA), facilitating urinary excretion. Hyperhomocysteinemia (HHcys), a marker of impaired OCM, is a risk factor for As-induced skin lesions, but the influences of single nucleotide polymorphisms (SNPs) in OCM genes on Hcys, As metabolism and skin lesion risk is unclear. OBJECTIVES To (i) explore genetic sources of Hcys and the causal role of HHcys in As-induced skin lesion development using OCM genetic proxies for HHcys and (ii) identify OCM SNPs associated with urinary As metabolite proportions and/or skin lesion incidence. METHODS We conducted a case-control study nested in the Health Effects of Arsenic Longitudinal Study (HEALS) in Bangladesh which 876 incident skin lesion cases were matched to controls on sex, age, and follow-up time. We measured serum Hcys, urinary As metabolites, and 26 SNPs in 13 OCM genes. RESULTS Serum Hcys and urinary %DMA were independently associated with increased and decreased odds of skin lesions, respectively. The T allele of MTHFR 677 C ➔ T (rs1801133) was associated with HHcys, higher %MMA, and lower %DMA, but not with skin lesions. Interactions between SNPs and water As on skin lesion risk were suggestive for three variants: the G allele of MTRR rs1801394 and T allele of FOLR1 rs1540087 were associated with lower odds of skin lesions with lower As (≤50 μg/L), and the T allele of TYMS rs1001761 was associated with higher odds of skin lesions with higher As. CONCLUSIONS While HHcys and decreased %DMA were associated with increased risk for skin lesions, and MTHFR 677 C ➔ T was a strong predictor of HHcys, MTHFR 677 C ➔ T was not associated with skin lesion risk. Future studies should explore (i) non-OCM and non-genetic determinants of Hcys and (ii) if genetic findings are replicated in other As-exposed populations, mechanisms by which OCM SNPs may influence the dose-dependent effects of As on skin lesion risk.
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Affiliation(s)
- Megan M Niedzwiecki
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA.
| | - Xinhua Liu
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Huiping Zhu
- Department of Pediatrics, University of Texas at Austin Dell Medical School, Austin, TX, USA
| | - Megan N Hall
- Department of Epidemiology, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Vesna Slavkovich
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Vesna Ilievski
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Diane Levy
- Department of Biostatistics, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Abu B Siddique
- Columbia University Arsenic Project in Bangladesh, Dhaka, Bangladesh
| | - Muhammad G Kibriya
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Faruque Parvez
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Tariqul Islam
- University of Chicago Research Bangladesh, Dhaka, Bangladesh
| | - Alauddin Ahmed
- University of Chicago Research Bangladesh, Dhaka, Bangladesh
| | - Ana Navas-Acien
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Joseph H Graziano
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA
| | - Richard H Finnell
- Department of Pediatrics, University of Texas at Austin Dell Medical School, Austin, TX, USA
| | - Habibul Ahsan
- Department of Public Health Sciences, University of Chicago, Chicago, IL, USA
| | - Mary V Gamble
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York, NY, USA.
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20
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Borges MC, Barros AJD, Ferreira DLS, Casas JP, Horta BL, Kivimaki M, Kumari M, Menon U, Gaunt TR, Ben-Shlomo Y, Freitas DF, Oliveira IO, Gentry-Maharaj A, Fourkala E, Lawlor DA, Hingorani AD. Metabolic Profiling of Adiponectin Levels in Adults: Mendelian Randomization Analysis. CIRCULATION. CARDIOVASCULAR GENETICS 2017; 10:e001837. [PMID: 29237687 PMCID: PMC5736126 DOI: 10.1161/circgenetics.117.001837] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 09/13/2017] [Indexed: 11/16/2022]
Abstract
BACKGROUND Adiponectin, a circulating adipocyte-derived protein, has insulin-sensitizing, anti-inflammatory, antiatherogenic, and cardiomyocyte-protective properties in animal models. However, the systemic effects of adiponectin in humans are unknown. Our aims were to define the metabolic profile associated with higher blood adiponectin concentration and investigate whether variation in adiponectin concentration affects the systemic metabolic profile. METHODS AND RESULTS We applied multivariable regression in ≤5909 adults and Mendelian randomization (using cis-acting genetic variants in the vicinity of the adiponectin gene as instrumental variables) for analyzing the causal effect of adiponectin in the metabolic profile of ≤37 545 adults. Participants were largely European from 6 longitudinal studies and 1 genome-wide association consortium. In the multivariable regression analyses, higher circulating adiponectin was associated with higher high-density lipoprotein lipids and lower very-low-density lipoprotein lipids, glucose levels, branched-chain amino acids, and inflammatory markers. However, these findings were not supported by Mendelian randomization analyses for most metabolites. Findings were consistent between sexes and after excluding high-risk groups (defined by age and occurrence of previous cardiovascular event) and 1 study with admixed population. CONCLUSIONS Our findings indicate that blood adiponectin concentration is more likely to be an epiphenomenon in the context of metabolic disease than a key determinant.
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Affiliation(s)
- Maria Carolina Borges
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.).
| | - Aluísio J D Barros
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Diana L Santos Ferreira
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Juan Pablo Casas
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Bernardo Lessa Horta
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Mika Kivimaki
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Meena Kumari
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Usha Menon
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Tom R Gaunt
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Yoav Ben-Shlomo
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Deise F Freitas
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Isabel O Oliveira
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Aleksandra Gentry-Maharaj
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Evangelia Fourkala
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Debbie A Lawlor
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
| | - Aroon D Hingorani
- From the Post-Graduate Program in Epidemiology, Federal University of Pelotas, Brazil (M.C.B., A.J.D.B., B.L.H., D.F.F., I.O.O.); MRC Integrative Epidemiology Unit (M.C.B., D.L.S.F., T.R.G., D.A.L.) and Population Health Sciences, Bristol Medical School (M.C.B., D.L.S.F., T.R.G., Y.B.-S., D.A.L.), University of Bristol, United Kingdom; Farr Institute of Health Informatics (J.P.C., A.D.H.), Department of Epidemiology and Public Health (M. Kivimaki, M. Kumari), Department of Women's Cancer, Institute for Women's Health, Faculty of Population Health Sciences (U.M., A.G.-M., E.F.), and Institute of Cardiovascular Science (A.D.H.), University College London, United Kingdom; Institute for Social and Economic Research, University of Essex, United Kingdom (M. Kumari); and Department of Physiology and Pharmacology, Institute of Biology, Federal University of Pelotas, Brazil (I.O.O.)
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21
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He LM, Gao CY, Wang Y, Wang H, Zhao HY. Red cell distribution width and homocysteine act as independent risk factors for cardiovascular events in newly diagnostic essential hypertension. Oncotarget 2017; 8:102590-102599. [PMID: 29254274 PMCID: PMC5731984 DOI: 10.18632/oncotarget.21964] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2017] [Accepted: 09/23/2017] [Indexed: 12/17/2022] Open
Abstract
Hyperhomocysteinemia and increased red cell distribution width (RDW) are associated with a higher possibility of adverse clinical outcomes of hypertension. The study aims to validate the effect of homocysteine (Hcy) and RDW on cardiovascular events (CVE) and investigate whether RDW is independently associated with serum Hcy in patients with essential hypertension (EH). The study reviewed 804 patients with newly diagnosed EH in our hospital. The clinical characteristics and laboratory results of all subjects were grouped according to the presence/absence of CVE. Patients in the CVE group had higher RDW and Hcy, as compared to the patients in the no CVE group. Multiple Cox regression analysis demonstrated that both RDW (HR = 1.24, 95% CI =1.02-1.56, P = 0.002) and Hcy (HR = 1.37, 95% CI = 1.02-1.80, P < 0.001) resulted significantly related to the CVE. Subsequent analysis found that patients with high RDW had higher Hcy levels as compared with those with low RDW (P = 0.007). Although Pearson's correlation suggested that RDW was positively correlated with Hcy (r = 0.122, P = 0.028), no significant correlation was observed between RDW and Hcy (β = 0.15, p = 0.126) after adjusted for a series of potential confounders using multiple linear regression analysis. In conclusion, RDW is not correlated with Hcy in patients with EH. Both RDW and Hcy are independent risk factors for CVE in newly diagnostic EH and have the potential to improve risk stratification.
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Affiliation(s)
- Lian-Man He
- Department of Hypertension, Henan province People's Hospital, Zheng Zhou, 450003, China
| | - Chuan-Yu Gao
- Department of Cardiology, Henan province People's Hospital, Zheng Zhou, 450003, China
| | - Yong Wang
- Department of Hypertension, Henan province People's Hospital, Zheng Zhou, 450003, China
| | - Hao Wang
- Department of Hypertension, Henan province People's Hospital, Zheng Zhou, 450003, China
| | - Hai-Ying Zhao
- Department of Hypertension, Henan province People's Hospital, Zheng Zhou, 450003, China
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22
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Mandaviya PR, Joehanes R, Aïssi D, Kühnel B, Marioni RE, Truong V, Stolk L, Beekman M, Bonder MJ, Franke L, Gieger C, Huan T, Ikram MA, Kunze S, Liang L, Lindemans J, Liu C, McRae AF, Mendelson MM, Müller-Nurasyid M, Peters A, Slagboom PE, Starr JM, Trégouët DA, Uitterlinden AG, van Greevenbroek MMJ, van Heemst D, van Iterson M, Wells PS, Yao C, Deary IJ, Gagnon F, Heijmans BT, Levy D, Morange PE, Waldenberger M, Heil SG, van Meurs JBJ. Genetically defined elevated homocysteine levels do not result in widespread changes of DNA methylation in leukocytes. PLoS One 2017; 12:e0182472. [PMID: 29084233 PMCID: PMC5662081 DOI: 10.1371/journal.pone.0182472] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 07/19/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND DNA methylation is affected by the activities of the key enzymes and intermediate metabolites of the one-carbon pathway, one of which involves homocysteine. We investigated the effect of the well-known genetic variant associated with mildly elevated homocysteine: MTHFR 677C>T independently and in combination with other homocysteine-associated variants, on genome-wide leukocyte DNA-methylation. METHODS Methylation levels were assessed using Illumina 450k arrays on 9,894 individuals of European ancestry from 12 cohort studies. Linear-mixed-models were used to study the association of additive MTHFR 677C>T and genetic-risk score (GRS) based on 18 homocysteine-associated SNPs, with genome-wide methylation. RESULTS Meta-analysis revealed that the MTHFR 677C>T variant was associated with 35 CpG sites in cis, and the GRS showed association with 113 CpG sites near the homocysteine-associated variants. Genome-wide analysis revealed that the MTHFR 677C>T variant was associated with 1 trans-CpG (nearest gene ZNF184), while the GRS model showed association with 5 significant trans-CpGs annotated to nearest genes PTF1A, MRPL55, CTDSP2, CRYM and FKBP5. CONCLUSIONS Our results do not show widespread changes in DNA-methylation across the genome, and therefore do not support the hypothesis that mildly elevated homocysteine is associated with widespread methylation changes in leukocytes.
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Grants
- G0700704 Medical Research Council
- N01HC25195 NHLBI NIH HHS
- Wellcome Trust
- MR/K026992/1 Medical Research Council
- K99 HL136875 NHLBI NIH HHS
- BB/F019394/1 Biotechnology and Biological Sciences Research Council
- National Institutes of Health
- Erasmus Medical Center and Erasmus University, Rotterdam
- Netherlands Organization for the Health Research and Development (ZonMw)
- Research Institute for Diseases in the Elderly (RIDE)
- Ministry of Education, Culture and Science
- Ministry for Health, Welfare and Sports, the European Commission (DG XII)
- Municipality of Rotterdam
- Netherlands CardioVascular Research Initiative (the Dutch Heart Foundation, Dutch Federation of University Medical Centres, the Netherlands Organisation for Health Research and Development, and the Royal Netherlands Academy of Sciences) for the GENIUS project “Generating the best evidence-based pharmaceutical targets for atherosclerosis”
- BBMRI-NL, a research infrastructure financed by the Dutch government
- Région Ile de France (CORDDIM)
- Région Ile de France, Pierre and Marie Curie University
- ICAN Institute for Cardiometabolism and Nutrition
- Division of Intramural Research, National Heart, Lung, and Blood Institute, National Institutes of Health
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Affiliation(s)
- Pooja R. Mandaviya
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Roby Joehanes
- Institute for Aging Research, Hebrew SeniorLife, Harvard Medical School, Boston, MA, United States of America
| | - Dylan Aïssi
- Sorbonne Universités, UPMC Univ. Paris 06, INSERM, UMR_S 1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - Brigitte Kühnel
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
| | - Riccardo E. Marioni
- Queensland Brain Institute, The University of Queensland, Brisbane, Australia
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
- Medical Genetics Section, Centre for Genomic and Experimental Medicine, Institute of Genetics and Molecular Medicine, University of Edinburgh, Edinburgh, United Kingdom
| | - Vinh Truong
- Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Lisette Stolk
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Marian Beekman
- Molecular Epidemiology Section, Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Marc Jan Bonder
- Department of Genetics, University Medical Center Groningen, Groningen, The Netherlands
| | - Lude Franke
- Department of Genetics, University Medical Center Groningen, Groningen, The Netherlands
| | - Christian Gieger
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
| | - Tianxiao Huan
- Framingham Heart Study, Framingham, MA, United States of America
- The Population Studies Branch, National Heart, Lung, and Blood Institute of the National Institutes of Health, Bethesda, MD, United States of America
| | - M. Arfan Ikram
- Department of Epidemiology, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Sonja Kunze
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
| | - Liming Liang
- Harvard T.H. Chan School of Public Health, Boston, MA, United States of America
| | - Jan Lindemans
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Chunyu Liu
- Framingham Heart Study, Framingham, MA, United States of America
- The Population Studies Branch, National Heart, Lung, and Blood Institute of the National Institutes of Health, Bethesda, MD, United States of America
| | - Allan F. McRae
- Queensland Brain Institute, The University of Queensland, Brisbane, Australia
| | - Michael M. Mendelson
- Framingham Heart Study, Framingham, MA, United States of America
- The Population Studies Branch, National Heart, Lung, and Blood Institute of the National Institutes of Health, Bethesda, MD, United States of America
- Department of Cardiology, Boston Children's Hospital, Boston, MA, United States of America
| | - Martina Müller-Nurasyid
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
- Institute of Genetic Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Department of Medicine I, University Hospital Munich, Campus Grosshadern, Ludwig-Maximilians-University, Munich, Germany
| | - Annette Peters
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- DZHK (German Centre for Cardiovascular Research), partner site Munich Heart Alliance, Munich, Germany
| | - P. Eline Slagboom
- Molecular Epidemiology Section, Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - John M. Starr
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
| | - David-Alexandre Trégouët
- Sorbonne Universités, UPMC Univ. Paris 06, INSERM, UMR_S 1166, Team Genomics & Pathophysiology of Cardiovascular Diseases, Paris, France
- ICAN Institute for Cardiometabolism and Nutrition, Paris, France
| | - André G. Uitterlinden
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Marleen M. J. van Greevenbroek
- Department of Internal Medicine and School for Cardiovascular Diseases (CARIM), Maastricht University Medical Center, Maastricht, The Netherlands
| | - Diana van Heemst
- Department of Gerontology and Geriatrics Section, Leiden University Medical Center, Leiden, The Netherlands
| | - Maarten van Iterson
- Molecular Epidemiology Section, Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Philip S. Wells
- Department of Medicine, University of Ottawa, and the Ottawa Hospital Research Institute, Ottawa, Canada
| | - Chen Yao
- Framingham Heart Study, Framingham, MA, United States of America
- The Population Studies Branch, National Heart, Lung, and Blood Institute of the National Institutes of Health, Bethesda, MD, United States of America
| | - Ian J. Deary
- Centre for Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, Edinburgh, United Kingdom
- Department of Psychology, University of Edinburgh, Edinburgh, United Kingdom
| | - France Gagnon
- Division of Epidemiology, Dalla Lana School of Public Health, University of Toronto, Toronto, Canada
| | - Bastiaan T. Heijmans
- Molecular Epidemiology Section, Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
| | - Daniel Levy
- Framingham Heart Study, Framingham, MA, United States of America
- The Population Studies Branch, National Heart, Lung, and Blood Institute of the National Institutes of Health, Bethesda, MD, United States of America
| | - Pierre-Emmanuel Morange
- Laboratory of Haematology, La Timone Hospital, Marseille, France
- Institut National pour la Santé et la Recherche Médicale (INSERM), UMR_S 1062, Inra UMR_1260, Aix-Marseille Université, Marseille, France
| | - Melanie Waldenberger
- Research Unit of Molecular Epidemiology, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
- Institute of Epidemiology II, Helmholtz Zentrum München—German Research Center for Environmental Health, Neuherberg, Germany
| | - Sandra G. Heil
- Department of Clinical Chemistry, Erasmus University Medical Center, Rotterdam, The Netherlands
| | - Joyce B. J. van Meurs
- Department of Internal Medicine, Erasmus University Medical Center, Rotterdam, The Netherlands
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Homocysteine, visceral adiposity-related novel cardiometabolic risk factors, and exaggerated blood pressure response to the exercise treadmill test. Blood Press Monit 2017; 22:333-338. [PMID: 29076884 DOI: 10.1097/mbp.0000000000000300] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE Exaggerated blood pressure response to exercise is a risk factor for the development of future hypertension. In this study, we aimed to investigate the association between homocysteine, epicardial fat thickness, nonalcoholic hepatic steatosis, and exaggerated blood pressure response to exercise. PARTICIPANTS AND METHODS We included 44 normotensive and 40 patients with exaggerated blood pressure response to exercise who have normal resting blood pressure and without a previous diagnosis of hypertension. All patients underwent treadmill exercise test and clinical, ultrasonographic, and echocardiographic evaluation. Exaggerated blood pressure response to exercise is defined as peak exercise systolic blood pressure of at least 210 mmHg in men and at least 190 mmHg in women. Homocysteine and other biochemical parameters were determined with standardized automated laboratory tests. RESULTS Mean age of all participants is 47.9±8.5 years, and 36 of 84 participants were female. The frequency of diabetes mellitus in both groups was similar (P=0.250). Homeostasis model assessment index-insulin resistance had a statistically insignificant trend to be higher in a patient with exercise hypertension (P=0.058). The nonalcoholic fatty liver was more frequent in patients with exercise hypertension (13.6 vs. 47.5%, P=0.002). Epicardial fat thickness was increased in patients with exercise hypertension (5.5±1.5 vs. 7.3±1.1 mm; P=0.001). However, homocysteine levels did not significantly differ between normotensive and exercise hypertensive patients [12.3 μmol/l (5.7-16.9 μmol/l) vs. 13 μmol/l (5.9-28.3 μmol/l); P=0.883]. CONCLUSION In our study, homocysteine levels were not associated with exaggerated blood pressure response to exercise; however, fatty liver and epicardial fat thickness as visceral adiposity-related cardiometabolic risk factors were significantly related with exaggerated blood pressure response to exercise in patients without a previous diagnosis of hypertension.
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Fu Y, Wang X, Kong W. Hyperhomocysteinaemia and vascular injury: advances in mechanisms and drug targets. Br J Pharmacol 2017; 175:1173-1189. [PMID: 28836260 DOI: 10.1111/bph.13988] [Citation(s) in RCA: 78] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Revised: 07/27/2017] [Accepted: 08/12/2017] [Indexed: 12/14/2022] Open
Abstract
Homocysteine is a sulphur-containing non-proteinogenic amino acid. Hyperhomocysteinaemia (HHcy), the pathogenic elevation of plasma homocysteine as a result of an imbalance of its metabolism, is an independent risk factor for various vascular diseases, such as atherosclerosis, hypertension, vascular calcification and aneurysm. Treatments aimed at lowering plasma homocysteine via dietary supplementation with folic acids and vitamin B are more effective in preventing vascular disease where the population has a normally low folate consumption than in areas with higher dietary folate. To date, the mechanisms of HHcy-induced vascular injury are not fully understood. HHcy increases oxidative stress and its downstream signalling pathways, resulting in vascular inflammation. HHcy also causes vascular injury via endoplasmic reticulum stress. Moreover, HHcy up-regulates pathogenic genes and down-regulates protective genes via DNA demethylation and methylation respectively. Homocysteinylation of proteins induced by homocysteine also contributes to vascular injury by modulating intracellular redox state and altering protein function. Furthermore, HHcy-induced vascular injury leads to neuronal damage and disease. Also, an HHcy-activated sympathetic system and HHcy-injured adipose tissue also cause vascular injury, thus demonstrating the interactions between the organs injured by HHcy. Here, we have summarized the recent developments in the mechanisms of HHcy-induced vascular injury, which are further considered as potential therapeutic targets in this condition. LINKED ARTICLES This article is part of a themed section on Spotlight on Small Molecules in Cardiovascular Diseases. To view the other articles in this section visit http://onlinelibrary.wiley.com/doi/10.1111/bph.v175.8/issuetoc.
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Affiliation(s)
- Yi Fu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Health Science Center, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - Xian Wang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Health Science Center, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
| | - Wei Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University, Health Science Center, Beijing, China.,Key Laboratory of Molecular Cardiovascular Science, Ministry of Education, Beijing, China
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Kim KN, Lee MR, Lim YH, Hong YC. Blood lead levels, iron metabolism gene polymorphisms and homocysteine: a gene-environment interaction study. Occup Environ Med 2017; 74:899-904. [DOI: 10.1136/oemed-2017-104375] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Revised: 06/05/2017] [Accepted: 06/20/2017] [Indexed: 11/04/2022]
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Momin M, Fan F, Li J, Qin X, Jia J, Qi L, Zhang Y, Huo Y. Associations of plasma homocysteine levels with peripheral systolic blood pressure and noninvasive central systolic blood pressure in a community-based Chinese population. Sci Rep 2017; 7:6316. [PMID: 28740096 PMCID: PMC5524946 DOI: 10.1038/s41598-017-06611-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 06/14/2017] [Indexed: 12/02/2022] Open
Abstract
Previous studies indicated that homocysteine (Hcy) is associated with higher peripheral systolic blood pressure (pSBP). There have been few data on the relationship between Hcy and central SBP (cSBP). A total of 4,364 Chinese subjects from the Shijingshan community in Beijing were included. cSBP and pSBP were measured with an Omron HEM-9000AI device. Subjects were 57.20 ± 8.9 years old, 37.9% were male. The median of Hcy was 11.96 μmol/L. The mean of cSBP and pSBP was 129.94 ± 18.03 mmHg and 133.25 ± 18.58 mmHg. lnHcy was associated with cSBP (adjusted β = 2.17, SE = 0.80, P = 0.007) and pSBP (adjusted β = 2.42, SE = 0.75, P = 0.001). With increasing Hcy, there were enhanced correlations of Hcy with pSBP and cSBP (p for trend between quartiles <0.01). Using Q1 for reference, the Q4 was associated with cSBP (adjusted β = 1.77, SE = 0.89, P = 0.047) and pSBP (adjusted β = 2.15, SE = 0.84, P = 0.011). The correlations were more significant in non-obese subjects than in obese subjects (cSBP: β = 4.30 vs 0.46, pSBP: β = 5.04 vs 1.18, P for interaction <0.001). Our study showed that Hcy was associated with higher cSBP and pSBP, especially in non-obese subjects.
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Affiliation(s)
- Mohetaboer Momin
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Fangfang Fan
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Jianping Li
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Xianhui Qin
- Renal Division, Nanfang Hospital, Southern Medical University, National Clinical Research Center for Kidney Disease, State Key Laboratory for Organ Failure Research, Guangzhou, China
| | - Jia Jia
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Litong Qi
- Department of Cardiology, Peking University First Hospital, Beijing, China
| | - Yan Zhang
- Department of Cardiology, Peking University First Hospital, Beijing, China.
| | - Yong Huo
- Department of Cardiology, Peking University First Hospital, Beijing, China.
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27
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Zhong F, Zhuang L, Wang Y, Ma Y. Homocysteine levels and risk of essential hypertension: A meta-analysis of published epidemiological studies. Clin Exp Hypertens 2017; 39:160-167. [PMID: 28287885 DOI: 10.1080/10641963.2016.1226888] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
BACKGROUND Plasma homocysteine (Hcy) levels may be associated with essential hypertension (EH). However, the results of previous studies on this association are inconsistent. METHODS In this meta-analysis, we performed a systematic literature search of the Embase, PubMed, Cochrane Library, and Web of Science for the relevant articles dated up to March 2016. Pooled odds ratios (ORs) and corresponding 95% confidence intervals (CIs) were used to evaluate the estimates. RESULTS We included 11 studies with a total of 16,571 participants (4,830 EH cases). We found that elevated Hcy levels were associated with the risk of EH (pooled OR: 1.36, 95% CI: 1.02-1.80 in the random-effects model). However, subsequent subgroup analyses showed that elevated Hcy levels increased the EH risk in retrospective studies (OR: 1.82, 95% CI: 1.53-2.16; p < 0.001) and unadjusted studies (OR: 1.72, 95% CI: 1.43-2.07; p < 0.001), but not in perspective studies (OR: 0.99, 95% CI: 0.73-1.28; p = 0.939) and adjusted studies (OR: 1.21, 95% CI: 0.85-1.72; p = 0.297). No significant publication bias was found (p = 0.876 for Begg's test, p = 0.144 for Egger's test). CONCLUSION Plasma Hcy levels are associated with EH risk. However, our findings do not support a causal association between Hcy levels and EH.
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Affiliation(s)
- Fade Zhong
- a Ningbo Municipal Blood Center , Ningbo , Zhejiang , China
| | - Li Zhuang
- a Ningbo Municipal Blood Center , Ningbo , Zhejiang , China
| | - Ying Wang
- b Ningbo Municipal Medical Center Eastern Lihuili Hospital , Ningbo , Zhejiang , China
| | - Youli Ma
- c Ningbo Municipal Medical Center Lihuili Hospital , Ningbo , Zhejiang , China
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