1
|
Ramírez Gallegos I, Marina Arroyo M, López-González ÁA, Vicente-Herrero MT, Vallejos D, Sastre-Alzamora T, Ramírez-Manent JI. The Effect of a Program to Improve Adherence to the Mediterranean Diet on Cardiometabolic Parameters in 7034 Spanish Workers. Nutrients 2024; 16:1082. [PMID: 38613115 PMCID: PMC11013770 DOI: 10.3390/nu16071082] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Revised: 03/29/2024] [Accepted: 04/05/2024] [Indexed: 04/14/2024] Open
Abstract
BACKGROUND Cardiovascular and metabolic diseases include a large group of pathologies and constitute one of the most serious chronic health problems facing the 21st century, with high rates of morbidity and mortality worldwide. Unhealthy diets influence the development of these pathologies. The Mediterranean diet can be an important part in the treatment of these diseases. The objective of this study was to assess the effect of a program that aims to increase adherence to the Mediterranean diet on the improvement of different cardiometabolic risk parameters. METHODS A prospective intervention study was carried out on 7034 Spanish workers. Prior to the intervention, 22 cardiometabolic risk scales were evaluated. Participants in this study were informed both orally and in writing of the characteristics and benefits of the Mediterranean diet and were given the website of the Ministry of Health, Consumption and Social Welfare of Spain, which provides advice on nutrition. Adherence to the Mediterranean diet was reinforced by sending a monthly SMS to their mobile phones. After six months of follow-up, the 22 risk scales were re-evaluated to assess changes. Means and standard deviations were calculated using Student's t test to analyse quantitative variables. Prevalence was calculated using the Chi-square test when the variables were qualitative. RESULTS All the cardiometabolic risk scales studied decreased after implementing a program to improve and enhance adherence to the Mediterranean diet. The number of losses in the sample was very low, standing at 4.31%. CONCLUSIONS The Mediterranean diet is effective in reducing all cardiovascular risk scales evaluated. The mean values and prevalence of high values of the different cardiometabolic risk scales analysed led to lower values after the implementation of the program to increase adherence to the Mediterranean diet. We observed a significant positive difference in metabolic age in both sexes. We have obtained a significant improvement in the insulin resistance index, especially in the SPISE-IR index, data that we have not found in previous publications. Easy access to the Internet and new information and communication technologies facilitate adherence to a diet and can reduce the number of losses.
Collapse
Affiliation(s)
- Ignacio Ramírez Gallegos
- Investigation Group ADEMA SALUD, University Institute for Research in Health Sciences (IUNICS), 07010 Palma, Balearic Islands, Spain; (I.R.G.); (M.M.A.); (M.T.V.-H.); (D.V.); (T.S.-A.); (J.I.R.-M.)
| | - Marta Marina Arroyo
- Investigation Group ADEMA SALUD, University Institute for Research in Health Sciences (IUNICS), 07010 Palma, Balearic Islands, Spain; (I.R.G.); (M.M.A.); (M.T.V.-H.); (D.V.); (T.S.-A.); (J.I.R.-M.)
| | - Ángel Arturo López-González
- Investigation Group ADEMA SALUD, University Institute for Research in Health Sciences (IUNICS), 07010 Palma, Balearic Islands, Spain; (I.R.G.); (M.M.A.); (M.T.V.-H.); (D.V.); (T.S.-A.); (J.I.R.-M.)
- Faculty of Dentistry, University School ADEMA, 07010 Palma, Balearic Islands, Spain
- Institut d’Investigació Sanitària de les Illes Balears (IDISBA), Balearic Islands Health Research Institute Foundation, 07010 Palma, Balearic Islands, Spain
- Balearic Islands Health Service, 07010 Palma, Balearic Islands, Spain
| | - Maria Teófila Vicente-Herrero
- Investigation Group ADEMA SALUD, University Institute for Research in Health Sciences (IUNICS), 07010 Palma, Balearic Islands, Spain; (I.R.G.); (M.M.A.); (M.T.V.-H.); (D.V.); (T.S.-A.); (J.I.R.-M.)
| | - Daniela Vallejos
- Investigation Group ADEMA SALUD, University Institute for Research in Health Sciences (IUNICS), 07010 Palma, Balearic Islands, Spain; (I.R.G.); (M.M.A.); (M.T.V.-H.); (D.V.); (T.S.-A.); (J.I.R.-M.)
| | - Tomás Sastre-Alzamora
- Investigation Group ADEMA SALUD, University Institute for Research in Health Sciences (IUNICS), 07010 Palma, Balearic Islands, Spain; (I.R.G.); (M.M.A.); (M.T.V.-H.); (D.V.); (T.S.-A.); (J.I.R.-M.)
| | - José Ignacio Ramírez-Manent
- Investigation Group ADEMA SALUD, University Institute for Research in Health Sciences (IUNICS), 07010 Palma, Balearic Islands, Spain; (I.R.G.); (M.M.A.); (M.T.V.-H.); (D.V.); (T.S.-A.); (J.I.R.-M.)
- Institut d’Investigació Sanitària de les Illes Balears (IDISBA), Balearic Islands Health Research Institute Foundation, 07010 Palma, Balearic Islands, Spain
- Balearic Islands Health Service, 07010 Palma, Balearic Islands, Spain
- Faculty of Medicine, University of the Balearic Islands, 07010 Palma, Balearic Islands, Spain
| |
Collapse
|
2
|
Bala R, Verma R, Verma P, Singh V, Yadav N, Rajender S, Agrawal NR, Singh K. Hyperhomocysteinemia and low vitamin B12 are associated with the risk of early pregnancy loss: A clinical study and meta-analyses. Nutr Res 2021; 91:57-66. [PMID: 34134041 DOI: 10.1016/j.nutres.2021.05.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/14/2021] [Accepted: 05/11/2021] [Indexed: 10/21/2022]
Abstract
One-carbon metabolism is crucial for the maintenance of healthy pregnancy and alterations in this pathway have been associated with various pregnancy-related complications. Therefore, the present study was conducted to test the hypothesis that the altered folic acid, vitamin B12 and homocysteine levels are associated with the risk of early pregnancy loss (EPL). Plasma folic acid, vitamin B12 and homocysteine levels were analyzed in 83 females with EPL and 70 healthy pregnant females in their first trimester. Further, meta-analyses of folic acid, vitamin B12 and homocysteine were also performed involving various eligible studies. Results from our case-control study and meta-analysis showed that folic acid deficiency is not associated with the risk of EPL. On the other hand, low vitamin B12 and hyperhomocysteinemia were individually found to be significant risk factors for EPL in the present study (P < .01, P < .05, respectively) and meta-analysis as well (P < .001, P < .05, respectively). Vitamin B12 deficiency in combination with hyperhomocysteinemia was a more serious risk factor for EPL (Odds Ratio = 4.98, P = 0.002). Therefore, we conclude that vitamin B12 deficiency and elevated homocysteine levels are independent risk factors for EPL, and of higher risk when combined. The assessment of vitamin B12 and homocysteine levels may serve as a good screening marker for EPL risk.
Collapse
Affiliation(s)
- Renu Bala
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Rachna Verma
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Priyanka Verma
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Vertika Singh
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Namrata Yadav
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Singh Rajender
- Division of Endocrinology, Central Drug Research Institute, Lucknow, Uttar Pradesh, India
| | - Nisha Rani Agrawal
- Department of Obstetrics and Gynecology, Institute of Medical Sciences, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India
| | - Kiran Singh
- Department of Molecular and Human Genetics, Banaras Hindu University, Varanasi 221005, Uttar Pradesh, India.
| |
Collapse
|
3
|
Hyperhomocysteinemia and Low Folate and Vitamin B12 Are Associated with Vascular Dysfunction and Impaired Nitric Oxide Sensitivity in Morbidly Obese Patients. Nutrients 2020; 12:nu12072014. [PMID: 32645905 PMCID: PMC7400872 DOI: 10.3390/nu12072014] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 06/22/2020] [Accepted: 07/01/2020] [Indexed: 12/12/2022] Open
Abstract
There is a high prevalence of hyperhomocysteinemia that has been linked to high cardiovascular risk in obese individuals and could be attributed to poor nutritional status of folate and vitamin B12. We sought to examine the association between blood homocysteine (Hcy) folate, and vitamin B12 levels and vascular dysfunction in morbidly obese adults using novel ex vivo flow-induced dilation (FID) measurements of isolated adipose tissue arterioles. Brachial artery flow-mediated dilation (FMD) was also measured. Subcutaneous and visceral adipose tissue biopsies were obtained from morbidly obese individuals and non-obese controls. Resistance arterioles were isolated in which FID, acetylcholine-induced dilation (AChID), and nitric oxide (NO) production were measured in the absence or presence of the NO synthase inhibitor, L-NAME, Hcy, or the superoxide dismutase mimetic, TEMPOL. Our results demonstrated that plasma Hcy concentrations were significantly higher, while folate, vitamin B12, and NO were significantly lower in obese subjects compared to controls. Hcy concentrations correlated positively with BMI, fat %, and insulin levels but not with folate or vitamin B12. Brachial and arteriolar vasodilation were lower in obese subjects, positively correlated with folate and vitamin B12, and inversely correlated with Hcy. Arteriolar NO measurements and sensitivity to L-NAME were lower in obese subjects compared to controls. Finally, Hcy incubation reduced arteriolar FID and NO sensitivity, an effect that was abolished by TEMPOL. In conclusion, these data suggest that high concentrations of plasma Hcy and low concentrations of folate and vitamin B12 could be independent predictors of vascular dysfunction in morbidly obese individuals.
Collapse
|
4
|
Liao J, Wang N, Ma M, Lu T, Yan H, Yue W. C677T Polymorphism in the MTHFR Gene Is Associated With Risperidone-Induced Weight Gain in Schizophrenia. Front Psychiatry 2020; 11:617. [PMID: 32714219 PMCID: PMC7343847 DOI: 10.3389/fpsyt.2020.00617] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Accepted: 06/12/2020] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVE To explore the association of methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism with risperidone-induced weight gain. METHODS We analyzed the association between MTHFR C677T polymorphism and risperidone-induced weight gain in 356 schizophrenia patients. The patients were treated with risperidone for 8 weeks. The height and body weight of the patients were measured before and 8 weeks after risperidone treatment. Blood DNA was genotyped for MTHFR C677T polymorphisms. RESULTS We found a significant association between MTHFR C677T polymorphism and body mass index (BMI) change after 8-week risperidone treatment. The BMI of carriers with different genotypes of MTHFR gene increased over 2-8 weeks. After 8 weeks of risperidone treatment, BMI added value (kg/m2) of CC or CT genotype carriers was significantly higher than that of TT genotype carriers [CC (4.47 ± 1.09), CT (4.54 ± 1.27), TT (2.31 ± 0.75), F = 5.634, P = 0.001]. Based on whether the rate of weight gain from baseline at 8 weeks of treatment exceeded 7%, it was divided into a weight gain group (n = 61) and a non-weight gain group (n = 295). The C allele frequency was significantly different between the two groups (48.4% vs 32.4%, χ2 = 11.342, P = 0.001). CONCLUSION MTHFR C677T polymorphism was associated with risperidone-induced weight gain in Chinese Han population.
Collapse
Affiliation(s)
- Jingping Liao
- Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China.,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University) & Chinese Academy of Medical Sciences Research Unit (No.2018RU006), Beijing, China.,School of Nursing, Peking University, Beijing, China
| | - Ning Wang
- Center for Biological Psychiatry, Beijing HuiLongGuan Hospital, Beijing, China
| | - Mengying Ma
- Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China.,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University) & Chinese Academy of Medical Sciences Research Unit (No.2018RU006), Beijing, China
| | - Tianlan Lu
- Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China.,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University) & Chinese Academy of Medical Sciences Research Unit (No.2018RU006), Beijing, China
| | - Hao Yan
- Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China.,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University) & Chinese Academy of Medical Sciences Research Unit (No.2018RU006), Beijing, China
| | - Weihua Yue
- Institute of Mental Health, The Sixth Hospital, Peking University, Beijing, China.,National Clinical Research Center for Mental Disorders & Key Laboratory of Mental Health, Ministry of Health (Peking University) & Chinese Academy of Medical Sciences Research Unit (No.2018RU006), Beijing, China.,School of Nursing, Peking University, Beijing, China.,PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, China
| |
Collapse
|
5
|
Suhett LG, Hermsdorff HHM, Rocha NP, Silva MA, Filgueiras MDS, Milagres LC, Peluzio MDCG, de Novaes JF. Increased C-Reactive Protein in Brazilian Children: Association with Cardiometabolic Risk and Metabolic Syndrome Components (PASE Study). Cardiol Res Pract 2019; 2019:3904568. [PMID: 31143476 PMCID: PMC6501180 DOI: 10.1155/2019/3904568] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Accepted: 03/03/2019] [Indexed: 12/19/2022] Open
Abstract
C-reactive protein (CRP) is a marker of subclinical inflammation that has been found to be associated with cardiovascular disease risk. However, few studies have investigated the relationship between CRP and cardiometabolic markers in a representative sample of prepubescent children. The objective was to evaluate the high-sensitive CRP (hs-CRP) and its association with traditional and nontraditional cardiometabolic risk factors, as well as metabolic syndrome (MetS) components in Brazilian children. This is a cross-sectional representative study, with participants of the Schoolchildren Health Assessment Survey (PASE). Children from 8 to 9 years old (n=350) enrolled in public and private schools in the municipality of Viçosa, Minas Gerais, Brazil, were evaluated. Sociodemographic evaluation was performed through a semistructured questionnaire. Anthropometric, body composition, clinical, and biochemical measures were analyzed for cardiometabolic risk assessment. The total mean of serum hs-CRP concentration was 0.62 (±1.44) mg/L. hs-CRP was significantly correlated with several anthropometric, biochemical, and clinical parameters in this population (P < 0.05). hs-CRP was positively associated with the accumulation of cardiometabolic risk factors and MetS components (P < 0.05). Children with excessive weight; abdominal obesity; increased gynoid and android body fat; low HDL-c; hyperglycemia; and elevated uric acid, homocysteine, and apoB had higher chances of presenting increased hs-CRP (P < 0.05). In this study, Brazilian children with cardiometabolic risk already presented elevated serum hs-CRP concentration. hs-CRP was associated with the increase of traditional and nontraditional cardiometabolic risk factors, as well as the accumulation of MetS components.
Collapse
Affiliation(s)
- Lara Gomes Suhett
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| | - Helen Hermana Miranda Hermsdorff
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| | - Naruna Pereira Rocha
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| | - Mariane Alves Silva
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| | - Mariana De Santis Filgueiras
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| | - Luana Cupertino Milagres
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| | - Maria do Carmo Gouveia Peluzio
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| | - Juliana Farias de Novaes
- Department of Nutrition and Health, Universidade Federal de Viçosa (UFV), Av. P.H. Rolfs s/n, Campus Universitário, CEP 36570-900 Viçosa, Minas Gerais, Brazil
| |
Collapse
|
6
|
Campbell MS, Ouyang A, I M K, Charnigo RJ, Westgate PM, Fleenor BS. Influence of enhanced bioavailable curcumin on obesity-associated cardiovascular disease risk factors and arterial function: A double-blinded, randomized, controlled trial. Nutrition 2019; 62:135-139. [PMID: 30889454 DOI: 10.1016/j.nut.2019.01.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 12/31/2018] [Accepted: 01/08/2019] [Indexed: 01/12/2023]
Abstract
OBJECTIVES This study aimed to determine whether an enhanced bioavailable curcumin formulation, CurQfen®, would improve circulating cardiovascular disease-related blood biomarkers and arterial function in young (age 18-35 y), obese (body mass index ≥ 30.0 kg/m2) men. METHODS This double-blinded, placebo-controlled trial evaluated 22 men. The participants were matched based on body mass index and randomized to the intervention (curcumin formulated with fenugreek soluble fiber, for enhanced absorption) or control (fenugreek soluble fiber) group for 12 wk at 500mg/d without dietary modification or exercise. Blood samples and endothelial function measures were acquired at 0 and 12 wk, and blood samples were analyzed for cardiovascular disease-related blood biomarkers. Furthermore, central (aortic) blood pressure and augmentation index were monitored at 0, 4, 8, and 12 wk. RESULTS After 12 wk of intervention, homocysteine levels were lower (curcumin before: 12.22 ± 2.29 µg/mL, after: 8.62 ± 1.02 µg/mL versus placebo before: 9.45 ± 0.84 µg/mL, after: 11.84 ± 1.63 µg/mL; P = 0.04) and high-density lipoprotein levels were higher (curcumin before: 40.77 ± 5.37 mg/dL, after: 54.56 ± 11.72 mg/dL versus placebo before: 61.20 ± 5.76 mg/dL, after: 48.82 ± 5.49 mg/dL; P = 0.04) in the curcumin group relative to the placebo group. However, there was no significant difference in changes between the circulating concentrations of glucose, insulin, leptin, adiponectin, or oxidative stress biomarkers in the curcumin group compared with the placebo group (P > 0.05). No changes were found with endothelial function, augmentation index, or central blood pressure in the curcumin group compared with the placebo group (P > 0.05). CONCLUSIONS Our data provide evidence for an enhanced bioavailable curcumin to improve homocysteine and high-density lipoprotein concentrations, which may promote favorable cardiovascular health in young, obese men. Improvements in endothelial function or blood pressure were not observed with curcumin supplementation, thus further investigation is warranted.
Collapse
Affiliation(s)
- Marilyn S Campbell
- Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky 40506, USA
| | - An Ouyang
- Department of Kinesiology and Health Promotion, University of Kentucky, Lexington, Kentucky 40506, USA
| | - Krishnakumar I M
- Akay Flavours & Aromatics Pvt. Ltd., R&D Centre, Ambunadu, Malayidamthuruthu P.O., Cochin 683561, India
| | - Richard J Charnigo
- Department of Biostatistics, University of Kentucky, Lexington, Kentucky 40536, USA
| | - Philip M Westgate
- Department of Biostatistics, University of Kentucky, Lexington, Kentucky 40536, USA
| | - Bradley S Fleenor
- Human Performance Laboratory, Ball State University, Muncie, Indiana 47306, USA.
| |
Collapse
|
7
|
Azizi S, Shamshirian A, Alizadeh-Navaei R, Jafarpour H, Asemi Z, Tamtaji OR, Vaziri MS, Homayounfar R, Rezaei Shahmirzadi A, Alipoor R. A Genetic Association Study of MTHFR C677T Polymorphism with Risk of Metabolic Syndrome: A Systematic Review and Meta-Analysis. Galen Med J 2019; 8:e1472. [PMID: 34466514 PMCID: PMC8343661 DOI: 10.31661/gmj.v8i0.1472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2018] [Revised: 01/23/2019] [Accepted: 02/08/2019] [Indexed: 02/05/2023] Open
Abstract
Methylenetetrahydrofolate reductase (MTHFR) is an enzyme that plays a crucial role as a methyl-group donor in demethylation of homocysteine. The aim of this systematic review and meta-analysis was to study the relationship between MTHFR gene polymorphism and metabolic syndrome (MS). We used search engines and databases such as Science Direct, Google Scholar, Embase, Cochrane Library, and PubMed to identify eligible studies up to 2018. The articles were studied based on keywords including MTHFR, mutation, variant, and polymorphism in combination with MS. Data was analyzed using Comprehensive Meta-Analysis version 2.2.064 software. After extracting the data from seven articles, the total number of subjects was 1280 in the patient group and 1374 in the control group. The odds ratio was estimated to be 1.078 for the allele model of T vs. C (95% confidence interval [CI]: 1.626-0.715), 1.157 for the allele model of CC vs. CT (95% CI: 0.829-1.615), 1.020 for the allele model of CT + TT vs. CC (95% CI: 1.611-0.646) and 0.799 for the allele model of TT vs. CC + CT (95% CI: 1.185- 0.539). As well, the results showed no statistically significant correlation between polymorphism genotypes of the MTHFR gene and MS (P<0.05). In general, this study showed that the presence of C677T polymorphism in the MTHFR gene has no effect on the incidence of MS.
Collapse
Affiliation(s)
- Soheil Azizi
- Department of Laboratory Sciences, Faculty of Paramedicine, Mazandaran University of Medical Sciences, Sari, Iran
| | - Amir Shamshirian
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Reza Alizadeh-Navaei
- Gastrointestinal Cancer Research Center, Mazandaran University of Medical Sciences, Sari, Iran
| | - Hamed Jafarpour
- Student Research Committee, Mazandaran University of Medical Sciences, Sari, Iran
| | - Zatollah Asemi
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Kashan University of Medical Sciences, Kashan, Iran
| | - Omid Reza Tamtaji
- Physiology Research Center, Kashan University of Medical Sciences, Kashan, Iran
| | - Mohammad Sadegh Vaziri
- Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
| | - Reza Homayounfar
- Non-Communicable Disease Research Center, Fasa University of Medical Sciences, Fasa, Iran
| | | | - Reza Alipoor
- Student Research Committee, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
- Non-Communicable Disease Research Center, Fasa University of Medical Sciences, Fasa, Iran
- Correspondence to: Reza Alipoor, Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran Telephone Number: +989174462124 Email Address:
| |
Collapse
|
8
|
Fu L, Li YN, Luo D, Deng S, Hu YQ. Plausible relationship between homocysteine and obesity risk via MTHFR gene: a meta-analysis of 38,317 individuals implementing Mendelian randomization. Diabetes Metab Syndr Obes 2019; 12:1201-1212. [PMID: 31413611 PMCID: PMC6662519 DOI: 10.2147/dmso.s205379] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 05/31/2019] [Indexed: 12/17/2022] Open
Abstract
OBJECTIVE Numerous studies have explored the role of methylenetetrahydrofolate reductase gene (MTHFR) C677T polymorphism and homocysteine (Hcy) concentration in obesity, but the results are inconsistent. Hence, we performed a meta-analysis implementing Mendelian randomization approach to test the assumption that the increased Hcy concentration is plausibly related to the elevated risk of obesity. METHODS Eligible studies were selected based on several inclusion and exclusion criteria. Correlations between MTHFR C677T and obesity risk, MTHFR C677T and Hcy concentration in obesity, Hcy concentration, and obesity were estimated by ORs, effect size and standard mean difference with their corresponding 95% CIs, respectively. Furthermore, Mendelian randomization analysis was performed to estimate the relationship between Hcy level and obesity. RESULTS Consequently, this meta-analysis implemented with Mendelian randomization approach was conducted among 8,622 cases and 29,695 controls. The results indicated that MTHFR C677T is associated with an increased risk of obesity (for T vs C: OR=1.06, 95% CI=1.02-1.10; for TT vs CC: OR=1.13, 95% CI=1.03-1.24). Moreover, in obese subjects, the pooled Hcy concentration in individuals of TT genotype was 2.91 mmol/L (95% CI: 0.27-5.55) higher than that in individuals of CC genotype. Furthermore, the pooled Hcy concentration in subjects with obesity was 0.74 mmol/L (95% CI: 0.36-1.12) higher than that in controls. The evaluated plausible OR associated with obesity was 1.23 for 5 μmol/L Hcy level increase. CONCLUSIONS Through this meta-analysis, we emphasize a strong relationship between Hcy level and obesity by virtue of MTHFR C677T polymorphism.
Collapse
Affiliation(s)
- Liwan Fu
- State Key Laboratory of Genetic Engineering, Institute of Biostatistics, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
| | - Ya-nan Li
- State Key Laboratory of Genetic Engineering, Institute of Biostatistics, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
| | - Dongmei Luo
- State Key Laboratory of Genetic Engineering, Institute of Biostatistics, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
- Department of Information and Computing Science, School of Mathematics and Physics, Anhui University of Technology, Maanshan, Anhui, People’s Republic of China
| | - Shufang Deng
- State Key Laboratory of Genetic Engineering, Institute of Biostatistics, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
| | - Yue-Qing Hu
- State Key Laboratory of Genetic Engineering, Institute of Biostatistics, School of Life Sciences, Fudan University, Shanghai, People’s Republic of China
- Shanghai Center for Mathematical Sciences, Fudan University, Shanghai, People’s Republic of China
- Correspondence: Yue-Qing HuState Key Laboratory of Genetic Engineering, Institute of Biostatistics, School of Life Sciences, Fudan University, 2005, Songhu Road, Shanghai200438, People’s Republic of ChinaTel +86 21 3124 6718Fax +86 21 3124 6381Email
| |
Collapse
|
9
|
Borai IH, Soliman AF, Ahmed HM, Ahmed GF, Kassim SK. Association of MTHFR C677T and ABCA1 G656A polymorphisms with obesity among Egyptian children. GENE REPORTS 2018. [DOI: 10.1016/j.genrep.2018.03.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
|
10
|
Yadav DK, Shrestha S, Lillycrop KA, Joglekar CV, Pan H, Holbrook JD, Fall CH, Yajnik CS, Chandak GR. Vitamin B 12 supplementation influences methylation of genes associated with Type 2 diabetes and its intermediate traits. Epigenomics 2017; 10:71-90. [PMID: 29135286 DOI: 10.2217/epi-2017-0102] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
AIM To investigate the effect of B12 and/or folic acid supplementation on genome-wide DNA methylation. METHODS We performed Infinium HumanMethylation450 BeadChip (Zymo Research, CA, USA) assay in children supplemented with B12 and/or folic acid (n = 12 in each group) and investigated the functional mechanism of selected differentially methylated loci. RESULTS We noted significant methylation changes postsupplementation in B12 (589 differentially methylated CpGs and 2892 regions) and B12 + folic acid (169 differentially methylated CpGs and 3241 regions) groups. Type 2 diabetes-associated genes TCF7L2 and FTO; and a miRNA, miR21 were further investigated in another B12-supplementation cohort. We also demonstrate that methylation influences miR21 expression and FTO, TCF7L2, CREBBP/CBP and SIRT1 are direct targets of miR21-3p. CONCLUSION B12 supplementation influences regulation of several metabolically important Type 2 diabetes-associated genes through methylation of miR21. Hence, our study provides novel epigenetic explanation for the association between disordered one carbon metabolism and risk of adiposity, insulin resistance and diabetes and has translational potential.
Collapse
Affiliation(s)
- Dilip K Yadav
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular & Molecular Biology, Hyderabad, Telangana, 500 007, India
| | - Smeeta Shrestha
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular & Molecular Biology, Hyderabad, Telangana, 500 007, India.,Building No 7, School of Basic & Applied Sciences, Dayananda Sagar University, Shavige Malleshwara Hills, Kumaraswamy Layout, Bangalore 560 078, Karnataka, India
| | - Karen A Lillycrop
- Research Centre for Biological Sciences, Institute of Developmental Sciences, Southampton General Hospital, Southampton, SO16 6 YD, UK
| | - Charu V Joglekar
- Diabetes Unit, King Edward Memorial Hospital & Research Centre, Rasta Peth, Pune, Maharashtra, 411 011, India
| | - Hong Pan
- Singapore Institute for Clinical Sciences, A*STAR, Brenner Centre for Molecular Medicine, 30 Medical Drive, 119521, Singapore
| | - Joanna D Holbrook
- Singapore Institute for Clinical Sciences, A*STAR, Brenner Centre for Molecular Medicine, 30 Medical Drive, 119521, Singapore.,Human Development & Health Academic Unit, University of Southampton & National Institute for Health Research Southampton Biomedical Research Centre, University of Southampton & University Hospital Southampton NHS Foundation Trust, Tremona Road, Southampton, SO16 6 YD, UK
| | - Caroline Hd Fall
- MRC Lifecourse Epidemiology Unit, University of Southampton, Southampton General Hospital, Southampton, SO16 6 YD, UK
| | - Chittaranjan S Yajnik
- Diabetes Unit, King Edward Memorial Hospital & Research Centre, Rasta Peth, Pune, Maharashtra, 411 011, India
| | - Giriraj R Chandak
- Genomic Research on Complex Diseases (GRC Group), CSIR-Centre for Cellular & Molecular Biology, Hyderabad, Telangana, 500 007, India.,Adjunct Faculty, Human Genetics Unit, Genome Institute of Singapore, Biopolis, 138672, Singapore
| |
Collapse
|
11
|
Folate and vitamin B12 status is associated with insulin resistance and metabolic syndrome in morbid obesity. Clin Nutr 2017; 37:1700-1706. [PMID: 28780990 DOI: 10.1016/j.clnu.2017.07.008] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2017] [Revised: 06/24/2017] [Accepted: 07/06/2017] [Indexed: 12/29/2022]
Abstract
BACKGROUND Low vitamin B12 and high folate during pregnancy are associated with visceral obesity and insulin resistance in offspring. In the general population, high folate exacerbates the increase of methylmalonic acid, a marker of vitamin B12 deficiency. However, the influence of vitamin B12 and folate and their related markers on insulin resistance and metabolic syndrome remains unknown in severe obesity. AIM To evaluate the influence of vitamin B12 and folate on HOMA-IR and components of metabolic syndrome in severe obesity. METHODS 278 consecutive obese patients were assessed prospectively for HOMA-IR, red blood cell (RBC) folates, homocysteine and methylmalonic acid. We compared the associations with the components of metabolic syndrome during the preoperative multidisciplinary evaluation (period-1) and before bariatric surgery (period-2). RESULTS The HOMA-IR was higher in patients with highest tertile of RBC and either lowest tertile of plasma B12 or highest tertile of MMA (p < 0.034 and 0.011, respectively). Lg HOMA-IR was negatively correlated with Lg homocysteine (p < 0.0001) and positively correlated with Lg serum folate (p < 0.001). The independent predictors for HOMA-IR at period 2 were either BMI and homocysteine (model 1 without serum folate, p = 0.010 and p = 0.002, respectively) or BMI and MMA (model 2 without homocysteine, p = 0.030 and p = 0.004, respectively). Age and RBC folate remained independently associated with the number of metabolic syndrome components (p = 0.006 and 0.020, respectively). CONCLUSIONS RBC folate, homocysteine, and MMA predict HOMA-IR in severe obesity. Our findings challenge the benefit of folate fortified food in severe obesity, in particular in patients with a deficit of vitamin B12. The cohort study was registered at clinicaltrials.gov as NCT02663388.
Collapse
|
12
|
Kheradmand M, Maghbooli Z, Salemi S, Sanjari M. Associations of MTHFR C677T polymorphism with insulin resistance, results of NURSE Study (Nursing Unacquainted Related Stress Etiologies). J Diabetes Metab Disord 2017; 16:22. [PMID: 28540283 PMCID: PMC5441014 DOI: 10.1186/s40200-017-0303-9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2016] [Accepted: 05/16/2017] [Indexed: 11/18/2022]
Abstract
Background The insulin resistance syndrome is one of the major contributors of metabolic syndrome, diabetes Type 2 and atherosclerotic cardiovascular disease. A common mutation (677C to T; Ala to Val) in the methylenetetrahydrofolate reductase (MTHFR) gene is associated with decreased specific MTHFR activity and elevation of the homocysteine. The aim of this study is investigation of association between MTHFR 677C > T polymorphism with insulin resistance by using HOMA (Homeostasis Model Assessment) index in nurses who are potentially prone to develop insulin resistance because of unfavorable effects of shift work. Method Nursing Unacquainted Related Stress Etiologies Study (Nurse Study) was conducted in five different educational hospitals of Tehran University of Medical Science (TUMS). The nurses aged 22–57 who have been referred by the matron were recruited. A self-administered questionnaire was completed. Anthropometric measurements including weight, height, waist and hip circumference in addition to blood pressure were measured. Insulin resistance and Insulin sensitivity were measured using the homeostatic model assessment (HOMA) and quantitative insulin sensitivity check index (QUICKI) respectively. The detection of MTHFR C677T polymorphism in exon four of MTHFR gene was performed by polymerase chain reaction–restriction fragment length polymorphism (PCR–RFLP) analysis using HINFI restriction enzyme digestion. Result A total of 273 subjects were recruited in the study. CT genotype were detected in 51.6% (129) subjects and CC and TT genotype were seen in 9.2% (25) and 35.2% (96) subjects respectively. Participants with TT genotype (9.65 ± 4.00) have significantly lower insulin level than participants with CT genotype (14.12 ± 15.34) (p-value: 0.01). The same significant difference was observed for HOMA index (p-value: 0.03). Result showed that HOMA is lower in subjects who are taking supplements. Conclusion Result of this study showed subjects with TT genotype had significantly lower HOMA compare to CT genotype and the same pattern was seen for insulin level. We also found subjects taking supplement have lower HOMA compared to others regardless of their genotype.
Collapse
Affiliation(s)
- Motahareh Kheradmand
- Health Science Research Center, Mazandaran University of Medical Science, Sari, Iran
| | - Zhila Maghbooli
- Osteoporosis Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sedigheh Salemi
- School of Nursing and Midwifery, Iran University of Medical Sciences, Tehran, Iran
| | - Mahnaz Sanjari
- Diabetes Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.,Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| |
Collapse
|
13
|
Dehkordi EH, Sattari F, Khoshdel A, Kasiri K. Effect of folic acid and metformin on insulin resistance and inflammatory factors of obese children and adolescents. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2016; 21:71. [PMID: 27904616 PMCID: PMC5122245 DOI: 10.4103/1735-1995.189669] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2015] [Revised: 11/29/2015] [Accepted: 05/25/2016] [Indexed: 12/15/2022]
Abstract
Background: Considering the increasing trend of obesity, especially in developing countries such as Iran, and the role of inflammatory factors and insulin resistance (IR) in the occurrence of obesity-related complications as well as the safety of some agents such as folic acid and metformin, this clinical trial was designed to investigate the effect of metformin and folic acid on inflammatory factors and IR among obese children. Materials and Methods: In this randomized, double-blind, controlled clinical trial study, sixty obese children aged 6–12 years were enrolled. Selected obese children were randomly allocated in two interventional (1 mg/daily folic acid or 1000 mg metformin for 8 weeks) groups. Biochemical measurements including homeostasis model assessment of IR (HOMA-IR), homocysteine (Hcy), tumor necrosis factor-alpha (TNF-α), interleukin-6 (IL-6), and interleukin-8 (IL-8) were measured between and within the groups before and after trial. Results: In each group, thirty obese children were studied. The groups were age- and sex-matched. After folic acid and metformin administration, mean of Hcy, HOMA-IR, TNF-α, and IL-8 decreased significantly (P < 0.05). IL-6 decreased significantly after folic acid use (P < 0.05). Conclusion: The findings of this trial indicated that both metformin and folic acid could decrease IR and level of Hcy in obese children and adolescents. The effectiveness of metformin on IR was more significant than folic acid. Regarding the effectiveness of the two studied agents on inflammatory factors, it is suggested that the role of folic acid was superior to metformin. It is suggested that metformin is a proper agent for obese children with IR and folic acid is an appropriate supplement for obese children with increased inflammatory factors.
Collapse
Affiliation(s)
- Elham Hashemi Dehkordi
- Department of Pediatrics Endocrinology, Shahrekord University of Medical Sciences, Shahrekord, Iran; Department of Pediatric Endocrinology, Child Growth and Development Research Center, Research Institute for Primordial Prevention of Non-communicable Disease, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Farnaz Sattari
- School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Abolfazl Khoshdel
- Department of Pediatrics Infectious Diseases, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Karamali Kasiri
- Department of Pediatrics Gastrology, Shahrekord University of Medical Sciences, Shahrekord, Iran
| |
Collapse
|
14
|
Fan S, Yang B, Zhi X, Wang Y, Wei J, Zheng Q, Sun G. Interactions of Methylenetetrahydrofolate Reductase C677T Polymorphism with Environmental Factors on Hypertension Susceptibility. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2016; 13:ijerph13060601. [PMID: 27322299 PMCID: PMC4924058 DOI: 10.3390/ijerph13060601] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2016] [Revised: 06/13/2016] [Accepted: 06/14/2016] [Indexed: 02/08/2023]
Abstract
Hypertension is considered to be the result of genes, environment, and their interactions. Among them age, sex, tobacco use, alcohol consumption, and being overweight/obesity are well documented environmental determinants, and methylenetetrahydrofolate reductase (MTHFR) C677T polymorphism is nominated as a potential genetic candidate. However, the synergistic effect of the MTHFR C677T polymorphism with these environmental factors on the risk of hypertension has received little attention. The aim of this study was to explore the associations of the MTHFR C677T polymorphism, environmental factors, and their interactions with hypertension predisposition in a Northern Chinese Han population. A total of 708 participants were enrolled in the study. The genotypes of the MTHFR C677T were determined by a TaqMan assay. We found that participants of an older age, being overweight/obesity, with a smoking habit, drinking habit, or carrying the 677T allele were at an increased risk of hypertension. Additionally, there existed marginally significant interactions of the polymorphism with age and overweight/obesity. However, future large, well-designed studies in Chinese and other populations, as well as mechanistic studies, are still needed to validate our findings, especially considering that the interactions observed in our study were only marginally significant.
Collapse
Affiliation(s)
- Shujun Fan
- Environment and Non-Communicable Disease Research Center, School of Public Health, China Medical University, Shenyang 110013, China.
| | - Boyi Yang
- Guangzhou Key Laboratory of Environmental Pollution and Health Risk Assessment, Department of Preventive Medicine, School of Public Health, Sun Yat-sen University, Guangzhou 510080, China.
| | - Xueyuan Zhi
- Environment and Non-Communicable Disease Research Center, School of Public Health, China Medical University, Shenyang 110013, China.
| | - Yanxun Wang
- Division of Molecular Preventive Medicine, Shanghai Institute of Targeted Therapy and Molecular Medicine, Shanghai 200433, China.
| | - Jian Wei
- Brain Disease Center, Tianjin Dagang Oil Field General Hospital, Tianjin 300280, China.
| | - Quanmei Zheng
- Environment and Non-Communicable Disease Research Center, School of Public Health, China Medical University, Shenyang 110013, China.
| | - Guifan Sun
- Environment and Non-Communicable Disease Research Center, School of Public Health, China Medical University, Shenyang 110013, China.
| |
Collapse
|
15
|
Dehkordi EH, Sedehi M, Shahraki ZG, Najafi R. Effect of folic acid on homocysteine and insulin resistance of overweight and obese children and adolescents. Adv Biomed Res 2016; 5:88. [PMID: 27274503 PMCID: PMC4879854 DOI: 10.4103/2277-9175.182219] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 05/20/2015] [Indexed: 12/17/2022] Open
Abstract
Background: Considering the increasing trend of childhood obesity and subsequent burden of the disease in Iran and other countries and importance of early life intervention for achieving sustained effect on health of children and adolescents, this study aimed to investigate the effect of two different dose of folic acid on homocysteine (Hcy) level and insulin resistance of obese children. Materials and Methods: In this randomized, double-blind controlled clinical trial study, 60 obese and overweight children aged 5–12 years were enrolled. Selected obese children randomly allocated in two interventional (1 mg/day folic acid and 5 mg/day folic acid, for 8 weeks) and one control groups. Biochemical measurements including folic acid, Hcy, insulin and insulin resistance were measured between and within groups before and after trial. Results: In each group, 20 obese children were studied. The three groups were age and sex matched. After folic acid administration, mean of Hcy, insulin resistance and insulin decreased significantly in two groups which folic acid administrated with two different doses (P < 0.05). The reduction in studied biochemical variables was similar in two interventional groups (1 and 5 mg folic acid daily) (P > 0.05). Mean differences for Hcy, insulin resistance and insulin, in two intervention groups were significantly higher than the control group (P < 0.0001). Mean differences of Hcy, insulin resistance and insulin, in two intervention groups were not different significantly (P > 0.05). Conclusion: The findings of current trial showed that folic acid in two studied doses could be a safe and effective supplement for obese children to reduce Hcy level and insulin resistance, which consequently could prevent obesity-related complications including cardiovascular and metabolic disorders.
Collapse
Affiliation(s)
- Elham Hashemi Dehkordi
- Department of Pediatrics Endocrinology, Shahrekord University of Medical Sciences, Shahrekord, Iran; Department of Pediatrics Endocrinology, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Morteza Sedehi
- Department of Biostatistics, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Zohre Gholipour Shahraki
- Department of Pediatrics Endocrinology, School of Medicine, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Reza Najafi
- Department of Pediatrics Endocrinology, Isfahan University of Medical Sciences, Isfahan, Iran
| |
Collapse
|
16
|
Zhao LP, You T, Chan SP, Chen JC, Xu WT. Adropin is associated with hyperhomocysteine and coronary atherosclerosis. Exp Ther Med 2015; 11:1065-1070. [PMID: 26998038 DOI: 10.3892/etm.2015.2954] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2014] [Accepted: 11/23/2015] [Indexed: 12/29/2022] Open
Abstract
Homocysteine has been recognized as a risk factor for atherosclerosis and cardiovascular diseases. Adropin is a newly-identified energy homeostasis protein with a potential protective effect against coronary artery disease (CAD). This study attempted to measure the correlation between serum homocysteine and adropin levels in patients with CAD, and to ascertain how the two hormones could affect the severity of coronary atherosclerosis. A cohort of CAD patients who had undergone coronary angiography was prospectively recruited. The serum homocysteine and adropin levels of the patients were measured and the severity of coronary atherosclerosis was quantified with the SYNTAX score. The data were analyzed with a generalized structural equation model. In total, 170 consecutive patients were recruited with a mean serum homocysteine level of 15.9±8.3 µmol/l, and 76 (44.7%) patients were identified as hyperhomocysteinemic with a serum homocysteine level >15 µmol/l. Serum homocysteine level was found to be significantly negatively correlated with serum adropin level (r=-0.169, P=0.028). Patients with hyperhomocysteinemia had lower serum adropin levels and higher SYNTAX scores than patients without hyperhomocysteinemia. Further analysis with a generalized structural equation model showed that adropin was significantly associated with hyperhomocysteinemia (adjusted odds ratio: 0.95, 95% confidence interval: 0.93 to 0.98; P=0.002), which in turn was significantly associated with the SYNTAX score (coefficient: 4.71, 95% confidence interval: 1.39 to 8.03; P=0.005). In conclusion, the serum homocysteine level was inversely correlated with the serum adropin level in patients with CAD. A low serum adropin level was associated with hyperhomocysteinemia and more severe coronary atherosclerosis, as reflected by a higher SYNTAX score.
Collapse
Affiliation(s)
- Liang-Ping Zhao
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Tao You
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Siew-Pang Chan
- Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117597, Republic of Singapore; Cardiovascular Research Institute, National University Heart Centre Singapore, National University Health System, Singapore 119228, Republic of Singapore; Department of Mathematics and Statistics, School of Engineering and Mathematical Sciences, Faculty of Engineering, Technology and Science, La Trobe University, Melbourne, Victoria 3086, Australia
| | - Jian-Chang Chen
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| | - Wei-Ting Xu
- Department of Cardiology, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215004, P.R. China
| |
Collapse
|
17
|
Are MTHFR C677T and MTRR A66G Polymorphisms Associated with Overweight/Obesity Risk? From a Case-Control to a Meta-Analysis of 30,327 Subjects. Int J Mol Sci 2015; 16:11849-63. [PMID: 26016497 PMCID: PMC4490418 DOI: 10.3390/ijms160611849] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2015] [Accepted: 05/15/2015] [Indexed: 12/18/2022] Open
Abstract
Several studies have examined the associations of methylenetetrahydrofolate reductase (MTHFR) C677T and methionine synthase reductase (MTRR) A66G polymorphisms with being overweight/obesity. However, the results are still controversial. We therefore conducted a case-control study (517 cases and 741 controls) in a Chinese Han population and then performed a meta-analysis by combining previous studies (5431 cases and 24,896 controls). In our case-control study, the MTHFR C677T polymorphism was not significantly associated with being overweight/obesity when examining homozygous codominant, heterozygous codominant, dominant, recessive and allelic genetic models. The following meta-analysis confirmed our case-control results. Heterogeneity was minimal in the overall analysis, and sensitivity analyses and publication bias tests indicated that the meta-analytic results were reliable. Similarly, both the case-control study and meta-analysis found no significant association between the MTRR A66G polymorphism and being overweight/obesity. However, sensitivity analyses showed that the associations between the MTRR A66G polymorphism and being overweight/obesity became significant in the dominant, heterozygous codominant and allelic models after excluding our case-control study. The results from our case-control study and meta-analysis suggest that both of the two polymorphisms are not associated with being overweight/obesity. Further large-scale population-based studies, especially for the MTRR A66G polymorphism, are still needed to confirm or refute our findings.
Collapse
|
18
|
Sypniewska G. Laboratory assessment of cardiometabolic risk in overweight and obese children. Clin Biochem 2015; 48:370-6. [DOI: 10.1016/j.clinbiochem.2014.12.024] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2014] [Revised: 12/23/2014] [Accepted: 12/24/2014] [Indexed: 01/22/2023]
|
19
|
Zhang D, Leung PS. Potential roles of GPR120 and its agonists in the management of diabetes. DRUG DESIGN DEVELOPMENT AND THERAPY 2014; 8:1013-27. [PMID: 25114508 PMCID: PMC4122337 DOI: 10.2147/dddt.s53892] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Free fatty acids (FFAs) serve not only as nutrients that provide energy but also as extracellular signaling molecules that manipulate intracellular physiological events through FFA receptors (FFARs) such as FFAR4. FFAR4 is also known as G-protein coupled receptor 120 (GPR120). The main role of GPR120 is to elicit FFA regulation on metabolism homeostasis. GPR120 agonism correlates with prevention of the occurrence and development of metabolic disorders such as obesity and diabetes. GPR120 activation directly or indirectly inhibits inflammation, modulates hormone secretion from the gastrointestinal tract and pancreas, and regulates lipid and/or glucose metabolism in adipose, liver, and muscle tissues, which may help prevent obesity and diabetes. This review summarizes recent advances in physiological roles of GPR120 in preventing insulin resistance and protecting pancreatic islet function, and examines how resident GPR120 in the pancreas may be involved in modulating pancreatic islet function.
Collapse
Affiliation(s)
- Dan Zhang
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| | - Po Sing Leung
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong
| |
Collapse
|
20
|
Vitamin B12 serostatus in Colombian children and adult women: results from a nationally representative survey. Public Health Nutr 2014; 18:836-43. [PMID: 24969611 DOI: 10.1017/s1368980014001141] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Vitamin B12 deficiency is associated with many adverse health outcomes and is highly prevalent worldwide. The present study assesses the prevalence of vitamin B12 deficiency and marginal deficiency in Colombian children and women and examines the sociodemographic correlates of serum vitamin B12 concentrations in these groups. DESIGN Cross-sectional, nationally representative survey. SETTING Colombia. SUBJECTS Children <18 years old (n 7243), pregnant women (n 1781), and non-pregnant women 18-49 years old (n 499). RESULTS The overall prevalence of vitamin B12 deficiency (serum vitamin B12<148 pmol/l) and marginal deficiency (serum vitamin B12=148-221 pmol/l) was, respectively, 6.6 % (95 % CI 5.2%, 8.3%) and 22.5% (95% CI 21.1%, 23.9%). Pregnant women had the highest prevalence of deficiency (18.9 %; 95 % CI 16.6 %, 21.5 %) compared with non-pregnant adult women (18.5%; 95% CI 4.4%, 53.1%) and children (2.8 %; 95 % CI 2.3 % %, 3.3 %). In multivariable analyses among children, mean serum vitamin B12 was positively associated with female sex (12 pmol/l higher compared with males; P=0.004), secondary or higher education of the household head (12 pmol/l higher compared with primary or less; P=0.009) and food security (21 pmol/l higher compared with severe food insecurity; P=0.003). In multivariable analyses among pregnant women, mean serum vitamin B12 was positively associated with education of the household head and inversely associated with living in the National territories, Eastern or Pacific regions. CONCLUSIONS The prevalence of vitamin B12 deficiency and marginal deficiency in Colombian women and children is substantial. The burden falls largely on adult women, those with lowest education and those living in the poorest, most rural regions of the country.
Collapse
|
21
|
Ozguven I, Ersoy B, Ozguven A, Ozkol M, Onur E. Factors affecting carotid intima media thickness predicts early atherosclerosis in overweight and obese adolescents. Obes Res Clin Pract 2013; 4:e1-e82. [PMID: 24345625 DOI: 10.1016/j.orcp.2009.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/15/2009] [Revised: 06/15/2009] [Accepted: 06/16/2009] [Indexed: 11/24/2022]
Abstract
SUMMARY OBJECTIVE Aims of this study were to compare serum leptin levels, atherosclerotic markers and carotid intima media thickness (IMT) among the overweight, obese and normal weight healthy adolescents and to investigate the association of carotid IMT with leptin and atherosclerotic markers in adolescence. METHODS Seventy obese-overweight adolescents (27 of them obese, 43 of them overweight) and 72 two normal weight adolescents aged 14-18 years were included in this study. Leptin and homocysteine levels and lipid profiles were determined and carotid IMT were measured in all adolescents. Subjects were evaluated as obese-overweight and normal weight and obese, overweight and normal weight. RESULTS Carotid IMT was significantly different among the overweight adolescents, obese adolescents and the control group (p < 0.001). Leptin levels were significantly higher in obese-overweight adolescents compared to the control group (p < 0.001). Apolipoprotein (Apo) B levels were significantly higher in obese adolescents than the overweight ones and the control group (p < 0.016). There were significantly positive correlations of carotid IMT with leptin, homocysteine and Apo B levels (p < 0.05, r = 0.33, 0.28, 021, respectively). The factors associated with carotid IMT were leptin and ApoB levels (β = 0.632, p < 0.04, β = 0.264, p = 0.019, respectively). CONCLUSION Subclinical atherosclerosis determined by carotid IMT begins in overweight adolescents. Elevated leptin and Apo B levels are independent predictors of subclinical atherosclerosis. Leptin resistance, which is related to subclinical atherosclerosis, also begins in overweight adolescents. High Apo B levels, which promote development of atherosclerosis are more prominent in obese adolescents than other groups. For these reasons, all necessary precautions should be taken in overweight adolescents to prevent atherosclerosis as well as in obese adolescents.
Collapse
Affiliation(s)
- Isıl Ozguven
- Celal Bayar University, Medical School, Department of Clinical Biochemistry, Manisa, Turkey
| | - Betul Ersoy
- Celal Bayar University, Medical School, Department of Clinical Biochemistry, Manisa, Turkey.
| | - Aykan Ozguven
- Celal Bayar University, Medical School, Department of Clinical Biochemistry, Manisa, Turkey
| | - Mine Ozkol
- Celal Bayar University, Medical School, Department of Clinical Biochemistry, Manisa, Turkey
| | - Ece Onur
- Celal Bayar University, Medical School, Department of Clinical Biochemistry, Manisa, Turkey
| |
Collapse
|
22
|
Suano de Souza FI, D'Almeida V, Fonseca FLA, Hix S, Miranda R, Gomes de Torres Rossi R, Ribeiro R, Saccardo Sarni RO. Lack of association of homocysteine concentrations with oxidative stress, alterations in carotid intima media thickness and endothelial reactivity in prepubertal children. ANNALS OF NUTRITION AND METABOLISM 2013; 63:25-31. [PMID: 23881171 DOI: 10.1159/000350314] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2012] [Accepted: 02/28/2013] [Indexed: 11/19/2022]
Abstract
BACKGROUND AND AIMS Our purpose was to assess the presence of risk factors for cardiovascular diseases (alterations in the lipid profile, fasting glycaemia, high arterial pressure values, oxidative stress, increased intima media thickness and impaired endothelium-dependent vasodilation) in prepubertal children with elevated homocysteine (Hcy) levels. METHODS In a cross-sectional study, 35 children with Hcy levels ≥7.3 μmol/l were matched by gender and age with 29 children with Hcy levels ≤4.1 μmol/l. Our collected data included weight, height, waist circumference, systemic arterial pressure, lipid profile, fasting glycaemia and oxidative stress markers. A Doppler ultrasound was performed to measure the carotid intima media thickness and the endothelium-dependent vasodilation of the brachial artery. RESULTS There were no statistically significant differences between the groups regarding the lipid profile and fasting glycaemia, blood pressure or oxidative stress. Overweight and obesity (body mass index z-score > +1) were more frequent in the group with Hcy ≥7.3 μmol/l when compared to the group with Hcy ≤4.1 μmol/l [13/35 (37.1%) vs. 4/29 (13.8%); p = 0.035]. After adjusting for nutritional status, there were no differences in the intima media thickness and endothelium-dependent vasodilation between children with high and low Hcy levels. CONCLUSIONS Among the cardiovascular risk factors investigated in the present study, which was based on prepubertal children, only overweight and obesity were associated with increased Hcy concentrations (≥7.3 μmol/l).
Collapse
|
23
|
Park SB, Georgiades A. Changes in body composition predict homocysteine changes and hyperhomocysteinemia in Korea. J Korean Med Sci 2013; 28:1015-20. [PMID: 23853483 PMCID: PMC3708071 DOI: 10.3346/jkms.2013.28.7.1015] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2012] [Accepted: 04/30/2013] [Indexed: 11/20/2022] Open
Abstract
Cardiovascular disease (CVD) is the primary cause of death in Korea. Hyperhomocysteinemia confers an independent risk for CVD comparable to the risk of smoking and hyperlipidemia. The purpose of this study was to assess the effect of cardiovascular risk factors and body composition change on homocysteine (Hcy) levels in Korean men and women. The association between body composition and Hcy levels was investigated in a 2-yr prospective cohort study of 2,590 Koreans (mean age 45.5±9.6 yr). There were 293 cases of hyperhomocysteinemia (>14 µM/L) at follow-up. Increases in total body fat proportion and decreases in lean body mass (LBM) were significantly associated with increases in Hcy concentration after controlling for confounding factors. Further adjustments for behavioral factors showed that decreases in LBM were associated with Hcy increase. Decrease in LBM also predicted hyperhomocysteinemia at follow-up, after controlling for confounding factors. There was no significant association between change in body mass index (BMI) and Hcy concentrations over time. Hcy changes over time were related to change in LBM and body fat content, whereas BMI or weight change did not predict change in Hcy levels. Changes in ratio of LBM to total fat mass may contribute to hyperhomocysteinemia.
Collapse
Affiliation(s)
- Sat Byul Park
- Department of Family Practice and Community Health, Ajou University School of Medicine, Suwon, Korea
| | - Anastasia Georgiades
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC 27710, USA
| |
Collapse
|
24
|
Abstract
Considerable evidence has accrued that cardiovascular disease (CVD) has its beginnings during childhood, with some reports of endothelial damage occurring in early adolescence. Thus, early prevention and intervention on developing cardiometabolic risk factors is important. Presently, diet and exercise are strategic parts of any CVD prevention or treatment program. Although diet is important, the effects of exercise training or regular moderate-to-vigorous intensity physical activity go beyond simply modifying the traditional risk factors. For children, the majority of studies show that regular physical activity can lower elevated blood pressure, positively influence lipid profiles, reduce inflammation, and improve vascular functioning. These changes are most evident in children who exercise and lose weight. Despite these potential benefits of physical activity, not all studies on children have found positive effects of habitual physical activity on CVD risk factors. Reasons for these differences are discussed throughout this review. The literature also suggests that habitual physical activity, although meeting guidelines, may not be sufficient for all individuals to bring about changes; thus, to be an effective modality physical activity needs to increase beyond habitual levels or be of a moderate to vigorous intensity. This review provides recent evidence (since 2008) regarding the influence of physical activity on the cardiometabolic risk factors in children.
Collapse
Affiliation(s)
- Robert G. McMurray
- Departments of Exercise and Sport Science and Nutrition, University of North Carolina, Chapel Hill (RGM)
- Center for the Study of Sport and Exercise, Seattle University, Seattle, Washington (KSO)
| | - Kristin S. Ondrak
- Departments of Exercise and Sport Science and Nutrition, University of North Carolina, Chapel Hill (RGM)
- Center for the Study of Sport and Exercise, Seattle University, Seattle, Washington (KSO)
| |
Collapse
|
25
|
Bossenmeyer‐Pourié C, Pourié G, Koziel V, Helle D, Jeannesson E, Guéant J, Beck B. Early methyl donor deficiency produces severe gastritis in mothers and offspring through
N
‐homocysteinylation of cytoskeleton proteins, cellular stress, and inflammation. FASEB J 2013; 27:2185-97. [DOI: 10.1096/fj.12-224642] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Carine Bossenmeyer‐Pourié
- Institut National de la Santé et de la Recherche Médicale (INSERM)U954, Nutrition, Génétique et Exposition aux Risques EnvironnementauxVandœuvreFrance
| | - Grégory Pourié
- Institut National de la Santé et de la Recherche Médicale (INSERM)U954, Nutrition, Génétique et Exposition aux Risques EnvironnementauxVandœuvreFrance
| | - Violette Koziel
- Institut National de la Santé et de la Recherche Médicale (INSERM)U954, Nutrition, Génétique et Exposition aux Risques EnvironnementauxVandœuvreFrance
| | - Deborah Helle
- Institut National de la Santé et de la Recherche Médicale (INSERM)U954, Nutrition, Génétique et Exposition aux Risques EnvironnementauxVandœuvreFrance
| | - Elise Jeannesson
- Institut National de la Santé et de la Recherche Médicale (INSERM)U954, Nutrition, Génétique et Exposition aux Risques EnvironnementauxVandœuvreFrance
| | - Jean‐Louis Guéant
- Institut National de la Santé et de la Recherche Médicale (INSERM)U954, Nutrition, Génétique et Exposition aux Risques EnvironnementauxVandœuvreFrance
| | - Bernard Beck
- Institut National de la Santé et de la Recherche Médicale (INSERM)U954, Nutrition, Génétique et Exposition aux Risques EnvironnementauxVandœuvreFrance
| |
Collapse
|
26
|
da Silva NP, de Souza FIS, Pendezza AI, Fonseca FLA, Hix S, Oliveira AC, Sarni ROS, D'Almeida V. Homocysteine and cysteine levels in prepubertal children: association with waist circumference and lipid profile. Nutrition 2012; 29:166-71. [PMID: 23022121 DOI: 10.1016/j.nut.2012.05.015] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2012] [Revised: 05/20/2012] [Accepted: 05/30/2012] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To evaluate homocysteine and total cysteine levels in prepubertal children and to determine the association between these levels and obesity, increased waist circumference, glucose levels, and lipid profile alterations. METHODS Using a cross-sectional study, 677 prepubertal students 6 to 11 y old were assessed. The weight, height, and waist circumference of the students were measured. Laboratory analyses included triacylglycerols, total cholesterol and its fractions, glucose, vitamin B12, folate, homocysteine, and cysteine. Chi-square tests and logistic regression (forward-stepwise) were used for statistical analysis; the significance level was set at 5%. RESULTS The median age of the students was 8.9 y (6.5-11.5), and the prevalences of overweight and obesity were 90 in 677 (13.3%) and 81 in 677 (12.0%), respectively. An increase in waist circumference was observed in 180 of 677 children (26.6%). Inadequate levels of low-density lipoprotein cholesterol, triacylglycerols, and high-density lipoprotein cholesterol were found in 95 (14.0%), 129 (19.1%), and 179 (26.4%) of the 677 students, respectively. The median homocysteine and total cysteine plasma levels were 5.6 μmol/L (0.1-11.7) and 365.7 μmol/L (191.5-589.2), respectively. A multivariate analysis showed that children with a waist circumference above the 90th percentile (7.3 μmol/L) were 2.4 times (95% confidence interval 1.4-4.0) more likely to have increased homocysteine levels and that children with increased waist circumferences and those with high low-density lipoprotein cholesterol levels were 2.7 (95% confidence interval 1.6-4.6) and 2.1 (95% confidence interval 1.1-4.0) times more likely, respectively, to have total cysteine levels above the 90th percentile (445.0 μmol/L). CONCLUSION The association of abdominal obesity in prepuberty with levels of homocysteine and cysteine found in this study of a prepubertal population could be an early and independent predictor of cardiovascular risk.
Collapse
|
27
|
Zhang JF, Yao GY, Wu YH. Expression profiling based on coexpressed modules in obese prepubertal children. GENETICS AND MOLECULAR RESEARCH 2012; 11:3077-85. [PMID: 23007985 DOI: 10.4238/2012.august.31.5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The aim of this study was to identify related genes and the underlying molecular mechanisms in obese patients who show a series of clinical and metabolic abnormalities known as metabolic syndrome. We identified expression profiles through a coexpression network. In addition, a similarity matrix and expression modules were constructed based on domain and pathway enrichment analysis. The genes in module 1 were mainly involved in the metabolism of xenobiotics by cytochrome P450, aldosterone-regulated sodium reabsorption, and focal adhesion owing to the presence of aldo/ketoreductase, basic helix-loop-helix, von Willebrand factor, Frizzled-related domain, and other domains. The genes in module 3 may be involved in cell cycle (hsa04110) and DNA replication (hsa03030) pathways through mini-chromosome maintenance, serine/threonine protein kinase, the protein kinase domain, and other domains. We analyzed the published molecular mechanisms of obesity and found many genes and pathways that have not been given enough attention and require further confirmation.
Collapse
Affiliation(s)
- J F Zhang
- Department of Child Health Care, Shanghai Children's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | | | | |
Collapse
|
28
|
Common variants of homocysteine metabolism pathway genes and risk of type 2 diabetes and related traits in Indians. EXPERIMENTAL DIABETES RESEARCH 2011; 2012:960318. [PMID: 21960995 PMCID: PMC3179901 DOI: 10.1155/2012/960318] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 05/27/2011] [Revised: 07/26/2011] [Accepted: 08/01/2011] [Indexed: 02/08/2023]
Abstract
Hyperhomocysteinemia, a risk factor for cardiovascular disorder, obesity, and type 2 diabetes, is prevalent among Indians who are at high risk of these metabolic disorders. We evaluated association of common variants of genes involved in homocysteine metabolism or its levels with type 2 diabetes, obesity, and related traits in North Indians. We genotyped 90 variants in initial phase (2.115 subjects) and replicated top signals in an independent sample set (2.085 subjects). The variant MTHFR-rs1801133 was the top signal for association with type 2 diabetes (OR = 0.78 (95% CI = 0.67-0.92), P = 0.003) and was also associated with 2 h postload plasma glucose (P = 0.04), high-density lipoprotein cholesterol (P = 0.004), and total cholesterol (P = 0.01) in control subjects. These associations were neither replicated nor significant after meta-analysis. Studies involving a larger study population and different ethnic groups are required before ruling out the role of these important candidate genes in type 2 diabetes, obesity, and related traits.
Collapse
|
29
|
Gammon CS, von Hurst PR, Coad J, Kruger R, Stonehouse W. Vegetarianism, vitamin B12 status, and insulin resistance in a group of predominantly overweight/obese South Asian women. Nutrition 2011; 28:20-4. [PMID: 21835592 DOI: 10.1016/j.nut.2011.05.006] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Revised: 02/23/2011] [Accepted: 05/01/2011] [Indexed: 11/15/2022]
Abstract
OBJECTIVES Asian Indians are an at-risk group for vitamin B12 deficiency (because of vegetarianism) and insulin resistance (IR). Vegetarianism and consequent vitamin B12 deficiency may be associated with IR. This study aimed to describe the vitamin B12 status of predominantly overweight/obese women of South Asian origin living in Auckland and to correlate serum vitamin B12 and vegetarian status with IR as part of the larger Surya Study looking at health and lifestyle in this population. METHODS This was a cross-sectional study of 135 women at least 20 y of age who were not taking vitamin B supplements or medications that could affect vitamin B12 concentrations (serum vitamin B12 < 800 pmol/L). Data collection included serum vitamin B12, serum folate, measurements of IR (HOMA2-IR), and anthropometry. Vegetarian status was established for 124 subjects (90 non-vegetarians, 34 vegetarians). RESULTS Mean serum vitamin B12 was 227 pmol/L (95% confidence interval 210-245), serum folate was 19.1 nmol/L (18.0-20.2), and HOMA2-IR was 1.24 (1.13-1.36). Non-vegetarians had higher serum vitamin B12 levels (257 pmol/L, 235-281) than vegetarians (181 pmol/L, 159-207), P < 0.001. Vitamin B12 deficiency (<150 pmol/L) in vegetarians was 24% versus 9% in non-vegetarians. Non-vegetarians had increased body mass index (25.9 kg/m², 25.0-26.9, versus 23.9 kg/m², 22.6-25.3), waist circumference (81 ± 10.1 versus 75.8 ± 9.88 cm), and HOMA2-IR levels (1.30, 1.17-1.46, versus 1.00, 0.83-1.22). No correlation was found between serum vitamin B12 and HOMA2-IR. A significant positive correlation between non-vegetarian status and IR disappeared after controlling for body mass index. CONCLUSIONS This study population has a low serum vitamin B12 status, especially if vegetarian. The high rates of observed obesity may have overshadowed any other contributing factor to IR.
Collapse
Affiliation(s)
- Cheryl S Gammon
- Institute of Food, Nutrition and Human Health, Massey University, Auckland, New Zealand.
| | | | | | | | | |
Collapse
|
30
|
Methionine and protein metabolism in non-alcoholic steatohepatitis: evidence for lower rate of transmethylation of methionine. Clin Sci (Lond) 2011; 121:179-89. [PMID: 21446920 DOI: 10.1042/cs20110060] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Hepatic metabolism of methionine is the source of cysteine, the precursor of glutathione, the major intracellular antioxidant in the body. Methionine also is the immediate precursor of SAM (S-adenosylmethionine) the key methyl donor for phosphatidylcholine synthesis required for the export of VLDL (very-low-density lipoprotein) triacylglycerols (triglycerides) from the liver. We have examined the kinetics of methionine, its transmethylation and trans-sulfuration with estimates of whole body rate of protein turnover and urea synthesis in clinically stable biopsy-confirmed subjects with NASH (non-alcoholic steatohepatitis). Subjects with NASH were more insulin-resistant and had significantly higher plasma concentrations of usCRP (ultrasensitive C-reactive protein), TNFα (tumour necrosis factor α) and other inflammatory cytokines. There was no significant effect of insulin resistance and NASH on whole body rate of protein turnover [phenylalanine Ra (rate of appearance)] and on the rate of urea synthesis. The rates of methylation of homocysteine and transmethylation of methionine were significantly lower in NASH compared with controls. There was no difference in the rate of trans-sulfuration of methionine between the two groups. Enteric mixed nutrient load resulted in a significant increase in all the measured parameters of methionine kinetics. Heterozygosity for MTHFR (5,10-methylene-tetrahydrofolate reductase) (677C→T) did not have an impact on methionine metabolism. We speculate that, as a result of oxidant stress possibly due to high fatty acid oxidation, the activity of methionine adenosyltransferase is attenuated resulting in a lower rate of transmethylation of methionine and of SAM synthesis. These results are the first evidence for perturbed metabolism of methionine in NASH in humans and provide a rationale for the development of targeted intervention strategies.
Collapse
|
31
|
Abstract
Obesity is a pathological condition aggregating a substantial number of proatherogenic factors, such as insulin resistance, type 2 diabetes mellitus, dyslipidaemia and hypertension. In addition to these classic cardiometabolic risk factors, atherosclerosis may be aggravated by other non-classic factors, which are characterized as conditional, including homocysteine, fibrinogen, lipoprotein(a), LDL particle size and high-sensitivity CRP. Some of these biomarkers are disturbed in obesity because of a combination of dietary factors, hypertrophic adipose tissue, low-grade inflammation, insulin resistance and other parameters under investigation. For the reduction of these risk factors, weight loss exceeding 10-20% of the initial body weight is probably necessary, achieved through either conventional lifestyle measures or more drastic interventions such as bariatric surgery. It has been shown that certain well-balanced diets, such as the Mediterranean diet, constitute a means of improving in a concerted manner the levels of CRP, fibrinogen, homocysteine and small dense LDL particles, regardless of weight loss. The significance of considering these factors in weight management intervention is an issue that needs further investigation.
Collapse
Affiliation(s)
- T Tzotzas
- Department of Endocrinology, Diabetes andMetabolism, Panagia General Hospital,Thessaloniki, Greece.
| | | | | |
Collapse
|
32
|
Liu Z, Luo Y, Jeppesen PB, Gregersen S, Hermansen K. Amino acid-induced gene expression profiling in clonal β-cell line INS-1E cells. Diabetes Metab Res Rev 2011; 27:120-76. [PMID: 21294238 DOI: 10.1002/dmrr.1153] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND There is abundant evidence that glucotoxicity and lipotoxicity contribute to impaired β-cell function in type 2 diabetes. Interestingly, amino acid (AA) derangement is also a characteristic part of the diabetic state. The acute effects of AA on pancreatic β-cell function have been widely explored; however, to our knowledge, the chronic effects of AA, e.g. proline (Pro), homocysteine (Hcy), and leucine (Leu), on pancreatic β-cell function and integrity have not yet been studied. We aimed to investigate global alterations in β-cell gene expression after long-term exposure of clonal INS-1E cells to elevated level of specific AA in vitro. METHODS Global gene expression profiling was performed to characterize genes differently modified by Pro, Hcy, and Leu, respectively, in INS-1E cells. RESULTS Gene expression profiling revealed significant changes in INS-1E cell mRNAs involved in the control of several aspects of β-cell function, e.g. epigenetic regulation of gene expression, metabolism, innate and adaptive immune responses, cellular signalling, protein synthesis, apoptosis, and cellular stress response. After 72 h, INS-1E cells were differentially regulated (≥1.5- or ≤ -1.5-fold) by Pro (295 transcripts), Hcy (301 transcripts), and Leu (701 transcripts). It appears that Hcy effects changes opposite to those induced by Leu and/or Pro. CONCLUSIONS AA appears to participate in and to influence many physiological processes including those involved in cholesterol metabolism, immune responses, and oxidative phosphorylation. Whether such events promote the β-cell dysfunction and the β-cell failure in diabetes remains to be elucidated. Our data strongly indicate that AA elevation may take part in the progressive development of type 2 diabetes.
Collapse
Affiliation(s)
- Zhenping Liu
- Department of Endocrinology and Metabolism MEA, Aarhus University Hospital, Aarhus Sygehus THG, Tage-Hansens Gade 2, Aarhus C, Denmark
| | | | | | | | | |
Collapse
|
33
|
Papel de la homocisteína en la esteatosis hepática asociada al virus de la hepatitis C. Med Clin (Barc) 2011; 136:61-2. [DOI: 10.1016/j.medcli.2010.07.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2010] [Accepted: 07/20/2010] [Indexed: 11/17/2022]
|
34
|
Revenga-Frauca J, González-Gil EM, Bueno-Lozano G, De Miguel-Etayo P, Velasco-Martínez P, Rey-López JP, Bueno-Lozano O, Moreno LA. Abdominal fat and metabolic risk in obese children and adolescents. J Physiol Biochem 2010; 65:415-20. [PMID: 20358355 DOI: 10.1007/bf03185937] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2009] [Indexed: 01/23/2023]
Abstract
The aim of this study was to investigate fat distribution, mainly abdominal fat, and its relationship with metabolic risk variables in a group of 126 children and adolescents (60 males and 66 females) aged 5.0 to 14.9. According to IOTF criteria, 46 were classified as normal weight, 28 overweight and 52 obese. Weight, height, waist (WC) and hip circumferences were measured. The body mass index (BMI) was calculated. Total body fat, trunkal and abdominal fat were also assessed by dual energy x-ray absorptiometry (DXA). Glucose, insulin, HDL-Cholesterol, triglycerides (TG), ferritine, homocystein and C-reactive protein (CRP) were measured. Obesity status was related with insulin concentrations, CRP, TG and HDL. Obese patients had higher abdominal fat and higher CRP values than overweight and normal subjects. All markers of central body adiposity were related with insulin and lipid metabolism; however, they were not related with homocystein or ferritin. A simple anthropometric measurement, like waist circumference, seems to be a good predictor of the majority of the obesity related metabolic risk variables.
Collapse
Affiliation(s)
- J Revenga-Frauca
- Growth, Exercise, Nutrition and Development (GENUD) Research group, University of Zaragoza, Spain
| | | | | | | | | | | | | | | |
Collapse
|
35
|
Yu X, Huang Y, Hu Q, Ma L. Hyperhomocysteinemia stimulates hepatic glucose output and PEPCK expression. Acta Biochim Biophys Sin (Shanghai) 2009; 41:1027-32. [PMID: 20011977 DOI: 10.1093/abbs/gmp097] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Homocysteine is an intermediate in the sulfur amino acid metabolism. Recent studies suggested that there might be links between hyperhomocysteinemia and insulin resistance. In the present study, we investigated the effect of homocysteine on glucose metabolism. We demonstrated that the levels of insulin were significantly higher in mice with hyperhomocysteinemia than those in the normal mice after administration of glucose. The effect of insulin on glucose output was significantly blocked in the homocysteine-treated hepatocytes. In addition, the expression of phosphoenolpyruvate carboxykinase (PEPCK) gene was elevated in the liver of mice with hyperhomocysteinemia and primary mouse hepatocytes treated with homocysteine. The action of homocysteine was suppressed by H89, a protein kinase A (PKA) inhibitor. Thus, hyperhomocysteinemia may be considered as a risk factor that contributes to the development of insulin resistance with respect to elevated glucose output and upregulation of PEPCK, probably via the PKA pathway. Our study provides a novel mechanistic explanation for the development of insulin resistance in hyperhomocysteinemia.
Collapse
Affiliation(s)
- Xue Yu
- Department of Cardiology, Beijing Hospital, Beijing 100730, China
| | | | | | | |
Collapse
|
36
|
Varda NM, Gregoric A. Metabolic syndrome in the pediatric population: a short overview. Pediatr Rep 2009; 1:e1. [PMID: 21589817 PMCID: PMC3096028 DOI: 10.4081/pr.2009.e1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2009] [Revised: 05/05/2009] [Accepted: 05/15/2009] [Indexed: 02/06/2023] Open
Abstract
The metabolic syndrome (MS) in adults is defined as a concurrence of obesity, disturbed glucose and insulin metabolism, hypertension and dyslipidemia, and is associated with increased morbidity and mortality from cardiovascular diseases and type 2 diabetes. Studies now indicate that many of its components are also present in children and adolescents. Moreover, the clustering of these risk factors has been documented in some children, who are at increased cardiovascular risk in adulthood. The MS is highly prevalent among overweight children and adolescents. Identifying these children is important for early prevention and treatment of different components of the syndrome. The first-line treatment comprises lifestyle modification consisting of diet and exercise. The most effective tool for prevention of the MS is to stop the development of childhood obesity. The first attempt at consensus-based pediatric diagnostic criteria was published in 2007 by the International Diabetes Federation. Nevertheless, national prevalence data, based on uniform pediatric definition, protocols for prevention, early recognition and effective treatment of pediatric MS are still needed.The aim of this article is to provide a short overview of the diagnosis and treatment options of childhood MS, as well as to present the relationships between MS and its individual components.
Collapse
|
37
|
-Samak MA, Khuzaie R, Abu-Hashee M, Jaradeh M, Fawzi M. Relationship of Vitamin B12 Deficiency with Overweight in Male Jordanian Youth. ACTA ACUST UNITED AC 2008. [DOI: 10.3923/jas.2008.3060.3063] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
|
38
|
Fajcsak Z, Gabor A, Kovacs V, Martos E. The effects of 6-week low glycemic load diet based on low glycemic index foods in overweight/obese children--pilot study. J Am Coll Nutr 2008; 27:12-21. [PMID: 18460477 DOI: 10.1080/07315724.2008.10719670] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To evaluate the effectiveness of a 6-week low Glycemic Load (GL) diet intervention based on low Glycemic Index (GI) foods on body weight, body composition, metabolic risk factors and satiety in overweight/obese pre-pubertal children. METHODS Following a pediatric examination 8 healthy, average age 11 year old, Caucasian, pre-pubertal overweight/obese (BMI = 24, 7 +/- 3.8 kg/m(2)) children participated in the study. The Low GL diet intervention was based on the replacement of at least 50% of the high GI foods with Low-GI foods. The children with one of their parents participated in weekly nutrition consultations. Body composition, fasting glucose, insulin, cholesterol and triglyceride were measured before and after the study. Dietary changes were made based on weekly 4-day food-diaries. RESULTS Despite no change in body weight, there was a significant (p < 0.05) reduction in % body fat (29.4 +/- 4.2 vs. 25.4 +/- 5.3), Waist-to-Hip Ratio (WHR 0.87 +/- 0.053 vs. 0.86 +/- 0.05), decrease in self-reported hunger level (4.37 +/- 0.74 vs. 1.75 +/- 0.75) and the total number of risk factors (28 vs. 15). There was a strong negative correlation between fasting glucose and insulin levels at baseline and in the magnitude of change after the study (r = -0.93 and r = -0.85 respectively; p < 0.01). CONCLUSIONS A 6 week study demonstrated the practicality and effectiveness of this Low GL dietary approach. Despite of the unchanged body weight, Low GL diet consultations positively modified body fat content and cardiovascular risk factors in overweight or obese children.
Collapse
Affiliation(s)
- Zsuzsanna Fajcsak
- Semmelweis University, Faculty of Physical Education Sport Sciences, Budapest, Hungary.
| | | | | | | |
Collapse
|
39
|
Abstract
AbstractCoffee is a complex mixture of potentially active chemicals. It contains significant amounts of phenolic polymers, chlorogenic acid and also caffeine. Agricultural factors, roasting, blending, and brewing determine coffee’s chemical composition. Recent epidemiological studies suggest that habitual coffee consumption may help to prevent some chronic diseases including type 2 diabetes. Despite reports from the clinical trials of the effect of caffeine on decreasing insulin sensitivity, long-term prospective studies revealed that coffee may improve fasting glucose, glucose tolerance and insulin sensitivity as well. In the most recent publication habitual coffee drinkers have a lower total and cardiovascular mortality rate among diabetic subjects.
Collapse
|
40
|
Masaki T, Anan F, Anai M, Higuchi K, Tsubone T, Gotoh K, Chiba S, Katsuragi I, Tanaka K, Kakuma T, Yoshimatsu H. Hyperhomocysteinemia is associated with visceral adiposity in Japanese patients with type 2 diabetes mellitus. Diabetes Res Clin Pract 2007; 77:168-73. [PMID: 17291621 DOI: 10.1016/j.diabres.2006.12.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2006] [Revised: 11/13/2006] [Accepted: 12/25/2006] [Indexed: 11/16/2022]
Abstract
This study aims to investigate the relationship between the circulating level of homocysteine and body adiposity in Japanese patients with type 2 diabetes mellitus. We measured the body mass index (BMI), waist and hip circumferences, visceral and subcutaneous adiposities, visceral/subcutaneous (V/S) adiposity ratio, and insulin resistance as assessed by the Homeostasis Model Assessment (HOMA) index in patients with hyperhomocysteinemia. The study group consisted of 17 Japanese patients with type 2 diabetes and hyperhomocysteinemia (age: 62+/-10 years, mean+/-S.D.), and the control group consisted of 24 age-matched type 2 diabetes patients with normohomocysteinemia (60+/-11 years). The visceral adiposity, HOMA index, and V/S ratio were significantly higher in the hyperhomocysteinemia group than in the normohomocysteinemia group (P<0.05). In contrast, the BMI, hip circumference, and subcutaneous adiposity were similar between the two groups (P>0.1). Furthermore, multiple regression analysis showed that hyperhomocysteinemia was closely related to insulin resistance and visceral adiposity. Our results indicate that the presence of hyperhomocysteinemia in our population of Japanese patients with type 2 diabetes-associated insulin resistance was associated with increased visceral but not subcutaneous adiposity.
Collapse
Affiliation(s)
- Takayuki Masaki
- Department of Internal Medicine 1, Faculty of Medicine, Oita University, Hasama, Oita 879-5593, Japan.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Roblin X, Pofelski J, Zarski JP. [Steatosis, chronic hepatitis virus C infection and homocysteine]. ACTA ACUST UNITED AC 2007; 31:415-20. [PMID: 17483780 DOI: 10.1016/s0399-8320(07)89402-4] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Homocysteine, a sulfuric amino acid involved in methionine metabolism, belongs to the group of intracellular thiols. Hyperhomocysteinemia is frequent in the Caucasian population (more than 15%) and its role in vascular pathology has been clearly established. In hepatology, experimental data in transgenic mice deficient in homocysteine metabolism enzymes have shown the presence of severe liver steatosis with occasional steatohepatitis. In human beings, many studies have found a correlation between homocysteine and steatosis or even NASH. Some authors have suggested a discriminating threshold to differentiate simple steatosis from NASH. In chronic hepatitis C, preliminary data have shown that hyperhomocysteinemia is an independent risk factor for steatosis or even fibrosis. The physiopathological mechanism has now begun to be better understood. On one hand, there is a strong correlation between homocysteine and insulin resistance whatever its etiology. On the other hand, homocysteine has a direct effect on the liver, resulting in over expression of SREBP-1 and favouring steatosis. It stimulates proinflammatory cytokine secretion such as NF kappa B increasing the risk of NASH. Finally, homocysteine could increase the risk of fibrosis by stimulating TIMP 1. Moreover hepatitis C virus induces hypomethylation of STAT 1 and could decrease the antiviral activity of interferon. Results from in vitro studies have shown that the normalisation of STAT 1 methylation by bringing betaine and S Adenosyl Methionine (which belongs to homocysteine cycle) restores the antiviral activity of interferon. These data should be confirmed to evaluate the importance of homocysteine dosage in the diagnosis of NASH. Finally, treatment of hyperhomocysteinemia could have favourable consequences in steatopathies and HCV infection.
Collapse
Affiliation(s)
- Xavier Roblin
- Département d'Hépato-Gastroentérologie, CHU Michallon, Grenoble, France.
| | | | | |
Collapse
|
42
|
Patterson S, Flatt PR, McClenaghan NH. Major metabolic homocysteine-derivative, homocysteine thiolactone, exerts changes in pancreatic β-cell glucose-sensing, cellular signal transduction and integrity. Arch Biochem Biophys 2007; 461:287-93. [DOI: 10.1016/j.abb.2007.02.011] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2007] [Revised: 02/02/2007] [Accepted: 02/03/2007] [Indexed: 01/09/2023]
|
43
|
Im JA, Lee JW, Shim JY, Lee HR, Lee DC. Association between brachial-ankle pulse wave velocity and cardiovascular risk factors in healthy adolescents. J Pediatr 2007; 150:247-51. [PMID: 17307539 DOI: 10.1016/j.jpeds.2006.11.038] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2006] [Revised: 09/16/2006] [Accepted: 11/08/2006] [Indexed: 10/23/2022]
Abstract
OBJECTIVE To investigate the associations between cardiovascular risk factors and arterial stiffness, measured as brachial-ankle pulse wave velocity (baPWV), in healthy adolescents. STUDY DESIGN In this cross-sectional study, 178 male and 84 female adolescents, aged 12 to 18 years, were recruited. Total homocysteine levels, serum lipid profiles, high-sensitivity C-reactive protein (hs-CRP) levels, fasting glucose levels, fasting insulin levels, and baPWV were measured. RESULTS baPWV was significantly higher in male adolescents than in female adolescents. In both sex groups, baPWV was positively correlated with body mass index (BMI), waist circumference, waist-hip ratio, systolic and diastolic blood pressures, fasting insulin levels, homeostatic model assessment of insulin resistance, triglyceride levels, hs-CRP levels, and total homocysteine levels. In male adolescents, age, total cholesterol level, low-density lipoprotein cholesterol levels, and white blood cell counts were positively correlated with baPWV, and, in female adolescents, high-density lipoprotein cholesterol levels were negatively correlated with baPWV. In multivariate analysis, sex, mean blood pressure, BMI, and total homocysteine levels were found to be independent factors associated with baPWV. CONCLUSION Blood pressure, BMI, sex, and total homocysteine levels were independently associated with arterial stiffness, measured as baPWV, in healthy adolescents, suggesting that these risk factors may be associated with an increased risk of atherosclerosis in adolescents.
Collapse
Affiliation(s)
- Jee-Aee Im
- Department of Laboratory Medicine, MizMedi Hospital, Gangseo-Gu, Seoul, Korea
| | | | | | | | | |
Collapse
|
44
|
|
45
|
Bibliography. Current world literature. Growth and development. Curr Opin Endocrinol Diabetes Obes 2007; 14:74-89. [PMID: 17940424 DOI: 10.1097/med.0b013e32802e6d87] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
46
|
Surdacki A, Stochmal E, Szurkowska M, Bode-Böger SM, Martens-Lobenhoffer J, Stochmal A, Klecha A, Kawecka-Jaszcz K, Dubiel JS, Huszno B, Szybiński Z. Nontraditional atherosclerotic risk factors and extent of coronary atherosclerosis in patients with combined impaired fasting glucose and impaired glucose tolerance. Metabolism 2007; 56:77-86. [PMID: 17161229 DOI: 10.1016/j.metabol.2006.08.023] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2006] [Accepted: 08/30/2006] [Indexed: 01/16/2023]
Abstract
Partially inconsistent data exist on mutual relations between nontraditional atherosclerotic risk factors, including the magnitude of insulin resistance (IR), as well as on their relevance for atherogenesis in the metabolic syndrome. Subjects exhibiting combined impaired fasting glucose and impaired glucose tolerance (IFG/IGT) are exposed to an exceptionally high risk for atherogenesis and development of type 2 diabetes mellitus. Because of islet Beta-cell dysfunction, the usefulness of commonly used indices of IR is limited in IFG/IGT. Our aim was to assess the relationship between extent of angiographic coronary artery disease (CAD) and nontraditional atherosclerotic risk factors (including IR by a clamp-based golden standard method) in IFG/IGT. Fifty-three subjects (32 men, 21 women; mean age, 55 +/- 11 years) with stable angina, preserved left ventricular systolic function, and IFG/IGT were divided into 3 groups: group A (no coronary stenoses >50%, n = 22), group B (1-vessel CAD, n = 15), and group C (2/3-vessel CAD, n = 16). Insulin sensitivity was quantified by a hyperinsulinemic euglycemic clamp technique and expressed as M. M value, plasma homocysteine (Hcy) level, and asymmetric dimethyl-L-arginine (ADMA)/L-arginine ratio were independent determinants of CAD extent as shown by forward stepwise discriminant function analysis. Compared with group A (M = 32.7 +/- 9.3 micromol/kg fat-free mass [FFM] per minute; Hcy, 8.1 +/- 1.4 micromol/L), lower M and higher Hcy levels were found in group B (M = 16.9 +/- 8.2 micromol/kg FFM per minute, P < .001; Hcy, 11.2 +/- 2.9 micromol/L, P = .003) and C (M = 16.4 +/- 7.8 micromol/kg FFM per minute, P < .001; Hcy, 12.8 +/- 3.9 micromol/L, P < .001). The ADMA/L-arginine ratio was increased in group C (0.0078 +/- 0.0011) compared with group A (0.0063 +/- 0.0013, P = .03) and B (0.0058 +/- 0.0012, P = .01). Multivariate correlates (P < .05) of plasma Hcy concentrations were M (beta = -.34 +/- .12, P = .008), creatinine clearance (beta = -.23 +/- .10, P = .03) and fasting insulin (beta = .25 +/- .12, P = .04). This indicates an additive contribution of IR, plasma Hcy, and elevated ADMA/L-arginine ratio to the extent of angiographic CAD in combined IFG/IGT.
Collapse
Affiliation(s)
- Andrzej Surdacki
- 2nd Department of Cardiology, Jagiellonian University, 31-501 Cracow, Poland.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
47
|
Mudd SH, Brosnan JT, Brosnan ME, Jacobs RL, Stabler SP, Allen RH, Vance DE, Wagner C. Methyl balance and transmethylation fluxes in humans. Am J Clin Nutr 2007; 85:19-25. [PMID: 17209172 DOI: 10.1093/ajcn/85.1.19] [Citation(s) in RCA: 129] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Various questions have been raised about labile methyl balance and total transmethylation fluxes, and further discussion has been encouraged. This report reviews and discusses some of the relevant evidence now available. The fact that, if needed, labile methyl balance is maintained by methylneogenesis appears to be established, but several aspects of transmethylation remain uncertain: definitive measurements of the rate of total transmethylation in humans of both sexes on various diets and at various ages; the extent to which synthesis of phosphatidylcholine has been underestimated; and the relative contributions of the 2 pathways for the formation of sarcosine (ie, N-methylglycine). The available evidence indicates that the quantitatively most important pathways for S-adenosylmethionine-dependent transmethylation in mammals are the syntheses of creatine by guanidinoacetate methyltransferase, of phosphatidylcholine by phosphatidylethanolamine methyltransferase, and of sarcosine by glycine N-methyltransferase. Data presented in this report show that S-adenosylmethionine and methionine accumulate abnormally in the plasma of humans with glycine N-methyltransferase deficiency but not of those with guanidinoacetate N-methyltransferase deficiency or in the plasma or livers of mice devoid of phosphatidylethanolamine N-methyltransferase activity. The absence of such accumulations in the latter 2 conditions may be due to removal of S-adenosylmethionine by synthesis of sarcosine. Steps that may help clarify the remaining issues include the determination of the relative rates of synthesis of sarcosine, creatine, and phosphatidylcholine by rapid measurement of the rates of radiolabel incorporation into these compounds from L-[methyl-3H]methionine administered intraportally to an experimental animal; clarification of the intracellular hepatic isotope enrichment value during stable-isotope infusion studies to enhance the certainty of methyl flux estimates during such studies; and definitive measurement of the dietary betaine intake from various diets.
Collapse
Affiliation(s)
- S Harvey Mudd
- Laboratory of Molecular Biology, National Institute of Mental Health, Bethesda, MD 20892, USA.
| | | | | | | | | | | | | | | |
Collapse
|
48
|
Abstract
Systemic inflammation is present in children and adults with obesity. Inflammation associated with obesity appears to be central to the development of insulin resistance and atherosclerosis and may be important in the pathogenesis of other comorbid conditions. Although generally considered an inert energy storage tissue, white adipose tissue is a metabolically active organ. It produces a number of inflammatory cytokines and acute-phase reactants. Inflammation associated with obesity declines after weight loss and with exercise. It may also be possible to modify obesity-associated inflammation with medications, reducing comorbidities without weight loss. The study of inflammation in the context of excessive adipose tissue is central to understanding obesity and modifying its impact on patients.
Collapse
|