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Parekh T, Tsai M, Spiro S. Choline degradation in Paracoccus denitrificans: identification of sources of formaldehyde. J Bacteriol 2024; 206:e0008124. [PMID: 38501746 PMCID: PMC11025334 DOI: 10.1128/jb.00081-24] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 03/20/2024] Open
Abstract
Paracoccus denitrificans is a facultative methylotroph that can grow on methanol and methylamine as sole sources of carbon and energy. Both are oxidized to formaldehyde and then to formate, so growth on C1 substrates induces the expression of genes encoding enzymes required for the oxidation of formaldehyde and formate. This induction involves a histidine kinase response regulator pair (FlhSR) that is likely triggered by formaldehyde. Catabolism of some complex organic substrates (e.g., choline and L-proline betaine) also generates formaldehyde. Thus, flhS and flhR mutants that fail to induce expression of the formaldehyde catabolic enzymes cannot grow on methanol, methylamine, and choline. Choline is oxidized to glycine via glycine betaine, dimethylglycine, and sarcosine. By exploring flhSR growth phenotypes and the activities of a promoter and enzyme known to be upregulated by formaldehyde, we identify the oxidative demethylations of glycine betaine, dimethylglycine, and sarcosine as sources of formaldehyde. Growth on glycine betaine, dimethylglycine, and sarcosine is accompanied by the production of up to three, two, and one equivalents of formaldehyde, respectively. Genetic evidence implicates two orthologous monooxygenases in the oxidation of glycine betaine. Interestingly, one of these appears to be a bifunctional enzyme that also oxidizes L-proline betaine (stachydrine). We present preliminary evidence to suggest that growth on L-proline betaine induces expression of a formaldehyde dehydrogenase distinct from the enzyme induced during growth on other formaldehyde-generating substrates.IMPORTANCEThe bacterial degradation of one-carbon compounds (methanol and methylamine) and some complex multi-carbon compounds (e.g., choline) generates formaldehyde. Formaldehyde is toxic and must be removed, which can be done by oxidation to formate and then to carbon dioxide. These oxidations provide a source of energy; in some species, the CO2 thus generated can be assimilated into biomass. Using the Gram-negative bacterium Paracoccus denitrificans as the experimental model, we infer that oxidation of choline to glycine generates up to three equivalents of formaldehyde, and we identify the three steps in the catabolic pathway that are responsible. Our work sheds further light on metabolic pathways that are likely important in a variety of environmental contexts.
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Affiliation(s)
- Trusha Parekh
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | - Marcus Tsai
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
| | - Stephen Spiro
- Department of Biological Sciences, The University of Texas at Dallas, Richardson, Texas, USA
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Koga T, Inoue K, Hirayama F, Hiromura M, Fujii K, Ishii Y, Hirao-Suzuki M, Takeda S, Toda A, Soeda F. Dimethylglycine, a methionine metabolite, participates in the suppressive effect of methionine on 1-fluoro-2,4-dinitrobenzene-induced dermatitis. Biol Pharm Bull 2023. [PMID: 37183024 DOI: 10.1248/bpb.b23-00098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Allergic contact dermatitis (ACD) is a common skin disorder caused by contact with allergens. The optimal treatment for ACD is to avoid contact with allergens. However, in some cases, avoiding exposure is not possible when the allergens are unknown. Therefore, establishing treatment methods other than allergen avoidance is important. We previously reported that the continuous administration of methionine, an essential amino acid, in a mouse model of atopic dermatitis alleviated its symptoms. In the present study, we investigated the effect of methionine on a mouse model of ACD caused by 1-fluoro-2,4-dinitrobenzene (DNFB). Differences in the effect of methionine were observed in DNFB-induced ACD model mice based on the mouse strain used. This difference was attributed to the suppression of hepatic dimethylglycine (DMG) production, which is associated with the suppression of hepatic betaine-homocysteine methyltransferase (Bhmt) expression by ACD. Although we did not reveal the mechanism underlying DMG suppression, our study suggests the presence of interactions between the liver and skin in dermatitis, such as the regulation of hepatic metabolic enzyme expression in dermatitis and the alleviation of dermatitis symptoms by the hepatic metabolism status of DMG.
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Affiliation(s)
- Takayuki Koga
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy
| | - Kie Inoue
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy
| | - Fuka Hirayama
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy
| | - Makoto Hiromura
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy
| | - Kiyonaga Fujii
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy
| | - Yuji Ishii
- Division of Pharmaceutical Cell Biology, Graduate School of Pharmaceutical Sciences, Kyushu University
| | - Masayo Hirao-Suzuki
- Laboratory of Xenobiotic Metabolism and Environmental Toxicology, Faculty of Pharmaceutical Sciences, Hiroshima International University
| | - Shuso Takeda
- Laboratory of Molecular Life Sciences, Faculty of Pharmacy and Pharmaceutical Sciences, Fukuyama University
| | - Akihisa Toda
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy
| | - Fumio Soeda
- Department of Pharmaceutical Sciences, Daiichi University of Pharmacy
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Hu Y, Liu X, Ekpo MD, Chen J, Chen X, Zhang W, Zhao R, Xie J, He Y, Tan S. Dimethylglycine Can Enhance the Cryopreservation of Red Blood Cells by Reducing Ice Formation and Oxidative Damage. Int J Mol Sci 2023; 24:ijms24076696. [PMID: 37047668 PMCID: PMC10095525 DOI: 10.3390/ijms24076696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 03/15/2023] [Accepted: 03/31/2023] [Indexed: 04/14/2023] Open
Abstract
The cryopreservation of red blood cells (RBCs) holds great potential for ensuring timely blood transfusions and maintaining an adequate RBC inventory. The conventional cryoprotectants (CPAs) have a lot of limitations, and there is an obvious need for novel, efficient, and biocompatible CPAs. Here, it is shown for the first time that the addition of dimethylglycine (DMG) improved the thawed RBC recovery from 11.55 ± 1.40% to 72.15 ± 1.22%. We found that DMG could reduce the mechanical damage by inhibiting ice formation and recrystallization during cryopreservation. DMG can also scavenge reactive oxygen species (ROS) and maintain endogenous antioxidant enzyme activities to decrease oxidative damage during cryopreservation. Furthermore, the properties of thawed RBCs were found to be similar to the fresh RBCs in the control. Finally, the technique for order performance by similarity to ideal solution (TOPSIS) was used to compare the performance of glycerol (Gly), hydroxyethyl starch (HES), and DMG in cryopreservation, and DMG exhibited the best efficiency. This work confirms the use of DMG as a novel CPA for cryopreservation of RBCs and may promote clinical transfusion therapy.
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Affiliation(s)
- Yuying Hu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Xiangjian Liu
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Marlene Davis Ekpo
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Jiangming Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Xiaoxiao Chen
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Wenqian Zhang
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Rui Zhao
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Jingxian Xie
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
| | - Yongju He
- School of Materials Science and Engineering, Central South University, Changsha 410013, China
| | - Songwen Tan
- Xiangya School of Pharmaceutical Sciences, Central South University, Changsha 410013, China
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Dhanjal DS, Bhardwaj S, Chopra C, Singh R, Patocka J, Plucar B, Nepovimova E, Valis M, Kuca K. Millennium Nutrient N,N- Dimethylglycine (DMG) and its Effectiveness in Autism Spectrum Disorders. Curr Med Chem 2021; 29:2632-2651. [PMID: 34823458 DOI: 10.2174/0929867328666211125091811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2021] [Revised: 10/09/2021] [Accepted: 10/11/2021] [Indexed: 11/22/2022]
Abstract
Autism is a neurodevelopmental disorder belonging to the autism spectrum disorder (ASD). In ASDs, the individuals show substantial impairments in social communication, repetitive behaviours, and sensory behaviours deficits in the early stages of their life. Globally, the prevalence of autism is estimated to be less than 1%, especially in high-income countries. In recent decades, there has been a drastic increase in the incidence of ASD, which has put ASD into the category of epidemics. Presently, two US Food and Drug Administration-approved drugs, aripiprazole and risperidone are used to treat symptoms of agitation and irritability in autistic children. However, to date, no medication has been found to treat the core symptoms of ASD. The adverse side effects of conventional medicine and limited treatment options have led families and parents of autistic children to turn to complementary and alternative medicine (CAM) treatments, which are perceived as relatively safe compared to conventional medicine. Recently, N,N-dimethylglycine (DMG), a dietary supplement, has emerged as a useful supplement to improve the mental and physical state of children with ASD. The current review discusses ASD, the prevalence of ASD, CAM approach and efficacy of CAM treatment in children with ASD. Moreover, it highlights the chemistry, pharmacological effect, and clinical studies of DMG, highlighting its potential for improving the lifestyle of children with ASD.
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Affiliation(s)
- Daljeet Singh Dhanjal
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara. India
| | - Sonali Bhardwaj
- Department of Microbiology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara. India
| | - Chirag Chopra
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara. India
| | - Reena Singh
- Department of Biotechnology, School of Bioengineering and Biosciences, Lovely Professional University, Phagwara. India
| | - Jiri Patocka
- Department of Radiology, Toxicology and Population Protection, Faculty of Health and Social Studies, University of South Bohemia in Ceske Budejovice. Czech Republic
| | - Bohumir Plucar
- Reflex Therapy Laboratory, Udolni 393/18, 602 00 Brno. Czech Republic
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Kralove, Hradec Kralove. Czech Republic
| | - Martin Valis
- University Hospital Hradec Kralove, Hradec Kralove. Czech Republic
| | - Kamil Kuca
- University Hospital Hradec Kralove, Hradec Kralove. Czech Republic
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Yao H, Hu Y, Wang Q, Zhang Y, Rao K, Shi S. Effects of dietary dimethylglycine supplementation on laying performance, egg quality, and tissue index of hens during late laying period. Poult Sci 2021; 101:101610. [PMID: 34936951 PMCID: PMC8704446 DOI: 10.1016/j.psj.2021.101610] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Revised: 10/25/2021] [Accepted: 11/13/2021] [Indexed: 12/12/2022] Open
Abstract
In this study, the effects of 5 graded dietary levels (0.025, 0.05, 0.075, 0.1, and 0.125%) of dimethylglycine (DMG) were studied in laying hens during the late laying period (71–78 wk). Graded doses of DMG from 0.025 to 0.125% in the diet produced quadratic positive (P < 0.05) responses in the laying rate, egg-feed ratio, yolk color, grade follicular weight, and the number of large white follicles and linear positive (P < 0.05) responses in average egg weight, and the number of large white follicles. With 0.1% DMG, the laying rate and egg-feed ratio improved (P < 0.05), and the abdominal fat percentage decreased. Considering the laying performance under the conditions used in this study, the best-fit model for the DMG requirements of laying hens was estimated to range from 0.049 to 0.065% DMG during the late laying period based on a regression analysis. The addition of DMG did not affect the total cholesterol (TCH) and triglyceride (TG) contents in the plasma of laying hens; however, it significantly reduced the abdominal fat rate. DMG may change the course of lipid deposition in laying hens during the late laying period. In conclusion, supplementation with DMG can improve the laying rate and follicles development of laying hens.
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Affiliation(s)
- Hong Yao
- Poultry Institute, Chinese Academy of Agriculture Science, Yangzhou, Jiangsu, 225125, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, 225009, China; College of Animal Husbandry and Veterinary, Southwest Minzu University, Chengdu, 610041, China
| | - Yan Hu
- Poultry Institute, Chinese Academy of Agriculture Science, Yangzhou, Jiangsu, 225125, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, 225009, China
| | - Qiang Wang
- Poultry Institute, Chinese Academy of Agriculture Science, Yangzhou, Jiangsu, 225125, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, 225009, China
| | - Yijian Zhang
- Poultry Institute, Chinese Academy of Agriculture Science, Yangzhou, Jiangsu, 225125, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, 225009, China
| | - Kaiqing Rao
- College of Animal Husbandry and Veterinary, Southwest Minzu University, Chengdu, 610041, China
| | - Shourong Shi
- Poultry Institute, Chinese Academy of Agriculture Science, Yangzhou, Jiangsu, 225125, China; Jiangsu Co-Innovation Center for the Prevention and Control of Important Animal Infectious Disease and Zoonose, Yangzhou University, Yangzhou, 225009, China.
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Li L, Zhang W, Zhang S, Song L, Sun Q, Zhang H, Xiang H, Dong X. Bacteria and Archaea Synergistically Convert Glycine Betaine to Biogenic Methane in the Formosa Cold Seep of the South China Sea. mSystems 2021; 6:e0070321. [PMID: 34491083 DOI: 10.1128/mSystems.00703-21] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Cold seeps are globally widespread seafloor ecosystems that feature abundant methane production and flourishing chemotrophic benthic communities. Chemical evidence indicates that cold seep methane is largely biogenic; however, the primary methane-producing organisms and associated pathways involved in methanogenesis remain elusive. This work detected methane production when glycine betaine (GBT) or trimethylamine (TMA) was added to the sediment microcosms of the Formosa cold seep, South China Sea. The methane production was suppressed by antibiotic inhibition of bacteria, while GBT was accumulated. This suggests that the widely used osmoprotectant GBT could be converted to cold seep biogenic methane via the synergistic activity of bacteria and methanogenic archaea because archaea are not sensitive to antibiotics and no bacteria are known to produce ample methane (mM). 16S rRNA gene diversity analyses revealed that the predominant bacterial and archaeal genera in the GBT-amended methanogenic microcosms included Oceanirhabdus and Methanococcoides. Moreover, metagenomic analyses detected the presence of grdH and mtgB genes that are involved in GBT reduction and demethylation, respectively. Two novel species were obtained, including bacterium Oceanirhabdus seepicola, which reduces GBT to TMA, and a methanogenic archaeon, Methanococcoides seepicolus, which produces methane from TMA and GBT. The two strains reconstituted coculture efficiently converted GBT to methane at 18°C; however, at 4°C addition of dimethylglycine (DMG), the GBT demethylation product, was necessary. Therefore, this work demonstrated that GBT is the precursor not only of the biogenic methane but also of the cryoprotectant DMG to the microorganisms at the Formosa cold seep. IMPORTANCE Numerous cold seeps have been found in global continental margins where methane is enriched in pore waters that are forced upward from sediments. Therefore, high concerns have been focused on the methane-producing organisms and the metabolic pathways in these environments because methane is a potent greenhouse gas. In this study, GBT was identified as the main precursor for methane in the Formosa cold seep of the South China Sea. Further, synergism of bacteria and methanogenic archaea was identified in GBT conversion to methane via the GBT reduction pathway, while methanogen-mediated GBT demethylation to methane was also observed. In addition, GBT-demethylated product dimethyl glycine acted as a cryoprotectant that promoted the cold seep microorganisms at cold temperatures. GBT is an osmoprotectant that is widely used by marine organisms, and therefore, the GBT-derived methanogenic pathway reported here could be widely distributed among global cold seep environments.
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Pan XF, Yang JJ, Shu XO, Moore SC, Palmer ND, Guasch-Ferré M, Herrington DM, Harada S, Eliassen H, Wang TJ, Gerszten RE, Albanes D, Tzoulaki I, Karaman I, Elliott P, Zhu H, Wagenknecht LE, Zheng W, Cai H, Cai Q, Matthews CE, Menni C, Meyer KA, Lipworth LP, Ose J, Fornage M, Ulrich CM, Yu D. Associations of circulating choline and its related metabolites with cardiometabolic biomarkers: an international pooled analysis. Am J Clin Nutr 2021; 114:893-906. [PMID: 34020444 PMCID: PMC8408854 DOI: 10.1093/ajcn/nqab152] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2021] [Accepted: 04/09/2021] [Indexed: 12/16/2022] Open
Abstract
BACKGROUND Choline is an essential nutrient; however, the associations of choline and its related metabolites with cardiometabolic risk remain unclear. OBJECTIVE We examined the associations of circulating choline, betaine, carnitine, and dimethylglycine (DMG) with cardiometabolic biomarkers and their potential dietary and nondietary determinants. METHODS The cross-sectional analyses included 32,853 participants from 17 studies, who were free of cancer, cardiovascular diseases, chronic kidney diseases, and inflammatory bowel disease. In each study, metabolites and biomarkers were log-transformed and standardized by means and SDs, and linear regression coefficients (β) and 95% CIs were estimated with adjustments for potential confounders. Study-specific results were combined by random-effects meta-analyses. A false discovery rate <0.05 was considered significant. RESULTS We observed moderate positive associations of circulating choline, carnitine, and DMG with creatinine [β (95% CI): 0.136 (0.084, 0.188), 0.106 (0.045, 0.168), and 0.128 (0.087, 0.169), respectively, for each SD increase in biomarkers on the log scale], carnitine with triglycerides (β = 0.076; 95% CI: 0.042, 0.109), homocysteine (β = 0.064; 95% CI: 0.033, 0.095), and LDL cholesterol (β = 0.055; 95% CI: 0.013, 0.096), DMG with homocysteine (β = 0.068; 95% CI: 0.023, 0.114), insulin (β = 0.068; 95% CI: 0.043, 0.093), and IL-6 (β = 0.060; 95% CI: 0.027, 0.094), but moderate inverse associations of betaine with triglycerides (β = -0.146; 95% CI: -0.188, -0.104), insulin (β = -0.106; 95% CI: -0.130, -0.082), homocysteine (β = -0.097; 95% CI: -0.149, -0.045), and total cholesterol (β = -0.074; 95% CI: -0.102, -0.047). In the whole pooled population, no dietary factor was associated with circulating choline; red meat intake was associated with circulating carnitine [β = 0.092 (0.042, 0.142) for a 1 serving/d increase], whereas plant protein was associated with circulating betaine [β = 0.249 (0.110, 0.388) for a 5% energy increase]. Demographics, lifestyle, and metabolic disease history showed differential associations with these metabolites. CONCLUSIONS Circulating choline, carnitine, and DMG were associated with unfavorable cardiometabolic risk profiles, whereas circulating betaine was associated with a favorable cardiometabolic risk profile. Future prospective studies are needed to examine the associations of these metabolites with incident cardiovascular events.
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Affiliation(s)
- Xiong-Fei Pan
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jae Jeong Yang
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Xiao-Ou Shu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Steven C Moore
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Nicholette D Palmer
- Department of Biochemistry, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Marta Guasch-Ferré
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - David M Herrington
- Section on Cardiology, Department of Internal Medicine, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Sei Harada
- Department of Preventive Medicine and Public Health, Keio University School of Medicine, Tokyo, Japan
| | - Heather Eliassen
- Department of Nutrition, Harvard TH Chan School of Public Health, Boston, MA, USA
| | - Thomas J Wang
- Division of Cardiovascular Medicine, Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, USA
- Department of Internal Medicine, UT Southwestern Medical Center, Dallas, TX, USA
| | - Robert E Gerszten
- Broad Institute of Harvard and Massachusetts Institute of Technology and Cardiovascular Medicine, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | - Demetrius Albanes
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Ioanna Tzoulaki
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London, London, United Kingdom
- Dementia Research Institute, Imperial College London, London, United Kingdom
- Department of Hygiene and Epidemiology, University of Ioannina Medical School, Ioannina, Greece
| | - Ibrahim Karaman
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London, London, United Kingdom
- Dementia Research Institute, Imperial College London, London, United Kingdom
| | - Paul Elliott
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London, United Kingdom
- MRC-PHE Centre for Environment and Health, School of Public Health, Imperial College London, London, United Kingdom
- Dementia Research Institute, Imperial College London, London, United Kingdom
| | - Huilian Zhu
- Department of Nutrition, School of Public Health, Sun Yat-sen University, Guangzhou, China
| | - Lynne E Wagenknecht
- Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Wei Zheng
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Hui Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Qiuyin Cai
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Charles E Matthews
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA
| | - Cristina Menni
- Department of Twin Research and Genetic Epidemiology, King's College London, London, United Kingdom
| | - Katie A Meyer
- Department of Nutrition and Nutrition Research Institute, University of North Carolina at Chapel Hill, Kannapolis, NC, USA
| | - Loren P Lipworth
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jennifer Ose
- Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
- Huntsman Cancer Institute, Salt Lake City, UT, USA
| | - Myriam Fornage
- Brown Foundation Institute of Molecular Medicine, McGovern Medical School, University of Texas Health Science Center, Houston, TX, USA
| | - Cornelia M Ulrich
- Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
- Huntsman Cancer Institute, Salt Lake City, UT, USA
| | - Danxia Yu
- Division of Epidemiology, Department of Medicine, Vanderbilt Epidemiology Center, Vanderbilt University Medical Center, Nashville, TN, USA
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Cimmino F, Catapano A, Trinchese G, Cavaliere G, Culurciello R, Fogliano C, Penna E, Lucci V, Crispino M, Avallone B, Pizzo E, Mollica MP. Dietary Micronutrient Management to Treat Mitochondrial Dysfunction in Diet-Induced Obese Mice. Int J Mol Sci 2021; 22:2862. [PMID: 33799812 PMCID: PMC8000238 DOI: 10.3390/ijms22062862] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/25/2021] [Accepted: 03/08/2021] [Indexed: 02/04/2023] Open
Abstract
Obesity and associated metabolic disturbances, which have been increasing worldwide in recent years, are the consequences of unhealthy diets and physical inactivity and are the main factors underlying non-communicable diseases (NCD). These diseases are now responsible for about three out of five deaths worldwide, and it has been shown that they depend on mitochondrial dysfunction, systemic inflammation and oxidative stress. It was also demonstrated that several nutritional components modulating these processes are able to influence metabolic homeostasis and, consequently, to prevent or delay the onset of NCD. An interesting combination of nutraceutical substances, named DMG-gold, has been shown to promote metabolic and physical wellness. The aim of this research was to investigate the metabolic, inflammatory and oxidative pathways modulated by DMG-gold in an animal model with diet-induced obesity. Our data indicate that DMG-gold decreases the metabolic efficiency and inflammatory state and acts as an antioxidant and detoxifying agent, modulating mitochondrial functions. Therefore, DMG-gold is a promising candidate in the prevention/treatment of NCD.
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Affiliation(s)
- Fabiano Cimmino
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Angela Catapano
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
- Department of Pharmacy, University of Naples Federico II, 80131 Naples, Italy
| | - Giovanna Trinchese
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Gina Cavaliere
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Rosanna Culurciello
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Chiara Fogliano
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Eduardo Penna
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Valeria Lucci
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
- IEOS, Institute of Experimental Endocrinology and Oncology “G. Salvatore”—National Research Council, 80131 Naples, Italy
| | - Marianna Crispino
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Bice Avallone
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Elio Pizzo
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
| | - Maria Pina Mollica
- Department of Biology, University of Naples Federico II, 80126 Naples, Italy; (F.C.); (A.C.); (G.T.); (G.C.); (R.C.); (C.F.); (E.P.); (V.L.); (M.C.); (B.A.); (E.P.)
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9
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Ilozumba MN, Cheng TYD, Neuhouser ML, Miller JW, Beresford SAA, Duggan DJ, Toriola AT, Song X, Zheng Y, Bailey LB, Shadyab AH, Liu S, Malysheva O, Caudill MA, Ulrich CM. Associations between Plasma Choline Metabolites and Genetic Polymorphisms in One-Carbon Metabolism in Postmenopausal Women: The Women's Health Initiative Observational Study. J Nutr 2020; 150:2874-2881. [PMID: 32939549 PMCID: PMC7675024 DOI: 10.1093/jn/nxaa266] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Revised: 03/12/2020] [Accepted: 08/10/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Choline plays an integral role in one-carbon metabolism in the body, but it is unclear whether genetic polymorphisms are associated with variations in plasma choline and its metabolites. OBJECTIVES This study aimed to evaluate the association of genetic variants in choline and one-carbon metabolism with plasma choline and its metabolites. METHODS We analyzed data from 1423 postmenopausal women in a case-control study nested within the Women's Health Initiative Observational Study. Plasma concentrations of choline, betaine, dimethylglycine (DMG), and trimethylamine N-oxide were determined in 12-h fasting blood samples collected at baseline (1993-1998). Candidate and tagging single-nucleotide polymorphisms (SNPs) were genotyped in betaine-homocysteine S-methyltransferase (BHMT), BHMT2, 5,10-methylenetetrahydrofolate reductase (MTHFR), methylenetetrahydrofolate dehydrogenase (NADP+ dependent 1) (MTHFD1), 5-methyltetrahydrofolate-homocysteine methyltransferase (MTR), and 5-methyltetrahydrofolate-homocysteine methyltransferase reductase (MTRR). Linear regression was used to derive percentage difference in plasma concentrations per variant allele, adjusting for confounders, including B-vitamin biomarkers. Potential effect modification by plasma vitamin B-12, vitamin B-6, and folate concentrations and folic-acid fortification periods was examined. RESULTS The candidate SNP BHMT R239Q (rs3733890) was associated with lower concentrations of plasma betaine and DMG concentrations (-4.00% and -6.75% per variant allele, respectively; both nominal P < 0.05). Another candidate SNP, BHMT2 rs626105 A>G, was associated with higher plasma DMG concentration (13.0%; P < 0.0001). Several tagSNPs in these 2 genes were associated with plasma concentrations after correction for multiple comparisons. Vitamin B-12 status was a significant effect modifier of the association between the genetic variant BHMT2 rs626105 A>G and plasma DMG concentration. CONCLUSIONS Genetic variations in metabolic enzymes were associated with plasma concentrations of choline and its metabolites. Our findings contribute to the knowledge on the variation in blood nutrient concentrations in postmenopausal women.
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Affiliation(s)
| | | | - Marian L Neuhouser
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Joshua W Miller
- Department of Nutritional Sciences, Rutgers University, New Brunswick, NJ, USA
| | - Shirley A A Beresford
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA,Department of Epidemiology, University of Washington, Seattle, WA, USA
| | - David J Duggan
- Translational Genomics Research Institute, Phoenix, AZ, USA
| | - Adetunji T Toriola
- Division of Public Health Sciences, Department of Surgery, Washington University School of Medicine, St. Louis, MO, USA
| | - Xiaoling Song
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Yingye Zheng
- Public Health Sciences Division, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Lynn B Bailey
- Department of Foods and Nutrition, University of Georgia, Athens, GA, USA
| | - Aladdin H Shadyab
- Department of Family Medicine and Public Health, University of California, San Diego, La Jolla, CA, USA
| | - Simin Liu
- Department of Epidemiology, Brown University, Providence, RI, USA,Department of Medicine, Brown University, Providence, RI, USA
| | - Olga Malysheva
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - Marie A Caudill
- Division of Nutritional Sciences, Cornell University, Ithaca, NY, USA
| | - Cornelia M Ulrich
- Huntsman Cancer Institute, Salt Lake City, UT, USA,Department of Population Health Sciences, University of Utah, Salt Lake City, UT, USA
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10
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Storsve AB, Johnsen L, Nyborg C, Melau J, Hisdal J, Burri L. Effects of Krill Oil and Race Distance on Serum Choline and Choline Metabolites in Triathletes: A Field Study. Front Nutr 2020; 7:133. [PMID: 33015116 PMCID: PMC7461811 DOI: 10.3389/fnut.2020.00133] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/10/2020] [Indexed: 12/18/2022] Open
Abstract
Choline is an essential nutrient that has been implicated in athletic performance due to its role in maintaining normal muscle function. The concentration of free choline in serum may decrease during long-distance high-intensity exercise, yet few nutritional strategies to counteract this potentially performance-depleting loss in choline have been investigated outside the laboratory. This exploratory field study was performed to investigate if pre-race supplementation with phosphatidylcholine from krill oil can counteract the expected drop in choline and some of its metabolites during triathlon competitions. Forty-seven triathletes, 12 females and 35 males ranging in age from 25 to 61 years, were recruited from participants in the Ironman-distance Norseman Xtreme triathlon and the Sprint/Olympic-distance Oslo Triathlon. Twenty-four athletes were randomly allocated to the krill oil group, receiving 4 g of SuperbaBoost™ krill oil daily for 5 weeks prior to the race, and 23 athletes were randomly allocated to the placebo group, receiving 4 g of mixed vegetable oil daily. Blood samples were obtained before the race, immediately after completion of the race, and the day after the race for analysis of choline and its metabolites. The results showed that serum choline concentrations significantly decreased from pre-race to race finish in all races, with a more pronounced decrease observed in the Ironman-distance Norseman Xtreme triathlon (34% decrease) relative to the Sprint/Olympic-distance Oslo Triathlon (15% decrease). A reduction in betaine was also observed, while dimethylglycine (DMG) concentrations remained stable across all time points. Significantly higher concentrations of choline (9.4% on average) and DMG (21.4% on average) were observed in the krill oil compared to the placebo group, and the krill oil group showed a significantly greater increase in serum choline following race completion. In conclusion, krill oil may help to prevent that circulating choline concentrations become limiting during endurance competitions.
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Affiliation(s)
| | | | - Christoffer Nyborg
- Department of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Jørgen Melau
- Department of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Prehospital Division, Vestfold Hospital Trust, Tønsberg, Norway
| | - Jonny Hisdal
- Department of Clinical Medicine, Faculty of Medicine, University of Oslo, Oslo, Norway.,Section of Vascular Investigations, Oslo University Hospital, Oslo, Norway
| | - Lena Burri
- Aker BioMarine Antarctic AS, Lysaker, Norway
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11
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Andraos S, Lange K, Clifford SA, Jones B, Thorstensen EB, Kerr JA, Wake M, Saffery R, Burgner DP, O'Sullivan JM. Plasma Trimethylamine N-Oxide and Its Precursors: Population Epidemiology, Parent-Child Concordance, and Associations with Reported Dietary Intake in 11- to 12-Year-Old Children and Their Parents. Curr Dev Nutr 2020; 4:nzaa103. [PMID: 32666035 PMCID: PMC7335361 DOI: 10.1093/cdn/nzaa103] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Revised: 05/18/2020] [Accepted: 06/02/2020] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Trimethylamine N-oxide (TMAO) is a microbiome- and diet-derived metabolite implicated in adverse cardiovascular outcomes. To date, studies of plasma TMAO concentrations have largely focused on individuals with metabolic disease. As such, data on TMAO concentrations in population settings and parent-child dyads are lacking. OBJECTIVES This study aimed to investigate parent-child concordance, age, and sex effects on plasma concentrations of TMAO and its precursors [l-carnitine, choline, betaine, and dimethylglycine (DMG)]. Associations between concentrations of TMAO and its precursors and self-reported dietary intakes of animal protein (i.e., red meat, meat products, chicken, fish, milk products, and cheese) and fast-food meals were also investigated. METHODS A total of 1166 children (mean ± SD age: 11 ± 0.5 y, 51% female) and 1324 parents (mean ± SD age: 44 ± 5.1 y, 87% female) had a biomedical assessment as part of Growing Up in Australia's Child Health Checkpoint. Plasma TMAO and precursor concentrations were quantified using ultra-high-pressure LC coupled with tandem MS. RESULTS Familial dyads significantly contributed to plasma TMAO and precursor concentrations (P < 0.0001), explaining 37% of variance for TMAO concentrations. Least-square mean ± SE plasma TMAO was lower in children (0.79 ± 0.02 µM on the log-scale) than in adults (1.22 ± 0.02 µM). By contrast, children's betaine (40.30 ± 0.34 µM) and DMG concentrations (1.02 ± 0.01 µM on the log-scale) were higher than adults' betaine (37.50 ± 0.32 µM) and DMG concentrations (0.80 ± 0.01 µM) (P < 0.0001). Mean values of all metabolites, except adult TMAO, were higher in males than in females (P < 0.001). Greater reported intake of red meat and fish was associated with higher TMAO concentrations in both children [estimates (95% CIs) for red meat: 0.06 (0.01, 0.10); fish: 0.11 (0.06, 0.17)] and adults [red meat: 0.13 (0.08, 0.17); meat products: 0.07 (0.03, 0.12); and fish: 0.09 (0.04, 0.14)]. CONCLUSIONS Age, sex, and shared family factors, including diet, contribute to variation in plasma concentrations of TMAO and its precursors.
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Affiliation(s)
- Stephanie Andraos
- Liggins Institute, The University of Auckland, Auckland, New Zealand
| | - Katherine Lange
- The Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - Susan A Clifford
- The Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - Beatrix Jones
- Department of Statistics, Faculty of Science, The University of Auckland, Auckland, New Zealand
| | | | - Jessica A Kerr
- The Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - Melissa Wake
- The Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - Richard Saffery
- The Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
| | - David P Burgner
- The Murdoch Children's Research Institute, Parkville, Victoria, Australia
- Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia
- Department of Paediatrics, Monash University, Clayton, Victoria, Australia
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12
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Mödinger Y, Schön C, Wilhelm M, Hals PA. Plasma Kinetics of Choline and Choline Metabolites After A Single Dose of Superba BoostTM Krill Oil or Choline Bitartrate in Healthy Volunteers. Nutrients 2019; 11:nu11102548. [PMID: 31652561 PMCID: PMC6835836 DOI: 10.3390/nu11102548] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 10/16/2019] [Accepted: 10/18/2019] [Indexed: 12/23/2022] Open
Abstract
As an essential nutrient, the organic water-soluble compound choline is important for human health. Choline is required for numerous biological processes, including the synthesis of neurotransmitters, and it is an important prerequisite for structural integrity and the functioning of cells. A choline-rich diet provides crucial choline sources, yet additional choline dietary supplements might be needed to fully meet the body’s requirements. Dependent on the structure of choline in different sources, absorption and metabolism may differ and strongly impact the bioavailability of circulating choline. This study in healthy volunteers aimed to compare the pharmacokinetics of free choline and of selected choline metabolites between the single dose intake of phosphatidylcholine, present in SuperbaBoostTM krill oil, and choline bitartrate salt. Results demonstrate that albeit free choline levels in plasma were comparable between both choline sources, peak choline concentration was reached significantly later upon intake of SuperbaBoostTM. Moreover, the occurrence of choline metabolites differed between the study products. Levels of the biologically important metabolites betaine and dimethylglycine (DMG) were higher, while levels of trimethylamine N-oxide (TMAO) were substantially lower upon intake of SuperbaBoostTM compared to choline bitartrate.
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Affiliation(s)
- Yvonne Mödinger
- BioTeSys GmbH, Schelztorstraße 54-56, 73728 Esslingen, Germany.
| | | | - Manfred Wilhelm
- Department of Mathematics, Natural and Economic Sciences, Ulm University of Applied Sciences, Albert-Einstein-Allee 55, 89081 Ulm, Germany.
| | - Petter-Arnt Hals
- Aker BioMarine Antarctic AS, Oksenøyveien 10, 1327 Lysaker, Norway.
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13
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Bjørndal B, Bruheim I, Lysne V, Ramsvik MS, Ueland PM, Nordrehaug JE, Nygård OK, Berge RK. Plasma choline, homocysteine and vitamin status in healthy adults supplemented with krill oil: a pilot study. Scand J Clin Lab Invest 2018; 78:527-532. [PMID: 30261756 DOI: 10.1080/00365513.2018.1512716] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
Plasma concentrations of metabolites along the choline oxidation and tryptophan degradation pathways have been linked to lifestyle diseases and dietary habits. This study aimed to investigate how krill oil, a source of ω-3 polyunsaturated fatty acids (PUFAs) with a high phosphatidylcholine content, affected these parameters. The pilot study was conducted as a 28 days intervention in 17 healthy volunteers (18-36 years), who received a supplement of 4.5 g krill oil per day, providing 833 mg ω-3 PUFAs, and 1750 mg phosphatidylcholine. Krill oil supplementation increased fasting plasma choline (+28.4%, p < .001), betaine (+26.6%, p < .001), dimethylglycine (+33.7%, p < .001) and sarcosine (+16.8%, p < .001), whereas no statistically significant changes were seen for plasma glycine, serine, methionine, total homocysteine, cysteine, cystathionine, methionine sulfoxide, folate, cobalamin, B2-, B3-, and B6 vitamers, tryptophan, kynurenines, nicotinamide, vitamin A and vitamin E. In summary, krill oil supplementation influenced choline metabolite levels, but not plasma metabolites of the tryptophan-kynurenine-nicotinamide pathways and vitamins. These observations should be confirmed in a placebo-controlled trial, including an ω-3 PUFA supplement without phospholipids to explore the potential additive effects of the different active ingredients.
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Affiliation(s)
- Bodil Bjørndal
- a Department of Clinical Science , University of Bergen , Bergen , Norway
| | - Inge Bruheim
- b Rimfrost AS , Fosnavåg , Norway.,c Møreforskning AS , Ålesund , Norway
| | - Vegard Lysne
- a Department of Clinical Science , University of Bergen , Bergen , Norway
| | - Marie S Ramsvik
- a Department of Clinical Science , University of Bergen , Bergen , Norway
| | - Per M Ueland
- a Department of Clinical Science , University of Bergen , Bergen , Norway
| | - Jan E Nordrehaug
- a Department of Clinical Science , University of Bergen , Bergen , Norway
| | - Ottar K Nygård
- a Department of Clinical Science , University of Bergen , Bergen , Norway.,d Department of Heart Disease , Haukeland University Hospital , Bergen , Norway.,e KG Jebsen Centre for Diabetes Research, University of Bergen , Bergen , Norway
| | - Rolf K Berge
- a Department of Clinical Science , University of Bergen , Bergen , Norway.,d Department of Heart Disease , Haukeland University Hospital , Bergen , Norway
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14
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Mailloux RJ, Young A, Chalker J, Gardiner D, O'Brien M, Slade L, Brosnan JT. Choline and dimethylglycine produce superoxide/hydrogen peroxide from the electron transport chain in liver mitochondria. FEBS Lett 2016; 590:4318-4328. [PMID: 27761911 DOI: 10.1002/1873-3468.12461] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2016] [Revised: 10/11/2016] [Accepted: 10/13/2016] [Indexed: 11/07/2022]
Abstract
Here, we report that choline and dimethylglycine can stimulate reactive oxygen species (ROS) production in liver mitochondria. Choline stimulated O2 ˙- /H2 O2 formation at a concentration of 5 μm. We also observed that Complex II and III inhibitors, atpenin A5 and myxothiazol, collectively induced a 95% decrease in O2 ˙- /H2 O2 production indicating both sites serve as the main sources of ROS during choline oxidation. Dimethylglycine, an intermediate of choline oxidation, was a more effective ROS generator. Rates of production were ~ 43% higher than choline-mediated O2 ˙- /H2 O2 production. The main site for dimethylglycine-mediated ROS production was via reverse electron transfer to Complex I. Our results demonstrate that metabolism of essential metabolites involved in methionine and folic acid biosynthesis can stimulate mitochondrial ROS production.
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Affiliation(s)
- Ryan J Mailloux
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
| | - Adrian Young
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
| | - Julia Chalker
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
| | - Danielle Gardiner
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
| | - Marisa O'Brien
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
| | - Liam Slade
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
| | - John T Brosnan
- Department of Biochemistry, Memorial University of Newfoundland, St. John's, Canada
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15
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Colomina JM, Cavallé-Busquets P, Fernàndez-Roig S, Solé-Navais P, Fernandez-Ballart JD, Ballesteros M, Ueland PM, Meyer K, Murphy MM. Maternal Folate Status and the BHMT c.716G>A Polymorphism Affect the Betaine Dimethylglycine Pathway during Pregnancy. Nutrients 2016; 8:nu8100621. [PMID: 27735840 PMCID: PMC5084009 DOI: 10.3390/nu8100621] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2016] [Revised: 09/20/2016] [Accepted: 09/27/2016] [Indexed: 12/31/2022] Open
Abstract
The effect of the betaine: homocysteine methyltransferase BHMT c.716G>A (G: guanosine; A: adenosine) single nucleotide polymorphism (SNP) on the BHMT pathway is unknown during pregnancy. We hypothesised that it impairs betaine to dimethylglycine conversion and that folate status modifies its effect. We studied 612 women from the Reus Tarragona Birth Cohort from ≤12 gestational weeks (GW) throughout pregnancy. The frequency of the variant BHMT c.716A allele was 30.8% (95% confidence interval (CI): 28.3, 33.5). In participants with normal-high plasma folate status (>13.4 nmol/L), least square geometric mean [95% CI] plasma dimethylglycine (pDMG, µmol/L) was lower in the GA (2.35 [2.23, 2.47]) versus GG (2.58 [2.46, 2.70]) genotype at ≤12 GW (p < 0.05) and in the GA (2.08 [1.97, 2.19]) and AA (1.94 [1.75, 2.16]) versus GG (2.29 [2.18, 2.40]) genotypes at 15 GW (p < 0.05). No differences in pDMG between genotypes were observed in participants with possible folate deficiency (≤13.4 nmol/L) (p for interactions at ≤12 GW: 0.023 and 15 GW: 0.038). PDMG was lower in participants with the AA versus GG genotype at 34 GW (2.01 [1.79, 2.25] versus 2.44 [2.16, 2.76] and at labour, 2.51 [2.39, 2.64] versus 3.00 [2.84, 3.18], (p < 0.01)). Possible deficiency compared to normal-high folate status was associated with higher pDMG in multiple linear regression analysis (β coefficients [SEM] ranging from 0.07 [0.04], p < 0.05 to 0.20 [0.04], p < 0.001 in models from early and mid-late pregnancy) and the AA compared to GG genotype was associated with lower pDMG (β coefficients [SEM] ranging from −0.11 [0.06], p = 0.055 to −0.23 [0.06], p < 0.001). Conclusion: During pregnancy, the BHMT pathway is affected by folate status and by the variant BHMT c.716A allele.
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Affiliation(s)
- Jose M Colomina
- Area of Preventive Medicine and Public Health, Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, IISPV, C/Sant Llorenç 21, Reus 43201, Spain.
- Ciberobn Fisiopatología de la Obesidad y Nutrición (CB06/03), Instituto Carlos III, Madrid 28029, Spain.
| | - Pere Cavallé-Busquets
- Ciberobn Fisiopatología de la Obesidad y Nutrición (CB06/03), Instituto Carlos III, Madrid 28029, Spain.
- Area of Obstetrics and Gynaecology, Hospital Universitari Sant Joan, Reus and Universitat Rovira i Virgili, Reus 43204, Spain.
| | - Sílvia Fernàndez-Roig
- Area of Preventive Medicine and Public Health, Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, IISPV, C/Sant Llorenç 21, Reus 43201, Spain.
- Ciberobn Fisiopatología de la Obesidad y Nutrición (CB06/03), Instituto Carlos III, Madrid 28029, Spain.
| | - Pol Solé-Navais
- Area of Preventive Medicine and Public Health, Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, IISPV, C/Sant Llorenç 21, Reus 43201, Spain.
- Ciberobn Fisiopatología de la Obesidad y Nutrición (CB06/03), Instituto Carlos III, Madrid 28029, Spain.
| | - Joan D Fernandez-Ballart
- Area of Preventive Medicine and Public Health, Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, IISPV, C/Sant Llorenç 21, Reus 43201, Spain.
- Ciberobn Fisiopatología de la Obesidad y Nutrición (CB06/03), Instituto Carlos III, Madrid 28029, Spain.
| | - Mónica Ballesteros
- Area of Obstetrics and Gynaecology, Hospital Universitari Joan XXIII, Tarragona and Universitat Rovira i Virgili, Tarragona 43005, Spain.
| | - Per M Ueland
- Section for Pharmacology, Department of Internal Medicine, University of Bergen, Bergen N-5020, Norway.
| | - Klaus Meyer
- Bevital A/S, Laboratory building, 9th floor, Bergen N-5021, Norway.
| | - Michelle M Murphy
- Area of Preventive Medicine and Public Health, Faculty of Medicine and Health Sciences, Universitat Rovira i Virgili, IISPV, C/Sant Llorenç 21, Reus 43201, Spain.
- Ciberobn Fisiopatología de la Obesidad y Nutrición (CB06/03), Instituto Carlos III, Madrid 28029, Spain.
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16
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Heger Z, Gumulec J, Cernei N, Polanska H, Raudenska M, Masarik M, Eckschlager T, Stiborova M, Adam V, Kizek R. Relation of exposure to amino acids involved in sarcosine metabolic pathway on behavior of non-tumor and malignant prostatic cell lines. Prostate 2016; 76:679-90. [PMID: 26847870 DOI: 10.1002/pros.23159] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Accepted: 01/12/2016] [Indexed: 12/31/2022]
Abstract
BACKGROUND Sarcosine (N-methylglycine) was previously delineated as a substantial oncometabolite of prostate cancer (PCa) and its metabolism seems to be significantly involved in PCa development and behavior. METHODS We focused on investigation whether the exposure of prostate cells (PNT1A, 22Rv1, and PC-3) to sarcosine-related amino acids (glycine, dimethylglycine, and sarcosine) affects their aggressiveness (cell mobility and division rates, using real-time cell based assay). The effect of supplementation on expression of glycine-N-methyltransferase (GNMT) mRNA was examined using qRT-PCR. Finally, post-treatment amino acids patterns were determined with consequent statistical processing using the Ward's method, factorial ANOVA and principal component analysis (P < 0.05). RESULTS The highest migration induced sarcosine and glycine in metastatic PC-3 cells (a decrease in relative free area about 53% and 73%). The highest cell division was achieved after treatment of 22Rv1 and PC-3 cells with sarcosine (time required for division decreased by 65% or 45%, when compared to untreated cells). qRT-PCR revealed also significant effects on expression of GNMT. Finally, amino acid profiling shown specific amino acid patterns for each cell line. In both, treated and untreated PC-3 cells significantly higher levels of serine, glutamic acid, and aspartate, linked with prostate cancer progression were found. CONCLUSIONS Sarcosine-related amino acids can exceptionally affect the behavior of benign and malignant prostate cells.
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Affiliation(s)
- Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic, European Union
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
| | - Jaromir Gumulec
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
- Faculty of Medicine, Department of Physiology, Masaryk University, Brno, Czech Republic, European Union
| | - Natalia Cernei
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic, European Union
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
| | - Hana Polanska
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
- Faculty of Medicine, Department of Physiology, Masaryk University, Brno, Czech Republic, European Union
| | - Martina Raudenska
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
- Faculty of Medicine, Department of Physiology, Masaryk University, Brno, Czech Republic, European Union
| | - Michal Masarik
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
- Faculty of Medicine, Department of Physiology, Masaryk University, Brno, Czech Republic, European Union
| | - Tomas Eckschlager
- 2nd Faculty of Medicine, Department of Paediatric Haematology and Oncology, Charles University and University Hospital Motol, Czech Republic, European Union
| | - Marie Stiborova
- Faculty of Science, Department of Biochemistry, Charles University, Czech Republic, European Union
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic, European Union
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
| | - Rene Kizek
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, Czech Republic, European Union
- Central European Institute of Technology, Brno University of Technology, Brno, Czech Republic, European Union
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Rajdl D, Racek J, Trefil L, Stehlik P, Dobra J, Babuska V. Effect of Folic Acid, Betaine, Vitamin B₆, and Vitamin B12 on Homocysteine and Dimethylglycine Levels in Middle-Aged Men Drinking White Wine. Nutrients 2016; 8:E34. [PMID: 26771632 DOI: 10.3390/nu8010034] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 01/04/2016] [Accepted: 01/06/2016] [Indexed: 11/17/2022] Open
Abstract
Moderate regular consumption of alcoholic beverages is believed to protect against atherosclerosis but can also increase homocysteine or dimethylglycine, which are putative risk factors for atherosclerosis. We aimed (1) to investigate the effect of alcohol consumption on vitamins and several metabolites involved in one-carbon metabolism; and (2) to find the most effective way of decreasing homocysteine during moderate alcohol consumption. Methods: Male volunteers (n = 117) were randomly divided into five groups: the wine-only group (control, 375 mL of white wine daily for one month) and four groups combining wine consumption with one of the supplemented substances (folic acid, betaine, and vitamins B12 or B6). Significant lowering of homocysteine concentration after the drinking period was found in subjects with concurrent folate and betaine supplementation. Vitamin B12 and vitamin B6 supplementation did not lead to a statistically significant change in homocysteine. According to a multiple linear regression model, the homocysteine change in the wine-only group was mainly determined by the interaction between the higher baseline homocysteine concentration and the change in dimethylglycine levels. Folate and betaine can attenuate possible adverse effects of moderate alcohol consumption. Dimethylglycine should be interpreted together with data on alcohol consumption and homocysteine concentration.
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Lysne V, Strand E, Svingen GFT, Bjørndal B, Pedersen ER, Midttun Ø, Olsen T, Ueland PM, Berge RK, Nygård O. Peroxisome Proliferator-Activated Receptor Activation is Associated with Altered Plasma One-Carbon Metabolites and B-Vitamin Status in Rats. Nutrients 2016; 8:nu8010026. [PMID: 26742069 PMCID: PMC4728640 DOI: 10.3390/nu8010026] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Revised: 12/18/2015] [Accepted: 12/28/2015] [Indexed: 12/16/2022] Open
Abstract
Plasma concentrations of metabolites along the choline oxidation pathway have been linked to increased risk of major lifestyle diseases, and peroxisome proliferator-activated receptors (PPARs) have been suggested to be involved in the regulation of key enzymes along this pathway. In this study, we investigated the effect of PPAR activation on circulating and urinary one-carbon metabolites as well as markers of B-vitamin status. Male Wistar rats (n = 20) received for 50 weeks either a high-fat control diet or a high-fat diet with tetradecylthioacetic acid (TTA), a modified fatty acid and pan-PPAR agonist with high affinity towards PPARα. Hepatic gene expression of PPARα, PPARβ/δ and the enzymes involved in the choline oxidation pathway were analyzed and concentrations of metabolites were analyzed in plasma and urine. TTA treatment altered most biomarkers, and the largest effect sizes were observed for plasma concentrations of dimethylglycine, nicotinamide, methylnicotinamide, methylmalonic acid and pyridoxal, which were all higher in the TTA group (all p < 0.01). Hepatic Pparα mRNA was increased after TTA treatment, but genes of the choline oxidation pathway were not affected. Long-term TTA treatment was associated with pronounced alterations on the plasma and urinary concentrations of metabolites related to one-carbon metabolism and B-vitamin status in rats.
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Affiliation(s)
- Vegard Lysne
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Elin Strand
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Gard F T Svingen
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway.
| | - Bodil Bjørndal
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Eva R Pedersen
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway.
| | | | - Thomas Olsen
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
| | - Per M Ueland
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Laboratory of Clinical Biochemistry, Haukeland University Hospital, 5021 Bergen, Norway.
| | - Rolf K Berge
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway.
| | - Ottar Nygård
- Department of Clinical Science, University of Bergen, 5020 Bergen, Norway.
- Department of Heart Disease, Haukeland University Hospital, 5021 Bergen, Norway.
- KG Jebsen Centre for Diabetes Research, University of Bergen, 5009 Bergen, Norway.
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Visentin CE, Masih S, Plumptre L, Malysheva O, Nielsen DE, Sohn KJ, Ly A, Lausman AY, Berger H, Croxford R, El-Sohemy A, Caudill MA, O'Connor DL, Kim YI. Maternal Choline Status, but Not Fetal Genotype, Influences Cord Plasma Choline Metabolite Concentrations. J Nutr 2015; 145:1491-7. [PMID: 25972528 DOI: 10.3945/jn.115.211136] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2015] [Accepted: 04/16/2015] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND Choline deficiency during pregnancy can lead to adverse birth outcomes, including impaired neurodevelopment and birth defects. Genetic variants of choline and one-carbon metabolism may also influence birth outcomes by altering plasma choline concentrations. The effects of maternal ad libitum choline intake during pregnancy and fetal genetic variants on maternal and cord concentrations of choline and its metabolites are unknown. OBJECTIVES This prospective study sought to assess the effect of 1) maternal dietary choline intake on maternal and cord plasma concentrations of choline and its metabolites, and 2) fetal genetic polymorphisms on cord plasma concentrations. METHODS The dietary choline intake of 368 pregnant Canadian women was assessed in early (0-16 wk) and late (23-37 wk) pregnancy with the use of a food frequency questionnaire. Plasma concentrations of free choline and its metabolites were measured in maternal samples at recruitment and delivery, and in the cord blood. Ten fetal genetic variants in choline and one-carbon metabolism were assessed for their association with cord plasma concentrations of free choline and its metabolites. RESULTS Mean maternal plasma free choline, dimethylglycine, and trimethylamine N-oxide (TMAO) concentrations increased during pregnancy by 49%, 17%, and 13%, respectively (P < 0.005), whereas betaine concentrations decreased by 21% (P < 0.005). Cord plasma concentrations of free choline, betaine, dimethylglycine, and TMAO were 3.2, 2.0, 1.3, and 0.88 times corresponding maternal concentrations at delivery, respectively (all P < 0.005). Maternal plasma concentrations of betaine, dimethylglycine, and TMAO (r(2) = 0.19-0.51; P < 0.0001) at delivery were moderately strong, whereas maternal concentrations of free choline were not significant (r(2) = 0.12; P = 0.06), predictors of cord plasma concentrations of these metabolites. Neither maternal dietary intake nor fetal genetic variants predicted maternal or cord plasma concentrations of choline and its metabolites. CONCLUSION These data collectively indicate that maternal choline status, but not fetal genotype, influences cord plasma concentrations of choline metabolites. This trial was registered at clinicaltrials.gov as NCT02244684.
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Affiliation(s)
- Carly E Visentin
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Shannon Masih
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Lesley Plumptre
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Olga Malysheva
- Division of Nutritional Sciences, College of Human Ecology, Cornell University, Ithaca, NY; and
| | - Daiva E Nielsen
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Kyoung-Jin Sohn
- Departments of Medicine and Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Anna Ly
- Departments of Medicine and Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada
| | - Andrea Y Lausman
- Obstetrics and Gynecology, St. Michael's Hospital and University of Toronto, Toronto, Canada
| | - Howard Berger
- Obstetrics and Gynecology, St. Michael's Hospital and University of Toronto, Toronto, Canada
| | | | - Ahmed El-Sohemy
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada
| | - Marie A Caudill
- Division of Nutritional Sciences, College of Human Ecology, Cornell University, Ithaca, NY; and
| | - Deborah L O'Connor
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Research Institute, the Hospital for Sick Children, Toronto, Canada
| | - Young-In Kim
- Department of Nutritional Sciences, University of Toronto, Toronto, Canada; Departments of Medicine and Keenan Research Centre for Biomedical Science, St. Michael's Hospital, Toronto, Canada;
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Nitter M, Norgård B, de Vogel S, Eussen SJPM, Meyer K, Ulvik A, Ueland PM, Nygård O, Vollset SE, Bjørge T, Tjønneland A, Hansen L, Boutron-Ruault M, Racine A, Cottet V, Kaaks R, Kühn T, Trichopoulou A, Bamia C, Naska A, Grioni S, Palli D, Panico S, Tumino R, Vineis P, Bueno-de-Mesquita HB, van Kranen H, Peeters PH, Weiderpass E, Dorronsoro M, Jakszyn P, Sánchez M, Argüelles M, Huerta JM, Barricarte A, Johansson M, Ljuslinder I, Khaw K, Wareham N, Freisling H, Duarte-Salles T, Stepien M, Gunter MJ, Riboli E. Plasma methionine, choline, betaine, and dimethylglycine in relation to colorectal cancer risk in the European Prospective Investigation into Cancer and Nutrition (EPIC). Ann Oncol 2014; 25:1609-15. [PMID: 24827130 DOI: 10.1093/annonc/mdu185] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Disturbances in one carbon metabolism may contribute to carcinogenesis by affecting methylation and synthesis of DNA. Choline and its oxidation product betaine are involved in this metabolism and can serve as alternative methyl group donors when folate status is low. PATIENTS AND METHODS We conducted a case-control study nested within the European Prospective Investigation into Cancer and Nutrition (EPIC), to investigate plasma concentrations of the methyl donors methionine, choline, betaine (trimethylglycine), and dimethylglycine (DMG) in relation to colorectal cancer (CRC) risk. Our study included 1367 incident CRC cases (965 colon and 402 rectum) and 2323 controls matched by gender, age group, and study center. Multivariate-adjusted odds ratios (ORs) and 95% confidence intervals (95% CIs) for CRC risk were estimated by conditional logistic regression, comparing the fifth to the first quintile of plasma concentrations. RESULTS Overall, methionine (OR: 0.79, 95% CI: 0.63-0.99, P-trend = 0.05), choline (OR: 0.77, 95% CI: 0.60-0.99, P-trend = 0.07), and betaine (OR: 0.85, 95% CI: 0.66-1.09, P-trend = 0.06) concentrations were inversely associated with CRC risk of borderline significance. In participants with folate concentration below the median of 11.3 nmol/l, high betaine concentration was associated with reduced CRC risk (OR: 0.71, 95% CI: 0.50-1.00, P-trend = 0.02), which was not observed for those having a higher folate status. Among women, but not men, high choline concentration was associated with decreased CRC risk (OR: 0.62, 95% CI: 0.43-0.88, P-trend = 0.01). Plasma DMG was not associated with CRC risk. CONCLUSIONS Individuals with high plasma concentrations of methionine, choline, and betaine may be at reduced risk of CRC.
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Affiliation(s)
- M Nitter
- Departments of Global Public Health and Primary Care
| | - B Norgård
- Departments of Global Public Health and Primary Care
| | - S de Vogel
- Departments of Global Public Health and Primary Care
| | - S J P M Eussen
- Departments of Global Public Health and Primary Care Clinical Science, Section for Pharmacology, University of Bergen, Bergen, Norway Department of Epidemiology, School for Public Health and Primary Care, CAPHRI, Maastricht University, Maastricht, The Netherlands
| | | | | | - P M Ueland
- Clinical Science, Section for Pharmacology, University of Bergen, Bergen, Norway Laboratory of Clinical Biochemistry, Haukeland University Hospital, Bergen
| | - O Nygård
- Departments of Clinical Science, Section of Cardiology, University of Bergen, Bergen Heart Disease, Haukeland University Hospital, Bergen
| | - S E Vollset
- Departments of Global Public Health and Primary Care Norwegian Institute of Public Health, Bergen, Norway
| | - T Bjørge
- Departments of Global Public Health and Primary Care Norwegian Institute of Public Health, Bergen, Norway
| | - A Tjønneland
- Institute of Cancer Epidemiology, Danish Cancer Society, Copenhagen, Denmark
| | - L Hansen
- Institute of Cancer Epidemiology, Danish Cancer Society, Copenhagen, Denmark
| | - M Boutron-Ruault
- INSERM, Centre for Research in Epidemiology and Population Health (CESP), Nutrition, Hormones and Women's Health Team, Villejuif Paris South University, Villejuif IGR, Villejuif
| | - A Racine
- INSERM, Centre for Research in Epidemiology and Population Health (CESP), Nutrition, Hormones and Women's Health Team, Villejuif Paris South University, Villejuif IGR, Villejuif
| | - V Cottet
- INSERM, Research Centre 'Lipids, Nutrition, Cancer', Dijon, France
| | - R Kaaks
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - T Kühn
- German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - A Trichopoulou
- Hellenic Health Foundation, Athens WHO Collaborating Center for Food and Nutrition Policies, Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, Athens, Greece
| | - C Bamia
- Hellenic Health Foundation, Athens WHO Collaborating Center for Food and Nutrition Policies, Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, Athens, Greece
| | - A Naska
- Hellenic Health Foundation, Athens WHO Collaborating Center for Food and Nutrition Policies, Department of Hygiene, Epidemiology and Medical Statistics, University of Athens Medical School, Athens, Greece
| | - S Grioni
- Epidemiology and Prevention Unit, Fondazione IRCCS Istituto Nazionale dei Tumori, Milano
| | - D Palli
- Molecular and Nutritional Epidemiology Unit, Cancer Research and Prevention Institute-ISPO, Florence
| | - S Panico
- Dipartimento di Medicina Clinica e Chirurgia, Federico II University, Naples
| | - R Tumino
- Cancer Registry and Histopathology Unit, 'Civile - M.P. Arezzo' Hospital, ASP, Ragusa
| | - P Vineis
- School of Public Health and HuGeF Foundation, Torino, Italy The School of Public Health, Imperial College London, London, UK
| | - H B Bueno-de-Mesquita
- The School of Public Health, Imperial College London, London, UK National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands Department of Gastroenterology and Hepatology
| | - H van Kranen
- National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - P H Peeters
- The School of Public Health, Imperial College London, London, UK Julius Center for Health Sciences and Primary Care, University Medical Center, Utrecht, The Netherlands
| | - E Weiderpass
- Department of Community Medicine, Faculty of Health Sciences, UIT The Arctic University of Norway, Tromsø Department of Research, Cancer Registry of Norway, Oslo, Norway Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden Department of Genetic Epidemiology, Samfundet Folkhälsan, Helsinki, Finland
| | - M Dorronsoro
- Basque Regional Health Department, Public Health Direction and Biodonostia Research Institute (CIBERESP), San Sebastian
| | - P Jakszyn
- Unit of Nutrition, Environment and Cancer, Cancer Epidemiology Research Program, Catalan Institute of Oncology, Barcelona
| | - M Sánchez
- Andalusian School of Public Health, Granada CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid Instituto de Investigación Biosanitaria de Granada (Granada.ibs), Granada
| | | | - J M Huerta
- CIBER de Epidemiología y Salud Pública (CIBERESP), Madrid Department of Epidemiology, Regional Health Council, Murcia
| | - A Barricarte
- Public Health Institute of Navarra, Pamplona Consortium for Biomedical Research in Epidemiology and Public Health, Madrid, Spain
| | - M Johansson
- Department of Biobank Research, Umeå University, Umeå, Sweden International Agency for Research on Cancer (IARC-WHO), Lyon, France
| | - I Ljuslinder
- Department of Radiation Sciences, Oncology, University of Umeå, Umeå, Sweden
| | - K Khaw
- University of Cambridge School of Clinical Medicine, Cambridge
| | - N Wareham
- MRC Epidemiology Unit, University of Cambridge, Cambridge, UK
| | - H Freisling
- International Agency for Research on Cancer (IARC-WHO), Lyon, France
| | - T Duarte-Salles
- International Agency for Research on Cancer (IARC-WHO), Lyon, France
| | - M Stepien
- International Agency for Research on Cancer (IARC-WHO), Lyon, France
| | - M J Gunter
- The School of Public Health, Imperial College London, London, UK
| | - E Riboli
- The School of Public Health, Imperial College London, London, UK
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Kapustin EA, Minkov VS, Boldyreva EV. Effect of pressure on methylated glycine derivatives: relative roles of hydrogen bonds and steric repulsion of methyl groups. Acta Crystallogr B Struct Sci Cryst Eng Mater 2014; 70:517-532. [PMID: 24892599 DOI: 10.1107/s205252061401035x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Accepted: 05/07/2014] [Indexed: 06/03/2023]
Abstract
Infinite head-to-tail chains of zwitterions present in the crystals of all amino acids are known to be preserved even after structural phase transitions. In order to understand the role of the N-H...O hydrogen bonds linking zwitterions in these chains in structural rearrangements, the crystal structures of the N-methyl derivatives of glycine (N-methylglycine, or sarcosine, with two donors for hydrogen bonding; two polymorphs of N,N-dimethylglycine, DMG-I and DMG-II, with one donor for hydrogen bond; and N,N,N-trimethylglycine, or betaine, with no hydrogen bonds) were studied at different pressures. Methylation has not only excluded the formation of selected hydrogen bonds, but also introduced bulky mobile fragments into the structure. The effects of pressure on the systems of the series were compared with respect to distorting and switching over hydrogen bonds and inducing reorientation of the methylated fragments. Phase transitions with fragmentation of the single crystals into fine powder were observed for partially methylated N-methyl- and N,N-dimethylglycine, whereas the structural changes in betaine were continuous with some peculiar features in the 1.4-2.9 GPa pressure range and accompanied by splitting of the crystals into several large fragments. Structural rearrangements in sarcosine and betaine were strongly dependent on the rate of pressure variation: the higher the rate of increasing pressure, the lower the pressure at which the phase transition occurred.
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Affiliation(s)
- Eugene A Kapustin
- Novosibirsk State University, Pirogov Street, 2, Novosibirsk 630090, Russian Federation
| | - Vasily S Minkov
- Novosibirsk State University, Pirogov Street, 2, Novosibirsk 630090, Russian Federation
| | - Elena V Boldyreva
- Novosibirsk State University, Pirogov Street, 2, Novosibirsk 630090, Russian Federation
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Liang YJ, Wang HP, Long DX, Li W, Wu YJ. A metabonomic investigation of the effects of 60 days exposure of rats to two types of pyrethroid insecticides. Chem Biol Interact 2013; 206:302-8. [PMID: 24121187 DOI: 10.1016/j.cbi.2013.10.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2013] [Revised: 08/27/2013] [Accepted: 10/01/2013] [Indexed: 12/20/2022]
Abstract
Type I and II pyrethroid insecticides display different neurotoxicity. To investigate the long-term (60 days exposure) metabolic effect of the two types of pyrethroid insecticides deltamethrin and permethrin, (1)H nuclear magnetic resonance (NMR) spectroscopy-based metabonomics was used to analyze the biochemical composition of urine and serum samples from rats administrated daily with deltamethrin or permethrin for 60 consecutive days, and principal component analysis used to visualize similarities and differences in the resultant biochemical profiles. Rats treated with either deltamethrin or permethrin displayed increased levels of urinary acetate, dimethylamine, dimethylglycine, trimethylamine and serum free amino acids, and decreased urinary 2-oxoglutarate, all of which are indicative of kidney lesions and nephrotoxicity. The reduced excretion of tricarboxylic acid cycle intermediates, together with increased 3-D-hydroxybutyrate, acetate, and lactate in treated rats could suggest disturbance of the energy metabolism, including an increased rate of anaerobic glycolysis, enhanced fatty acid β-oxidation and ketogenesis. These results show that these two types of insecticides have similarities in the urine and serum spectra, indicating that similar metabolic pathways are perturbed by the insecticides, which induced hepatotoxicity and nephrotoxicity. This approach may lead to the discovery of novel biomarkers of pyrethroids toxicity and thereby provide new insights into the toxicological mechanisms of pesticides pyrethroids.
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Affiliation(s)
- Yu-Jie Liang
- Laboratory of Molecular Toxicology, State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, PR China
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Alsayed R, Al Quobaili F, Srour S, Geisel J, Obeid R. Elevated dimethylglycine in blood of children with congenital heart defects and their mothers. Metabolism 2013; 62:1074-80. [PMID: 23481916 DOI: 10.1016/j.metabol.2013.01.024] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/07/2013] [Accepted: 01/31/2013] [Indexed: 02/05/2023]
Abstract
OBJECTIVE Congenital Heart Defects (CHD) may be related to nutritional deficiencies affecting the methylation cycle. We aimed to study the metabolic markers of the betaine homocysteine methyl transferase (BHMT) pathway in children with CHD and their mothers compared to children without CHD and their mothers. MATERIALS AND METHODS Children with CHD (n=105, age < 3 years) and mothers of 80 of the affected children were studied. The controls were non-CHDs children of comparable age as the CHD group (n=52) and their mothers (n=50). We measured serum or plasma concentrations of the metabolites of the methylation cycle homocysteine (HCY), methylmalonic acid (MMA), cystathionine, S-adenosylmethionine (SAM), S-adenosylhomocysteine (SAH), betaine, choline, and dimethylglycine (DMG). RESULTS Children with CHD had higher plasma SAM (131 vs. 100 nmol/L) and DMG (8.7 vs. 6.0 μmol/L) and lower betaine/DMG ratio (7.5 vs. 10.2) compared to the controls. Mothers of CHD children showed also higher DMG (6.1 vs. 4.1 µmol/L) and lower betaine/DMG ratio compared with the mothers of the controls. Higher SAM levels were related to higher cystathionine, MMA, betaine, choline, and DMG. MMA elevation in the patients was related to higher HCY, SAM, betaine and DMG. CONCLUSIONS Elevated DMG in CHD children and their mothers compared to the controls can indicate upregulation of the BHMT pathway in this disease group. Nutritional factors are related to metabolic imbalance during pregnancy that may be related to worse birth outcome.
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Affiliation(s)
- Ranwa Alsayed
- Damascus University, Faculty of Pharmacy, Department of Biochemistry, Damascus, Syria.
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