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Lo Sasso G, Schlage WK, Boué S, Veljkovic E, Peitsch MC, Hoeng J. The Apoe(-/-) mouse model: a suitable model to study cardiovascular and respiratory diseases in the context of cigarette smoke exposure and harm reduction. J Transl Med 2016; 14:146. [PMID: 27207171 PMCID: PMC4875735 DOI: 10.1186/s12967-016-0901-1] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Accepted: 05/07/2016] [Indexed: 02/03/2023] Open
Abstract
Atherosclerosis-prone apolipoprotein E-deficient (Apoe(-/-)) mice display poor lipoprotein clearance with subsequent accumulation of cholesterol ester-enriched particles in the blood, which promote the development of atherosclerotic plaques. Therefore, the Apoe(-/-) mouse model is well established for the study of human atherosclerosis. The systemic proinflammatory status of Apoe(-/-) mice also makes them good candidates for studying chronic obstructive pulmonary disease, characterized by pulmonary inflammation, airway obstruction, and emphysema, and which shares several risk factors with cardiovascular diseases, including smoking. Herein, we review the results from published studies using Apoe(-/-) mice, with a particular focus on work conducted in the context of cigarette smoke inhalation studies. The findings from these studies highlight the suitability of this animal model for researching the effects of cigarette smoking on atherosclerosis and emphysema.
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Affiliation(s)
- Giuseppe Lo Sasso
- />Philip Morris International R&D, Philip Morris Products S.A. (Part of Philip Morris International Group of Companies), Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | | | - Stéphanie Boué
- />Philip Morris International R&D, Philip Morris Products S.A. (Part of Philip Morris International Group of Companies), Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Emilija Veljkovic
- />Philip Morris International R&D, Philip Morris Products S.A. (Part of Philip Morris International Group of Companies), Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Manuel C. Peitsch
- />Philip Morris International R&D, Philip Morris Products S.A. (Part of Philip Morris International Group of Companies), Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
| | - Julia Hoeng
- />Philip Morris International R&D, Philip Morris Products S.A. (Part of Philip Morris International Group of Companies), Quai Jeanrenaud 5, 2000 Neuchâtel, Switzerland
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Svingen GFT, Schartum-Hansen H, Pedersen ER, Ueland PM, Tell GS, Mellgren G, Njølstad PR, Seifert R, Strand E, Karlsson T, Nygård O. Prospective Associations of Systemic and Urinary Choline Metabolites with Incident Type 2 Diabetes. Clin Chem 2016; 62:755-65. [DOI: 10.1373/clinchem.2015.250761] [Citation(s) in RCA: 61] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 02/12/2016] [Indexed: 12/13/2022]
Abstract
Abstract
BACKGROUND
Several compounds in the choline oxidation pathway are associated with insulin resistance and prevalent diabetes; however, prospective data are scarce.
We explored the relationships between systemic and urinary choline-related metabolites and incident type 2 diabetes in an observational prospective study among Norwegian patients.
METHODS
We explored risk associations by logistic regression among 3621 nondiabetic individuals with suspected stable angina pectoris, of whom 3242 provided urine samples. Reclassification of patients was investigated according to continuous net reclassification improvement (NRI >0).
RESULTS
After median (25th to 75th percentile) follow-up of 7.5 (6.4–8.7) years, 233 patients (6.4%) were registered with incident type 2 diabetes. In models adjusted for age, sex, and fasting status, plasma betaine was inversely related to new-onset disease [odds ratio (OR) per 1 SD, 0.72; 95% CI, 0.62–0.83; P < 0.00001], whereas positive associations were observed for urine betaine (1.25; 1.09–1.43; P = 0.001), dimethylglycine (1.22; 1.06–1.40; P = 0.007), and sarcosine (1.30; 1.13–1.49; P < 0.001). The associations were maintained in a multivariable model adjusting for body mass index, hemoglobin A1c, urine albumin-to-creatinine ratio, estimated glomerular filtration rate, C-reactive protein, HDL cholesterol, and medications. Plasma betaine and urine sarcosine, the indices most strongly related to incident type 2 diabetes, improved reclassification [NRI >0 (95% CI) 0.33 (0.19–0.47) and 0.16 (0.01–0.31), respectively] and showed good within-person reproducibility.
CONCLUSIONS
Systemic and urinary concentrations of several choline metabolites were associated with risk of incident type 2 diabetes, and relevant biomarkers may improve risk prediction.
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Affiliation(s)
| | | | | | - Per M Ueland
- Department of Clinical Science
- Laboratory for Clinical Biochemistry
| | - Grethe S Tell
- Department of Global Public Health and Primary Care, and
- Department of Health Registries, Norwegian Institute of Public Health, Bergen, Norway
| | - Gunnar Mellgren
- Department of Clinical Science
- Hormone Laboratory, and
- KG Jebsen Center for Diabetes Research, Department of Pediatrics, University of Bergen, Bergen, Norway
| | - Pål R Njølstad
- KG Jebsen Center for Diabetes Research, Department of Pediatrics, University of Bergen, Bergen, Norway
- Department of Pediatrics, Haukeland University Hospital, Bergen, Norway
| | | | | | | | - Ottar Nygård
- Department of Clinical Science
- Department of Heart Disease
- KG Jebsen Center for Diabetes Research, Department of Pediatrics, University of Bergen, Bergen, Norway
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53
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Leng Z, Fu Q, Yang X, Ding L, Wen C, Zhou Y. Increased fatty acid β-oxidation as a possible mechanism for fat-reducing effect of betaine in broilers. Anim Sci J 2016; 87:1005-10. [PMID: 27071487 DOI: 10.1111/asj.12524] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Revised: 07/06/2015] [Accepted: 07/21/2015] [Indexed: 11/29/2022]
Abstract
Two hundred and forty 1-day-old male Arbor Acres broiler chickens were randomly assigned to five dietary treatments with six replicates of eight chickens per replicate cage for a 42-day feeding trial. Broiler chickens were fed a basal diet supplemented with 0 (control), 250, 500, 750 or 1000 mg/kg betaine, respectively. Growth performance was not affected by betaine. Incremental levels of betaine decreased the absolute and relative weight of abdominal fat (linear P < 0.05, quadratic P < 0.01), low-density lipoprotein cholesterol (LDL-C), triglyceride (TG) and total cholesterol (TC) (linear P < 0.05), and increased concentration of nonesterified fatty acid (NEFA) (linear P = 0.038, quadratic P = 0.003) in serum of broilers. Moreover, incremental levels of betaine increased linearly (P < 0.05) the proliferator-activated receptor alpha (PPARα), the carnitine palmitoyl transferase-I (CPT-I) and 3-hydroxyacyl-coenzyme A dehydrogenase (HADH) messenger RNA (mRNA) expression, but decreased linearly (P < 0.05) the fatty acid synthase (FAS) and 3-hydroxyl-3-methylglutaryl-CoA (HMGR) mRNA expression in liver of broilers. In conclusion, this study indicated that betaine supplementation did not affect growth performance of broilers, but was effective in reducing abdominal fat deposition in a dose-dependent manner, which was probably caused by combinations of a decrease in fatty acid synthesis and an increase in β-oxidation.
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Affiliation(s)
- Zhixian Leng
- College of Animal Science and Technology, Nanjing Agricultural University, Jiangsu, Nanjing, China
| | - Qin Fu
- College of Animal Science and Technology, Nanjing Agricultural University, Jiangsu, Nanjing, China
| | - Xue Yang
- College of Animal Science and Technology, Nanjing Agricultural University, Jiangsu, Nanjing, China
| | - Liren Ding
- College of Animal Science and Technology, Nanjing Agricultural University, Jiangsu, Nanjing, China
| | - Chao Wen
- College of Animal Science and Technology, Nanjing Agricultural University, Jiangsu, Nanjing, China
| | - Yanmin Zhou
- College of Animal Science and Technology, Nanjing Agricultural University, Jiangsu, Nanjing, China
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ŠIŠKOVÁ K, DUBNIČKOVÁ M, PAŠKOVÁ Ľ, RAJDL D, ĎURAČKOVÁ Z, MUCHOVÁ J, PAULIKOVÁ I, RACEK J. Betaine Increases the Butyrylcholinesterase Activity in Rat Plasma. Physiol Res 2016; 65:101-8. [DOI: 10.33549/physiolres.933028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
The physiological function of butyrylcholinesterase (EC 3.1.1.8, BChE) is not clearly understood, but a role was suggested in the fat utilization process, resulting in positive correlation between plasma triglyceride (TG) levels and BChE activity. Consequently we tested the hypothesis that regular intake of betaine, a natural compound intervening in the liver TG metabolism could influence the BChE activity. The BChE activity was estimated spectrophotometrically in plasma of rats fed with betaine enriched standard (B) or high-fat diet (HFB). The results confirmed decreased TG plasma levels after betaine treatment independently on the type of diet (0.15±0.03 (B) vs. 0.27±0.08 (control) mmol/l; p=0.003 and 0.13±0.03 (HFB) vs. 0.27±0.08 (control) mmol/l; p=0.005). The BChE activity increased significantly with betaine administration, however the change was more distinct in the HFB group (0.84±0.34 (HFB) vs. 0.22±0.04 (control) O.D./min/mg; p<0.001 and 0.41±0.11 (B) vs. 0.22±0.04 (control) O.D./min/mg; p=0.001). In conclusion, betaine intake led to elevated BChE activity in plasma and this effect was potentiated by the HF diet. Since betaine is in general used as a supplement in the treatment of liver diseases accompanied by TG overload, its impact on the BChE activity in the role of the liver function marker should be taken into account.
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Affiliation(s)
- K. ŠIŠKOVÁ
- Institute of Clinical Biochemistry and Hematology, Faculty of Medicine, Charles University and Faculty Hospital, Pilsen, Czech Republic
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Surai P, Fisinin V. 25. Antioxidant system regulation: from vitamins to vitagenes. HANDBOOK OF CHOLESTEROL 2016. [DOI: 10.3920/978-90-8686-821-6_25] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- P.F. Surai
- Feed-Food Ltd., 53 Dongola Road, KA7 3BN Ayr, UK
- Trakia University, Studentski Grad, Stara Zagora 6000, Bulgaria
- Szent Istvan University, Godollo 2103, Hungary
- Sumy National Agrarian University, Kirova Street 160, Sumy 40021, Ukraine
- Odessa National Academy of Food Technologies, Kanatna Street 112, Odessa 65000, Ukraine
| | - V.I. Fisinin
- All Russian Institute of Poultry Husbandry, Ptitzegradskaya Street 10, Sergiev Posad, Moscow region 141311, Russia
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56
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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] [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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57
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Osorio J, Jacometo C, Zhou Z, Luchini D, Cardoso F, Loor J. Hepatic global DNA and peroxisome proliferator-activated receptor alpha promoter methylation are altered in peripartal dairy cows fed rumen-protected methionine. J Dairy Sci 2016; 99:234-44. [DOI: 10.3168/jds.2015-10157] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 09/17/2015] [Indexed: 11/19/2022]
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58
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Ge CX, Yu R, Xu MX, Li PQ, Fan CY, Li JM, Kong LD. Betaine prevented fructose-induced NAFLD by regulating LXRα/PPARα pathway and alleviating ER stress in rats. Eur J Pharmacol 2015; 770:154-64. [PMID: 26593707 DOI: 10.1016/j.ejphar.2015.11.043] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 11/19/2015] [Accepted: 11/20/2015] [Indexed: 12/28/2022]
Abstract
Betaine has been proven effective in treating nonalcoholic fatty liver disease (NAFLD) in animal models, however, its molecular mechanisms remain elusive. The aims of this study were to explore the mechanisms mediating the anti-inflammatory and anti-lipogenic actions of betaine in fructose-fed rats. In this study, betaine improved insulin resistance, reduced body weight gain and serum lipid levels, and prevented hepatic lipid accumulation in fructose-fed rats. It up-regulated hepatic expression of liver X receptor-alpha (LXRα) and peroxisome proliferator-activated receptor-alpha (PPARα), with the attenuation of the changes of their target genes, including hepatic carnitine palmitoyl transferase (CPT) 1α, glycosylphosphatidylinositol anchored high density lipoprotein binding protein 1, apolipoprotein B, sterol regulatory element-binding protein 1c and adipocyte differentiation-related protein, involved in fatty acid oxidation and lipid storage in these model rats. Furthermore, betaine alleviated ER stress and inhibited acetyl-CoA carboxylase α, CPT II, stearoyl-CoA desaturase 1 and fatty acid synthase expression involved in fatty acid synthesis in the liver of fructose-fed rats. Betaine suppressed hepatic gluconeogenesis in fructose-fed rats by moderating protein kinase B -forkhead box protein O1 pathway, as well as p38 mitogen-activated protein kinase and mammalian target of rapamycin activity. Moreover, betaine inhibited hepatic nuclear factor kappa B /nucleotide-binding domain, leucine-rich-containing family, pyrin domain-containing-3 inflammasome activation-mediated inflammation in this animal model. These results demonstrated that betaine ameliorated hepatic lipid accumulation, gluconeogenesis, and inflammation through restoring LXRα and PPARα expression and alleviating ER stress in fructose-fed rats. This study provides the potential mechanisms of betaine involved in the treatment of NAFLD.
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Affiliation(s)
- Chen-Xu Ge
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Rong Yu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Min-Xuan Xu
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Pei-Qin Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Chen-Yu Fan
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China
| | - Jian-Mei Li
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China.
| | - Ling-Dong Kong
- State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences, Nanjing University, Nanjing 210023, PR China.
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Schenkel LC, Sivanesan S, Zhang J, Wuyts B, Taylor A, Verbrugghe A, Bakovic M. Choline supplementation restores substrate balance and alleviates complications of Pcyt2 deficiency. J Nutr Biochem 2015; 26:1221-34. [PMID: 26242921 DOI: 10.1016/j.jnutbio.2015.05.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2014] [Revised: 05/24/2015] [Accepted: 05/27/2015] [Indexed: 02/07/2023]
Abstract
Choline plays a critical role in systemic lipid metabolism and hepatic function. Here we conducted a series of experiments to investigate the effect of choline supplementation on metabolically altered Pcyt2(+/-) mice. In Pcyt2(+/-) mice, the membrane phosphatidylethanolamine (PE) turnover is reduced and the formation of fatty acids (FA) and triglycerides (TAG) increased, resulting in hypertriglyceridemia, liver steatosis and obesity. One month of choline supplementation reduced the incorporation of FA into TAG and facilitated TAG degradation in Pcyt2(+/-) adipocytes, plasma and liver. Choline particularly stimulated adipocyte and liver TAG lipolysis by specific lipases (ATGL, LPL and HSL) and inhibited TAG formation by DGAT1 and DGAT2. Choline also activated the liver AMPK and mitochondrial FA oxidation gene PPARα and reduced the FA synthesis genes SREBP1, SCD1 and FAS. Liver (HPLC) and plasma (tandem mass spectroscopy and (1)H-NMR) metabolite profiling established that Pcyt2(+/-) mice have reduced membrane cholesterol/sphingomyelin ratio and the homocysteine/methionine cycle that were improved by choline supplementation. These data suggest that supplementary choline is beneficial for restoring FA and TAG homeostasis under conditions of obesity caused by impaired PE synthesis.
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Affiliation(s)
- Laila C Schenkel
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada N1G 2W1
| | - Sugashan Sivanesan
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada N1G 2W1
| | - Junzeng Zhang
- Aquatic and Crop Resource Development, National Research Council Canada, Halifax, NS, Canada B3H 3Z1
| | - Birgitte Wuyts
- Department of Clinical Chemistry, Laboratory of Metabolic Disorders, University Hospital Ghent, 9000 Ghent, Belgium
| | - Adrian Taylor
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada N1G 2W1
| | - Adronie Verbrugghe
- University of Guelph, Ontario Veterinary College, Dep. Clinical Studies, Guelph, Canada
| | - Marica Bakovic
- Department of Human Health and Nutritional Sciences, University of Guelph, Guelph, ON, Canada N1G 2W1.
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Khaire AA, Kale AA, Joshi SR. Maternal omega-3 fatty acids and micronutrients modulate fetal lipid metabolism: A review. Prostaglandins Leukot Essent Fatty Acids 2015; 98:49-55. [PMID: 25958298 DOI: 10.1016/j.plefa.2015.04.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2015] [Revised: 04/13/2015] [Accepted: 04/16/2015] [Indexed: 12/16/2022]
Abstract
It is well established that alterations in the mother's diet or metabolism during pregnancy has long-term adverse effects on the lipid metabolism in the offspring. There is growing interest in the role of specific nutrients especially omega-3 fatty acids in the pathophysiology of lipid disorders. A series of studies carried out in humans and rodents in our department have consistently suggested a link between omega-3 fatty acids especially docosahexaenoic acid and micronutrients (vitamin B12 and folic acid) in the one carbon metabolic cycle and its effect on the fatty acid metabolism, hepatic transcription factors and DNA methylation patterns. However the association of maternal intake or metabolism of these nutrients with fetal lipid metabolism is relatively less explored. In this review, we provide insights into the role of maternal omega-3 fatty acids and vitamin B12 and their influence on fetal lipid metabolism through various mechanisms which influence phosphatidylethanolamine-N-methyltransferase activity, peroxisome proliferator activated receptor, adiponectin signaling pathway and epigenetic process like chromatin methylation. This will help understand the possible mechanisms involved in fetal lipid metabolism and may provide important clues for the prevention of lipid disorders in the offspring.
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Affiliation(s)
- Amrita A Khaire
- Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune Satara Road, Pune 411043, India
| | - Anvita A Kale
- Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune Satara Road, Pune 411043, India
| | - Sadhana R Joshi
- Department of Nutritional Medicine, Interactive Research School for Health Affairs, Bharati Vidyapeeth Deemed University, Pune Satara Road, Pune 411043, India.
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61
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Stearoyl-CoA Desaturase-1: Is It the Link between Sulfur Amino Acids and Lipid Metabolism? BIOLOGY 2015; 4:383-96. [PMID: 26046927 PMCID: PMC4498306 DOI: 10.3390/biology4020383] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Revised: 05/02/2015] [Accepted: 05/14/2015] [Indexed: 12/11/2022]
Abstract
An association between sulfur amino acids (methionine, cysteine, homocysteine and taurine) and lipid metabolism has been described in several experimental and population-based studies. Changes in the metabolism of these amino acids influence serum lipoprotein concentrations, although the underlying mechanisms are still poorly understood. However, recent evidence has suggested that the enzyme stearoyl-CoA desaturase-1 (SCD-1) may be the link between these two metabolic pathways. SCD-1 is a key enzyme for the synthesis of monounsaturated fatty acids. Its main substrates C16:0 and C18:0 and products palmitoleic acid (C16:1) and oleic acid (C18:1) are the most abundant fatty acids in triglycerides, cholesterol esters and membrane phospholipids. A significant suppression of SCD-1 has been observed in several animal models with disrupted sulfur amino acid metabolism, and the activity of SCD-1 is also associated with the levels of these amino acids in humans. This enzyme also appears to be involved in the etiology of metabolic syndromes because its suppression results in decreased fat deposits (regardless of food intake), improved insulin sensitivity and higher basal energy expenditure. Interestingly, this anti-obesogenic phenotype has also been described in humans and animals with sulfur amino acid disorders, which is consistent with the hypothesis that SCD-1 activity is influenced by these amino acids, in particularly cysteine, which is a strong and independent predictor of SCD-1 activity and fat storage. In this narrative review, we discuss the evidence linking sulfur amino acids, SCD-1 and lipid metabolism.
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Warzak DA, Johnson SA, Ellersieck MR, Roberts RM, Zhang X, Ho SM, Rosenfeld CS. Effects of post-weaning diet on metabolic parameters and DNA methylation status of the cryptic promoter in the A(vy) allele of viable yellow mice. J Nutr Biochem 2015; 26:667-74. [PMID: 25818200 PMCID: PMC4431896 DOI: 10.1016/j.jnutbio.2015.01.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 12/17/2014] [Accepted: 01/09/2015] [Indexed: 01/07/2023]
Abstract
Mice carrying the A(vy) allele are epigenetic mosaics. If the majority of cells have an active (demethylated) intracisternal A particle (IAP), mice have a yellow coat color and develop adult-onset obesity and diabetes, while mice whose mosaicism predominantly reflects an inactive (methylated) IAP are pseudoagouti (brown) and less prone to metabolic disease. Brown and yellow coat color A(vy)/a post-weaning mice were placed on one of three diets [AIN, and two lower-calorie diets National Institutes of Health (NIH) and methyl-supplemented, NIHMe] to determine whether coat color, weight gain, blood glucose and methylation of hepatic IAP became altered. None of the diets altered A(vy)/a mice coat color. NIHMe did not protect against increasing obesity or the usual onset of hyperglycemia in males. Nor did it promote increased methylation of A(vy) IAP in liver tissue. By contrast, AIN, despite its higher content of fat and carbohydrate and ability to promote greater weight gains than the NIH and NIHMe diets, protected males better against hyperglycemia than either the NIH or NIHMe diets. This diet led to a significantly reduced (~50%; P = .003) average methylation state of all CpG sites within the hepatic IAP for the pseudoagouti mice. On AIN, but not on the other diets, extent of hepatic IAP methylation was negatively correlated (R = 0.97, P ≤ .001) with body weight of pseudoagouti mice. The findings indicate that post-weaning diet might influence interpretation of studies with A(vy)/a mice because IAP methylation patterns may be malleable in certain organs and influenced by post-weaning diet.
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Affiliation(s)
- Denise A Warzak
- Animal Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Sarah A Johnson
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA
| | - Mark R Ellersieck
- Agriculture Experimental Station-Statistics, University of Missouri, Columbia, MO 65211, USA
| | - R Michael Roberts
- Animal Sciences, University of Missouri, Columbia, MO 65211, USA; Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biochemistry, University of Missouri, Columbia, MO 65211, USA; Genetics Area Program, University of Missouri, Columbia, MO 65211, USA
| | - Xiang Zhang
- Department of Environmental Health, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Shuk-Mei Ho
- Department of Environmental Health, University of Cincinnati, Cincinnati, OH 45267, USA
| | - Cheryl S Rosenfeld
- Bond Life Sciences Center, University of Missouri, Columbia, MO 65211, USA; Biomedical Sciences, University of Missouri, Columbia, MO 65211, USA; Genetics Area Program, University of Missouri, Columbia, MO 65211, USA; Thompson Center for Autism and Neurodevelopmental Disorders, University of Missouri, Columbia, MO 65211, USA.
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Øyen J, Svingen GFT, Gjesdal CG, Tell GS, Ueland PM, Lysne V, Apalset EM, Meyer K, Vollset SE, Nygård OK. Plasma dimethylglycine, nicotine exposure and risk of low bone mineral density and hip fracture: the Hordaland Health Study. Osteoporos Int 2015; 26:1573-83. [PMID: 25616506 DOI: 10.1007/s00198-015-3030-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2014] [Accepted: 01/05/2015] [Indexed: 01/01/2023]
Abstract
UNLABELLED In the large community-based Hordaland Health Study, low plasma dimethylglycine was associated with low bone mineral density in both middle-aged and elderly subjects and to an increased risk of subsequent hip fracture among the elderly. These associations seemed to be particularly strong among subjects exposed to nicotine. INTRODUCTION Dimethylglycine (DMG) is a product of the choline oxidation pathway and formed from betaine during the folate-independent remethylation of homocysteine (Hcy) to methionine. Elevated plasma DMG levels are associated with atherosclerotic cardiovascular disease and inflammation, which in turn are related to osteoporosis. High plasma total Hcy and low plasma choline are associated with low bone mineral density (BMD) and hip fractures, but the role of plasma DMG in bone health is unknown. METHODS We studied the associations of plasma DMG with BMD among 5315 participants (46-49 and 71-74 years old) and with hip fracture among 3310 participants (71-74 years old) enrolled in the Hordaland Health Study. RESULTS In age and sex-adjusted logistic regression models, subjects in the lowest versus highest DMG tertile were more likely to have low BMD (odds ratio [OR] 1.68, 95% confidence interval [CI] 1.43-1.99). The association was stronger in participants exposed compared to those unexposed to nicotine (OR 2.31, 95% CI 1.73-3.07 and OR 1.43, 95% CI 1.16-1.75, respectively, p interaction = 0.008). In the older cohort, Cox regression analyses adjusted for sex showed that low plasma DMG was associated with an increased risk of hip fracture (hazard ratio [HR] 1.70, 95% CI 1.28-2.26). A trend toward an even higher risk was found among women exposed to nicotine (HR 3.41, 95% CI 1.40-8.28). CONCLUSION Low plasma DMG was associated with low BMD and increased risk of hip fractures. A potential effect modification by nicotine exposure merits particular attention.
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Affiliation(s)
- J Øyen
- Department of Rheumatology, Haukeland University Hospital, Bergen, Norway,
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Betaine alleviates hepatic lipid accumulation via enhancing hepatic lipid export and fatty acid oxidation in rats fed with a high-fat diet. Br J Nutr 2015; 113:1835-43. [DOI: 10.1017/s0007114515001130] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
To assess the effects of betaine on hepatic lipid accumulation and investigate the underlying mechanism, thirty-two male Sprague–Dawley rats weighing 100 (sd 2·50) g were divided into four groups, and started on one of four treatments: basal diet, basal diet with betaine administration, high-fat diet and high-fat diet with betaine administration. The results showed that no significant difference of body weight was found among experimental groups. Compared with high-fat diet-fed rats, a betaine supplementation decreased (P< 0·05) hepatic TAG accumulation induced by high-fat diet, which was also supported by hepatic histology results. Additionally, hepatic betaine–homocysteine methyltransferase activity as well as its mRNA abundance and lecithin level were found increased (P< 0·05) by betaine supplementation in both basal diet-fed rats and high-fat diet-fed rats. Betaine administration in high-fat diet-fed rats exhibited a higher (P< 0·05) activity of hepatic carnitine palmitoyltransferase 1 (CPT1) compared with high-fat diet-fed rats. High-fat diet inhibited (P< 0·05) the gene expression of hepatic PPARα and CPT1. However, betaine administration in high-fat diet-fed rats elevated (P< 0·05) the gene expression of PPARα and CPT1. Moreover, concentration, gene and protein expressions of hepatic fibroblast growth factor 21 (FGF21) were increased (P< 0·05) in response to betaine administration in high-fat diet group; meanwhile the gene expression of hepatic AMP-activated protein kinase was increased (P< 0·05) as well. The results suggest that betaine administration enhanced hepatic lipid export and fatty acid oxidation in high-fat diet-fed rats, thus effectively alleviating fat accumulation in the liver.
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Kim HS, Park SI, Choi SH, Song CH, Park SJ, Shin YK, Han CH, Lee YJ, Ku SK. Single oral dose toxicity test of blue honeysuckle concentrate in mice. Toxicol Res 2015; 31:61-8. [PMID: 25874034 PMCID: PMC4395656 DOI: 10.5487/tr.2015.31.1.061] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/13/2015] [Accepted: 03/16/2015] [Indexed: 11/20/2022] Open
Abstract
The objective of this study was to obtain single oral dose toxicity information for concentrated and lyophilized powder of blue honeysuckle (Lonicera caerulea L., Caprifoliaceae; BHcL) in female and male ICR mice to aid in the process of developing natural origin medicinal ingredients or foods following proximate analysis and phytochemical profile measurement. The proximate analysis revealed that BHcL had an energy value of 3.80 kcal/g and contained 0.93 g/g of carbohydrate, 0.41 g/g of sugar, 0.02 g/g of protein, and 0.20 mg/g of sodium. BHcL did not contain lipids, including saturated lipids, trans fats, or cholesterols. Further, BHcL contained 4.54% of betaine, 210.63 mg/g of total phenols, 159.30 mg/g of total flavonoids, and 133.57 mg/g of total anthocyanins. Following administration of a single oral BHcL treatment, there were no treatment-related mortalities, changes in body weight (bw) or organ weight, clinical signs, necropsy or histopathological findings up to 2,000 mg/kg bw, the limited dosage for rodents of both sexes. We concluded that BHcL is a practically non-toxic material in toxicity potency.
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Affiliation(s)
- Hyung-Soo Kim
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan, Korea
| | - Sang-In Park
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan, Korea ; The Medical Research Center for Globalization of Herbal Formulation, Daegu Haany University, Gyeongsan, Korea
| | - Seung-Hoon Choi
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan, Korea
| | - Chang-Hyun Song
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan, Korea ; The Medical Research Center for Globalization of Herbal Formulation, Daegu Haany University, Gyeongsan, Korea
| | - Soo-Jin Park
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan, Korea ; The Medical Research Center for Globalization of Herbal Formulation, Daegu Haany University, Gyeongsan, Korea
| | - Yong-Kook Shin
- Department of Natural Medicine Resources, Semyung University, Hecheon, Korea
| | - Chang-Hyun Han
- Department of Medical History & Literature Group, Korea Institute of Oriental Medicine, Daejeon, Korea
| | - Young Joon Lee
- The Medical Research Center for Globalization of Herbal Formulation, Daegu Haany University, Gyeongsan, Korea
| | - Sae-Kwang Ku
- Department of Anatomy and Histology, College of Korean Medicine, Daegu Haany University, Gyeongsan, Korea ; The Medical Research Center for Globalization of Herbal Formulation, Daegu Haany University, Gyeongsan, Korea
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Shorter KR, Felder MR, Vrana PB. Consequences of dietary methyl donor supplements: Is more always better? PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2015; 118:14-20. [PMID: 25841986 DOI: 10.1016/j.pbiomolbio.2015.03.007] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2014] [Revised: 03/11/2015] [Accepted: 03/13/2015] [Indexed: 11/16/2022]
Abstract
Epigenetic mechanisms are now recognized to play roles in disease etiology. Several diseases increasing in frequency are associated with altered DNA methylation. DNA methylation is accomplished through metabolism of methyl donors such as folate, vitamin B12, methionine, betaine (trimethylglycine), and choline. Increased intake of these compounds correlates with decreased neural tube defects, although this mechanism is not well understood. Consumption of these methyl donor pathway components has increased in recent years due to fortification of grains and high supplemental levels of these compounds (e.g. vitamins, energy drinks). Additionally, people with mutations in one of the enzymes that assists in the methyl donor pathway (5-MTHFR) are directed to consume higher amounts of methyl donors to compensate. Recent evidence suggests that high levels of methyl donor intake may also have detrimental effects. Individualized medicine may be necessary to determine the appropriate amounts of methyl donors to be consumed, particularly in women of child bearing age.
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Affiliation(s)
- Kimberly R Shorter
- University of Florida School of Medicine, Department of Psychiatry at the McKnight Brain Institute, 1149 Newell Drive, Gainesville, FL 32611, USA
| | - Michael R Felder
- University of South Carolina, Department of Biological Sciences, 715 Sumter Street, Columbia, SC 29208, USA; Peromyscus Genetic Stock Center, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA
| | - Paul B Vrana
- University of South Carolina, Department of Biological Sciences, 715 Sumter Street, Columbia, SC 29208, USA; Peromyscus Genetic Stock Center, University of South Carolina, 715 Sumter Street, Columbia, SC 29208, USA.
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Corominas J, Marchesi JAP, Puig-Oliveras A, Revilla M, Estellé J, Alves E, Folch JM, Ballester M. Epigenetic regulation of the ELOVL6 gene is associated with a major QTL effect on fatty acid composition in pigs. Genet Sel Evol 2015; 47:20. [PMID: 25887840 PMCID: PMC4371617 DOI: 10.1186/s12711-015-0111-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 03/04/2015] [Indexed: 11/16/2022] Open
Abstract
Background In previous studies on an Iberian x Landrace cross, we have provided evidence that supported the porcine ELOVL6 gene as the major causative gene of the QTL on pig chromosome 8 for palmitic and palmitoleic acid contents in muscle and backfat. The single nucleotide polymorphism (SNP) ELOVL6:c.-533C > T located in the promoter region of ELOVL6 was found to be highly associated with ELOVL6 expression and, accordingly, with the percentages of palmitic and palmitoleic acids in longissimus dorsi and adipose tissue. The main goal of the current work was to further study the role of ELOVL6 on these traits by analyzing the regulation of the expression of ELOVL6 and the implication of ELOVL6 polymorphisms on meat quality traits in pigs. Results High-throughput sequencing of BAC clones that contain the porcine ELOVL6 gene coupled to RNAseq data re-analysis showed that two isoforms of this gene are expressed in liver and adipose tissue and that they differ in number of exons and 3’UTR length. Although several SNPs in the 3’UTR of ELOVL6 were associated with palmitic and palmitoleic acid contents, this association was lower than that previously observed with SNP ELOVL6:c.-533C > T. This SNP is in full linkage disequilibrium with SNP ELOVL6:c.-394G > A that was identified in the binding site for estrogen receptor alpha (ERα). Interestingly, the ELOVL6:c.-394G allele is associated with an increase in methylation levels of the ELOVL6 promoter and with a decrease of ELOVL6 expression. Therefore, ERα is clearly a good candidate to explain the regulation of ELOVL6 expression through dynamic epigenetic changes in the binding site of known regulators of ELOVL6 gene, such as SREBF1 and SP1. Conclusions Our results strongly suggest the ELOVL6:c.-394G > A polymorphism as the causal mutation for the QTL on pig chromosome 8 that affects fatty acid composition in pigs. Electronic supplementary material The online version of this article (doi:10.1186/s12711-015-0111-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jordi Corominas
- Plant and Animal Genomics, Centre de Recerca en Agrigenòmica (Consorci CSIC-IRTA-UAB-UB), Edifici CRAG, Campus UAB, Bellaterra, Barcelona, 08193, Spain. .,Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Campus UAB, Bellaterra, Barcelona, 08193, Spain.
| | - Jorge A P Marchesi
- Plant and Animal Genomics, Centre de Recerca en Agrigenòmica (Consorci CSIC-IRTA-UAB-UB), Edifici CRAG, Campus UAB, Bellaterra, Barcelona, 08193, Spain.
| | - Anna Puig-Oliveras
- Plant and Animal Genomics, Centre de Recerca en Agrigenòmica (Consorci CSIC-IRTA-UAB-UB), Edifici CRAG, Campus UAB, Bellaterra, Barcelona, 08193, Spain. .,Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Campus UAB, Bellaterra, Barcelona, 08193, Spain.
| | - Manuel Revilla
- Plant and Animal Genomics, Centre de Recerca en Agrigenòmica (Consorci CSIC-IRTA-UAB-UB), Edifici CRAG, Campus UAB, Bellaterra, Barcelona, 08193, Spain. .,Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Campus UAB, Bellaterra, Barcelona, 08193, Spain.
| | - Jordi Estellé
- INRA, UMR 1313, Génétique Animale et Biologie Intégrative, Jouy-en-Josas F, 78352, France. .,AgroParisTech, UMR 1313 Génétique Animale et Biologie Intégrative, Jouy-en-Josas F, 78352, France. .,CEA, DSV/iRCM/SREIT/LREG, Jouy-en-Josas F, 78352, France.
| | - Estefânia Alves
- Departamento de Mejora Genética Animal, INIA, Ctra. de la Coruña km. 7, Madrid, 28040, Spain.
| | - Josep M Folch
- Plant and Animal Genomics, Centre de Recerca en Agrigenòmica (Consorci CSIC-IRTA-UAB-UB), Edifici CRAG, Campus UAB, Bellaterra, Barcelona, 08193, Spain. .,Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Campus UAB, Bellaterra, Barcelona, 08193, Spain.
| | - Maria Ballester
- Plant and Animal Genomics, Centre de Recerca en Agrigenòmica (Consorci CSIC-IRTA-UAB-UB), Edifici CRAG, Campus UAB, Bellaterra, Barcelona, 08193, Spain. .,Departament de Ciència Animal i dels Aliments, Facultat de Veterinària, Campus UAB, Bellaterra, Barcelona, 08193, Spain.
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Wang X, Zhu L, Chen J, Wang Y. mRNA m⁶A methylation downregulates adipogenesis in porcine adipocytes. Biochem Biophys Res Commun 2015; 459:201-207. [PMID: 25725156 DOI: 10.1016/j.bbrc.2015.02.048] [Citation(s) in RCA: 83] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2015] [Accepted: 02/10/2015] [Indexed: 11/16/2022]
Abstract
Fat Mass and Obesity-associated protein (FTO), associated with obesity, is proved to demethylate N6-methyladenosine (m(6)A), which raises questions regarding whether m(6)A plays vital roles in adipogenesis. To prove this, overexpression and knockdown of FTO and METTL3, as well as the chemical treatment in procine adipocytes were conducted. The results showed FTO negatively regulated m(6)A levels and positively regulated adipogenesis, while METTL3 positively correlated with m(6)A levels and negatively with adipogenesis. To remove the potential effect of FTO and METTL3 gene, chemical reagents of methylation inhibitor cycloleucine and methyl donor betaine were used to test the regulation effect of m(6)A on adipogenesis. The results showed the inverse effect of m(6)A on lipid accumulation in porcine adipocytes. These findings provide compelling evidence that m(6)A plays a critical role in the regulation of adipogenesis.
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Affiliation(s)
- Xinxia Wang
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition & Feed Sciences, Ministry of Agriculture, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Linna Zhu
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition & Feed Sciences, Ministry of Agriculture, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Jingqing Chen
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition & Feed Sciences, Ministry of Agriculture, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China
| | - Yizhen Wang
- College of Animal Sciences, Zhejiang University, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Key Laboratory of Animal Nutrition & Feed Sciences, Ministry of Agriculture, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China; Zhejiang Provincial Laboratory of Feed and Animal Nutrition, No. 866 Yuhangtang Road, Hangzhou, Zhejiang 310058, China.
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Kang MR, Lee CW, Cho IJ, Lee MY, Shin JH, Oh SJ, Yun J, Yoon WK, Han SB, Kim EE, Bok SH, Kang JS. Betaine Supplementation Improves Beneficial Effects of Boxthorn (L
ycium chinense
Mill.) Leaf on Body Weight/Body Fat Increase and Plasma/Liver Triglycerides Accumulation in High-Fat Diet-Fed C57BL/6 Mice. J Food Biochem 2014. [DOI: 10.1111/jfbc.12099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Moo Rim Kang
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Chang Woo Lee
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Ig Jun Cho
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Myeong Youl Lee
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Jung Hyu Shin
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Soo Jin Oh
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Jieun Yun
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Won Kee Yoon
- Biomedical Mouse Resource Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
| | - Sang-Bae Han
- College of Pharmacy; Chungbuk National University; Cheongju Chungbuk 361-763 Korea
| | - Eun Eai Kim
- Bionutrigen Co., Ltd.; Daejon Chungnam 305-806 Korea
| | - Song-Hae Bok
- Bionutrigen Co., Ltd.; Daejon Chungnam 305-806 Korea
| | - Jong Soon Kang
- Bioevaluation Center; Korea Research Institute of Bioscience and Biotechnology; Ochang Chungbuk 363-883 Korea
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The effects of choline on hepatic lipid metabolism, mitochondrial function and antioxidative status in human hepatic C3A cells exposed to excessive energy substrates. Nutrients 2014; 6:2552-71. [PMID: 25010553 PMCID: PMC4113756 DOI: 10.3390/nu6072552] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 06/12/2014] [Accepted: 06/18/2014] [Indexed: 01/21/2023] Open
Abstract
Choline plays a lipotropic role in lipid metabolism as an essential nutrient. In this study, we investigated the effects of choline (5, 35 and 70 μM) on DNA methylation modifications, mRNA expression of the critical genes and their enzyme activities involved in hepatic lipid metabolism, mitochondrial membrane potential (Δψm) and glutathione peroxidase (GSH-Px) in C3A cells exposed to excessive energy substrates (lactate, 10 mM; octanoate, 2 mM and pyruvate, 1 mM; lactate, octanoate and pyruvate-supplemented medium (LOP)). Thirty five micromole or 70 μM choline alone, instead of a low dose (5 μM), reduced hepatocellular triglyceride (TG) accumulation, protected Δψm from decrement and increased GSH-Px activity in C3A cells. The increment of TG accumulation, reactive oxygen species (ROS) production and Δψm disruption were observed under LOP treatment in C3A cells after 72 h of culture, which were counteracted by concomitant treatment of choline (35 μM or 70 μM) partially via reversing the methylation status of the peroxisomal proliferator-activated receptor alpha (PPARα) gene promoter, upregulating PPARα, carnitine palmitoyl transferase-I (CPT-I) and downregulating fatty acid synthase (FAS) gene expression, as well as decreasing FAS activity and increasing CPT-I and GSH-Px activities. These findings provided a novel insight into the lipotropic role of choline as a vital methyl-donor in the intervention of chronic metabolic diseases.
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Kalafati IP, Borsa D, Dedoussis GVZ. The Genetics of Nonalcoholic Fatty Liver Disease: Role of Diet as a Modifying Factor. Curr Nutr Rep 2014. [DOI: 10.1007/s13668-014-0085-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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72
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Betaine supplementation protects against high-fructose-induced renal injury in rats. J Nutr Biochem 2014; 25:353-62. [DOI: 10.1016/j.jnutbio.2013.11.010] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2013] [Revised: 11/18/2013] [Accepted: 11/18/2013] [Indexed: 01/26/2023]
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Wang LJ, Zhang HW, Zhou JY, Liu Y, Yang Y, Chen XL, Zhu CH, Zheng RD, Ling WH, Zhu HL. Betaine attenuates hepatic steatosis by reducing methylation of the MTTP promoter and elevating genomic methylation in mice fed a high-fat diet. J Nutr Biochem 2013; 25:329-36. [PMID: 24456734 DOI: 10.1016/j.jnutbio.2013.11.007] [Citation(s) in RCA: 101] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2013] [Revised: 11/08/2013] [Accepted: 11/16/2013] [Indexed: 01/04/2023]
Abstract
Aberrant DNA methylation contributes to the abnormality of hepatic gene expression, one of the main factors in the pathogenesis of nonalcoholic fatty liver disease (NAFLD). Betaine is a methyl donor and has been considered to be a lipotropic agent. However, whether betaine supplementation improves NAFLD via its effect on the DNA methylation of specific genes and the genome has not been explored. Male C57BL/6 mice were fed either a control diet or high-fat diet (HFD) supplemented with 0%, 1% and 2% betaine in water (wt/vol) for 12 weeks. Betaine supplementation ameliorated HFD-induced hepatic steatosis in a dose-dependent manner. HFD up-regulated FAS and ACOX messenger RNA (mRNA) expression and down-regulated PPARα, ApoB and MTTP mRNA expression; however, these alterations were reversed by betaine supplementation, except ApoB. MTTP mRNA expression was negatively correlated with the DNA methylation of its CpG sites at -184, -156, -63 and -60. Methylation of these CpG sites was lower in both the 1% and 2% betaine-supplemented groups than in the HFD group (averages; 25.55% and 14.33% vs. 30.13%). In addition, both 1% and 2% betaine supplementation significantly restored the methylation capacity [S-adenosylmethionine (SAM) concentration and SAM/S-adenosylhomocysteine ratios] and genomic methylation level, which had been decreased by HFD (0.37% and 0.47% vs. 0.25%). These results suggest that the regulation of aberrant DNA methylation by betaine might be a possible mechanism of the improvements in NAFLD upon betaine supplementation.
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Affiliation(s)
- Li-jun Wang
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China
| | - Hong-wei Zhang
- Department of Hepatobiliary Surgery, Sun Yat-Sen Memorial Hospital, University of Sun Yat-Sen, 510120 Guangzhou, People's Republic of China
| | - Jing-ya Zhou
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China
| | - Yan Liu
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China
| | - Yang Yang
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China
| | - Xiao-ling Chen
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China
| | - Cui-hong Zhu
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China
| | - Rui-dan Zheng
- Research and Therapy Center for Liver Disease, the Affiliated Dongnan Hospital of Xiamen University, 363000 Zhangzhou, People's Republic of China
| | - Wen-hua Ling
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China
| | - Hui-lian Zhu
- Faculty of Nutrition, School of Public Health, Sun Yat-Sen University, 510080 Guangzhou, People's Republic of China.
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Medici V, Shibata NM, Kharbanda KK, Islam MS, Keen CL, Kim K, Tillman B, French SW, Halsted CH, LaSalle JM. Maternal choline modifies fetal liver copper, gene expression, DNA methylation, and neonatal growth in the tx-j mouse model of Wilson disease. Epigenetics 2013; 9:286-96. [PMID: 24220304 DOI: 10.4161/epi.27110] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Maternal diet can affect fetal gene expression through epigenetic mechanisms. Wilson disease (WD), which is caused by autosomal recessive mutations in ATP7B encoding a biliary copper transporter, is characterized by excessive hepatic copper accumulation, but variability in disease severity. We tested the hypothesis that gestational supply of dietary methyl groups modifies fetal DNA methylation and expression of genes involved in methionine and lipid metabolism that are impaired prior to hepatic steatosis in the toxic milk (tx-j) mouse model of WD. Female C3H control and tx-j mice were fed control (choline 8 mmol/Kg of diet) or choline-supplemented (choline 36 mmol/Kg of diet) diets for 2 weeks throughout mating and pregnancy to gestation day 17. A second group of C3H females, half of which were used to cross foster tx-j pups, received the same diet treatments that extended during lactation to 21 d postpartum. Compared with C3H, fetal tx-j livers had significantly lower copper concentrations and significantly lower transcript levels of Cyclin D1 and genes related to methionine and lipid metabolism. Maternal choline supplementation prevented the transcriptional deficits in fetal tx-j liver for multiple genes related to cell growth and metabolism. Global DNA methylation was increased by 17% in tx-j fetal livers after maternal choline treatment (P<0.05). Maternal dietary choline rescued the lower body weight of 21 d tx-j mice. Our results suggest that WD pathogenesis is modified by maternal in utero factors, including dietary choline.
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Affiliation(s)
- Valentina Medici
- Department of Internal Medicine; Division of Gastroenterology and Hepatology; University of California Davis; Davis, CA USA
| | - Noreene M Shibata
- Department of Internal Medicine; Division of Gastroenterology and Hepatology; University of California Davis; Davis, CA USA
| | - Kusum K Kharbanda
- Research Service; Veterans Affairs Nebraska-Western Iowa Health Care System; Omaha, NE USA
| | - Mohammad S Islam
- Department of Medical Microbiology and Immunology; Genome Center; MIND Institute; University of California Davis; Davis, CA USA
| | - Carl L Keen
- Department of Nutrition; University of California Davis; Davis, CA USA
| | - Kyoungmi Kim
- Department of Public Health Sciences; Division of Biostatistics; University of California Davis; Davis, CA USA
| | - Brittany Tillman
- Department of Pathology; UCLA/Harbor Medical Center; Torrance, CA USA
| | - Samuel W French
- Department of Pathology; UCLA/Harbor Medical Center; Torrance, CA USA
| | - Charles H Halsted
- Department of Internal Medicine; Division of Gastroenterology and Hepatology; University of California Davis; Davis, CA USA
| | - Janine M LaSalle
- Department of Medical Microbiology and Immunology; Genome Center; MIND Institute; University of California Davis; Davis, CA USA
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