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Li W, Jia Y, Gong Z, Dong Z, Yu F, Fu Y, Jiang C, Kong W. Ablation of the gut microbiota alleviates high-methionine diet-induced hyperhomocysteinemia and glucose intolerance in mice. NPJ Sci Food 2023; 7:36. [PMID: 37460578 DOI: 10.1038/s41538-023-00212-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 07/12/2023] [Indexed: 07/20/2023] Open
Abstract
A high-methionine (HM) diet leads to hyperhomocysteinemia (HHcy), while gastrointestinal tissue is an important site of net homocysteine (Hcy) production. However, the role of the gut microbiota in host HHcy remains obscure. This study aimed to determine whether gut microbiota ablation could alleviate host HHcy and glucose intolerance and reveal the underlying mechanism. The results showed that the HM diet-induced HHcy and glucose intolerance in mice, while antibiotic administration decreased the plasma level of Hcy and reversed glucose intolerance. HM diet increased intestinal epithelial homocysteine levels, while antibiotic treatment decreased intestinal epithelial homocysteine levels under the HM diet. Gut microbiota depletion had no effect on the gene expression and enzyme activity of CBS and BHMT in the livers of HM diet-fed mice. The HM diet altered the composition of the gut microbiota with marked increases in the abundances of Faecalibaculum and Dubosiella, which were also positively correlated with plasma Hcy concentrations. An in-depth analysis of the bacterial cysteine and methionine metabolism pathways showed that the abundances of two homocysteine biosynthesis-related KEGG orthologies (KOs) were markedly increased in the gut microbiota in HM diet-fed mice. Hcy was detected from Dubosiella newyorkensis-cultured supernatant by liquid chromatography-tandem mass spectrometry (LC‒MS) analysis. In conclusion, these findings suggested that the HM diet-induced HHcy and glucose intolerance in mice, by reshaping the composition of the gut microbiota, which might produce and secrete Hcy.
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Affiliation(s)
- Wenqiang Li
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Yiting Jia
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Ze Gong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Zhao Dong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Fang Yu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Yi Fu
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China
| | - Changtao Jiang
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China.
- Center of Basic Medical Research, Institute of Medical Innovation and Research, Third Hospital, Peking University, Beijing, China.
- Center for Obesity and Metabolic Disease Research, School of Basic Medical Sciences, Peking University, Beijing, China.
| | - Wei Kong
- Department of Physiology and Pathophysiology, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China.
- State Key Laboratory of Vascular Homeostasis and Remodeling, Peking University, Beijing, China.
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Shih YL, Shih CC, Huang TC, Chen JY. The Relationship between Elevated Homocysteine and Metabolic Syndrome in a Community-Dwelling Middle-Aged and Elderly Population in Taiwan. Biomedicines 2023; 11:378. [PMID: 36830912 PMCID: PMC9952893 DOI: 10.3390/biomedicines11020378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 01/12/2023] [Accepted: 01/19/2023] [Indexed: 01/31/2023] Open
Abstract
(1) Background: Metabolic syndrome has become a serious health problem in society. Homocysteine is a biomarker for cardiovascular disease. We investigated the relationship between homocysteine levels and metabolic syndrome. (2) Methods: A total of 398 middle-aged and elderly individuals were included in our study. First, we divided the participants into two groups: the metabolic syndrome group and the nonmetabolic syndrome group. Second, according to tertiles of homocysteine levels from low to high, the participants were divided into first, second, and third groups. Pearson's correlation was then calculated for homocysteine levels and metabolic factors. Scatterplots are presented. Finally, the risk of metabolic syndrome in the second and third groups compared with the first group was assessed by multivariate logistic regression. (3) Results: In our study, the metabolic syndrome group had higher homocysteine levels, and the participants in the third group were more likely to have metabolic syndrome. Multivariate logistic regression revealed that the third group, which had the highest homocysteine level, was associated with metabolic syndrome with an odds ratio of 2.32 compared with the first group after adjusting for risk factors. (4) Conclusions: We concluded that high plasma homocysteine levels were independently associated with MetS in our study population.
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Affiliation(s)
- Yu-Lin Shih
- Department of Family Medicine, Chang-Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Chin-Chuan Shih
- United Safety Medical Group, General Administrative Department, New Taipei City 242, Taiwan
| | - Tzu-Cheng Huang
- Department of Family Medicine, Chang-Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
| | - Jau-Yuan Chen
- Department of Family Medicine, Chang-Gung Memorial Hospital, Linkou Branch, Taoyuan 333, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 333, Taiwan
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3
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Cunnane SC, Swerdlow RH, Inzitari M, Olaso-Gonzalez G, Viña J. Multimodal strategy to rescue the brain in mild cognitive impairment: Ketogenic oral nutrition supplementation with B vitamins and aerobic exercise. Eur J Clin Invest 2022; 52:e13806. [PMID: 35488743 PMCID: PMC9541319 DOI: 10.1111/eci.13806] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/08/2022] [Accepted: 04/19/2022] [Indexed: 11/29/2022]
Affiliation(s)
- Stephen C Cunnane
- Research Center on Aging and Department of Medicine, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Russell H Swerdlow
- University of Kansas Alzheimer's Disease Center, KUMC Neurodegenerative Disorders Program, University of Kansas School of Medicine, Lawrence, Kansas, USA
| | - Marco Inzitari
- REFiT Barcelona Research Group, Parc Sanitari Pere Virgili and Vall d'Hebrón Institute of Research, Barcelona, Spain.,Department of Health Sciences, Universitat Oberta de Catalonia, Barcelona, Spain
| | - Gloria Olaso-Gonzalez
- Department of Physiology, Faculty of Medicine, Universitat de València, Valencia, Spain
| | - José Viña
- Department of Physiology, Faculty of Medicine, Universitat de València, Valencia, Spain
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Homocysteine Metabolism Pathway Is Involved in the Control of Glucose Homeostasis: A Cystathionine Beta Synthase Deficiency Study in Mouse. Cells 2022; 11:cells11111737. [PMID: 35681432 PMCID: PMC9179272 DOI: 10.3390/cells11111737] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Revised: 05/16/2022] [Accepted: 05/20/2022] [Indexed: 12/13/2022] Open
Abstract
Cystathionine beta synthase (CBS) catalyzes the first step of the transsulfuration pathway from homocysteine to cystathionine, and its deficiency leads to hyperhomocysteinemia (HHcy) in humans and rodents. To date, scarce information is available about the HHcy effect on insulin secretion, and the link between CBS activity and the setting of type 2 diabetes is still unknown. We aimed to decipher the consequences of an inborn defect in CBS on glucose homeostasis in mice. We used a mouse model heterozygous for CBS (CBS+/−) that presented a mild HHcy. Other groups were supplemented with methionine in drinking water to increase the mild to intermediate HHcy, and were submitted to a high-fat diet (HFD). We measured the food intake, body weight gain, body composition, glucose homeostasis, plasma homocysteine level, and CBS activity. We evidenced a defect in the stimulated insulin secretion in CBS+/− mice with mild and intermediate HHcy, while mice with intermediate HHcy under HFD presented an improvement in insulin sensitivity that compensated for the decreased insulin secretion and permitted them to maintain a glucose tolerance similar to the CBS+/+ mice. Islets isolated from CBS+/− mice maintained their ability to respond to the elevated glucose levels, and we showed that a lower parasympathetic tone could, at least in part, be responsible for the insulin secretion defect. Our results emphasize the important role of Hcy metabolic enzymes in insulin secretion and overall glucose homeostasis.
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Zhao J, Li Z, Hou C, Sun F, Dong J, Chu X, Guo Y. Gender differences in risk factors for high plasma homocysteine levels based on a retrospective checkup cohort using a generalized estimating equation analysis. Lipids Health Dis 2021; 20:31. [PMID: 33845846 PMCID: PMC8042914 DOI: 10.1186/s12944-021-01459-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Accepted: 03/30/2021] [Indexed: 11/23/2022] Open
Abstract
Background Hyperhomocysteinemia (HHcy) is associated with various health problems, but less is known about the gender differences in risk factors for high plasma homocysteine (Hcy) levels. Methods In this study, a retrospective study was carried out on 14,911 participants (7838 males and 7073 females) aged 16–102 years who underwent routine checkups between January 2012 and December 2017 in the Health Management Department of Xuanwu Hospital, China. Anthropometric measurements, including body mass index (BMI) and waist-to-hip ratio, were collected. Fasting blood samples were collected to measure the biochemical indexes. The outcome variable was Hcy level, and a generalized estimating equation (GEE) analysis was used to identify the associations of interest based on gender. Results Males exhibited increased Hcy levels (16.37 ± 9.66 vs 11.22 ± 4.76 μmol/L) and prevalence of HHcy (37.0% vs 11.3%) compared with females. Hcy levels and HHcy prevalence increased with age in both genders, except for the 16- to 29-year-old group. GEE analysis indicated that irrespective of gender, aspartate aminotransferase, creatinine, uric acid, low-density lipoprotein cholesterol and high-density lipoprotein cholesterol levels were positively correlated with Hcy levels, and alanine aminotransferase, total cholesterol and glucose were negatively correlated with Hcy levels. However, age, BMI and triglycerides (TGs) were positively correlated with Hcy levels exclusively in females. Conclusions Gender differences in risk factors for high plasma Hcy levels were noted. Although common correlational factors existed in both genders, age, BMI and TGs were independent risk factors for Hcy levels specifically in females.
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Affiliation(s)
- Jing Zhao
- Health Management Department, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Zhihua Li
- Information Center, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Chengbei Hou
- Department of Evidence-based Medicine, Xuanwu Hospital, Capital Medical University, Beijing, China
| | - Fei Sun
- Beijing Geriatric Healthcare Center, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Jing Dong
- Health Management Department, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, 100053, China
| | - Xi Chu
- Health Management Department, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, 100053, China.
| | - Yansu Guo
- Beijing Geriatric Healthcare Center, Xuanwu Hospital, Capital Medical University, No. 45 Changchun Street, Xicheng District, Beijing, 100053, China.
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Micheletti PL, Carla-da-Silva J, Scandolara TB, Kern R, Alves VD, Malanowski J, Victorino VJ, Herrera ACSA, Rech D, Souza JAO, Simão ANC, Panis C, Dichi I. Proinflammatory circulating markers: new players for evaluating asymptomatic acute cardiovascular toxicity in breast cancer treatment. J Chemother 2021; 33:106-115. [PMID: 33480330 DOI: 10.1080/1120009x.2021.1873632] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
PURPOSE This study aimed to evaluate markers of cardiac damage (total CK, CKMB and CRP), inflammatory markers (free iron, homocysteine and TNF-α) as well as lipidogram in breast cancer patients undergoing acute cycles of doxorubicin (DOX), paclitaxel (PTX) or trastuzumab (TZ) and to verify if there is an association between these markers and the toxicity of the chemotherapeutic treatment. Methods: Included in the study were 120 breast cancer patients and 50 healthy controls. All analyzes were performed on automated systems. For the statistical analysis, each group was compared with the controls according to their normality by Student's t-test and Mann-Whitney test. Results: Our results showed that DOX treatment led to increased hsCRP (4.80 ± 1.23 mg/dL, p = 0.0005), triglycerides (187.6 ± 25.06, p = 0.0231), TNF-α (42.31 ± 17.96 pg/mL, p = 0.01) and Fe levels (138.8 ± 18.6 μg/dL, p = 0.0193). In the meantime, PTX induced changes in CK-MB (8.78 ± 4.2 U/L, p = 0.0361), hsCRP (7.12 ± 1.87 mg/dL, p = 0.0006), cholesterol (201.7 ± 19.54, p = 0.05), triglycerides (201.7 ± 19.54, p = 0.0277), TNF-α (38.27 ± 9.12 pg/mL, p = 0.023), homocysteine (10.95 ± 0, 86 μmol/L, p = 0.005), and free iron (113 ± 18 6 μg/dL, p = 0.045) while TZ augmented CK-MB (6.9 ± 1.97 U/L, p < 0.00), hsPCR (3.12 ± 0.68 mg/dL, p = 0.095), cholesterol (218.3 ± 16.79, p = 0.0317), triglycerides (218.3 ± 16.79, p = 0.0127), TNF-α (89.6 ± 12.11, p = 0.032), homocysteine (9.95 ± 1.15 μmol/L, p = 0.0396), free iron (120.5 ± 4.64 μg/dl, p = 0.0058) as well. Conclusions: Our data demonstrated the existence of a proinflammatory net triggered by breast cancer chemotherapy that could increase cardiomyocytes permeability and allow the leakage of circulating proteins as CK-MB and induce the production of hsCRP.
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Affiliation(s)
- P L Micheletti
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Estadual de Londrina, Paraná, Brazil
| | - J Carla-da-Silva
- Laboratório de Biologia de Tumores, Universidade Estadual do Oeste do Paraná, Paraná, Brazil
| | - T B Scandolara
- Laboratório de Biologia de Tumores, Universidade Estadual do Oeste do Paraná, Paraná, Brazil
| | - R Kern
- Laboratório de Biologia de Tumores, Universidade Estadual do Oeste do Paraná, Paraná, Brazil
| | - V D Alves
- Laboratório de Biologia de Tumores, Universidade Estadual do Oeste do Paraná, Paraná, Brazil
| | - J Malanowski
- Laboratório de Biologia de Tumores, Universidade Estadual do Oeste do Paraná, Paraná, Brazil
| | - V J Victorino
- Instituto Federal do Rio de Janeiro, Campus Engenheiro Paulo de Frontin, Rio de Janeiro, Brazil
| | - A C S A Herrera
- Pontifícia Universidade Católica de Londrina, Paraná, Brazil
| | - D Rech
- Laboratório de Biologia de Tumores, Universidade Estadual do Oeste do Paraná, Paraná, Brazil.,Hospital de Câncer de Francisco Beltrão, Ceonc, Paraná, Brazil
| | - J A O Souza
- Hospital de Câncer de Francisco Beltrão, Ceonc, Paraná, Brazil
| | - A N C Simão
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Estadual de Londrina, Paraná, Brazil
| | - C Panis
- Laboratório de Biologia de Tumores, Universidade Estadual do Oeste do Paraná, Paraná, Brazil
| | - I Dichi
- Programa de Pós-Graduação em Ciências da Saúde, Universidade Estadual de Londrina, Paraná, Brazil
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Samie KA, Tabandeh MR, Afrough M. Betaine ameliorates impaired steroidogenesis and apoptosis in mice granulosa cells induced by high glucose concentration. Syst Biol Reprod Med 2020; 66:400-409. [PMID: 32981384 DOI: 10.1080/19396368.2020.1811423] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Betaine is a bioactive peptide whose beneficial effects on diabetes complications have been considered, previously. The present study aimed to investigate the possible protective effects of betaine against hyperglycemia-induced steroidogenesis impairment and apoptosis in mice granulosa cells. Ovarian granulosa cells were isolated from C57/BL6 mice and cultured in steroidogenesis medium (SM) containing 30 ng/ml FSH and 0.5 µM testosterone. The cells were cultured in SM containing low (5 mM) or high (30 mM) glucose concentrations for 24 h in the presence or absence of betaine (5 mM). At the end of the experiment, estradiol and progesterone were measured by ELISA in the culture medium. Expression of apoptosis and steroidogenesis associated genes and caspase-3 activity were determined by qRT-PCR and colorimetric assays, respectively. Exposure of mice granulosa cells to high glucose concentration inhibited the steroidogenesis by decreasing estradiol and progesterone secretion and downregulation of steroidogenesis-related genes including 3βHSD, Cyp11a1, Cyp19a1, and StAR. Betaine treatment could ameliorate the steroidogenesis impairment at molecular and biochemical levels. High glucose concentration also enhanced apoptosis in mice granulosa cells that were characterized by elevation of caspase-3 activity, upregulation of bax gene and downregulation of bcl2 gene. Betaine treatment could attenuate the apoptotic-related changes induced by high glucose concentration in granulosa cells. According to the results of the present study, betaine could ameliorate the adverse effects of hyperglycemia on the physiological function of ovarian granulosa cells. The results highlight the potential role of betaine for the intervention of ovarian dysfunction in diabetic patients. Abbreviations: AABA: Betaine-α-aminobutyric acid; AGEs: Advanced glycation end products; bax: bcl2 Associated X; bcl2: B-cell lymphoma 2; AMPK: AMP-activated protein kinase; BHMT: Betaine homocysteine methyltransferase; C/EBP: CCAAT-enhancer-binding proteins; Cyp11a1: Cholesterol side-chain cleavage cytochrome P450; Cyp19a1: Cytochrome P450 aromatase; DM: Diabetes mellitus; E2: Estradiol; ERS: Endoplasmic reticulum stress; GCs: Granulosa cells; GLUT: Glucose transporter; FSH: Follicle-stimulating hormone; 3βHSD: 3β-hydroxysteroid dehydrogenase; IL-1β: interleukin-1ß; LH: Luteinizing hormone; MDCK: Madin-Darby Canine Kidney cell; MT: Methionine synthase, MTT: 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide; NLRP3: NLR Family Pyrin Domain Containing 3; NF-κB: Nuclear factor κB; P4: Progesterone; ROS: Reactive oxygen species; SGLT: Sodium dependent glucose transporter; SLC7A6: Solute Carrier Family 7 Member 6; StAR: Steroidogenic acute regulatory protein; STZ: Streptozotocin; Tumor necrosis factor α: TNF-α; TXNIP: Thioredoxin interacting protein.
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Affiliation(s)
- Kosar Abbasi Samie
- Department of Basic Sciences, Division of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz , Ahvaz, Iran
| | - Mohammad Reza Tabandeh
- Department of Basic Sciences, Division of Biochemistry and Molecular Biology, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz , Ahvaz, Iran.,Department of Basic Sciences, Faculty of Veterinary Medicine, Shahid Chamran University of Ahvaz , Ahvaz, Iran
| | - Mahsa Afrough
- Reproductive Biology Research Group, Infertility Research and Treatment Center of Khuzestan, ACECR , Ahvaz, Iran
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8
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Hwang ES, Song SB. Possible Adverse Effects of High-Dose Nicotinamide: Mechanisms and Safety Assessment. Biomolecules 2020; 10:E687. [PMID: 32365524 PMCID: PMC7277745 DOI: 10.3390/biom10050687] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 04/20/2020] [Accepted: 04/21/2020] [Indexed: 12/21/2022] Open
Abstract
Nicotinamide (NAM) at doses far above those recommended for vitamins is suggested to be effective against a wide spectrum of diseases and conditions, including neurological dysfunctions, depression and other psychological disorders, and inflammatory diseases. Recent increases in public awareness on possible pro-longevity effects of nicotinamide adenine dinucleotide (NAD+) precursors have caused further growth of NAM consumption not only for clinical treatments, but also as a dietary supplement, raising concerns on the safety of its long-term use. However, possible adverse effects and their mechanisms are poorly understood. High-level NAM administration can exert negative effects through multiple routes. For example, NAM by itself inhibits poly(ADP-ribose) polymerases (PARPs), which protect genome integrity. Elevation of the NAD+ pool alters cellular energy metabolism. Meanwhile, high-level NAM alters cellular methyl metabolism and affects methylation of DNA and proteins, leading to changes in cellular transcriptome and proteome. Also, methyl metabolites of NAM, namely methylnicotinamide, are predicted to play roles in certain diseases and conditions. In this review, a collective literature search was performed to provide a comprehensive list of possible adverse effects of NAM and to provide understanding of their underlying mechanisms and assessment of the raised safety concerns. Our review assures safety in current usage level of NAM, but also finds potential risks for epigenetic alterations associated with chronic use of NAM at high doses. It also suggests directions of the future studies to ensure safer application of NAM.
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Affiliation(s)
- Eun Seong Hwang
- Department of Life Science, University of Seoul, Dongdaemun-gu, Seoulsiripdae-ro 163, Seoul 02504, Korea
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Fan CD, Sun JY, Fu XT, Hou YJ, Li Y, Yang MF, Fu XY, Sun BL. Astaxanthin Attenuates Homocysteine-Induced Cardiotoxicity in Vitro and in Vivo by Inhibiting Mitochondrial Dysfunction and Oxidative Damage. Front Physiol 2017; 8:1041. [PMID: 29311972 PMCID: PMC5733103 DOI: 10.3389/fphys.2017.01041] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2017] [Accepted: 11/29/2017] [Indexed: 12/13/2022] Open
Abstract
Homocysteine (Hcy) as an independent risk factor contributes to the occurrence and development of human cardiovascular diseases (CVD). Induction of oxidative stress and apoptosis was commonly accepted as the major mechanism in Hcy-induced cardiotoxicity. Astaxanthin (ATX) as one of the most powerful antioxidants exhibits novel cardioprotective potential against Hcy-induced endothelial dysfunction. However, the protective effect and mechanism of ATX against Hcy-induced cardiotoxicity in cardiomyocytes have not been elucidated yet. Herein, H9c2 rat cardiomyocytes and Hcy-injured animal model were employed in the present study. The MTT, flow cytometry analysis (FCM), TUNEL-DAPI and western blotting results all demonstrated that ATX significantly alleviated Hcy-induced cytotoxicity in H9c2 cells through inhibition of mitochondria-mediated apoptosis. The JC-1 and Mito-tracker staining both revealed that ATX pre-treatment blocked Hcy-induced mitochondrial dysfunction by regulating Bcl-2 family expression. Moreover, DCFH-DA and Mito-SOX staining showed that ATX effectively attenuated Hcy-induced oxidative damage via scavenging intracellular reactive oxygen species (ROS). Importantly, the ELISA and immunohistochemical results indicated that Hcy-induced cardiotoxicity in vivo was also significantly inhibited by ATX through inhibition of oxidative damage and apoptosis, and improvement of the angiogenesis. Taken together, our results demonstrated that ATX suppressed Hcy-induced cardiotoxicity in vitro and in vivo by inhibiting mitochondrial dysfunction and oxidative damage. Our findings validated the strategy of using ATX may be a highly efficient way to combat Hcy-mediated human CVD.
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Affiliation(s)
- Cun-Dong Fan
- Key Lab of Cerebral Microcirculation in Universities of Shandong, Taishan Medical University, Taian, China
| | - Jing-Yi Sun
- Wonju Severance Christian Hospital, Yonsei University Wonju College of Medicine, Wonju, South Korea
| | - Xiao-Ting Fu
- Key Lab of Cerebral Microcirculation in Universities of Shandong, Taishan Medical University, Taian, China
| | - Ya-Jun Hou
- Key Lab of Cerebral Microcirculation in Universities of Shandong, Taishan Medical University, Taian, China
| | - Yuan Li
- Key Lab of Cerebral Microcirculation in Universities of Shandong, Taishan Medical University, Taian, China
| | - Ming-Feng Yang
- Key Lab of Cerebral Microcirculation in Universities of Shandong, Taishan Medical University, Taian, China
| | - Xiao-Yan Fu
- Key Lab of Cerebral Microcirculation in Universities of Shandong, Taishan Medical University, Taian, China
| | - Bao-Liang Sun
- Key Lab of Cerebral Microcirculation in Universities of Shandong, Taishan Medical University, Taian, China.,Department of Neurology, Affiliated Hospital of Taishan Medical University, Taian, China
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