1
|
Campagna R, Vignini A. NAD + Homeostasis and NAD +-Consuming Enzymes: Implications for Vascular Health. Antioxidants (Basel) 2023; 12:376. [PMID: 36829935 PMCID: PMC9952603 DOI: 10.3390/antiox12020376] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/31/2023] [Accepted: 02/02/2023] [Indexed: 02/08/2023] Open
Abstract
Nicotinamide adenine dinucleotide (NAD+) is a ubiquitous metabolite that takes part in many key redox reactions. NAD+ biosynthesis and NAD+-consuming enzymes have been attracting markedly increasing interest since they have been demonstrated to be involved in several crucial biological pathways, impacting genes transcription, cellular signaling, and cell cycle regulation. As a consequence, many pathological conditions are associated with an impairment of intracellular NAD+ levels, directly or indirectly, which include cardiovascular diseases, obesity, neurodegenerative diseases, cancer, and aging. In this review, we describe the general pathways involved in the NAD+ biosynthesis starting from the different precursors, analyzing the actual state-of-art of the administration of NAD+ precursors or blocking NAD+-dependent enzymes as strategies to increase the intracellular NAD+ levels or to counteract the decline in NAD+ levels associated with ageing. Subsequently, we focus on the disease-related and age-related alterations of NAD+ homeostasis and NAD+-dependent enzymes in endothelium and the consequent vascular dysfunction, which significantly contributes to a wide group of pathological disorders.
Collapse
Affiliation(s)
- Roberto Campagna
- Department of Clinical Sciences, Polytechnic University of Marche, 60100 Ancona, Italy
| | - Arianna Vignini
- Department of Clinical Sciences, Polytechnic University of Marche, 60100 Ancona, Italy
- Research Center of Health Education and Health Promotion, Università Politecnica delle Marche, 60121 Ancona, Italy
| |
Collapse
|
2
|
Shan M, Liu H, Hao Y, Song K, Meng T, Feng C, Wang Y, Huang Y. Metabolomic Profiling Reveals That 5-Hydroxylysine and 1-Methylnicotinamide Are Metabolic Indicators of Keloid Severity. Front Genet 2022; 12:804248. [PMID: 35222522 PMCID: PMC8864098 DOI: 10.3389/fgene.2021.804248] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2021] [Accepted: 12/28/2021] [Indexed: 12/21/2022] Open
Abstract
Background: Keloid is a skin fibroproliferative disease with unknown pathogenesis. Metabolomics provides a new perspective for revealing biomarkers related to metabolites and their metabolic mechanisms. Method: Metabolomics and transcriptomics were used for data analysis. Quality control of the data was performed to standardize the data. Principal component analysis (PCA), PLS-DA, OPLS-DA, univariate analysis, CIBERSORT, neural network model, and machine learning correlation analysis were used to calculate differential metabolites. The molecular mechanisms of characteristic metabolites and differentially expressed genes were identified through enrichment analysis and topological analysis. Result: Compared with normal tissue, lipids have a tendency to decrease in keloids, while peptides have a tendency to increase in keloids. Significantly different metabolites between the two groups were identified by random forest analysis, including 1-methylnicotinamide, 4-hydroxyproline, 5-hydroxylysine, and l-prolinamide. The metabolic pathways which play important roles in the pathogenesis of keloids included arachidonic acid metabolism and d-arginine and d-ornithine metabolism. Metabolomic profiling reveals that 5-hydroxylysine and 1-methylnicotinamide are metabolic indicators of keloid severity. The high-risk early warning index for 5-hydroxylysine is 4 × 108-6.3×108 (p = 0.0008), and the high-risk predictive index for 1-methylnicotinamide is 0.95 × 107-1.6×107 (p = 0.0022). Conclusion: This study was the first to reveal the metabolome profile and transcriptome of keloids. Differential metabolites and metabolic pathways were calculated by machine learning. Metabolomic profiling reveals that 5-hydroxylysine and 1-methylnicotinamide may be metabolic indicators of keloid severity.
Collapse
Affiliation(s)
- Mengjie Shan
- Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China.,Graduate School, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Hao Liu
- Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China.,Graduate School, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yan Hao
- Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China.,Graduate School, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kexin Song
- Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China
| | - Tian Meng
- Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China
| | - Cheng Feng
- Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China
| | - Youbin Wang
- Department of Plastic Surgery, Peking Union Medical College Hospital, Beijing, China
| | - Yongsheng Huang
- Graduate School, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| |
Collapse
|
3
|
Duan L, Fan R, Li T, Yang Z, Hu E, Yu Z, Tian J, Luo W, Zhang C. Metabolomics Analysis of the Prefrontal Cortex in a Rat Chronic Unpredictable Mild Stress Model of Depression. Front Psychiatry 2022; 13:815211. [PMID: 35370823 PMCID: PMC8965009 DOI: 10.3389/fpsyt.2022.815211] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Accepted: 01/26/2022] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Depressive disorder is the leading cause of disability and suicidality worldwide. Metabolites are considered indicators and regulators of depression. However, the pathophysiology of the prefrontal cortex (PFC) in depression remains unclear. METHODS A chronic unpredictable mild stress (CUMS) model and a maturation rodent model of depression was used to investigate metabolic changes in the PFC. Eighteen male Sprague-Dawley rats were randomly divided into CUMS and control groups. The sucrose preference test (SPT) and forced swimming test (FST) were employed to evaluate and record depression-associated behaviors and changes in body weight (BW). High-performance liquid chromatography-tandem mass spectrometry was applied to test metabolites in rat PFC. Furthermore, principal component analysis and orthogonal partial least-squares discriminant analysis were employed to identify differentially abundant metabolites. Metabolic pathways were analyzed using MetaboAnalyst. Finally, a metabolite-protein interaction network was established to illustrate the function of differential metabolites. RESULTS SPT and FST results confirmed successful establishment of the CUMS-induced depression-like behavior model in rats. Five metabolites, including 1-methylnicotinamide, 3-methylhistidine, acetylcholine, glycerophospho-N-palmitoyl ethanolamine, α-D-mannose 1-phosphate, were identified as potential biomarkers of depression. Four pathways changed in the CUMS group. Metabolite-protein interaction analysis revealed that 10 pathways play roles in the metabolism of depression. CONCLUSION Five potential biomarkers were identified in the PFC and metabolite-protein interactions associated with metabolic pathophysiological processes were explored using the CUMS model. The results of this study will assist physicians and scientists in discovering potential diagnostic markers and novel therapeutic targets for depression.
Collapse
Affiliation(s)
- Lihua Duan
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Rong Fan
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Teng Li
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Zhaoyu Yang
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - En Hu
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Zhe Yu
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Jing Tian
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Weikang Luo
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| | - Chunhu Zhang
- Department of Integrated Traditional Chinese and Western Medicine, Institute of Integrative Medicine, Xiangya Hospital, Central South University, Changsha, China.,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China
| |
Collapse
|
4
|
Luzak B, Boncler M, Kosmalski M, Mnich E, Stanczyk L, Przygodzki T, Watala C. Fibrinogen Glycation and Presence of Glucose Impair Fibrin Polymerization-An In Vitro Study of Isolated Fibrinogen and Plasma from Patients with Diabetes Mellitus. Biomolecules 2020; 10:biom10060877. [PMID: 32517350 PMCID: PMC7356284 DOI: 10.3390/biom10060877] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2020] [Revised: 05/30/2020] [Accepted: 06/03/2020] [Indexed: 01/09/2023] Open
Abstract
Background: Fibrin formation and structure may be affected by a plethora of factors, including both genetic and posttranslational modifications, such as glycation, nitration or acetylation. Methods: The present study examines the effect of fibrinogen glycation on fibrin polymerization, measured in fibrinogen concentration-standardized plasma of subjects with type 2 diabetes mellitus (T2DM) and in a solution of human fibrinogen exposed to 30 mM glucose for four days. Results: The fibrin polymerization velocity (Vmax) observed in the T2DM plasma (median 0.0056; IQR 0.0049‒0.0061 AU/s) was significantly lower than in non-diabetic plasma (median 0.0063; IQR 0.0058‒0.0071 AU/s) (p < 0.05). Furthermore, significantly lower Vmax was observed for glucose-treated fibrinogen (Vmax 0.046; IQR 0.022‒0.085 AU/s) compared to control protein incubated with a pure vehicle (Vmax 0.053; IQR 0.034‒0.097 AU/s) (p < 0.05). The same tendency was observed in the fibrinogen samples supplemented with 6 mM glucose just before measurements. It is assumed that glucose may affect the ability of fibrinogen to form a stable clot in T2DM subjects, and that this impairment is likely to influence the outcomes of some diagnostic assays. As the example, the impaired clotting ability of glycated fibrinogen may considerably influence the results of the standard Clauss method, routinely used to determine fibrinogen concentration in plasma. The stoichiometric analysis demonstrated that spontaneous glycation at both the sites with high and low glycation potential clearly dominated in T2DM individuals in all fibrinogen chains.
Collapse
Affiliation(s)
- Boguslawa Luzak
- Department of Hemostasis and Hemostatic Disorders, Chair of Biomedical Sciences, Medical University of Lodz, Mazowiecka 6/8, 92-216 Lodz, Poland; (M.B.); (E.M.); (L.S.); (T.P.); (C.W.)
- Correspondence: ; Tel.: +48-42-2725740
| | - Magdalena Boncler
- Department of Hemostasis and Hemostatic Disorders, Chair of Biomedical Sciences, Medical University of Lodz, Mazowiecka 6/8, 92-216 Lodz, Poland; (M.B.); (E.M.); (L.S.); (T.P.); (C.W.)
| | - Marcin Kosmalski
- Department of Clinical Pharmacology, 1st Chair of Internal Medicine, Medical University of Lodz, Kopcinskiego 22, 90-153 Lodz, Poland;
| | - Ewelina Mnich
- Department of Hemostasis and Hemostatic Disorders, Chair of Biomedical Sciences, Medical University of Lodz, Mazowiecka 6/8, 92-216 Lodz, Poland; (M.B.); (E.M.); (L.S.); (T.P.); (C.W.)
| | - Lidia Stanczyk
- Department of Hemostasis and Hemostatic Disorders, Chair of Biomedical Sciences, Medical University of Lodz, Mazowiecka 6/8, 92-216 Lodz, Poland; (M.B.); (E.M.); (L.S.); (T.P.); (C.W.)
| | - Tomasz Przygodzki
- Department of Hemostasis and Hemostatic Disorders, Chair of Biomedical Sciences, Medical University of Lodz, Mazowiecka 6/8, 92-216 Lodz, Poland; (M.B.); (E.M.); (L.S.); (T.P.); (C.W.)
| | - Cezary Watala
- Department of Hemostasis and Hemostatic Disorders, Chair of Biomedical Sciences, Medical University of Lodz, Mazowiecka 6/8, 92-216 Lodz, Poland; (M.B.); (E.M.); (L.S.); (T.P.); (C.W.)
| |
Collapse
|
5
|
Mu RH, Tan YZ, Fu LL, Nazmul Islam M, Hu M, Hong H, Tang SS. 1-Methylnicotinamide attenuates lipopolysaccharide-induced cognitive deficits via targeting neuroinflammation and neuronal apoptosis. Int Immunopharmacol 2019; 77:105918. [DOI: 10.1016/j.intimp.2019.105918] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 09/13/2019] [Accepted: 09/13/2019] [Indexed: 01/09/2023]
|
6
|
Kilanowicz A, Markowicz-Piasecka M, Klimczak M, Stragierowicz J, Sikora J. Hexachloronaphthalene as a hemostasis disturbing factor in female Wistar rats - A pilot study. CHEMOSPHERE 2019; 228:577-585. [PMID: 31075638 DOI: 10.1016/j.chemosphere.2019.04.147] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 04/17/2019] [Accepted: 04/19/2019] [Indexed: 06/09/2023]
Abstract
Although Persistent Organic Pollutants (POPs) are some of the most dangerous environmental toxicants, data on their impact on hemostasis are virtually limited. 1,2,3,5,6,7-hexachloronaphthalene (PCN67) seems to be one of the most toxic congeners of polychlorinated naphthalenes (PCNs), which have recently been listed as POPs. The toxic effects of PCNs are similar to other chlorinated aromatics, e.g. polychlorinated dibenzo-p-dioxins (PCDDs), so an impact on hemostasis could not be excluded. Therefore, this study examines, for the first time, if short-term (two and four weeks) exposure of a mixture of hexachloronaphthalene congeners with a PCN67 as a predominant component to female Wistar rats may have an impact on selected hemostasis parameters, such as overall potential and kinetic parameters of clot formation and fibrinolysis; hematology and basic coagulology parameters. It also examines the influence of PCN67 on the stability of erythrocyte membranes. Obtained results indicate that PCN67 may be an important disturbing factor regarding both coagulation and fibrinolysis processes, as well as platelet count. Exposure to PCN67 significantly affected clot formation and lysis processes and diminished fibrinogen concentration after both administration periods. After two weeks of administration, an increased activated partial thromboplastin time (APTT) was noted; after four weeks - decreased platelet count with concomitant increased in mean platelet volume. Moreover, PCN67 may exert adverse effects on the red blood cells membrane stability, which were manifested by a statistically significant increase of red blood cells lysis.
Collapse
Affiliation(s)
- Anna Kilanowicz
- Department of Toxicology, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
| | - Magdalena Markowicz-Piasecka
- Laboratory of Bioanalysis, Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
| | - Michał Klimczak
- Department of Toxicology, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
| | - Joanna Stragierowicz
- Department of Toxicology, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
| | - Joanna Sikora
- Laboratory of Bioanalysis, Department of Pharmaceutical Chemistry, Drug Analysis and Radiopharmacy, Medical University of Lodz, Muszynskiego 1, 90-151, Lodz, Poland.
| |
Collapse
|
7
|
Protective Effects of 1-Methylnicotinamide on Aβ1–42-Induced Cognitive Deficits, Neuroinflammation and Apoptosis in Mice. J Neuroimmune Pharmacol 2019; 14:401-412. [DOI: 10.1007/s11481-018-09830-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2018] [Accepted: 12/07/2018] [Indexed: 02/03/2023]
|
8
|
Nejabati HR, Mihanfar A, Pezeshkian M, Fattahi A, Latifi Z, Safaie N, Valiloo M, Jodati AR, Nouri M. N1-methylnicotinamide (MNAM) as a guardian of cardiovascular system. J Cell Physiol 2018; 233:6386-6394. [PMID: 29741779 DOI: 10.1002/jcp.26636] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2017] [Accepted: 03/30/2018] [Indexed: 12/19/2022]
Abstract
Atherosclerosis is identified as the formation of atherosclerotic plaques, which could initiate the formation of a blood clot in which its growth to coronary artery can lead to a heart attack. N-methyltransferase (NNMT) is an enzyme that converts the NAM (nicotinamide) to its methylated form, N1-methylnicotinamide (MNAM). Higher levels of MNAM have been reported in cases with coronary artery disease (CAD). Further, MNAM increases endothelial prostacyclin (PGI2) and nitric oxide (NO) and thereby causes vasorelaxation. The vasoprotective, anti-inflammatory and anti-thrombotic roles of MNAM have been well documented; however, the exact underlying mechanisms remain to be clarified. Due to potential role of MNAM in the formation of lipid droplets (LDs), it might exert its function in coordination with lipids, and their targets. In this study, we summarized the roles of MNAM in cardiovascular system and highlighted its possible mode of actions.
Collapse
Affiliation(s)
- Hamid Reza Nejabati
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Aynaz Mihanfar
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Masoud Pezeshkian
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Amir Fattahi
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Zeinab Latifi
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran.,Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Naser Safaie
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Valiloo
- Department of Biochemistry and Clinical Laboratories, Faculty of Medicine, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Ahmad Reza Jodati
- Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Mohammad Nouri
- Stem Cell and Regenerative Medicine Institute, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
9
|
Ostertag LM, Philo M, Colquhoun IJ, Tapp HS, Saha S, Duthie GG, Kemsley EK, de Roos B, Kroon PA, Le Gall G. Acute Consumption of Flavan-3-ol-Enriched Dark Chocolate Affects Human Endogenous Metabolism. J Proteome Res 2017; 16:2516-2526. [DOI: 10.1021/acs.jproteome.7b00089] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Luisa M. Ostertag
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
- Rowett
Institute of Nutrition and Health, University of Aberdeen, Aberdeen AB24 3FX, United Kingdom
| | - Mark Philo
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Ian J. Colquhoun
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Henri S. Tapp
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Shikha Saha
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Garry G. Duthie
- Rowett
Institute of Nutrition and Health, University of Aberdeen, Aberdeen AB24 3FX, United Kingdom
| | - E. Kate Kemsley
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Baukje de Roos
- Rowett
Institute of Nutrition and Health, University of Aberdeen, Aberdeen AB24 3FX, United Kingdom
| | - Paul A. Kroon
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| | - Gwénaëlle Le Gall
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UA, United Kingdom
| |
Collapse
|
10
|
Jiang N, Wang M, Song J, Liu Y, Chen H, Mu D, Xia M. N-methylnicotinamide protects against endothelial dysfunction and attenuates atherogenesis in apolipoprotein E-deficient mice. Mol Nutr Food Res 2016; 60:1625-36. [PMID: 26887666 DOI: 10.1002/mnfr.201501019] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/02/2016] [Accepted: 02/04/2016] [Indexed: 11/10/2022]
Abstract
SCOPE Epidemiological studies have demonstrated that N-methylnicotinamide (MNA) may exert antithrombotic and anti-inflammatory effects on the endothelium. However, the exact role of MNA in endothelial function remains uncertain. METHODS AND RESULTS Apolipoprotein E-deficient (apoE(-/-) ) mice fed with a high-fat, high-cholesterol diet (HCD) and human umbilical vein endothelial cells (HUVECs) were used to explore the role of MNA in endothelial function and its underlying mechanism. The endothelium-dependent vasorelaxation to acetylcholine in the aortas of low and high dose MNA-fed apoE(-/-) mice was improved by 24 and 36% (p < 0.05), respectively, compared with high-fat, HCD-fed control. MNA significantly increased nitric oxide/cyclic guanosinemonophosphate levels and decreased asymmetric dimethylarginine (ADMA) concentrations by induction of dimethylarginine dimethylaminohydrolase (DDAH)2 both in aorta and endothelial cells. Neither the activity nor the protein expression of DDAH1 was influenced upon MNA treatment. Then, DDAH2 depletion by RNA interference in HUVECs abolished the protective effect of MNA on endothelial function. Mechanically, this could be attributed to a direct modulation of the methylation level of DDAH2 gene promoter region by MNA. CONCLUSIONS The present study reveals a novel mechanism through which MNA improves endothelial dysfunction and attenuates atherogenesis via the modulation of ADMA-DDAH axis.
Collapse
Affiliation(s)
- Nan Jiang
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, P. R. China
| | - Min Wang
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, P. R. China
| | - Jiayi Song
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, P. R. China
| | - Yan Liu
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, P. R. China
| | - Hongen Chen
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, P. R. China
| | - Di Mu
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, P. R. China
| | - Min Xia
- Department of Nutrition, School of Public Health, Sun Yat-sen University (Northern Campus), Guangzhou, Guangdong Province, P. R. China
| |
Collapse
|
11
|
Tsuji A, Nakata C, Sano M, Fukuwatari T, Shibata K. L-tryptophan metabolism in pregnant mice fed a high L-tryptophan diet and the effect on maternal, placental, and fetal growth. Int J Tryptophan Res 2013; 6:21-33. [PMID: 24009424 PMCID: PMC3748091 DOI: 10.4137/ijtr.s12715] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Excess L-tryptophan (L-Trp) in the diet decreases fetal body weight. However, the relationship between L-Trp concentration and its effects on maternal, placental, and fetal growth are not well-understood. We investigated the effects of excess L-Trp intake on maternal, placental, and fetal growth. Female mice were fed a 20% casein diet (control diet) or control diet plus 2% or 5% L-Trp during gestation. Pup weights did not differ between the control (L-Trp intake: 0.04 g/kg body weight (BW)/day) and 2% L-Trp groups (L-Trp intake: 3.3 g/kg BW/day), but were significantly lower in the 5% L-Trp group (L-Trp intake: 7.0 g/kg BW/day) than in the control and 2% L-Trp groups. These results show that less than 3.3 g/kg BW/day L-Trp intake in pregnant mice during gestation does not affect fetal growth or L-Trp homeostasis in the placenta or fetus.
Collapse
Affiliation(s)
- Ai Tsuji
- Department of Nutrition, School of Human Cultures, the University of Shiga Prefecture, Hikone, Shiga 522-8533, Japan
| | | | | | | | | |
Collapse
|
12
|
Przygodzki T, Grobelski B, Kazmierczak P, Watala C. N-Methyl-2-pyridone-5-carboxamide is 1-methylnicotinamide metabolite of low cyclooxygenase-dependent vasodilating activity. J Physiol Biochem 2012; 68:329-34. [DOI: 10.1007/s13105-012-0144-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2011] [Accepted: 01/02/2012] [Indexed: 12/30/2022]
|