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Su Q, Tang Q, Ma C, Wang K. Advances in the study of the relationship between gut microbiota and erectile dysfunction. Sex Med Rev 2024; 12:664-669. [PMID: 38984896 DOI: 10.1093/sxmrev/qeae049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2024] [Revised: 06/15/2024] [Accepted: 06/27/2024] [Indexed: 07/11/2024]
Abstract
INTRODUCTION In recent years, in-depth research has revealed that gut microbiota has an inseparable relationship with erectile dysfunction (ED) in men. OBJECTIVES (1) To review the correlation between gut microbiota and ED from the perspective of its impact on men's mental health, metabolism, immunity, and endocrine regulation and (2) to provide reference to further explore the pathogenesis of ED and the improvement of clinical treatment plans. METHODS PubMed was used for the literature search to identify publications related to ED and gut microbiota. RESULTS Gut microbiota may induce depression and anxiety through the microbiota-gut-brain axis, leading to the occurrence of psychological ED. It may also cause vascular endothelial dysfunction and androgen metabolism disorder by interfering with lipid metabolism, immunity, and endocrine regulation, leading to the occurrence of organic ED. CONCLUSION Gut microbiota and its metabolites play an important role in the occurrence and development of ED. As a new influencing factor of ED, gut microbiota disorder is expected to become a target for treatment.
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Affiliation(s)
- Quanxin Su
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian 116000, China
| | - Qizhen Tang
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian 116000, China
| | - Chuanyu Ma
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian 116000, China
| | - Kenan Wang
- Department of Urology, The First Affiliated Hospital of Dalian Medical University, Dalian 116000, China
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Brandao CFC, Krempf M, Giolo de Carvalho F, Aguesse A, Junqueira-Franco MVM, Batitucci G, de Freitas EC, Noronha NY, Rodrigues GDS, Junqueira GP, Borba DA, Billon-Crossouard S, Croyal M, Marchini JS. Sphingolipid and Trimethylamine-N-Oxide (TMAO) Levels in Women with Obesity after Combined Physical Training. Metabolites 2024; 14:398. [PMID: 39195494 DOI: 10.3390/metabo14080398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2024] [Revised: 07/03/2024] [Accepted: 07/07/2024] [Indexed: 08/29/2024] Open
Abstract
Obesity causes metabolic changes, such as the development of cardiovascular diseases. Moreover, physical exercise promotes protection against these diseases. Thus, the objective of the present study was to evaluate whether combined physical training can improve the metabolic system of women with obesity, reducing plasma concentrations of trimethylamine N-oxide (TMAO) and sphingolipids, regardless of weight loss. Fourteen obese women (BMI 30-40 kg/m2), aged 20-40 years, sedentary, were submitted to 8 weeks of combined physical training (strength and aerobic exercises). The training was performed three times/week, 55 min/session, at 75-90% maximum heart rate. All participants were evaluated pre- and post-exercise intervention, and their body composition, plasma TMAO, creatinine, lipid profile, and sphingolipid concentrations were recorded. Maximum oxygen consumption (VO2max), Speed lactate threshold 1 (SpeedLT1), and Speed lactate threshold 2 (SpeedLT2) evaluated physical performance. Results: After combined exercise, it did not change body composition, but TMAO, total cholesterol, and sphingolipid concentrations significantly decreased (p < 0.05). There was an increase in physical performance by improving VO2max, SpeedLT1, and SpeedLT2 (p < 0.05). The combined physical exercise could induce cardiovascular risk protection by decreasing TMAO in obese women, parallel to physical performance improvement, independent of weight loss.
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Affiliation(s)
- Camila Fernanda Cunha Brandao
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14000-000, São Paulo, Brazil
- Department of Physical Education, State University of Minas Gerais, Divinópolis 35500-000, Minas Gerais, Brazil
| | - Michel Krempf
- NUN, INRA, The Research Unit of the Thorax Institute, CHU Nantes, UMR 1280, PhAN, IMAD, CRNH-O, F-44000 Nantes, France
| | - Flávia Giolo de Carvalho
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14000-000, São Paulo, Brazil
| | - Audrey Aguesse
- NUN, INRA, The Research Unit of the Thorax Institute, CHU Nantes, UMR 1280, PhAN, IMAD, CRNH-O, F-44000 Nantes, France
| | | | - Gabriela Batitucci
- Department of Food and Nutrition, School of Pharmaceutical Sciences of Araraquara, State University of São Paulo, Rod. Araraquara-Jau Km 1, Araraquara 14800-000, São Paulo, Brazil
| | - Ellen Cristini de Freitas
- School of Physical Education and Sport of Ribeirão Preto, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14000-000, São Paulo, Brazil
- Department of Food and Nutrition, School of Pharmaceutical Sciences of Araraquara, State University of São Paulo, Rod. Araraquara-Jau Km 1, Araraquara 14800-000, São Paulo, Brazil
| | - Natalia Yumi Noronha
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14000-000, São Paulo, Brazil
| | - Guilherme da Silva Rodrigues
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14000-000, São Paulo, Brazil
| | - Gizela Pedroso Junqueira
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14000-000, São Paulo, Brazil
| | - Diego Alcantara Borba
- Department of Physical Education, State University of Minas Gerais, Divinópolis 35500-000, Minas Gerais, Brazil
| | - Stéphanie Billon-Crossouard
- NUN, INRA, The Research Unit of the Thorax Institute, CHU Nantes, UMR 1280, PhAN, IMAD, CRNH-O, F-44000 Nantes, France
| | - Mikael Croyal
- NUN, INRA, The Research Unit of the Thorax Institute, CHU Nantes, UMR 1280, PhAN, IMAD, CRNH-O, F-44000 Nantes, France
| | - Julio Sergio Marchini
- Ribeirão Preto Medical School, University of São Paulo, Av. Bandeirantes 3900, Ribeirão Preto 14000-000, São Paulo, Brazil
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Andreu‐Sánchez S, Ahmad S, Kurilshikov A, Beekman M, Ghanbari M, van Faassen M, van den Munckhof ICL, Steur M, Harms A, Hankemeier T, Ikram MA, Kavousi M, Voortman T, Kraaij R, Netea MG, Rutten JHW, Riksen NP, Zhernakova A, Kuipers F, Slagboom PE, van Duijn CM, Fu J, Vojinovic D. Unraveling interindividual variation of trimethylamine N-oxide and its precursors at the population level. IMETA 2024; 3:e183. [PMID: 38898991 PMCID: PMC11183189 DOI: 10.1002/imt2.183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/28/2024] [Accepted: 02/28/2024] [Indexed: 06/21/2024]
Abstract
Trimethylamine N-oxide (TMAO) is a circulating microbiome-derived metabolite implicated in the development of atherosclerosis and cardiovascular disease (CVD). We investigated whether plasma levels of TMAO, its precursors (betaine, carnitine, deoxycarnitine, choline), and TMAO-to-precursor ratios are associated with clinical outcomes, including CVD and mortality. This was followed by an in-depth analysis of their genetic, gut microbial, and dietary determinants. The analyses were conducted in five Dutch prospective cohort studies including 7834 individuals. To further investigate association results, Mendelian Randomization (MR) was also explored. We found only plasma choline levels (hazard ratio [HR] 1.17, [95% CI 1.07; 1.28]) and not TMAO to be associated with CVD risk. Our association analyses uncovered 10 genome-wide significant loci, including novel genomic regions for betaine (6p21.1, 6q25.3), choline (2q34, 5q31.1), and deoxycarnitine (10q21.2, 11p14.2) comprising several metabolic gene associations, for example, CPS1 or PEMT. Furthermore, our analyses uncovered 68 gut microbiota associations, mainly related to TMAO-to-precursors ratios and the Ruminococcaceae family, and 16 associations of food groups and metabolites including fish-TMAO, meat-carnitine, and plant-based food-betaine associations. No significant association was identified by the MR approach. Our analyses provide novel insights into the TMAO pathway, its determinants, and pathophysiological impact on the general population.
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Affiliation(s)
- Sergio Andreu‐Sánchez
- Department of Genetics, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Department of Pediatrics, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Shahzad Ahmad
- Department of EpidemiologyErasmus University Medical CenterRotterdamThe Netherlands
- Metabolomics & Analytics Centre, Leiden Academic Center for Drug ResearchLeiden UniversityLeidenThe Netherlands
| | - Alexander Kurilshikov
- Department of Genetics, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Marian Beekman
- Molecular Epidemiology, Department of Biomedical Data SciencesLeiden University Medical CenterLeidenThe Netherlands
| | - Mohsen Ghanbari
- Department of EpidemiologyErasmus University Medical CenterRotterdamThe Netherlands
| | - Martijn van Faassen
- Department of Laboratory Medicine, University Medical Center GroningenUniversity of GroningenGroningenThe Netherland
| | - Inge C. L. van den Munckhof
- Department of Internal Medicine and Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenThe Netherlands
| | - Marinka Steur
- Department of EpidemiologyErasmus University Medical CenterRotterdamThe Netherlands
| | - Amy Harms
- Metabolomics & Analytics Centre, Leiden Academic Center for Drug ResearchLeiden UniversityLeidenThe Netherlands
| | - Thomas Hankemeier
- Metabolomics & Analytics Centre, Leiden Academic Center for Drug ResearchLeiden UniversityLeidenThe Netherlands
| | - M. Arfan Ikram
- Department of EpidemiologyErasmus University Medical CenterRotterdamThe Netherlands
| | - Maryam Kavousi
- Department of EpidemiologyErasmus University Medical CenterRotterdamThe Netherlands
| | - Trudy Voortman
- Department of EpidemiologyErasmus University Medical CenterRotterdamThe Netherlands
| | - Robert Kraaij
- Department of Internal MedicineErasmus University Medical CenterRotterdamThe Netherlands
| | - Mihai G. Netea
- Department of Internal Medicine and Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenThe Netherlands
| | - Joost H. W. Rutten
- Department of Internal Medicine and Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenThe Netherlands
| | - Niels P. Riksen
- Department of Internal Medicine and Radboud Institute for Molecular Life SciencesRadboud University Medical CenterNijmegenThe Netherlands
| | - Alexandra Zhernakova
- Department of Genetics, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Folkert Kuipers
- Department of Pediatrics, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Department of Laboratory Medicine, University Medical Center GroningenUniversity of GroningenGroningenThe Netherland
- European Institute for the Biology of Ageing, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - P. Eline Slagboom
- Molecular Epidemiology, Department of Biomedical Data SciencesLeiden University Medical CenterLeidenThe Netherlands
| | | | - Jingyuan Fu
- Department of Genetics, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
- Department of Pediatrics, University Medical Center GroningenUniversity of GroningenGroningenThe Netherlands
| | - Dina Vojinovic
- Department of EpidemiologyErasmus University Medical CenterRotterdamThe Netherlands
- Molecular Epidemiology, Department of Biomedical Data SciencesLeiden University Medical CenterLeidenThe Netherlands
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Xie L, Pan L, Liu B, Cheng H, Mao X. Research progress on the association between trimethylamine/trimethylamine-N-oxide and neurological disorders. Postgrad Med J 2024; 100:283-288. [PMID: 38158712 DOI: 10.1093/postmj/qgad133] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 11/26/2023] [Accepted: 12/02/2023] [Indexed: 01/03/2024]
Abstract
Trimethylamine-N-oxide (TMAO) is a common intestinal metabolite. The Choline in the nutrient forms TMA under the action of the gut microbiota, which passes through the liver and eventually forms TMAO. Initial studies of TMAO focused on cardiovascular disease, but as research progressed, TAMO's effects were found to be multisystem and closely related to the development of neurological diseases. Intestinal tract is the organ with the largest concentration of bacteria in human body, and the composition and metabolism of gut microbiota affect human health. As a two-way communication axis connecting the central nervous system and the gastrointestinal tract, the brain-gut axis provides the structural basis for TMAO to play its role. This article will review the correlation between TMA/TMAO and neurological diseases in order to find new directions and new targets for the treatment of neurological diseases.
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Affiliation(s)
- Lizheng Xie
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - Li Pan
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - Baiyun Liu
- Department of Neurosurgery, Beijing TianTan Hospital, Capital Medical University, Beijing, 100070, China
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, China
| | - Hongwei Cheng
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
| | - Xiang Mao
- Department of Neurosurgery, The First Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230022, China
- Beijing Key Laboratory of Central Nervous System Injury, Beijing Neurosurgical Institute, Beijing, 100070, China
- China National Clinical Research Center for Neurological Diseases, Beijing, 100070, China
- Department of Neurosurgery, The First People's Hospital of Tianshui, Tian Shui, Gansu, 741000, China
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Huang YJ, Ferrari MW, Lin S, Wang ZH. Recent advances on the Role of Gut Microbiota in the Development of Heart Failure by Mediating Immune Metabolism. Curr Probl Cardiol 2024; 49:102128. [PMID: 37802162 DOI: 10.1016/j.cpcardiol.2023.102128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 09/30/2023] [Indexed: 10/08/2023]
Abstract
The association between gut microbiota and the development of heart failure has become a research hotspot in recent years and the impact of gut microbiota on heart failure has attracted growing interest. From 2006 to 2021, the global research on gut microbiota and heart failure has gradually expanded, indicating a developed and promising research field. There were 40 countries, 196 institutions, and 257 authors involved in the publication on the relationship between gut microbiota and heart failure, respectively. In patients with heart failure, inadequate visceral perfusion leads to ischemia and intestinal edema, which compromise the gut barrier. This subsequently results in the translocation of bacteria and bacterial metabolites into the circulatory system and causes local and systemic inflammatory responses. The gastrointestinal tract contains the largest number of immune cells in the human body and gut microbiota play important roles in the immune system by promoting immune tolerance to symbiotic bacteria. Studies have shown that probiotics can act on gut microorganisms, thereby increasing choline metabolism and reducing plasma TMA and TMAO concentrations, thus inhibiting the development of heart failure. Meanwhile, probiotics induce the production of inflammatory suppressors to maintain gut immune stability and inhibit the progression of heart failure by reducing ventricular remodeling. Here, we review the current understanding of gut microbiota-driven immune dysfunction in experimental and clinical heart failure, as well as the therapeutic interventions that could be used to address these issues.
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Affiliation(s)
- Yu-Jing Huang
- Department of Cardiology, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, PR China
| | - Markus W Ferrari
- Clinic of Internal Medicine 1, HSK, Clinic of the City of Wiesbaden and the HELIOS Group, Wiesbaden, Germany.
| | - Shu Lin
- Centre of Neurological and Metabolic Research, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, PR China; Group of Neuroendocrinology, Garvan Institute of Medical Research, Sydney, Australia.
| | - Zhen-Hua Wang
- Department of Cardiology, Second Affiliated Hospital of Fujian Medical University, Quanzhou, Fujian Province, PR China.
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Mirzababaei A, Mahmoodi M, Abaj F, Barkhidarian B, Dehghani A, Khalili P, Roumi Z, Mirzaei K. The association of dietary nitrates/nitrites intake and the gut microbial metabolite trimethylamine N-oxide and kynurenine in adults: a population-based study. Front Nutr 2024; 11:1346074. [PMID: 38450240 PMCID: PMC10915207 DOI: 10.3389/fnut.2024.1346074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/31/2024] [Indexed: 03/08/2024] Open
Abstract
Background Dietary nitrate and nitrite may affect the gut microbiota and its metabolites, such as trimethylamine N-oxide (TMAO) and kynurenine (KYN). However, this association and the exact mechanism are still unclear. Therefore, this study aimed to assess the association between dietary consumption of nitrite and nitrate on TMAO and KYN levels in adults. Methods This cross-sectional study was employed on a subsample baseline phase of the Tehran University of Medical Sciences (TUMS) Employee's Cohort Study (TEC). A total of 250 adults aged 18 years or older were included in the current analysis. Data on the dietary intakes were collected using a validated dish-based food frequency questionnaire (FFQ), and dietary intakes of nitrite and nitrate were estimated using the FFQ with 144 items. Serum profiles and TMAO and KYN were measured using a standard protocol. Results The findings of this study demonstrate a significant association between the intake of animal sources of nitrate and nitrite and the likelihood of having elevated levels of TMAO and KYN. Specifically, after adjustment, individuals with the highest intake adherence to nitrates from animal sources exhibited increased odds of having the highest level of TMAO (≥51.02 pg/ml) (OR = 1.51, 95% CI = 0.59-3.88, P = 0.03) and KYN (≥417.41 pg/ml) (OR = 1.75, 95% CI = 0.73-4.17, P = 0.02). Additionally, subjects with the highest animal intake from nitrite sources have 1.73 and 1.45 times higher odds of having the highest levels of TMAO and KYN. These results emphasize the potential implications of animal-derived nitrate and nitrite consumption on the levels of TMAO and KYN. Conclusion The present evidence indicates that a high level of nitrate and nitrite intake from animal sources can increase the odds of high levels of TMAO and KYN. Further studies suggest that we should better evaluate and understand this association.
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Affiliation(s)
- Atieh Mirzababaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Maryam Mahmoodi
- Department of Cellular and Molecular Nutrition, School of Nutritional Science and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Faezeh Abaj
- Department of Nutrition, Dietetics and Food, School of Clinical Sciences at Monash Health, Monash University, Clayton, VIC, Australia
| | - Bahareh Barkhidarian
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Azadeh Dehghani
- Department of Community Nutrition, Faculty of Nutrition and Food Science, Nutrition Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
| | - Pardis Khalili
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Zahra Roumi
- Department of Nutrition, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Khadijeh Mirzaei
- Department of Community Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
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Florea CM, Rosu R, Moldovan R, Vlase L, Toma V, Decea N, Baldea I, Filip GA. The impact of chronic Trimethylamine N-oxide administration on liver oxidative stress, inflammation, and fibrosis. Food Chem Toxicol 2024; 184:114429. [PMID: 38176578 DOI: 10.1016/j.fct.2023.114429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/20/2023] [Accepted: 12/28/2023] [Indexed: 01/06/2024]
Abstract
TMAO, a gut microbiota derived byproduct, has been associated with various cardiometabolic diseases by promoting oxidative stress and inflammation. The liver is the main organ for TMAO production and chronic exposure to high doses of TMAO could alter its function. In this study, we evaluated the effect of chronic exposure of high TMAO doses on liver oxidative stress, inflammation, and fibrosis. TMAO was administered daily via gastric gavage to laboratory rats for 3 months. Blood was drawn for the quantification of TMAO, and liver tissues were harvested for the assessment of oxidative stress (MDA, GSH, GSSG, GPx, CAT, and 8-oxo-dG) and inflammation by quantification of IL-1α, TNF-α, IL-10, TGF-β, NOS and COX-2 expression. The evaluation of fibrosis was made by Western blot analysis of α-SMA and Collagen-3 protein expression. Histological investigation and immunohistochemical staining of iNOS were performed in order to assess the liver damage. After 3 months of TMAO exposure, TMAO serum levels enhanced in parallel with increases in MDA and GSSG levels in liver tissue and lower values of GSH and GSH/GSSG ratio as well as a decrease in GPx and CAT activities. Inflammation was also highlighted, with enhanced iNOS, COX-2, and IL-10 expression, without structural changes and without induction of liver fibrosis.
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Affiliation(s)
- Cristian Marius Florea
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Radu Rosu
- Fifth Department of Internal Medicine, Cardiology Clinic, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Remus Moldovan
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Laurian Vlase
- Department of Pharmaceutical Technology and Biopharmaceutics, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Vlad Toma
- Department of Molecular Biology and Biotechnologies, Faculty of Biology and Geology, Babeș-Bolyai University, Cluj-Napoca, Romania; Department of Experimental Biology and Biochemistry, Institute of Biological Research, branch of NIRDBS, Cluj-Napoca, Romania; Center for Systems Biology, Biodiversity and Bioresources "3B", Babeș-Bolyai University, Cluj-Napoca, Romania.
| | - Nicoleta Decea
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Ioana Baldea
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
| | - Gabriela Adriana Filip
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Cluj-Napoca, Romania
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Janeiro MH, Solas M, Orbe J, Rodríguez JA, Sanchez de Muniain L, Escalada P, Yip PK, Ramirez MJ. Trimethylamine N-Oxide as a Mediator Linking Peripheral to Central Inflammation: An In Vitro Study. Int J Mol Sci 2023; 24:17557. [PMID: 38139384 PMCID: PMC10743393 DOI: 10.3390/ijms242417557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/11/2023] [Accepted: 12/12/2023] [Indexed: 12/24/2023] Open
Abstract
In this study, the plausible role of trimethylamine N-oxide (TMAO), a microbiota metabolite, was investigated as a link between peripheral inflammation and the inflammation of the central nervous system using different cell lines. TMAO treatment favored the differentiation of adipocytes from preadipocytes (3T3-L1 cell line). In macrophages (RAW 264.7 cell line), which infiltrate adipose tissue in obesity, TMAO increased the expression of pro-inflammatory cytokines. The treatment with 200 μM of TMAO seemed to disrupt the blood-brain barrier as it induced a significant decrease in the expression of occludin in hCMECs. TMAO also increased the expression of pro-inflammatory cytokines in primary neuronal cultures, induced a pro-inflammatory state in primary microglial cultures, and promoted phagocytosis. Data obtained from this project suggest that microbial dysbiosis and increased TMAO secretion could be a key link between peripheral and central inflammation. Thus, TMAO-decreasing compounds may be a promising therapeutic strategy for neurodegenerative diseases.
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Affiliation(s)
- Manuel H. Janeiro
- Department of Pharmacology and Toxicology, University of Navarra, 31008 Pamplona, Spain; (M.H.J.); (M.S.); (L.S.d.M.); (P.E.)
| | - Maite Solas
- Department of Pharmacology and Toxicology, University of Navarra, 31008 Pamplona, Spain; (M.H.J.); (M.S.); (L.S.d.M.); (P.E.)
- IdISNA, Navarra Institute for Health Research, 31008 Pamplona, Spain
| | - Josune Orbe
- IdISNA, Navarra Institute for Health Research, 31008 Pamplona, Spain
- Laboratory of Atherothrombosis, CIMA, 31008 Pamplona, Spain;
- Redes de Investigación Cooperativa Orientadas a Resultados en Salud (RICORS)-Ictus, Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Jose A. Rodríguez
- Laboratory of Atherothrombosis, CIMA, 31008 Pamplona, Spain;
- CIBER Cardiovascular (CIBERCV), Instituto de Salud Carlos III, 28029 Madrid, Spain
| | - Leyre Sanchez de Muniain
- Department of Pharmacology and Toxicology, University of Navarra, 31008 Pamplona, Spain; (M.H.J.); (M.S.); (L.S.d.M.); (P.E.)
| | - Paula Escalada
- Department of Pharmacology and Toxicology, University of Navarra, 31008 Pamplona, Spain; (M.H.J.); (M.S.); (L.S.d.M.); (P.E.)
| | - Ping K. Yip
- Centre for Neuroscience, Surgery & Trauma, Blizard Institute, Queen Mary University of London, London EC1M 6BQ, UK;
| | - Maria J. Ramirez
- Department of Pharmacology and Toxicology, University of Navarra, 31008 Pamplona, Spain; (M.H.J.); (M.S.); (L.S.d.M.); (P.E.)
- IdISNA, Navarra Institute for Health Research, 31008 Pamplona, Spain
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Wang Y, Shen X, Wang P. Constipation is associated with depression of any severity, but not with suicidal ideation: insights from a large cross-sectional study. Int J Colorectal Dis 2023; 38:231. [PMID: 37713119 DOI: 10.1007/s00384-023-04520-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 09/08/2023] [Indexed: 09/16/2023]
Abstract
OBJECTIVE The association between constipation and depression or suicidal ideation (SI) has not been adequately studied. This study aims to examine whether constipation is associated with depression or SI in US adults. METHOD 4,562 adults aged 20 and older were selected from the National Health and Nutrition Examination Survey 2009-2010 for the sample. The Bowel Health Questionnaire provided constipation information. Clinical depression and depression severity were assessed by the validated Patient Health Questionnaide-9 (PHQ-9), and item 9 of the PHQ-9 assessed SI. Adjusted odds ratios (ORs) were calculated using multivariate logistic regression models. Stability of the results was ensured by a subgroup analysis. RESULT After adjusting for covariates such as demographics, risk behaviors, associated comorbidities, dietary intake, and related medications, the PHQ-9 score and clinical depression were both significantly associated with constipation, with ORs and 95%CIs of 1.13 (1.10-1.16) and 3.76 (2.65-5.34). Depression of all severities was also significantly associated with constipation. The ORs and 95%CIs of constipation with mild depression, moderate depression, and moderately severe to severe depression were 2.21 (1.54-3.16), 3.69 (2.34-5.81) and 6.84 (4.19-11.15), respectively. Subgroup analyses showed no statistically significant interactions (P > 0.05), and the association was stronger in men than in women (OR: 7.81, 95%CI: 3.67-16.61 vs OR: 3.46, 95%CI: 2.31-5.19). The association between constipation and SI was not significant (OR: 1.36, 95%CI: 0.78-2.37). CONCLUSION In conclusion, constipation was significantly associated with depression of any severity, but not with SI, suggesting that enough attention should be paid to the emotional and psychological status of patients with constipation, especially male patients.
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Affiliation(s)
- Yan Wang
- Department of Oncology, China Academy of Chinese Medical Sciences Guang' Anmen Hospital, Beijing, 100053, China
| | - Xia Shen
- Department of Nursing, Wuxi Medical College, Jiangnan University, 1800 Li Hu Avenue, Wuxi, 214062, China
| | - Pengfei Wang
- Department of Anorectal Surgery, China Academy of Chinese Medical Sciences Xiyuan Hospital, Beijing, 100091, China.
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10
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Fechtner S, Allen BE, Chriswell ME, Jubair WK, Robertson CE, Kofonow JN, Frank DN, Holers VM, Kuhn KA. 3,3-dimethyl-1-butanol and its metabolite 3,3-dimethylbutyrate ameliorate collagen-induced arthritis independent of choline trimethylamine lyase activity. RESEARCH SQUARE 2023:rs.3.rs-3297018. [PMID: 37720032 PMCID: PMC10503834 DOI: 10.21203/rs.3.rs-3297018/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/19/2023]
Abstract
Previous studies have identified significant alterations in intestinal carnitine metabolism in mice with collagen-induced arthritis (CIA), potentially linking bacterial dysbiosis with autoimmunity. Bacterial trimethylamine (TMA) lyases metabolize dietary carnitine to TMA, which is oxidized in the liver to trimethylamine-N-oxide (TMAO). TMAO is associated with inflammatory diseases, such as atherosclerosis, whose immunologic processes mirror that of rheumatoid arthritis (RA). Therefore, we investigated the possibility of ameliorating CIA by inhibiting TMA lyase activity using 3,3-dimethyl-1-butanol (DMB) or fluoromethylcholine (FMC). During CIA, mice were treated with 1% vol/vol DMB, 100mg/kg FMC, or vehicle. DMB-treated mice demonstrated significant (>50%) reduction in arthritis severity compared to FMC and vehicle-treated mice. However, in contrast to FMC, DMB treatment did not reduce cecal TMA nor circulating TMAO concentrations. Using gas chromatography, we confirmed the effect of DMB is independent of TMA lyase inhibition. Further, we identified a novel host-derived metabolite of DMB, 3,3-dimethyl-1-butyric acid (DMBut), which also significantly reduced disease and proinflammatory cytokines in CIA mice. Altogether, our study suggests that DMB the immunomodulatory activity of DMB and/or its metabolites are protective in CIA. Elucidating its target and mechanism of action may provide new directions for RA therapeutic development.
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11
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Rowland SN, Heaney LM, Da Boit M, Bailey SJ. Trimethylamine N-Oxide Concentration and Blood Pressure in Young Healthy Men and Women: A Replicated Crossover Study. Metabolites 2023; 13:876. [PMID: 37512583 PMCID: PMC10383726 DOI: 10.3390/metabo13070876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2023] [Revised: 07/19/2023] [Accepted: 07/20/2023] [Indexed: 07/30/2023] Open
Abstract
Trimethylamine N-oxide (TMAO), a gut-derived metabolite and marker of gut dysbiosis, has been linked to hypertension. Blood pressure is proposed to be elevated in hormonal contraceptive users and males compared to age-matched eumenorrheic females, but the extent to which TMAO differs between these populations has yet to be investigated. Peripheral and central blood pressure were measured, with the latter determined via applanation tonometry, and plasma TMAO concentration was assessed using liquid chromatography-tandem mass spectrometry. The following variables were assessed on two occasions in each of the following conditions: the early follicular phase (EFP) and mid-luteal phase (MLP) in eumenorrheic women (n = 13), and the pill-free interval (INACTIVE) and pill consumption days (ACTIVE) in women using oral contraceptive pills (n = 12), and in men (n = 22). Briefly, 17-β-estradiol and progesterone concentrations were quantified via ELISA in all females. There were no differences in TMAO concentration between EFP (2.9 ± 1.7 μmol/L) and MLP (3.2 ± 1.1 μmol/L), between INACTIVE (3.3 ± 2.9 μmol/L) and ACTIVE (2.3 ± 1.1 μmol/L) days, or between men (3.0 ± 1.8 μmol/L), eumenorrheic women (3.0 ± 1.3 μmol/L) and contraceptive users (2.8 ± 1.4 μmol/L). Blood pressure was consistent across the menstrual cycle and pill days, but brachial systolic blood pressure was higher in males than females. There were no differences in brachial diastolic blood pressure or central blood pressure between the sexes. Repeated measures of TMAO, blood pressure, 17-β-estradiol and progesterone were consistent in all populations. These findings suggest that the link between TMAO and blood pressure is limited in healthy young adults.
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Affiliation(s)
- Samantha N Rowland
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, UK
| | - Liam M Heaney
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, UK
| | - Mariasole Da Boit
- Health and Life Sciences, School of Allied Health Sciences, De Montfort University, Leicester LE1 9BH, UK
| | - Stephen J Bailey
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough LE11 3TU, UK
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12
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Liu C, Zhou Y, Gao H, Zhang Z, Zhou Y, Xu Z, Zhang C, Xu Z, Zheng H, Ma YQ. Circulating LPS from gut microbiota leverages stenosis-induced deep vein thrombosis in mice. Thromb J 2023; 21:71. [PMID: 37386453 PMCID: PMC10308784 DOI: 10.1186/s12959-023-00514-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/15/2023] [Indexed: 07/01/2023] Open
Abstract
OBJECTIVE AND DESIGN An accumulating body of evidence has shown that gut microbiota is involved in regulating inflammation; however, it remains undetermined if and how gut microbiota plays an important role in modulating deep venous thrombosis (DVT), which is an inflammation-involved thrombotic event. SUBJECTS Mice under different treatments were used in this study. METHODS AND TREATMENT We induced stenosis DVT in mice by partially ligating the inferior vena cava. Mice were treated with antibiotics, prebiotics, probiotics, or inflammatory reagents to modulate inflammatory states, and their effects on the levels of circulating LPS and DVT were examined. RESULTS Antibiotic-treated mice or germ-free mice exhibited compromised DVT. Treatment of mice with either prebiotics or probiotics effectively suppressed DVT, which was accompanied with the downregulation of circulating LPS. Restoration of circulating LPS in these mice with a low dose of LPS was able to restore DVT. LPS-induced DVT was blocked by a TLR4 antagonist. By performing proteomic analysis, we identified TSP1 as one of the downstream effectors of circulating LPS in DVT. CONCLUSION These results suggest that gut microbiota may play a nonnegligible role in modulating DVT by leveraging the levels of LPS in circulation, thus shedding light on the development of gut microbiota-based strategies for preventing and treating DVT.
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Affiliation(s)
- Cheng Liu
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Ying Zhou
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Huihui Gao
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Zeping Zhang
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Yu Zhou
- Collaborative Research Program for Cell Adhesion Molecules, Shanghai University School of Life Sciences, Shanghai, China
| | - Zifeng Xu
- Department of General Surgery, School of Medicine, Ruijin Hospital, Shanghai Jiaotong University, Shanghai, China
| | - Chenhong Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiaotong University, Shanghai, China
| | - Zhen Xu
- Versiti Blood Research Institute, 8727 Watertown Plank Rd, Wisconsin, Milwaukee, WI, 53226, USA
| | - Huajun Zheng
- NHC Key Lab of Reproduction Regulation, Shanghai Institute for Biomedical and Pharmaceutical Technologies, Fudan University, Shanghai, 200237, China.
| | - Yan-Qing Ma
- Versiti Blood Research Institute, 8727 Watertown Plank Rd, Wisconsin, Milwaukee, WI, 53226, USA.
- Department of Biochemistry, Medical College of Milwaukee, Milwaukee, WI, USA.
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13
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Wang H, Wang Y, Shi Z, Zhao L, Jian W, Li K, Xu R, Wu Y, Xu F, Wang Y, Peng W. Association between Dietary Patterns and Metabolic Syndrome and Modification Effect of Altitude: A Cohort Study of Tibetan Adults in China. Nutrients 2023; 15:2226. [PMID: 37432367 DOI: 10.3390/nu15092226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 05/01/2023] [Accepted: 05/05/2023] [Indexed: 07/12/2023] Open
Abstract
Little is known about the longitudinal association between dietary patterns (DPs) and metabolic disorders in people living at high altitude areas, such as Tibetans. We constructed the first open cohort, with 1832 Tibetans, and collected data in 2018 and in 2022. The metabolic syndrome (MetS) prevalence was 30.1% (32.3% in men and 28.3% in women). Three different DPs were identified: modern DP (pulses, poultry, offal, and processed meat), urban DP (vegetables, refined grain, beef/mutton, and eggs), and pastoral DP (Tibetan cheese, tsamba, butter/milk tea, and desserts). Participants within the third tertile of the urban DP had a 3.42-fold (95% CI 1.65-7.10) higher risk of MetS than those with the first tertile. Modern DP was positively associated with elevated blood pressure (BP) and elevated triglycerides (TAG), while it was inversely associated with low HDL-C. The urban DP was associated with a higher risk of low HDL-C, but a lower risk of impaired fasting blood glucose (FBG). The pastoral DP was a risk factor for impaired FBG, but protective for central obesity and elevated BP. Associations of modern DP with elevated BP, and pastoral DP with low HDL-C, were modified by altitude. In conclusion, among Tibetan adults, DPs were associated with MetS and its components, and the associations were modified by altitude among Tibetans.
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Affiliation(s)
- Haijing Wang
- Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810008, China
| | - Yanxiang Wang
- Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810008, China
| | - Zumin Shi
- Human Nutrition Department, College of Health Sciences, QU Health, Qatar University, Doha 2713, Qatar
| | - Lei Zhao
- Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810008, China
| | - Wenxiu Jian
- Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810008, China
| | - Ke Li
- Global Health Institute, School of Public Health, Xi'an Jiaotong University, Xi'an 710061, China
| | - Ruihua Xu
- Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810008, China
| | - Yan Wu
- Global Health Institute, School of Public Health, Xi'an Jiaotong University, Xi'an 710061, China
| | - Fei Xu
- Department of Epidemiology, School of Public Health, Nanjing Medical University, Nanjing 211166, China
- Non-Communicable Disease Prevention and Control, Nanjing Municipal Center for Disease Control and Prevention, Nanjing 211166, China
| | - Youfa Wang
- Global Health Institute, School of Public Health, Xi'an Jiaotong University, Xi'an 710061, China
| | - Wen Peng
- Nutrition and Health Promotion Center, Department of Public Health, Medical College, Qinghai University, Xining 810008, China
- Qinghai Provincial Key Laboratory of Prevention and Control of Glucolipid Metabolic Diseases with Traditional Chinese Medicine, Xining 810008, China
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14
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Ongun MC, Orgul G, Celik C, Bariskaner H. Contractile effect of trimethylamine and trimethylamine-n-oxide on isolated human umbilical arteries. J Obstet Gynaecol Res 2023. [PMID: 37045561 DOI: 10.1111/jog.15656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 04/03/2023] [Indexed: 04/14/2023]
Abstract
BACKGROUND The aim of this study is to investigate the effect of trimethylamine (TMA) and trimethylamine-n-oxide (TMAO) on the contractility of human umbilical artery and the possible mechanisms involved. METHODS Vasoactive responses to TMA and TMAO on human umbilical artery rings were measured in isolated organ baths. Cumulative dose-response curves for TMA and TMAO were obtained before and after incubation with atropine, yohimbine, prazosin, indomethacin, verapamil, and Ca+2 -free Krebs-Henselite solution. RESULTS Administration of cumulative TMA and TMAO resulted in dose-dependent contraction at concentrations ranging from 10 to 100 mM on human umbilical artery rings. TMA-induced contractions were more potent than TMAO-induced contractions (TMA: -logEC50 = 1.00 ± 0.02, TMAO: -logEC50 = 0.57 ± 0.02). Contraction responses to TMA were significantly lower in the presence of verapamil and in the absence of external Ca+2 (p < 0.001, p < 0.05, respectively). CONCLUSION Our results showed that TMA and TMAO caused vasoconstriction in isolated human umbilical artery rings. Our findings also indicated that TMA but not TMAO-induced vasoconstriction was partially dependent on extracellular Ca2+ and calcium influx through L-type Ca2+ channels. Our results suggest that TMA and TMAO may have the potential to contribute to cardiovascular diseases through their direct effect on vascular contractility in human arteries.
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Affiliation(s)
- Mert C Ongun
- Department of Medical Pharmacology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Gokcen Orgul
- Department of Obstetrics and Gynecology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Cetin Celik
- Department of Obstetrics and Gynecology, Faculty of Medicine, Selcuk University, Konya, Turkey
| | - Hulagu Bariskaner
- Department of Medical Pharmacology, Faculty of Medicine, Selcuk University, Konya, Turkey
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15
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Chen Y, Yang C, Dai Q, Tan J, Dou C, Luo F. Gold-nanosphere mitigates osteoporosis through regulating TMAO metabolism in a gut microbiota-dependent manner. J Nanobiotechnology 2023; 21:125. [PMID: 37041523 PMCID: PMC10088181 DOI: 10.1186/s12951-023-01872-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2023] [Accepted: 03/24/2023] [Indexed: 04/13/2023] Open
Abstract
Osteoporosis (OP) is a metabolic bone disease characterized by decreased bone mass and increased bone fragility. The imbalance of bone homeostasis modulated by osteoclasts and osteoblasts is the most crucial pathological change in osteoporosis. As a novel treatment strategy, nanomedicine has been applied in drug delivery and targeted therapy due to its high efficiency, precision, and fewer side effects. Gold nanospheres (GNS), as a common kind of gold nanoparticles (GNPs), possess significant antimicrobial and anti-inflammatory activity, which have been applied for the treatment of eye diseases and rheumatoid arthritis. However, the effect of GNS on osteoporosis remains elusive. In this study, we found that GNS significantly prevented ovariectomy (OVX)-induced osteoporosis in a gut microbiota-dependent manner. 16S rDNA gene sequencing demonstrated GNS markedly altered the gut microbial diversity and flora composition. In addition, GNS reduced the abundance of TMAO-related metabolites in OVX mice. Low TMAO levels might alleviate the bone loss phenomenon by reducing the inflammation response. Therefore, we investigated the alteration of cytokine profiles in OVX mice. GNS inhibited the release of pro-osteoclastogenic or proinflammatory cytokines including tumor necrosis factor α (TNF-α), interleukin (IL)-6, and granulocyte colony-stimulating factor (G-CSF) in the serum. In conclusion, GNS suppressed estrogen deficiency-induced bone loss by regulating the destroyed homeostasis of gut microbiota so as to reduce its relevant TMAO metabolism and restrain the release of proinflammatory cytokines. These results demonstrated the protective effects of GNS on osteoporosis as a gut microbiota modulator and offered novel insights into the regulation of the "gut-bone" axis.
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Affiliation(s)
- Yueqi Chen
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China.
| | - Chuan Yang
- Department of Biomedical Materials Science, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Qijie Dai
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Jiulin Tan
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China
| | - Ce Dou
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China.
| | - Fei Luo
- Department of Orthopedics, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, People's Republic of China.
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Mutengo KH, Masenga SK, Mweemba A, Mutale W, Kirabo A. Gut microbiota dependant trimethylamine N-oxide and hypertension. Front Physiol 2023; 14:1075641. [PMID: 37089429 PMCID: PMC10118022 DOI: 10.3389/fphys.2023.1075641] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 03/31/2023] [Indexed: 04/25/2023] Open
Abstract
The human gut microbiota environment is constantly changing and some specific changes influence the host's metabolic, immune, and neuroendocrine functions. Emerging evidence of the gut microbiota's role in the development of cardiovascular disease (CVD) including hypertension is remarkable. There is evidence showing that alterations in the gut microbiota and especially the gut-dependant metabolite trimethylamine N-oxide is associated with hypertension. However, there is a scarcity of literature addressing the role of trimethylamine N-oxide in hypertension pathogenesis. In this review, we discuss the impact of the gut microbiota and gut microbiota dependant trimethylamine N-oxide in the pathogenesis of hypertension. We present evidence from both human and animal studies and further discuss new insights relating to potential therapies for managing hypertension by altering the gut microbiota.
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Affiliation(s)
- Katongo H. Mutengo
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone, Zambia
- Schools of Public Health and Medicine, University of Zambia, Lusaka, Zambia
| | - Sepiso K. Masenga
- HAND Research Group, School of Medicine and Health Sciences, Mulungushi University, Livingstone, Zambia
- Schools of Public Health and Medicine, University of Zambia, Lusaka, Zambia
| | - Aggrey Mweemba
- Department of Medicine, Levy Mwanawasa Medical University, Lusaka, Zambia
| | - Wilbroad Mutale
- School of Public Health, University of Zambia, Lusaka, Zambia
| | - Annet Kirabo
- Department of Medicine, Vanderbilt University Medical Center, Nashville, TN, United States
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17
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Zhang L, Yu F, Xia J. Trimethylamine N-oxide: role in cell senescence and age-related diseases. Eur J Nutr 2023; 62:525-541. [PMID: 36219234 DOI: 10.1007/s00394-022-03011-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Accepted: 09/21/2022] [Indexed: 01/10/2023]
Abstract
INTRODUCTION Hayflick and Moorhead first demonstrated cell senescence as the irreversible growth arrest of cells after prolonged cultivation. Telomere shortening and oxidative stress are the fundamental mechanisms that drive cell senescence. Increasing studies have shown that TMAO is closely associated with cellular aging and age-related diseases. An emerging body of evidence from animal models, especially mice, has identified that TMAO contributes to senescence from multiple pathways and appears to accelerate many neurodegenerative disorders such as Alzheimer's disease and Parkinson's disease. However, the specific mechanism of how TMAO speeds aging is still not completely clear. MATERIAL AND METHODS In this review, we summarize some key findings in TMAO, cell senescence, and age-related diseases. We focused particular attention on the potential mechanisms for clinical transformation to find ways to interfere with the aging process. CONCLUSION TMAO can accelerate cell senescence by causing mitochondrial damage, superoxide formation, and promoting the generation of pro-inflammatory factors.
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Affiliation(s)
- Lin Zhang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China.,Department of Neurology, Xuanwu Hospital, Capital Medical University, Beijing, 100053, China
| | - Fang Yu
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China
| | - Jian Xia
- Department of Neurology, Xiangya Hospital, Central South University, Changsha, 410008, Hunan, People's Republic of China. .,Clinical Research Center for Cerebrovascular Disease of Hunan Province, Central South University, Changsha, Hunan, China. .,National Clinical Research Center for Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, Hunan, China.
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18
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Ma L, Fu G, Liu R, Zhou F, Dong S, Zhou Y, Lou J, Wang X. Phenylacetyl glutamine: a novel biomarker for stroke recurrence warning. BMC Neurol 2023; 23:74. [PMID: 36797695 PMCID: PMC9933389 DOI: 10.1186/s12883-023-03118-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 02/13/2023] [Indexed: 02/18/2023] Open
Abstract
BACKGROUND Stroke is the second leading cause of disease-related death and the third leading cause of disability worldwide. However, how to accurately warn of stroke onset remains extremely challenging. Recently, phenylacetyl glutamine (PAGln) has been implicated in the onset of stroke, but evidences from cohort studies of onset are lacking, especially in patients with first-onset or recurrent. It is necessary to deeply demonstrate the effectiveness of PAGln level on warning stroke onset. METHODS One hundred fifteen first onset stroke patients, 33 recurrent stroke patients, and 135 non-stroke controls were included in the analysis. Risk factors associated with stroke attacking were evaluated, and plasma PAGln levels were detected via HPLC-MS based method. LASSO regression, Pearson correlation analysis, and univariate analysis were carried out to demonstrate the associations between PAGln levels and risk factors of stroke. Random forest machine learning algorithm was used to build classification models to achieve the distinction of first-onset stroke patients, recurrent stroke patients, and non-stroke controls, and further demonstrate the contribution of PAGln levels in the distinction of stroke onset. RESULTS The median level of PAGln in the first-onset stroke group, recurrent stroke group, and non-stroke group was 933 ng/mL, 1014 ng/mL, and 556 ng/mL, respectively. No statistical correlation was found between PAGln level and subject's living habits, eating preferences, and concomitant diseases (hypertension, hyperlipidemia, and diabetes). Stroke severity indicators, mainly age and NIHSS score, were found associate with the PAGln levels. Machine learning classification models confirmed that PAGln levels, as the main contributing variable, could be used to distinguish recurrent stroke patients (but not first-onset stroke patients) from non-stroke controls. CONCLUSION PAGln may be an effective indicator to monitor the recurrence in stroke patients.
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Affiliation(s)
- Li Ma
- Department of Neurology, Shaoxing Second Hospital, The Second Affiliated Hospital of Shaoxing University of Arts and Sciences, Shaoxing, 312000, China.
| | - Guoping Fu
- grid.477955.dDepartment of Neurology, Shaoxing Second Hospital, The Second Affiliated Hospital of Shaoxing University of Arts and Sciences, Shaoxing, 312000 China
| | - Rongrong Liu
- grid.477955.dDepartment of Neurology, Shaoxing Second Hospital, The Second Affiliated Hospital of Shaoxing University of Arts and Sciences, Shaoxing, 312000 China
| | - Feng Zhou
- grid.477955.dDepartment of Neurology, Shaoxing Second Hospital, The Second Affiliated Hospital of Shaoxing University of Arts and Sciences, Shaoxing, 312000 China
| | - Shiye Dong
- Shanghai Zhangjiang Institute of Medical Innovation, Shanghai, 201204 China ,grid.477955.dMolecular Medicine Center, Shaoxing Second Hospital, The Second Affiliated Hospital of Shaoxing University of Arts and Sciences, Shaoxing, 312000 China
| | - Yang Zhou
- grid.477955.dDepartment of Neurology, Shaoxing Second Hospital, The Second Affiliated Hospital of Shaoxing University of Arts and Sciences, Shaoxing, 312000 China
| | - Jingwei Lou
- Shanghai Zhangjiang Institute of Medical Innovation, Shanghai, 201204, China.
| | - Xinjun Wang
- Shanghai Zhangjiang Institute of Medical Innovation, Shanghai, 201204, China. .,Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai, 200092, China. .,Shanghai Institution of Gut Microbiota Research and Engineering Development, Tenth People's Hospital of Tongji University, Tongji University School of Medicine, Shanghai, 200072, China.
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19
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Zhou L, Jiang Z, Zhang Z, Xing J, Wang D, Tang D. Progress of gut microbiome and its metabolomics in early screening of colorectal cancer. Clin Transl Oncol 2023:10.1007/s12094-023-03097-6. [PMID: 36790675 DOI: 10.1007/s12094-023-03097-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Accepted: 01/18/2023] [Indexed: 02/16/2023]
Abstract
Gut microbes are widely considered to be closely associated with colorectal cancer (CRC) development. The microbiota is regarded as a potential identifier of CRC, as several studies have found great significant changes in CRC patients' microbiota and metabolic groups. Changes in microbiota, like Fusobacterium nucleatum and Bacteroides fragilis, also alter the metabolic activity of the host, promoting CRC development. In contrast, the metabolome is an intuitive discriminative biomarker as a small molecular bridge to distinguish CRC from healthy individuals due to the direct action of microbes on the host. More diagnostic microbial markers have been found, and the potential discriminatory power of microorganisms in CRC has been investigated through the combined use of biomic genomic metabolomics, bringing new ideas for screening fecal microbial markers. In this paper, we discuss the potential of microorganisms and their metabolites as biomarkers in CRC screening, hoping to provide thoughts and references for non-invasive screening of CRC.
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Affiliation(s)
- Lujia Zhou
- Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu Province, 225000, People's Republic of China
| | - Zhengting Jiang
- Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu Province, 225000, People's Republic of China
| | - Zhilin Zhang
- Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu Province, 225000, People's Republic of China
| | - Juan Xing
- Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu Province, 225000, People's Republic of China
| | - Daorong Wang
- Department of General Surgery, Institute of General Surgery, Northern Jiangsu People's Hospital, Clinical Medical College, Yangzhou University, Yangzhou, 225000, People's Republic of China
| | - Dong Tang
- Department of General Surgery, Institute of General Surgery, Northern Jiangsu People's Hospital, Clinical Medical College, Yangzhou University, Yangzhou, 225000, People's Republic of China.
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Stec A, Sikora M, Maciejewska M, Paralusz-Stec K, Michalska M, Sikorska E, Rudnicka L. Bacterial Metabolites: A Link between Gut Microbiota and Dermatological Diseases. Int J Mol Sci 2023; 24:ijms24043494. [PMID: 36834904 PMCID: PMC9961773 DOI: 10.3390/ijms24043494] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2023] [Revised: 02/04/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
Dysbiosis has been identified in many dermatological conditions (e.g., psoriasis, atopic dermatitis, systemic lupus erythematosus). One of the ways by which the microbiota affect homeostasis is through microbiota-derived molecules (metabolites). There are three main groups of metabolites: short-chain fatty acids (SCFAs), tryptophan metabolites, and amine derivatives including trimethylamine N-oxide (TMAO). Each group has its own uptake and specific receptors through which these metabolites can exert their systemic function. This review provides up-to-date knowledge about the impact that these groups of gut microbiota metabolites may have in dermatological conditions. Special attention is paid to the effect of microbial metabolites on the immune system, including changes in the profile of the immune cells and cytokine disbalance, which are characteristic of several dermatological diseases, especially psoriasis and atopic dermatitis. Targeting the production of microbiota metabolites may serve as a novel therapeutic approach in several immune-mediated dermatological diseases.
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Affiliation(s)
- Albert Stec
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
| | - Mariusz Sikora
- National Institute of Geriatrics, Rheumatology and Rehabilitation, Spartańska 1, 02-637 Warsaw, Poland
- Correspondence:
| | - Magdalena Maciejewska
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
| | - Karolina Paralusz-Stec
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
| | - Milena Michalska
- Department of General, Vascular and Transplant Surgery, Medical University of Warsaw, Banacha 1a, 02-097 Warsaw, Poland
| | - Ewa Sikorska
- Department of Experimental and Clinical Physiology Center for Preclinical Research, Medical University of Warsaw, Banacha 1b, 02-097 Warsaw, Poland
| | - Lidia Rudnicka
- Department of Dermatology, Medical University of Warsaw, Koszykowa 82A, 02-008 Warsaw, Poland
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21
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Bhuiya J, Notsu Y, Kobayashi H, Shibly AZ, Sheikh AM, Okazaki R, Yamaguchi K, Nagai A, Nabika T, Abe T, Yamasaki M, Isomura M, Yano S. Neither Trimethylamine-N-Oxide nor Trimethyllysine Is Associated with Atherosclerosis: A Cross-Sectional Study in Older Japanese Adults. Nutrients 2023; 15:nu15030759. [PMID: 36771464 PMCID: PMC9921512 DOI: 10.3390/nu15030759] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 01/26/2023] [Accepted: 01/29/2023] [Indexed: 02/05/2023] Open
Abstract
Recent evidence suggests that trimethylamine-N-oxide (TMAO), a metabolite of L-carnitine and choline, is linked to atherosclerosis and cardiovascular diseases. As TMAO content is very high in fish, we raised the following question: why do Japanese people, who consume lots of fish, show a low risk of atherosclerosis? To address this question, we investigated the effects of TMAO and other L-carnitine-related metabolites on carotid intima-media thickness (IMT). Participants were recruited from a small island and a mountainous region. Plasma L-carnitine, γ-butyrobetaine (γBB), TMAO, trimethyllysine (TML), eicosapentaenoic acid (EPA), and docosahexaenoic acid (DHA) levels were measured using liquid or gas chromatography-mass spectrometry. Plasma L-carnitine concentration was higher in men than in women. TMAO and TML were significantly higher in the residents of the island than in the mountainous people. In multiple linear regression analyses in all participants, TML showed a significant inverse association with max-IMT and plaque score (PS), whereas TMAO did not show any associations. In women, L-carnitine was positively associated with max-IMT and PS. TMAO was correlated with both EPA and DHA levels, implying that fish is a major dietary source of TMAO in Japanese people. Our study found that plasma TMAO was not an apparent risk factor for atherosclerosis in elderly Japanese people, whereas a low level of TML might be a potential risk. L-carnitine may be a marker for atherosclerosis in women.
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Affiliation(s)
- Jubo Bhuiya
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Yoshitomo Notsu
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
- Metabolizumo Project, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Hironori Kobayashi
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
- Metabolizumo Project, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Abu Zaffar Shibly
- Department of Neurology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Abdullah Md. Sheikh
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Ryota Okazaki
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Kazuto Yamaguchi
- Department of Cardiology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Atsushi Nagai
- Department of Neurology, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Toru Nabika
- Metabolizumo Project, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
- Center for Community-Based Healthcare Research and Education (CoHRE), Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Takafumi Abe
- Center for Community-Based Healthcare Research and Education (CoHRE), Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Masayuki Yamasaki
- Center for Community-Based Healthcare Research and Education (CoHRE), Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Minoru Isomura
- Center for Community-Based Healthcare Research and Education (CoHRE), Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
| | - Shozo Yano
- Department of Laboratory Medicine, Faculty of Medicine, Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
- Center for Community-Based Healthcare Research and Education (CoHRE), Shimane University, 89-1 Enya-cho, Izumo City 693-8501, Japan
- Correspondence: ; Tel.: +81-0853-20-2312; Fax: +81-0853-20-2409
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22
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Liang H, Yu A, Wang Z, Zhang N, Wang Q, Gao H, Gao J, Wang X, Wang H. Atherosclerotic patients with diabetes mellitus may break through the threshold of healthy TMAO levels formed by long-term statins therapy. Heliyon 2023; 9:e13657. [PMID: 36879744 PMCID: PMC9984437 DOI: 10.1016/j.heliyon.2023.e13657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 01/28/2023] [Accepted: 02/07/2023] [Indexed: 02/13/2023] Open
Abstract
Background Cardiovascular disease (CVD) is the leading course of disease-related death in both developed and developing countries. Atherosclerosis is main pathology of CVD, and its severity is thought to be related to trimethylamine N-oxide (TMAO) level in plasma. Therefore, it is necessary to deeply understand the synergistic patterns between TMAO and other contribution variables to atherosclerosis, allowing for effective and timely monitoring or intervention. Methods A total of 359 participants were recruited in our study, including 190 atherosclerosis patients, 82 MI or stroke patients, 68 non-atherosclerosis controls and 19 healthy controls. Information on their risk associated with atherosclerosis and plasma TMAO concentration were collected. LASSO regression, multivariate analysis and univariate analysis were then performed to confirm the correlation between TMAO level and risk factors of atherosclerosis. Results Compared to patients and non-atherosclerosis controls, healthy participants had a normal BMI range (lower than 24), lower triglyceride concentration, and healthy lifestyle habits (no smoking and low salt diet). However, under backgrounds of statins treatment and balanced dietary preferences, TMAO levels were not significantly different among patients, non-atherosclerosis controls and healthy controls. Using LASSO regression model, four indicators was identified to have contribution to TMAO levels, including diabetes, atherosclerosis, low-density lipoprotein and total cholesterol. Subsequent univariate analysis further confirmed that the presence or absence of diabetes had a decisive effect on patients' plasma TMAO levels, even though they had been taking statin lipid-lowering drugs for a long time. Conclusion Diabetics have abnormally high plasma TMAO levels even under continuous statins treatment, which may contribute to the development and progression of atherosclerosis. Therefore, it is necessary to focus on monitoring TMAO levels in diabetic patients to reduce adverse cardiovascular events in diabetic patients.
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Affiliation(s)
- Hao Liang
- Department of Cardiology, Affiliated Hospital of Chengde Medical University, Chengde 067000, China
| | - Anqi Yu
- Shanghai Biotecan Pharmaceuticals Co., Ltd, Shanghai Zhangjiang Institute of Medical Innovation, Shanghai 201204, China
| | - Zheng Wang
- Shanghai Biotecan Pharmaceuticals Co., Ltd, Shanghai Zhangjiang Institute of Medical Innovation, Shanghai 201204, China
| | - Na Zhang
- Department of Cardiology, Affiliated Hospital of Chengde Medical University, Chengde 067000, China
| | - Qingsong Wang
- Department of Cardiology, Affiliated Hospital of Chengde Medical University, Chengde 067000, China
| | - Haichao Gao
- Department of Cardiology, Affiliated Hospital of Chengde Medical University, Chengde 067000, China
| | - Junhui Gao
- Shanghai Biotecan Pharmaceuticals Co., Ltd, Shanghai Zhangjiang Institute of Medical Innovation, Shanghai 201204, China
| | - Xinjun Wang
- Shanghai Biotecan Pharmaceuticals Co., Ltd, Shanghai Zhangjiang Institute of Medical Innovation, Shanghai 201204, China.,Translational Medical Center for Stem Cell Therapy and Institute for Regenerative Medicine, Shanghai East Hospital, Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China.,Shanghai Institution of Gut Microbiota Research and Engineering Development, Tenth People's Hospital of Tongji University, Tongji University School of Medicine, Shanghai 200072, China
| | - Hong Wang
- Department of Cardiology, Affiliated Hospital of Chengde Medical University, Chengde 067000, China
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23
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Tacconi E, Palma G, De Biase D, Luciano A, Barbieri M, de Nigris F, Bruzzese F. Microbiota Effect on Trimethylamine N-Oxide Production: From Cancer to Fitness-A Practical Preventing Recommendation and Therapies. Nutrients 2023; 15:563. [PMID: 36771270 PMCID: PMC9920414 DOI: 10.3390/nu15030563] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/11/2023] [Accepted: 01/13/2023] [Indexed: 01/24/2023] Open
Abstract
Trimethylamine N-oxide (TMAO) is a microbial metabolite derived from nutrients, such as choline, L-carnitine, ergothioneine and betaine. Recently, it has come under the spotlight for its close interactions with gut microbiota and implications for gastrointestinal cancers, cardiovascular disease, and systemic inflammation. The culprits in the origin of these pathologies may be food sources, in particular, high fat meat, offal, egg yolk, whole dairy products, and fatty fish, but intercalated between these food sources and the production of pro-inflammatory TMAO, the composition of gut microbiota plays an important role in modulating this process. The aim of this review is to explain how the gut microbiota interacts with the conversion of specific compounds into TMA and its oxidation to TMAO. We will first cover the correlation between TMAO and various pathologies such as dysbiosis, then focus on cardiovascular disease, with a particular emphasis on pro-atherogenic factors, and then on systemic inflammation and gastrointestinal cancers. Finally, we will discuss primary prevention and therapies that are or may become possible. Possible treatments include modulation of the gut microbiota species with diets, physical activity and supplements, and administration of drugs, such as metformin and aspirin.
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Affiliation(s)
- Edoardo Tacconi
- Department of Human Science and Quality of Life Promotion, San Raffaele Roma Open University, 00166 Rome, Italy
| | - Giuseppe Palma
- S.S.D. Sperimentazione Animale, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, 80131 Naples, Italy
| | - Davide De Biase
- Department of Pharmacy, University of Salerno, Via Giovanni Paolo II 132, 84084 Fisciano, Italy
| | - Antonio Luciano
- S.S.D. Sperimentazione Animale, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, 80131 Naples, Italy
| | - Massimiliano Barbieri
- S.S.D. Sperimentazione Animale, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, 80131 Naples, Italy
| | - Filomena de Nigris
- Department of Precision Medicine, School of Medicine, Università degli Studi della Campania “Luigi Vanvitelli”, Via De Crecchio 7, 80138 Naples, Italy
| | - Francesca Bruzzese
- S.S.D. Sperimentazione Animale, Istituto Nazionale Tumori-IRCCS-Fondazione G. Pascale, 80131 Naples, Italy
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24
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Gut Microbiota-Derived TMAO: A Causal Factor Promoting Atherosclerotic Cardiovascular Disease? Int J Mol Sci 2023; 24:ijms24031940. [PMID: 36768264 PMCID: PMC9916030 DOI: 10.3390/ijms24031940] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/13/2023] [Accepted: 01/16/2023] [Indexed: 01/20/2023] Open
Abstract
Trimethylamine-N-oxide (TMAO) is the main diet-induced metabolite produced by the gut microbiota, and it is mainly eliminated through renal excretion. TMAO has been correlated with an increased risk of atherosclerotic cardiovascular disease (ASCVD) and related complications, such as cardiovascular mortality or major adverse cardiovascular events (MACE). Meta-analyses have postulated that high circulating TMAO levels are associated with an increased risk of cardiovascular events and all-cause mortality, but the link between TMAO and CVD remains not fully consistent. The results of prospective studies vary depending on the target population and the outcome studied, and the adjustment for renal function tends to decrease or reverse the significant association between TMAO and the outcome studied, strongly suggesting that the association is substantially mediated by renal function. Importantly, one Mendelian randomization study did not find a significant association between genetically predicted higher TMAO levels and cardiometabolic disease, but another found a positive causal relationship between TMAO levels and systolic blood pressure, which-at least in part-could explain the link with renal function. The mechanisms by which TMAO can increase this risk are not clearly elucidated, but current evidence indicates that TMAO induces cholesterol metabolism alterations, inflammation, endothelial dysfunction, and platelet activation. Overall, there is no fully conclusive evidence that TMAO is a causal factor of ASCVD, and, especially, whether TMAO induces or just is a marker of hypertension and renal dysfunction requires further study.
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25
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He L, Yang W, Yang P, Zhang X, Zhang A. Higher serum trimethylamine-N-oxide levels are associated with increased abdominal aortic calcification in hemodialysis patients. Ren Fail 2022; 44:2019-2027. [DOI: 10.1080/0886022x.2022.2145971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Affiliation(s)
- Lian He
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Wenling Yang
- Department of Nephrology, Peking University Third Hospital, Beijing, China
| | - Ping Yang
- Department of Pharmacy, Peking University Third Hospital, Beijing, China
| | - Xianhua Zhang
- Department of Pharmacy, Peking University Third Hospital, Beijing, China
| | - Aihua Zhang
- Department of Nephrology, Xuanwu Hospital Capital Medical University, Beijing, China
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26
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Yong C, Huang G, Ge H, Zhu Y, Yang Y, Yu Y, Tian F, Gao K, Zhou E. Perilla frutescens
L. alleviates trimethylamine
N‐oxide
–induced apoptosis in the renal tubule by regulating
ASK1‐JNK
phosphorylation. Phytother Res 2022; 37:1274-1292. [PMID: 36420586 DOI: 10.1002/ptr.7684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 06/24/2022] [Accepted: 10/11/2022] [Indexed: 11/26/2022]
Abstract
Trimethylamine N-oxide (TMAO) is associated with overall mortality in patients with chronic kidney disease (CKD). Previous findings suggest that P. frutescens (L.) can alleviate renal injury, but its effects and mechanisms underlying alleviation of TMAO-induced kidney damage remain unclear. In this study, a TMAO injury model, in vivo and in vitro, was established to clarify the effects and mechanisms of P. frutescens in alleviating TMAO-induced kidney injury. The results show that TMAO (60 mM/L) can induce the activation of apoptosis signal-regulating kinase 1 (ASK1)-c-Jun N-terminal kinase (JNK), thus aggravating downstream cell apoptosis in vitro. The study also found that P. frutescens aqueous extract (PFAE) (5 mg/mL) can inhibit TMAO-induced apoptosis by downregulating ASK1-JNK phosphorylation. In the in vivo experiments, it was demonstrated that TMAO can increase the levels of blood urea nitrogen and cystatin C, aggravating renal tubular epithelial apoptosis. The results also show that PFAE can reduce TMAO-induced renal damage by inhibiting ASK1-JNK phosphorylation in vivo. Our findings confirmed that P. frutescens can alleviate TMAO-induced renal tubule apoptosis by regulating ASK1-JNK phosphorylation, indicating that P. frutescens may be an effective treatment for alleviating TMAO damage in CKD.
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Affiliation(s)
- Chen Yong
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- No. 1 Clinical Medical College Nanjing University of Chinese Medicine Nanjing People's Republic of China
| | - Guoshun Huang
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- No. 1 Clinical Medical College Nanjing University of Chinese Medicine Nanjing People's Republic of China
| | - Hongwei Ge
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- No. 1 Clinical Medical College Nanjing University of Chinese Medicine Nanjing People's Republic of China
| | - Yiye Zhu
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- No. 1 Clinical Medical College Nanjing University of Chinese Medicine Nanjing People's Republic of China
| | - Yang Yang
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- No. 1 Clinical Medical College Nanjing University of Chinese Medicine Nanjing People's Republic of China
| | - Yongfei Yu
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- No. 1 Clinical Medical College Nanjing University of Chinese Medicine Nanjing People's Republic of China
| | - Fang Tian
- Research Center of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
| | - Kun Gao
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- Inheritance Studio of Traditional Chinese Medicine Master Yanqin Zou Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
| | - Enchao Zhou
- Division of Nephrology, Affiliated Hospital of Nanjing University of Chinese Medicine Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
- Inheritance Studio of Traditional Chinese Medicine Master Yanqin Zou Jiangsu Province Hospital of Chinese Medicine Nanjing People's Republic of China
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27
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Xue J, Xu J, Zhao M, Jin A, Cheng A, Jiang X, Li K, Lin J, Meng X, Li H, Zheng L, Wang Y. Residual Risk of Trimethylamine-N-Oxide and Choline for Stroke Recurrence in Patients With Intensive Secondary Therapy. J Am Heart Assoc 2022; 11:e027265. [PMID: 36193936 DOI: 10.1161/jaha.122.027265] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Background Trimethylamine N-oxide (TMAO) contributes to cardiovascular disease through its prothrombotic, proatherothrombotic, and proinflammatory effects. We aimed to evaluate whether residual risk of recurrent stroke of TMAO and its precursor choline remain among patients who received dual-antiplatelet therapy and intensive lipid-lowering therapy and with a low inflammation level (high-sensitivity C-reactive protein <2 mg/L on admission). Methods and Results Patients with ischemic stroke or transient ischemic attack were enrolled from the CNSR-III (Third China National Stroke Registry) in China. Plasma TMAO and choline concentrations at baseline were measured in 9793 participants using liquid chromatography-mass spectrometry. The primary outcome was a new stroke within 1 year. Multivariable-adjusted hazard ratios were calculated using Cox regression models to investigate the associations of TMAO and choline with stroke recurrence. Among all patients, elevated TMAO and choline levels were associated with an increased risk of recurrent stroke (adjusted hazard ratios, 1.28 [95% CI, 1.12-1.45]; and 1.50 [95% CI, 1.32-1.71], respectively). Moreover, elevated TMAO and choline levels were associated with an increased risk of recurrent stroke among patients who received dual-antiplatelet therapy (1.65 [95% CI, 1.28-2.13]; and 1.70 [95% CI, 1.32-2.19], respectively), intensive lipid-lowering therapy (1.49 [95% CI, 1.15-1.94]; and 1.49 [95% CI, 1.15-1.92], respectively), with high-sensitivity C-reactive protein <2 mg/L (1.39 [95% CI, 1.14-1.69]; and 1.88 [95% CI, 1.53-2.30], respectively), and concurrently received dual-antiplatelet therapy, intensive lipid-lowering therapy and with high-sensitivity C-reactive protein <2 mg/L (3.57 [95% CI, 1.73-7.38]; and 2.19 [95% CI, 1.16-4.16], respectively). Conclusions TMAO and choline were risk factors for recurrent stroke independent of dual-antiplatelet therapy, intensive lipid-lowering therapy at discharge, and low inflammation on admission.
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Affiliation(s)
- Jing Xue
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Jie Xu
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Mingming Zhao
- The Institute of Cardiovascular Sciences and Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Health Science Center Peking University Beijing China
| | - Aoming Jin
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Aichun Cheng
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Xue Jiang
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Ke Li
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Jinxi Lin
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Xia Meng
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Hao Li
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China
| | - Lemin Zheng
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China.,The Institute of Cardiovascular Sciences and Institute of Systems Biomedicine, School of Basic Medical Sciences, Key Laboratory of Molecular Cardiovascular Sciences of Ministry of Education, NHC Key Laboratory of Cardiovascular Molecular Biology and Regulatory Peptides, Beijing Key Laboratory of Cardiovascular Receptors Research, Health Science Center Peking University Beijing China
| | - Yongjun Wang
- Department of Neurology Beijing Tiantan Hospital, Capital Medical University Beijing China.,China National Clinical Research Center for Neurological Diseases Capital Medical University Beijing China.,Advanced Innovation Center for Human Brain Protection Capital Medical University Beijing China.,Center for Excellence in Brain Science and Intelligence Technology, Chinese Academy of Sciences Beijing China
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28
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Trimethylamine N-Oxide (TMAO) and Indoxyl Sulfate Concentrations in Patients with Alcohol Use Disorder. Nutrients 2022; 14:nu14193964. [PMID: 36235617 PMCID: PMC9572718 DOI: 10.3390/nu14193964] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/14/2022] [Accepted: 09/21/2022] [Indexed: 11/16/2022] Open
Abstract
Background: Trimethylamine N-oxide (TMAO) and indoxyl sulfate (IS) are produced by the microbiota and the liver, and can contribute to brain aging and impaired cognitive function. This study aims to examine serum TMAO and IS concentrations in patients with alcohol-use disorder (AUD) at the entry for alcohol withdrawal, and the relationships with several biological, neuropsychological, and clinical parameters. Methods: TMAO and IS were quantified in thirty AUD inpatients and fifteen healthy controls (HC). The severities of AUD and alcohol withdrawal syndrome (AWS), and general cognitive abilities were assessed in AUD patients. Results: TMAO concentrations did not differ between HC and AUD patients. Several biomarkers assessing nutritional status and liver function were significantly different in AUD patients with the lowest TMAO concentrations compared to other AUD patients. IS concentration was significantly lower in AUD patients and a significant positive predictor of serum prealbumin variation during the acute phase of alcohol withdrawal. No relationship was observed between the concentrations of these metabolites and the severities of alcohol dependence, AWS, or cognitive deficits. Conclusions: Our data suggest that AUD patients with low concentrations of TMAO or IS should probably benefit from a personalized refeeding program during the acute phase of alcohol withdrawal.
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29
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The Role of a Gut Microbial-Derived Metabolite, Trimethylamine N-Oxide (TMAO), in Neurological Disorders. Mol Neurobiol 2022; 59:6684-6700. [DOI: 10.1007/s12035-022-02990-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/07/2022] [Indexed: 10/15/2022]
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30
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Associations of Diet with Urinary Trimethylamine-N-Oxide (TMAO) and Its Precursors among Free-Living 10-Year-Old Children: Data from SMBCS. Nutrients 2022; 14:nu14163419. [PMID: 36014922 PMCID: PMC9413070 DOI: 10.3390/nu14163419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 08/15/2022] [Accepted: 08/16/2022] [Indexed: 12/02/2022] Open
Abstract
Trimethylamine-N-oxide (TMAO), a diet-derived cometabolite linked to cardiometabolic disease, has been associated with elevated dietary status, particularly in people with kidney failure and adults with dietary modulations. However, the influence of the current diet on TMAO levels in free-living children has not been adequately described. This study was to explore associations of food compositions and dietary diversity with urinary TMAO and its precursor concentrations. Urinary TMAO and its precursor concentrations of 474 healthy children from the Sheyang Mini Birth Cohort were quantified by ultra-performance liquid chromatography−Q Exactive high-resolution mass spectrometer (UPLC-Q Exactive HRMS). Individual food compositions from 24 h dietary recall data were classified into 20 groups and diversity scores were calculated according to the guidelines of the Food and Agriculture Organization of the United Nations (FAO). Associations of urinary TMAO and its precursors with food compositions and dietary diversity scores were assessed by generalized linear regression models. In models adjusted for potential confounders, urinary TMAO was significantly associated with intakes of fish (β, regression coefficient = 0.155, p < 0.05) and vegetables (β = 0.120, p < 0.05). Eggs intake showed positive associations with TMAO’s precursors (trimethylamine: β = 0.179, p < 0.05; choline: β = 0.181, p < 0.05). No association between meat intake and TMAO was observed, whereas meat and poultry intakes were related to the levels of acetyl-L-carnitine and L-carnitine (β: 0.134 to 0.293, p < 0.05). The indicators of dietary diversity were positively correlated to TMAO concentration (β: 0.027 to 0.091, p < 0.05). In this free-living children-based study, dietary factors were related to urinary TMAO and its precursors, especially fish, meat, and eggs. As such, dietary diversity was positively related to the level of TMAO.
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Trimethylamine N-oxide facilitates the progression of atrial fibrillation in rats with type 2 diabetes by aggravating cardiac inflammation and connexin remodeling. J Physiol Biochem 2022; 78:855-867. [PMID: 35962903 DOI: 10.1007/s13105-022-00908-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2022] [Accepted: 06/20/2022] [Indexed: 10/15/2022]
Abstract
Diabetes is an independent risk factor for atrial fibrillation (AF). This study aimed to elucidate the pathophysiology of diabetes-related AF from the perspective of the gut microbial metabolite trimethylamine N-oxide (TMAO). In the present study, male rats received either a normal diet to serve as the control group or a high-fat diet/streptozotocin to induce type 2 diabetes mellitus. Then, diabetic rats were divided into two groups based on the presence or absence of 3,3-dimethyl-1-butanol (DMB, a specific TMAO inhibitor) in drinking water: the diabetic cardiomyopathy (DCM) group and the DCM + DMB group. Eight weeks later, compared with control rats, rats in the DCM group exhibited gut microbiota dysbiosis and systemic TMAO elevation. The inflammatory cytokines IL-1β, IL-6, and TNF-α were markedly increased in the atria of rats in the DCM group. Downregulated expression of connexin 40 and lateralized distribution of connexin 43 were also observed in the atria of DCM rats. AF inducibility was significantly higher in DCM rats than in control rats. Furthermore, DMB treatment effectively ameliorated atrial inflammation and connexin remodeling while markedly reducing plasma TMAO levels. DMB treatment also decreased the vulnerability of diabetic rats to AF. In conclusion, TMAO might promote atrial inflammation and connexin remodeling in the development of diabetes, which may play a key role in mediating diabetes-related AF.
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Xiong X, Zhou J, Fu Q, Xu X, Wei S, Yang S, Chen B. The associations between TMAO-related metabolites and blood lipids and the potential impact of rosuvastatin therapy. Lipids Health Dis 2022; 21:60. [PMID: 35864500 PMCID: PMC9306211 DOI: 10.1186/s12944-022-01673-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Accepted: 07/12/2022] [Indexed: 11/19/2022] Open
Abstract
Background Trimethylamine N-oxide (TMAO)-related metabolites are associated with the pathogenesis of atherosclerotic cardiovascular disease (ASCVD) and are known to disrupt lipid metabolism. The aims of this study were to evaluate the associations between TMAO-related metabolites and blood lipids and determine how lowering the lipid profile via rosuvastatin therapy influences TMAO-related metabolites. Methods A total of 112 patients with suspected ASCVD were enrolled in this study. The levels of plasma TMAO-related metabolites, including TMAO, choline, carnitine, betaine, and γ-butyrobetaine (GBB), were analyzed by stable isotope dilution liquid chromatography-tandem mass spectrometry (LC/MS/MS) before and after rosuvastatin therapy in all patients. Statistical methods were used to detect the associations between TMAO-related metabolites and blood lipids and determine how rosuvastatin therapy alters the levels of these metabolites. Results A significant positive correlation was found between TMAO and triglycerides (TG) (r = 0.303, P < 0.05). Furthermore, significant negative correlations were found between TMAO and high-density lipoprotein cholesterol (HDL-c) and between betaine and low-density lipoprotein cholesterol (LDL-c) (r = − 0.405 and − 0.308, respectively, both P < 0.01). Compared to baseline, significantly lower TMAO levels and higher carnitine, betaine and GBB levels were observed after rosuvastatin therapy, while the lipids decreased significantly (P < 0.05). The significant correlation between TMAO and TG or between betaine and LDL-c disappeared after rosuvastatin therapy (r = 0.050 and − 0.172, respectively, both P > 0.05). However, a significantly positive association between carnitine and TC and a negative association between carnitine and LDL-c or between betaine and TG were found after adjustment for sex, age, body mass index (BMI) and lipids (P < 0.05). Conclusions This study suggests that TMAO-related metabolites are significantly associated with blood lipids, although some of them are changed postrosuvastatin therapy. Lower TMAO and higher TMAO precursors were observed after rosuvastatin therapy compared to baseline. This study indicates that elevated TMAO precursors after rosuvastatin therapy and their potential impact on ASCVD should be considered in the clinic. Supplementary Information The online version contains supplementary material available at 10.1186/s12944-022-01673-3.
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Affiliation(s)
- Xiaowei Xiong
- Department of Cardiology and Macrovascular Disease, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Jian Zhou
- Department of Cardiovascular Medicine, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Qiang Fu
- Department of Cardiology and Macrovascular Disease, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Xiaowei Xu
- Department of Cardiology and Macrovascular Disease, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Shaobin Wei
- Department of Cardiology and Macrovascular Disease, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Shenghua Yang
- Department of Cardiology and Macrovascular Disease, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
| | - Buxing Chen
- Department of Cardiology, Beijing University of Chinese Medicine Third Affiliated Hospital, No. 51, Xiaoguan Street, Andingmenwai, Chaoyang District, Beijing, 100029, China.
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Wu Y, Rong X, Pan M, Wang T, Yang H, Chen X, Xiao Z, Zhao C. Integrated Analysis Reveals the Gut Microbial Metabolite TMAO Promotes Inflammatory Hepatocellular Carcinoma by Upregulating POSTN. Front Cell Dev Biol 2022; 10:840171. [PMID: 35676936 PMCID: PMC9167932 DOI: 10.3389/fcell.2022.840171] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Accepted: 01/12/2022] [Indexed: 12/12/2022] Open
Abstract
Liver cancer has a high mortality rate. Chronic inflammation is one of the leading causes of hepatocellular carcinoma. Recent studies suggested high levels of trimethylamine N-oxide (TMAO) may correlate with increased risk of inflammatory-induced liver cancer. However, the mechanisms by which TMAO promotes liver cancer remain elusive. Here, we established a model of inflammatory-induced liver cancer by treating Hepa1-6 cells and Huh7 cells with TNF-α. TMAO synergistically increased the proliferation, migration and invasion of Hepa1-6 cells and Huh7 cells in the presence of TNF-α. We conducted bulk RNA-Seq of the TMAO-treated cell model of inflammatory Hepatocellular carcinoma (HCC) and evaluated the influence of the differentially expressed genes (DEGs) on clinical prognosis using Kaplan-Meier Plotter Database and Gene Expression Profiling Interactive Analysis (GEPIA) database. Univariate and multivariate Cox regression analyses of tumor microenvironment and DEGs were performed using Timer2.0. Upregulation of POSTN, LAYN and HTRA3 and downregulation of AANAT and AFM were positively related to poorer overall survival in human liver cancer. Moreover, higher expression of POSTN and HTRA3 positively correlated with infiltration of neutrophils, which can promote tumor progression. In vitro experiments showed TMAO activates ILK/AKT/mTOR signaling via POSTN, and knocking down POSTN significantly reduced ILK/AKT/mTOR signaling and the tumorigenicity of Hepa1-6 cells and Huh7 cells. Collectively, our results suggest the gut microbial metabolite TMAO and POSTN may represent potential therapeutic targets for liver cancer.
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Affiliation(s)
- Yonglin Wu
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
| | - Xingyu Rong
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
| | - Miaomiao Pan
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
| | - Tongyao Wang
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
| | - Hao Yang
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
| | - Xiejiu Chen
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
| | - Zhenming Xiao
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
| | - Chao Zhao
- Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College and National Clinical Research Center for Aging and Medicine, Shanghai Medical College, Huashan Hospital, Fudan University, Shanghai, China
- Shanghai Frontiers Science Center of Pathogenic Microbes and Infection, Shanghai, China
- *Correspondence: Chao Zhao,
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Basak S, Banerjee A, Pathak S, Duttaroy AK. Dietary Fats and the Gut Microbiota: Their impacts on lipid-induced metabolic syndrome. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
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Diet, Fecal Microbiome, and Trimethylamine N-Oxide in a Cohort of Metabolically Healthy United States Adults. Nutrients 2022; 14:nu14071376. [PMID: 35405993 PMCID: PMC9003533 DOI: 10.3390/nu14071376] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Revised: 03/23/2022] [Accepted: 03/24/2022] [Indexed: 02/08/2023] Open
Abstract
TMAO is elevated in individuals with cardiometabolic diseases, but it is unknown whether the metabolite is a biomarker of concern in healthy individuals. We conducted a cross-sectional study in metabolically healthy adults aged 18-66 years with BMI 18-44 kg/m2 and assessed the relationship between TMAO and diet, the fecal microbiome, and cardiometabolic risk factors. TMAO was measured in fasted plasma samples by liquid chromatography mass spectrometry. The fecal microbiome was assessed by 16S ribosomal RNA sequencing and recent food intake was captured by multiple ASA24 dietary recalls. Endothelial function was assessed via EndoPAT. Descriptive statistics were computed by fasting plasma TMAO tertiles and evaluated by ANOVA and Tukey's post-hoc test. Multiple linear regression was used to assess the relationship between plasma TMAO and dietary food intake and metabolic health parameters. TMAO concentrations were not associated with average intake of animal protein foods, fruits, vegetables, dairy, or grains. TMAO was related to the fecal microbiome and the genera Butyribrio, Roseburia, Coprobaciullus, and Catenibacterium were enriched in individuals in the lowest versus the highest TMAO tertile. TMAO was positively associated with α-diversity and compositional differences were identified between groups. TMAO was not associated with classic cardiovascular risk factors in the healthy cohort. Similarly, endothelial function was not related to fasting TMAO, whereas the inflammatory marker TNF-α was significantly associated. Fasting plasma TMAO may not be a metabolite of concern in generally healthy adults unmedicated for chronic disease. Prospective studies in healthy individuals are necessary.
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Loo RL, Chan Q, Nicholson JK, Holmes E. Balancing the Equation: A Natural History of Trimethylamine and Trimethylamine- N-oxide. J Proteome Res 2022; 21:560-589. [PMID: 35142516 DOI: 10.1021/acs.jproteome.1c00851] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Trimethylamine (TMA) and its N-oxide (TMAO) are ubiquitous in prokaryote and eukaryote organisms as well as in the environment, reflecting their fundamental importance in evolutionary biology, and their diverse biochemical functions. Both metabolites have multiple biological roles including cell-signaling. Much attention has focused on the significance of serum and urinary TMAO in cardiovascular disease risk, yet this is only one of the many facets of a deeper TMA-TMAO partnership that reflects the significance of these metabolites in multiple biological processes spanning animals, plants, bacteria, and fungi. We report on analytical methods for measuring TMA and TMAO and attempt to critically synthesize and map the global functions of TMA and TMAO in a systems biology framework.
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Affiliation(s)
- Ruey Leng Loo
- Centre for Computational and Systems Medicine, Health Futures Institute, Murdoch University, 5 Robin Warren Drive, Perth, Western Australia 6150, Australia.,The Australian National Phenome Centre, Health Futures Institute, Murdoch University, 5 Robin Warren Drive, Perth, Western Australia 6150, Australia
| | - Queenie Chan
- Department of Epidemiology and Biostatistics, School of Public Health, Imperial College London, London W2 1PG, United Kingdom.,MRC Centre for Environment and Health, School of Public Health, Imperial College London, London W2 1PG, United Kingdom
| | - Jeremy K Nicholson
- Centre for Computational and Systems Medicine, Health Futures Institute, Murdoch University, 5 Robin Warren Drive, Perth, Western Australia 6150, Australia.,The Australian National Phenome Centre, Health Futures Institute, Murdoch University, 5 Robin Warren Drive, Perth, Western Australia 6150, Australia.,Institute of Global Health Innovation, Imperial College London, Level 1, Faculty Building, South Kensington Campus, London SW7 2NA, United Kingdom
| | - Elaine Holmes
- Centre for Computational and Systems Medicine, Health Futures Institute, Murdoch University, 5 Robin Warren Drive, Perth, Western Australia 6150, Australia.,The Australian National Phenome Centre, Health Futures Institute, Murdoch University, 5 Robin Warren Drive, Perth, Western Australia 6150, Australia.,Nutrition Research, Department of Metabolism, Nutrition and Reproduction, Faculty of Medicine, Imperial College London, Sir Alexander Fleming Building, London SW7 2AZ, United Kingdom
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Huang Q, Cai G, Liu T, Liu Z. Relationships Among Gut Microbiota, Ischemic Stroke and Its Risk Factors: Based on Research Evidence. Int J Gen Med 2022; 15:2003-2023. [PMID: 35795301 PMCID: PMC9252587 DOI: 10.2147/ijgm.s353276] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Accepted: 02/08/2022] [Indexed: 11/27/2022] Open
Abstract
Stroke is a highly lethal disease and disabling illness while ischemic stroke accounts for the majority of stroke. It has been found that inflammation plays a key role in the initiation and progression of stroke, and atherosclerotic plaque rupture is considered to be the leading cause of ischemic stroke. Furthermore, chronic inflammatory diseases, such as obesity, type 2 diabetes mellitus (T2DM) and hypertension, are also considered as the high-risk factors for stroke. Recently, the topic on how gut microbiota affects human health has aroused great concern. The initiation and progression of ischemic stroke has been found to have close relation with gut microbiota dysbiosis. Hence, this manuscript briefly summarizes the roles of gut microbiota in ischemic stroke and its related risk factors, and the practicability of preventing and alleviating ischemic stroke by reconstructing gut microbiota.
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Affiliation(s)
- Qinhong Huang
- First Clinical School, Guangzhou Medical University, Guangzhou, 511436, People’s Republic of China
| | - Guannan Cai
- First Clinical School, Guangzhou Medical University, Guangzhou, 511436, People’s Republic of China
| | - Ting Liu
- Guangzhou Key Laboratory of Enhanced Recovery after Abdominal Surgery, Innovation Center for Advanced Interdisciplinary Medicine, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700, People’s Republic of China
- Correspondence: Ting Liu; Zhihua Liu, Email ;
| | - Zhihua Liu
- Department of Anorectal Surgery, the Fifth Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510700, People’s Republic of China
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Blood Metabolomic Phenotyping of Dry Cows Could Predict the High Milk Somatic Cells in Early Lactation—Preliminary Results. DAIRY 2022. [DOI: 10.3390/dairy3010005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Subclinical mastitis (SCM) is a very common disease of dairy cows. Currently, somatic cell count (SCC) is used for SCM diagnoses. There are no prognostic tests to detect which cows may develop SCM during the dry-off period. Therefore, the objectives of this study were to identify metabolic alterations in the serum of pre-SCM cows during the dry-off period, at −8 and −4 weeks before calving, through a targeted mass spectrometry (MS) assay. Fifteen cows, free of any disease, and 10 cows affected only by SCM postpartum served as controls (CON) and the SCM group, respectively. Results showed 59 and 47 metabolites that differentiated (p ≤ 0.05) CON and pre-SCM cows at –8 and −4 weeks prior to the expected date of parturition, respectively. Regression analysis indicated that a panel of four serum metabolites (AUC = 0.92, p < 0.001) at −8 weeks and another four metabolites (AUC = 0.92, p < 0.01) at −4 weeks prior to parturition might serve as predictive biomarkers for SCM. Early identification of susceptible cows can enable development of better preventive measurements ahead of disease occurrence.
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Amrein M, Li XS, Walter J, Wang Z, Zimmermann T, Strebel I, Honegger U, Leu K, Schäfer I, Twerenbold R, Puelacher C, Glarner N, Nestelberger T, Koechlin L, Ceresa B, Haaf P, Bakula A, Zellweger M, Hazen SL, Mueller C. Gut microbiota-dependent metabolite trimethylamine N-oxide (TMAO) and cardiovascular risk in patients with suspected functionally relevant coronary artery disease (fCAD). Clin Res Cardiol 2022; 111:692-704. [PMID: 35220448 PMCID: PMC9151506 DOI: 10.1007/s00392-022-01992-6] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 02/10/2022] [Indexed: 12/29/2022]
Abstract
BACKGROUND Trimethylamine N-oxide (TMAO) has been associated with cardiovascular outcomes. However, the diagnostic value of TMAO and its precursors have not been assessed for functionally relevant coronary artery disease (fCAD) and its prognostic potential in this setting needs to be evaluated. METHODS Among 1726 patients with suspected fCAD serum TMAO, and its precursors betaine, choline and carnitine, were quantified using liquid chromatography tandem mass spectrometry. Diagnosis of fCAD was performed by myocardial perfusion single photon emission tomography (MPI-SPECT) and coronary angiography blinded to marker concentrations. Incident all-cause death, cardiovascular death (CVD) and myocardial infarction (MI) were assessed during 5-years follow-up. RESULTS Concentrations of TMAO, betaine, choline and carnitine were significantly higher in patients with fCAD versus those without (TMAO 5.33 μM vs 4.66 μM, p < 0.001); however, diagnostic accuracy was low (TMAO area under the receiver operating curve [AUC]: 0.56, 95% CI [0.53-0.59], p < 0.001). In prognostic analyses, TMAO, choline and carnitine above the median were associated with significantly (p < 0.001 for all) higher cumulative events for death and CVD during 5-years follow-up. TMAO remained a significant predictor for death and CVD even in full models adjusted for renal function (HR = 1.58 (1.16, 2.14), p = 0.003; HR = 1.66 [1.07, 2.59], p = 0.025). Prognostic discriminative accuracy for TMAO was good and robust for death and CVD (2-years AUC for CVD 0.73, 95% CI [0.65-0.80]). CONCLUSION TMAO and its precursors, betaine, choline and carnitine were significantly associated with fCAD, but with limited diagnostic value. TMAO was a strong predictor for incident death and CVD in patients with suspected fCAD. CLINICAL TRIAL REGISTRATION NCT01838148.
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Affiliation(s)
- Melissa Amrein
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Xinmin S. Li
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195 USA
| | - Joan Walter
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland ,Department of Radiology, University Hospital Zürich, University of Zürich, Zürich, Switzerland
| | - Zeneng Wang
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195 USA
| | - Tobias Zimmermann
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland ,Department of Internal Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Ivo Strebel
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Ursina Honegger
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Kathrin Leu
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Ibrahim Schäfer
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland ,Department of Internal Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Raphael Twerenbold
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Christian Puelacher
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland ,Department of Internal Medicine, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Noemi Glarner
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Thomas Nestelberger
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland ,Departement of Cardiology, University of British Columbia, Vancouver, Canada
| | - Luca Koechlin
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland ,Department of Cardiac Surgery, University Hospital Basel, University of Basel, Basel, Switzerland
| | - Benjamin Ceresa
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Philip Haaf
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Adam Bakula
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Michael Zellweger
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031 Basel, Switzerland
| | - Stanley L. Hazen
- Department of Cardiovascular and Metabolic Sciences, Lerner Research Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195 USA ,Department of Cardiovascular Medicine, Heart and Vascular Institute, Cleveland Clinic, 9500 Euclid Avenue, Cleveland, OH 44195 USA
| | - Christian Mueller
- Department of Cardiology, Cardiovascular Research Institute Basel (CRIB, University Hospital Basel, University of Basel, Petersgraben 4, CH-4031, Basel, Switzerland.
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Gut microbiota: A potential therapeutic target for management of diabetic retinopathy? Life Sci 2021; 286:120060. [PMID: 34666038 DOI: 10.1016/j.lfs.2021.120060] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 10/04/2021] [Accepted: 10/12/2021] [Indexed: 12/12/2022]
Abstract
Diabetic Retinopathy (DR) is one of the main complications of Diabetes Mellitus (DM), drastically impacting individuals of working age over the years, being one of the main causes of blindness in the world. The existing therapies for its treatment consist of measures that aim only to alleviate the existing clinical signs, associated with the microvasculature. These treatments are limited only to the advanced stages and not to the preclinical ones. In response to a treatment with little resolution and limited for many patients with DM, investigations of alternative therapies that make possible the improvement of the glycemic parameters and the quality of life of subjects with DR, become extremely necessary. Recent evidence has shown that deregulation of the microbiota (dysbiosis) can lead to low-grade, local and systemic inflammation, directly impacting the development of DM and its microvascular complications, including DR, in an axis called the intestine-retina. In this regard, the present review seeks to comprehensively describe the biochemical pathways involved in DR as well as the association of the modulation of these mechanisms by the intestinal microbiota, since direct changes in the microbiota can have a drastic impact on various physiological processes. Finally, emphasize the strong potential for modulation of the gut-retina axis, as therapeutic and prophylactic target for the treatment of DR.
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Fang Y, Yan C, Zhao Q, Xu J, Liu Z, Gao J, Zhu H, Dai Z, Wang D, Tang D. The roles of microbial products in the development of colorectal cancer: a review. Bioengineered 2021; 12:720-735. [PMID: 33618627 PMCID: PMC8806273 DOI: 10.1080/21655979.2021.1889109] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
A large number of microbes exist in the gut and they have the ability to process and utilize ingested food. It has been reported that their products are involved in colorectal cancer development. The molecular mechanisms which underlie the relationship between gut microbial products and CRC are still not fully understood. The role of some microbial products in CRC is particularly controversial. Elucidating the effects of gut microbiota products on CRC and their possible mechanisms is vital for CRC prevention and treatment. In this review, recent studies are examined in order to describe the contribution metabolites and toxicants which are produced by gut microbes make to CRC, primarily focusing on the involved molecular mechanisms.Abbreviations: CRC: colorectal cancer; SCFAs: short chain fatty acids; HDAC: histone deacetylase; TCA cycle: tricarboxylic acid cycle; CoA: cytosolic acyl coenzyme A; SCAD: short chain acyl CoA dehydrogenase; HDAC: histone deacetylase; MiR-92a: microRNA-92a; KLF4: kruppel-like factor; PTEN: phosphatase and tensin homolog; PI3K: phosphoinositide 3-kinase; PIP2: phosphatidylinositol 4, 5-biphosphate; PIP3: phosphatidylinositol-3,4,5-triphosphate; Akt1: protein kinase B subtype α; ERK1/2: extracellular signal-regulated kinases 1/2; EMT: epithelial-to-mesenchymal transition; NEDD9: neural precursor cell expressed developmentally down-regulated9; CAS: Crk-associated substrate; JNK: c-Jun N-terminal kinase; PRMT1: protein arginine methyltransferase 1; UDCA: ursodeoxycholic acid; BA: bile acids; CA: cholic acid; CDCA: chenodeoxycholic acid; DCA: deoxycholic acid; LCA: lithocholic acid; CSCs: cancer stem cells; MHC: major histocompatibility; NF-κB: NF-kappaB; GPR: G protein-coupled receptors; ROS: reactive oxygen species; RNS: reactive nitrogen substances; BER: base excision repair; DNA: deoxyribonucleic acid; EGFR: epidermal growth factor receptor; MAPK: mitogen activated protein kinase; ERKs: extracellular signal regulated kinases; AKT: protein kinase B; PA: phosphatidic acid; TMAO: trimethylamine n-oxide; TMA: trimethylamine; FMO3: flavin-containing monooxygenase 3; H2S: Hydrogen sulfide; SRB: sulfate-reducing bacteria; IBDs: inflammatory bowel diseases; NSAID: non-steroidal anti-inflammatory drugs; BFT: fragile bacteroides toxin; ETBF: enterotoxigenic fragile bacteroides; E-cadherin: extracellular domain of intercellular adhesive protein; CEC: colonic epithelial cells; SMOX: spermine oxidase; SMO: smoothened; Stat3: signal transducer and activator of transcription 3; Th17: T helper cell 17; IL17: interleukin 17; AA: amino acid; TCF: transcription factor; CDT: cytolethal distending toxin; PD-L1: programmed cell death 1 ligand 1.
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Affiliation(s)
- Yongkun Fang
- Department of Clinical Medical College, Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Cheng Yan
- Department of Clinical Medical College, Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Qi Zhao
- Department of Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
| | - Jiaming Xu
- Department of General Surgery, Institute of General Surgery, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Zhuangzhuang Liu
- Department of Clinical Medical College, Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Jin Gao
- Department of Clinical Medical College, Dalian Medical University, Dalian, Liaoning, P.R. China
| | - Hanjian Zhu
- Department of Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
| | - Zhujiang Dai
- Department of Clinical Medical College, Yangzhou University, Yangzhou, P.R. China
| | - Daorong Wang
- Department of General Surgery, Institute of General Surgery, Clinical Medical College, Yangzhou University, Yangzhou, China
| | - Dong Tang
- Department of General Surgery, Institute of General Surgery, Clinical Medical College, Yangzhou University, Yangzhou, China
- CONTACT Dong TangDepartment of General Surgery, Institute of General Surgery, Northern Jiangsu People’s Hospital, Clinical Medical College, Yangzhou University, Yangzhou225001, China
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Higher Trimethylamine- N-Oxide Plasma Levels with Increasing Age Are Mediated by Diet and Trimethylamine-Forming Bacteria. mSystems 2021; 6:e0094521. [PMID: 34519520 PMCID: PMC8547441 DOI: 10.1128/msystems.00945-21] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The gut microbiota-dependent metabolite trimethylamine-N-oxide (TMAO) is linked to an increased risk for cardiovascular diseases. Trimethylamine (TMA), which is subsequently oxidized to TMAO in the liver, is formed by intestinal bacteria via distinct biochemical routes from dietary precursors that are enriched in animal product-based foods. To get a full picture of the entire process of the diet > gut microbiota > TMAO axis, we quantified potential TMA-forming gut bacteria and plasma metabolites using gene-targeted assays and targeted metabolomics on a subsample (n = 425) of a German population-based cohort study. We specifically compared persons reporting daily meat intake with those that rarely or never consume meat. While meat intake did not predict TMAO plasma levels in our study, two major bacterial TMA-forming pathways were linked to the metabolite's concentration. Furthermore, advancing age was strongly associated with TMAO. Construction of a structural equation model allowed us to disentangle the different routes that promote higher TMAO levels with increasing age, demonstrating, for the first time, a functional role of gut microbiota in the process, where specific food items augmented abundances of TMA-forming bacteria that were associated with higher TMAO plasma concentrations. Analyses stratified by age showed an association between carotid intima-media thickness and TMAO only in individuals >65 of age, indicating that this group is particularly affected by the metabolite. IMPORTANCE Many cohort studies have investigated the link between diet and plasma TMAO levels, reporting incongruent results, while gut microbiota were only recently included into analyses. In these studies, taxonomic data were recorded that are not a good proxy for TMA formation, as specific members of various taxa exhibit genes catalyzing this reaction, demanding function-based technologies for accurate quantification of TMA-synthesizing bacteria. Using this approach, we demonstrated that abundances of the main components leading to TMAO formation, i.e., TMA precursors and TMA-forming bacteria, are uncoupled and not governed by the same (dietary) factors. Results emphasize that all levels leading to TMA(O) formation should be considered for accurate risk assessment, rejecting the simple view that diets rich in TMA precursors directly lead to increased plasma levels of this hazardous compound. The results can assist in developing strategies to reduce TMAO levels, specifically in the elderly, who are prone to TMAO-associated diseases.
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Kochetkov AI, Klepikova MV, Ostroumova OD. Trimethylamine oxide and its possible role in the development and progression of cardiovascular disease. КАРДИОВАСКУЛЯРНАЯ ТЕРАПИЯ И ПРОФИЛАКТИКА 2021. [DOI: 10.15829/1728-8800-2021-3014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Cardiovascular diseases continue to be the leading cause of death throughout the world and in Russia. Therefore, new possible risk factors for their development and progression are being studied. To date, information have been accumulated on unfavorable prognostic effect of elevated trimethylamine oxide (TMAO) levels on cardiovascular events, and the possible role of phospholipids (PLs) is being discussed. The aim of this review was to analyze the literature data on the potential relationship of TMAO and PLs with cardiovascular risk (CVR), as well as possible solutions to this problem. The search and analysis of publications was performed using Elibrary, PubMed, Medline, and Google Scholar databases in the period from their creation to 2021. It was found that high TMAO concentrations can have pro-inflammatory effects, stimulate atherogenesis and increase platelet aggregation. An increase in the blood TMAO levels increases the risk of cardiovascular events in patients with coronary artery disease, is associated with an increased risk of cardiovascular and all-cause death in patients with peripheral arterial disease and heart failure, and correlates with the extent of brain regions involved in stroke. The most important part in TMAO formation is taken by the gut microbiota, which metabolizes substrates, including PLs, to trimethylamine, which, when absorbed, is converted into TMAO in the liver. The analysis of available studies shows that the excessive intake of PLs into the gastrointestinal tract and the increased TMAO production are potentially interrelated with an increase in CVR. At the same time, PLs are currently used as drugs, in particular, as hepatoprotective agents. In view of this, large-scale randomized clinical trials are needed to study the CVR profile in patients receiving such therapy. Currently, other hepatoprotective agents are available that are devoid of such potential risks, since they do not contain PLs. One of these agents is ursodeoxycholic acid, which has proven its effectiveness and safety, including in patients with high CVR in routine clinical practice.
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Affiliation(s)
- A. I. Kochetkov
- Russian Medical Academy of Continuous Professional Education
| | - M. V. Klepikova
- Russian Medical Academy of Continuous Professional Education
| | - O. D. Ostroumova
- Russian Medical Academy of Continuous Professional Education; I.M. Sechenov First Moscow State Medical University
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Van Parys A, Brække MS, Karlsson T, Vinknes KJ, Tell GS, Haugsgjerd TR, Ueland PM, Øyen J, Dierkes J, Nygård O, Lysne V. Assessment of Dietary Choline Intake, Contributing Food Items, and Associations with One-Carbon and Lipid Metabolites in Middle-Aged and Elderly Adults: The Hordaland Health Study. J Nutr 2021; 152:513-524. [PMID: 34643705 PMCID: PMC8826836 DOI: 10.1093/jn/nxab367] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Revised: 08/19/2021] [Accepted: 10/08/2021] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Choline is an essential nutrient for humans and is involved in various physiologic functions. Through its metabolite betaine, it is closely connected to the one-carbon metabolism, and the fat-soluble choline form phosphatidylcholine is essential for VLDL synthesis and secretion in the liver connecting choline to the lipid metabolism. Dietary recommendations for choline are not available in the Nordic countries primarily due to data scarcity. OBJECTIVES The aim of this study was to investigate the dietary intake of total choline and individual choline forms, dietary sources, and the association of total choline intake with circulating one-carbon metabolites and lipids. METHODS We included 5746 participants in the Hordaland Health Study, a survey including community-dwelling adults born in 1925-1927 (mean age 72 y, 55% women) and 1950-1951 (mean age 48 y, 57% women). Dietary data were obtained using a 169-item FFQ, and choline content was calculated using the USDA Database for Choline Content of Common Foods, release 2. Metabolites of the one-carbon and lipid metabolism were measured in a nonfasting blood sample obtained at baseline, and the association with total choline intake was assessed using polynomial splines. RESULTS The geometric mean (95% prediction interval) energy-adjusted total choline intake was 260 (170, 389) mg/d, with phosphatidylcholine being the main form (44%). The major food items providing dietary choline were eggs, low-fat milk, potatoes, and leafy vegetables. Dietary total choline was inversely associated with circulating concentrations of total homocysteine, glycine, and serine and positively associated with choline, methionine, cystathionine, cysteine, trimethyllysine, trimethylamine-N-oxide, and dimethylglycine. A weak association was observed between choline intake and serum lipids. CONCLUSIONS Phosphatidylcholine was the most consumed choline form in community-dwelling adults in Norway. Our findings suggest that choline intake is associated with the concentration of most metabolites involved in the one-carbon and lipid metabolism.
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Affiliation(s)
| | - Maria Sandvik Brække
- Centre for Nutrition, Department of Clinical Science, University of Bergen, Bergen, Norway
| | - Therese Karlsson
- Department of Internal Medicine and Clinical Nutrition, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Kathrine J Vinknes
- Department of Nutrition, Institute of Basic Medical Sciences, Faculty of Medicine, University of Oslo, Oslo, Norway
| | - Grethe S Tell
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | - Teresa R Haugsgjerd
- Department of Global Public Health and Primary Care, University of Bergen, Bergen, Norway
| | | | | | - Jutta Dierkes
- Mohn Nutrition Research Laboratory, University of Bergen, Bergen, Norway,Centre for Nutrition, Department of Clinical Medicine, University of Bergen, Bergen, Norway,Department of Laboratory Medicine and Pathology, Haukeland University Hospital, Bergen, Norway
| | - Ottar Nygård
- Centre for Nutrition, Department of Clinical Science, University of Bergen, Bergen, Norway,Mohn Nutrition Research Laboratory, University of Bergen, Bergen, Norway,Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
| | - Vegard Lysne
- Centre for Nutrition, Department of Clinical Science, University of Bergen, Bergen, Norway,Mohn Nutrition Research Laboratory, University of Bergen, Bergen, Norway,Department of Heart Disease, Haukeland University Hospital, Bergen, Norway
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Costabile G, Vetrani C, Bozzetto L, Giacco R, Bresciani L, Del Rio D, Vitale M, Della Pepa G, Brighenti F, Riccardi G, Rivellese AA, Annuzzi G. Plasma TMAO increase after healthy diets: results from 2 randomized controlled trials with dietary fish, polyphenols, and whole-grain cereals. Am J Clin Nutr 2021; 114:1342-1350. [PMID: 34091663 DOI: 10.1093/ajcn/nqab188] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 05/13/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Plasma trimethylamine N-oxide (TMAO) has drawn much attention as a marker of several chronic diseases. Data on the relation between diet and TMAO are discordant and few human intervention studies have assessed causality for this association. OBJECTIVES We aimed to evaluate the effects on plasma TMAO of diets based on foods rich in polyphenols (PP) and/or long-chain n-3 fatty acids (LCn3) or whole-grain cereals (WGCs), in individuals at high cardiometabolic risk. METHODS An ancillary study was performed within 2 randomized controlled trials, aimed at evaluating the medium-term effects on cardiometabolic risk factors of diets naturally rich in PP and/or LCn3 (Etherpaths Project) or WGCs (HealthGrain Project). RESULTS In the Etherpaths study (n = 78), the changes in TMAO (8-wk minus baseline) were statistically significant for the diets rich in LCn3 (+1.15 ± 11.58 μmol/L) (P = 0.007), whereas they were not for the diets rich in PP (-0.14 ± 9.66 μmol/L) (P = 0.905) or their interaction (P = 0.655) (2-factor ANOVA). In the HealthGrain Study (n = 48), the TMAO change (12-wk minus baseline) in the WGC group (+0.94 ± 3.58 μmol/L) was significantly different from that in the Refined Cereal group (-1.29 ± 3.09 μmol/L) (P = 0.037). Considering the pooled baseline data of the participants in the 2 studies, TMAO concentrations directly correlated with LCn3, EPA (20:5n-3), and protein intake, but not SFAs, fiber, MUFAs, and PP intake. Among food groups, TMAO directly correlated with the intake of fish, vegetables, and whole-grain products, but not meat, processed meat, and dairy products. CONCLUSIONS Diets rich in LCn3 of marine origin or WGCs significantly increased plasma TMAO concentration. These changes mirrored the direct associations between TMAO concentrations and intakes of fish and WGCs, suggesting that TMAO reflects intakes of these healthy foods and, therefore, it is not a universally valid biomarker of cardiometabolic risk independent of the background diet.These trials were registered at clinicaltrials.gov as NCT01154478 and NCT00945854.
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Affiliation(s)
- Giuseppina Costabile
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - Claudia Vetrani
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - Lutgarda Bozzetto
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - Rosalba Giacco
- Institute of Food Sciences, National Research Council, Avellino, Italy
| | - Letizia Bresciani
- Human Nutrition Unit, Department of Veterinary Science, University of Parma, Parma, Italy
| | - Daniele Del Rio
- Human Nutrition Unit, Department of Veterinary Science, University of Parma, Parma, Italy
| | - Marilena Vitale
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - Giuseppe Della Pepa
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - Furio Brighenti
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, Parma, Italy
| | - Gabriele Riccardi
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - Angela A Rivellese
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
| | - Giovanni Annuzzi
- Department of Clinical Medicine and Surgery, University of Naples "Federico II", Naples, Italy
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Annunziata G, Ciampaglia R, Capò X, Guerra F, Sureda A, Tenore GC, Novellino E. Polycystic ovary syndrome and cardiovascular risk. Could trimethylamine N-oxide (TMAO) be a major player? A potential upgrade forward in the DOGMA theory. Biomed Pharmacother 2021; 143:112171. [PMID: 34536755 DOI: 10.1016/j.biopha.2021.112171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 09/03/2021] [Accepted: 09/05/2021] [Indexed: 11/26/2022] Open
Abstract
Several studies reported an increase in cardiovascular risk (CVR) in women with polycystic ovary syndrome (PCOS), considered primarily as the result of the combination of all the clinical features that characterize the syndrome, including hyperandrogenism, insulin resistance, diabetes, obesity chronic low-grade inflammation. Interestingly, in 2012 it has been proposed the so-called DOGMA theory, suggesting the pivotal role played by microbiota alteration in the development of PCOS. Subsequently, several authors evidenced the existence in PCOS women of a marked dysbiosis, which is related to the development of metabolic diseases and cardiovascular complications, mainly due to the production of bacteria-derived metabolites that interfere with various pathways. Among these, trimethylamine-N-oxide (TMAO) is emerging as one of the most important and studied microbiota-derived metabolites related to the increase in CVR, due to its pro-atherosclerotic effect. The purpose of the present review is to summarize the evidence in order to support the hypothesis that, in women with PCOS, dysbiosis might be further involved in enhancement of the CVR via contributing to the increase of circulating TMAO. Although no observational studies on a large number of patients directly investigated the serum levels of TMAO in PCOS women, this manuscript aimed to drive future studies in this field, concurring in providing a novel approach for both comprehension and treatment of the CVR in PCOS.
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Affiliation(s)
- Giuseppe Annunziata
- NutraPharmaLabs, Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy.
| | - Roberto Ciampaglia
- NutraPharmaLabs, Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy.
| | - Xavier Capò
- Research Group in Community Nutrition and Oxidative Stress and Health Research Institute of the Balearic Islands (IdISBa), University of Balearic Islands-IUNICS, E-07122 Palma de Mallorca, Spain.
| | - Fabrizia Guerra
- NutraPharmaLabs, Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy.
| | - Antoni Sureda
- Research Group in Community Nutrition and Oxidative Stress and Health Research Institute of the Balearic Islands (IdISBa), University of Balearic Islands-IUNICS, E-07122 Palma de Mallorca, Spain; CIBEROBN (Physiopathology of Obesity and Nutrition), Instituto de Salud Carlos III, 28029 Madrid, Spain.
| | - Gian Carlo Tenore
- NutraPharmaLabs, Department of Pharmacy, University of Naples Federico II, Via Domenico Montesano 49, 80131 Naples, Italy.
| | - Ettore Novellino
- NGN Healthcare - New Generation Nutraceuticals s.r.l., Torrette Via Nazionale 207, 83013 Mercogliano, Avellino, Italy.
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Liu W, Ren C, Zhang W, Liu G, Lu P. Association between Dietary Choline Intake and Diabetic Retinopathy: National Health and Nutrition Examination Survey 2005-2008. Curr Eye Res 2021; 47:269-276. [PMID: 34328805 DOI: 10.1080/02713683.2021.1962361] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
PURPOSE To explore whether there is an association between dietary choline intake and odds of diabetic retinopathy (DR) in the US diabetic population. METHODS A cross-sectional study was conducted using the combined data of the National Health and Nutrition Examination Survey (NHANES) 2005-2008 of a complex, multistage, and probability-sampling design. Energy-adjusted choline intake was calculated separately for men and women using the residual method. Binary logistic regression adjusting for covariates was used to identify the variables associated with DR. RESULTS We included 644 male and 628 female diabetic subjects, which were equivalent to a weighted survey sample of 9,339,124 for males and 10,109,553 for females respectively. Female DR patients consumed more choline than non-DR patients (268.6 mg/d vs 250.9 mg/d; p = .046). The estimated prevalence of DR was 17.4%, 21.9%, and 29.7% across three levels of dietary choline intake in females, respectively. In multivariable logistic-regression models, the odds ratio (OR) of DR for female patients in the highest choline intake group was 2.14 (95% confidence interval [CI], 1.38-3.31; p = .001) compared with those in the lowest intake group. This association was positive but not statistically significant in males. CONCLUSION Higher intake of dietary choline is associated with increased odds of DR in females, but not in males. Further studies are warranted to investigate the direct role of choline in DR development and determine the recommended daily intake of choline for diabetic patients weighing the pros and cons of dietary choline consumption.
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Affiliation(s)
- Weiming Liu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Chi Ren
- Department of Ophthalmology, Peking University People's Hospital, Beijing, China
| | - Wenpeng Zhang
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Gaoqin Liu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Peirong Lu
- Department of Ophthalmology, The First Affiliated Hospital of Soochow University, Suzhou, China
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Myers WA, Wang F, Chang C, Davis AN, Rico JE, Tate BN, France TL, Wang LF, McFadden JW. Intravenous trimethylamine N-oxide infusion does not modify circulating markers of liver health, glucose tolerance, and milk production in early-lactation cows. J Dairy Sci 2021; 104:9948-9955. [PMID: 34176629 DOI: 10.3168/jds.2021-20169] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 04/30/2021] [Indexed: 11/19/2022]
Abstract
In rodents and humans, the gut bacteria-derived metabolite trimethylamine N-oxide (TMAO) has been implicated in the progression of cardiovascular disease, chronic kidney disease, fatty liver, and insulin resistance; however, the effects of TMAO on dairy cattle health and milk production have not been defined. We aimed to determine whether intravenous TMAO infusion modifies measures of liver health, glucose tolerance, and milk production in early-lactation cows. Eight early-lactation Holstein cows (30.4 ± 6.41 d in milk; 2.88 ± 0.83 lactations) were enrolled in a study with a replicated 4 × 4 Latin square design. Cows were intravenously infused TMAO at 0 (control), 20, 40, or 60 g/d for 6 d. Washout periods lasted 9 d. Intravenous glucose tolerance tests (GTT) occurred on d 5. Blood was collected daily. Milk was collected on d -1, 0, 5, and 6. Urine was collected on d -1 and 6. Circulating metabolites, milk components, and TMAO concentrations in milk, urine, and plasma were quantified. Data were analyzed using a mixed model that included the fixed effects of treatment. Concentrations of TMAO in plasma, milk, and urine increased linearly with increasing dose. Dry matter intake and milk production were not modified by treatment. Daily plasma triacylglycerol, fatty acid (FA), and glucose concentrations were not modified. Serum albumin, total protein, globulin, total bilirubin, direct bilirubin, aspartate aminotransferase, γ-glutamyl transferase, and glutamate dehydrogenase concentrations were also not modified by treatment. Serum GTT glucose, FA, and insulin concentrations were not modified by treatment. Plasma total, reduced, and oxidized glutathione concentrations were also not modified by treatment. We conclude that a 6-d intravenous infusion of TMAO does not influence measures of liver health, glucose tolerance, or milk production in early-lactation dairy cows.
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Affiliation(s)
- William A Myers
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - Feiran Wang
- Department of Animal Science, Cornell University, Ithaca, NY 14853; China Agricultural University, Beijing, China 830052
| | - Crystal Chang
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - Amanda N Davis
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - J Eduardo Rico
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - Brianna N Tate
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - Tanya L France
- Department of Animal Science, Cornell University, Ithaca, NY 14853
| | - Linfeng F Wang
- Department of Animal Science, Cornell University, Ithaca, NY 14853; Henan Agricultural University, Zhengzhou, China 450046
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Tilves C, Mueller NT. Trimethylamine N-oxide variation in humans: the product of a diet-microbiota interaction? Am J Clin Nutr 2021; 113:1400-1401. [PMID: 33876195 PMCID: PMC8168358 DOI: 10.1093/ajcn/nqab108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Affiliation(s)
- Curtis Tilves
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Noel T Mueller
- Department of Epidemiology, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
- Welch Center for Prevention, Epidemiology, and Clinical Research, Johns Hopkins University, Baltimore, MD, USA
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50
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Gessner A, di Giuseppe R, Koch M, Fromm MF, Lieb W, Maas R. Trimethylamine-N-oxide (TMAO) determined by LC-MS/MS: distribution and correlates in the population-based PopGen cohort. Clin Chem Lab Med 2021; 58:733-740. [PMID: 32084001 DOI: 10.1515/cclm-2019-1146] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Accepted: 01/26/2020] [Indexed: 01/16/2023]
Abstract
Background Accumulating evidence indicates that trimethylamine-N-oxide (TMAO) may play a causal role in cardiovascular disease (CVD), chronic kidney disease (CKD) and type 2 diabetes (T2D). TMAO plasma concentrations show considerable intra- and inter-individual variation, underscoring the need for a reference interval in the general population to identify elevated TMAO concentrations. Methods TMAO concentrations were determined using an LC-MS/MS assay in a community-based sample of the PopGen control cohort consisting of 694 participants (54% men; aged 25-82 years) free of clinical CVD, CKD and T2D. We defined reference intervals for TMAO concentrations in human plasma using the 2.5th and 97.5th percentiles. Using multivariable regression analysis we analyzed the association of estimated glomerular filtration rate (eGFR), sex, and dietary intake and TMAO plasma concentrations. Results TMAO plasma concentrations were positively skewed and differed by sex. The median TMAO plasma concentration in men was 3.91 (Q1-Q3: 2.87-6.10) μmol/L and the reference interval 1.28-19.67 μmol/L (2.5th-97.5th percentile). In women median TMAO plasma concentration was 3.56 (Q1-Q3: 2.41-5.15) μmol/L and the reference interval 1.08-17.12 μmol/L. In multivariable regression analysis plasma TMAO was associated with sex, renal function and diet. The association of TMAO and diet was significant for intake of fish and shellfish in men only. Conclusions In a community-based sample free of apparent CVD and renal disease, we report the distribution of TMAO plasma concentrations with sex, renal function and diet as factors associated with plasma TMAO, and suggest reference intervals. These data may facilitate standardized comparisons of TMAO across populations.
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Affiliation(s)
- Arne Gessner
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Romina di Giuseppe
- Institute of Epidemiology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Manja Koch
- Institute of Epidemiology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Martin F Fromm
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
| | - Wolfgang Lieb
- Institute of Epidemiology, University Hospital of Schleswig-Holstein, Campus Kiel, Kiel, Germany
| | - Renke Maas
- Institute of Experimental and Clinical Pharmacology and Toxicology, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany
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