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Burns KF, LaMonte MJ, Blair RH, Tabung FK, Rexrode KM, Snetselaar LG, Millen AE. Developing and evaluating the construct validity of a dietary pattern predictive of plasma TMAO and choline. Nutr Metab Cardiovasc Dis 2024; 34:2190-2202. [PMID: 39003134 DOI: 10.1016/j.numecd.2024.05.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 05/23/2024] [Accepted: 05/26/2024] [Indexed: 07/15/2024]
Abstract
BACKGROUND AND AIMS The metabolism of choline (highly present in animal products) can produce trimethylamine N-oxide (TMAO), a metabolite with atherosclerotic effects; however, dietary fiber may suppress this metabolic pathway. This study aimed to develop a dietary pattern predictive of plasma TMAO and choline concentrations using reduced rank regression (RRR) and to evaluate its construct validity. METHODS AND RESULTS Diet and plasma concentrations of choline (μmol/L) and TMAO (μmol/L) were assessed in 1724 post-menopausal women who participated in an ancillary study within the Women's Health Initiative Observational Study (1993-1998). The TMAO dietary pattern was developed using RRR in half of the sample (Training Sample) and applied to the other half of the sample (Validation Sample) to evaluate its construct validity. Energy-adjusted food groups were the predictor variables and plasma choline and TMAO, the response variables. ANCOVA and linear regression models were used to assess associations between each biomarker and the dietary pattern score. Discretionary fat, potatoes, red meat, and eggs were positively associated with the dietary pattern, while yogurt, fruits, added sugar, and starchy vegetables were inversely associated. Mean TMAO and choline concentrations significantly increased across increasing quartiles of the dietary pattern in the Training and Validation samples. Positive associations between the biomarkers and the TMAO dietary pattern were also observed in linear regression models (Validation Sample: TMAO, adjusted beta-coefficient = 0.037 (p-value = 0.0088); Choline, adjusted beta-coefficient = 0.011 (p-value = 0.0224). CONCLUSION We established the TMAO dietary pattern, a dietary pattern reflecting the potential of the diet to contribute to plasma concentrations of TMAO and choline.
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Affiliation(s)
- Kaelyn F Burns
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY 14214, USA.
| | - Michael J LaMonte
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY 14214, USA
| | | | - Fred K Tabung
- Department of Internal Medicine, The Ohio State University, Columbus, OH 43210, USA
| | - Kathryn M Rexrode
- Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA 02115, USA
| | - Linda G Snetselaar
- Department of Epidemiology, University of Iowa, Iowa City, IA 52242, USA
| | - Amy E Millen
- Department of Epidemiology and Environmental Health, University at Buffalo, Buffalo, NY 14214, USA
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2
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Torres Á, Quintanilla F, Barnafi E, Sánchez C, Acevedo F, Walbaum B, Merino T. Dietary Interventions for Cancer Prevention: An Update to ACS International Guidelines. Nutrients 2024; 16:2897. [PMID: 39275213 PMCID: PMC11396961 DOI: 10.3390/nu16172897] [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: 07/11/2024] [Revised: 08/22/2024] [Accepted: 08/26/2024] [Indexed: 09/16/2024] Open
Abstract
Cancer, the second leading cause of death worldwide, demands the identification of modifiable risk factors to optimize its prevention. Diet has emerged as a pivotal focus in current research efforts. This literature review aims to enhance the ACS guidelines on diet and cancer by integrating the latest findings and addressing unresolved questions. The methodology involved an advanced PubMed search with specific filters relevant to the research topic. Topics covered include time-restricted diet, diet quality, acid load, counseling, exercise and diet combination, Mediterranean diet, vegetarian and pescetarian diets, weight loss, dairy consumption, coffee and tea, iron, carbohydrates, meat, fruits and vegetables, heavy metals, micronutrients, and phytoestrogens. The review highlights the benefits of the Mediterranean diet in reducing cancer risk. Adherence to overnight fasting or carbohydrate consumption may contribute to cancer prevention, but excessive fasting may harm patients' quality of life. A vegetarian/pescetarian diet is associated with lower risks of general and colorectal cancer compared to a carnivorous diet. High heme and total iron intake are linked to increased lung cancer risk, while phytoestrogen intake is associated with reduced risk. Coffee and tea have a neutral impact on cancer risk. Finally, the roles of several preventive micronutrients and carcinogenic heavy metals are discussed.
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Affiliation(s)
- Álvaro Torres
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Francisca Quintanilla
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - Esteban Barnafi
- School of Medicine, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8331150, Chile
| | - César Sánchez
- Department of Hematology-Oncology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330077, Chile
| | - Francisco Acevedo
- Department of Hematology-Oncology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330077, Chile
| | - Benjamín Walbaum
- Department of Hematology-Oncology, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago 8330077, Chile
| | - Tomás Merino
- Cancer Center UC, Red de Salud Christus-UC, Santiago 8330032, Chile
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3
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Ahangari H, Bahramian B, Khezerlou A, Tavassoli M, Kiani‐Salmi N, Tarhriz V, Ehsani A. Association between monosodium glutamate consumption with changes in gut microbiota and related metabolic dysbiosis-A systematic review. Food Sci Nutr 2024; 12:5285-5295. [PMID: 39139924 PMCID: PMC11317663 DOI: 10.1002/fsn3.4198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 08/15/2024] Open
Abstract
Monosodium glutamate (MSG) is used as a common food additive in some foods. However, based on our search and knowledge, no comprehensive study discussed the effect of MSG on the human gut microbiome. In this study, the effects of MSG on the gut microbiome, liver, and kidney were performed. Data were collected from databases including PubMed, Scopus, Web of Science, and ScienceDirect using the search strategy and keywords. Finally, 14 eligible studies were selected for systematic review. This study provides a new perspective on the effects of MSG on the gut flora, shedding light on the potential relationship between MSG intake and human health.
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Affiliation(s)
- Hossein Ahangari
- Student Research CommitteeTabriz University of Medical SciencesTabrizIran
- Department of Food Science and Technology, Faculty of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
| | - Behnam Bahramian
- Department of Food Science and Technology, Faculty of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
| | - Arezou Khezerlou
- Department of Food Science and Technology, Faculty of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
| | - Milad Tavassoli
- Department of Food Science and Technology, Faculty of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
| | - Narges Kiani‐Salmi
- Department of Food Science and Technology, Faculty of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
| | - Vahideh Tarhriz
- Cardiovascular Center of ExcellenceLouisiana State University Health Sciences CenterNew OrleansLouisianaUSA
| | - Ali Ehsani
- Department of Food Science and Technology, Faculty of Nutrition and Food SciencesTabriz University of Medical SciencesTabrizIran
- Nutrition Research CenterTabriz University of Medical SciencesTabrizIran
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4
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Florkowski M, Abiona E, Frank KM, Brichacek AL. Obesity-associated inflammation countered by a Mediterranean diet: the role of gut-derived metabolites. Front Nutr 2024; 11:1392666. [PMID: 38978699 PMCID: PMC11229823 DOI: 10.3389/fnut.2024.1392666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Accepted: 06/03/2024] [Indexed: 07/10/2024] Open
Abstract
The prevalence of obesity has increased dramatically worldwide and has become a critical public health priority. Obesity is associated with many co-morbid conditions, including hypertension, diabetes, and cardiovascular disease. Although the physiology of obesity is complex, a healthy diet and sufficient exercise are two elements known to be critical to combating this condition. Years of research on the Mediterranean diet, which is high in fresh fruits and vegetables, nuts, fish, and olive oil, have demonstrated a reduction in numerous non-communicable chronic diseases associated with this diet. There is strong evidence to support an anti-inflammatory effect of the diet, and inflammation is a key driver of obesity. Changes in diet alter the gut microbiota which are intricately intertwined with human physiology, as gut microbiota-derived metabolites play a key role in biological pathways throughout the body. This review will summarize recent published studies that examine the potential role of gut metabolites, including short-chain fatty acids, bile acids, trimethylamine-N-oxide, and lipopolysaccharide, in modulating inflammation after consumption of a Mediterranean-like diet. These metabolites modulate pathways of inflammation through the NOD-like receptor family pyrin domain-containing 3 (NLRP3) inflammasome, toll-like receptor 4 signaling, and macrophage driven effects in adipocytes, among other mechanisms.
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Affiliation(s)
- Melanie Florkowski
- Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Esther Abiona
- Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Karen M Frank
- Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
| | - Allison L Brichacek
- Department of Laboratory Medicine, National Institutes of Health Clinical Center, Bethesda, MD, United States
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5
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Satheesh Babu AK, Petersen C, Iglesias-Carres L, Paz HA, Wankhade UD, Neilson AP, Anandh Babu PV. Blueberry intervention mitigates detrimental microbial metabolite trimethylamine N-oxide by modulating gut microbes. Biofactors 2024; 50:392-404. [PMID: 37921575 PMCID: PMC11014767 DOI: 10.1002/biof.2014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 09/15/2023] [Indexed: 11/04/2023]
Abstract
Gut microbes play a pivotal role in host physiology by producing beneficial or detrimental metabolites. Gut bacteria metabolize dietary choline and L-carnitine to trimethylamine (TMA) which is then converted to trimethylamine-N-oxide (TMAO). An elevated circulating TMAO is associated with diabetes, obesity, cardiovascular disease, and cancer in humans. In the present study, we investigated the effect of dietary blueberries and strawberries at a nutritional dosage on TMA/TMAO production and the possible role of gut microbes. Blueberry cohort mice received a control (C) or freeze-dried blueberry supplemented (CB) diet for 12 weeks and subgroups received an antibiotics cocktail (CA and CBA). Strawberry cohort mice received a control (N) or strawberry-supplemented (NS) diet and subgroups received antibiotics (NA and NSA). Metabolic parameters, choline, TMA, and TMAO were assessed in addition to microbial profiling and characterization of berry powders. Blueberry supplementation (equivalent to 1.5 human servings) reduced circulating TMAO in CB versus C mice (~48%) without changing choline or TMA. This effect was not mediated through alterations in metabolic parameters. Dietary strawberries did not reduce choline, TMA, or TMAO. Depleting gut microbes with antibiotics in these cohorts drastically reduced TMA and TMAO to not-quantified levels. Further, dietary blueberries increased the abundance of bacterial taxa that are negatively associated with circulating TMA/TMAO suggesting the role of gut microbes. Our phenolic profiling indicates that this effect could be due to chlorogenic acid and increased phenolic contents in blueberries. Our study provides evidence for considering dietary blueberries to reduce TMAO and prevent TMAO-induced complications.
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Affiliation(s)
| | - Chrissa Petersen
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
| | - Lisard Iglesias-Carres
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC 28081, USA
| | - Henry A. Paz
- Arkansas Children’s Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Umesh D. Wankhade
- Arkansas Children’s Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Andrew P. Neilson
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC 28081, USA
| | - Pon Velayutham Anandh Babu
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, Utah 84112, USA
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6
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Satheesh Babu AK, Petersen C, Paz HA, Iglesias-Carres L, Li Y, Zhong Y, Neilson AP, Wankhade UD, Anandh Babu PV. Gut Microbiota Depletion Using Antibiotics to Investigate Diet-Derived Microbial Metabolites: An Efficient Strategy. Mol Nutr Food Res 2024; 68:e2300386. [PMID: 38054624 DOI: 10.1002/mnfr.202300386] [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: 06/09/2023] [Revised: 09/07/2023] [Indexed: 12/07/2023]
Abstract
SCOPE Gut microbiota depletion using antibiotics in drinking water is a valuable tool to investigate the role of gut microbes and microbial metabolites in health and disease. However, there are challenges associated with this model. Animals avoid drinking water because of the antibiotic bitterness, which affects their metabolic health. The present study develops an efficient strategy to deplete gut microbes without affecting metabolic parameters. METHODS AND RESULTS Male C57BL/6J mice (7 weeks old) are fed a control (C) or high-fat (HF) diet. Subgroups of C and HF mice receive an antibiotic cocktail in drinking water (CA and HA). The antibiotic dosage is gradually increased so that the animals adapt to the taste of antibiotics. Metabolic parameters, gut microbiome, and microbial metabolites are assessed after 12 weeks treatment. Culture methods and 16s rRNA amplification confirm the depletion of gut microbes in antibiotic groups (CA and HA). Further, antibiotic treatment does not alter metabolic parameters (body weight, body fat, lean body mass, blood glucose, and glucose/insulin tolerance), whereas it suppresses the production of diet-derived microbial metabolites (trimethylamine and trimethylamine-N-oxide). CONCLUSION This strategy effectively depletes gut microbes and suppresses the production of microbial metabolites in mice without affecting their metabolic health.
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Affiliation(s)
| | - Chrissa Petersen
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT, 84112, USA
| | - Henry A Paz
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, 72205, AR, USA
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Lisard Iglesias-Carres
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC, 28081, USA
| | - Ying Li
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT, 84112, USA
| | - Ying Zhong
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, 72205, AR, USA
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Andrew P Neilson
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC, 28081, USA
| | - Umesh D Wankhade
- Arkansas Children's Nutrition Center, University of Arkansas for Medical Sciences, Little Rock, 72205, AR, USA
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR, 72205, USA
| | - Pon Velayutham Anandh Babu
- Department of Nutrition and Integrative Physiology, College of Health, University of Utah, Salt Lake City, UT, 84112, USA
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7
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Huang PH, Chen DQ, Chen YW, Shih MK, Lee BH, Tain YL, Hsieh CW, Hou CY. Evaluation of the Feasibility of In Vitro Metabolic Interruption of Trimethylamine with Resveratrol Butyrate Esters and Its Purified Monomers. Molecules 2024; 29:429. [PMID: 38257342 PMCID: PMC10820948 DOI: 10.3390/molecules29020429] [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: 11/30/2023] [Revised: 01/07/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024] Open
Abstract
Resveratrol (RSV), obtained from dietary sources, has been shown to reduce trimethylamine oxide (TMAO) levels in humans, and much research indicates that TMAO is recognized as a risk factor for cardiovascular disease. Therefore, this study investigated the effects of RSV and RSV-butyrate esters (RBE) on the proliferation of co-cultured bacteria and HepG2 cell lines, respectively, and also investigated the changes in trimethylamine (TMA) and TMOA content in the medium and flavin-containing monooxygenase-3 (FMO3) gene expression. This study revealed that 50 µg/mL of RBE could increase the population percentage of Bifidobacterium longum at a rate of 53%, while the rate was 48% for Clostridium asparagiforme. In contrast, co-cultivation of the two bacterial strains effectively reduced TMA levels from 561 ppm to 449 ppm. In addition, regarding TMA-induced HepG2 cell lines, treatment with 50 μM each of RBE, 3,4'-di-O-butanoylresveratrol (ED2), and 3-O-butanoylresveratrol (ED4) significantly reduced FMO3 gene expression from 2.13 to 0.40-1.40, which would also contribute to the reduction of TMAO content. This study demonstrated the potential of RBE, ED2, and ED4 for regulating TMA metabolism in microbial co-cultures and cell line cultures, which also suggests that the resveratrol derivative might be a daily dietary supplement that will be beneficial for health promotion in the future.
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Affiliation(s)
- Ping-Hsiu Huang
- School of Food, Jiangsu Food and Pharmaceutical Science College, No. 4, Meicheng Road, Higher Education Park, Huai’an 223003, China;
| | - De-Quan Chen
- Department of Seafood Science, College of Hydrosphere, National Kaohsiung, University of Science and Technology, Kaohsiung 81157, Taiwan;
| | - Yu-Wei Chen
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan; (Y.-W.C.); (C.-W.H.)
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan;
| | - Ming-Kuei Shih
- Graduate Institute of Food Culture and Innovation, National Kaohsiung University of Hospitality and Tourism, Kaohsiung 812301, Taiwan;
| | - Bao-Hong Lee
- Department of Horticulture, National Chiayi University, Chiayi 60004, Taiwan;
| | - You-Lin Tain
- Department of Pediatrics, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan;
- Institute for Translational Research in Biomedicine, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 83301, Taiwan
- College of Medicine, Chang Gung University, Taoyuan 33305, Taiwan
| | - Chang-Wei Hsieh
- Department of Food Science and Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan; (Y.-W.C.); (C.-W.H.)
- Department of Medical Research, China Medical University Hospital, Taichung 40447, Taiwan
| | - Chih-Yao Hou
- Department of Seafood Science, College of Hydrosphere, National Kaohsiung, University of Science and Technology, Kaohsiung 81157, Taiwan;
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8
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Russell MW, Muste JC, Kuo BL, Wu AK, Singh RP. Clinical trials targeting the gut-microbiome to effect ocular health: a systematic review. Eye (Lond) 2023; 37:2877-2885. [PMID: 36918627 PMCID: PMC10516887 DOI: 10.1038/s41433-023-02462-7] [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: 03/25/2022] [Revised: 11/21/2022] [Accepted: 02/21/2023] [Indexed: 03/16/2023] Open
Abstract
Clinical trials targeting the gut microbiome to mitigate ocular disease are now on the horizon. A review of clinical data thus far is essential to determine future directions in this novel promising field. This review examines recent clinical trials that support the plausibility of a gut-eye axis, and may form the basis of novel clinical interventions. PubMed was queried for English language clinical studies examining the relationships between gut microbiota and ocular pathology. 25 studies were extracted from 828 candidate publications, which suggest that gut imbalance is associated with ocular pathology. Of these, only four interventional studies exist which suggest probiotic supplementation or fecal microbiota transplant can reduce symptoms of chalazion or uveitis. The gut-eye axis appears to hold clinical relevance, but current data is limited in sample size and design. Further investigation via longitudinal clinical trials may be warranted.
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Affiliation(s)
- Matthew W Russell
- Center for Ophthalmic Bioinformatics, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
- Cleveland Clinic Lerner College of Medicine, Cleveland, OH, USA
| | - Justin C Muste
- Center for Ophthalmic Bioinformatics, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Blanche L Kuo
- Center for Ophthalmic Bioinformatics, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Anna K Wu
- Center for Ophthalmic Bioinformatics, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA
- Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Rishi P Singh
- Center for Ophthalmic Bioinformatics, Cole Eye Institute, Cleveland Clinic, Cleveland, OH, USA.
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Iglesias-Carres L, Chadwick-Corbin SA, Sweet MG, Neilson AP. Dietary phenolics and their microbial metabolites are poor inhibitors of trimethylamine oxidation to trimethylamine N-oxide by hepatic flavin monooxygenase 3. J Nutr Biochem 2023; 120:109428. [PMID: 37549832 DOI: 10.1016/j.jnutbio.2023.109428] [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: 04/24/2023] [Revised: 07/11/2023] [Accepted: 08/02/2023] [Indexed: 08/09/2023]
Abstract
High circulating levels of trimethylamine N-oxide (TMAO) have been associated with cardiovascular disease risk. TMAO is formed through a microbiome-host pathway utilizing primarily dietary choline as a substrate. Specific gut microbiota transform choline into trimethylamine (TMA), and, when absorbed, host hepatic flavin-containing monooxygenase 3 (FMO3) oxidizes TMA into TMAO. Chlorogenic acid and its metabolites reduce microbial TMA production in vitro. However, little is known regarding the potential for chlorogenic acid and its bioavailable metabolites to inhibit the last step: hepatic conversion of TMA to TMAO. We developed a screening methodology to study FMO3-catalyzed production of TMAO from TMA. HepG2 cells were unable to oxidize TMA into TMAO due to their lack of FMO3 expression. Although Hepa-1 cells did express FMO3 when pretreated with TMA and NADPH, they lacked enzymatic activity to produce TMAO. Rat hepatic microsomes contained active FMO3. Optimal reaction conditions were: 50 µM TMA, 0.2 mM NADPH, and 33 µL microsomes/mL reaction. Methimazole (a known FMO3 competitive substrate) at 200 µM effectively reduced FMO3-catalyzed conversion of TMA to TMAO. However, bioavailable chlorogenic acid metabolites did not generally inhibit FMO3 at physiological (1 µM) nor supra-physiological (50 µM) doses. Thus, the effects of chlorogenic acid in regulating TMAO levels in vivo are unlikely to occur through direct FMO3 enzyme inhibition. Potential effects on FMO3 expression remain unknown. Intestinal inhibition of TMA production and/or absorption are thus likely their primary mechanisms of action.
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Affiliation(s)
- Lisard Iglesias-Carres
- Plants for Human Health Institute, North Carolina State University, Kannapolis, North Carolina, USA
| | - Sydney A Chadwick-Corbin
- Plants for Human Health Institute, North Carolina State University, Kannapolis, North Carolina, USA
| | - Michael G Sweet
- Plants for Human Health Institute, North Carolina State University, Kannapolis, North Carolina, USA
| | - Andrew P Neilson
- Plants for Human Health Institute, North Carolina State University, Kannapolis, North Carolina, USA; Department of Food, Bioprocessing, and Nutrition Sciences, North Carolina State University, Raleigh, North Carolina, USA.
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10
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Peña-Jorquera H, Cid-Jofré V, Landaeta-Díaz L, Petermann-Rocha F, Martorell M, Zbinden-Foncea H, Ferrari G, Jorquera-Aguilera C, Cristi-Montero C. Plant-Based Nutrition: Exploring Health Benefits for Atherosclerosis, Chronic Diseases, and Metabolic Syndrome-A Comprehensive Review. Nutrients 2023; 15:3244. [PMID: 37513660 PMCID: PMC10386413 DOI: 10.3390/nu15143244] [Citation(s) in RCA: 23] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 07/14/2023] [Accepted: 07/15/2023] [Indexed: 07/30/2023] Open
Abstract
Atherosclerosis, chronic non-communicable diseases, and metabolic syndrome are highly interconnected and collectively contribute to global health concerns that reduce life expectancy and quality of life. These conditions arise from multiple risk factors, including inflammation, insulin resistance, impaired blood lipid profile, endothelial dysfunction, and increased cardiovascular risk. Adopting a plant-based diet has gained popularity as a viable alternative to promote health and mitigate the incidence of, and risk factors associated with, these three health conditions. Understanding the potential benefits of a plant-based diet for human health is crucial, particularly in the face of the rising prevalence of chronic diseases like diabetes, hypertension, dyslipidemia, atherosclerosis, and cancer. Thus, this review focused on the plausible advantages of consuming a type of food pattern for the prevention and/or treatment of chronic diseases, emphasizing the dietary aspects that contribute to these conditions and the evidence supporting the benefits of a plant-based diet for human health. To facilitate a more in-depth analysis, we present separate evidence for each of these three concepts, acknowledging their intrinsic connection while providing a specific focus on each one. This review underscores the potential of a plant-based diet to target the underlying causes of these chronic diseases and enhance health outcomes for individuals and populations.
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Affiliation(s)
- Humberto Peña-Jorquera
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Viña del Mar 2530388, Chile
| | - Valeska Cid-Jofré
- Centro de Investigación Biomédica y Aplicada (CIBAP), Escuela de Medicina, Facultad de Ciencias Médicas, Universidad de Santiago de Chile (USACH), Santiago 9160019, Chile
| | - Leslie Landaeta-Díaz
- Facultad de Salud y Ciencias Sociales, Universidad de las Américas, Santiago 7500975, Chile
- Núcleo en Ciencias Ambientales y Alimentarias, Universidad de las Américas, Santiago 7500975, Chile
| | - Fanny Petermann-Rocha
- Centro de Investigación Biomédica, Facultad de Medicina, Universidad Diego Portales, Santiago 8370068, Chile
- BHF Glasgow Cardiovascular Research Centre, School of Cardiovascular and Metabolic Health, University of Glasgow, Glasgow G12 8TA, UK
| | - Miquel Martorell
- Department of Nutrition and Dietetics, Faculty of Pharmacy, Centre for Healthy Living, University of Concepción, Concepción 4070386, Chile
| | - Hermann Zbinden-Foncea
- Laboratorio de Fisiología del Ejercicio y Metabolismo, Escuela de Kinesiología, Facultad de Medicina, Universidad Finis Terrae, Santiago 7500000, Chile
- Facultad de Ciencias de la Salud, Universidad Francisco de Vitoria, 28223 Madrid, Spain
| | - Gerson Ferrari
- Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Av. Pedro de Valdivia 425, Providencia 7500912, Chile
- Escuela de Ciencias de la Actividad Física, el Deporte y la Salud, Universidad de Santiago de Chile (USACH), Santiago 9170022, Chile
| | - Carlos Jorquera-Aguilera
- Escuela de Nutrición y Dietética, Facultad de Ciencias, Universidad Mayor, Santiago 8580745, Chile
| | - Carlos Cristi-Montero
- IRyS Group, Physical Education School, Pontificia Universidad Católica de Valparaíso, Viña del Mar 2530388, Chile
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11
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Krueger ES, Griffin LE, Beales JL, Lloyd TS, Brown NJ, Elison WS, Kay CD, Neilson AP, Tessem JS. Bioavailable Microbial Metabolites of Flavanols Demonstrate Highly Individualized Bioactivity on In Vitro β-Cell Functions Critical for Metabolic Health. Metabolites 2023; 13:801. [PMID: 37512508 PMCID: PMC10385630 DOI: 10.3390/metabo13070801] [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: 06/07/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/30/2023] Open
Abstract
Dietary flavanols are known for disease preventative properties but are often poorly absorbed. Gut microbiome flavanol metabolites are more bioavailable and may exert protective activities. Using metabolite mixtures extracted from the urine of rats supplemented with flavanols and treated with or without antibiotics, we investigated their effects on INS-1 832/13 β-cell glucose stimulated insulin secretion (GSIS) capacity. We measured insulin secretion under non-stimulatory (low) and stimulatory (high) glucose levels, insulin secretion fold induction, and total insulin content. We conducted treatment-level comparisons, individual-level dose responses, and a responder vs. non-responder predictive analysis of metabolite composition. While the first two analyses did not elucidate treatment effects, metabolites from 9 of the 28 animals demonstrated significant dose responses, regardless of treatment. Differentiation of responders vs. non-responder revealed that levels of native flavanols and valerolactones approached significance for predicting enhanced GSIS, regardless of treatment. Although treatment-level patterns were not discernable, we conclude that the high inter-individual variability shows that metabolite bioactivity on GSIS capacity is less related to flavanol supplementation or antibiotic treatment and may be more associated with the unique microbiome or metabolome of each animal. These findings suggest flavanol metabolite activities are individualized and point to the need for personalized nutrition practices.
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Affiliation(s)
- Emily S. Krueger
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, Provo, UT 84602, USA; (E.S.K.); (J.L.B.); (T.S.L.); (N.J.B.); (W.S.E.)
| | - Laura E. Griffin
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC 28081, USA; (L.E.G.); (C.D.K.); (A.P.N.)
| | - Joseph L. Beales
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, Provo, UT 84602, USA; (E.S.K.); (J.L.B.); (T.S.L.); (N.J.B.); (W.S.E.)
| | - Trevor S. Lloyd
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, Provo, UT 84602, USA; (E.S.K.); (J.L.B.); (T.S.L.); (N.J.B.); (W.S.E.)
| | - Nathan J. Brown
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, Provo, UT 84602, USA; (E.S.K.); (J.L.B.); (T.S.L.); (N.J.B.); (W.S.E.)
| | - Weston S. Elison
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, Provo, UT 84602, USA; (E.S.K.); (J.L.B.); (T.S.L.); (N.J.B.); (W.S.E.)
| | - Colin D. Kay
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC 28081, USA; (L.E.G.); (C.D.K.); (A.P.N.)
| | - Andrew P. Neilson
- Plants for Human Health Institute, Department of Food, Bioprocessing and Nutrition Sciences, North Carolina State University, Kannapolis, NC 28081, USA; (L.E.G.); (C.D.K.); (A.P.N.)
| | - Jeffery S. Tessem
- Department of Nutrition, Dietetics, and Food Science, Brigham Young University, Provo, UT 84602, USA; (E.S.K.); (J.L.B.); (T.S.L.); (N.J.B.); (W.S.E.)
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12
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Khodabakhshi A, Monfared V, Arabpour Z, Vahid F, Hasani M. Association between Levels of Trimethylamine N-Oxide and Cancer: A Systematic Review and Meta-Analysis. Nutr Cancer 2023; 75:402-414. [PMID: 36217110 DOI: 10.1080/01635581.2022.2129080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Cancer is the second leading cause of death in the world. Reports on the effect of Trimethylamine-N-oxide (TAMO), a small amine oxide generated by gut microbial metabolism of choline, betaine, and carnitine, on cancer are inconsistent. Therefore, this systematic review and meta-analysis summarize the effect of TAMO on cancer incidence. A systematic search was conducted in PubMed, Scopus, Web of Science, and Embase. Data were pooled using the random-effects method and were expressed as weighted mean difference (WMD) and 95% confidence intervals (CI). The pooled results of 16 studies, including 5930 participants, showed that the association between TMAO levels and cancer incidence is insignificant (Odds Ratio: 0.97, 95% CI: (0.64, 1.46), P-value = 0.871). Subgroup analysis showed that urinary TMAO levels were negatively associated with cancer incidence; in contrast, a direct and positive association was observed between serum TMAO levels and cancer incidence. However, "gender" and the "TMAO measuring method" were the potential sources of discrepancies. Meta-regression analysis did not reveal any significant association between duration of studies, age, female ratio, subjects-control, and subjects-case. The present study demonstrates that serum TAMO levels were insignificantly associated with cancer incidence.
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Affiliation(s)
- Adeleh Khodabakhshi
- Student Research Committee, Kerman University of Medical Sciences, Kerman, Iran.,Physiology Research center, Institute of Neuropharmacology, and Department of Nutrition, Faculty of Public Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Vahid Monfared
- Student Research Committee, Semnan University of Medical Sciences, Semnan, Iran
| | - Zahra Arabpour
- Department of Nutrition, School of Health, Kerman University of Medical Sciences, Kerman, Iran
| | - Farhad Vahid
- Nutrition and Health Research Group, Department of Precision Health, Luxembourg Institute of Health, Strassen, Luxembourg
| | - Motahareh Hasani
- Department of Nutrition, School of Health, Golestan University of Medical Sciences, Gorgan, Iran
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13
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Perler BK, Friedman ES, Wu GD. The Role of the Gut Microbiota in the Relationship Between Diet and Human Health. Annu Rev Physiol 2023; 85:449-468. [PMID: 36375468 DOI: 10.1146/annurev-physiol-031522-092054] [Citation(s) in RCA: 64] [Impact Index Per Article: 64.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
The interplay between diet, the gut microbiome, and host health is complex. Diets associated with health have many similarities: high fiber, unsaturated fatty acids, and polyphenols while being low in saturated fats, sodium, and refined carbohydrates. Over the past several decades, dietary patterns have changed significantly in Westernized nations with the increased consumption of calorically dense ultraprocessed foods low in fiber and high in saturated fats, salt, and refined carbohydrates, leading to numerous negative health consequences including obesity, metabolic syndrome, and cardiovascular disease. The gut microbiota is an environmental factor that interacts with diet and may also have an impact on health outcomes, many of which involve metabolites produced by the microbiota from dietary components that can impact the host. This review focuses on our current understanding of the complex relationship between diet, the gut microbiota, and host health, with examples of how diet can support health, increase an individual's risk for disease, and be used as a therapy for specific diseases.
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Affiliation(s)
- Bryce K Perler
- Division of Gastroenterology and Hepatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA;
| | - Elliot S Friedman
- Division of Gastroenterology and Hepatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA;
| | - Gary D Wu
- Division of Gastroenterology and Hepatology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA;
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14
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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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15
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Kyaw TS, Sukmak M, Nahok K, Sharma A, Silsirivanit A, Lert-Itthiporn W, Sansurin N, Senthong V, Anutrakulchai S, Sangkhamanon S, Pinlaor S, Selmi C, Hammock BD, Cha'on U. Monosodium glutamate consumption reduces the renal excretion of trimethylamine N-oxide and the abundance of Akkermansia muciniphila in the gut. Biochem Biophys Res Commun 2022; 630:158-166. [PMID: 36155062 PMCID: PMC9851609 DOI: 10.1016/j.bbrc.2022.09.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 09/09/2022] [Indexed: 01/21/2023]
Abstract
We previously demonstrated that monosodium glutamate (MSG) consumption increases trimethylamine (TMA) level in the renal tissue as well as dimethylamine and methylamine levels in urine of rats, suggesting the effects of MSG on humans. To better define the findings, we investigated whether MSG consumption alters serum trimethylamine N-oxide (TMAO) level, and as a consequence, induces kidney injury in the rat model. Adult male Wistar rats (n = 40) were randomized to be fed with a standard diet (control group) or a standard diet with 0.5, 1.5 or 3.0 g% MSG corresponding to 7, 21, or 42 g/day in 60 kg man, respectively in drinking water (MSG-treated groups), or a standard diet with 3.0 g% MSG in drinking water which was withdrawn after 4 weeks (MSG-withdrawal group). Blood and urine samples were collected to analyze the TMAO levels using 1H NMR and markers of kidney injury. Fecal samples were also collected for gut microbiota analysis. We found serum TMAO levels increased and urinary TMAO excretion decreased during MSG consumption, in parallel with the increase of the neutrophil gelatinase-associated lipocalin (NGAL) excretion which subsided with the withdrawal of MSG. The fecal 16 S rRNA analysis during MSG consumption showed gut microbiota changes with a consistent suppression of Akkermansia muciniphila, a mucin producing bacteria, but not of TMA-producing bacteria. In conclusions, our findings suggested that prolonged high dose MSG consumption may cause TMAO accumulation in the blood via reduction of renal excretion associated with acute kidney injury. The mechanisms by which MSG reduced TMAO excretion require further investigation.
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Affiliation(s)
- Thin Su Kyaw
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET), Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Manatsaphon Sukmak
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET), Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Kanokwan Nahok
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET), Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Amod Sharma
- Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET), Khon Kaen University, Khon Kaen, 40002, Thailand
| | - Atit Silsirivanit
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Worachart Lert-Itthiporn
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Nichapa Sansurin
- Northeast Laboratory Animal Center, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Vichai Senthong
- Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Sirirat Anutrakulchai
- Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET), Khon Kaen University, Khon Kaen, 40002, Thailand; Department of Internal Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Sakkarn Sangkhamanon
- Department of Pathology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Somchai Pinlaor
- Department of Parasitology, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand.
| | - Carlo Selmi
- Rheumatology and Clinical Immunology, Humanitas Clinical and Research Center IRCCS, Rozzano, 20089, Milan, Italy; Department of Clinical Biosciences, Humanitas University, Pieve Emanuele, 20090, Milan, Italy.
| | - Bruce D Hammock
- Department of Entomology & Nematology and the UC Davis Comprehensive Cancer Research Center, University of California, Davis, CA, 95616, USA
| | - Ubon Cha'on
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, 40002, Thailand; Chronic Kidney Disease Prevention in the Northeast of Thailand (CKDNET), Khon Kaen University, Khon Kaen, 40002, Thailand.
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16
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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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17
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Crimarco A, Landry MJ, Carter MM, Gardner CD. Assessing the effects of alternative plant-based meats v. animal meats on biomarkers of inflammation: a secondary analysis of the SWAP-MEAT randomized crossover trial. J Nutr Sci 2022; 11:e82. [PMID: 36304815 PMCID: PMC9554424 DOI: 10.1017/jns.2022.84] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2022] [Revised: 08/29/2022] [Accepted: 08/30/2022] [Indexed: 12/14/2022] Open
Abstract
Alternative plant-based meats have grown in popularity with consumers recently and researchers are examining the potential health effects, or risks, from consuming these products. Because there have been no studies to date that have specifically assessed the health effects of plant-based meats on biomarkers of inflammation, the purpose of this work was to conduct a secondary analysis of the Study With Appetizing Plantfood - Meat Eating Alternatives Trial (SWAP-MEAT). SWAP-MEAT was a randomised crossover trial that involved generally healthy adults eating 2 or more servings of plant-based meats per day for 8 weeks (i.e. Plant phase) followed by 2 or more servings of animal meats per day for 8 weeks (i.e. Animal phase). Results of linear mixed-effects models indicated only 4 out of 92 biomarkers reached statistical significance. The results were contrary to our hypothesis, since we expected relative improvements in biomarkers of inflammation from the plant-based meats.
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Affiliation(s)
- Anthony Crimarco
- Stanford Prevention Research Center, Stanford School of Medicine, Stanford, CA, USA
| | - Matthew J. Landry
- Stanford Prevention Research Center, Stanford School of Medicine, Stanford, CA, USA
| | - Matthew M. Carter
- Microbiology and Immunology, Stanford School of Medicine, Stanford, CA, USA
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18
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Lei C, Gong D, Zhuang B, Zhang Z. Alterations in the gastric microbiota and metabolites in gastric cancer: An update review. Front Oncol 2022; 12:960281. [PMID: 36081564 PMCID: PMC9445122 DOI: 10.3389/fonc.2022.960281] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Accepted: 07/29/2022] [Indexed: 11/23/2022] Open
Abstract
Gastric cancer (GC) is one of the leading causes of cancer mortality worldwide. Numerous studies have shown that the gastric microbiota can contribute to the occurrence and development of GC by generating harmful microbial metabolites, suggesting the possibility of discovering biomarkers. Metabolomics has emerged as an advanced promising analytical method for the analysis of microbiota-derived metabolites, which have greatly accelerated our understanding of host-microbiota metabolic interactions in GC. In this review, we briefly compiled recent research progress on the changes of gastric microbiota and its metabolites associated with GC. And we further explored the application of metabolomics and gastric microbiome association analysis in the diagnosis, prevention and treatment of GC.
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19
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Martínez-Montoro JI, Martínez-Sánchez MA, Balaguer-Román A, Gil-Martínez J, Mesa-López MJ, Egea-Valenzuela J, Ruiz-Alcaraz AJ, Queipo-Ortuño MI, Ferrer M, Fernández-García JC, Ramos-Molina B. Dietary modulation of gut microbiota in patients with colorectal cancer undergoing surgery: A review. Int J Surg 2022; 104:106751. [PMID: 35803517 DOI: 10.1016/j.ijsu.2022.106751] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 06/19/2022] [Accepted: 06/20/2022] [Indexed: 11/16/2022]
Abstract
Colorectal cancer (CRC) is the third most frequent malignancy and the second cause of cancer death worldwide. Several factors have been postulated to be involved in CRC pathophysiology, including physical inactivity, unhealthy dietary habits, obesity, and the gut microbiota. Emerging data suggest that the microbiome may play a key role in CRC prognosis and derived complications in patients undergoing colorectal surgery. On the other hand, dietary intervention has been demonstrated to be able to induce significant changes in the gut microbiota and related metabolites in different conditions; therefore, the manipulation of gut microbiota through dietary intervention may constitute a useful approach to improve perioperative dysbiosis and post-surgical outcomes in patients with CRC. In this article, we review the role of the gut microbiota in CRC surgery complications and the potential therapeutic modulation of gut microbiome through nutritional intervention in patients with CRC undergoing surgery.
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Affiliation(s)
- José Ignacio Martínez-Montoro
- Department of Endocrinology and Nutrition, Virgen de la Victoria University Hospital, Instituto de Investigacion Biomedica de Malaga (IBIMA), Faculty of Medicine, University of Malaga, Malaga, Spain
| | | | - Andrés Balaguer-Román
- Obesity and Metabolism Laboratory, Biomedical Research Institute of Murcia (IMIB), Murcia, Spain; Department of General and Digestive System Surgery, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | - José Gil-Martínez
- Department of General and Digestive System Surgery, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | - María José Mesa-López
- Department of Digestive Diseases- Unit of Gastrointestinal Endoscopy, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | - Juan Egea-Valenzuela
- Department of Digestive Diseases- Unit of Gastrointestinal Endoscopy, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | - Antonio José Ruiz-Alcaraz
- Department of Biochemistry, Molecular Biology B and Immunology, Faculty of Medicine, University of Murcia, Murcia, Spain
| | - María Isabel Queipo-Ortuño
- Department of Medical Oncology, Virgen de la Victoria and Regional University Hospitals-IBIMA, UMA-CIMES, Malaga, Spain
| | - Mercedes Ferrer
- Obesity and Metabolism Laboratory, Biomedical Research Institute of Murcia (IMIB), Murcia, Spain; Department of Endocrinology and Nutrition, Virgen de la Arrixaca University Hospital, Murcia, Spain
| | - José Carlos Fernández-García
- Department of Endocrinology and Nutrition, Regional University Hospital of Malaga, Instituto de Investigacion Biomedica de Malaga (IBIMA), Faculty of Medicine, University of Malaga, Malaga, Spain.
| | - Bruno Ramos-Molina
- Obesity and Metabolism Laboratory, Biomedical Research Institute of Murcia (IMIB), Murcia, Spain.
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20
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Jing L, Zhang H, Xiang Q, Shen L, Guo X, Zhai C, Hu H. Targeting Trimethylamine N-Oxide: A New Therapeutic Strategy for Alleviating Atherosclerosis. Front Cardiovasc Med 2022; 9:864600. [PMID: 35770223 PMCID: PMC9235870 DOI: 10.3389/fcvm.2022.864600] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 05/16/2022] [Indexed: 11/13/2022] Open
Abstract
Atherosclerosis (AS) is one of the most common cardiovascular diseases (CVDs), and there is currently no effective drug to reverse its pathogenesis. Trimethylamine N-oxide (TMAO) is a metabolite of the gut flora with the potential to act as a new risk factor for CVD. Many studies have shown that TMAO is involved in the occurrence and development of atherosclerotic diseases through various mechanisms; however, the targeted therapy for TMAO remains controversial. This article summarizes the vital progress made in relation to evaluations on TMAO and AS in recent years and highlights novel probable approaches for the prevention and treatment of AS.
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Affiliation(s)
- Lele Jing
- Department of Cardiology, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Honghong Zhang
- School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Qiannan Xiang
- School of Clinical Medicine, Zhejiang Chinese Medical University, Hangzhou, China
| | - Liang Shen
- Department of Cardiology, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Xiaoxia Guo
- Department of Cardiology, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Changlin Zhai
- Department of Cardiology, The Affiliated Hospital of Jiaxing University, Jiaxing, China
| | - Huilin Hu
- Department of Cardiology, The Affiliated Hospital of Jiaxing University, Jiaxing, China
- *Correspondence: Huilin Hu
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21
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McGrattan A, Stewart CJ, Cassidy A, Woodside JV, McEvoy CT. Diet Patterns, the Gut Microbiome, and Alzheimer's Disease. J Alzheimers Dis 2022; 88:933-941. [PMID: 35634849 DOI: 10.3233/jad-220205] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Given the complex bidirectional communication system that exists between the gut microbiome and the brain, there is growing interest in the gut microbiome as a novel and potentially modifiable risk factor for Alzheimer's disease (AD). Gut dysbiosis has been implicated in the pathogenesis and progression of AD by initiating and prolonging neuroinflammatory processes. The metabolites of gut microbiota appear to be critical in the mechanism of the gut-brain axis. Gut microbiota metabolites, such as trimethylamine-n-oxide, lipopolysaccharide, and short chain fatty acids, are suggested to mediate systemic inflammation and intracerebral amyloidosis via endothelial dysfunction. Emerging data suggest that the fungal microbiota (mycobiome) may also influence AD pathology. Importantly, 60% of variation in the gut microbiome is attributable to diet, therefore modulating the gut microbiome through dietary means could be an effective approach to reduce AD risk. Given that people do not eat isolated nutrients and instead consume a diverse range of foods and combinations of nutrients that are likely to be interactive, studying the effects of whole diets provides the opportunity to account for the interactions between different nutrients. Thus, dietary patterns may be more predictive of real-life effect on gut microbiome and AD risk than foods or nutrients in isolation. Accumulating evidence from experimental and animal studies also show potential effects of gut microbiome on AD pathogenesis. However, data from human dietary interventions are lacking. Well-designed intervention studies are needed in diverse populations to determine the influence of diet on gut microbiome and inform the development of effective dietary strategies for prevention of AD.
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Affiliation(s)
- Andrea McGrattan
- School of Biomedical, Nutritional and Sport Sciences, Newcastle University, UK
| | | | - Aedín Cassidy
- Institute For Global Food Security, Queen's University Belfast, UK
| | - Jayne V Woodside
- Institute For Global Food Security, Queen's University Belfast, UK
| | - Claire T McEvoy
- Institute For Global Food Security, Queen's University Belfast, UK.,Global Brain Health Institute, University of California San Francisco, USA and Trinity College Dublin, Ireland
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22
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Kimble R, Gouinguenet P, Ashor A, Stewart C, Deighton K, Matu J, Griffiths A, Malcomson FC, Joel A, Houghton D, Stevenson E, Minihane AM, Siervo M, Shannon OM, Mathers JC. Effects of a mediterranean diet on the gut microbiota and microbial metabolites: A systematic review of randomized controlled trials and observational studies. Crit Rev Food Sci Nutr 2022; 63:8698-8719. [PMID: 35361035 DOI: 10.1080/10408398.2022.2057416] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Consumption of the Mediterranean dietary pattern (MedDiet) is associated with reduced risk of numerous non-communicable diseases. Modulation of the composition and metabolism of the gut microbiota represents a potential mechanism through which the MedDiet elicits these effects. We conducted a systematic literature search (Prospero registration: CRD42020168977) using PubMed, The Cochrane Library, MEDLINE, SPORTDiscuss, Scopus and CINAHL databases for randomized controlled trials (RCTs) and observational studies exploring the impact of a MedDiet on gut microbiota composition (i.e., relative abundance of bacteria or diversity metrics) and metabolites (e.g., short chain fatty acids). Seventeen RCTs and 17 observational studies were eligible for inclusion in this review. Risk of bias across the studies was mixed but mainly identified as low and unclear. Overall, RCTs and observational studies provided no clear evidence of a consistent effect of a MedDiet on composition or metabolism of the gut microbiota. These findings may be related to the diverse methods across studies (e.g., MedDiet classification and analytical techniques), cohort characteristics, and variable quality of studies. Further, well-designed studies are warranted to advance understanding of the potential effects of the MedDiet using more detailed examination of microbiota and microbial metabolites with reference to emerging characteristics of a healthy gut microbiome.
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Affiliation(s)
- Rachel Kimble
- Human Nutrition Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Phebee Gouinguenet
- Human Nutrition Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
- Nutrition & Food Sciences, University of Bordeaux, Bordeaux, France
| | - Ammar Ashor
- Department of Pharmacology, College of Medicine, Al-Mustansiriyah University, Baghdad, Iraq
| | - Christopher Stewart
- Clinical and Translational Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | | | - Jamie Matu
- School of Clinical Applied Sciences, Leeds Beckett University, Leeds, UK
| | - Alex Griffiths
- Institute for Sport, Physical Activity & Leisure, Leeds Beckett University, Leeds, UK
| | - Fiona C Malcomson
- Human Nutrition Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Abraham Joel
- Human Nutrition Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - David Houghton
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Emma Stevenson
- Human Nutrition Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Anne Marie Minihane
- Department of Nutrition and Preventive Medicine, Norwich Medical School, University of East Anglia (UEA), Norwich, UK
| | - Mario Siervo
- School of Life Sciences, The University of Nottingham Medical School, Queen's Medical Centre, Nottingham, UK
| | - Oliver M Shannon
- Human Nutrition Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
| | - John C Mathers
- Human Nutrition Research Centre, Centre for Healthier Lives, Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK
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The Influence of Animal- or Plant-Based Diets on Blood and Urine Trimethylamine-N-Oxide (TMAO) Levels in Humans. Curr Nutr Rep 2022; 11:56-68. [PMID: 34990005 DOI: 10.1007/s13668-021-00387-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2021] [Indexed: 10/19/2022]
Abstract
PURPOSE OF REVIEW The aim of the review was to evaluate which diets are associated with higher TMAO levels. RECENT FINDINGS Several studies have shown that plasma and urinary levels of trimethylamine N-oxide (TMAO) are a reliable indicator of cardiovascular disease risk. Diet certainly has a strong influence on TMAO levels, but there is still uncertainty about which diet is the most effective in reducing this risk factor. PubMed, Web of Science and Scopus were searched for studies that were published up until July 1, 2021 using specific keywords. In total, 447 studies were evaluated, of which papers on individual foods or supplements, or conducted in children, in vitro or in animal model studies were excluded. Twenty-five studies were included in this review. Three studies showed that caloric restriction and (visceral) weight loss improve TMAO levels. Six out of eight studies revealed beneficial effects of plant-based diets on plasma or urinary TMAO concentrations. Most of the studies demonstrated that a diet high in protein, particularly of animal origin, such as diets rich in fish or red meat, have negative effects on TMAO levels. Most studies that have evaluated the relationship between diet and plasma or urinary concentrations of TMAO seem to indicate that plant-based diets (Mediterranean, vegetarian and vegan) are effective in improving TMAO levels, while animal-based diets appear to have the opposite effect. Further long-term studies are needed to assess whether vegetarian or vegan diets are more effective than the Mediterranean diet in reducing TMAO levels.
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Yu N, Gu N, Wang Y, Zhou B, Lu D, Li J, Ma X, Zhang J, Guo X. The Association of Plasma Trimethylamine N-Oxide with Coronary Atherosclerotic Burden in Patients with Type 2 Diabetes Among a Chinese North Population. Diabetes Metab Syndr Obes 2022; 15:69-78. [PMID: 35035225 PMCID: PMC8754460 DOI: 10.2147/dmso.s339698] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 12/22/2021] [Indexed: 12/13/2022] Open
Abstract
PURPOSE We aimed to examine the association between plasma trimethylamine N-oxide (TMAO), a gut microbial metabolite from dietary phosphatidylcholine, and coronary atherosclerotic burden in patients with type 2 diabetes (T2D). METHODS In total, 349 patients with T2D were studied, including 70 controls and 279 patients with coronary artery disease (CAD) by coronary angiography. Coronary atherosclerotic burden is quantified by the number of diseased coronary branches and SYNTAX (Synergy between PCI with Taxus and Cardiac Surgery) score. Plasma TMAO levels were determined by UHPLC-MS/MS technique. RESULTS The TMAO concentration was significantly higher in the patients with triple vessel disease (TVD) (3.33 [IQR: 1.81-6.65] μM) than those without TVD (2.62 [IQR: 1.50-4.73] μM) (P = 0.015). A similar difference was found between patients with SYNTAX score >22 (3.93 [IQR: 1.81-6.82] μM) and those with SYNTAX score ≤22 (2.54 [IQR: 1.44-4.54] μM) (P = 0.014). TMAO was not significantly correlated with the presence of CAD. Among patients with eGFR <60 mL/min/1.73 m2, the highest tertile of TMAO was significantly associated with TVD (OR = 25.28, 95% CI [2.55-250.33], P = 0.006) and SYNTAX score >22 (OR = 7.23, 95% CI [1.51-34.64], P = 0.013) independent of known risk factors of CAD, compared with lower TMAO tertiles. CONCLUSION TMAO was not independently correlated with the presence of CAD and severity of coronary atherosclerosis in the included population. Nevertheless, the significant association between circulating TMAO and higher coronary atherosclerotic burden was observed in patients with eGFR of lower than 60 mL/min/1.73 m2.
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Affiliation(s)
- Na Yu
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
| | - Nan Gu
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
| | - Yuxin Wang
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
| | - Bin Zhou
- Department of Cardiology, Fuwai Hospital, National Centre for Cardiovascular Diseases, National Clinical Research Center of Cardiovascular Diseases, State Key Laboratory of Cardiovascular Disease, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100037, People’s Republic of China
| | - Difei Lu
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
| | - Jianping Li
- Department of Cardiology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
| | - Xiaowei Ma
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
- Correspondence: Xiaowei Ma Department of Endocrinology, Peking University First Hospital, Beijing, People’s Republic of ChinaTel/Fax +86-010-83572574 Email
| | - Junqing Zhang
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
| | - Xiaohui Guo
- Department of Endocrinology, Peking University First Hospital, Beijing, 100034, People’s Republic of China
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Gut Metabolite Trimethylamine N-Oxide Protects INS-1 β-Cell and Rat Islet Function under Diabetic Glucolipotoxic Conditions. Biomolecules 2021; 11:biom11121892. [PMID: 34944536 PMCID: PMC8699500 DOI: 10.3390/biom11121892] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 12/11/2021] [Accepted: 12/14/2021] [Indexed: 12/14/2022] Open
Abstract
Serum accumulation of the gut microbial metabolite trimethylamine N-oxide (TMAO) is associated with high caloric intake and type 2 diabetes (T2D). Impaired pancreatic β-cell function is a hallmark of diet-induced T2D, which is linked to hyperglycemia and hyperlipidemia. While TMAO production via the gut microbiome-liver axis is well defined, its molecular effects on metabolic tissues are unclear, since studies in various tissues show deleterious and beneficial TMAO effects. We investigated the molecular effects of TMAO on functional β-cell mass. We hypothesized that TMAO may damage functional β-cell mass by inhibiting β-cell viability, survival, proliferation, or function to promote T2D pathogenesis. We treated INS-1 832/13 β-cells and primary rat islets with physiological TMAO concentrations and compared functional β-cell mass under healthy standard cell culture (SCC) and T2D-like glucolipotoxic (GLT) conditions. GLT significantly impeded β-cell mass and function by inducing oxidative and endoplasmic reticulum (ER) stress. TMAO normalized GLT-mediated damage in β-cells and primary islet function. Acute 40µM TMAO recovered insulin production, insulin granule formation, and insulin secretion by upregulating the IRE1α unfolded protein response to GLT-induced ER and oxidative stress. These novel results demonstrate that TMAO protects β-cell function and suggest that TMAO may play a beneficial molecular role in diet-induced T2D conditions.
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Gu ZY, Pei WL, Zhang Y, Zhu J, Li L, Zhang Z. Akkermansia muciniphila in inflammatory bowel disease and colorectal cancer. Chin Med J (Engl) 2021; 134:2841-2843. [PMID: 34711719 PMCID: PMC8667969 DOI: 10.1097/cm9.0000000000001829] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Indexed: 12/13/2022] Open
Affiliation(s)
- Zhen-Yang Gu
- Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 211166, China
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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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28
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Goh YQ, Cheam G, Wang Y. Understanding Choline Bioavailability and Utilization: First Step Toward Personalizing Choline Nutrition. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:10774-10789. [PMID: 34392687 DOI: 10.1021/acs.jafc.1c03077] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Choline is an essential macronutrient involved in neurotransmitter synthesis, cell-membrane signaling, lipid transport, and methyl-group metabolism. Nevertheless, the vast majority are not meeting the recommended intake requirement. Choline deficiency is linked to nonalcoholic fatty liver disease, skeletal muscle atrophy, and neurodegenerative diseases. The conversion of dietary choline to trimethylamine by gut microbiota is known for its association with atherosclerosis and may contribute to choline deficiency. Choline-utilizing bacteria constitutes less than 1% of the gut community and is modulated by lifestyle interventions such as dietary patterns, antibiotics, and probiotics. In addition, choline utilization is also affected by genetic factors, further complicating the impact of choline on health. This review overviews the complex interplay between dietary intakes of choline, gut microbiota and genetic factors, and the subsequent impact on health. Understanding of gut microbiota metabolism of choline substrates and interindividual variability is warranted in the development of personalized choline nutrition.
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Affiliation(s)
- Ying Qi Goh
- Singapore Phenome Center, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921
| | - Guoxiang Cheam
- School of Biological Sciences, Nanyang Technological University, Singapore 639798
| | - Yulan Wang
- Singapore Phenome Center, Lee Kong Chian School of Medicine, Nanyang Technological University, Singapore 636921
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He S, Jiang H, Zhuo C, Jiang W. Trimethylamine/Trimethylamine-N-Oxide as a Key Between Diet and Cardiovascular Diseases. Cardiovasc Toxicol 2021; 21:593-604. [PMID: 34003426 DOI: 10.1007/s12012-021-09656-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Accepted: 04/27/2021] [Indexed: 02/08/2023]
Abstract
Trimethylamine (TMA) is a gut microbiota-derived metabolite which comes from diets rich of choline, betaine or L-carnitine and could be further converted to Trimethylamine-N-oxide (TMAO) in the liver. As the function of gut microbiota and its metabolites being explored so far, studies suggest that TMAO may be a potential risk factor of cardiovascular diseases independent of other traditional risk factors. However, the precise role of TMAO is controversial as some converse results were discovered. In recent studies, it is hypothesized that TMA may also participate in the progression of cardiovascular diseases and some cytotoxic effect of TMA has been discovered. Thus, exploring the relationship between TMA, TMAO and CVD may bring a novel insight into the diagnosis and therapy of cardiovascular diseases. In this review, we discussed the factors which influence the TMA/TMAO's process of metabolism in the human body. We have also summarized the pathogenic effect of TMA/TMAO in cardiovascular diseases, as well as the limitation of some controversial discoveries.
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Affiliation(s)
- Siyu He
- West China School of Medicine, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Hong Jiang
- West China School of Medicine, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Caili Zhuo
- The Laboratory of Cardiovascular Diseases, Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China
| | - Wei Jiang
- The Laboratory of Cardiovascular Diseases, Molecular Medicine Research Center, State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, People's Republic of China.
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30
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Bekhit AEDA, Giteru SG, Holman BWB, Hopkins DL. Total volatile basic nitrogen and trimethylamine in muscle foods: Potential formation pathways and effects on human health. Compr Rev Food Sci Food Saf 2021; 20:3620-3666. [PMID: 34056832 DOI: 10.1111/1541-4337.12764] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 03/30/2021] [Accepted: 04/02/2021] [Indexed: 12/18/2022]
Abstract
The use of total volatile basic nitrogen (TVB-N) as a quality parameter for fish is rapidly growing to include other types of meat. Investigations of meat quality have recently focused on TVB-N as an index of freshness, but little is known on the biochemical pathways involved in its generation. Furthermore, TVB-N and methylated amines have been reported to exert deterimental health effects, but the relationship between these compounds and human health has not been critically reviewed. Here, literature on the formative pathways of TVB-N has been reviewed in depth. The association of methylated amines and human health has been critically evaluated. Interventions to mitigate the effects of TVB-N on human health are discussed. TVB-N levels in meat can be influenced by the diet of an animal, which calls for careful consideration when using TVB-N thresholds for regulatory purposes. Bacterial contamination and temperature abuse contribute to significant levels of post-mortem TVB-N increases. Therefore, controlling spoilage factors through a good level of hygiene during processing and preservation techniques may contribute to a substantial reduction of TVB-N. Trimethylamine (TMA) constitutes a significant part of TVB-N. TMA and trimethylamine oxide (TMA-N-O) have been related to the pathogenesis of noncommunicable diseases, including atherosclerosis, cancers, and diabetes. Proposed methods for mitigation of TMA and TMA-N-O accumulation are discussed, which include a reduction in their daily dietary intake, control of internal production pathways by targeting gut microbiota, and inhibition of flavin monooxygenase 3 enzymes. The levels of TMA and TMA-N-O have significant health effects, and this should, therefore, be considered when evaluating meat quality and acceptability. Agreed international values for TVB-N and TMA in meat products are required. The role of feed, gut microbiota, and translocation of methylated amines to muscles in farmed animals requires further investigation.
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Affiliation(s)
| | - Stephen G Giteru
- Department of Food Science, University of Otago, Dunedin, New Zealand.,Food & Bio-based Products, AgResearch Limited, Tennent Drive, Palmerston North, 4410, New Zealand
| | - Benjamin W B Holman
- Centre for Red Meat and Sheep Development, NSW Department of Primary Industries, Cowra, New South Wales, Australia
| | - David L Hopkins
- Centre for Red Meat and Sheep Development, NSW Department of Primary Industries, Cowra, New South Wales, Australia
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Thomas MS, Fernandez ML. Trimethylamine N-Oxide (TMAO), Diet and Cardiovascular Disease. Curr Atheroscler Rep 2021; 23:12. [PMID: 33594574 DOI: 10.1007/s11883-021-00910-x] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2021] [Indexed: 12/14/2022]
Abstract
PURPOSE OF REVIEW The association between plasma Trimethylamine N-Oxide (TMAO), diet and risk for cardiovascular disease (CVD) is still not fully understood. While epidemiologic research shows a causal relationship between plasma TMAO concentrations and CVD risk, the role of dietary precursors in determining plasma concentrations of TMAO and biomarkers for CVD is inconclusive. RECENT FINDINGS Studies in diverse populations show that plasma TMAO concentrations are positively associated with inflammation, endothelial dysfunction, type-2 diabetes, central adiposity and hypertension. Most recent studies utilizing challenges of dietary choline have not shown increases in plasma chronic TMAO concentrations while studies with carnitine have shown increases in plasma TMAO but in some cases, no alterations in plasma lipids or biomarkers of oxidative stress were observed. TMAO is an important plasma metabolite that through several mechanisms can increase the risk of CVD. The correlations between dietary choline and carnitine on chronic plasma TMAO levels and risk for CVD requires further investigation.
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Affiliation(s)
- Minu S Thomas
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT, 06269, USA
| | - Maria Luz Fernandez
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT, 06269, USA.
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Uremic Toxins in the Progression of Chronic Kidney Disease and Cardiovascular Disease: Mechanisms and Therapeutic Targets. Toxins (Basel) 2021; 13:toxins13020142. [PMID: 33668632 PMCID: PMC7917723 DOI: 10.3390/toxins13020142] [Citation(s) in RCA: 130] [Impact Index Per Article: 43.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 12/24/2022] Open
Abstract
Chronic kidney disease (CKD) is a progressive loss of renal function. The gradual decline in kidney function leads to an accumulation of toxins normally cleared by the kidneys, resulting in uremia. Uremic toxins are classified into three categories: free water-soluble low-molecular-weight solutes, protein-bound solutes, and middle molecules. CKD patients have increased risk of developing cardiovascular disease (CVD), due to an assortment of CKD-specific risk factors. The accumulation of uremic toxins in the circulation and in tissues is associated with the progression of CKD and its co-morbidities, including CVD. Although numerous uremic toxins have been identified to date and many of them are believed to play a role in the progression of CKD and CVD, very few toxins have been extensively studied. The pathophysiological mechanisms of uremic toxins must be investigated further for a better understanding of their roles in disease progression and to develop therapeutic interventions against uremic toxicity. This review discusses the renal and cardiovascular toxicity of uremic toxins indoxyl sulfate, p-cresyl sulfate, hippuric acid, TMAO, ADMA, TNF-α, and IL-6. A focus is also placed on potential therapeutic targets against uremic toxicity.
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Gatarek P, Kaluzna-Czaplinska J. Trimethylamine N-oxide (TMAO) in human health. EXCLI JOURNAL 2021; 20:301-319. [PMID: 33746664 PMCID: PMC7975634 DOI: 10.17179/excli2020-3239] [Citation(s) in RCA: 54] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 02/08/2021] [Indexed: 12/17/2022]
Abstract
Due to numerous links between trimethylamine-N-oxide (TMAO) and various disorders and diseases, this topic is very popular and is often taken up by researchers. TMAO is a low molecular weight compound that belongs to the class of amine oxides. It is formed by the process of oxidation of trimethylamine (TMA) by the hepatic flavin monooxygenases (FMO1 and FMO3). TMAO is mainly formed from nutritional substrates from the metabolism of phosphatidylcholine/choline, carnitine, betaine, dimethylglycine, and ergothioneine by intestinal microflora in the colon. Its level is determined by many factors, such as age, gender, diet, intestinal microflora composition, kidney function, and also liver flavin monooxygenase activity. Many studies report a positive relationship between the level of TMAO concentration and the development of various diseases, such as cardiovascular diseases and cardiorenal disorders, including atherosclerosis, hypertension, ischemic stroke, atrial fibrillation, heart failure, acute myocardial infarction, and chronic kidney disease, and also diabetes mellitus, metabolic syndrome, cancers (stomach, colon), as well as neurological disorders. In this review, we have summarized the current knowledge on the effects of TMAO on human health, the relationship between TMAO and intestinal microbiota, the role of TMAO in different diseases, and current analytical techniques used in TMAO determination in body fluids.
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Affiliation(s)
- Paulina Gatarek
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Lodz, Poland
| | - Joanna Kaluzna-Czaplinska
- Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Lodz, Poland
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Gut Microbiome and Precision Nutrition in Heart Failure: Hype or Hope? Curr Heart Fail Rep 2021; 18:23-32. [DOI: 10.1007/s11897-021-00503-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 01/21/2021] [Indexed: 02/06/2023]
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Iglesias-Carres L, Hughes MD, Steele CN, Ponder MA, Davy KP, Neilson AP. Use of dietary phytochemicals for inhibition of trimethylamine N-oxide formation. J Nutr Biochem 2021; 91:108600. [PMID: 33577949 DOI: 10.1016/j.jnutbio.2021.108600] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 12/01/2020] [Accepted: 12/30/2020] [Indexed: 12/12/2022]
Abstract
Trimethylamine-N-oxide (TMAO) has been reported as a risk factor for atherosclerosis development, as well as for other cardiovascular disease (CVD) pathologies. The objective of this review is to provide a useful summary on the use of phytochemicals as TMAO-reducing agents. This review discusses the main mechanisms by which TMAO promotes CVD, including the modulation of lipid and bile acid metabolism, and the promotion of endothelial dysfunction and oxidative stress. Current knowledge on the available strategies to reduce TMAO formation are discussed, highlighting the effect and potential of phytochemicals. Overall, phytochemicals (i.e., phenolic compounds or glucosinolates) reduce TMAO formation by modulating gut microbiota composition and/or function, inhibiting host's capacity to metabolize TMA to TMAO, or a combination of both. Perspectives for design of future studies involving phytochemicals as TMAO-reducing agents are discussed. Overall, the information provided by this review outlines the current state of the art of the role of phytochemicals as TMAO reducing agents, providing valuable insight to further advance in this field of study.
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Affiliation(s)
- Lisard Iglesias-Carres
- Department of Food, Bioprocessing and Nutrition Sciences, Plants for Human Health Institute, North Carolina State University, Kannapolis, NC
| | - Michael D Hughes
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA
| | - Cortney N Steele
- Department of Human Nutrition, Foods and Exercise, Virginia Polytechnic Institute and State University, Blacksburg, VA
| | - Monica A Ponder
- Department of Food Science and Technology, Virginia Polytechnic Institute and State University, Blacksburg, VA
| | - Kevin P Davy
- Department of Human Nutrition, Foods and Exercise, Virginia Polytechnic Institute and State University, Blacksburg, VA
| | - Andrew P Neilson
- Department of Food, Bioprocessing and Nutrition Sciences, Plants for Human Health Institute, North Carolina State University, Kannapolis, NC.
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Coutinho-Wolino KS, de F Cardozo LFM, de Oliveira Leal V, Mafra D, Stockler-Pinto MB. Can diet modulate trimethylamine N-oxide (TMAO) production? What do we know so far? Eur J Nutr 2021; 60:3567-3584. [PMID: 33533968 DOI: 10.1007/s00394-021-02491-6] [Citation(s) in RCA: 44] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Accepted: 01/08/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND Trimethylamine N-oxide (TMAO) is a metabolite that has attracted attention due to its positive association with several chronic non-communicable diseases such as insulin resistance, atherosclerotic plaque formation, diabetes, cancer, heart failure, hypertension, chronic kidney disease, liver steatosis, cardiac fibrosis, endothelial injury, neural degeneration and Alzheimer's disease. TMAO production results from the fermentation by the gut microbiota of dietary nutrients such as choline and carnitine, which are transformed to trimethylamine (TMA) and converted into TMAO in the liver by flavin-containing monooxygenase 1 and 3 (FMO1 and FMO3). Considering that TMAO is involved in the development of many chronic diseases, strategies have been found to enhance a healthy gut microbiota. In this context, some studies have shown that nutrients and bioactive compounds from food can modulate the gut microbiota and possibly reduce TMAO production. OBJECTIVE This review has as main objective to discuss the studies that demonstrated the effects of food on the reduction of this harmful metabolite. METHODS All relevant articles until November 2020 were included. The articles were searched in Medline through PubMed. RESULTS Both the food is eaten acutely and chronically, by altering the nature of the gut microbiota, influencing colonic TMA production. Furthermore, hepatic production of TMAO by the flavin monooxygenases in the liver may also be influenced by phenolic compounds present in foods. CONCLUSION The evidence presented in this review shows that TMAO levels can be reduced by some bioactive compounds. However, it is crucial to notice that there is significant variation among the studies. Further clinical studies should be conducted to evaluate these dietary components' effectiveness, dose, and intervention time on TMAO levels and its precursors.
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Affiliation(s)
| | - Ludmila F M de F Cardozo
- Postgraduate Program in Cardiovascular Sciences, Faculty of Medicine, Fluminense Federal University, Niterói, Brazil
| | - Viviane de Oliveira Leal
- Division of Nutrition, Pedro Ernesto University Hospital, State University of Rio de Janeiro (UERJ), Rio de Janeiro, Brazil
| | - Denise Mafra
- Postgraduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil.,Postgraduate Program in Cardiovascular Sciences, Faculty of Medicine, Fluminense Federal University, Niterói, Brazil.,Postgraduate Program in Medical Sciences, Faculty of Medicine, Fluminense Federal University, Niterói, Brazil
| | - Milena Barcza Stockler-Pinto
- Postgraduate Program in Nutrition Sciences, Fluminense Federal University (UFF), Niterói, RJ, Brazil.,Postgraduate Program in Cardiovascular Sciences, Faculty of Medicine, Fluminense Federal University, Niterói, Brazil
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Romanenko M, Kholin V, Koliada A, Vaiserman A. Nutrition, Gut Microbiota, and Alzheimer's Disease. Front Psychiatry 2021; 12:712673. [PMID: 34421687 PMCID: PMC8374099 DOI: 10.3389/fpsyt.2021.712673] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/12/2021] [Indexed: 12/17/2022] Open
Abstract
Nutrition is known to play an important role in the pathogenesis of Alzheimer's disease. Evidence is obtained that the gut microbiota is a key player in these processes. Dietary changes (both adverse and beneficial) may influence the microbiome composition, thereby affecting the gut-brain axis and the subsequent risk for Alzheimer's disease progression. In this review, the research findings that support the role of intestinal microbiota in connection between nutritional factors and the risk for Alzheimer's disease onset and progression are summarized. The mechanisms potentially involved in these processes as well as the potential of probiotics and prebiotics in therapeutic modulation of contributed pathways are discussed.
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Affiliation(s)
- Mariana Romanenko
- Laboratory of Dietetics, D.F. Chebotarev State Institute of Gerontology NAMS of Ukraine, Kyiv, Ukraine
| | - Victor Kholin
- Department of Age Physiology and Pathology of the Nervous System, D.F. Chebotarev State Institute of Gerontology NAMS of Ukraine, Kyiv, Ukraine
| | | | - Alexander Vaiserman
- Laboratory of Epigenetics, D.F. Chebotarev State Institute of Gerontology NAMS of Ukraine, Kyiv, Ukraine
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Crimarco A, Springfield S, Petlura C, Streaty T, Cunanan K, Lee J, Fielding-Singh P, Carter MM, Topf MA, Wastyk HC, Sonnenburg ED, Sonnenburg JL, Gardner CD. A randomized crossover trial on the effect of plant-based compared with animal-based meat on trimethylamine-N-oxide and cardiovascular disease risk factors in generally healthy adults: Study With Appetizing Plantfood-Meat Eating Alternative Trial (SWAP-MEAT). Am J Clin Nutr 2020; 112:1188-1199. [PMID: 32780794 PMCID: PMC7657338 DOI: 10.1093/ajcn/nqaa203] [Citation(s) in RCA: 122] [Impact Index Per Article: 30.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Accepted: 06/29/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Despite the rising popularity of plant-based alternative meats, there is limited evidence of the health effects of these products. OBJECTIVES We aimed to compare the effect of consuming plant-based alternative meat (Plant) as opposed to animal meat (Animal) on health factors. The primary outcome was fasting serum trimethylamine-N-oxide (TMAO). Secondary outcomes included fasting insulin-like growth factor 1, lipids, glucose, insulin, blood pressure, and weight. METHODS SWAP-MEAT (The Study With Appetizing Plantfood-Meat Eating Alternatives Trial) was a single-site, randomized crossover trial with no washout period. Participants received Plant and Animal products, dietary counseling, lab assessments, microbiome assessments (16S), and anthropometric measurements. Participants were instructed to consume ≥2 servings/d of Plant compared with Animal for 8 wk each, while keeping all other foods and beverages as similar as possible between the 2 phases. RESULTS The 36 participants who provided complete data for both crossover phases included 67% women, were 69% Caucasian, had a mean ± SD age 50 ± 14 y, and BMI 28 ± 5 kg/m2. Mean ± SD servings per day were not different by intervention sequence: 2.5 ± 0.6 compared with 2.6 ± 0.7 for Plant and Animal, respectively (P = 0.76). Mean ± SEM TMAO concentrations were significantly lower overall for Plant (2.7 ± 0.3) than for Animal (4.7 ± 0.9) (P = 0.012), but a significant order effect was observed (P = 0.023). TMAO concentrations were significantly lower for Plant among the n = 18 who received Plant second (2.9 ± 0.4 compared with 6.4 ± 1.5, Plant compared with Animal, P = 0.007), but not for the n = 18 who received Plant first (2.5 ± 0.4 compared with 3.0 ± 0.6, Plant compared with Animal, P = 0.23). Exploratory analyses of the microbiome failed to reveal possible responder compared with nonresponder factors. Mean ± SEM LDL-cholesterol concentrations (109.9 ± 4.5 compared with 120.7 ± 4.5 mg/dL, P = 0.002) and weight (78.7 ± 3.0 compared with 79.6 ± 3.0 kg, P < 0.001) were lower during the Plant phase. CONCLUSIONS Among generally healthy adults, contrasting Plant with Animal intake, while keeping all other dietary components similar, the Plant products improved several cardiovascular disease risk factors, including TMAO; there were no adverse effects on risk factors from the Plant products.This trial was registered at clinicaltrials.gov as NCT03718988.
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Affiliation(s)
- Anthony Crimarco
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Sparkle Springfield
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Christina Petlura
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Taylor Streaty
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Kristen Cunanan
- Quantitative Sciences Unit, Stanford University School of Medicine, Stanford, CA, USA
| | - Justin Lee
- Quantitative Sciences Unit, Stanford University School of Medicine, Stanford, CA, USA
| | - Priya Fielding-Singh
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Matthew M Carter
- Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Madeline A Topf
- Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
| | - Hannah C Wastyk
- Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Department of Bioengineering, Stanford University School of Medicine, Stanford, CA, USA
| | - Erica D Sonnenburg
- Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Center for Human Microbiome Studies, Stanford University, Stanford, CA, USA
| | - Justin L Sonnenburg
- Microbiology and Immunology, Stanford University School of Medicine, Stanford, CA, USA
- Center for Human Microbiome Studies, Stanford University, Stanford, CA, USA
- Chan Zuckerberg Biohub, San Francisco, CA, USA
| | - Christopher D Gardner
- Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA, USA
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Chen H, Zhang F, Zhang J, Zhang X, Guo Y, Yao Q. A Holistic View of Berberine Inhibiting Intestinal Carcinogenesis in Conventional Mice Based on Microbiome-Metabolomics Analysis. Front Immunol 2020; 11:588079. [PMID: 33072135 PMCID: PMC7541814 DOI: 10.3389/fimmu.2020.588079] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2020] [Accepted: 09/02/2020] [Indexed: 12/24/2022] Open
Abstract
Berberine (BBR) has been reported that it has effects on inhibiting colorectal cancer (CRC). However, the mechanism of BBR on CRC also remains largely unknown. Herein, we investigated the therapeutic effects of BBR on CRC from the perspective of gut microbiota and metabolic alterations, which can provide a holistic view to understand the effects of BBR on CRC. First, azoxymethane (AOM)/dextran sodium sulfate (DSS) mouse was used as CRC animal model, then the degree of colorectal carcinogenesis in AOM/DSS mice with or without BBR administration was measured. The composition and abundance of gut microbiota was investigated by using 16S rRNA. Meanwhile, feces samples were analyzed with 1H NMR spectroscopy to investigate the metabolic alterations. As a result, BBR significantly reduced intestinal tumor development with lower macroscopic polyps and ki-67 expression of intestinal tissue, and better colonic morphology in mice. Moreover, BBR altered the composition of gut microbiota in AOM/DSS mice obviously, which were characterized by a decrease of Actinobacteria and Verrucomicrobia significantly at the phylum level. At the genus level, it was able to suppress pathogenic species, such as f_Erysipelotrichaceae, Alistipes, and elevate some short-chain fatty acids (SCFA)-producing bacteria, including Alloprevotella, Flavonifractor, and Oscillibacter. Metabolic data further revealed that BBR induced metabolic changes in feces focus on regulating glycometabolism, SCFA metabolism and amino acid metabolism, which also provides evidence for alteration of the microbiota because these feces metabolites are the products of interactions between the host and the microbial community. This study showed that BBR induced alterations in microbiota and metabolic in AOM/DSS mice, which might providing new insight into the inhibition effects of BBR on CRC.
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Affiliation(s)
- Haitao Chen
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Fan Zhang
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jin Zhang
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Xinjie Zhang
- The Second Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yong Guo
- Department of Oncology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
| | - Qinghua Yao
- Department of Integrated Traditional Chinese and Western Medicine, Cancer Hospital of the University of Chinese Academy of Sciences (Zhejiang Cancer Hospital), Hangzhou, China
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Arias N, Arboleya S, Allison J, Kaliszewska A, Higarza SG, Gueimonde M, Arias JL. The Relationship between Choline Bioavailability from Diet, Intestinal Microbiota Composition, and Its Modulation of Human Diseases. Nutrients 2020; 12:nu12082340. [PMID: 32764281 PMCID: PMC7468957 DOI: 10.3390/nu12082340] [Citation(s) in RCA: 87] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 07/28/2020] [Accepted: 07/30/2020] [Indexed: 02/06/2023] Open
Abstract
Choline is a water-soluble nutrient essential for human life. Gut microbial metabolism of choline results in the production of trimethylamine (TMA), which, upon absorption by the host is converted into trimethylamine-N-oxide (TMAO) in the liver. A high accumulation of both components is related to cardiovascular disease, inflammatory bowel disease, non-alcoholic fatty liver disease, and chronic kidney disease. However, the relationship between the microbiota production of these components and its impact on these diseases still remains unknown. In this review, we will address which microbes contribute to TMA production in the human gut, the extent to which host factors (e.g., the genotype) and diet affect TMA production, and the colonization of these microbes and the reversal of dysbiosis as a therapy for these diseases.
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Affiliation(s)
- Natalia Arias
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33003 Oviedo, Asturias, Spain; (S.G.H.); (J.L.A.)
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
- Correspondence:
| | - Silvia Arboleya
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33003 Oviedo, Asturias, Spain; (S.A.); (M.G.)
| | - Joseph Allison
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
| | - Aleksandra Kaliszewska
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, King’s College London, Denmark Hill, London SE5 8AF, UK; (J.A.); (A.K.)
| | - Sara G. Higarza
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33003 Oviedo, Asturias, Spain; (S.G.H.); (J.L.A.)
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Plaza Feijóo, s/n, 33003 Oviedo, Asturias, Spain
| | - Miguel Gueimonde
- Department of Microbiology and Biochemistry of Dairy Products, Instituto de Productos Lácteos de Asturias (IPLA-CSIC), 33003 Oviedo, Asturias, Spain; (S.A.); (M.G.)
| | - Jorge L. Arias
- Instituto de Neurociencias del Principado de Asturias (INEUROPA), 33003 Oviedo, Asturias, Spain; (S.G.H.); (J.L.A.)
- Laboratory of Neuroscience, Department of Psychology, University of Oviedo, Plaza Feijóo, s/n, 33003 Oviedo, Asturias, Spain
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Ventriglio A, Sancassiani F, Contu MP, Latorre M, Di Slavatore M, Fornaro M, Bhugra D. Mediterranean Diet and its Benefits on Health and Mental Health: A Literature Review. Clin Pract Epidemiol Ment Health 2020; 16:156-164. [PMID: 33029192 PMCID: PMC7536728 DOI: 10.2174/1745017902016010156] [Citation(s) in RCA: 75] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 06/04/2020] [Accepted: 06/06/2020] [Indexed: 12/26/2022]
Abstract
Mediterranean Diet (MD) is currently considered one of the most healthy dietary models worldwide. It is generally based on the daily intake of fruit and vegetables, whole grains, legumes, nuts, fish, white meats, and olive oil. It may also include moderate consumption of fermented dairy products, a low intake of red meat, and red/white wine during the main course. Even if the effect of MD on cancer prevention as well as on human metabolic and cardiovascular balance has been discussed, including the quality of life of the exposed population, the putative effects on mental health are still not properly investigated. This narrative review reports on some emerging pieces of evidence on the possible impact of MD on general health and the outcome of psychiatric disorders (e.g., major depression, anxiety) and encourages further studies to test the benefits of healthy food selection on the health of the general population.
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Affiliation(s)
- Antonio Ventriglio
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Federica Sancassiani
- Dipartimento di Scienze Mediche e Sanità Pubblica, Università degli Studi di Cagliari, Cagliari, Italy
| | - Maria Paola Contu
- Dipartimento di Scienze Chirurgiche, Università degli Studi di Cagliari, Cagliari, Italy
| | - Mariateresa Latorre
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Melanie Di Slavatore
- Department of Clinical and Experimental Medicine, University of Foggia, Foggia, Italy
| | - Michele Fornaro
- Department of Neuroscience, Reproductive Science and Odontostomatology, School of Medicine 'Federico II' Naples, Naples, Italy
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Abstract
We critically review potential involvement of trimethylamine N-oxide (TMAO) as a link between diet, the gut microbiota and CVD. Generated primarily from dietary choline and carnitine by gut bacteria and hepatic flavin-containing mono-oxygenase (FMO) activity, TMAO could promote cardiometabolic disease when chronically elevated. However, control of circulating TMAO is poorly understood, and diet, age, body mass, sex hormones, renal clearance, FMO3 expression and genetic background may explain as little as 25 % of TMAO variance. The basis of elevations with obesity, diabetes, atherosclerosis or CHD is similarly ill-defined, although gut microbiota profiles/remodelling appear critical. Elevated TMAO could promote CVD via inflammation, oxidative stress, scavenger receptor up-regulation, reverse cholesterol transport (RCT) inhibition, and cardiovascular dysfunction. However, concentrations influencing inflammation, scavenger receptors and RCT (≥100 µm) are only achieved in advanced heart failure or chronic kidney disease (CKD), and greatly exceed pathogenicity of <1-5 µm levels implied in some TMAO-CVD associations. There is also evidence that CVD risk is insensitive to TMAO variance beyond these levels in omnivores and vegetarians, and that major TMAO sources are cardioprotective. Assessing available evidence suggests that modest elevations in TMAO (≤10 µm) are a non-pathogenic consequence of diverse risk factors (ageing, obesity, dyslipidaemia, insulin resistance/diabetes, renal dysfunction), indirectly reflecting CVD risk without participating mechanistically. Nonetheless, TMAO may surpass a pathogenic threshold as a consequence of CVD/CKD, secondarily promoting disease progression. TMAO might thus reflect early CVD risk while providing a prognostic biomarker or secondary target in established disease, although mechanistic contributions to CVD await confirmation.
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Simó C, García-Cañas V. Dietary bioactive ingredients to modulate the gut microbiota-derived metabolite TMAO. New opportunities for functional food development. Food Funct 2020; 11:6745-6776. [PMID: 32686802 DOI: 10.1039/d0fo01237h] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
There is a growing body of clinical evidence that supports a strong association between elevated circulating trimethylamine N-oxide (TMAO) levels with increased risk of developing adverse cardiovascular outcomes such as atherosclerosis and thrombosis. TMAO is synthesized through a meta-organismal stepwise process that involves (i) the microbial production of TMA in the gut from dietary precursors and (ii) its subsequent oxidation to TMAO by flavin-containing monooxygenases in the liver. Choline, l-carnitine, betaine, and other TMA-containing compounds are the major dietary precursors of TMA. TMAO can also be absorbed directly from the gastrointestinal tract after the intake of TMAO-rich foods such as fish and shellfish. Thus, diet is an important factor as it provides the nutritional precursors to eventually produce TMAO. A number of studies have attempted to associate circulating TMAO levels with the consumption of diets rich in these foods. On the other hand, there is growing interest for the development of novel food ingredients that reduce either the TMAO-induced damage or the endogenous TMAO levels through the interference with microbiota and host metabolic processes involved in TMAO pathway. Such novel functional food ingredients would offer great opportunities to control circulating TMAO levels or its effects, and potentially contribute to decrease cardiovascular risk. In this review we summarize and discuss current data regarding the effects of TMA precursors-enriched foods or diets on circulating TMAO levels, and recent findings regarding the circulating TMAO-lowering effects of specific foods, food constituents and phytochemicals found in herbs, individually or in extracts, and their potential beneficial effect for cardiovascular health.
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Affiliation(s)
- C Simó
- Molecular Nutrition and Metabolism, Institute of Food Science Research (CIAL, CSIC-UAM), c/Nicolás Cabrera 9, 28049 Madrid, Spain.
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In older women, a high-protein diet including animal-sourced foods did not impact serum levels and urinary excretion of trimethylamine-N-oxide. Nutr Res 2020; 78:72-81. [PMID: 32544852 DOI: 10.1016/j.nutres.2020.05.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 04/02/2020] [Accepted: 05/09/2020] [Indexed: 12/11/2022]
Abstract
Diets including red meat and other animal-sourced foods may increase proteolytic fermentation and microbial-generated trimethylamine (TMA) and, subsequently, trimethylamine-N-oxide (TMAO), a metabolite associated with increased risk of cardiovascular disease and dementia. It was hypothesized that compared to usual dietary intake, a maintenance-energy high-protein diet (HPD) would increase products of proteolytic fermentation, whereas adjunctive prebiotic, probiotic, and synbiotic supplementation may mitigate these effects. An exploratory aim was to determine the association of the relative abundance of the TMA-generating taxon, Emergencia timonensis, with serum and urinary TMAO. At 5 time points (usual dietary intake, HPD diet, HPD + prebiotic, HPD + probiotic, and HPD + synbiotic), urinary (24-hour) and serum metabolites and fecal microbiota profile of healthy older women (n = 20) were measured by liquid chromatography-tandem mass spectrometry and 16S rRNA gene amplicon sequencing analyses, respectively. The HPD induced increases in serum levels of l-carnitine, indoxyl sulfate, and phenylacetylglutamine but not TMAO or p-cresyl sulfate. Urinary excretion of l-carnitine, indoxyl sulfate, phenylacetylglutamine, and TMA increased with the HPD but not TMAO or p-cresyl sulfate. Most participants had undetectable levels of E.timonensis at baseline and only 50% during the HPD interventions, suggesting other taxa are responsible for the microbial generation of TMA in these individuals. An HPD diet with or without a prebiotic, probiotic, or synbiotic elicited an increase in products of proteolytic fermentation. The urinary l-carnitine response suggests that the additional dietary l-carnitine provided was primarily bioavailable, providing little substrate for microbial conversion to TMA and subsequent TMAO formation.
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Papandreou C, Moré M, Bellamine A. Trimethylamine N-Oxide in Relation to Cardiometabolic Health-Cause or Effect? Nutrients 2020; 12:E1330. [PMID: 32392758 PMCID: PMC7284902 DOI: 10.3390/nu12051330] [Citation(s) in RCA: 76] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 04/29/2020] [Accepted: 05/04/2020] [Indexed: 12/19/2022] Open
Abstract
Trimethylamine-N-oxide (TMAO) is generated in a microbial-mammalian co-metabolic pathway mainly from the digestion of meat-containing food and dietary quaternary amines such as phosphatidylcholine, choline, betaine, or L-carnitine. Fish intake provides a direct significant source of TMAO. Human observational studies previously reported a positive relationship between plasma TMAO concentrations and cardiometabolic diseases. Discrepancies and inconsistencies of recent investigations and previous studies questioned the role of TMAO in these diseases. Several animal studies reported neutral or even beneficial effects of TMAO or its precursors in cardiovascular disease model systems, supporting the clinically proven beneficial effects of its precursor, L-carnitine, or a sea-food rich diet (naturally containing TMAO) on cardiometabolic health. In this review, we summarize recent preclinical and epidemiological evidence on the effects of TMAO, in order to shed some light on the role of TMAO in cardiometabolic diseases, particularly as related to the microbiome.
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Abstract
We are in the midst of “the microbiome revolution”—not a day goes by without some new revelation on the potential role of the gut microbiome in some disease or disorder. From an ever-increasing recognition of the many roles of the gut microbiome in health and disease comes the expectation that its modulation could treat or prevent these very same diseases. A variety of interventions could, at least in theory, be employed to alter the composition or functional capacity of the microbiome, ranging from diet to fecal microbiota transplantation (FMT). For some, such as antibiotics, prebiotics, and probiotics, an extensive, albeit far from consistent, literature already exists; for others, such as other dietary supplements and FMT, high-quality clinical studies are still relatively few in number. Not surprisingly, researchers have turned to the microbiome itself as a source for new entities that could be used therapeutically to manipulate the microbiome; for example, some probiotic strains currently in use were sourced from the gastrointestinal tract of healthy humans. From all of the extant studies of interventions targeted at the gut microbiome, a number of important themes have emerged. First, with relatively few exceptions, we are still a long way from a precise definition of the role of the gut microbiome in many of the diseases where a disturbed microbiome has been described—association does not prove causation. Second, while animal models can provide fascinating insights into microbiota–host interactions, they rarely recapitulate the complete human phenotype. Third, studies of several interventions have been difficult to interpret because of variations in study population, test product, and outcome measures, not to mention limitations in study design. The goal of microbiome modulation is a laudable one, but we need to define our targets, refine our interventions, and agree on outcomes.
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Affiliation(s)
- Eamonn M M Quigley
- Lynda K and David M Underwood Center for Digestive Disorders, Division of Gastroenterology and Hepatology, Houston Methodist Hospital, Houston, Texas, 77030, USA
| | - Prianka Gajula
- Department of Medicine, Houston Methodist Hospital, Houston, Texas, 77030, USA
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Dogan B, Karaer A, Tuncay G, Tecellioglu N, Mumcu A. High-resolution 1H-NMR spectroscopy indicates variations in metabolomics profile of follicular fluid from women with advanced maternal age. J Assist Reprod Genet 2020; 37:321-330. [PMID: 31942667 DOI: 10.1007/s10815-020-01693-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 01/10/2020] [Indexed: 12/31/2022] Open
Abstract
AIM To reveal whether there are differences in follicular fluid metabolomics profile of women with advanced maternal age (AMA). METHOD The group with advanced maternal age includes 23 patients above the age of 40, and the control group includes 31 patients aged between 25 and 35 years and AMH values above 1.1 ng/mL with no low ovarian response history. A single follicular fluid sample from a MII oocyte obtained during the oocyte pick-up procedure was analyzed with high-resolution 1H-NMR (nuclear magnetic resonance) spectroscopy. The results were evaluated using advanced bioinformatics analysis methods. RESULTS Statistical analysis of the NMR spectroscopy data from two groups showed that α-glucose and β-glucose levels of follicular fluid were decreased in the patients with AMA, while in contrast, lactate and trimethylamine N-oxide (TMAO) levels were increased in these patients compared with the controls. In addition to these, there was an increase in alanine levels and a decrease in acetoacetate levels in patients with AMA. However, these changes were not statistically significant. CONCLUSION Obtained results suggest that the follicular cell metabolism of patients with AMA is different from controls. These environmental changes could be associated with the low success rates of IVF treatment seen in these patients.
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Affiliation(s)
- B Dogan
- Reproductive Sciences & Advanced Bioinformatics Application & Research Center, Inonu University, Malatya, Turkey.,Department of Biomedical Engineering, School of Engineering, Inonu University, Malatya, Turkey
| | - A Karaer
- Reproductive Sciences & Advanced Bioinformatics Application & Research Center, Inonu University, Malatya, Turkey. .,Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Inonu University, School of Medicine, Malatya, Turkey.
| | - G Tuncay
- Reproductive Sciences & Advanced Bioinformatics Application & Research Center, Inonu University, Malatya, Turkey.,Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Inonu University, School of Medicine, Malatya, Turkey
| | - N Tecellioglu
- Reproductive Sciences & Advanced Bioinformatics Application & Research Center, Inonu University, Malatya, Turkey.,Department of Obstetrics and Gynecology, Division of Reproductive Endocrinology and Infertility, Inonu University, School of Medicine, Malatya, Turkey
| | - A Mumcu
- Reproductive Sciences & Advanced Bioinformatics Application & Research Center, Inonu University, Malatya, Turkey.,Laboratory of NMR, Scientific and Technological Research Center, Inonu University, Malatya, Turkey
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Yang S, Li X, Yang F, Zhao R, Pan X, Liang J, Tian L, Li X, Liu L, Xing Y, Wu M. Gut Microbiota-Dependent Marker TMAO in Promoting Cardiovascular Disease: Inflammation Mechanism, Clinical Prognostic, and Potential as a Therapeutic Target. Front Pharmacol 2019; 10:1360. [PMID: 31803054 PMCID: PMC6877687 DOI: 10.3389/fphar.2019.01360] [Citation(s) in RCA: 192] [Impact Index Per Article: 38.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Accepted: 10/28/2019] [Indexed: 12/18/2022] Open
Abstract
Cardiovascular disease (CVD) is the leading cause of death worldwide, especially in developed countries, and atherosclerosis (AS) is the common pathological basis of many cardiovascular diseases (CVDs) such as coronary heart disease (CHD). The role of the gut microbiota in AS has begun to be appreciated in recent years. Trimethylamine N-oxide (TMAO), an important gut microbe-dependent metabolite, is generated from dietary choline, betaine, and L-carnitine. Multiple studies have suggested a correlation between plasma TMAO levels and the risk of AS. However, the mechanism underlying this relationship is still unclear. In this review, we discuss the TMAO-involved mechanisms of atherosclerotic CVD from the perspective of inflammation, inflammation-related immunity, cholesterol metabolism, and atherothrombosis. We also summarize available clinical studies on the role of TMAO in predicting prognostic outcomes, including major adverse cardiovascular events (MACE), in patients presenting with AS. Finally, since TMAO may be a novel therapeutic target for AS, several therapeutic strategies including drugs, dietary, etc. to lower TMAO levels that are currently being explored are also discussed.
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Affiliation(s)
- Shengjie Yang
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xinye Li
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Beijing University of Chinese Medicine, Beijing, China
| | - Fan Yang
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Ran Zhao
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Beijing University of Chinese Medicine, Beijing, China
| | - Xiandu Pan
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China.,Beijing University of Chinese Medicine, Beijing, China
| | - Jiaqi Liang
- Department of Cardiovascular, Beijing Longfu Hospital, Beijing, China
| | - Li Tian
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaoya Li
- Beijing University of Chinese Medicine, Beijing, China.,Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Longtao Liu
- Xiyuan Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Yanwei Xing
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Min Wu
- Guang'an men Hospital, China Academy of Chinese Medical Sciences, Beijing, China
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Wołyniec W, Kasprowicz K, Giebułtowicz J, Korytowska N, Zorena K, Bartoszewicz M, Rita-Tkachenko P, Renke M, Ratkowski W. Changes in Water Soluble Uremic Toxins and Urinary Acute Kidney Injury Biomarkers After 10- and 100-km Runs. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2019; 16:E4153. [PMID: 31661892 PMCID: PMC6862582 DOI: 10.3390/ijerph16214153] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/22/2019] [Accepted: 10/25/2019] [Indexed: 12/24/2022]
Abstract
Acute kidney injury (AKI) is described as a relatively common complication of exercise. In clinical practice the diagnosis of AKI is based on serum creatinine, the level of which is dependent not only on glomerular filtration rate but also on muscle mass and injury. Therefore, the diagnosis of AKI is overestimated after physical exercise. The aim of this study was to determine changes in uremic toxins: creatinine, urea, uric acid, asymmetric dimethylarginine (ADMA), symmetric dimethylarginine (SDMA), trimethylamine N-oxide (TMAO) and urinary makers of AKI: albumin, neutrophil gelatinase-associated lipocalin (uNGAL), kidney injury molecule-1 and cystatin-C (uCyst-C) after long runs. Sixteen runners, mean age 36.7 ± 8.2 years, (2 women, 14 men) participating in 10- and 100-km races were studied. Blood and urine were taken before and after the races to assess markers of AKI. A statistically significant increase in creatinine, urea, uric acid, SDMA and all studied urinary AKI markers was observed. TMAO and ADMA levels did not change. The changes in studied markers seem to be a physiological reaction, because they were observed almost in every runner. The diagnosis of kidney failure after exercise is challenging. The most valuable novel markers which can help in post-exercise AKI diagnosis are uCyst-C and uNGAL.
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Affiliation(s)
- Wojciech Wołyniec
- Department of Occupational, Metabolic and Internal Medicine, Institute of Maritime and Tropical Medicine, Medical University of Gdańsk, 81-519 Gdynia, Poland.
| | - Katarzyna Kasprowicz
- Department of Biology, Ecology and Sports Medicine, Gdańsk University of Physical Education and Sport, 80-336 Gdańsk, Poland.
| | - Joanna Giebułtowicz
- Department of Bioanalysis and Drug Analysis, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland.
| | - Natalia Korytowska
- Department of Bioanalysis and Drug Analysis, Faculty of Pharmacy, Medical University of Warsaw, 02-097 Warsaw, Poland.
| | - Katarzyna Zorena
- Department of Biology Ecology and Sport Medicine, Medical University of Gdańsk, 81-519 Gdynia, Poland.
| | - Maria Bartoszewicz
- Department of Biology Ecology and Sport Medicine, Medical University of Gdańsk, 81-519 Gdynia, Poland.
| | | | - Marcin Renke
- Department of Occupational, Metabolic and Internal Medicine, Institute of Maritime and Tropical Medicine, Medical University of Gdańsk, 81-519 Gdynia, Poland.
| | - Wojciech Ratkowski
- Department of Athletics, Department of Athletics, Gdańsk University of Physical Education and Sport, 80-336 Gdańsk, Poland.
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