Gut microbe-derived metabolite trimethylamine N-oxide induces cardiac hypertrophy and fibrosis

Trimethylamine N-oxide (TMAO), a gut microbe-derived metabolite of dietary choline and other trimethylamine-containing nutrients, has been linked to increased cardiovascular disease risk. It is unknown whether TMAO plays a role in the development of cardiac hypertrophy. Transverse aortic constrictio...

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Veröffentlicht in:Laboratory investigation 2019-03, Vol.99 (3), p.346-357
Hauptverfasser: Li, Zehua, Wu, Zhiye, Yan, Jianyun, Liu, Hailin, Liu, Qicai, Deng, Yi, Ou, Caiwen, Chen, Minsheng
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container_title Laboratory investigation
container_volume 99
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Wu, Zhiye
Yan, Jianyun
Liu, Hailin
Liu, Qicai
Deng, Yi
Ou, Caiwen
Chen, Minsheng
description Trimethylamine N-oxide (TMAO), a gut microbe-derived metabolite of dietary choline and other trimethylamine-containing nutrients, has been linked to increased cardiovascular disease risk. It is unknown whether TMAO plays a role in the development of cardiac hypertrophy. Transverse aortic constriction (TAC) was performed to induce cardiac hypertrophy in Sprague-Dawley (SD) rats. We observed that TMAO levels were significantly elevated in SD rats after 6 weeks of TAC, suggesting the potential role of TMAO in regulating cardiac hypertrophy. In cultured cardiomyocytes, TMAO treatment stimulated cardiac hypertrophy, as indicated by increased cell area of cardiomyocytes and expression of hypertrophic markers including atrial natriuretic peptide (ANP) and beta-myosin heavy chain (β-MHC). Additionally, TMAO treatment induced cardiac hypertrophy and cardiac fibrosis in SD rats. Reducing TMAO synthesis by antibiotics (Abs) attenuated TAC-induced cardiac hypertrophy and fibrosis. Furthermore, pharmacological inhibition of Smad3 by SIS3 significantly reduced the expression of ANP and β-MHC, and cardiomyocyte cell size in TMAO-treated group. These data for the first time demonstrate that gut microbe-derived metabolite TMAO induces cardiac hypertrophy and fibrosis involving Smad3 signaling, suggesting that inhibition of gut microbes or generation of TMAO may become a potential target for the prevention and treatment of cardiac hypertrophy.
doi_str_mv 10.1038/s41374-018-0091-y
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It is unknown whether TMAO plays a role in the development of cardiac hypertrophy. Transverse aortic constriction (TAC) was performed to induce cardiac hypertrophy in Sprague-Dawley (SD) rats. We observed that TMAO levels were significantly elevated in SD rats after 6 weeks of TAC, suggesting the potential role of TMAO in regulating cardiac hypertrophy. In cultured cardiomyocytes, TMAO treatment stimulated cardiac hypertrophy, as indicated by increased cell area of cardiomyocytes and expression of hypertrophic markers including atrial natriuretic peptide (ANP) and beta-myosin heavy chain (β-MHC). Additionally, TMAO treatment induced cardiac hypertrophy and cardiac fibrosis in SD rats. Reducing TMAO synthesis by antibiotics (Abs) attenuated TAC-induced cardiac hypertrophy and fibrosis. Furthermore, pharmacological inhibition of Smad3 by SIS3 significantly reduced the expression of ANP and β-MHC, and cardiomyocyte cell size in TMAO-treated group. These data for the first time demonstrate that gut microbe-derived metabolite TMAO induces cardiac hypertrophy and fibrosis involving Smad3 signaling, suggesting that inhibition of gut microbes or generation of TMAO may become a potential target for the prevention and treatment of cardiac hypertrophy.</description><identifier>ISSN: 0023-6837</identifier><identifier>EISSN: 1530-0307</identifier><identifier>DOI: 10.1038/s41374-018-0091-y</identifier><identifier>PMID: 30068915</identifier><language>eng</language><publisher>New York: Elsevier Inc</publisher><subject>13/1 ; 14/34 ; 14/63 ; 631/80 ; 692/699/75/230 ; 82/1 ; 82/80 ; 82/81 ; Animals ; Antibiotics ; Aorta ; Atrial natriuretic peptide ; Cardiomegaly - etiology ; Cardiomegaly - metabolism ; Cardiomegaly - pathology ; Cardiomyocytes ; Cardiovascular diseases ; Cell size ; Cells, Cultured ; Choline ; Diet ; Disease Models, Animal ; Eutrophication ; Fibrosis ; Gastrointestinal Microbiome - physiology ; Health risks ; Heart ; Hypertrophy ; Inhibition ; Intestinal microflora ; Laboratory Medicine ; Male ; Medicine ; Medicine &amp; Public Health ; Methylamines - antagonists &amp; inhibitors ; Methylamines - metabolism ; Methylamines - toxicity ; Microorganisms ; Myocytes, Cardiac - drug effects ; Myocytes, Cardiac - metabolism ; Myocytes, Cardiac - pathology ; Myosin ; Nutrients ; Pathology ; Pharmacology ; Rats ; Rats, Sprague-Dawley ; Rodents ; Signal Transduction ; Smad3 protein ; Smad3 Protein - antagonists &amp; inhibitors ; Smad3 Protein - metabolism ; Transforming Growth Factor beta1 - metabolism ; Trimethylamine</subject><ispartof>Laboratory investigation, 2019-03, Vol.99 (3), p.346-357</ispartof><rights>2018 United States &amp; Canadian Academy of Pathology</rights><rights>United States &amp; Canadian Academy of Pathology 2018</rights><rights>Copyright Nature Publishing Group Mar 2019</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c581t-fb1e67581e377528aef3154c9bc35a6ddf33329163c98bd9d23670a600f2893</citedby><cites>FETCH-LOGICAL-c581t-fb1e67581e377528aef3154c9bc35a6ddf33329163c98bd9d23670a600f2893</cites><orcidid>0000-0002-6962-1169</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,782,786,27931,27932</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30068915$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Li, Zehua</creatorcontrib><creatorcontrib>Wu, Zhiye</creatorcontrib><creatorcontrib>Yan, Jianyun</creatorcontrib><creatorcontrib>Liu, Hailin</creatorcontrib><creatorcontrib>Liu, Qicai</creatorcontrib><creatorcontrib>Deng, Yi</creatorcontrib><creatorcontrib>Ou, Caiwen</creatorcontrib><creatorcontrib>Chen, Minsheng</creatorcontrib><title>Gut microbe-derived metabolite trimethylamine N-oxide induces cardiac hypertrophy and fibrosis</title><title>Laboratory investigation</title><addtitle>Lab Invest</addtitle><addtitle>Lab Invest</addtitle><description>Trimethylamine N-oxide (TMAO), a gut microbe-derived metabolite of dietary choline and other trimethylamine-containing nutrients, has been linked to increased cardiovascular disease risk. 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It is unknown whether TMAO plays a role in the development of cardiac hypertrophy. Transverse aortic constriction (TAC) was performed to induce cardiac hypertrophy in Sprague-Dawley (SD) rats. We observed that TMAO levels were significantly elevated in SD rats after 6 weeks of TAC, suggesting the potential role of TMAO in regulating cardiac hypertrophy. In cultured cardiomyocytes, TMAO treatment stimulated cardiac hypertrophy, as indicated by increased cell area of cardiomyocytes and expression of hypertrophic markers including atrial natriuretic peptide (ANP) and beta-myosin heavy chain (β-MHC). Additionally, TMAO treatment induced cardiac hypertrophy and cardiac fibrosis in SD rats. Reducing TMAO synthesis by antibiotics (Abs) attenuated TAC-induced cardiac hypertrophy and fibrosis. Furthermore, pharmacological inhibition of Smad3 by SIS3 significantly reduced the expression of ANP and β-MHC, and cardiomyocyte cell size in TMAO-treated group. 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subjects 13/1
14/34
14/63
631/80
692/699/75/230
82/1
82/80
82/81
Animals
Antibiotics
Aorta
Atrial natriuretic peptide
Cardiomegaly - etiology
Cardiomegaly - metabolism
Cardiomegaly - pathology
Cardiomyocytes
Cardiovascular diseases
Cell size
Cells, Cultured
Choline
Diet
Disease Models, Animal
Eutrophication
Fibrosis
Gastrointestinal Microbiome - physiology
Health risks
Heart
Hypertrophy
Inhibition
Intestinal microflora
Laboratory Medicine
Male
Medicine
Medicine & Public Health
Methylamines - antagonists & inhibitors
Methylamines - metabolism
Methylamines - toxicity
Microorganisms
Myocytes, Cardiac - drug effects
Myocytes, Cardiac - metabolism
Myocytes, Cardiac - pathology
Myosin
Nutrients
Pathology
Pharmacology
Rats
Rats, Sprague-Dawley
Rodents
Signal Transduction
Smad3 protein
Smad3 Protein - antagonists & inhibitors
Smad3 Protein - metabolism
Transforming Growth Factor beta1 - metabolism
Trimethylamine
title Gut microbe-derived metabolite trimethylamine N-oxide induces cardiac hypertrophy and fibrosis
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