High Fibre Diet and Acetate Supplementation Change the Gut Microbiota and Prevent the Development of Hypertension and Heart Failure in DOCA-Salt Hypertensive Mice

Francine Z. Marques, Erin Nelson, Po Yin Chu, Duncan Horlock, April Fiedler, Mark Ziemann, Jian K. Tan, Sanjaya Kuruppu, Niwanthi W. Rajapakse, Assam El-Osta, Charles R. Mackay, David M. Kaye

Research output: Contribution to journalArticleResearchpeer-review

128 Citations (Scopus)

Abstract

BACKGROUND—: Dietary intake of fruit and vegetables is associated with lower incidence of hypertension, but the mechanisms involved have not been elucidated. Here we evaluated the effect of a high fibre diet and supplementation with the short-chain fatty acid (SFCA) acetate on the gut microbiota and the prevention of cardiovascular disease. METHODS—: Gut microbiome, cardiorenal structure/function and blood pressure were examined in sham and mineralocorticoid-excess treated mice with a control diet, high fibre diet or acetate supplementation. We also determined the renal and cardiac transcriptome of mice treated with the different diets. RESULTS—: We found that high consumption of fibre modified the gut microbiota populations and increased the abundance of acetate-producing bacteria, independently of mineralocorticoid-excess. Both fibre and acetate decreased gut dysbiosis, measured by the ratio of Firmicutes to Bacteroidetes, and increased the prevalence of Bacteroides acidifaciens. Compared to mineralocorticoid-excess mice fed a control diet, both high fibre diet and acetate supplementation significantly reduced systolic and diastolic blood pressure, cardiac fibrosis and left ventricular hypertrophy. Acetate had similar effects and also markedly reduced renal fibrosis. Transcriptome analyses showed that the protective effects of high fibre and acetate were accompanied by the down-regulation of cardiac and renal Egr1, a master cardiovascular regulator involved in cardiac hypertrophy, cardiorenal fibrosis and inflammation. We also observed the up-regulation of a network of genes involved in circadian rhythm in both tissues, while down-regulated the renin-angiotensin system in the kidney and mitogen-activated protein kinases (MAPK) signalling in the heart. CONCLUSIONS—: A diet high in fibre led to changes in the gut microbiota which played a protective role in the development of cardiovascular disease. The favourable effects of fibre may be explained by the generation and distribution of one of the main metabolites of the gut microbiota, the SCFA acetate. Acetate effected several molecular changes associated with improved cardiovascular health and function.

Original languageEnglish
Pages (from-to)964-977
Number of pages14
JournalCirculation
Volume135
Issue number10
DOIs
Publication statusPublished - 7 Mar 2017

Keywords

  • heart failure
  • hypertension
  • high blood pressure
  • acetate
  • short-chain fatty acids
  • gut microbiome
  • gut microbiota
  • left ventricular fibrosis

Cite this

@article{497645759db548318f2341d9370c9ba7,
title = "High Fibre Diet and Acetate Supplementation Change the Gut Microbiota and Prevent the Development of Hypertension and Heart Failure in DOCA-Salt Hypertensive Mice",
abstract = "BACKGROUND—: Dietary intake of fruit and vegetables is associated with lower incidence of hypertension, but the mechanisms involved have not been elucidated. Here we evaluated the effect of a high fibre diet and supplementation with the short-chain fatty acid (SFCA) acetate on the gut microbiota and the prevention of cardiovascular disease. METHODS—: Gut microbiome, cardiorenal structure/function and blood pressure were examined in sham and mineralocorticoid-excess treated mice with a control diet, high fibre diet or acetate supplementation. We also determined the renal and cardiac transcriptome of mice treated with the different diets. RESULTS—: We found that high consumption of fibre modified the gut microbiota populations and increased the abundance of acetate-producing bacteria, independently of mineralocorticoid-excess. Both fibre and acetate decreased gut dysbiosis, measured by the ratio of Firmicutes to Bacteroidetes, and increased the prevalence of Bacteroides acidifaciens. Compared to mineralocorticoid-excess mice fed a control diet, both high fibre diet and acetate supplementation significantly reduced systolic and diastolic blood pressure, cardiac fibrosis and left ventricular hypertrophy. Acetate had similar effects and also markedly reduced renal fibrosis. Transcriptome analyses showed that the protective effects of high fibre and acetate were accompanied by the down-regulation of cardiac and renal Egr1, a master cardiovascular regulator involved in cardiac hypertrophy, cardiorenal fibrosis and inflammation. We also observed the up-regulation of a network of genes involved in circadian rhythm in both tissues, while down-regulated the renin-angiotensin system in the kidney and mitogen-activated protein kinases (MAPK) signalling in the heart. CONCLUSIONS—: A diet high in fibre led to changes in the gut microbiota which played a protective role in the development of cardiovascular disease. The favourable effects of fibre may be explained by the generation and distribution of one of the main metabolites of the gut microbiota, the SCFA acetate. Acetate effected several molecular changes associated with improved cardiovascular health and function.",
keywords = "heart failure, hypertension, high blood pressure, acetate, short-chain fatty acids, gut microbiome, gut microbiota, left ventricular fibrosis",
author = "Marques, {Francine Z.} and Erin Nelson and Chu, {Po Yin} and Duncan Horlock and April Fiedler and Mark Ziemann and Tan, {Jian K.} and Sanjaya Kuruppu and Rajapakse, {Niwanthi W.} and Assam El-Osta and Mackay, {Charles R.} and Kaye, {David M.}",
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pages = "964--977",
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High Fibre Diet and Acetate Supplementation Change the Gut Microbiota and Prevent the Development of Hypertension and Heart Failure in DOCA-Salt Hypertensive Mice. / Marques, Francine Z.; Nelson, Erin; Chu, Po Yin; Horlock, Duncan; Fiedler, April; Ziemann, Mark; Tan, Jian K.; Kuruppu, Sanjaya; Rajapakse, Niwanthi W.; El-Osta, Assam; Mackay, Charles R.; Kaye, David M.

In: Circulation, Vol. 135, No. 10, 07.03.2017, p. 964-977.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - High Fibre Diet and Acetate Supplementation Change the Gut Microbiota and Prevent the Development of Hypertension and Heart Failure in DOCA-Salt Hypertensive Mice

AU - Marques, Francine Z.

AU - Nelson, Erin

AU - Chu, Po Yin

AU - Horlock, Duncan

AU - Fiedler, April

AU - Ziemann, Mark

AU - Tan, Jian K.

AU - Kuruppu, Sanjaya

AU - Rajapakse, Niwanthi W.

AU - El-Osta, Assam

AU - Mackay, Charles R.

AU - Kaye, David M.

PY - 2017/3/7

Y1 - 2017/3/7

N2 - BACKGROUND—: Dietary intake of fruit and vegetables is associated with lower incidence of hypertension, but the mechanisms involved have not been elucidated. Here we evaluated the effect of a high fibre diet and supplementation with the short-chain fatty acid (SFCA) acetate on the gut microbiota and the prevention of cardiovascular disease. METHODS—: Gut microbiome, cardiorenal structure/function and blood pressure were examined in sham and mineralocorticoid-excess treated mice with a control diet, high fibre diet or acetate supplementation. We also determined the renal and cardiac transcriptome of mice treated with the different diets. RESULTS—: We found that high consumption of fibre modified the gut microbiota populations and increased the abundance of acetate-producing bacteria, independently of mineralocorticoid-excess. Both fibre and acetate decreased gut dysbiosis, measured by the ratio of Firmicutes to Bacteroidetes, and increased the prevalence of Bacteroides acidifaciens. Compared to mineralocorticoid-excess mice fed a control diet, both high fibre diet and acetate supplementation significantly reduced systolic and diastolic blood pressure, cardiac fibrosis and left ventricular hypertrophy. Acetate had similar effects and also markedly reduced renal fibrosis. Transcriptome analyses showed that the protective effects of high fibre and acetate were accompanied by the down-regulation of cardiac and renal Egr1, a master cardiovascular regulator involved in cardiac hypertrophy, cardiorenal fibrosis and inflammation. We also observed the up-regulation of a network of genes involved in circadian rhythm in both tissues, while down-regulated the renin-angiotensin system in the kidney and mitogen-activated protein kinases (MAPK) signalling in the heart. CONCLUSIONS—: A diet high in fibre led to changes in the gut microbiota which played a protective role in the development of cardiovascular disease. The favourable effects of fibre may be explained by the generation and distribution of one of the main metabolites of the gut microbiota, the SCFA acetate. Acetate effected several molecular changes associated with improved cardiovascular health and function.

AB - BACKGROUND—: Dietary intake of fruit and vegetables is associated with lower incidence of hypertension, but the mechanisms involved have not been elucidated. Here we evaluated the effect of a high fibre diet and supplementation with the short-chain fatty acid (SFCA) acetate on the gut microbiota and the prevention of cardiovascular disease. METHODS—: Gut microbiome, cardiorenal structure/function and blood pressure were examined in sham and mineralocorticoid-excess treated mice with a control diet, high fibre diet or acetate supplementation. We also determined the renal and cardiac transcriptome of mice treated with the different diets. RESULTS—: We found that high consumption of fibre modified the gut microbiota populations and increased the abundance of acetate-producing bacteria, independently of mineralocorticoid-excess. Both fibre and acetate decreased gut dysbiosis, measured by the ratio of Firmicutes to Bacteroidetes, and increased the prevalence of Bacteroides acidifaciens. Compared to mineralocorticoid-excess mice fed a control diet, both high fibre diet and acetate supplementation significantly reduced systolic and diastolic blood pressure, cardiac fibrosis and left ventricular hypertrophy. Acetate had similar effects and also markedly reduced renal fibrosis. Transcriptome analyses showed that the protective effects of high fibre and acetate were accompanied by the down-regulation of cardiac and renal Egr1, a master cardiovascular regulator involved in cardiac hypertrophy, cardiorenal fibrosis and inflammation. We also observed the up-regulation of a network of genes involved in circadian rhythm in both tissues, while down-regulated the renin-angiotensin system in the kidney and mitogen-activated protein kinases (MAPK) signalling in the heart. CONCLUSIONS—: A diet high in fibre led to changes in the gut microbiota which played a protective role in the development of cardiovascular disease. The favourable effects of fibre may be explained by the generation and distribution of one of the main metabolites of the gut microbiota, the SCFA acetate. Acetate effected several molecular changes associated with improved cardiovascular health and function.

KW - heart failure

KW - hypertension

KW - high blood pressure

KW - acetate

KW - short-chain fatty acids

KW - gut microbiome

KW - gut microbiota

KW - left ventricular fibrosis

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U2 - 10.1161/CIRCULATIONAHA.116.024545

DO - 10.1161/CIRCULATIONAHA.116.024545

M3 - Article

VL - 135

SP - 964

EP - 977

JO - Circulation

JF - Circulation

SN - 0009-7322

IS - 10

ER -