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Design of the GutHeart-targeting gut microbiota to treat heart failure-trial: a Phase II, randomized clinical trial.

ABSTRACT: AIMS:Heart failure (HF) is a multifactorial disease. Current treatments target only a fraction of the putative pathophysiological pathways. In patients with HF, reduced cardiac output and congestion cause increased gut wall permeability. It has been suggested that leakage of microbial products is detrimental to the heart, at least partly through activation of systemic inflammatory pathways, which again could promote gut leakage. Whether manipulating the gut microbiota can improve cardiac function in patients with HF remains unknown. We aim to evaluate the effect of drugs targeting the gut microbiota on left ventricular function, quality of life, and functional capacity, as well as on markers of gut leakage and inflammation, in stable patients with HF with reduced ejection fraction. METHODS AND RESULTS:GutHeart is a randomized, open-label, controlled trial. Four centres will randomize 150 patients with stable HF and a left ventricular ejection fraction <40% to receive the antibiotic rifaximin, the probiotic yeast Saccharomyces boulardii (ATCC 74012), or no treatment (control) in a 1:1:1 fashion. Treatment will last for 3 months. The primary endpoint is baseline-adjusted left ventricular ejection fraction as measured by echocardiography after 3 months. A further follow-up 6 months after randomization will be undertaken. CONCLUSIONS:This trial is likely to give new insights into important disease processes involving the gut microbiota in HF patients, hereby leading to new potential therapeutic strategies to prevent and down-regulate the inflammation seen in these patients.

SUBMITTER: Mayerhofer CCK

PROVIDER: S-EPMC6165929 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature

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Design of the GutHeart-targeting gut microbiota to treat heart failure-trial: a Phase II, randomized clinical trial.

Mayerhofer Cristiane C K CCK Awoyemi Ayodeji O AO Moscavitch Samuel D SD Lappegård Knut Tore KT Hov Johannes R JR Aukrust Pål P Hovland Anders A Lorenzo Andrea A Halvorsen Sigrun S Seljeflot Ingebjørg I Gullestad Lars L Trøseid Marius M Broch Kaspar K

ESC heart failure 20180807 5

<h4>Aims</h4>Heart failure (HF) is a multifactorial disease. Current treatments target only a fraction of the putative pathophysiological pathways. In patients with HF, reduced cardiac output and congestion cause increased gut wall permeability. It has been suggested that leakage of microbial products is detrimental to the heart, at least partly through activation of systemic inflammatory pathways, which again could promote gut leakage. Whether manipulating the gut microbiota can improve cardiac ...[more]

PMID: 30088346

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Project description:Introduction: Heart failure with preserved ejection fraction (HFpEF) is associated with disrupted intestinal epithelial function, resulting from intestinal congestion. Intestinal congestion changes the morphology and permeability of the intestinal wall, and it becomes easy for the gut microbiota to change and transfer. Intervention on gut microbiota may become a new target for HFpEF treatment. However, the characteristics of gut microbiota in patients with HFpEF remain unknown. This preliminary report aims to detect the structure of gut microbiota in HFpEF patients so as to explore their characteristic changes, thereby providing a theoretical basis for future research. Methods: This research recruited 30 patients diagnosed with HFpEF and 30 healthy individuals. Stool specimens of research subjects were collected separately, and the microarray analyses of gut microbiota were conducted by Illumina high-throughput DNA sequencing. The differences in gut microbiota composition, alpha diversity, and beta diversity between the two groups were finally obtained. Results: The composition of gut microbiota was significantly different between the two groups. At the phylum classification level, the abundance of Synergistetes tended to be higher in the HFpEF group (P = 0.012). At genus classification level, the abundance of Butyricicoccus (P < 0.001), Sutterella (P = 0.004), Lachnospira (P = 0.003), and Ruminiclostridium (P = 0.009) in the HFpEF group were lower, while the abundance of Enterococcus (P < 0.001) and Lactobacillus (P = 0.005) were higher. According to the Chao index of alpha diversity analysis, HFpEF patients showed a nominally significant lower species richness when compared with controls (P = 0.046). However, there was no statistical difference in the Shannon index (P = 0.159) and Simpson index (P = 0.495), indicating that there was no difference in species diversity between the two groups. Beta diversity analysis revealed a highly significant separation of HFpEF patients and controls. Conclusions: An imbalance in the gut microbiota of HFpEF patients was observed. Patients with HFpEF have an increased abundance of microbiota associated with inflammation and a decreased abundance of microbiota associated with anti-inflammatory effects in the gut environment. In line with that, the species richness of gut microbiota in HFpEF patients tended to be lower.

Dataset Information

Design of the GutHeart-targeting gut microbiota to treat heart failure-trial: a Phase II, randomized clinical trial.

Publications

Design of the GutHeart-targeting gut microbiota to treat heart failure-trial: a Phase II, randomized clinical trial.

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