Microorganisms and cardiovascular diseases: importance of gut bacteria (2024)

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THE INFLUENCE OF THE INTESTINAL MICROBIOTA ON CARDIOVASCULAR HEALTH: AN INTEGRATIVE REVIEW (Atena Editora)

THE INFLUENCE OF THE INTESTINAL MICROBIOTA ON CARDIOVASCULAR HEALTH: AN INTEGRATIVE REVIEW (Atena Editora)

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Introduction: The gut microbiota plays a key role in human health, influencing various physiological processes in cardiovascular health. Objective: To analyze the scientific research that investigates the relationship between the intestinal microbiota and cardiovascular health, in particular the existing evidence on how the composition of the intestinal microbiota affects the development of cardiovascular diseases. Methodology: Articles relevant to the work were selected, including clinical trial, meta-analysis, literature review and systematic literature review, through the platform's data base PubMed, using the keywords "Gut microbiota" and "Heart disease". Results: The studies investigated different aspects of the relationship between intestinal microbiota and cardiovascular health, including the influence of intestinal dysbiosis, microbial diversity, metabolites produced by the microbiota and the immunological mechanisms involved. The results suggest that alterations in the composition of the intestinal microbiota may be associated with an increased risk of cardiovascular diseases, including atherosclerosis, hypertension and ischemic heart disease. Conclusion: Based on the integrative literature review, there is growing evidence that the gut microbiota plays a relevant role in cardiovascular health. Understanding the mechanisms involved in this relationship can provide important insights for the development of new therapeutic strategies and interventions based on the modulation of the intestinal microbiota. However, further studies are needed to fully elucidate the underlying mechanisms and establish effective interventions to improve cardiovascular health through manipulation of the gut microbiota.

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Cardiovascular disease (CVD) continues to be the major cause of death in the developed countries. Moreover, the cardiovascular risk factors leading towards the development of CVD, mainly type 2 diabetes and obesity, are on the rise. The current preventive and therapeutic management, centred on the control of traditional risk factors, is clearly not enough to stop this pandemic. Therefore, the search for new biomarkers in CVD is a priority in most clinical research programs. Currently, interest in gut microbiota has peaked due to its association with cardiovascular and non-cardiovascular diseases. The present review considers the current situation regarding the influence of gut microbiota on CVD and particularly, its influence on the main traditional risk factors that lead to CVD, such as lipids, diabetes, hypertension and obesity.

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The gut microbiome encompasses trillions of residing microbes, mainly bacteria, which play a crucial role in maintaining the physiological and metabolic health of the host. The gut microbiome has been associated with several diseases, including cardiovascular disease (CVD). A growing body of evidence suggests that an altered gut environment and gut-microbiome-derived metabolites are associated with CVD events. The gut microbiome communicates with host physiology through different mechanisms, including trimethylamine N-oxide generation, primary and secondary bile acid metabolism pathways, and short-chain fatty acids production. The main focus of this review is to understand the association of the gut microbiome with CVD and its implications on the interactions between the gut microbiome and the host. Manipulation of the gut microbiome through specific dietary intervention is a simple approach to identifying novel targets for therapy or better dietary recommendations, and new preventi...

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Dysbiosis—An Etiological Factor for Cardiovascular Diseases and the Therapeutic Benefits of Gut Microflora

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The human gut is colonized by a variety of microorganisms especially bacteria. There are multiple evidences that gut microflora dysbiosis is a novel risk factor for development of various intestine-related diseases such as irritable bowel syndrome and inflammatory bowel disease as well as nonintestinal diseases including obesity, type II diabetes, and cardiovascular diseases. A mutual relationship among the host’s immune system and the metabolites produced by the gut microflora, including trimethylamine N-oxide (TMAO), short-chain fatty acids (SCFAs), and bile acids, is present. Alterations in the host-microbial interaction lead to impaired homeostasis and thus contribute towards the activation of several pathways that causes progression of cardiovascular diseases. This review summarizes the role of gut microflora dysbiosis in the development and progression of atherosclerosis, coronary artery disease, and hypertension. Dysbiosis has been implicated in the pathogenesis of atheroscle...

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Microorganisms and cardiovascular diseases: importance of gut bacteria (2024)

FAQs

Microorganisms and cardiovascular diseases: importance of gut bacteria? ›

The composition of gut microbiota plays a significant role in dictating the progression of non-communicable diseases, cancers and CVDs. Gut microbial diversity also dictates blood sugar levels, blood pressure, hormonal regulation and metabolism.

What is the role of the gut microbiome in cardiovascular disease? ›

Once labelled “the forgotten organ”, the gut microbiota has recently been rediscovered and has been found to play key functions in the incidence of ASCVD both directly by contributing to the development of atherosclerosis and indirectly by playing a part in the occurrence of fundamental cardiovascular risk factors.

What is the importance of gut bacteria? ›

Gut bacteria play an important role in human health, such as supplying essential nutrients, synthesizing vitamin K, aiding in the digestion of cellulose, and promoting angiogenesis and enteric nerve function.

How does gut bacteria affect the heart? ›

Right now, scientists believe one link has to do with the compounds gut bacteria produce when they break down certain foods. Having the wrong balance of bugs may mean more byproducts that raise cholesterol levels and harm blood vessels.

What is the emerging role of gut microbiota in cardiovascular diseases? ›

Perturbations in the composition of the gut microbiota is known as 'dysbiosis'. Dysbiosis has been linked to the development and progression of various CVDs. Gut microbiota plays a central role in regulating the energy harvesting process and metabolism in the host.

What is the role of gut microbiota in cardiovascular diseases a comprehensive review? ›

The gut microbiota's function is closely linked to the risk of CVDs. Gut microbiota dysbiosis can lead to impaired mucosal barrier, overactivated inflammation, and immune dysfunction, which are crucial steps in CVD development.

What is the role of the gut microbiome in disease? ›

The gastrointestinal microbiota play a role in host physiology, metabolism and nutrition. An alteration in the gut microbial community is linked to a number of intestinal conditions, including cancer, obesity and a variety of bowel disorders.

What are 3 functions of gut bacteria? ›

The gut commensals predominantly aid in nutrient metabolism, drug metabolism, prevention of colonization of pathogenic microorganisms and in intestinal barrier function.

What are the most important bacteria in the gut? ›

The four dominant bacterial phyla in the human gut are Bacillota (Firmicutes), Bacteroidota, Actinomycetota, and Pseudomonadota. Most bacteria belong to the genera Bacteroides, Clostridium, Faecalibacterium, Eubacterium, Ruminococcus, Peptococcus, Peptostreptococcus, and Bifidobacterium.

What are the 4 reasons why gut health is so important? ›

It is understood that there are links between gut health and:
  • the immune system.
  • mental health.
  • autoimmune diseases.
  • endocrine disorders – such as type 2 diabetes.
  • gastrointestinal disorders – such as irritable bowel syndrome and inflammatory bowel disease.
  • cardiovascular disease.
  • cancer.
  • sleep.
Mar 23, 2023

How does the digestive system affect the cardiovascular system? ›

Nerve impulses are sent to the brain, notifying it of the increased digestive activity. The digestive system even directly stimulates the heart through nerve impulses and chemicals released into the bloodstream. The heart responds by pumping more blood.

What bacteria is associated with heart disease? ›

Two kinds of bacteria cause most cases of bacterial endocarditis. These are staphylococci (staph) and streptococci (strep). You may be at increased risk for bacterial endocarditis if you have certain heart valve defects. This gives the bacteria an easier place to take hold and grow.

How does gut bacteria affect blood pressure? ›

Short chain fatty acids

Some gut bacteria produce these molecules as they digest dietary fiber. After bacteria have produced SCFAs, the host's blood suppy absorbs them. SCFAs affect a range of physiological processes, one of which appears to be blood pressure.

How does gut microbiota affect cardiovascular risk? ›

In particular, the gut microbiota plays a key role in the onset of cardiovascular (CV) disease, including heart failure (HF). In HF, splanchnic hypoperfusion causes intestinal ischemia resulting in the translocation of bacteria and their metabolites into the blood circulation.

What is the role of the gut microbiota in coronary heart disease? ›

The gut microbiota is involved in mediating basic metabolic processes, such as cholesterol metabolism, uric acid metabolism, oxidative stress, and inflammatory reactions, through its metabolites, which can induce the development of atherosclerosis and coronary heart disease.

What are the major human diseases impacted by our gut microbiota? ›

Several major human diseases are associated with an altered gastrointestinal microbiota, for example, obesity, diabetes, cardiovascular disorders, cancer, hypertension, and IBDs (Ding et al., 2019; Nie et al., 2019; Xu et al., 2019) have been discussed individually later in this review.

What is the role of the gut microbiome in the immune system? ›

The microbiota plays a fundamental role on the induction, training and function of the host immune system. In return, the immune system has largely evolved as a means to maintain the symbiotic relationship of the host with these highly diverse and evolving microbes.

What is the role of gut microbiota in metabolic diseases? ›

In the metabolic point of view, gut microbiota can modulate lipid accumulation, lipopolysaccharide content and the production of short-chain fatty acids that affect food intake, inflammatory tone, or insulin signaling.

How could microbiota increase a person's risk for cardiovascular disease? ›

The dysbiosis of the gut disrupts the intestinal barrier, which in turn helps in the translocation of the gut microbiota throughout the entire human body leading to an increased risk of developing CVDs and disrupting the host immune responses leading to inflammation [102,103].

What is the role of the gut microbiome in nutrition and health? ›

The gut microbiome plays a very important role in your health by helping control digestion and benefiting your immune system and many other aspects of health. An imbalance of unhealthy and healthy microbes in the intestines may contribute to weight gain, high blood sugar, high cholesterol and other disorders.

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