scholarly journals What Is the Role of Gut Microbiota in Obesity Prevalence? A Few Words about Gut Microbiota and Its Association with Obesity and Related Diseases

2021 ◽  
Vol 10 (1) ◽  
pp. 52
Author(s):  
Julita Tokarek ◽  
Joanna Gadzinowska ◽  
Ewelina Młynarska ◽  
Beata Franczyk ◽  
Jacek Rysz
Keyword(s):  
Gut Microbiota ◽  
Molecular Mechanisms ◽  
Obesity Prevalence ◽  
Microbiome Composition ◽  
Obstructive Sleep ◽  
Genus Lactobacillus ◽  
Prevalence Of Obesity ◽  
Lifestyle Disease ◽  
The Impact

Obesity is becoming the most dangerous lifestyle disease of our time, and its effects are already being observed in both developed and developing countries. The aim of this study was to investigate the impact of gut microbiota on the prevalence of obesity and associated morbidities, taking into consideration underlying molecular mechanisms. In addition to exploring the relationship between obesity and fecal microorganisms with their metabolites, the study also focused on the factors that would be able to stimulate growth and remodeling of microbiota. Assessed articles were carefully classified according to a predetermined criterion and were critically appraised and used as a basis for conclusions. The considered articles and reviews acknowledge that intestinal microbiota forms a multifunctional system that might significantly affect human homeostasis. It has been proved that alterations in the gut microbiota are found in obese and metabolically diseased patients. The imbalance of microbiome composition, such as changes in Bacteroidetes/Firmicutes ratio and presence of different species of genus Lactobacillus, might promote obesity and comorbidities (type 2 diabetes mellitus, hypertension, dyslipidemia, depression, obstructive sleep apnea). However, there are also studies that contradict this theory. Therefore, further well-designed studies are needed to improve the knowledge about the influence of microbiota, its metabolites, and probiotics on obesity.

scholarly journals Gut Microbiome Modulation Based on Probiotic Application for Anti-Obesity: A Review on Efficacy and Validation

2019 ◽  
Vol 7 (10) ◽  
pp. 456 ◽  
Author(s):  
Kaliyan Barathikannan ◽  
Ramachandran Chelliah ◽  
Momna Rubab ◽  
Eric Banan-Mwine Daliri ◽  
Fazle Elahi ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Gut Microbiome ◽  
Molecular Mechanisms ◽  
Short Chain Fatty Acids ◽  
Genetic Profile ◽  
Fecal Transplantation ◽  
Intestinal Microbes ◽  
Prevalence Of Obesity ◽  
Future Direction ◽  
The Impact

The growing prevalence of obesity has become an important problem worldwide as obesity has several health risks. Notably, factors such as excessive food consumption, a sedentary way of life, high sugar consumption, a fat-rich diet, and a certain genetic profile may lead to obesity. The present review brings together recent advances regarding the significance of interventions involving intestinal gut bacteria and host metabolic phenotypes. We assess important biological molecular mechanisms underlying the impact of gut microbiota on hosts including bile salt metabolism, short-chain fatty acids, and metabolic endotoxemia. Some previous studies have shown a link between microbiota and obesity, and associated disease reports have been documented. Thus, this review focuses on obesity and gut microbiota interactions and further develops the mechanism of the gut microbiome approach related to human obesity. Specifically, we highlight several alternative diet treatments including dietary changes and supplementation with probiotics. The future direction or comparative significance of fecal transplantation, synbiotics, and metabolomics as an approach to the modulation of intestinal microbes is also discussed.

scholarly journals Precision Nutrition and the Microbiome Part II: Potential Opportunities and Pathways to Commercialisation

Nutrients ◽  
2019 ◽  
Vol 11 (7) ◽  
pp. 1468 ◽  
Author(s):  
Mills ◽  
Lane ◽  
Smith ◽  
Grimaldi ◽  
Ross ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Dietary Advice ◽  
Scientific Validity ◽  
Microbiome Composition ◽  
Current State ◽  
Prevention And Health Promotion ◽  
Dietary Components ◽  
State Of The Science ◽  
The Impact

Modulation of the human gut microbiota through probiotics, prebiotics and dietary fibre are recognised strategies to improve health and prevent disease. Yet we are only beginning to understand the impact of these interventions on the gut microbiota and the physiological consequences for the human host, thus forging the way towards evidence-based scientific validation. However, in many studies a percentage of participants can be defined as ‘non-responders’ and scientists are beginning to unravel what differentiates these from ‘responders;’ and it is now clear that an individual’s baseline microbiota can influence an individual’s response. Thus, microbiome composition can potentially serve as a biomarker to predict responsiveness to interventions, diets and dietary components enabling greater opportunities for its use towards disease prevention and health promotion. In Part I of this two-part review, we reviewed the current state of the science in terms of the gut microbiota and the role of diet and dietary components in shaping it and subsequent consequences for human health. In Part II, we examine the efficacy of gut-microbiota modulating therapies at different life stages and their potential to aid in the management of undernutrition and overnutrition. Given the significance of an individual’s gut microbiota, we investigate the feasibility of microbiome testing and we discuss guidelines for evaluating the scientific validity of evidence for providing personalised microbiome-based dietary advice. Overall, this review highlights the potential value of the microbiome to prevent disease and maintain or promote health and in doing so, paves the pathway towards commercialisation.

scholarly journals Recipe for a Healthy Gut: Intake of Unpasteurised Milk Is Associated with Increased Lactobacillus Abundance in the Human Gut Microbiome

Nutrients ◽  
2020 ◽  
Vol 12 (5) ◽  
pp. 1468
Author(s):  
Mary I. Butler ◽  
Thomaz F. S. Bastiaanssen ◽  
Caitriona Long-Smith ◽  
Kirsten Berding ◽  
Sabrina Morkl ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Gut Microbiome ◽  
Dairy Products ◽  
Human Gut ◽  
Microbiome Composition ◽  
Organic Farm ◽  
Functional Richness ◽  
Genus Lactobacillus ◽  
The Impact ◽  
Milk And Dairy Products

Introduction: The gut microbiota plays a role in gut–brain communication and can influence psychological functioning. Diet is one of the major determinants of gut microbiota composition. The impact of unpasteurised dairy products on the microbiota is unknown. In this observational study, we investigated the effect of a dietary change involving intake of unpasteurised dairy on gut microbiome composition and psychological status in participants undertaking a residential 12-week cookery course on an organic farm. Methods: Twenty-four participants completed the study. The majority of food consumed during their stay originated from the organic farm itself and included unpasteurised milk and dairy products. At the beginning and end of the course, participants provided faecal samples and completed self-report questionnaires on a variety of parameters including mood, anxiety and sleep. Nutrient intake was monitored with a food frequency questionnaire. Gut microbiota analysis was performed with 16S rRNA gene sequencing. Additionally, faecal short chain fatty acids (SCFAs) were measured. Results: Relative abundance of the genus Lactobacillus increased significantly between pre- and post-course time points. This increase was associated with participants intake of unpasteurised milk and dairy products. An increase in the faecal SCFA, valerate, was observed along with an increase in the functional richness of the microbiome profile, as determined by measuring the predictive neuroactive potential using a gut–brain module approach. Conclusions: While concerns in relation to safety need to be considered, intake of unpasteurised milk and dairy products appear to be associated with the growth of the probiotic bacterial genus, Lactobacillus, in the human gut. More research is needed on the effect of dietary changes on gut microbiome composition, in particular in relation to the promotion of bacterial genera, such as Lactobacillus, which are recognised as being beneficial for a range of physical and mental health outcomes.

Vitamin D and Sleep Regulation: Is there a Role for Vitamin D?

2020 ◽  
Vol 26 (21) ◽  
pp. 2492-2496 ◽  
Author(s):  
Fiammetta Romano ◽  
Giovanna Muscogiuri ◽  
Elea Di Benedetto ◽  
Volha V. Zhukouskaya ◽  
Luigi Barrea ◽  
...  
Keyword(s):  
Vitamin D ◽  
Sleep Disorders ◽  
Vitamin D Deficiency ◽  
Sleep Apnea Syndrome ◽  
Regulatory Mechanisms ◽  
Sleep Regulation ◽  
Vitamin D Receptors ◽  
Obstructive Sleep ◽  
The Impact

Background: Vitamin D exerts multiple pleiotropic effects beyond its role in calcium-phosphate metabolism. Growing evidence suggests an association between hypovitaminosis D and sleep disorders, thus increasing the interest in the role of this vitamin in the regulatory mechanisms of the sleep-wake cycle. Objective: The study aimed to explore and summarize the current knowledge about the role of vitamin D in sleep regulation and the impact of vitamin D deficiency on sleep disorders. Methods: The main regulatory mechanisms of vitamin D on sleep are explained in this study. The literature was scanned to identify clinical trials and correlation studies showing an association between vitamin D deficiency and sleep disorders. Results: Vitamin D receptors and the enzymes that control their activation and degradation are expressed in several areas of the brain involved in sleep regulation. Vitamin D is also involved in the pathways of production of Melatonin, the hormone involved in the regulation of human circadian rhythms and sleep. Furthermore, vitamin D can affect sleep indirectly through non-specific pain disorders, correlated with alterations in sleep quality, such as restless legs syndrome and obstructive sleep apnea syndrome. Conclusions: : Vitamin D has both a direct and an indirect role in the regulation of sleep. Although vitamin D deficiency has been associated to sleep disorders, there is still scant evidence to concretely support the role of vitamin D supplementation in the prevention or treatment of sleep disturbances; indeed, more intervention studies are needed to better clarify these aspects.

scholarly journals Insights into the Impact of Microbiota in the Treatment of NAFLD/NASH and Its Potential as a Biomarker for Prognosis and Diagnosis

Biomedicines ◽  
2021 ◽  
Vol 9 (2) ◽  
pp. 145
Author(s):  
Julio Plaza-Díaz ◽  
Patricio Solis-Urra ◽  
Jerónimo Aragón-Vela ◽  
Fernando Rodríguez-Rodríguez ◽  
Jorge Olivares-Arancibia ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Fecal Microbiota Transplantation ◽  
Liver Steatosis ◽  
Intestinal Barrier ◽  
Fecal Microbiota ◽  
Current Treatment ◽  
Immune Defense ◽  
Alcoholic Fatty Liver ◽  
The Impact

Non-alcoholic fatty liver disease (NAFLD) is an increasing cause of chronic liver illness associated with obesity and metabolic disorders, such as hypertension, dyslipidemia, or type 2 diabetes mellitus. A more severe type of NAFLD, non-alcoholic steatohepatitis (NASH), is considered an ongoing global health threat and dramatically increases the risks of cirrhosis, liver failure, and hepatocellular carcinoma. Several reports have demonstrated that liver steatosis is associated with the elevation of certain clinical and biochemical markers but with low predictive potential. In addition, current imaging methods are inaccurate and inadequate for quantification of liver steatosis and do not distinguish clearly between the microvesicular and the macrovesicular types. On the other hand, an unhealthy status usually presents an altered gut microbiota, associated with the loss of its functions. Indeed, NAFLD pathophysiology has been linked to lower microbial diversity and a weakened intestinal barrier, exposing the host to bacterial components and stimulating pathways of immune defense and inflammation via toll-like receptor signaling. Moreover, this activation of inflammation in hepatocytes induces progression from simple steatosis to NASH. In the present review, we aim to: (a) summarize studies on both human and animals addressed to determine the impact of alterations in gut microbiota in NASH; (b) evaluate the potential role of such alterations as biomarkers for prognosis and diagnosis of this disorder; and (c) discuss the involvement of microbiota in the current treatment for NAFLD/NASH (i.e., bariatric surgery, physical exercise and lifestyle, diet, probiotics and prebiotics, and fecal microbiota transplantation).

The impact of Traditional Chinese Medicine on mitophagy in disease models

2021 ◽  
Vol 27 ◽  
Author(s):  
Li-Ping Yu ◽  
Ting-Ting Shi ◽  
Yan-Qin Li ◽  
Jian-Kang Mu ◽  
Ya-Qin Yang ◽  
...  
Keyword(s):  
Chinese Medicine ◽  
Traditional Chinese Medicine ◽  
Molecular Mechanisms ◽  
Human Diseases ◽  
Regulatory Mechanisms ◽  
Disease Models ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship

: Mitophagy plays an important role in maintaining mitochondrial quality and cell homeostasis through the degradation of damaged, aged, and dysfunctional mitochondria and misfolded proteins. Many human diseases, particularly neurodegenerative diseases, are related to disorders of mitochondrial phagocytosis. Exploring the regulatory mechanisms of mitophagy is of great significance for revealing the molecular mechanisms underlying the related diseases. Herein, we summarize the major mechanisms of mitophagy, the relationship of mitophagy with human diseases, and the role of traditional Chinese medicine (TCM) in mitophagy. These discussions enhance our knowledge of mitophagy and its potential therapeutic targets using TCM.

scholarly journals Intestinal microbiota, obesity and prebiotics

2015 ◽  
Vol 64 (2) ◽  
pp. 93-100 ◽  
Author(s):  
R. BARCZYNSKA ◽  
K. BANDURSKA ◽  
K. SLIZEWSKA ◽  
M. LITWIN ◽  
M. SZALECKI ◽  
...  
Keyword(s):  
Body Weight ◽  
Gut Microbiota ◽  
Disease Risk ◽  
Global Scale ◽  
Weight One ◽  
Prevalence Of Obesity ◽  
Normal Body Weight ◽  
Healthy Body Weight ◽  
Treatment Of Obesity

Over the past few decades there has been a significant increase in the prevalence of obesity in both children and adults. Obesity is a disease that has reached epidemic levels on a global scale. The development of obesity is associated with both environmental and genetic factors. Recent studies indicate that intestinal microorganisms play an important function in maintaining normal body weight. One of the objectives in the gut microbiota research is to determine the role it plays and can it be a reliable biomarker of disease risk, including the predisposition to obesity. This article discusses (1) the role of prebiotics and gut microbiota in maintaining a healthy body weight and (2) potential influence on the gut microbiota in the prevention and treatment of obesity.

scholarly journals The gut-microbiota-brain axis in autism: what Drosophila models can offer?

2021 ◽  
Vol 13 (1) ◽  
Author(s):  
Safa Salim ◽  
Ayesha Banu ◽  
Amira Alwa ◽  
Swetha B. M. Gowda ◽  
Farhan Mohammad
Keyword(s):  
Gut Microbiota ◽  
Gut Microbiome ◽  
Neurological Disorders ◽  
Autism Spectrum ◽  
Brain Disorders ◽  
Mediated Communication ◽  
The Impact ◽  
Insight Into ◽  
Drosophila Models

AbstractThe idea that alterations in gut-microbiome-brain axis (GUMBA)-mediated communication play a crucial role in human brain disorders like autism remains a topic of intensive research in various labs. Gastrointestinal issues are a common comorbidity in patients with autism spectrum disorder (ASD). Although gut microbiome and microbial metabolites have been implicated in the etiology of ASD, the underlying molecular mechanism remains largely unknown. In this review, we have summarized recent findings in human and animal models highlighting the role of the gut-brain axis in ASD. We have discussed genetic and neurobehavioral characteristics of Drosophila as an animal model to study the role of GUMBA in ASD. The utility of Drosophila fruit flies as an amenable genetic tool, combined with axenic and gnotobiotic approaches, and availability of transgenic flies may reveal mechanistic insight into gut-microbiota-brain interactions and the impact of its alteration on behaviors relevant to neurological disorders like ASD.

Abstract 17019: Obesity and Cardiovascular Health in Young American Adults

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Sarabjeet S Suri ◽  
Vibhu Parcha ◽  
Rajat Kalra ◽  
Garima Arora ◽  
Pankaj Arora
Keyword(s):  
Risk Factors ◽  
Young Adults ◽  
Cardiovascular Health ◽  
Piecewise Linear ◽  
The United States ◽  
Obesity Prevalence ◽  
Logistic Regression Models ◽  
Prevalence Of Obesity ◽  
Adjusted Logistic Regression ◽  
The Impact

Background: The growing epidemic of obesity in the United States (US) is associated with cardiovascular (CV) morbidity and mortality. We evaluated the impact of the increasing obesity prevalence on the CV health of young American adults. Methods: The age-adjusted weighted prevalence of hypertension, diabetes, and hypercholesterolemia was estimated from the 2008-2018 National Health and Nutrition Examination Survey (NHANES) in American adults aged 18-44 years, stratified by the presence of obesity. The trends were evaluated using a piecewise linear regression approach. The odds for CV risk factors were estimated using multivariable-adjusted logistic regression models. Results: Among 14,919 young adults, the prevalence of obesity was 33.9% (95% CI: 32.6-35.3%). Obese young adults were more likely to be non-Hispanic Blacks and in lower socioeconomic and educational attainment strata (p<0.05 for all). Obese young adults had a greater risk of having hypertension (adjusted odds ratio [aOR]: 3.0 [95% CI: 2.7-3.4]), diabetes (aOR: 4.3 [95% CI: 3.3-5.6]), and hyperlipidemia (aOR: 1.47 [95% CI: 1.3-1.7]). Among obese, hypertension increased from 36.5% (33.9-39.1%) in 2007-2010 to 39.4% (35.6-43.1%) in 2015-2018 (p= 0.07) and diabetes increased from 4.7% (3.6-5.8%) in 2007-2010 to 7.1% (5.3-9.0%) in 2015-2018 (p=0.11). A modest increase in diabetes was seen in non-obese individuals ( Table ). Hypercholesterolemia prevalence remained unchanged from 12.6% (95% CI: 10.6-14.7%) 2007-2010 to 10.9% (95% CI: 9.0-12.8%) in 2015-2018 (p=0.27) among obese young adults. Non-obese young adults showed a decline in hypercholesterolemia from 9.5% (95% CI: 8.0-11.0%) in 2007- 2010 to 7.1% (95% CI: 5.8-8.4%) in 2015-2018 (p=0.002). Conclusions: Nearly one-in-every three young American adults have obesity, which is accompanied by a two-fold higher prevalence of CV risk factors. The CV morbidity in young adults is expected to increase with an increasing prevalence of obesity..

Role of the gut microbiota in airway immunity and host defense against respiratory infections

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Maike Willers ◽  
Dorothee Viemann
Keyword(s):  
Gut Microbiota ◽  
Host Defense ◽  
Gut Microbiome ◽  
Respiratory Infections ◽  
Current Knowledge ◽  
Viral Pathogens ◽  
Commensal Microbiota ◽  
Enhanced Resistance ◽  
The Impact

Abstract Colonization of the intestine with commensal bacteria is known to play a major role in the maintenance of human health. An altered gut microbiome is associated with various ensuing diseases including respiratory diseases. Here, we summarize current knowledge on the impact of the gut microbiota on airway immunity with a focus on consequences for the host defense against respiratory infections. Specific gut commensal microbiota compositions and functions are depicted that mediate protection against respiratory infections with bacterial and viral pathogens. Lastly, we highlight factors that have imprinting effects on the establishment of the gut microbiota early in life and are potentially relevant in the context of respiratory infections. Deepening our understanding of these relationships will allow to exploit the knowledge on how gut microbiome maturation needs to be modulated to ensure lifelong enhanced resistance towards respiratory infections.

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