scholarly journals Synbiotic supplementation with prebiotic Schizophyllum commune derived β-(1,3/1,6)-glucan and probiotic concoction benefits gut microbiota and its associated metabolic activities

2021 ◽  
Vol 64 (1) ◽  
Author(s):  
Vineet Singh ◽  
Karthika Muthuramalingam ◽  
Young Mee Kim ◽  
Sanggyu Park ◽  
Sung Hong Kim ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Dietary Intervention ◽  
Schizophyllum Commune ◽  
Rrna Gene ◽  
Bacterial Strains ◽  
Dietary Interventions ◽  
Beneficial Effects ◽  
Metabolic Functions ◽  
Synbiotic Supplementation ◽  
Metabolic Activities

AbstractSynbiotics synergistically favors beneficial effects of prebiotics and probiotics towards host metabolic health by modulating gut ecosystem. In this study, we sought to examine the effects of prebiotics (Schizophyllum commune derived β-(1,3/1,6)-glucan), probiotics (concoction made of eight different bacterial strains) and synbiotics (prebiotics + probiotics) on gut microbiota and its associated metabolic functions through 16S rRNA gene sequences analysis. Results showed that probiotics strains used in this study were detected more in the synbiotic and probiotic treatments, while prebiotic dietary intervention increased the total bacterial abundance and metabolisms related to host immune strengthening. Probiotics and synbiotics dietary interventions enhanced similar metabolisms relating to butanediol and s-adenosyl-l-methionine biosynthesis. Probiotics treatment also showed depleted metabolic activities related to SCFA productions, that were not depleted in prebiotics treatment. With varying differential abundance patterns and metabolic activities across the treatments, our results suggest that synbiotic treatment provide more beneficial effects over probiotics and prebiotics.

scholarly journals Effect of Short-Term Dietary Intervention and Probiotic Mix Supplementation on the Gut Microbiota of Elderly Obese Women

Nutrients ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 3011 ◽  
Author(s):  
Raffaella Cancello ◽  
Silvia Turroni ◽  
Simone Rampelli ◽  
Stefania Cattaldo ◽  
Marco Candela ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Dietary Intervention ◽  
Illumina Miseq ◽  
The Elderly ◽  
Rehabilitation Program ◽  
Rrna Gene ◽  
Obese Women ◽  
Short Term ◽  
Beneficial Effects ◽  
Increased Risk

Accumulating literature is providing evidence that the gut microbiota is involved in metabolic disorders, but the question of how to effectively modulate it to restore homeostasis, especially in the elderly, is still under debate. In this study, we profiled the intestinal microbiota of 20 elderly obese women (EO) at the baseline (T0), after 15 days of hypocaloric Mediterranean diet administered as part of a nutritional-metabolic rehabilitation program for obesity (T1), and after a further 15 days of the same diet supplemented with a probiotic mix (T2). Fecal samples were characterized by Illumina MiSeq sequencing of the 16S rRNA gene. The EO microbiota showed the typical alterations found in obesity, namely, an increase in potential pro-inflammatory components (i.e., Collinsella) and a decrease in health-promoting, short-chain fatty acid producers (i.e., Lachnospiraceae and Ruminococcaceae members), with a tendency to reduced biodiversity. After 15 days of the rehabilitation program, weight decreased by (2.7 ± 1.5)% and the gut microbiota dysbiosis was partially reversed, with a decline of Collinsella and an increase in leanness-related taxa. During the next 15 days of diet and probiotics, weight dropped further by (1.2 ± 1.1)%, markers of oxidative stress improved, and Akkermansia, a mucin degrader with beneficial effects on host metabolism, increased significantly. These findings support the relevant role of a correct dietetic approach, even in the short term, to modulate the EO gut microbiota towards a metabolic health-related configuration, counteracting the increased risk of morbidity in these patients.

scholarly journals A diet-specific microbiota drives Salmonella Typhimurium to adapt its in vivo response to plant-derived substrates

2021 ◽  
Vol 3 (1) ◽  
Author(s):  
Nicoletta Prax ◽  
Stefanie Wagner ◽  
Jakob Schardt ◽  
Klaus Neuhaus ◽  
Thomas Clavel ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Gene Expression Pattern ◽  
Transcriptional Response ◽  
Rrna Gene ◽  
Transcriptional Responses ◽  
Metabolic Functions ◽  
Westernized Diet ◽  
Metabolic Activities ◽  
The Impact

Abstract Background Little is known about the complex interactions between the diet, the gut microbiota, and enteropathogens. Here, the impact of two specific diets on the composition of the mouse gut microbiota and on the transcriptional response of Salmonella Typhimurium (S. Typhimurium) was analyzed in an enteritis model. Results Mice were fed for two weeks a fibre-rich, plant-based diet (PD), or a Westernized diet (WD) rich in animal fat and proteins and in simple sugars, and then infected with an invasin-negative S. Typhimurium strain ST4/74 following streptomycin-treatment. Seventy-two hours post infection, fecal pathogen loads were equal in both diet groups, suggesting that neither of the diets had negatively influenced the ability of this ST4/74 strain to colonize and proliferate in the gut at this time point. To define its diet-dependent gene expression pattern, S. Typhimurium was immunomagnetically isolated from the gut content, and its transcriptome was analyzed. A total of 66 genes were more strongly expressed in mice fed the plant-based diet. The majority of these genes was involved in metabolic functions degrading substrates of fruits and plants. Four of them are part of the gat gene cluster responsible for the uptake and metabolism of galactitol and D-tagatose. In line with this finding, 16S rRNA gene amplicon analysis revealed higher relative abundance of bacterial families able to degrade fiber and nutritive carbohydrates in PD-fed mice in comparison with those nourished with a WD. Competitive mice infection experiments performed with strain ST4/74 and ST4/74 ΔSTM3254 lacking tagatose-1,6-biphosphate aldolase, which is essential for galactitol and tagatose utilization, did not reveal a growth advantage of strain ST4/74 in the gastrointestinal tract of mice fed plant-based diet as compared to the deletion mutant. Conclusion A Westernized diet and a plant-based diet evoke distinct transcriptional responses of S. Typhimurium during infection that allows the pathogen to adapt its metabolic activities to the diet-derived nutrients. This study therefore provides new insights into the dynamic interplay between nutrient availability, indigenous gut microbiota, and proliferation of S. Typhimurium.

scholarly journals Individualized Responses of Gut Microbiota to Dietary Intervention Modeled in Humanized Mice

mSystems ◽  
2016 ◽  
Vol 1 (5) ◽  
Author(s):  
Samuel A. Smits ◽  
Angela Marcobal ◽  
Steven Higginbottom ◽  
Justin L. Sonnenburg ◽  
Purna C. Kashyap
Keyword(s):  
Gut Microbiota ◽  
Dietary Intervention ◽  
Scientific Evidence ◽  
Marker Gene ◽  
Gastrointestinal Symptoms ◽  
Dietary Interventions ◽  
Inflammatory Bowel ◽  
Irritable Bowel ◽  
And Function ◽  
Generation Sequencing

ABSTRACT Dietary modification has long been used empirically to modify symptoms in inflammatory bowel disease, irritable bowel syndrome, and a diverse group of diseases with gastrointestinal symptoms. There is both anecdotal and scientific evidence to suggest that individuals respond quite differently to similar dietary changes, and the highly individualized nature of the gut microbiota makes it a prime candidate for these differences. To overcome the typical confounding factors of human dietary interventions, here we employ ex-germfree mice colonized by microbiotas of three different humans to test how different microbiotas respond to a defined change in carbohydrate content of diet by measuring changes in microbiota composition and function using marker gene-based next-generation sequencing and metabolomics. Our findings suggest that the same diet has very different effects on each microbiota’s membership and function, which may in turn explain interindividual differences in response to a dietary ingredient. Diet plays an important role in shaping the structure and function of the gut microbiota. The microbes and microbial products in turn can influence various aspects of host physiology. One promising route to affect host function and restore health is by altering the gut microbiome using dietary intervention. The individuality of the microbiome may pose a significant challenge, so we sought to determine how different microbiotas respond to the same dietary intervention in a controlled setting. We modeled gut microbiotas from three healthy donors in germfree mice and defined compositional and functional alteration following a change in dietary microbiota-accessible carbohydrates (MACs). The three gut communities exhibited responses that differed markedly in magnitude and in the composition of microbiota-derived metabolites. Adjustments in community membership did not correspond to the magnitude of changes in the microbial metabolites, highlighting potential challenges in predicting functional responses from compositional data and the need to assess multiple microbiota parameters following dietary interventions. IMPORTANCE Dietary modification has long been used empirically to modify symptoms in inflammatory bowel disease, irritable bowel syndrome, and a diverse group of diseases with gastrointestinal symptoms. There is both anecdotal and scientific evidence to suggest that individuals respond quite differently to similar dietary changes, and the highly individualized nature of the gut microbiota makes it a prime candidate for these differences. To overcome the typical confounding factors of human dietary interventions, here we employ ex-germfree mice colonized by microbiotas of three different humans to test how different microbiotas respond to a defined change in carbohydrate content of diet by measuring changes in microbiota composition and function using marker gene-based next-generation sequencing and metabolomics. Our findings suggest that the same diet has very different effects on each microbiota’s membership and function, which may in turn explain interindividual differences in response to a dietary ingredient. Author Video: An author video summary of this article is available.

scholarly journals The Effect of White Rice and White Bread as Staple Foods on Gut Microbiota and Host Metabolism

Nutrients ◽  
2018 ◽  
Vol 10 (9) ◽  
pp. 1323 ◽  
Author(s):  
Fumika Mano ◽  
Kaori Ikeda ◽  
Erina Joo ◽  
Yoshihito Fujita ◽  
Shunsuke Yamane ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Dietary Intervention ◽  
16S Rrna Gene Sequencing ◽  
Rrna Gene ◽  
White Bread ◽  
Fecal Samples ◽  
White Rice ◽  
Staple Foods ◽  
Glucagon Like Peptide 1 ◽  
Side Dishes

The purpose of this study was to examine the influence of two kinds of major Japanese staple foods, white rice and white bread, on gut microbiota against the background in which participants eat common side dishes. Seven healthy subjects completed the dietary intervention with two 1-week test periods with a 1-week wash-out period in cross-over design (UMIN registration UMIN000023142). White bread or white rice and 21 frozen prepared side dishes were consumed during the test periods. At baseline and at the end of each period, fasting blood samples, breath samples, and fecal samples were collected. For fecal samples, 16S rRNA gene sequencing was used to analyze the gut microbiota. After the bread period, the abundance of fecal Bifidobacterium genus (19.2 ± 14.5 vs. 6.2 ± 6.6 (%), p = 0.03), fasting glucagon-like peptide 1 (GLP-1) (13.6 ± 2.0 vs. 10.5 ± 2.9 (pg/mL), p = 0.03), and breath hydrogen (23.4 ± 9.9 vs. 8.2 ± 5.5 (ppm), p = 0.02) were significantly higher than those of after the rice period. Plasma SCFAs also tended to be higher after the bread period. White bread contains more dietary fiber than refined short grain rice. These findings suggest that indigestible carbohydrate intake from short grain rice as a staple food may be smaller than that of white bread.

scholarly journals Probiotic Supplementation in a Clostridium difficile-Infected Gastrointestinal Model Is Associated with Restoring Metabolic Function of Microbiota

2019 ◽  
Vol 8 (1) ◽  
pp. 60
Author(s):  
Mohd Baasir Gaisawat ◽  
Chad W. MacPherson ◽  
Julien Tremblay ◽  
Amanda Piano ◽  
Michèle M. Iskandar ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Alpha Diversity ◽  
Gastrointestinal Disorder ◽  
Short Chain Fatty Acids ◽  
Rrna Gene ◽  
Metabolic Function ◽  
Microbial Composition ◽  
Single Strain ◽  
Fecal Samples ◽  
Metabolic Functions

Clostridium (C.) difficile-infection (CDI), a nosocomial gastrointestinal disorder, is of growing concern due to its rapid rise in recent years. Antibiotic therapy of CDI is associated with disrupted metabolic function and altered gut microbiota. The use of probiotics as an adjunct is being studied extensively due to their potential to modulate metabolic functions and the gut microbiota. In the present study, we assessed the ability of several single strain probiotics and a probiotic mixture to change the metabolic functions of normal and C. difficile-infected fecal samples. The production of short-chain fatty acids (SCFAs), hydrogen sulfide (H2S), and ammonia was measured, and changes in microbial composition were assessed by 16S rRNA gene amplicon sequencing. The C. difficile-infection in fecal samples resulted in a significant decrease (p < 0.05) in SCFA and H2S production, with a lower microbial alpha diversity. All probiotic treatments were associated with significantly increased (p < 0.05) levels of SCFAs and restored H2S levels. Probiotics showed no effect on microbial composition of either normal or C. difficile-infected fecal samples. These findings indicate that probiotics may be useful to improve the metabolic dysregulation associated with C. difficile infection.

scholarly journals Impact of a Moderately Hypocaloric Mediterranean Diet on the Gut Microbiota Composition of Italian Obese Patients

Nutrients ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2707 ◽  
Author(s):  
Silvia Pisanu ◽  
Vanessa Palmas ◽  
Veronica Madau ◽  
Emanuela Casula ◽  
Andrea Deledda ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Mediterranean Diet ◽  
Illumina Miseq ◽  
Nutritional Intervention ◽  
Rrna Gene ◽  
Obese Patients ◽  
Dietary Interventions ◽  
The Impact ◽  
The 16S Rrna Gene ◽  
Gut Microbiota Composition

Although it is known that the gut microbiota (GM) can be modulated by diet, the efficacy of specific dietary interventions in determining its composition and diversity in obese patients remains to be ascertained. The present work aims to evaluate the impact of a moderately hypocaloric Mediterranean diet on the GM of obese and overweight patients (OB). The GM of 23 OB patients (F/M = 20/3) was compared before (T0) and after 3 months (T3) of nutritional intervention (NI). Fecal samples were analyzed by Illumina MiSeq sequencing of the 16S rRNA gene. At baseline, GM characterization confirmed typical obesity-associated dysbiosis. After 3 months of NI, patients presented a statistically significant reduction in body weight and fat mass, along with changes in the relative abundance of many microbial patterns. In fact, an increase in the abundance of several Bacteroidetes taxa (i.e., Sphingobacteriaceae, Sphingobacterium, Bacteroides spp., Prevotella stercorea) and a depletion of many Firmicutes taxa (i.e., Lachnospiraceae members, Ruminococcaceae and Ruminococcus, Veillonellaceae, Catenibacterium, Megamonas) were observed. In addition, the phylum Proteobacteria showed an increased abundance, while the genus Sutterella, within the same phylum, decreased after the intervention. Metabolic pathways, predicted by bioinformatic analyses, showed a decrease in membrane transport and cell motility after NI. The present study extends our knowledge of the GM profiles in OB, highlighting the potential benefit of moderate caloric restriction in counteracting the gut dysbiosis.

scholarly journals Microbial Enterotypes, Inferred by the Prevotella-to-Bacteroides Ratio, Remained Stable during a 6-Month Randomized Controlled Diet Intervention with the New Nordic Diet

2013 ◽  
Vol 80 (3) ◽  
pp. 1142-1149 ◽  
Author(s):  
Henrik M. Roager ◽  
Tine R. Licht ◽  
Sanne K. Poulsen ◽  
Thomas M. Larsen ◽  
Martin I. Bahl
Keyword(s):  
Gut Microbiota ◽  
Quantitative Pcr ◽  
Dietary Intervention ◽  
Plasma Cholesterol ◽  
Biological Significance ◽  
Pcr Analysis ◽  
Dietary Interventions ◽  
Content Type ◽  
Nordic Diet ◽  
New Nordic Diet

ABSTRACTIt has been suggested that the human gut microbiota can be divided into enterotypes based on the abundance of specific bacterial groups; however, the biological significance and stability of these enterotypes remain unresolved. Here, we demonstrated that subjects (n= 62) 18 to 65 years old with central obesity and components of metabolic syndrome could be grouped into two discrete groups simply by their relative abundance ofPrevotellaspp. divided byBacteroidesspp. (P/Bratio) obtained by quantitative PCR analysis. Furthermore, we showed that these groups remained stable during a 6-month, controlled dietary intervention, where the effect of consuming a diet in accord with the new Nordic diet (NND) recommendations as opposed to consuming the average Danish diet (ADD) on the gut microbiota was investigated. In this study, subjects (with and without stratification according toP/Bratio) did not reveal significant changes in 35 selected bacterial taxa quantified by quantitative PCR (ADD compared to NND) resulting from the dietary interventions. However, we found higher total plasma cholesterol within the high-P/Bgroup than in the low-P/Bgroup after the intervention. We propose that stratification of humans based simply on theirP/Bratio could allow better assessment of possible effects of interventions on the gut microbiota and physiological biomarkers.

scholarly journals Impact of a Moderately Hypocaloric Mediterranean Diet on the Gut Microbiota Composition of Italian Obese Patients

2020 ◽  
Author(s):  
Silvia Pisanu ◽  
Vanessa Palmas ◽  
Veronica Madau ◽  
Emanuela Casula ◽  
Andrea Deledda ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Mediterranean Diet ◽  
Illumina Miseq ◽  
Nutritional Intervention ◽  
The Body ◽  
Rrna Gene ◽  
Obese Patients ◽  
Dietary Interventions ◽  
The Impact ◽  
Gut Microbiota Composition

Although it is known that the gut microbiota (GM) can be modulated by diet, the efficacy of specific dietary interventions in determining its composition and diversity in obese patients remains to be ascertained. The present work aims to evaluate the impact of a moderately hypocaloric Mediterranean diet on the GM of obese and overweight patients (OB). The GM of 23 OB patients (F/M= 20/3) was compared before (T0) and after 3 months (T3) of the nutritional intervention (NI). Fecal samples were analyzed by Illumina MiSeq sequencing of the 16S rRNA gene. At baseline, the GM characterization confirmed the typical obesity-associated dysbiosis. After 3 months of NI, patients presented a statistically significant reduction of the body weight and fat mass, along with changes in the relative abundance of many microbial patterns. In fact, we observed an increased abundance in several Bacteroidetes taxa (i.e. Sphingobacteriaceae, Sphingobacterium, Bacteroides spp., Prevotella stercorea) and depletion of many Firmicutes taxa (i.e. Lachnospiraceae members, Ruminococcaceae and Ruminococcus, Veillonellaceae, Catenibacterium, Megamonas). In addition, the phylum Proteobacteria showed an increased abundance, while the genus Sutterella, within the same phylum, decreased after the intervention. Metabolic pathways, predicted by bioinformatic analyses, showed a decrease in membrane transport and cell motility after NI. The present study extends our knowledge of the GM profiles in OB, highlighting the potential benefit of a moderate caloric restriction in counteracting the gut dysbiosis.

scholarly journals Genomic Techniques Used to Investigate the Human Gut Microbiota

2021 ◽  
Author(s):  
Akhlash P. Singh
Keyword(s):  
Gut Microbiota ◽  
High Throughput ◽  
Rrna Gene ◽  
Bacterial Strains ◽  
Human Gut ◽  
Culture Independent ◽  
Microbe Interactions ◽  
Next Generation Sequencing Ngs ◽  
Lifestyle Related Diseases ◽  
Gut Microbial Community

The human gut is the complex microbial ecosystem comprises more than 100 trillion microbes also known as microbiota. The gut microbiota does not only include about 400–500 types of bacterial strains, but it also contains archaea, bacteriophage, fungi, and protozoa species. In order to complete the characterization of the gut microbial community, we need the help of many culture-dependent and culture-independent genomic technologies. Recently, next-generation sequencing (NGS), mediated metagenomics that rely on 16S rRNA gene amplification, and whole-genome sequencing (WGS) have provided us deep knowledge related to important interactions such as host-microbiota and microbe-microbe interactions under various perturbation inside the gut. But, we still lack complete knowledge related to unique gene products encoded by gut meta-genome. Hence, it required the application of high-throughput “omics-based” methods to support metagenomics. Currently, a combination of high-throughput culturing and microfluidics assays is providing a new method to characterize non-amenable bacterial strains from the gut environment. The recent additions of artificial intelligence and deep learning to the area of microbiome studies have enhanced the capability of identification of thousand microbes simultaneously. Given above, it is necessary to apply new genome editing tools that can be used to design the personalized microflora which can be used to cure lifestyle-related diseases.

scholarly journals Effects of Probiotic Bacteria Lactobacillaceae on the Gut Microbiota in Children With Celiac Disease Autoimmunity: A Placebo-Controlled and Randomized Clinical Trial

2021 ◽  
Vol 8 ◽  
Author(s):  
Elin Oscarsson ◽  
Åsa Håkansson ◽  
Carin Andrén Aronsson ◽  
Göran Molin ◽  
Daniel Agardh
Keyword(s):  
Celiac Disease ◽  
Gut Microbiota ◽  
Tissue Transglutaminase ◽  
16S Rrna Gene Sequencing ◽  
Probiotic Bacteria ◽  
Rrna Gene ◽  
Sequence Variant ◽  
Bacterial Strains ◽  
Probiotic Supplementation ◽  
Rrna Gene Sequencing

Disturbances of the gut microbiota may influence the development of various autoimmune diseases. This study investigated the effects of supplementations with the probiotic bacteria, Lactiplantibacillus plantarum HEAL9 and Lacticaseibacillus paracasei 8700:2, on the microbial community in children with celiac disease autoimmunity (CDA). The study included 78 genetically predisposed children for celiac disease with elevated levels of tissue transglutaminase autoantibodies (tTGA) signaling for ongoing CDA. Among those children, 38 received a placebo and 40 received the probiotic supplement daily for 6 months. Fecal and plasma samples were collected at baseline and after 3 and 6 months, respectively. The bacterial community was investigated with 16S rRNA gene sequencing and terminal restriction fragment length polymorphism (T-RFLP), and tTGA levels were measured in radiobinding assays. In children that received probiotic supplementation, the relative abundance of Lactobacillaceae increased over time, while it remained unchanged in the placebo group. There was no overall correlation between tTGA levels and bacterial genus except for a positive correlation between Dialister and IgG-tTG in the probiotic group. The abundance of specific bacterial amplicon sequence variant (ASV:s) changed during the study in both groups, indicating that specific bacterial strains might be affected by probiotic supplementation.

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