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 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 The microbial community of the gut differs between piglets fed sow milk, milk replacer or bovine colostrum

2017 ◽  
Vol 117 (7) ◽  
pp. 964-978 ◽  
Author(s):  
Ann-Sofie R. Poulsen ◽  
Nadieh de Jonge ◽  
Sugiharto Sugiharto ◽  
Jeppe L. Nielsen ◽  
Charlotte Lauridsen ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Amplicon Sequencing ◽  
Bovine Colostrum ◽  
Milk Replacer ◽  
Rrna Gene ◽  
Bacterial Dna ◽  
Faecal Samples ◽  
Milk Replacers ◽  
The 16S Rrna Gene ◽  
Gut Microbiota Composition

AbstractThe aim of this study was to characterise the gut microbiota composition of piglets fed bovine colostrum (BC), milk replacer (MR) or sow milk (SM) in the post-weaning period. Piglets (n36), 23-d old, were randomly allocated to the three diets. Faecal samples were collected at 23, 25, 27 and 30 d of age. Digesta from the stomach, ileum, caecum and mid-colon was collected at 30 d of age. Bacterial DNA from all samples was subjected to amplicon sequencing of the 16S rRNA gene. Bacterial enumerations by culture and SCFA analysis were conducted as well. BC-piglets had the highest abundance ofLactococcusin the stomach (P<0·0001) and ileal (P<0·0001) digesta, whereas SM-piglets had the highest abundance ofLactobacillusin the stomach digesta (P<0·0001). MR-piglets had a high abundance of Enterobacteriaceae in the ileal digesta (P<0·0001) and a higher number of haemolytic bacteria in ileal (P=0·0002) and mid-colon (P=0·001) digesta than SM-piglets. BC-piglets showed the highest colonic concentration of iso-butyric and iso-valeric acid (P=0·02). Sequencing and culture showed that MR-piglets were colonised by a higher number of Enterobacteriaceae, whereas the gut microbiota of BC-piglets was characterised by a change in lactic acid bacteria genera when compared with SM-piglets. We conclude that especially the ileal microbiota of BC-piglets had a closer resemblance to that of SM-piglets in regard to the abundance of potential enteric pathogens than did MR-piglets. The results indicate that BC may be a useful substitute for regular milk replacers, and as a feeding supplement in the immediate post-weaning period.

scholarly journals Colonisation potential of plantaricin-producing Lactobacillus plantarum SF9C andS-layer-carrying Lactobacillus brevis SF9B among gut microbiota

2020 ◽  
Author(s):  
Katarina Butorac ◽  
Martina Banic ◽  
Jasna Novak ◽  
Andreja Leboš Pavunc ◽  
Ksenija Uroic ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Lactobacillus Plantarum ◽  
Lactobacillus Brevis ◽  
Illumina Miseq ◽  
Rrna Gene ◽  
Microbiota Composition ◽  
Combined Application ◽  
Probiotic Potential ◽  
Gut Microbiota Composition

Abstract Background: The influence of an S-layer-carrying strain Lactobacillus brevis SF9B and a plantaricin-producing strain Lactobacillus plantarum SF9C on the gut microbiota composition was evaluated in the rats. Considering the probiotic potential of Lb. brevis SF9B, this study aimed to examine the antibacterial activity of Lb. plantarum SF9C and potential for their in vivo colonisation, which could be the basis for the investigation of their synergistic functionality. Results: A plantaricin-encoding cluster was identified in Lb. plantarum SF9C, a strain which efficiently inhibited the growth of Listeria monocytogenes ATCC®19111™ and Staphylococcus aureus 3048. Contrary to the plantaricin-producing SF9C strain, the S-layer-carrying SF9B strain excluded Escherichia coli 3014 and Salmonella enterica serovar Typhimurium FP1 from adhesion to Caco-2 cells. Finally, DGGE analysis of the V2-V3 region of the 16S rRNA gene confirmed the transit of two selected lactobacilli through the gastrointestinal tract (GIT). Microbiome profiling via the Illumina MiSeq platform revealed the prevalence of Lactobacillus spp. in the gut microbiota of rats suggesting their colonisation potential in GIT.Conclusion: The combined application of Lb. plantarum SF9C and Lb. brevis SF9B could influence the intestinal microbiota composition, which is reflected through the increased abundance of Lactobacillus genus, but also through altered abundances of other bacterial genera, either in the model of healthy or aberrant microbiota of rats. The obtained results contributed to the functional aspects of SF9C and SF9B strains which could be incorporated in the probiotic-containing functional foods and therefore have a beneficial influence on the gut microbiota composition.

scholarly journals Gut Microbiota Analysis Results Are Highly Dependent on the 16S rRNA Gene Target Region, Whereas the Impact of DNA Extraction Is Minor

2017 ◽  
Vol 28 (1) ◽  
pp. 19-30 ◽  
Author(s):  
Anniina Rintala ◽  
Sami Pietilä ◽  
Eveliina Munukka ◽  
Erkki Eerola ◽  
Juha-Pekka Pursiheimo ◽  
...  
Keyword(s):  
16S Rrna ◽  
Gut Microbiota ◽  
16S Rrna Gene ◽  
Dna Extraction ◽  
Rrna Gene ◽  
Gene Target ◽  
Target Region ◽  
Microbiota Analysis ◽  
The Impact ◽  
The 16S Rrna Gene

Single aflatoxin B1 exposure induces changes in gut microbiota community in C57Bl/6 mice

2017 ◽  
Vol 10 (3) ◽  
pp. 249-254 ◽  
Author(s):  
A.T. Ishikawa ◽  
J.S. Weese ◽  
A.P.F.R.L. Bracarense ◽  
A.A. Alfieri ◽  
G.G. Oliveira ◽  
...  
Keyword(s):  
Body Weight ◽  
Microbial Community ◽  
Illumina Miseq ◽  
Rrna Gene ◽  
Single Oral Administration ◽  
Aflatoxin B ◽  
Gut Microbial Community ◽  
The Impact ◽  
Harmful Effects ◽  
The 16S Rrna Gene

The liver and the gastrointestinal tract are the earliest target for the harmful effects of aflatoxin B1 (AFB1). This study investigated the impact of a single oral administration of AFB1 (663 µg of AFB1/kg of body weight) on the gut microbial community of C57Bl/6 mice. Sequencing of the V4 region of the 16S rRNA gene was performed with an Illumina MiSeq sequencer. AFB1 caused significant increases in the Lachnospiraceae family and decreases in Mucispirillum genus. In conclusion, a single oral dose of AFB1 changed the relative abundances of some taxa, but not the overall membership or structure of intestinal microbial communities in C57Bl/6 mice.

scholarly journals Genetic Polymorphisms, Adherence to Mediterranean Diet and Microbiota-Associated Urolithin Metabotypes: A Complex Cocktail to Predict the Obesity in Childhood-Adolescence

2019 ◽  
Author(s):  
Adrián Cortés-Martín ◽  
Gonzalo Colmenarejo ◽  
María Victoria Selma ◽  
Juan Carlos Espín
Keyword(s):  
Gut Microbiota ◽  
Mediterranean Diet ◽  
Logistic Model ◽  
Predictor Variables ◽  
Nucleotide Polymorphisms ◽  
Obesity Prevalence ◽  
Dietary Interventions ◽  
Single Nucleotide ◽  
Ordinal Logistic Model ◽  
Gut Microbiota Composition

Environmental and genetic factors are associated with pandemic obesity since childhood. However, the association of overweight-obesity with these factors, acting as a consortium, has been scarcely studied in children. We aimed here to assess the probabilities of being overweighed-obese in a randomly recruited cohort of Spanish children and adolescents (n=415, 5–17 years-old) by estimating the odds ratios for different predictor variables, and their relative importance in the prediction. The predictor variables were ethnicity, age, sex, adherence to the Mediterranean diet (KIDMED), physical activity, urolithin metabotypes (UM-A, UM-B and UM-0) as biomarkers of the gut microbiota, and 53 single-nucleotide polymorphisms (SNPs) from 43 genes mainly related to obesity and cardiometabolic diseases. A proportional-odds logistic ordinal regression, validated through bootstrap, was used to model the data. While every variable was not independently associated with overweight-obesity, however, the ordinal logistic model revealed that overweight-obesity prevalence was related to being a young boy with either UM-B or UM-0, low KIDMED score and high contribution of a consortium of 24 SNPs, being rs1801253-ADRB1, rs4343-ACE, rs8061518-FTO, rs1130864-CRP, rs659366-UCP2, rs6131-SELP, rs12535708-LEP, rs1501299-ADIPOQ, rs708272-CETP and rs2241766-ADIPOQ the top-ten contributing SNPs. Additional research should confirm and complete this model by including dietary interventions and the individuals’ gut microbiota composition.

scholarly journals Colonization potential of plantaricin-producing Lactobacillus plantarum SF9C and S-layer carrying Lactobacillus brevis SF9B among gut microbiota

2020 ◽  
Author(s):  
Katarina Butorac ◽  
Martina Banic ◽  
Jasna Novak ◽  
Andreja Leboš Pavunc ◽  
Ksenija Uroic ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Lactobacillus Plantarum ◽  
Lactobacillus Brevis ◽  
Illumina Miseq ◽  
Rrna Gene ◽  
Microbiota Composition ◽  
Combined Application ◽  
Colonization Potential ◽  
Gut Microbiota Composition

Abstract Background: The influence of an S-layer carrying Lactobacillus brevis SF9B and plantaricin-producing Lactobacillus plantarum SF9C on the gut microbiota composition was evaluated in the rats. Considering the probiotic potential of Lb. brevis SF9B, this study aimed to examine the antimicrobial activity of Lb. plantarum SF9C and potential for their in vivo colonization, which could be the basis for the investigation of their synergistic functionality. Results: We identified plantaricin encoding cluster in Lb. plantarum SF9C, a strain which efficiently inhibited Listeria monocytogenes ATCC®19111™ and Staphylococcus aureus 3048. Contrary to a plantaricin-producing SF9C strain S-layer carrying SF9B strain excluded Escherichia coli 3014 and Salmonella enterica serovar Typhimurium FP1 from Caco-2 cells. DGGE analysis of the V2-V3 region of the 16S rRNA gene confirmed the transit of the two selected lactobacilli through the gastrointestinal tract. Microbiome profiling via the Illumina MiSeq platform revealed the prevalence of Lactobacillus spp. in the gut microbiota of rats suggesting their colonization potential in GIT.Conclusion: The combined application of the two strains could influence intestinal microbiota composition, which is reflected through the increased abundance of Lactobacillus genus, but also along with the abundances of other bacterial genera, either in the model of health or aberrant microbiota. Obtained results contribute to the functional aspect of SF9C and SF9B strains which could be incorporated in the probiotic-containing functional foods to beneficially influence gut microbiota composition.

Nutritional intervention promoting Mediterranean diet improves dietary intake and enhances score adherence in adolescent athletes

2020 ◽  
Vol 13 (3) ◽  
pp. 237-253
Author(s):  
Rokia Sahnoune ◽  
Malika Bouchenak
Keyword(s):  
Mediterranean Diet ◽  
Energy Intake ◽  
Nutritional Intervention ◽  
Fiber Intake ◽  
Adequate Intake ◽  
Total Proteins ◽  
Adolescent Athletes ◽  
24 Hour Recall ◽  
The Impact ◽  
Kidmed Index

BACKGROUND: Appropriate nutrition is important to maintain health, growth, and development of adolescent athlete performance. OBJECTIVE: To evaluate the impact of nutritional intervention (NI) promoting Mediterranean diet (MD), on food consumption, and adherence to MD, in scholar adolescent athletes. METHODS: Eighty athletes (Females/Males, 39/41) aged 15±1 years participated to NI. MD Adherence was assessed, using Kidmed index, at baseline, and at 6 months. Food intake was evaluated by 24-hour recall at baseline, and at four NI times. RESULTS: At baseline, 61% of athletes had poor MD adherence, and after NI, this value decreased to 10%. At 6 months of NI, 73% of males vs 46% of females had good MD adherence (≥8). Energy intake represented 2369 Kcal/d, at baseline, and was less than recommended value. After NI, significant increase was observed in energy intake (p = 0.001). Mean fiber intake (19 and 21 g/d in females and males, respectively) was less than adequate intake (26/38 g/d), but increased after NI (p = 0.000). Enhancement was noted in total, and complex carbohydrates, and total proteins, and values were increased with time (p = 0.000, p = 0.000, p = 0.003). CONCLUSION: Nutritional intervention, based on Mediterranean diet, improves total energy, and macronutrients intake, and increases MD adherence scores in adolescents athletes.

scholarly journals Gut Microbiome in a Russian Cohort of Pre- and Post-Cholecystectomy Female Patients

2021 ◽  
Vol 11 (4) ◽  
pp. 294
Author(s):  
Irina Grigor’eva ◽  
Tatiana Romanova ◽  
Natalia Naumova ◽  
Tatiana Alikina ◽  
Alexey Kuznetsov ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Relative Abundance ◽  
Gut Microbiome ◽  
Gallstone Disease ◽  
Illumina Miseq ◽  
Rrna Gene ◽  
Bacterial Phyla ◽  
Female Patients ◽  
Composition And Structure ◽  
Before And After

The last decade saw extensive studies of the human gut microbiome and its relationship to specific diseases, including gallstone disease (GSD). The information about the gut microbiome in GSD-afflicted Russian patients is scarce, despite the increasing GSD incidence worldwide. Although the gut microbiota was described in some GSD cohorts, little is known regarding the gut microbiome before and after cholecystectomy (CCE). By using Illumina MiSeq sequencing of 16S rRNA gene amplicons, we inventoried the fecal bacteriobiome composition and structure in GSD-afflicted females, seeking to reveal associations with age, BMI and some blood biochemistry. Overall, 11 bacterial phyla were identified, containing 916 operational taxonomic units (OTUs). The fecal bacteriobiome was dominated by Firmicutes (66% relative abundance), followed by Bacteroidetes (19%), Actinobacteria (8%) and Proteobacteria (4%) phyla. Most (97%) of the OTUs were minor or rare species with ≤1% relative abundance. Prevotella and Enterocossus were linked to blood bilirubin. Some taxa had differential pre- and post-CCE abundance, despite the very short time (1–3 days) elapsed after CCE. The detailed description of the bacteriobiome in pre-CCE female patients suggests bacterial foci for further research to elucidate the gut microbiota and GSD relationship and has potentially important biological and medical implications regarding gut bacteria involvement in the increased GSD incidence rate in females.

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