scholarly journals Effects of Dietary Supplementation with Prebiotics and Pediococcus Acidilactici on Gut Health, Transcriptome, Microbiome, and Metabolome in Atlantic Salmon (Salmo Salar L) after Seawater Transfer

2021 ◽  
Author(s):  
Anusha K.S. Dhanasiri ◽  
Alexander Jaramillo Torres ◽  
Elvis M Chikwati ◽  
Torunn Forberg ◽  
Åshild Krogdahl ◽  
...  
Keyword(s):  
Atlantic Salmon ◽  
Gut Microbiota ◽  
Intestinal Inflammation ◽  
Phospholipid Fatty Acid ◽  
Dietary Supplementation ◽  
Sphingolipid Metabolism ◽  
Pediococcus Acidilactici ◽  
Gut Health ◽  
Functional Ingredients ◽  
The Impact

Abstract BackgroundGiven the importance of gut microbiota for health, growth and performance of the host, the aquaculture industry has taken measures to develop functional fish feeds aiming at modulating gut microbiota and inducing the anticipated beneficial effects. However, present understanding of the impact of such functional feeds on the fish is limited. The study reported herein was conducted to gain knowledge on performance and gut health characteristics in post-smolt Atlantic salmon fed diets varying in content of functional ingredients. Three experimental diets, a diet containing fructo-oligosaccharides (FOS), a diet with a combination of FOS and Pediococcus acidilactici (BC) and a diet containing galacto-oligosaccharides (GOS) and BC, were used in a 10-weeks feeding trial. A commercial diet without functional ingredients was also included as a control/reference. Samples of blood plasma, mucosa and digesta were subjected to microbiome, transcriptome and metabolome profiling for evaluation of the diet effects. Results No significant growth differences were observed between fish fed the supplemented diets, but FOS-BC fed fish showed significantly higher growth than the control fed fish. The microbiome results showed that the BC was present in both the digesta and the mucosa samples of fish fed the FOS-BC and GOS-BC diets. Digesta-associated microbiota was altered, while mucosa-associated microbiota was relatively unaffected by diet. Replacing FOS with GOS increased the level of metabolites linked to phospholipid, fatty acid, carnitine and sphingolipid metabolism. Variation in metabolite levels between the treatments closely correlated with genera mainly belonging to Firmicutes and Actinobacteria phyla. The transcriptome analyses indicated diet effects of exchanging FOS with GOS on immune functions, oxidative defense and stress responses. No significant diet effect was observed on intestinal inflammation in the pyloric ceca or in the distal intestine, and no steatosis was observed in the pyloric ceaca. ConclusionsDietary supplementation with BC induced moderate effects on the microbiota of the digesta, while the effects of replacing FOS with GOS were more marked and was observed also for nutrient metabolism. Our data indicates therefore that the quality of a prebiotic may be of great importance for the effects of a probiotic on gut microbiota, function and health.

scholarly journals Modulation of Gut Microbiota and Oxidative Status by β-Carotene in Late Pregnant Sows

2020 ◽  
Vol 7 ◽  
Author(s):  
Xupeng Yuan ◽  
Jiahao Yan ◽  
Ruizhi Hu ◽  
Yanli Li ◽  
Ying Wang ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Dietary Supplementation ◽  
Basal Diet ◽  
Fecal Microbiota ◽  
Control Group ◽  
Metabolic Activities ◽  
The Impact ◽  
Positive Effect ◽  
Β Carotene

Recent evidences suggest that gut microbiota plays an important role in regulating physiological and metabolic activities of pregnant sows, and β-carotene has a potentially positive effect on reproduction, but the impact of β-carotene on gut microbiota in pregnant sows remains unknown. This study aimed to explore the effect and mechanisms of β-carotene on the reproductive performance of sows from the aspect of gut microbiota. A total of 48 hybrid pregnant sows (Landrace × Yorkshire) with similar parity were randomly allocated into three groups (n = 16) and fed with a basal diet or a diet containing 30 or 90 mg/kg of β-carotene from day 90 of gestation until parturition. Dietary supplementation of 30 or 90 mg/kg β-carotene increased the number of live birth to 11.82 ± 1.54 and 12.29 ± 2.09, respectively, while the control group was 11.00 ± 1.41 (P = 0.201). Moreover, β-carotene increased significantly the serum nitric oxide (NO) level and glutathione peroxidase (GSH-Px) activity (P < 0.05). Characterization of fecal microbiota revealed that 90 mg/kg β-carotene increased the diversity of the gut flora (P < 0.05). In particular, β-carotene decreased the relative abundance of Firmicutes including Lachnospiraceae AC2044 group, Lachnospiraceae NK4B4 group and Ruminococcaceae UCG-008, but enriched Proteobacteria including Bilophila and Sutterella, and Actinobacteria including Corynebacterium and Corynebacterium 1 which are related to NO synthesis. These data demonstrated that dietary supplementation of β-carotene may increase antioxidant enzyme activity and NO, an important vasodilator to promote the neonatal blood circulation, through regulating gut microbiota in sows.

scholarly journals Dietary resveratrol attenuation of intestinal inflammation and oxidative damage is linked to the alteration of gut microbiota and butyrate in piglets challenged with deoxynivalenol

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Yueqin Qiu ◽  
Jun Yang ◽  
Li Wang ◽  
Xuefen Yang ◽  
Kaiguo Gao ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Oxidative Damage ◽  
Protein Expression ◽  
Intestinal Inflammation ◽  
Control Diet ◽  
Intestinal Barrier Function ◽  
Protective Effects ◽  
Gut Health ◽  
Antioxidant Genes ◽  
Mrna And Protein Expression

Abstract Background Deoxynivalenol (DON) is a widespread mycotoxin that induces intestinal inflammation and oxidative stress in humans and animals. Resveratrol (RES) effectively exerts anti-inflammatory and antioxidant effects. However, the protective effects of RES on alleviating DON toxicity in piglets and the underlying mechanism remain unclear. Therefore, this study aimed to investigate the effect of RES on growth performance, gut health and the gut microbiota in DON-challenged piglets. A total of 64 weaned piglets [Duroc × (Landrace × Yorkshire), 21-d-old, 6.97 ± 0.10 kg body weight (BW)] were randomly allocated to 4 treatment groups (8 replicate pens per treatment, each pen containing 2 males; n = 16 per treatment) for 28 d. The piglets were fed a control diet (CON) or the CON diet supplemented with 300 mg RES/kg diet (RES group), 3.8 mg DON/kg diet (DON) or both (DON+RES) in a 2 × 2 factorial design. Results DON-challenged piglets fed the RES-supplemented diet had significantly decreased D-lactate concentrations and tumor necrosis factor alpha (TNF-α) and interleukin 1 beta (IL-1β) mRNA and protein expression, and increased zonula occludens-1 (ZO-1) mRNA and protein expression compared with those of DON-challenged piglets fed the unsupplemented diet (P < 0.05). Compared with unsupplemented DON-challenged piglets, infected piglets fed a diet with RES showed significantly decreased malondialdehyde (MDA) levelsand increased mRNA expression of antioxidant enzymes and antioxidant genes (i.e., GCLC, GCLM, HO-1, SOD1 and NQO-1) and glutamate-cysteine-ligase modulatory subunit (GCLM) protein expression (P < 0.05). Moreover, RES supplementation significantly abrogated the increase in the proportion of TUNEL-positive cells and the protein expression of caspase3 in DON-challenged piglets (P < 0.05). Finally, RES supplementation significantly increased the abundance of Roseburia and butyrate concentrations, while decreasing the abundances of Bacteroides and unidentified-Enterobacteriaceae in DON-challenged piglets compared with DON-challenged piglets alone (P < 0.05). Conclusions RES supplementation improved gut health in DON-challenged piglets by strengthening intestinal barrier function, alleviating intestinal inflammation and oxidative damage, and positively modulating the gut microbiota. The protective effects of RES on gut health may be linked to increased Roseburia and butyrate concentrations, and decreased levels of Bacteroides and unidentified-Enterobacteriaceae.

scholarly journals In Vitro Fecal Fermentation Patterns of Arabinoxylan from Rice Bran on Gut Microbiota in Normal Weight and Overweight/Obese Subjects

2020 ◽  
Vol 4 (Supplement_2) ◽  
pp. 1560-1560
Author(s):  
Inah Gu ◽  
Wing Shun Lam ◽  
Daya Marasini ◽  
Cindi Brownmiller ◽  
Brett Savary ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Rice Bran ◽  
Block Design ◽  
16S Rrna Gene Sequencing ◽  
Short Chain Fatty Acids ◽  
Normal Weight ◽  
Rrna Gene ◽  
Gut Health ◽  
The Impact

Abstract Objectives Arabinoxylan is a non-starch polysaccharide and rich in wheat, rice and many other cereal grains. Diets high in fiber help promoting gut health in obesity. The objective of this study was to investigate the impact of arabinoxylan from rice bran on the gut microbiota and short chain fatty acids (SCFA) in normal weight (NW) and overweight/obese (OO) subjects through in vitro fecal fermentation. Methods Arabinoxylan was extracted from rice bran fiber. For in vitro fecal fermentation, each fecal sample from NW (n = 6, 3 males and 3 females) and OO (n = 7, 3 males and 4 females) was diluted into anaerobic medium with three treatments: control (no substrates), fructooligosaccharides (FOS, a well-known prebiotic), and arabinoxylan. Samples were incubated at 37˚C and aliquots were taken at 0, 4, 8, 12 and 24 h. SCFA content from samples at all timepoints was analyzed using HPLC. Samples at 0 and 24 h were used for gut microbiota analysis through 16S rRNA gene sequencing. Statistical analyses were performed for the randomized complete block design, where the weight classes are confounded with blocks (subjects). Friedman test was used to determine the difference at 5% level of significance. Results As a result, arabinoxylan treatment significantly increased total SCFA concentration in both NW and OO subjects than control (P &lt; 0.05), comparable to FOS treatment. Between weight classes under arabinoxylan treatment, OO group showed a significantly higher total SCFA content than NW group (P &lt; 0.05). Arabinoxylan changed gut microbial population at the genus level, stimulating Bifidobacterium, Collinsella and Blautia and decreasing Clostridium XIVa and b, Dorea and Oscillibacter (P &lt; 0.05). In addition, different microbiome population was shown in weight classes with three treatments, showing higher Bacteroides in NW and higher Prevotella in OO. Conclusions These results showed that arabinoxylan from rice bran modified gut microbiota in both weight classes, increasing total SCFA content. This study suggests that arabinoxylan from rice bran may have a potential impact on microbial gut health in obesity with prebiotic activities. Funding Sources University of Arkansas.

scholarly journals The role of added feed enzymes in promoting gut health in swine and poultry

2013 ◽  
Vol 26 (1) ◽  
pp. 71-88 ◽  
Author(s):  
Elijah Kiarie ◽  
Luis F. Romero ◽  
Charles M. Nyachoti
Keyword(s):  
Gut Microbiota ◽  
Broiler Chickens ◽  
Critical Role ◽  
Gut Health ◽  
Pathogen Challenge ◽  
Nutrient Utilisation ◽  
Host Nutrition ◽  
Feed Enzymes ◽  
The Impact

The value of added feed enzymes (FE) in promoting growth and efficiency of nutrient utilisation is well recognised in single-stomached animal production. However, the effects of FE on the microbiome of the gastrointestinal tract (GIT) are largely unrecognised. A critical role in host nutrition, health, performance and quality of the products produced is played by the intestinal microbiota. FE can make an impact on GIT microbial ecology by reducing undigested substrates and anti-nutritive factors and producing oligosaccharidesin situfrom dietary NSP with potential prebiotic effects. Investigations with molecular microbiology techniques have demonstrated FE-mediated responses on energy utilisation in broiler chickens that were associated with certain clusters of GIT bacteria. Furthermore, investigations using specific enteric pathogen challenge models have demonstrated the efficacy of FE in modulating gut health. Because FE probably change the substrate characteristics along the GIT, subsequent microbiota responses will vary according to the populations present at the time of administration and their reaction to such changes. Therefore, the microbiota responses to FE administration, rather than being absolute, are a continuum or a population of responses. However, recognition that FE can make an impact on the gut microbiota and thus gut health will probably stimulate development of FE capable of modulating gut microbiota to the benefit of host health under specific production conditions. The present review brings to light opportunities and challenges for the role of major FE (carbohydrases and phytase) on the gut health of poultry and swine species with a specific focus on the impact on GIT microbiota.

scholarly journals Probiotics maintain the gut microbiome homeostasis during Indian Antarctic expedition by ship

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ashish Kumar Srivastava ◽  
Vishwajeet Rohil ◽  
Brij Bhushan ◽  
Malleswara Rao Eslavath ◽  
Harshita Gupta ◽  
...  
Keyword(s):  
Placebo Group ◽  
Gut Microbiota ◽  
Gut Microbiome ◽  
Glycoside Hydrolases ◽  
Gut Health ◽  
Microbial Composition ◽  
Carbohydrate Binding Modules ◽  
Antarctic Expedition ◽  
Probiotic Intervention ◽  
The Impact

AbstractShip voyage to Antarctica is a stressful journey for expedition members. The response of human gut microbiota to ship voyage and a feasible approach to maintain gut health, is still unexplored. The present findings describe a 24-day long longitudinal study involving 19 members from 38th Indian Antarctic Expedition, to investigate the impact of ship voyage and effect of probiotic intervention on gut microbiota. Fecal samples collected on day 0 as baseline and at the end of ship voyage (day 24), were analyzed using whole genome shotgun sequencing. Probiotic intervention reduced the sea sickness by 10% compared to 44% in placebo group. The gut microbiome in placebo group members on day 0 and day 24, indicated significant alteration compared to a marginal change in the microbial composition in probiotic group. Functional analysis revealed significant alterations in carbohydrate and amino acid metabolism. Carbohydrate-active enzymes analysis represented functional genes involved in glycoside hydrolases, glycosyltransferases and carbohydrate binding modules, for maintaining gut microbiome homeostasis. Suggesting thereby the possible mechanism of probiotic in stabilizing and restoring gut microflora during stressful ship journey. The present study is first of its kind, providing a feasible approach for protecting gut health during Antarctic expedition involving ship voyage.

scholarly journals Butyric and Citric Acids and Their Salts in Poultry Nutrition: Effects on Gut Health and Intestinal Microbiota

2021 ◽  
Vol 22 (19) ◽  
pp. 10392
Author(s):  
Mebratu Melaku ◽  
Ruqing Zhong ◽  
Hui Han ◽  
Fan Wan ◽  
Bao Yi ◽  
...  
Keyword(s):  
Gut Microbiota ◽  
Organic Acids ◽  
Growth Performance ◽  
Pathogenic Bacteria ◽  
Intestinal Inflammation ◽  
Farm Animals ◽  
Gut Health ◽  
Intestinal Health ◽  
Poultry Products ◽  
Poultry Nutrition

Intestinal dysfunction of farm animals, such as intestinal inflammation and altered gut microbiota, is the critical problem affecting animal welfare, performance and farm profitability. China has prohibited the use of antibiotics to improve feed efficiency and growth performance for farm animals, including poultry, in 2020. With the advantages of maintaining gut homeostasis, enhancing digestion, and absorption and modulating gut microbiota, organic acids are regarded as promising antibiotic alternatives. Butyric and citric acids as presentative organic acids positively impact growth performance, welfare, and intestinal health of livestock mainly by reducing pathogenic bacteria and maintaining the gastrointestinal tract (GIT) pH. This review summarizes the discovery of butyric acid (BA), citric acid (CA) and their salt forms, molecular structure and properties, metabolism, biological functions and their applications in poultry nutrition. The research findings about BA, CA and their salts on rats, pigs and humans are also briefly reviewed. Therefore, this review will fill the knowledge gaps of the scientific community and may be of great interest for poultry nutritionists, researchers and feed manufacturers about these two weak organic acids and their effects on intestinal health and gut microbiota community, with the hope of providing safe, healthy and nutrient-rich poultry products to consumers.

scholarly journals The Impact of CKD on Uremic Toxins and Gut Microbiota

Toxins ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 252
Author(s):  
Jacek Rysz ◽  
Beata Franczyk ◽  
Janusz Ławiński ◽  
Robert Olszewski ◽  
Aleksanda Ciałkowska-Rysz ◽  
...  
Keyword(s):  
Chronic Kidney Disease ◽  
Microbial Community ◽  
Kidney Disease ◽  
Gut Microbiota ◽  
Intestinal Inflammation ◽  
Adverse Outcomes ◽  
Uremic Toxins ◽  
Dietary Interventions ◽  
Stress Injury ◽  
The Impact

Numerous studies have indicated that the progression of chronic kidney disease (CKD) to end-stage renal disease (ESRD) is strictly associated with the accumulation of toxic metabolites in blood and other metabolic compartments. This accumulation was suggested to be related to enhanced generation of toxins from the dysbiotic microbiome accompanied by their reduced elimination by impaired kidneys. Intestinal microbiota play a key role in the accumulation of uremic toxins due to the fact that numerous uremic solutes are generated in the process of protein fermentation by colonic microbiota. Some disease states, including CKD, are associated with the presence of dysbiosis, which can be defined as an “imbalanced intestinal microbial community with quantitative and qualitative changes in the composition and metabolic activities of the gut microbiota”. The results of studies have confirmed the altered composition and functions of gut microbial community in chronic kidney disease. In the course of CKD protein-bound uremic toxins, including indoxyl sulfate, p-cresyl glucuronide, p-cresyl sulfate and indole-3-acetic acid are progressively accumulated. The presence of chronic kidney disease may be accompanied by the development of intestinal inflammation and epithelial barrier impairment leading to hastened systemic translocation of bacterial-derived uremic toxins and consequent oxidative stress injury to the kidney, cardiovascular and endocrine systems. These findings offer new therapeutic possibilities for the management of uremia, inflammation and kidney disease progression and the prevention of adverse outcomes in CKD patients. It seems that dietary interventions comprising prebiotics, probiotics, and synbiotics could pose a promising strategy in the management of uremic toxins in CKD.

scholarly journals Intermittent fasting - a potential approach to modulate the gut microbiota in humans? A systematic review

2021 ◽  
pp. 1-8
Author(s):  
Kate Llewellyn-Waters ◽  
Mohammad M. Abdullah
Keyword(s):  
Systematic Review ◽  
Clinical Trials ◽  
Gut Microbiota ◽  
Dietary Habits ◽  
Intermittent Fasting ◽  
Gut Health ◽  
Medline Search ◽  
Beneficial Effects ◽  
The Rich ◽  
The Impact

Research on gut microbiota has increased in popularity over the past decade, with evidence associating different dietary habits with changes in the makeup of the rich ecosystem of microorganisms that performs a variety of functions and induces a range of health effects, within and well beyond the gastrointestinal tract. Similarly, intermittent fasting (IF), an umbrella term describing various regimens of periods of voluntary abstinence from food and drink, has classically been associated with favourable impacts on cardiovascular risk factors, body weight, circadian biology, and, more recently, the gut health..The objective of this PRISMA systematic review was to summarize the peer-reviewed literature of clinical trials related to the impact of IF regimens on the gut microbiota. A MEDLINE search was conducted using PubMed and the keywords “intermittent fasting”, “gut microbiota”, “microbes”, and others. Whilst the field is still in its infancy, an emerging body of evidence suggests beneficial effects of IF on the health of the gut through increasing the microbial diversity and abundance, with possible clinical implications related to improving the immune function and ameliorating the metabolic status. Further research in larger clinical trials is warranted before practical recommendations for the public health can be made.

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