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Probiotics critical

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https://www.readbyqxmd.com/read/28640662/using-probiotics-in-clinical-practice-where-are-we-now-a-review-of-existing-meta-analyses
#1
Mariangela Rondanelli, Milena Anna Faliva, Simone Perna, Attilio Giacosa, Gabriella Peroni, Anna Maria Castellazzi
The scientific literature has demonstrated that probiotics have a broad spectrum of activity, although often the results are contradictory. This study provides a critical overview of the current meta-analyses that have evaluated the efficacy of probiotics in physiological and pathological conditions, such as metabolic disease, antibiotic-associated and Clostridium difficile-associated diarrhea, IBS, constipation, IBD, chemotherapy-associated diarrhea, respiratory tract infection, ventilator-associated pneumonia, NAFLD, liver encephalopathy, periodontitis, depression, vaginosis, urinary tract infections, pancreatitis, incidence of ventilator-associated pneumonia, hospital infection and stay in ICU, mortality of post-trauma patients, necrotising enterocolitis in premature infants...
June 22, 2017: Gut Microbes
https://www.readbyqxmd.com/read/28622510/microbial-genetic-composition-tunes-host-longevity
#2
Bing Han, Priya Sivaramakrishnan, Chih-Chun J Lin, Isaiah A A Neve, Jingquan He, Li Wei Rachel Tay, Jessica N Sowa, Antons Sizovs, Guangwei Du, Jin Wang, Christophe Herman, Meng C Wang
Homeostasis of the gut microbiota critically influences host health and aging. Developing genetically engineered probiotics holds great promise as a new therapeutic paradigm to promote healthy aging. Here, through screening 3,983 Escherichia coli mutants, we discovered that 29 bacterial genes, when deleted, increase longevity in the host Caenorhabditis elegans. A dozen of these bacterial mutants also protect the host from age-related progression of tumor growth and amyloid-beta accumulation. Mechanistically, we discovered that five bacterial mutants promote longevity through increased secretion of the polysaccharide colanic acid (CA), which regulates mitochondrial dynamics and unfolded protein response (UPR(mt)) in the host...
June 15, 2017: Cell
https://www.readbyqxmd.com/read/28602733/efficacy-of-viable-bacillus-pumilus-isolated-from-farmed-fish-on-immune-responses-and-increased-disease-resistance-in-nile-tilapia-oreochromis-niloticus-laboratory-and-on-farm-trials
#3
Prapansak Srisapoome, Nonthawit Areechon
Applications of viable Bacillus pumilus AQAHBS01 isolated from Nile tilapia farms as probiotics were studied in both laboratory and farm conditions. In the laboratory, feeding fish (approximately 50 g) with feed containing viable B. pumilus at concentrations of 1 × 10(7)-10(9) colony forming units (CFU)/kg elevated fish immune responses, as indicated by their phagocytic activity and superoxide anion levels, and led to more effective disease resistance against Streptococcus agalactiae. However, when these concentrations were applied to Nile tilapia cultures growing in cage culture systems, only B...
June 7, 2017: Fish & Shellfish Immunology
https://www.readbyqxmd.com/read/28602521/gut-microbiota-dysbiosis-in-postweaning-piglets-understanding-the-keys-to-health
#4
REVIEW
Raphaële Gresse, Frédérique Chaucheyras-Durand, Mickaël Alain Fleury, Tom Van de Wiele, Evelyne Forano, Stéphanie Blanquet-Diot
Weaning is a critical event in the pig's life cycle, frequently associated with severe enteric infections and overuse of antibiotics; this raises serious economic and public health concerns. In this review, we explain why gut microbiota dysbiosis, induced by abrupt changes in the diet and environment of piglets, emerges as a leading cause of post-weaning diarrhea, even if the exact underlying mechanisms remain unclear. Then, we focus on nonantimicrobial alternatives, such as zinc oxide, essential oils, and prebiotics or probiotics, which are currently evaluated to restore intestinal balance and allow a better management of the crucial weaning transition...
June 8, 2017: Trends in Microbiology
https://www.readbyqxmd.com/read/28596951/early-life-host-microbiome-interphase-the-key-frontier-for-immune-development
#5
REVIEW
Nelly Amenyogbe, Tobias R Kollmann, Rym Ben-Othman
Human existence can be viewed as an "animal in a microbial world." A healthy interaction of the human host with the microbes in and around us heavily relies on a well-functioning immune system. As development of both the microbiota and the host immune system undergo rapid changes in early life, it is not surprising that even minor alterations during this co-development can have profound consequences. Scrutiny of existing data regarding pre-, peri-, as well as early postnatal modulators of newborn microbiota indeed suggest strong associations with several immune-mediated diseases with onset far beyond the newborn period...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28593878/microbiota-abnormalities-and-the-therapeutic-potential-of-probiotics-in-the-treatment-of-mood-disorders
#6
Adiel C Rios, Pawan Kumar Maurya, Mariana Pedrini, Maiara Zeni-Graiff, Elson Asevedo, Rodrigo B Mansur, Andrea Wieck, Rodrigo Grassi-Oliveira, Roger S McIntyre, Mirian A F Hayashi, Elisa Brietzke
Major depressive disorder (MDD) and bipolar disorder (BD) are among the leading causes of burden and disability worldwide. Despite intensified research efforts to improve the treatment options and remission rates in mood disorders, no disease modifying treatment exists for these disorders. Accumulating evidence implicates the involvement of the gut microbiota in processes relevant to etiopathology of central nervous system-based disorders. The objective of this article was to critically evaluate the evidence supporting the link between gastrointestinal microbiota and mood disorders and to discuss the potential benefits of using probiotics in the treatment of MDD and BD...
May 8, 2017: Reviews in the Neurosciences
https://www.readbyqxmd.com/read/28576369/effects-of-heat-cold-acid-and-bile-salt-adaptations-on-the-stress-tolerance-and-protein-expression-of-kefir-isolated-probiotic-lactobacillus-kefiranofaciens-m1
#7
Ming-Ju Chen, Hsin-Yu Tang, Ming-Lun Chiang
Lactobacillus kefiranofaciens M1 is a probiotic strain isolated from Taiwanese kefir grains. The present study evaluated the effects of heat, cold, acid and bile salt adaptations on the stress tolerance of L. kefiranofaciens M1. The regulation of protein expression of L. kefiranofaciens M1 under these adaptation conditions was also investigated. The results showed that adaptation of L. kefiranofaciens M1 to heat, cold, acid and bile salts induced homologous tolerance and cross-protection against heterologous challenge...
September 2017: Food Microbiology
https://www.readbyqxmd.com/read/28556916/intestinal-dysbiosis-and-probiotic-applications-in-autoimmune-diseases
#8
REVIEW
Gislane Lelis Vilela de Oliveira, Aline Zazeri Leite, Bruna Stevanato Higuchi, Marina Ignácio Gonzaga, Vânia Sammartino Mariano
In humans, a complex interaction between the host immune system and commensal microbiota is required to maintain gut homeostasis. In this symbiotic relationship, the microbiota provides carbohydrate fermentation and digestion, vitamin synthesis, and gut-associated lymphoid tissue development, as well as prevents colonization by pathobionts, whereas the host offers a niche and nutrients for the survival of the microbiota. However, when this mutualistic relationship is compromised and an altered interaction between immune cells and microorganisms occurs, the gut microbiota may cause or contribute to the establishment of infectious diseases and trigger autoimmune diseases...
May 29, 2017: Immunology
https://www.readbyqxmd.com/read/28546425/the-first-crystal-structure-of-a-family-129-glycoside-hydrolase-from-a-probiotic-bacterium-reveals-critical-residues-and-metal-co-factors
#9
Mayo Sato, Dorothee Liebschner, Yusuke Yamada, Naohiro Matsugaki, Takatoshi Arakawa, Siobhan S Wills, Mitchell Hattie, Keith A Stubbs, Tasuku Ito, Toshiya Senda, Hisashi Ashida, Shinya Fushinobu
The α-N-acetylgalactosaminidase from the probiotic bacterium Bifidobacterium bifidum (NagBb) belongs to the glycoside hydrolase (GH) family 129 and hydrolyzes the glycosidic bond of Tn antigen (GalNAcα1-Ser/Thr). NagBb is involved in assimilation of O-glycans on mucin glycoproteins by B. bifidum in the human gastrointestinal tract, but its catalytic mechanism has remained elusive because of a lack of sequence homology around putative catalytic residues and of other structural information. Here we report the X-ray crystal structure of NagBb, representing the first GH129 family structure, solved by the single-wavelength anomalous dispersion method based on sulfur atoms of the native protein...
May 25, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28540921/the-path-towards-microbiome-based-metabolite-treatment
#10
Jotham Suez, Eran Elinav
The increasing evidence pointing towards the involvement of the gut microbiome in multiple diseases, as well as its plasticity, renders it a desirable potential therapeutic target. Nevertheless, classical therapies based on the consumption of live probiotic bacteria, or their enrichment by prebiotics, exhibit limited efficacy. Recently, a novel therapeutic approach has been suggested based on metabolites secreted, modulated or degraded by the microbiome. As many of the host-microorganism interactions pertaining to human health are mediated by metabolites, this approach may be able to provide therapeutic efficacy while overcoming caveats of current microbiome-targeting therapies, such as colonization resistance and inter-individual variation in microbial composition...
May 25, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/28529929/novel-and-effective-therapeutic-regimens-for-helicobacter-pylori-in-an-era-of-increasing-antibiotic-resistance
#11
REVIEW
Yi Hu, Yin Zhu, Nong-Hua Lu
Helicobacter pylori (H. pylori) is a common gastrointestinal bacterial strain closely associated with the incidence of chronic gastritis, peptic ulcers, gastric mucosa-associated lymphoid tissue lymphoma, and gastric cancer. A current research and clinical challenge is the increased rate of antibiotic resistance in H. pylori, which has led to a decreased H. pylori eradication rate. In this article, we review recent H. pylori infection and reinfection rates and H. pylori resistance to antibiotics, and we discuss the pertinent treatments...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28520475/kombucha-multimicrobial-community-under-simulated-spaceflight-and-martian-conditions
#12
O Podolich, I Zaets, O Kukharenko, I Orlovska, O Reva, L Khirunenko, M Sosnin, A Haidak, S Shpylova, E Rabbow, M Skoryk, M Kremenskoy, R Demets, N Kozyrovska, J-P de Vera
Kombucha microbial community (KMC) produces a cellulose-based biopolymer of industrial importance and a probiotic beverage. KMC-derived cellulose-based pellicle film is known as a highly adaptive microbial macrocolony-a stratified community of prokaryotes and eukaryotes. In the framework of the multipurpose international astrobiological project "BIOlogy and Mars Experiment (BIOMEX)," which aims to study the vitality of prokaryotic and eukaryotic organisms and the stability of selected biomarkers in low Earth orbit and in a Mars-like environment, a cellulose polymer structural integrity will be assessed as a biomarker and biotechnological nanomaterial...
May 2017: Astrobiology
https://www.readbyqxmd.com/read/28511691/tomato-root-microbiota-and-phytophthora-parasitica-associated-disease
#13
Marie Larousse, Corinne Rancurel, Camille Syska, Ferran Palero, Catherine Etienne, Benoît Industri, Xavier Nesme, Marc Bardin, Eric Galiana
BACKGROUND: Interactions between pathogenic oomycetes and microbiota residing on the surface of the host plant root are unknown, despite being critical to inoculum constitution. The nature of these interactions was explored for the polyphagous and telluric species Phytophthora parasitica. RESULTS: Composition of the rhizospheric microbiota of Solanum lycopersicum was characterized using deep re-sequencing of 16S rRNA gene to analyze tomato roots either free of or partly covered with P...
May 16, 2017: Microbiome
https://www.readbyqxmd.com/read/28470579/does-probiotic-supplementation-affect-pulmonary-exacerbation-and-intestinal-inflammation-in-cystic-fibrosis-a-systematic-review-of-randomized-clinical-trials
#14
REVIEW
Zeinab Nikniaz, Leila Nikniaz, Nemat Bilan, Mohammad Hossein Somi, Elnaz Faramarzi
BACKGROUND: Patients with cystic fibrosis (CF) usually have abnormal intestinal microbiota due to massive exposure to antibiotics. Probiotics could modify the gut microbiota and hence may affect CF management. So the aim of present systematic review was evaluation of the efficacy and safety of probiotic supplementation for the management of cystic fibrosis. DATA SOURCES: We searched PubMed, Science Direct, Google Scholar, Springer Cochrane Library Databases until January 2016 for randomized controlled trials (RCTs) performed in pediatric or adult populations related to the study aim...
April 29, 2017: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/28453589/-effects-of-prebiotics-and-probiotics-on-gastrointestinal-tract-lymphoid-tissue-in-hiv-infected-patients
#15
Manuel G Feria, Natalia A Taborda, Juan C Hernandez, María T Rugeles
HIV infection induces alterations in almost all immune cell populations, mainly in CD4+ T cells, leading to the development of opportunistic infections. The gut-associated lymphoid tissue (GALT) constitutes the most important site for viral replication, because the main target cells, memory T-cells, reside in this tissue. It is currently known that alterations in GALT are critical during the course of the infection, as HIV-1 induces loss of tissue integrity and promotes translocation of microbial products from the intestinal lumen to the systemic circulation, leading to a persistent immune activation state and immune exhaustion...
February 2017: Revista Médica de Chile
https://www.readbyqxmd.com/read/28445681/restoring-the-microbiome-in-critically-ill-patients-are-probiotics-our-true-friends-when-we-are-seriously-ill
#16
William Manzanares, Pascal L Langlois, Paul E Wischmeyer
No abstract text is available yet for this article.
May 2017: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/28444216/dietary-metabolites-derived-from-gut-microbiota-critical-modulators-of-epigenetic-changes-in-mammals
#17
Mohd Iqbal Bhat, Rajeev Kapila
The mammalian gastrointestinal tract harbors trillions of commensal microorganisms, collectively known as the microbiota. The microbiota is a critical source of environmental stimuli and, thus, has a tremendous impact on the health of the host. The microbes within the microbiota regulate homeostasis within the gut, and any alteration in their composition can lead to disorders that include inflammatory bowel disease, allergy, autoimmune disease, diabetes, mental disorders, and cancer. Hence, restoration of the gut flora following changes or imbalance is imperative for the host...
May 1, 2017: Nutrition Reviews
https://www.readbyqxmd.com/read/28409534/bifidobacterium-animalis-subsp-lactis-420-mitigates-the-pathological-impact-of-myocardial-infarction-in-the-mouse
#18
C A Danilo, E Constantopoulos, L A McKee, H Chen, J A Regan, Y Lipovka, S Lahtinen, L K Stenman, T-V V Nguyen, K P Doyle, M J Slepian, Z I Khalpey, J P Konhilas
There is a growing appreciation that our microbial environment in the gut plays a critical role in the maintenance of health and the pathogenesis of disease. Probiotic, beneficial gut microbes, administration can directly attenuate cardiac injury and post-myocardial infarction (MI) remodelling, yet the mechanisms of cardioprotection are unknown. We hypothesised that administration of Bifidobacterium animalis subsp. lactis 420 (B420), a probiotic with known anti-inflammatory properties, to mice will mitigate the pathological impact of MI, and that anti-inflammatory T regulatory (Treg) immune cells are necessary to impart protection against MI as a result of B420 administration...
April 26, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28370715/l-fermentum-cect-5716-prevents-stress-induced-intestinal-barrier-dysfunction-in-newborn-rats
#19
T Vanhaecke, P Aubert, P-A Grohard, T Durand, P Hulin, P Paul-Gilloteaux, A Fournier, F Docagne, A Ligneul, C Fressange-Mazda, P Naveilhan, H Boudin, P Le Ruyet, M Neunlist
BACKGROUND: Intestinal epithelial barrier (IEB) dysfunction plays a critical role in various intestinal disorders affecting infants and children, including the development of food allergies and colitis. Recent studies highlighted the role of probiotics in regulating IEB functions and behavior in adults, but their effects in the newborn remain largely unknown. We therefore characterized in rat pups, the impact of Lactobacillus fermentum CECT 5716 (L. fermentum) on stress-induced IEB dysfunction, systemic immune response and exploratory behavior...
March 31, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28363168/gut-microbiota-and-renal-transplant-outcome
#20
REVIEW
Mohammadreza Ardalan, Sepideh Zununi Vahed
Gaining long-term graft function and patient survival remain a critical challenge following kidney transplantation. Genetic and environmental factors do not completely account for the individual's graft outcome. Recently, it is reported that gut microbial community (microbiota) is associated with complications in kidney allograft recipients, as well. Commensal microbiota plays a significant role in the immunomodulation of transplant recipient responses. Different factors can disrupt the reciprocal interaction between microbiota and the host immune responses and lead to infection and rejection complications in the organ recipient...
June 2017: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
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