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Lactobacillus reuteri

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https://www.readbyqxmd.com/read/28777955/supplementation-of-lactobacilli-improves-growth-regulates-microbiota-composition-and-suppresses-skeletal-anomalies-in-juvenile-pike-perch-sander-lucioperca-reared-in-recirculating-aquaculture-system-ras-a-pilot-study
#1
Uros Ljubobratovic, Dejana Kosanovic, Goran Vukotic, Zsuzsanna Molnar, Nemanja Stanisavljevic, Tijana Ristovic, Geza Peter, Jovanka Lukic, Galina Jeney
This research aimed to test the effects of lactobacilli, applied to cultured pike-perch, either through hydrolyzed OTOHIME fish diet, or through Artemia nauplii, on fish growth, microbiota balance and skeletal development. On the 12th Day Post Hatching (DPH) fish were divided into following treatment groups: two groups received the combination of OTOHIME and nauplii enriched either with Lactobacillus paracasei BGHN14+Lactobacillus rhamnosus BGT10 or with Lactobacillus reuteri BGGO6-55+Lactobacillus salivarius BGHO1, and one group received OTOHIME hydrolyzed by BGHN14+BGT10 and non-enriched nauplii...
July 24, 2017: Research in Veterinary Science
https://www.readbyqxmd.com/read/28775213/lactobacillus-reuteri-induces-gut-intraepithelial-cd4-cd8%C3%AE-%C3%AE-t-cells
#2
Luisa Cervantes-Barragan, Jiani N Chai, Ma Diarey Tianero, Blanda DiLuccia, Philip P Ahern, Joseph Merriman, Victor S Cortez, Michael G Caparon, Mohamed S Donia, Susan Gilfillan, Marina Cella, Jeffrey I Gordon, Chyi-Song Hsieh, Marco Colonna
The small intestine contains CD4(+)CD8αα(+) double-positive intraepithelial T lymphocytes (DP IELs), which originate from intestinal CD4(+) T cells through downregulation of the transcription factor ThPOK and have regulatory functions. DP IELs are absent in germ-free mice, suggesting that their differentiation depends on microbial factors. We found that DP IEL numbers in mice varied in different vivaria, correlating with the presence of Lactobacillus reuteri This species induced DP IELs in germ-free mice and conventionally raised mice lacking these cells...
August 3, 2017: Science
https://www.readbyqxmd.com/read/28760934/next-generation-probiotics-targeting-clostridium-difficile-through-precursor-directed-antimicrobial-biosynthesis
#3
Jennifer K Spinler, Jennifer Auchtung, Aaron Brown, Prapaporn Boonma, Numan Oezguen, Caná L Ross, Ruth Ann Luna, Jessica Runge, James Versalovic, Alex Peniche, Sara M Dann, Robert A Britton, Anthony Haag, Tor C Savidge
Integration of antibiotic and probiotic therapy has the potential to lessen the public health burden to antimicrobial-associated diseases. Clostridium difficile infection (CDI) represents an important example where rational design of next generation probiotics is being actively pursued to prevent disease recurrence. Because intrinsic resistance to clinically relevant CDI antibiotics (vancomycin, metronidazole, and fidaxomicin) is a desired trait in such probiotic species, we screened several bacteria and identified Lactobacillus reuteri as a promising candidate for adjunct therapy...
July 31, 2017: Infection and Immunity
https://www.readbyqxmd.com/read/28756502/aciduric-strains-of-lactobacillus-reuteri-and-lactobacillus-rhamnosus-isolated-from-human-feces-have-strong-adhesion-and-aggregation-properties
#4
Kyle B Klopper, Shelly M Deane, Leon M T Dicks
Human feces were streaked onto MRS Agar adjusted to pH 2.5, 3.0, and 6.4, respectively, and medium supplemented with 1.0% (w/v) bile salts. Two aciduric strains, identified as Lactobacillus reuteri HFI-LD5 and Lactobacillus rhamnosus HFI-K2 (based on 16S rDNA and recA sequences), were non-hemolytic and did not hydrolyze mucin. The surface of Lactobacillus reuteri HFI-LD5 cells has a weak negative charge, whereas Lactobacillus rhamnosus HFI-K2 has acidic and basic properties, and produces exopolysaccharides (EPS)...
July 29, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28756115/the-effects-of-lactobacillus-reuteri-probiotics-combined-with-azithromycin-on-peri-implantitis-a-randomized-placebo-controlled-study
#5
Hiroaki Tada, Chihiro Masaki, Shintaro Tsuka, Taro Mukaibo, Yusuke Kondo, Ryuji Hosokawa
PURPOSE: The aim of this randomized placebo-controlled clinical study was to investigate the effects of a probiotic tablet containing Lactobacillus reuteri in peri-implantitis patients. METHODS: Subjects comprised 30 patients with mild to moderate peri-implantitis. A baseline clinical examination and microbiological assessment were conducted, followed by an antibiotics treatment (azithromycin, 500mg, once a day for 3 days). Subjects were divided into probiotic and placebo groups...
July 26, 2017: Journal of Prosthodontic Research
https://www.readbyqxmd.com/read/28745328/diacylglycerol-kinase-synthesized-by-commensal-lactobacillus-reuteri-diminishes-protein-kinase-c-phosphorylation-and-histamine-mediated-signaling-in-the-mammalian-intestinal-epithelium
#6
B P Ganesh, A Hall, S Ayyaswamy, J W Nelson, R Fultz, A Major, A Haag, M Esparza, M Lugo, S Venable, M Whary, J G Fox, J Versalovic
Lactobacillus reuteri 6475 (Lr) of the human microbiome synthesizes histamine and can suppress inflammation via type 2 histamine receptor (H2R) activation in the mammalian intestine. Gut microbes such as Lr promote H2R signaling and may suppress H1R proinflammatory signaling pathways in parallel by unknown mechanisms. In this study, we identified a soluble bacterial enzyme known as diacylglycerol kinase (Dgk) from Lr that is secreted into the extracellular milieu and presumably into the intestinal lumen. DgK diminishes diacylglycerol (DAG) quantities in mammalian cells by promoting its metabolic conversion and causing reduced protein kinase C phosphorylation (pPKC) as a net effect in mammalian cells...
July 26, 2017: Mucosal Immunology
https://www.readbyqxmd.com/read/28734224/structural-characterization-of-glucosylated-lactose-derivatives-synthesized-by-the-lactobacillus-reuteri-gtfa-and-gtf180-glucansucrase-enzymes
#7
Hien T T Pham, Lubbert Dijkhuizen, Sander S van Leeuwen
Glucansucrase enzymes from lactic acid bacteria are receiving strong interest because of their wide range of gluco-oligosaccharide and polysaccharide products from sucrose, some of which have prebiotic potential. Glucansucrases GtfA and Gtf180 from Lactobacillus reuteri strains are known to convert sucrose into α-glucans with different types of linkages, but also to use other molecules as acceptor substrates. Here we report that incubation of (N-terminally truncated versions of) these enzymes with lactose plus sucrose resulted in synthesis of at least 5 glucosylated lactose products of a degree of polymerization (DP) of 3-4...
July 8, 2017: Carbohydrate Research
https://www.readbyqxmd.com/read/28712129/lactobacillus-reuteri-dsm-17938-and-a-placebo-both-significantly-reduced-symptoms-in-children-with-functional-abdominal-pain
#8
M Maragkoudaki, G Chouliaras, R Orel, A Horvath, H Szajewska, A Papadopoulou
AIM: Lactobacillus reuteri is a Gram-positive bacterium that naturally inhabits the human intestinal tract. This study assessed how effectively the probiotic Lactobacilllus reuteri DSM 17938 managed childhood functional abdominal pain (FAP). METHODS: We recruited 54 children with a mean age 9.1±3.8 years, who were diagnosed with FAP in the outpatient clinics of three university hospitals in Greece, Slovenia and Poland, according to the Rome III criteria, from January 2013 to December 2015...
July 16, 2017: Acta Paediatrica
https://www.readbyqxmd.com/read/28712023/selection-of-potential-probiotic-lactobacillus-with-inhibitory-activity-against-salmonella-and-fecal-coliform-bacteria
#9
Mattika Abhisingha, Jureeporn Dumnil, Chetsadaporn Pitaksutheepong
Three hundred and sixty presumptive lactic acid bacteria (LAB) isolated from pregnant sows, newborn, suckling, and weaned piglets were preliminarily screened for anti-Salmonella activity. Fifty-eight isolates consisting of Lactobacillus reuteri (n = 32), Lactobacillus salivarius (n = 10), Lactobacillus mucosae (n = 8), Lactobacillus johnsonii (n = 5), and Lactobacillus crispatus (n = 3) were selected and further characterized for probiotic properties including production of antimicrobial substances, acid and bile tolerance, and cell adherence to Caco-2 cells...
July 15, 2017: Probiotics and Antimicrobial Proteins
https://www.readbyqxmd.com/read/28705785/determination-of-certain-bacterial-groups-in-gut-microbiota-and-endotoxin-levels-in-patients-with-nonalcoholic-steatohepatitis
#10
Ceren Özkul, Meltem Yalınay, Tarkan Karakan, Güldal Yılmaz
BACKGROUND/AIMS: In recent years, the role of the gut microbiota has emerged in several diseases. Herein we aimed to determine the fecal microbiota, endotoxin levels, and inflammation markers in patients with nonalcoholic steatohepatitis (NASH) and healthy controls. MATERIALS AND METHODS: A total of 46 NASH patients and 38 healthy controls were included. NASH patients were diagnosed according to the steatosis, activity, and fibrosis score/fatty liver inhibition of progression algorithm...
July 13, 2017: Turkish Journal of Gastroenterology: the Official Journal of Turkish Society of Gastroenterology
https://www.readbyqxmd.com/read/28697806/control-of-lupus-nephritis-by-changes-of-gut-microbiota
#11
Qinghui Mu, Husen Zhang, Xiaofeng Liao, Kaisen Lin, Hualan Liu, Michael R Edwards, S Ansar Ahmed, Ruoxi Yuan, Liwu Li, Thomas E Cecere, David B Branson, Jay L Kirby, Poorna Goswami, Caroline M Leeth, Kaitlin A Read, Kenneth J Oestreich, Miranda D Vieson, Christopher M Reilly, Xin M Luo
BACKGROUND: Systemic lupus erythematosus, characterized by persistent inflammation, is a complex autoimmune disorder with no known cure. Immunosuppressants used in treatment put patients at a higher risk of infections. New knowledge of disease modulators, such as symbiotic bacteria, can enable fine-tuning of parts of the immune system, rather than suppressing it altogether. RESULTS: Dysbiosis of gut microbiota promotes autoimmune disorders that damage extraintestinal organs...
July 11, 2017: Microbiome
https://www.readbyqxmd.com/read/28691473/oral-probiotics-in-the-management-of-gingivitis-in-diabetic-patients-a-double-blinded-randomized-controlled-study
#12
S Sabatini, D Lauritano, V Candotto, F J Silvestre, G M Nardi
Diabetic patients are more prone to develop infections such as periodontal diseases. Bacteriotherapy with the concept of using good bacterial strains to replace the pathogenic ones emerged as a fascinating field due to the increasing incidence of antibiotic resistance. The aim of this study was to evaluate if a particular combination of probiotics (Lactobacillus Reuteri DSM 17938 and Lactobaciullus Reuteri ATCC PTA 5289) is useful in treating gingivitis in diabetic patients. Eighty adult patients with diagnosis of controlled diabetes type II and gingivitis were enrolled for this study and randomized in two groups...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28690597/close-to-the-edge-growth-restrained-by-the-nad-p-h-atp-formation-flux-ratio
#13
Ed W J van Niel, Basti Bergdahl, Bärbel Hahn-Hägerdal
Most fermentative microorganisms grow well-under anaerobic conditions managing a balanced redox and appropriate energy metabolism, but a few species do exist in which cells have to cope with inadequate energy recovery or capture and/or redox balancing. Two cases of these species, i.e., the metabolically engineered Saccharomyces cerevisiae enabling it to ferment xylose and Lactobacillus reuteri fermenting glucose via the phosphoketolase pathway, are here used to introduce a quantification parameter to capture what limits the growth rate of these microorganisms under anaerobic conditions...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28681177/efficacy-and-safety-of-probiotic-supplemented-triple-therapy-for-eradication-of-helicobacter-pylori-in-children-a-systematic-review-and-network-meta-analysis
#14
REVIEW
Jue-Rong Feng, Fan Wang, Xiao Qiu, Lynne V McFarland, Peng-Fei Chen, Rui Zhou, Jing Liu, Qiu Zhao, Jin Li
AIM: The aim of this study was to identify the best probiotic supplementation in triple therapy for pediatric population with Helicobacter pylori infection. METHODS: Eligible trials were identified by comprehensive searches. Relative risks with 95% confidence intervals and relative ranks with P scores were assessed. RESULTS: Twenty-nine trials (3122 participants) involving 17 probiotic regimens were identified. Compared with placebo, probiotic-supplemented triple therapy significantly increased H...
July 5, 2017: European Journal of Clinical Pharmacology
https://www.readbyqxmd.com/read/28679205/metabolism-of-foodborne-heterocyclic-aromatic-amines-by-lactobacillus-reuteri-dsm-20016
#15
Falco Beer, Felix Urbat, Jan Steck, Melanie Huch, Diana Bunzel, Mirko Bunzel, Sabine E Kulling
The heterocyclic aromatic amine (HAA) 2-amino-1-methyl-6-phenylimidazo[4,5-b]pyridine (PhIP) is converted into 7-hydroxy-5-methyl-3-phenyl-6,7,8,9-tetrahydropyrido[3',2':4,5]imidazo[1,2-a]pyrimidin-5-ium chloride (PhIP-M1) via a chemical reaction with 3-hydroxypropionaldehyde or acrolein derived from glycerol by reuterin producing gut bacteria. Because it is unknown whether this reaction also applies to other HAAs, seven foodborne HAAs (2-amino-9H-pyrido[2,3-b]indole (AαC), 3-amino-1,4-dimethyl-5H-pyrido[4,3-b]indole (Trp-P-1), 2-amino-3-methyl-3H-imidazo[4,5-f]quinoline (IQ), 2-amino-3,4-dimethyl-3H-imidazo[4,5-f]quinoline (MeIQ), 2-amino-3,8-dimethyl-3H-imidazo[4,5-f]quinoxaline (MeIQx), 9H-pyrido[3,4-b]indole (norharman), and 1-methyl-9H-pyrido[3,4-b]indole (harman)) were anaerobically incubated with Lactobacillus reuteri DSM 20016 in the presence of glycerol...
August 16, 2017: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/28666384/gut-microbial-transformation-of-the-dietary-imidazoquinoxaline-mutagen-meiqx-reduces-its-cytotoxic-and-mutagenic-potency
#16
Jianbo Zhang, Michael T Empl, Clarissa Schwab, Mostafa I Fekry, Christina Engels, Mirjam Schneider, Christophe Lacroix, Pablo Steinberg, Shana J Sturla
The diverse community of microbes present in the human gut has emerged as an important factor for cancer risk, potentially by altering exposure to chemical carcinogens. In the present study, human gut bacteria were tested for their capacity to transform the carcinogenic heterocyclic amine 2-Amino-3,8-dimethylimidazo[4,5-f]quinoxaline (MeIQx). Eubacterium hallii, Lactobacillus reuteri, and Lactobacillus rossiae were able to convert MeIQx to a new microbial metabolite characterized on the basis of high resolution mass spectrometry and NMR as 9-hydroxyl-2,7-dimethyl-7,9,10,11-tetrahydropyrimido[2',1':2,3]imidazo[4,5-f]quinoxaline (MeIQx-M1), resulting from conjugation with activated glycerol...
June 28, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/28665038/efficacy-of-a-standardized-extract-of-matricariae-chamomilla-l-melissa-officinalis-l-and-tyndallized-lactobacillus-acidophilus-ha122-in-infantile-colic-an-open-randomized-controlled-trial
#17
M Martinelli, D Ummarino, F P Giugliano, E Sciorio, C Tortora, D Bruzzese, D De Giovanni, I Rutigliano, S Valenti, C Romano, A Campanozzi, E Miele, A Staiano
BACKGROUND: Infant colic (IC) is a prevalent physiological event of infants, which can disrupt the child's home environment. We aimed to investigate the effectiveness of a mixture of Matricariae chamomilla L., Melissa officinalis L. and tyndallized Lactobacillus acidophilus (HA122) compared with Lactobacillus reuteri DSM 17938 and with simethicone for the treatment of IC. METHODS: A multicenter randomized comparative study was conducted in infants with colic, according to Rome III criteria, who were randomly assigned to receive M...
June 30, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/28659878/detection-and-physicochemical-characterization-of-membrane-vesicles-mvs-of-lactobacillus-reuteri-dsm-17938
#18
Rossella Grande, Christian Celia, Gabriella Mincione, Annarita Stringaro, Luisa Di Marzio, Marisa Colone, Maria C Di Marcantonio, Luca Savino, Valentina Puca, Roberto Santoliquido, Marcello Locatelli, Raffaella Muraro, Luanne Hall-Stoodley, Paul Stoodley
Membrane vesicles (MVs) are bilayer structures which bleb from bacteria, and are important in trafficking biomolecules to other bacteria or host cells. There are few data about MVs produced by the Gram-positive commensal-derived probiotic Lactobacillus reuteri; however, MVs from this species may have potential therapeutic benefit. The aim of this study was to detect and characterize MVs produced from biofilm (bMVs), and planktonic (pMVs) phenotypes of L. reuteri DSM 17938. MVs were analyzed for structure and physicochemical characterization by Scanning Electron Microscope (SEM) and Dynamic Light Scattering (DLS)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28643742/in-vitro-activity-of-probiotic-lactobacillus-reuteri-against-gastric-cancer-progression-by-downregulation-of-urokinase-plasminogen-activator-urokinase-plasminogen-activator-receptor-gene-expression
#19
Bahareh Sadat Rasouli, Ali Ghadimi-Darsajini, Reza Nekouian, Gholam-Reza Iragian
BACKGROUND: Gastric cancer (GC) is the third leading cause of cancer death, and most patients represent metastatic phenotype at the time of diagnosis. Urokinase plasminogen activator (uPA) system is well known for its critical roles in cancer cells invasion since uPA/uPA receptor (uPAR) overexpresses in several cancers. Subsequently, suppression of uPA/uPAR gene expression improves patients overall survival and prevents cancer progression. OBJECTIVES: The aim of the current study was to investigate possible effects of live Lactobacillus reuteri as a probiotic in inhibition of GC cells proliferation and invasion...
April 2017: Journal of Cancer Research and Therapeutics
https://www.readbyqxmd.com/read/28623443/autolyse-the-cell-in-order-to-save-it-inducing-then-blocking-autolysis-as-a-strategy-for-delaying-cell-death-in-the-probiotic-lactobacillus-reuteri
#20
Tahl Zimmerman, Rabin Gyawali, Salam Ibrahim
OBJECTIVE: To examine whether choline and its derivatives can be used to preserve viable cells of Lactobacillus reuteri in autolytic models. RESULTS: A phosphate-induced autolytic model in de Man, Rogosa and Sharpe medium (MRS) was used. Viable cell counts were determined by plated on MRS-agar. Choline and hemicholinium-3 (HC-3) significantly blocked autolysis of L. reuteri at 360 mM and 4 mM, respectively. Viable cell counts corroborated these observations. Importantly, autolytically induced cells treated with choline and hemicholinium-3 were significantly more viable then even non-induced cells...
June 16, 2017: Biotechnology Letters
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