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Lactobacillus reuteri

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https://www.readbyqxmd.com/read/28917668/gut-microbe-mediated-suppression-of-inflammation-associated-colon-carcinogenesis-by-luminal-histamine-production
#1
Chunxu Gao, Bhanu Priya Ganesh, Zhongcheng Shi, Rajesh Rasik Shah, Robert Fultz, Angela Major, Susan Venable, Monica Lugo, Kathleen Hoch, Xiaowei Chen, Anthony Haag, Timothy C Wang, James Versalovic
Microbiome-mediated suppression of carcinogenesis may open new avenues for identification of therapeutic targets and prevention strategies in oncology. Histidine decarboxylase (HDC) deficiency has been shown to promote inflammation-associated colorectal cancer by accumulation of CD11b(+)Gr-1(+) immature myeloid cells, indicating a potential antitumorigenic effect of histamine. Here, we demonstrate that administration of hdc(+)Lactobacillus reuteri in the gut resulted in luminal hdc gene expression and histamine production in the intestines of Hdc(-/-) mice...
September 6, 2017: American Journal of Pathology
https://www.readbyqxmd.com/read/28901907/isolates-of-lactobacillus-plantarum-and-l-reuteri-display-greater-antiproliferative-and-antipathogenic-activity-than-other-lactobacillus-isolates
#2
Meysam Hasannejad Bibalan, Morteza Eshaghi, Mahdi Rohani, Maryam Esghaei, Davood Darban-Sarokhalil, Mohammad R Pourshafie, Malihe Talebi
PURPOSE: Lactic acid bacteria (LAB) have been associated with many beneficial effects in human digestive physiology. The aim of this study was to evaluate such effect, including attachment, antiproliferation and anti-pathogenic/antibacterial/antimicrobial properties of LAB isolated from healthy humans. METHODOLOGY: Thirteen isolates, obtained from fecal samples of healthy individuals, were identified by phenotypic and molecular methods. Human colon adenocarcinoma cell line HT-29 and the cell proliferation kit II (XTT) assay were used for examination of the Lactobacillus adherence and antiproliferative activity, respectively...
September 13, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28901888/effects-of-oral-lactobacillus-administration-on-antioxidant-activities-and-cd4-cd25-forkhead-box-p3-foxp3-t-cells-in-nzb-w-f1-mice
#3
Bor-Show Tzang, Chung-Hsien Liu, Kuo-Ching Hsu, Yi-Hsing Chen, Chih-Yang Huang, Tsai-Ching Hsu
Systemic lupus erythematosus (SLE) is an autoimmune disease that is characterised by a dysregulation of the immune system, which causes inflammation responses, excessive oxidative stress and a reduction in the number of cluster of differentiation (CD)4+CD25+forkhead box P3 (FoxP3)+ T cells. Supplementation with certain Lactobacillus strains has been suggested to be beneficial in the comprehensive treatment of SLE. However, little is known about the effect and mechanism of certain Lactobacillus strains on SLE...
September 2017: British Journal of Nutrition
https://www.readbyqxmd.com/read/28892763/passion-fruit-by-product-and-fructooligosaccharides-stimulate-the-growth-and-folate-production-by-starter-and-probiotic-cultures-in-fermented-soymilk
#4
Marcela Albuquerque Cavalcanti Albuquerque, Raquel Bedani, Jean Guy LeBlanc, Susana Marta Isay Saad
Two starter cultures (Streptococcus (St.) thermophilus ST-M6 and TA-40) and five probiotic strains (St. thermophilus TH-4, Lactobacillus (Lb.) acidophilus LA-5, Lb. rhamnosus LGG, Lb. fermentum PCC, and Lb. reuteri RC-14) were used to ferment different soymilk formulations supplemented with passion fruit by-product and/or fructo-oligosaccharides (FOS) with the aim of increasing folate concentrations. Growth and folate production of individual strains were evaluated and the results used to select co-cultures...
September 5, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28873688/combined-effects-of-holy-basil-essential-oil-and-inlet-temperature-on-lipid-peroxidation-and-survival-of-lactobacillus-reuteri-kub-ac5-during-spray-drying
#5
Akkaratch Rodklongtan, Pakamon Chitprasert
Lipid peroxidation induced by oxidative stress plays an important role in reducing probiotic survival during spray drying. In this study, the probiotic Lactobacillus reuteri KUB-AC5 was co-encapsulated with holy basil essential oil, HBEO (0, 6, and 12mg/ml), by spray drying using skim milk at inlet air temperatures of 130, 140, and 150°C. The microcapsule properties in terms of morphology, size, moisture content, water activity, surface oil, microencapsulation efficiency, antioxidant activity, lipid peroxidation, and cell survival were determined...
October 2017: Food Research International
https://www.readbyqxmd.com/read/28873609/in-vitro-investigation-of-anticancer-and-ace-inhibiting-activity-%C3%AE-amylase-and-%C3%AE-glucosidase-inhibition-and-antioxidant-activity-of-camel-milk-fermented-with-camel-milk-probiotic-a-comparative-study-with-fermented-bovine-milk
#6
Mutamed Ayyash, Amna K Al-Nuaimi, Suheir Al-Mahadin, Shao-Quan Liu
This study aimed to investigate in vitro the health-promoting benefits (anticancer activity, α-amylase and α-glucosidase inhibition, angiotensin-converting-enzyme (ACE)-inhibition, antioxidant and proteolytic activity) of camel milk fermented with indigenous probiotic strains of Lactobacillus spp., compared with fermented bovine milk. The three camel milk probiotic strains Lb. reuteri-KX881777, Lb. plantarum-KX881772, Lb. plantarum-KX881779 and a control strain Lb. plantarum DSM2468 were employed to ferment camel and bovine milks separately...
January 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/28858247/probiotic-supplementation-in-preterm-feeding-intolerance-and-hospital-cost
#7
Flavia Indrio, Giuseppe Riezzo, Silvio Tafuri, Maria Ficarella, Barbara Carlucci, Massimo Bisceglia, Lorenzo Polimeno, Ruggiero Francavilla
We hypothesized that giving the probiotic strain Lactobacillus reuteri (L. reuteri) DSM 17938 to preterm, formula-fed infants would prevent an early traumatic intestinal inflammatory insult modulating intestinal cytokine profile and reducing the onset of feeding intolerance. Newborn were randomly allocated during the first 48 h of life to receive either daily probiotic (10⁸ colony forming units (CFUs) of L. reuteri DSM 17938) or placebo for one month. All the newborns underwent to gastric ultrasound for the measurement of gastric emptying time...
August 31, 2017: Nutrients
https://www.readbyqxmd.com/read/28856907/to-add-or-not-to-add-probiotics-to-infant-formulae-an-updated-systematic-review
#8
A Skórka, M Pieścik-Lech, M Kołodziej, H Szajewska
We updated evidence on the effects of the administration of probiotic-supplemented infant formulae (IF) compared with unsupplemented IF. Five databases were searched up to September 2016 for randomised controlled trials. Twenty publications were identified, including five new RCTs. Supplementation of IF with Bifidobacterium lactis Bb12, either alone or with Streptococcus thermophilus, had no effect on growth, respiratory illness, antibiotic use, stool frequency or consistency. However, there was a significant reduction in the number of episodes of gastrointestinal infections (Bb12) and a lower frequency of colic or irritability (when both strains were used)...
August 31, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28855510/mining-novel-starch-converting-glycoside-hydrolase-70-enzymes-from-the-nestl%C3%A3-culture-collection-genome-database-the-lactobacillus-reuteri-ncc-2613-gtfb
#9
Joana Gangoiti, Sander S van Leeuwen, Xiangfeng Meng, Stéphane Duboux, Christina Vafiadi, Tjaard Pijning, Lubbert Dijkhuizen
The Glycoside hydrolase (GH) family 70 originally was established for glucansucrases of lactic acid bacteria (LAB) converting sucrose into α-glucan polymers. In recent years we have identified 3 subfamilies of GH70 enzymes (designated GtfB, GtfC and GtfD) as 4,6-α-glucanotransferases, cleaving (α1 → 4)-linkages in maltodextrins/starch and synthesizing new (α1 → 6)-linkages. In this work, 106 putative GtfBs were identified in the Nestlé Culture Collection genome database with ~2700 genomes, and the L...
August 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28835355/efficacy-of-lactobacillus-reuteri-dsm-17938-for-the-treatment-of-acute-gastroenteritis-in-children-protocol-of-a-randomized-controlled-trial
#10
Henryk Szymański, Hania Szajewska
BACKGROUND: Acute gastroenteritis (AGE) is one of the most common diseases among children. Oral rehydration therapy is the key treatment. However, despite proven efficacy, it remains underused. This is because oral rehydration solution neither reduces the frequency of bowel movements and fluid loss nor shortens the duration of illness. Hence, there is interest in adjunctive treatments. According to the 2014 guidelines developed by the European Society for Paediatric Gastroenterology, Hepatology and Nutrition, the use of the following probiotics may be considered in the management of children with AGE in addition to rehydration therapy: Lactobacillus rhamnosus GG (low quality of evidence; strong recommendation) and Saccharomyces boulardii (low quality of evidence; strong recommendation)...
August 23, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28820096/lactobacillus-caviae-sp-nov-an-obligately-heterofermentative-bacterium-isolated-from-the-oral-cavity-of-a-guinea-pig-cavia-aperea-f-porcellus
#11
Jiri Killer, Radko Pechar, Pavel Švec, Hana Salmonová, Roman Švejstil, Martina Geigerová, Vojtěch Rada, Eva Vlková, Chahrazed Mekadim
A Gram-stain-positive, facultatively anaerobic, and catalase- and oxidase-negative bacterial strain designated MOZM2T, having 98.4 % 16S rRNA gene sequence identity with Lactobacillus reuteri DSM 20016T, was isolated from a swab of the oral cavity of a home-bred guinea pig. Comparative analyses based on the hsp60, pheS and tuf genes confirmed L. reuteri as its closest relative species, with calculated sequence similarities of 92.8, 88.8 and 96.9 %, respectively. DNA-DNA hybridisation revealed a 42 % degree of genetic similarity between the novel strain and L...
August 2017: International Journal of Systematic and Evolutionary Microbiology
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
#12
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
#13
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
#14
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
#15
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
#16
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
#17
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
#18
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...
September 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
#19
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 L. 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
#20
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
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