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lactobacillus rhamnosus

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https://www.readbyqxmd.com/read/28822542/short-communication-a-study-of-lactobacillus-isolates-adherence-to-and-influence-on-membrane-integrity-of-human-caco-2-cells
#1
Neethu M Jose, Craig R Bunt, Arlene McDowell, Jasper Z S Chiu, Malik A Hussain
The selection criteria of ideal probiotic bacteria are complex and involve many factors. One key criterion is based on the ability of the probiotic bacteria to adhere to the epithelial lining of the gastrointestinal tract. The objective of this study was to evaluate and compare the adherence and influence on membrane integrity of 2 selected lactobacilli isolates-Lactobacillus rhamnosus MI13 (dairy food origin) and L. plantarum RC2 (bovine rumen origin)-to Caco-2 cells in the presence and absence of Escherichia coli...
August 16, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28818050/administration-of-two-probiotic-strains-during-early-childhood-does-not-affect-the-endogenous-gut-microbiota-composition-despite-probiotic-proliferation
#2
Martin Frederik Laursen, Rikke Pilmann Laursen, Anni Larnkjær, Kim F Michaelsen, Martin Iain Bahl, Tine Rask Licht
BACKGROUND: Probiotics are increasingly applied to prevent and treat a range of infectious, immune related and gastrointestinal diseases. Despite this, the mechanisms behind the putative effects of probiotics are poorly understood. One of the suggested modes of probiotic action is modulation of the endogenous gut microbiota, however probiotic intervention studies in adults have failed to show significant effects on gut microbiota composition. The gut microbiota of young children is known to be unstable and more responsive to external factors than that of adults...
August 17, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28815811/study-of-the-effects-of-spray-drying-in-whey-starch-on-the-probiotic-capacity-of-lactobacillus-rhamnosus-64-in-the-gut-of-mice
#3
L Lavari, P Burns, R Páez, J Reinheimer, G Vinderola
AIMS: To evaluate the effects of spray-drying of Lactobacillus rhamnosus 64 on its capacity to modulate the gut immune response and on the attenuation of TNBS-induced colitis in mice. METHODS AND RESULTS: L. rhamnosus 64 was spray-dried in cheese whey-starch solution and administered to mice for three, six or ten consecutive days. Peritoneal macrophage phagocytic activity, secretory-IgA (S-IgA) levels in the small intestinal fluid and TNFα, IFNγ, IL-10, IL-6 and IL-2 levels in homogenates of the small and large intestine were determined...
August 17, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/28803012/effect-of-fermented-milk-containing-lactobacillus-rhamnosus-sd11-on-oral-microbiota-of-healthy-volunteers-a-randomized-clinical-trial
#4
P Rungsri, N Akkarachaneeyakorn, M Wongsuwanlert, S Piwat, P Nantarakchaikul, R Teanpaisan
The aims of this study were to evaluate whether short-term consumption of fermented milk containing Lactobacillus rhamnosus SD11 affected levels of oral microbiota in vivo and whether L. rhamnosus SD11 could colonize in the human mouth. We also monitored for potential side effects of the probiotic. The applicability of using L. rhamnosus SD11 compared with Lactobacillus bulgaricus as a starter culture for fermented milk was evaluated. After informed consent, 43 healthy young adults were recruited and randomly assigned to either the probiotic or control group and received fermented milk containing L...
August 9, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/28801270/immunomodulatory-effects-and-anti-candida-activity-of-lactobacilli-in-macrophages-and-in-invertebrate-model-of-galleria-mellonella
#5
Felipe Eduardo de Oliveira, Rodnei Dennis Rossoni, Patricia Pimentel de Barros, Barbara Evelyn Begnini, Juliana Campos Junqueira, Antonio Olavo Cardoso Jorge, Mariella Vieira Pereira Leão, Luciane Dias de Oliveira
Due to the growing number of multi-resistant Candida spp., adjuvant treatments that may help combat these fungal pathogens are relevant and useful. This study evaluated the immunomodulation and anti-Candida activity of Lactobacillus rhamnosus (LR), Lactobacillus acidophilus and Lactobacillus paracasei suspensions, either single- or multiple-strain, in mouse macrophages (RAW 264.7) and Galleria mellonella (GM). Mouse macrophages were activated by different lactobacilli suspensions and challenged with C. albicans (CA)...
August 8, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28792488/effect-of-lactobacillus-on-body-weight-and-body-fat-in-overweight-subjects-a-systematic-review-of-randomized-controlled-clinical-trials
#6
REVIEW
L Crovesy, M Ostrowski, D M T P Ferreira, E L Rosado, M Soares-Mota
Gut microbiota is important for maintaining body weight. Modulation of gut microbiota by probiotics may result in weight loss and thus help in obesity treatment. The aim of this systematic review was to evaluate the effects of Lactobacillus on weight loss and/or fat mass in overweight adults. A search was performed on the Medline (PubMed) and Scopus electronic databases using the search terms: 'probiotics', 'Lactobacillus, 'obesity', 'body weight changes', 'weight loss', 'overweight', 'abdominal obesity', 'body composition', 'body weight', 'body fat' and 'fat mass'...
July 10, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28789560/milk-fermented-by-lactobacillus-species-from-brazilian-artisanal-cheese-protect-germ-free-mice-against-salmonella-typhimurium-infection
#7
L B Acurcio, S H C Sandes, R W Bastos, F M Sant'anna, S H S P Pedroso, D C Reis, Á C Nunes, G D Cassali, M R Souza, J R Nicoli
Ingestion of milks fermented by Lactobacillus strains showing probiotic properties is an important tool to maintain gastrointestinal health. In this study, Lactobacillus rhamnosus D1 and Lactobacillus plantarum B7, isolated from Brazilian artisanal cheese, were used as starters for the functional fermented milks to assess their probiotic properties in a gnotobiotic animal model. Male germ-free Swiss mice received a single oral dose of milk fermented by each sample, and were challenged with Salmonella Typhimurium five days afterwards...
August 9, 2017: Beneficial Microbes
https://www.readbyqxmd.com/read/28783535/the-individual-contribution-of-starter-and-non-starter-lactic-acid-bacteria-to-the-volatile-organic-compound-composition-of-caciocavallo-palermitano-cheese
#8
Valeria Guarrasi, Ciro Sannino, Marta Moschetti, Adriana Bonanno, Antonino Di Grigoli, Luca Settanni
The contribution of two starter (Lactobacillus delbrueckii and Streptococcus thermophilus) and nine non-starter (Enterococcus casselliflavus, Enterococcus faecalis, Enterococcus durans, Enterococcus gallinarum, Lactobacillus casei, Lactobacillus paracasei, Lactobacillus rhamnosus, Pediococcus acidilactici and Pediococcus pentosaceus) species of lactic acid bacteria (LAB) to the volatile organic compounds (VOCs) of Caciocavallo Palermitano cheese was investigated. The strains used in this study were isolated during the production/ripening of the stretched cheese and tested in a cheese-based medium (CBM)...
July 31, 2017: International Journal of Food 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
#9
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/28772020/interplay-between-lactobacillus-rhamnosus-gg-and-candida-and-the-involvement-of-exopolysaccharides
#10
Camille N Allonsius, Marianne F L van den Broek, Ilke De Boeck, Shari Kiekens, Eline F M Oerlemans, Filip Kiekens, Kenn Foubert, Dieter Vandenheuvel, Paul Cos, Peter Delputte, Sarah Lebeer
A number of clinical studies have shown protective effects of lactobacilli against Candida species in the gastrointestinal tract, the urogenital tract and the oral cavity, while others did not show clear effects. Evidence on the mode of action of lactobacilli against Candida is also still lacking. In this study, the anti-Candida activity of the model probiotic strain Lactobacillus rhamnosus GG was explored in different assays to determine molecular interactions. We found that L. rhamnosus GG was able to interfere with Candida growth, morphogenesis and adhesion...
August 3, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28771188/apigenin-impacts-the-growth-of-the-gut-microbiota-and-alters-the-gene-expression-of-enterococcus
#11
Minqian Wang, Jenni Firrman, Liqing Zhang, Gustavo Arango-Argoty, Peggy Tomasula, LinShu Liu, Weidong Xiao, Kit Yam
Apigenin is a major dietary flavonoid with many bioactivities, widely distributed in plants. Apigenin reaches the colon region intact and interacts there with the human gut microbiota, however there is little research on how apigenin affects the gut bacteria. This study investigated the effect of pure apigenin on human gut bacteria, at both the single strain and community levels. The effect of apigenin on the single gut bacteria strains Bacteroides galacturonicus, Bifidobacterium catenulatum, Lactobacillus rhamnosus GG, and Enterococcus caccae, was examined by measuring their anaerobic growth profiles...
August 3, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/28771130/indigenous-lactobacilli-strains-of-food-and-human-sources-reverse-enteropathogenic-e-coli-o26-h11-induced-damage-in-intestinal-epithelial-cell-lines-effect-on-redistribution-of-tight-junction-proteins
#12
Ruchi Jariwala, Hemanti Mandal, Tamishraha Bagchi
The aim of the study was to investigate the neutralizing effect of lactobacilli isolated from indigenous food and human sources on enteropathogenic Escherichia coli (EPEC) O26 : H11-induced epithelial barrier dysfunction in vitro. This was assessed by transepithelial electrical resistance (TEER) and permeability assays using intestinal cell lines, HT-29 and Caco-2. Furthermore, the expression and distribution of tight junction (TJ) proteins were analysed by qRT-PCR and immunofluorescence assay, respectively...
August 4, 2017: Microbiology
https://www.readbyqxmd.com/read/28770173/oral-administration-of-lactobacillus-rhamnosus-gg-ameliorates-salmonella-infantis-induced-inflammation-in-a-pig-model-via-activation-of-the-il-22bp-il-22-stat3-pathway
#13
Gui-Yan Yang, Jiao Yu, Jin-Hui Su, Lian-Guo Jiao, Xiao Liu, Yao-Hong Zhu
The high rate of Salmonella enterica serovar Infantis (S. Infantis) infection poses significant risk for the development of non-typhoidal Salmonella gastroenteritis. However, efficient strategies to prevent or treat the infection remain elusive. Here, we explored the effect of the probiotic Lactobacillus rhamnosus GG (LGG) administration in preventing S. Infantis infection in a pig model. Probiotic LGG (1.0 × 10(10) CFU/day) was orally administered to newly weaned piglets for 1 week before S. Infantis challenge...
2017: Frontiers in Cellular and Infection Microbiology
https://www.readbyqxmd.com/read/28769037/mechanism-of-biofilm-mediated-stress-resistance-and-lifespan-extension-in-c-elegans
#14
Olga Smolentseva, Ivan Gusarov, Laurent Gautier, Ilya Shamovsky, Alicia S DeFrancesco, Richard Losick, Evgeny Nudler
Bacteria naturally form communities of cells known as biofilms. However the physiological roles of biofilms produced by non-pathogenic microbiota remain largely unknown. To assess the impact of a biofilm on host physiology we explored the effect of several non-pathogenic biofilm-forming bacteria on Caenorhabditis elegans. We show that biofilm formation by Bacillus subtilis, Lactobacillus rhamnosus and Pseudomonas fluorescens induces C. elegans stress resistance. Biofilm also protects against pathogenic infection and prolongs lifespan...
August 2, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28762070/systematic-review-probiotics-for-functional-constipation-in-children
#15
REVIEW
Katarzyna Wojtyniak, Hania Szajewska
We updated our 2010 systematic review on the efficacy of probiotics in the treatment of constipation in children. The MEDLINE, EMBASE, and Cochrane Library databases; clinical trial registries; and reference lists of included studies were searched to February 2017 for randomized controlled trials (RCTs) performed in children, with no language restriction. The primary outcome measure was treatment success, as defined by the investigators. We included seven RCTs with a total of 515 participants. Included trials were heterogeneous with respect to study population, probiotic strains, dosages, study duration, and follow-up...
August 1, 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28761060/administration-of-lactobacillus-salivarius-li01-or-pediococcus-pentosaceus-li05-prevents-ccl4-induced-liver-cirrhosis-by-protecting-the-intestinal-barrier-in-rats
#16
Ding Shi, Longxian Lv, Daiqiong Fang, Wenrui Wu, Chenxia Hu, Lichen Xu, Yanfei Chen, Jing Guo, Xinjun Hu, Ang Li, Feifei Guo, Jianzhong Ye, Yating Li, Dewi Andayani, Lanjuan Li
Alterations in the gut microbiome have been reported in liver cirrhosis, and probiotic interventions are considered a potential treatment strategy. This study aimed to evaluate the effects and mechanisms of Lactobacillus salivarius LI01, Pediococcus pentosaceus LI05, Lactobacillus rhamnosus GG, Clostridium butyricum MIYAIRI and Bacillus licheniformis Zhengchangsheng on CCl4-induced cirrhotic rats. Only administration of LI01 or LI05 prevented liver fibrosis and down-regulated the hepatic expression of profibrogenic genes...
July 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28758133/probiotic-lactobacillus-strains-stimulate-the-inflammatory-response-and-activate-human-macrophages
#17
L M Rocha-Ramírez, R A Pérez-Solano, S L Castañón-Alonso, S S Moreno Guerrero, A Ramírez Pacheco, M García Garibay, C Eslava
Lactobacilli have been shown to promote health functions. In this study, we analyzed the mechanism by which four different strains of probiotics affected innate immunity, such as regulation of ROS, cytokines, phagocytosis, bactericidal activity, signaling by NF-κB pp65, and TLR2 activation. The production of ROS was dependent on the concentration and species of Lactobacillus. The results obtained from the tested strains (Lactobacillus rhamnosus GG, L. rhamnosus KLSD, L. helveticus IMAU70129, and L. casei IMAU60214) showed that strains induced early proinflammatory cytokines such as IL-8,TNF-α, IL-12p70, and IL-6...
2017: Journal of Immunology Research
https://www.readbyqxmd.com/read/28757387/a-fast-pcr-based-method-for-the-characterization-of-prophage-profiles-in-strains-of-the-lactobacillus-casei-group
#18
Delfina Zaburlin, Diego J Mercanti, Andrea Quiberoni
Lysogeny is widespread among Lactobacillus strains of the casei group (L. casei, L. paracasei and L. rhamnosus), and prophages account for most strain-specific DNA. Numerous PCR based methods have been developed to detect free phages of lactic acid bacteria, but they do not take in consideration prophages. In this study, a new PCR method for the detection of lysogeny was developed using genome sequences of L. casei group strains (including BL23) and bacteriophages. Nine pairs of primers were designed to selectively amplify the highly conserved prophage iA2 (pairs #1-#3) and fragments of two groups phages of temperate origin: CL1/CL2/iLp1308/iLp84 (pairs #4 and #5) and Lrm1/J-1/PL-1/A2/AT3/Lc-Nu (pairs #6 to #9)...
July 28, 2017: Journal of Virological Methods
https://www.readbyqxmd.com/read/28756502/aciduric-strains-of-lactobacillus-reuteri-and-lactobacillus-rhamnosus-isolated-from-human-feces-have-strong-adhesion-and-aggregation-properties
#19
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/28753043/the-impact-of-storage-conditions-on-the-stability-of-lactobacillus-rhamnosus-gg-and-bifidobacterium-animalis-subsp-lactis-bb12-in-human-milk
#20
Anastasia Mantziari, Juhani Aakko, Himanshu Kumar, Satu Tölkkö, Elloise du Toit, Seppo Salminen, Erika Isolauri, Samuli Rautava
Human milk is the optimal source of complete nutrition for neonates and it also guides the development of infant gut microbiota. Importantly, human milk can be supplemented with probiotics to complement the health benefits of breastfeeding. Storage of human milk for limited periods of time is often unavoidable, but little is known about the effect of different storage conditions (temperature) on the viability of the added probiotics. Therefore, in this study, we evaluated how different storage conditions affect the viability of two specific widely used probiotics, Lactobacillus rhamnosus GG (LGG) and Bifidobacterium animalis subsp...
July 28, 2017: Breastfeeding Medicine: the Official Journal of the Academy of Breastfeeding Medicine
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