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Clostridium butyricum

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https://www.readbyqxmd.com/read/29449580/botulinum-neurotoxin-encoding-plasmids-can-be-conjugatively-transferred-to-diverse-clostridial-strains
#1
Erin M Nawrocki, Marite Bradshaw, Eric A Johnson
Most Group I Clostridium botulinum strains harbor botulinum neurotoxin (bont) genes on their chromosome, while some carry these genes (including bont/a, bont/b, and bont/f) on large plasmids. Prior work in our laboratory demonstrated that Group I BoNT plasmids were mobilized to C. botulinum recipient strains containing the Tn916 transposon. Here, we show that Tn916 is nonessential for plasmid transfer. Relying on an auxotrophic donor phenotype and a plasmid-borne selectable marker, we observed the transfer of pCLJ, a 270 kb plasmid harboring two bont genes, from its host strain to various clostridia...
February 15, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29445178/the-effect-of-clostridium-butyricum-on-symptoms-and-fecal-microbiota-in-diarrhea-dominant-irritable-bowel-syndrome-a-randomized-double-blind-placebo-controlled-trial
#2
Yi-Yuan Sun, Ming Li, Yue-Yue Li, Li-Xiang Li, Wen-Zhe Zhai, Peng Wang, Xiao-Xiao Yang, Xiang Gu, Li-Jin Song, Zhen Li, Xiu-Li Zuo, Yan-Qing Li
Irritable bowel syndrome (IBS) is a common disorder in gastrointestinal system and impairs the quality of life of the patients. Clostridium butyricum (CB) is a probiotics that has been used in several gastrointestinal diseases. The efficacy of CB in treating IBS is still unknown. This prospective, multi-centre, randomized, double-blind, placebo-controlled trial aimed to assess the efficacy and safety of CB in treating diarrhea-predominant IBS (IBS-D) and analyze the fecal microbiota after treatment. Two hundred patients with IBS-D were recruited and were given CB or placebo for 4 weeks...
February 14, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29434698/effect-of-clostridium-butyricum-supplementation-on-the-development-of-intestinal-flora-and-the-immune-system-of-neonatal-mice
#3
Rui-Xue Miao, Xin-Xin Zhu, Chao-Min Wan, Zhi-Ling Wang, Yang Wen, Yi-Yuan Li
The objective of the present study was to examine whether Clostridium butyricum supplementation has a role in the regulation of the intestinal flora and the development of the immune system of neonatal mice. A total of 30 pregnant BALB/c mice, including their offspring, were randomly divided into three groups: In the maternal intervention group (Ba), maternal mice were treated with Clostridium butyricum from birth until weaning at postnatal day 21 (PD21) followed by administration of saline to the offspring at PD21-28; in the offspring intervention group (Ab), breast-feeding maternal mice were supplemented with saline and offspring were directly supplemented with Clostridium butyricum from PD21-28; in the both maternal and offspring intervention group (Bb), both maternal mice and offspring were supplemented with Clostridium butyricum at PD 0-21 and at PD21-28...
January 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29434295/vaccination-against-lawsonia-intracellularis-decreases-shedding-of-salmonella-enterica-serovar-typhimurium-in-co-infected-pigs-and-alters-the-gut-microbiome
#4
Fernando L L Leite, Randall S Singer, Tonya Ward, Connie J Gebhart, Richard E Isaacson
Salmonella enterica serovar Typhimurium continues to be a major cause of foodborne illness worldwide and pork can serve as a source of infection. Co-infection of S. enterica with Lawsonia intracellularis, a common intestinal pathogen of swine, has been found as risk factor for increased S. enterica shedding. The objective of this study was to investigate if vaccination against L. intracellularis could lead to decreased S. Typhimurium shedding. To test this hypothesis, pigs were challenged with either S. Typhimurium or S...
February 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29429265/-laboratory-based-characterization-and-traceability-of-an-outbreak-of-necrotising-enterocolitis
#5
Y Li, Y P Dong, D Zhang, F Q Li
Objective: Laboratory-based characterization and traceability were performed on an outbreak of necrotising enterocolitis (NEC) happened in a maternal and child health care hospital in China. Methods: Thirty-seven samples were collected from 3 NEC cases, that the clinical manifestations was bloody stools. Clostridium spp . isolation and identification were carried out on stool, breast milk, milk-based infant powder and environmental swab samples collected during NEC outbreak from October to November in 2016...
February 6, 2018: Zhonghua Yu Fang Yi Xue za Zhi [Chinese Journal of Preventive Medicine]
https://www.readbyqxmd.com/read/29373265/susceptibility-of-clostridium-species-isolated-in-japan-to-fidaxomicin-and-its-major-metabolite-op-1118
#6
Katsunori Yanagihara, Norihiko Akamatsu, Junichi Matsuda, Norihito Kaku, Kiyomitsu Katsumata, Kosuke Kosai
The narrow-spectrum macrocyclic antibiotic fidaxomicin is approved for treatment of Clostridium difficile infection in many countries and is currently under evaluation in Japan for this indication. This study was conducted to evaluate the effects of fidaxomicin and its major metabolite, OP-1118, on Clostridium spp. isolated in Nagasaki University Hospital, Japan. Isolates were cultured and antimicrobial susceptibility analyses performed according to the Clinical Laboratory Standards Institute methods. Ninety-eight isolates were obtained between 2012 and 2015, 50 of C...
January 17, 2018: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/29363955/synthesis-of-stachyobifiose-using-bifidobacterial-%C3%AE-galactosidase-purified-from-recombinant-escherichia-coli
#7
So Young Oh, So Youn Youn, Myeong Soo Park, Nam In Baek, Geun Eog Ji
The prebiotic effects of GOS (galactooligosaccharides) are known to depend on the glycosidic linkages, degree of polymerization (DP), and the monosaccharide composition. In this study, a novel form of α-GOS with a potentially improved prebiotic effect was synthesized using bifidobacterial α-galactosidase (α-Gal) purified from recombinant Escherichia coli. The carbohydrate produced was identified as α-d-galactopyranosyl-(1→6)-O-α-d-glucopyranosyl-(1→2)-[α-d-galactopyranosyl-(1→6)-O-β-d-fructofuranoside] and was termed stachyobifiose...
January 24, 2018: Journal of Agricultural and Food Chemistry
https://www.readbyqxmd.com/read/29352082/clostridial-strain-specific-characteristics-associated-with-necrotizing-enterocolitis
#8
Sophia Schönherr-Hellec, Geraldine L Klein, Johanne Delannoy, Laurent Ferraris, Jean Christophe Rozé, Marie José Butel, Julio Aires
We aimed at identifying potential clostridial factors linking these bacteria with necrotizing enterocolitis (NEC). We compared the phenotypic traits, stress responses, cellular cytotoxicity and inflammatory capabilities of the largest collection of Clostridium butyricum and Clostridium neonatale strains isolated from fecal samples of NEC and control preterm neonates (PN). When strains characteristics were used as explanatory variables, a statistical discriminant analysis allowed the separation of NEC and control strains into separate groups...
January 19, 2018: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29329362/clostridium-butyricum-regulates-visceral-hypersensitivity-of-irritable-bowel-syndrome-by-inhibiting-colonic-mucous-low-grade-inflammation-through-its-action-on-nlrp6
#9
Kejia Zhao, Leimin Yu, Xi Wang, Yibo He, Bin Lu
Visceral hypersensitivity induced by stress is quite common in irritable bowel syndrome (IBS) patients. Probiotics play an important role in reducing visceral hypersensitivity in IBS patients. However, the mechanism has not been clearly elucidated. In this study, we investigated the role of nod-like receptor pyrin domain-containing protein 6 (NLRP6) in Clostridium butyricum-regulated IBS induced by stress. Our results showed that NLRP6 was down-regulated in IBS group colon tissues. In addition, IL-18, IL-1β, myeloperoxidase (MPO), d-lactic acid (D-LA), and CD172a were up-regulated in the IBS group of colonic mucous...
January 10, 2018: Acta Biochimica et Biophysica Sinica
https://www.readbyqxmd.com/read/29221216/probiotics-in-14-day-triple-therapy-for-asian-pediatric-patients-with-helicobacter-pylori-infection-a-network-meta-analysis
#10
Juanjuan Wen, Pailan Peng, Pengfei Chen, Lirong Zeng, Qinghua Pan, Wenbin Wei, Jianhua He
Although 14-day triple therapy has been widely administrated for eradicating Helicobacter pylori (H. pylori) in Asia, its antibiotic-associated side effects restrict the effectivity of eradication therapy in pediatric patients. Therefore, a network meta-analysis (NMA) was conducted to compare the efficacy and safety of probiotics supplemented in 14-day triple therapy in Asian pediatric patients. Materials and Methods: Randomized controlled trials (RCTs) were retrieved comprehensively in electronic databases (such as PubMed, Cochrane library, Embase, CNKI, Wan fang database, VIP database and CBM) until April 2017...
November 10, 2017: Oncotarget
https://www.readbyqxmd.com/read/29193450/clostridium-butyricum-exerts-a-neuroprotective-effect-in-a-mouse-model-of-traumatic-brain-injury-via-the-gut-brain-axis
#11
H Li, J Sun, J Du, F Wang, R Fang, C Yu, J Xiong, W Chen, Z Lu, J Liu
BACKGROUND: Traumatic brain injury (TBI) is a common occurrence following gastrointestinal dysfunction. Recently, more and more attentions are being focused on gut microbiota in brain and behavior. Glucagon-like peptide-1 (GLP-1) is considered as a mediator that links the gut-brain axis. The aim of this study was to explore the neuroprotective effects of Clostridium butyricum (Cb) on brain damage in a mouse model of TBI. METHODS: Male C57BL/6 mice were subjected to a model of TBI-induced by weight-drop impact head injury and were treated intragastrically with Cb...
November 27, 2017: Neurogastroenterology and Motility: the Official Journal of the European Gastrointestinal Motility Society
https://www.readbyqxmd.com/read/29189926/long-term-h2-photoproduction-from-starch-by-co-culture-of-clostridium-butyricum-and-rhodobacter-sphaeroides-in-a-repeated-batch-process
#12
Tatyana Laurinavichene, Kestutis Laurinavichius, Evgeny Shastik, Anatoly Tsygankov
OBJECTIVES: To prove the possibility of efficient starch photofermentation in co-culture of heterotrophic and phototrophic bacteria over prolonged period. RESULTS: Repeated batch photofermentation of starch was demonstrated in co-culture Clostridium butyricum and Rhodobacter sphaeroides under microaerobic conditions. It continued 15 months without addition of new inoculum or pH regulation when using 4-5 g starch l-1 and 0.04 g yeast extract l-1. The complete degradation of starch without volatile fatty acids accumulation was shown in this co-culture...
November 30, 2017: Biotechnology Letters
https://www.readbyqxmd.com/read/29105732/metabolic-profiles-analysis-of-1-3-propanediol-production-process-by-clostridium-butyricum-through-repeated-batch-fermentation-coupled-with-activated-carbon-adsorption
#13
Ai-Hui Zhang, Hao-Lin Liu, Shi-Yang Huang, You-Si Fu, Bai-Shan Fang
1,3-propanediol production by Clostridium butyricum is a low productivity process due to the long time seed cultivation and thus hinders its industrial scale production. In the present study, repeated batch fermentation coupled with activated carbon adsorption strategy was first established which conduced not only to saving the time of seed cultivation and enhancing the productivity, but also to reducing the costs for the seed cultivation to achieve the purpose of 1,3-propanediol continuous production. The concentration of 1,3-propanediol from first to fourth cycle was 42...
November 4, 2017: Biotechnology and Bioengineering
https://www.readbyqxmd.com/read/29097999/clostridium-butyricum-cgmcc0313-1-protects-against-autoimmune-diabetes-by-modulating-intestinal-immune-homeostasis-and-inducing-pancreatic-regulatory-t-cells
#14
Lingling Jia, Kai Shan, Li-Long Pan, Ninghan Feng, Zhuwu Lv, Yajun Sun, Jiahong Li, Chengfei Wu, Hao Zhang, Wei Chen, Julien Diana, Jia Sun, Yong Q Chen
Recent evidence indicates that indigenous Clostridium species induce colonic regulatory T cells (Tregs), and gut lymphocytes are able to migrate to pancreatic islets in an inflammatory environment. Thus, we speculate that supplementation with the well-characterized probiotics Clostridium butyricum CGMCC0313.1 (CB0313.1) may induce pancreatic Tregs and consequently inhibit the diabetes incidence in non-obese diabetic (NOD) mice. CB0313.1 was administered daily to female NOD mice from 3 to 45 weeks of age. The control group received an equal volume of sterile water...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28994162/effect-of-probiotics-on-perinatal-outcome-in-patients-at-high-risk-of-preterm-birth
#15
Nami Kirihara, Masato Kamitomo, Tatsunori Tabira, Takashi Hashimoto, Hiroko Taniguchi, Takatsugu Maeda
AIM: Recent reports have shown lower levels of Clostridium and higher levels of Lactobacillales in the intestinal microbiota in preterm birth patients compared to term birth patients. However, the influence of probiotics on perinatal status has not been elucidated. The aim of our study was to evaluate the effects of probiotics on perinatal outcomes. METHODS: We retrospectively evaluated the effects of oral probiotics on perinatal outcome in patients at high risk of preterm birth...
October 10, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28935752/erratum-for-halpin-et-al-finished-whole-genome-sequences-of-clostridium-butyricum-toxin-subtype-e4-and-clostridium-baratii-toxin-subtype-f7-strains
#16
Jessica L Halpin, Karen Hill, Shannon L Johnson, David Carlton Bruce, T Brian Shirey, Janet K Dykes, Carolina Lúquez
No abstract text is available yet for this article.
September 21, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28933492/the-hepatoprotective-effect-of-the-probiotic-clostridium-butyricum-against-carbon-tetrachloride-induced-acute-liver-damage-in-mice
#17
Jiaming Liu, Yaoyang Fu, Hao Zhang, Jindan Wang, Jing Zhu, Yaqi Wang, Yuegui Guo, Guocan Wang, Tianqi Xu, Maoping Chu, Fangyan Wang
Previous studies have revealed that the probiotic Clostridium butyricum (C. butyricum) can attenuate cirrhosis in chronic non-alcoholic liver disease. However, the effects of C. butyricum on acute liver injury (ALI) remain unclear. Therefore, the present study aims to examine the hepatoprotective effects and the underlying mechanisms employed by C. butyricum in a carbon tetrachloride (CCl4)-induced ALI murine model. Here, we evaluated the survival rate and the levels of alanine aminotransferase (ALT), aspartate aminotransferase (AST), anti-oxidants, cytokines and the gut microbiota to elucidate the potential mechanisms by which C...
September 21, 2017: Food & Function
https://www.readbyqxmd.com/read/28859498/influence-of-human-milk-oligosaccharides-on-adherence-of-bifidobacteria-and-clostridia-to-cell-lines
#18
Sarka Musilova, Nikol Modrackova, Ivo Doskocil, Roman Svejstil, Vojtech Rada
Adhesion of gut bacteria to the intestinal epithelium is the first step in their colonization of the neonatal immature gut. Bacterial colonization of the infant gut is influenced by several factors, of which the most important are the mode of delivery and breast-feeding. Breast-fed infants ingest several grams of human milk oligosaccharides (HMOs) per day, which can become receptor decoys for intestinal bacteria. The most abundant intestinal bacteria in vaginally delivered infants are bifidobacteria, whereas infants born by cesarean section are colonized by clostridia...
September 1, 2017: Acta Microbiologica et Immunologica Hungarica
https://www.readbyqxmd.com/read/28843121/exploring-the-microbial-origins-of-p-cresol-and-its-co-occurrence-pattern-in-the-chinese-liquor-making-process
#19
Hai Du, Bo Liu, Xueshan Wang, Yan Xu
The compound p-cresol is the major off-odor and toxic component of strong aroma-type Chinese liquor. To trace its origin, the p-cresol contents in the liquor-making process were detected by gas chromatography-mass spectrometry. The prokaryotic communities involved in the process were revealed by 16S rRNA gene MiSeq sequencing. The results showed that the microbial diversity and concentration of p-cresol in pit mud significantly increased with increased pit depth. Canonical correspondence analysis further revealed that p-cresol was positively correlated with the genera Aminobacterium, Clostridium, Sedimentibacter and Syntrophomonas...
August 19, 2017: International Journal of Food Microbiology
https://www.readbyqxmd.com/read/28832229/effects-of-polysaccharide-from-physalis-alkekengi-var-francheti-on-liver-injury-and-intestinal-microflora-in-type-2-diabetic-mice
#20
Xin Zhao, Ziyang Chen, Yuling Yin, Xinli Li
CONTEXT: Diabetic liver injury is a serious diabetic complication. The alterations of intestinal microbiota play an important role in induction and promotion of liver injury progression. Physalis alkekengi L. var. francheti (Mast.) Makino (Solanaceae) has been used as a water decoction for treating diabetes. OBJECTIVE: To study the effects of a polysaccharide (PPSB) from Physalis alkekengi var. francheti on liver injury and intestinal microflora in type-2 diabetic mice...
December 2017: Pharmaceutical Biology
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