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Bifidobacterium

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https://www.readbyqxmd.com/read/29222102/tracking-the-taxonomy-of-the-genus-bifidobacterium-based-on-a-phylogenomic-approach
#1
Gabriele Andrea Lugli, Christian Milani, Sabrina Duranti, Leonardo Mancabelli, Marta Mangifesta, Francesca Turroni, Alice Viappiani, Douwe van Sinderen, Marco Ventura
For decades, bacterial taxonomy has been based on in vitro molecular biology techniques and comparison of molecular marker sequences to measure the degree of genetic similarity and deduce phylogenetic relatedness of novel bacterial species with reference microbial taxa. Due to the advent of the genomic era, access to complete bacterial genome contents has become easier, thereby presenting the opportunity to precisely investigate the overall genetic diversity of microorganisms. Here, we describe a high-accuracy phylogenomic approach to assess the taxonomy of members of the genus Bifidobacterium and identify apparent misclassifications in current bifidobacterial taxonomy...
December 8, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/29221216/probiotics-in-14-day-triple-therapy-for-asian-pediatric-patients-with-helicobacter-pylori-infection-a-network-meta-analysis
#2
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/29216491/microbial-source-tracking-markers-associated-with-domestic-rainwater-harvesting-systems-correlation-to-indicator-organisms
#3
M Waso, S Khan, W Khan
Domestic rainwater harvesting (tank water) systems were screened for the presence of a panel of microbial source tracking (MST) markers and traditional indicator organisms. The indicator organisms were enumerated utilizing traditional culture-based methods, while the MST markers were quantified by quantitative PCR (qPCR). The indicators Escherichia coli (E. coli) and enterococci were also quantified using qPCR. Correlations and concurrence between these parameters were then investigated to determine which markers could be utilized to supplement traditional indicator analysis...
December 4, 2017: Environmental Research
https://www.readbyqxmd.com/read/29216305/inhibition-effect-of-bifidobacterium-longum-lactobacillus-acidophilus-streptococcus-thermophilus-and-enterococcus-faecalis-and-their-related-products-on-human-colonic-smooth-muscle-in-vitro
#4
Jing Gong, Tao Bai, Lei Zhang, Wei Qian, Jun Song, Xiaohua Hou
OBJECTIVE: To investigate the effects of four strains, generally used in clinic, including Bifidobacterium longum, Lactobacillus acidophilus, Streptococcus thermophilus and Enterococcus faecalis, and their related products on human colonic smooth muscle in vitro. METHODS: Human colonic circular muscle strips obtained from disease-free margins of resected segments from 25 patients with colorectal cancer were isometrically examined in a constant-temperature organ bath and exposed to different concentrations of living bacteria, sonicated cell fractions and cell-free supernatant (CFS)...
2017: PloS One
https://www.readbyqxmd.com/read/29214754/utility-of-conventional-culture-and-maldi-tof-ms-for-identification-of-microbial-communities-in-bronchoalveolar-lavage-fluid-in-comparison-with-the-gs-junior-next-generation-sequencing-system
#5
Ji Yeon Sung, Younjee Hwang, Mi Hwa Shin, Moo Suk Park, Sang Hoon Lee, Dongeun Yong, Kyungwon Lee
BACKGROUND: Diverse microbiota exist in the lower respiratory tract. Although next generation sequencing (NGS) is the most widely used microbiome analysis technique, it is difficult to implement NGS in clinical microbiology laboratories. Therefore, we evaluated the performance of conventional culture methods together with matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) in identifying microbiota in bronchoalveolar lavage (BAL) fluid. METHODS: BAL fluid samples (n=27) were obtained from patients undergoing diagnostic bronchoscopy for lung mass evaluation...
March 2018: Annals of Laboratory Medicine
https://www.readbyqxmd.com/read/29214176/human-gut-microbiota-associated-with-obesity-in-chinese-children-and-adolescents
#6
Ya-Ping Hou, Qing-Qing He, Hai-Mei Ouyang, Hai-Shan Peng, Qun Wang, Jie Li, Xiao-Fei Lv, Yi-Nan Zheng, Shao-Chuan Li, Hai-Liang Liu, Ai-Hua Yin
Objective: To investigate the gut microbiota differences of obese children compared with the control healthy cohort to result in further understanding of the mechanism of obesity development. Methods: We evaluated the 16S rRNA gene, the enterotypes, and quantity of the gut microbiota among obese children and the control cohort and learned the differences of the gut microbiota during the process of weight reduction in obese children. Results: In the present study, we learned that the gut microbiota composition was significantly different between obese children and the healthy cohort...
2017: BioMed Research International
https://www.readbyqxmd.com/read/29212851/omics-of-bifidobacteria-research-and-insights-into-their-health-promoting-activities
#7
REVIEW
Francesca Bottacini, Douwe van Sinderen, Marco Ventura
Members of the genus Bifidobacterium include gut commensals that are particularly abundant among the microbial communities residing in the gut of healthy breast-fed infants, where their presence has been linked to many beneficial host effects. Next-generation DNA sequencing and comparative and functional genome methodologies have been shown to be particularly useful in exploring the diversity of this genus. These combined approaches have allowed the identification of genetic features related to bifidobacterial establishment in the gut, involving host-microbe as well as microbe-microbe interactions...
December 6, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/29209439/comparative-study-of-probiotic-effects-of-lactobacillus-and-bifidobacteria-strains-on-cholesterol-levels-liver-morphology-and-the-gut-microbiota-in-obese-mice
#8
Rostyslav V Bubnov, Lidiia P Babenko, Liudmyla M Lazarenko, Viktoria V Mokrozub, Oleksandr A Demchenko, Oleksiy V Nechypurenko, Mykola Ya Spivak
Background: Microbiome-modulating interventions are promising for treatment and prevention of metabolic syndrome. The number of probiotic strains demonstrated ability to decrease cholesterol level in vivo, however, it was poorly confirmed in a clinical setting. The aim was to study the effects of L. acidophilus IMV B-7279, L. casei IMV B-7280, B. animalіs VKL and B. animalіs VKB separately and in various compositions on the level of serum cholesterol, gut microbiota contents and liver morphology on a high-calorie-induced obesity model in BALB/c mice...
December 2017: EPMA Journal
https://www.readbyqxmd.com/read/29201766/are-synbiotics-added-to-the-standard-therapy-to-eradicate-helicobacter-pylori-in-children-beneficial-a-randomized-controlled-study
#9
Banu N Şirvan, Merve K Usta, Nurav U Kizilkan, Nafive Urganci
Aim: We aimed to evaluate the role of the addition of Bifidobacterium /actis-containing synbiotic to the triple therapy in the case of He/icobacter py/ori eradication, the dyspeptic symptoms, and reducing the side effects of antibiotics. Materials and methods: A total of 104 children aged between 5 and 17 years, who were histopathologically diagnosed with H. py/ori were enrolled in this study, of whom 100 were included in the analysis. Patients were randomly classified into two groups...
January 2017: Euroasian Journal of Hepato-Gastroenterology
https://www.readbyqxmd.com/read/29201017/characterization-of-metagenomes-in-urban-aquatic-compartments-reveals-high-prevalence-of-clinically-relevant-antibiotic-resistance-genes-in-wastewaters
#10
Charmaine Ng, Martin Tay, Boonfei Tan, Thai-Hoang Le, Laurence Haller, Hongjie Chen, Tse H Koh, Timothy M S Barkham, Karina Y-H Gin
The dissemination of antimicrobial resistance (AMR) is an escalating problem and a threat to public health. Comparative metagenomics was used to investigate the occurrence of antibiotic resistant genes (ARGs) in wastewater and urban surface water environments in Singapore. Hospital and municipal wastewater (n = 6) were found to have higher diversity and average abundance of ARGs (303 ARG subtypes, 197,816 x/Gb) compared to treated wastewater effluent (n = 2, 58 ARG subtypes, 2,692 x/Gb) and surface water (n = 5, 35 subtypes, 7,985 x/Gb)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29197739/a-meta-analysis-of-the-use-of-probiotics-to-alleviate-depressive-symptoms
#11
REVIEW
Qin Xiang Ng, Christina Peters, Collin Yih Xian Ho, Donovan Yutong Lim, Wee-Song Yeo
INTRODUCTION: Some preclinical and clinical studies have demonstrated the positive impact of probiotic supplementation on depressive symptoms. This paper aims to provide an updated meta-analysis on the topic. METHODS: Using the keywords [probiotics OR gut OR microflora OR microbiome OR bacteria OR yeast OR yoghurt OR lactobacillus OR bifidobacterium] AND [mood OR depression OR MDD OR suicide], a preliminary search on the PubMed, Ovid, Clinical Trials Register of the Cochrane Collaboration Depression, Anxiety and Neurosis Group (CCDANTR) and Cochrane Field for Complementary Medicine database yielded 917 papers published in English between 1-Jan-1960 and 1-June-2017...
November 16, 2017: Journal of Affective Disorders
https://www.readbyqxmd.com/read/29184093/intrapartum-antibiotics-for-gbs-prophylaxis-alter-colonization-patterns-in-the-early-infant-gut-microbiome-of-low-risk-infants
#12
Jennifer C Stearns, Julia Simioni, Elizabeth Gunn, Helen McDonald, Alison C Holloway, Lehana Thabane, Andrea Mousseau, Jonathan D Schertzer, Elyanne M Ratcliffe, Laura Rossi, Michael G Surette, Katherine M Morrison, Eileen K Hutton
Early life microbial colonization and succession is critically important to healthy development with impacts on metabolic and immunologic processes throughout life. A longitudinal prospective cohort was recruited from midwifery practices to include infants born at full term gestation to women with uncomplicated pregnancies. Here we compare bacterial community succession in infants born vaginally, with no exposure to antibiotics (n = 53), with infants who were exposed to intrapartum antibiotic prophylaxis (IAP) for Group B Streptococcus (GBS; n = 14), and infants born by C-section (n = 7)...
November 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29177455/investigating-commercial-in-ovo-technology-as-a-strategy-for-introducing-probiotic-bacteria-to-broiler-embryos
#13
M D Triplett, W Zhai, E D Peebles, C D McDaniel, A S Kiess
Probiotics can improve broiler performance and reduce pathogens. Because the hatchery can be a source of contamination, delivering probiotics to the embryo before hatch is desirable. To date, probiotics have primarily been injected into eggs manually. Therefore, the objective of this study was to deliver various probiotic bacteria into broiler hatching eggs using an automated commercial in ovo injection system to evaluate hatchability of fertile eggs (HF). Three separate experiments were conducted using Lactobacillus acidophilus, Bacillus subtilis, or Bifidobacterium animalis...
November 21, 2017: Poultry Science
https://www.readbyqxmd.com/read/29176981/bifidobacterium-infantis-potentially-alleviates-shrimp-tropomyosin-induced-allergy-by-tolerogenic-dendritic-cell-dependent-induction-of-regulatory-t-cells-and-alterations-in-gut-microbiota
#14
Linglin Fu, Jinyu Song, Chong Wang, Shujie Fu, Yanbo Wang
Shellfish is one of the major allergen sources worldwide, and tropomyosin (Tm) is the predominant allergic protein in shellfish. Probiotics has been appreciated for its beneficial effects on the host, including anti-allergic and anti-inflammatory effects, although the underlying mechanisms were not fully understood. In this study, oral administration of probiotic strain Bifidobacterium infantis 14.518 (Binf) effectively suppressed Tm-induced allergic response in a mouse model by both preventive and therapeutic strategies...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29176714/analyses-of-gut-microbiota-and-plasma-bile-acids-enable-stratification-of-patients-for-antidiabetic-treatment
#15
Yanyun Gu, Xiaokai Wang, Junhua Li, Yifei Zhang, Huanzi Zhong, Ruixin Liu, Dongya Zhang, Qiang Feng, Xiaoyan Xie, Jie Hong, Huahui Ren, Wei Liu, Jing Ma, Qing Su, Hongmei Zhang, Jialin Yang, Xiaoling Wang, Xinjie Zhao, Weiqiong Gu, Yufang Bi, Yongde Peng, Xiaoqiang Xu, Huihua Xia, Fang Li, Xun Xu, Huanming Yang, Guowang Xu, Lise Madsen, Karsten Kristiansen, Guang Ning, Weiqing Wang
Antidiabetic medication may modulate the gut microbiota and thereby alter plasma and faecal bile acid (BA) composition, which may improve metabolic health. Here we show that treatment with Acarbose, but not Glipizide, increases the ratio between primary BAs and secondary BAs and plasma levels of unconjugated BAs in treatment-naive type 2 diabetes (T2D) patients, which may beneficially affect metabolism. Acarbose increases the relative abundances of Lactobacillus and Bifidobacterium in the gut microbiota and depletes Bacteroides, thereby changing the relative abundance of microbial genes involved in BA metabolism...
November 27, 2017: Nature Communications
https://www.readbyqxmd.com/read/29176008/viability-and-growth-promotion-of-starter-and-probiotic-bacteria-in-yogurt-supplemented-with-whey-protein-hydrolysate-during-refrigerated-storage
#16
Anna Dąbrowska, Konrad Babij, Marek Szołtysik, Józefa Chrzanowska
The effect of whey protein hydrolysate (WPH) addition on growth of standard yoghurt cultures and Bifidobacterium adolescentis during co-fermentation and its viability during storage at 4ºC in yoghurts has been evaluated. WPH was obtained with the use of serine protease from Y. lipolytica yeast. Stirred probiotic yoghurts were prepared by using whole milk standardized to 16% of dry matter with the addition of either whey protein concentrate, skim milk powder (SMP), WPH-SMP (ratio 1:1), WPH. The hydrolysate increased the yoghurt culture counts at the initial stage of fermentation and significantly inhibited the decrease in population viability throughout the storage at 4ºC in comparison to the control...
November 22, 2017: Postȩpy Higieny i Medycyny Doświadczalnej
https://www.readbyqxmd.com/read/29171288/structure-moderation-of-gut-microbiota-in-liraglutide-treated-diabetic-male-rats
#17
Qian Zhang, Xinhua Xiao, Jia Zheng, Ming Li, Miao Yu, Fan Ping, Tong Wang, Xiaojing Wang
The change of gut microbiome is associated with a serious of metabolic disorders, such as diabetes. As a glucagon-like peptide 1 analogue, liraglutide is a potent antidiabetic drug in clinical practice. However, the effect of liraglutide on the community of gut microbiota is still unknown. We aimed to determine the influence of liraglutide on fecal microbiota in diabetic male rats. Five-week-old male Sprague-Dawley rats were fed with a control diet or a high-fat diet for four weeks. By injecting streptozotocin, the diabetic rat model was performed...
January 1, 2017: Experimental Biology and Medicine
https://www.readbyqxmd.com/read/29168358/the-effect-of-early-administration-of-combined-multi-strain-and-multi-species-probiotics-on-gastrointestinal-morbidities-and-mortality-in-preterm-infants-a-randomized-controlled-trial-in-a-tertiary-care-unit
#18
İpek Güney-Varal, Nilgün Köksal, Hilal Özkan, Onur Bağcı, Pelin Doğan
Güney-Varal İ, Köksal N, Özkan H, Bağcı O, Doğan P. The effect of early administration of combined multi-strain and multi-species probiotics on gastrointestinal morbidities and mortality in preterm infants: A randomized controlled trial in a tertiary care unit. Turk J Pediatr 2017; 59: 13-19. Necrotizing enterocolitis (NEC) is a gastrointestinal emergency of the neonatal period. The aim of this study was to demonstrate the use of multistrain and multispecies probiotic on gastrointestinal morbidities and mortality...
2017: Turkish Journal of Pediatrics
https://www.readbyqxmd.com/read/29168036/the-gut-microbiome-symptoms-and-targeted-interventions-in-children-with-cancer-a-systematic-review
#19
REVIEW
Jinbing Bai, Madhusmita Behera, Deborah Watkins Bruner
PURPOSE: The gut microbiome plays a critical role in maintaining children's health and in preventing and treating children's disease. Current application of the gut microbiome in childhood cancer is still lacking. This study aimed to systematically review the following: (1) alternations in the gut microbiome throughout cancer treatment trajectories in children, (2) the associations between the gut microbiome and gastrointestinal (GI) symptoms and psychoneurological symptoms (PNS), and (3) the efficacy of therapeutic interventions in the gut microbiome in children with cancer...
November 22, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29165477/barley-beta-glucans-varying-in-molecular-mass-and-oligomer-structure-affect-cecal-fermentation-and-microbial-composition-but-not-blood-lipid-profiles-in-hypercholesterolemic-rats
#20
Mette S Mikkelsen, Morten G Jensen, Tina S Nielsen
There is an unmet need for appealing and functional barley β-glucan (BG) food matrices that can provide sufficient and active BG doses to consumers. We investigated how molecular mass and oligomer structure important for BG food and health properties affected plasma lipids and gut parameters in hypercholesterolemic rats. Following 3 weeks on a high-cholestrol diet, rats were given a high-cholesterol diet supplemented with either cellulose (control) or purified barley BGs with low (100 or 150 kDa; glucagel or lowBG, respectively) or medium (530 kDa; mediumBG) molecular masses varying in cellotriosyl/cellotetraosyl oligomer ratio for 4 weeks...
November 22, 2017: Food & Function
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