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https://www.readbyqxmd.com/read/29472900/spatial-heterogeneity-and-co-occurrence-of-mucosal-and-luminal-microbiome-across-swine-intestinal-tract
#1
Li Zhang, Weida Wu, Yuan-Kun Lee, Jingjing Xie, Hongfu Zhang
Pigs are one of the most important economic livestock. Gut microbiota is not only critical to the health but also the production efficiency of pigs. Manipulating gut microbiota relies on the full view of gut microbiome and the understanding of drive forces shaping microbial communities. 16s rDNA sequencing was used to profile microbiota along the longitudinal and radical axes to obtain the topographical map of microbiome in different intestinal compartments in young pigs. Alpha and beta-diversities revealed distinct differences in microbial compositions between the distal ileum and cecum and colon, as well as between the lumen and mucosa...
2018: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29462845/a-comparison-of-the-microbial-community-structure-between-inflamed-and-non-inflamed-sites-in-patients-with-ulcerative-colitis
#2
Atsushi Hirano, Junji Umeno, Yasuharu Okamoto, Hiroki Shibata, Yoshitoshi Ogura, Tomohiko Moriyama, Takehiro Torisu, Shin Fujioka, Yuta Fuyuno, Yutaka Kawarabayasi, Takayuki Matsumoto, Takanari Kitazono, Motohiro Esaki
BACKGROUND AND AIM: The gut microbiota is suggested to play an important role in the pathogenesis of ulcerative colitis (UC). However, inter-individual and spatial variations hamper the identification of UC-related changes. We thus investigated paired mucosa-associated microbiota obtained from both inflamed and non-inflamed sites of UC patients and corresponding sites of non-IBD controls. METHODS: Mucosal biopsies of both inflamed and non-inflamed sites were obtained from 14 patients with active UC of the left-sided or proctitis type...
February 20, 2018: Journal of Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/29459521/-the-immune-response-to-prevotella-bacteria-in-autoimmune-diseases
#3
Takuro Nii, Yuichi Maeda, Kiyoshi Takeda
No abstract text is available yet for this article.
2018: Arerugī, [Allergy]
https://www.readbyqxmd.com/read/29454699/interrelations-between-the-rumen-microbiota-and-production-behavioral-rumen-fermentation-metabolic-and-immunological-attributes-of-dairy-cows
#4
M Schären, J Frahm, S Kersten, U Meyer, J Hummel, G Breves, S Dänicke
Different studies have shown a strong correlation between the rumen microbiome and a range of production traits (e.g., feed efficiency, milk yield and components) in dairy cows. Underlying dynamics concerning cause and effect are, however, still widely unknown and warrant further investigation. The aim of the current study was to describe possible functional interrelations and pathways using a large set of variables describing the production, the metabolic and immunological state, as well as the rumen microbiome and fermentation characteristics of dairy cows in early lactation (n = 36, 56 ± 3 d in milk)...
February 14, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29447068/microbial-culturomics-broadens-human-vaginal-flora-diversity-genome-sequence-and-description-of-prevotella-lascolaii-sp-nov-isolated-from-a-patient-with-bacterial-vaginosis
#5
Khoudia Diop, Awa Diop, Anthony Levasseur, Oleg Mediannikov, Catherine Robert, Nicholas Armstrong, Carine Couderc, Florence Bretelle, Didier Raoult, Pierre-Edouard Fournier, Florence Fenollar
Microbial culturomics is a new subfield of postgenomic medicine and omics biotechnology application that has broadened our awareness on bacterial diversity of the human microbiome, including the human vaginal flora bacterial diversity. Using culturomics, a new obligate anaerobic Gram-stain-negative rod-shaped bacterium designated strain khD1 T was isolated in the vagina of a patient with bacterial vaginosis and characterized using taxonogenomics. The most abundant cellular fatty acids were C 15:0 anteiso (36%), C 16:0 (19%), and C 15:0 iso (10%)...
February 15, 2018: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/29445454/rumen-protected-methionine-during-the-peripartal-period-in-dairy-cows-and-its-effects-on-abundance-of-major-species-of-ruminal-bacteria
#6
Mohamed K Abdelmegeid, Ahmed A Elolimy, Zheng Zhou, Vincenzo Lopreiato, Joshua C McCann, Juan J Loor
Background: Extensive degradation of amino acids in the rumen via microbial deamination decreases the post-ruminal availability of dietary indispensable amino acids. Together with the normal decrease in voluntary dry matter intake (DMI) around parturition in dairy cows, microbial metabolism contributes to a markedly negative balance of indispensable amino acids, including methionine which may be the first-limiting for milk production. The main objective of the current study was to profile changes in major bacterial species with key functions in cellulose and hemicellulose digestion, xylan breakdown, proteolytic action, propionic acid production, lactate utilization and ruminal biohydrogenation in cows supplemented with rumen-protected Methionine (SM; Smartamine M, Adisseo NA, Alpharetta, GA, USA) from -23 through 30 d relative to parturition...
2018: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/29433221/colonic-fermentation-of-polyphenolics-from-sea-buckthorn-hippophae-rhamnoides-berries-assessment-of-effects-on-microbial-diversity-by-principal-component-analysis
#7
Sampan Attri, Kavita Sharma, Pinky Raigond, Gunjan Goel
The present study investigates the stability of polyphenolic in Sea buckthorn berries juice (SBJ) during different phases of digestion and its effect on colonic microbial diversity. At each stage, the Total polyphenolic content (TPC), Total antioxidant activity (TAA) and polyphenolic profile was determined. A 1.64 and 2.20 folds increase in TPC with 4.88 and 9.61 folds increase in TAA were observed during gastric and small intestine digestion (p<0.05) with the release of quercetin from food matrix. The digestion resulted in deformation of intact crystalline structure as indicated by scanning electron micrographs...
March 2018: Food Research International
https://www.readbyqxmd.com/read/29432368/fecal-microbiota-differences-according-to-the-risk-of-advanced-colorectal-neoplasms
#8
Hyo-Joon Yang, Min-Jung Kwon, Yoosoo Chang, Seul-Ki Song, Kwang-Sung Ahn, Han-Na Kim, Yeojun Yun, Hyung-Lae Kim, Dong Il Park
GOALS AND BACKGROUND: This study aimed to compare differences in the fecal microbiota according to the risk of advanced colorectal neoplasia (ACN) based on a risk-score model in a large Korean cohort. STUDY: Stool samples were collected from 1122 health screening recipients: 404 enrolled in the average risk (AR) group, 514 in the moderate risk (MR) group, and 204 in the high risk (HR) group, in accordance with their risk of ACN. The fecal microbiota was characterized using pyrosequencing of the V3-V4 region of the 16S rRNA genes...
February 9, 2018: Journal of Clinical Gastroenterology
https://www.readbyqxmd.com/read/29430094/effect-of-ultrasonic-activation-of-photosensitizer-dye-temoporfin-foscan-on-antimicrobial-photodynamic-therapy-an-ex-vivo-study
#9
Aleem Mohammad, Srinidhi V Ballullaya, Jayaprakash Thumu, Sohani Maroli, Pushpa Shankarappa
Aim: The aim of this study is to evaluate the effectiveness of ultrasonic activation of photosensitizer (PS) drug Foscan in the elimination of endodontic pathogen from root canal system. Materials and Methods: The minimal bactericidal concentration of "Foscan" was determined using disc diffusion and broth dilution method. Forty-eight extracted single-rooted premolars with periapical pathology were used for the study. After access opening, the first microbial sample was taken...
November 2017: Journal of Conservative Dentistry: JCD
https://www.readbyqxmd.com/read/29428759/graded-substitution-of-grains-with-bakery-by-products-modulates-ruminal-fermentation-nutrient-degradation-and-microbial-community-composition-in-vitro
#10
E Humer, S Aditya, A Kaltenegger, F Klevenhusen, R M Petri, Q Zebeli
A new segment of feed industry based on bakery by-products (BBP) has emerged. Yet, information is lacking regarding the effects of inclusion of BBP in ruminant diets on ruminal fermentation and microbiota. Therefore, the aim of this study was to evaluate the effect of the gradual replacement of grains by BBP on ruminal fermentation, nutrient degradation, and microbial community composition using the rumen-simulation technique. All diets consisted of hay and concentrate mixture with a ratio of 42:58 (dry matter basis), but differed in the concentrate composition with either 45% cereal grains or BBP, whereby 15, 30, or 45% of BBP were used in place of cereal grains...
February 7, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29423216/dietary-proline-supplementation-alters-colonic-luminal-microbiota-and-bacterial-metabolite-composition-between-days-45-and-70-of-pregnancy-in-huanjiang-mini-pigs
#11
Yujiao Ji, Qiuping Guo, Yulong Yin, Francois Blachier, Xiangfeng Kong
Background: Pregnancy is associated with important changes in gut microbiota composition. Dietary factors may affect the diversity, composition, and metabolic activity of the intestinal microbiota. Among amino acids, proline is known to play important roles in protein metabolism and structure, cell differentiation, conceptus growth and development, and gut microbiota re-equilibration in case of dysbiosis. Results: Dietary supplementation with 1% proline decreased (P < 0...
2018: Journal of Animal Science and Biotechnology
https://www.readbyqxmd.com/read/29420847/is-antimicrobial-photodynamic-therapy-effective-for-microbial-load-reduction-in-peri-implantitis-treatment-a-systematic-review-and-meta-analysis
#12
Renato Silva Fraga, Lívia Azeredo Alves Antunes, Karla Bianca Fontes, Erika Calvano Küchler, Natalia Lopes Pontes Póvoa Iorio, Leonardo Santos Antunes
The systematic review and meta-analysis were undertaken to evaluate the effectiveness of antimicrobial photodynamic therapy (aPDT) in the microbiological alteration beneficial to peri-implantitis treatment. This study is registered with PROSPERO, number CRD42017064215. Bibliographic databases including Cochrane Library, Web of Science, Scopus and PubMed were searched from inception to January 8, 2017. The search strategy was assembled from the following MeSH-Terms: "Photochemotherapy", "Dental Implants" and "Peri-Implantitis"...
February 8, 2018: Photochemistry and Photobiology
https://www.readbyqxmd.com/read/29420132/tumour-associated-and-non-tumour-associated-microbiota-addendum
#13
Burkhardt Flemer, Maeve Herlihy, Micheal O'Riordain, Fergus Shanahan, Paul W O'Toole
In a recent study1 we reported that tissue-associated microbial Co-abundance Groups (CAGs) were differentially associated with CRC. Two of the CAGs, which we named Pathogen CAG and Prevotella CAG, were correlated with a gene expression signature indicative of a TH17 response. A TH17 response has been associated with decreased survival in patients with CRC2, and members of the Pathogen CAG such as Fusobacterium nucleatum, Escherichia coli and Bacteroides fragilis have been repeatedly reported to be associated with CRC-development...
February 8, 2018: Gut Microbes
https://www.readbyqxmd.com/read/29411528/alterations-in-the-gut-microbiota-of-patients-with-acquired-immune-deficiency-syndrome
#14
Youlian Zhou, Zhitao Ou, Xiaoping Tang, Yongjian Zhou, Haoming Xu, Xianfei Wang, Kang Li, Jie He, Yanlei Du, Hong Wang, Ye Chen, Yuqiang Nie
Acquired immune deficiency syndrome (AIDS), caused by infection with human immunodeficiency virus (HIV), is associated with gastrointestinal disease, systemic immune activation and changes in the gut microbiota. Here, we aim to investigate the gut microbiota patterns of HIV-infected individuals and HIV-uninfected individuals in populations from South China. We enrolled 33 patients with HIV (14 participants treated with highly active antiretroviral therapy [HAART] for more than 3 months; the remaining 19 individuals had not received treatment) and 35 healthy controls (HC) for a cross-sectional comparison of gut microbiota using stool samples...
February 7, 2018: Journal of Cellular and Molecular Medicine
https://www.readbyqxmd.com/read/29410981/diet-and-microbiota-linked-in-health-and-disease
#15
REVIEW
T Requena, M C Martínez-Cuesta, C Peláez
Diet has shaped microbiota profiles through human evolution. Traditional gut microbiomes are described to be driven by high levels of Prevotella. In the present, however, it is consistently described a lower microbial richness in urban industrialized populations compared with individuals living in rural settings, Bacteroides being predominant among urban-industrial gut microbiomes. Components of diet are highly influential in shaping the gut microbiota, being fiber, fat, proteins, polyphenols and micronutrients differentially metabolized by generalist and specialized microorganisms alone or through the phenomenon of cross-feeding...
February 7, 2018: Food & Function
https://www.readbyqxmd.com/read/29410255/antimicrobial-efficacy-of-photodynamic-therapy-and-light-activated-disinfection-on-contaminated-zirconia-implants-an-in-vitro-study
#16
Bleron Azizi, Ana Budimir, Ivona Bago, Blerim Mehmeti, Suzana Jakovljević, Jeta Kelmendi, Aleksandra Presecki Stanko, Dragana Gabrić
BACKGROUND: We aimed to evaluate the antimicrobial efficacy of photodynamic therapy (PDT) and light-activated disinfection (LAD) on zirconia dental implants contaminated with three bacterial species and investigate if the PDT and LAD cause implant surface alterations. METHODS: Seventy-two zirconia dental implants were contaminated with a bacterial suspension of Prevotella intermedia, Actinomyces actinomycetemcomitans, and Porphyromonas gingivalis. The implants were subsequently randomly divided into four groups (n = 12 dental implants/each) according to the decontamination protocol: Group 1 (PDT1) - PDT (660 nm, 100 mW) with toluidine blue; Group 2 (PDT2) - PDT (660 nm, 100 mW) with phenothiazine chloride dye; Group 3 (LAD) - light emitting diode (LED) with toluidine blue; and Group 4 (TB) - toluidine blue without the application of light...
February 1, 2018: Photodiagnosis and Photodynamic Therapy
https://www.readbyqxmd.com/read/29406520/pre-treatment-microbial-prevotella-to-bacteroides-ratio-determines-body-fat-loss-success-during-a-6-month-randomized-controlled-diet-intervention
#17
M F Hjorth, H M Roager, T M Larsen, S K Poulsen, T R Licht, M I Bahl, Y Zohar, A Astrup
This corrects the article DOI: 10.1038/ijo.2017.220.
February 2018: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/29402871/oral-health-and-brain-injury-causal-or-casual-relation
#18
Rajath Sasidharan Pillai, Kiran Iyer, Rubens Spin-Neto, Simple Futarmal Kothari, Jørgen Feldbæk Nielsen, Mohit Kothari
BACKGROUND: To systematically review the current literature investigating the association between oral health and acquired brain injury. METHODS: A structured search strategy was applied to PubMed, Embase, Web of Science, and CENTRAL electronic databases until March 2017 by 2 independent reviewers. The preferred reporting items for systematic review and meta-analysis guidelines were used for systematic review. RESULTS: Even though the objective was to assess the association between oral health and acquired brain injury, eligible studies focused solely on different forms of stroke and stroke subtypes...
January 9, 2018: Cerebrovascular Diseases Extra
https://www.readbyqxmd.com/read/29401401/presence-of-archaea-and-selected-bacteria-in-infected-root-canal-system
#19
Ewa Brzezińska-Błaszczyk, Elżbieta Pawłowska, Tomasz Płoszaj, Henryk Włodzimierz Witas, Urszula Godzik, Justyna Agier
The infections of root canal have polymicrobial etiology. The main group of microflora in the infected pulp is bacteria. There is limited data that archaea may be present in infected pulp tissue. This study's aim was to check the prevalence of archaea in necrotic root canal samples obtained from patients with primary or post-treatment infection. Prevalence of selected bacteria species (Prevotella intermedia, Porphyromonas gingivalis, Tannerella forsythia, Treponema denticola, Synergistes sp.) in necrotic samples, was evaluated as well...
February 5, 2018: Canadian Journal of Microbiology
https://www.readbyqxmd.com/read/29399316/adjunct-use-of-low-level-laser-therapy-on-the-treatment-of-necrotizing-ulcerative-gingivitis-a-case-report
#20
Seda Sevinç Özberk, Hasan Gündoğar, Süleyman Ziya Şenyurt, Kamile Erciyas
Necrotizing ulcerative gingivitis (NUG) is a microbial disease of the gingiva in the context of an impaired host response. This form of gingivitis is relatively rare. NUG is an infection characterized by gingival necrosis presenting as "punched-out" papillae, spontaneous bleeding, pain, oral malodor, and pseudomembrane formation. The primary predisposing factors are bacterial plaque and an inadequate diet, but smoking and psychological stress may also affect the disease severity. NUG is associated with a characteristic bacterial flora, which includes fusiform bacteria, spirochetes, and Prevotella intermedia...
2018: Journal of Lasers in Medical Sciences
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