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https://www.readbyqxmd.com/read/28650741/microbial-culturomics-application-for-global-health-noncontiguous-finished-genome-sequence-and-description-of-pseudomonas-massiliensis-strain-cb-1-t-sp-nov-in-brazil
#1
Lucie Bardet, Teresa Cimmino, Clémence Buffet, Caroline Michelle, Jaishriram Rathored, Fatalmoudou Tandina, Jean-Christophe Lagier, Saber Khelaifia, Jônatas Abrahão, Didier Raoult, Jean-Marc Rolain
Culturomics is a new postgenomics field that explores the microbial diversity of the human gut coupled with taxono-genomic strategy. Culturomics, and the microbiome science more generally, are anticipated to transform global health diagnostics and inform the ways in which gut microbial diversity contributes to human health and disease, and by extension, to personalized medicine. Using culturomics, we report in this study the description of strain CB1(T) ( = CSUR P1334 = DSM 29075), a new species isolated from a stool specimen from a 37-year-old Brazilian woman...
June 26, 2017: Omics: a Journal of Integrative Biology
https://www.readbyqxmd.com/read/28650341/two-rheumatoid-arthritis-specific-autoantigens-correlate-microbial-immunity-with-autoimmune-responses-in-joints
#2
Annalisa Pianta, Sheila L Arvikar, Klemen Strle, Elise E Drouin, Qi Wang, Catherine E Costello, Allen C Steere
In rheumatoid arthritis (RA), immunological triggers at mucosal sites, such as the gut microbiota, may promote autoimmunity that affects joints. Here, we used discovery-based proteomics to detect HLA-DR-presented peptides in synovia or peripheral blood mononuclear cells and identified 2 autoantigens, N-acetylglucosamine-6-sulfatase (GNS) and filamin A (FLNA), as targets of T and B cell responses in 52% and 56% of RA patients, respectively. Both GNS and FLNA were highly expressed in synovia. GNS appeared to be citrullinated, and GNS antibody values correlated with anti-citrullinated protein antibody (ACPA) levels...
June 26, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28650151/orthogonal-comparison-of-gc-ms-and-1-h-nmr-spectroscopy-for-short-chain-fatty-acid-quantitation
#3
Jingwei Cai, Jingtao Zhang, Yuan Tian, Limin Zhang, Emmanuel Hatzakis, Kristopher W Krausz, Philip B Smith, Frank J Gonzalez, Andrew D Patterson
Short chain fatty acids (SCFAs) are important regulators of host physiology and metabolism and may contribute to obesity and associated metabolic diseases. Interest in SCFAs has increased in part due to the recognized importance of how production of SCFAs by the microbiota may signal to the host. Therefore, reliable, reproducible, and affordable methods for SCFA profiling are required for accurate identification and quantitation. In the current study, four different methods for SCFA (acetic acid, propionic acid, and butyric acid) extraction and quantitation were compared using two independent platforms including gas chromatography coupled with mass spectrometry (GC-MS) and (1)H nuclear magnetic resonance (NMR) spectroscopy...
June 26, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28649603/the-gut-brain-axis-is-intestinal-inflammation-a-silent-driver-of-parkinson-s-disease-pathogenesis
#4
Madelyn C Houser, Malú G Tansey
The state of the intestinal environment can have profound effects on the activity of the central nervous system through the physiological contributions of the microbiota, regulation of intestinal barrier function, and altered activity of peripheral neurons. The common language employed for much of the gut-brain communication is the modulation of immune activity. Chronic proinflammatory immune activity is increasingly being recognized as a fundamental element of neurodegenerative disorders, and in Parkinson's disease, inflammation in the intestine appears particularly relevant in pathogenesis...
2017: NPJ Parkinson's Disease
https://www.readbyqxmd.com/read/28649593/colonic-microbiota-encroachment-correlates-with-dysglycemia-in-humans
#5
Benoit Chassaing, Shreya M Raja, James D Lewis, Shanthi Srinivasan, Andrew T Gewirtz
BACKGROUND AND AIMS: Mucoid structures that coat the epithelium play an essential role in keeping the intestinal microbiota at a safe distance from host cells. Encroachment of bacteria into the normally almost-sterile inner mucus layer has been observed in inflammatory bowel disease and in mouse models of colitis. Moreover, such microbiota encroachment has also been observed in mouse models of metabolic syndrome, which are associated low-grade intestinal inflammation. Hence, we investigated if microbiota encroachment might correlate with indices of metabolic syndrome in humans...
September 2017: Cellular and Molecular Gastroenterology and Hepatology
https://www.readbyqxmd.com/read/28649469/distinct-patterns-in-the-gut-microbiota-after-surgical-or-medical-therapy-in-obese-patients
#6
Daniel A Medina, Juan P Pedreros, Dannae Turiel, Nicolas Quezada, Fernando Pimentel, Alex Escalona, Daniel Garrido
Bariatric surgery is highly successful in improving health compared to conventional dietary treatments. It has been suggested that the gut microbiota is a relevant factor in weight loss after bariatric surgery. Considering that bariatric procedures cause different rearrangements of the digestive tract, they probably have different effects on the gut microbiota. In this study, we compared the impact of medical treatment, sleeve gastrectomy and Roux-en-Y gastric bypass on the gut microbiota from obese subjects...
2017: PeerJ
https://www.readbyqxmd.com/read/28649413/identification-of-donor-microbe-species-that-colonize-and-persist-long-term-in-the-recipient-after-fecal-transplant-for-recurrent-clostridium-difficile
#7
Ranjit Kumar, Nengjun Yi, Degui Zhi, Peter Eipers, Kelly T Goldsmith, Paula Dixon, David K Crossman, Michael R Crowley, Elliot J Lefkowitz, J Martin Rodriguez, Casey D Morrow
Fecal microbiota transplantation has been shown to be an effective treatment for patients with recurrent C. difficile colitis. Although fecal microbiota transplantation helps to re-establish a normal gut function in patients, the extent of the repopulation of the recipient microbial community varies. To further understand this variation, it is important to determine the fate of donor microbes in the patients following fecal microbiota transplantation. We have developed a new method that utilizes the unique single nucleotide variants of gut microbes to accurately identify microbes in paired fecal samples from the same individual taken at different times...
2017: NPJ Biofilms and Microbiomes
https://www.readbyqxmd.com/read/28649403/inter-personal-diversity-and-temporal-dynamics-of-dental-tongue-and-salivary-microbiota-in-the-healthy-oral-cavity
#8
Michael W Hall, Natasha Singh, Kester F Ng, David K Lam, Michael B Goldberg, Howard C Tenenbaum, Josh D Neufeld, Robert G Beiko, Dilani B Senadheera
Oral microbes form a complex and dynamic biofilm community, which is subjected to daily host and environmental challenges. Dysbiosis of the oral biofilm is correlated with local and distal infections and postulating a baseline for the healthy core oral microbiota provides an opportunity to examine such shifts during the onset and recurrence of disease. Here we quantified the daily, weekly, and monthly variability of the oral microbiome by sequencing the largest oral microbiota time-series to date, covering multiple oral sites in ten healthy individuals...
2017: NPJ Biofilms and Microbiomes
https://www.readbyqxmd.com/read/28649371/recent-advances-in-microbial-fermentation-for-dairy-and-health
#9
REVIEW
Daragh Hill, Ivan Sugrue, Elke Arendt, Colin Hill, Catherine Stanton, R Paul Ross
Microbial fermentation has been used historically for the preservation of foods, the health benefits of which have since come to light. Early dairy fermentations depended on the spontaneous activity of the indigenous microbiota of the milk. Modern fermentations rely on defined starter cultures with desirable characteristics to ensure consistency and commercial viability. The selection of defined starters depends on specific phenotypes that benefit the product by guaranteeing shelf life and ensuring safety, texture, and flavour...
2017: F1000Research
https://www.readbyqxmd.com/read/28649305/emerging-microbiota-during-cold-storage-and-temperature-abuse-of-ready-to-eat-salad%C3%A2
#10
Karin Söderqvist, Omneya Ahmed Osman, Cecilia Wolff, Stefan Bertilsson, Ivar Vågsholm, Sofia Boqvist
Introduction: Ready-to-eat (RTE) leafy vegetables have a natural leaf microbiota that changes during different processing and handling steps from farm to fork. The objectives of this study were (i) to compare the microbiota of RTE baby spinach and mixed-ingredient salad before and after seven days of storage at 8°C or 15°C; (ii) to explore associations between bacterial communities and the foodborne pathogens Listeria monocytogenes, pathogenic Yersinia enterocolitica, and pathogen model organism Escherichia coli O157:H7 gfp+ when experimentally inoculated into the salads before storage; and (iii) to investigate if bacterial pathogens may be detected in the 16S rRNA amplicon dataset...
2017: Infection Ecology & Epidemiology
https://www.readbyqxmd.com/read/28649251/cocoa-and-dark-chocolate-polyphenols-from-biology-to-clinical-applications
#11
REVIEW
Thea Magrone, Matteo Antonio Russo, Emilio Jirillo
It is well known that cocoa and dark chocolate possess polyphenols as major constituents whose dietary consumption has been associated to beneficial effects. In fact, cocoa and dark chocolate polyphenols exert antioxidant and anti-inflammatory activities switching on some important signaling pathways such as toll-like receptor 4/nuclear factor κB/signal transducer and activator of transcription. In particular, cocoa polyphenols induce release of nitric oxide (NO) through activation of endothelial NO synthase which, in turn, accounts for vasodilation and cardioprotective effects...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28648868/immune-modulating-effects-in-mouse-dendritic-cells-of-lactobacilli-and-bifidobacteria-isolated-from-individuals-following-omnivorous-vegetarian-and-vegan-diets
#12
Diomira Luongo, Lucia Treppiccione, Alida Sorrentino, Ilario Ferrocino, Silvia Turroni, Monica Gatti, Raffaella Di Cagno, Yolanda Sanz, Mauro Rossi
Lactobacilli and bifidobacteria play a primary role in modulation of gut immunity. By considering that microbiota composition depends on various factors, including diet, we asked whether functional differences could characterize faecal populations of lactobacilli and bifidobacteria isolated from individuals with different dietary habits. 155 healthy volunteers who followed omnivorous, ovo-lacto-vegetarian or vegan diets were recruited at four Italian centres (Turin, Parma, Bologna and Bari). Faecal samples were collected; lactobacilli and bifidobacteria were isolated on selective media and their immunomodulatory activity was tested in mouse dendritic cells (DCs)...
June 22, 2017: Cytokine
https://www.readbyqxmd.com/read/28648853/next-generation-sequencing-of-oral-microbiota-in-type-2-diabetes-mellitus-prior-to-and-after-neem-stick-usage-and-correlation-with-serum-monocyte-chemoattractant-1
#13
Rubini Anbalagan, Padma Srikanth, Monika Mani, Ramya Barani, Krishna G Seshadri, R Janarthanan
INTRODUCTION: Oral microbiome impacts health and disease. T2DM and periodontitis are associated. Neem (Azadiracta indica) has antibacterial activity against oral microbiota. OBJECTIVES: To characterize oral microbiota (OMB) in saliva samples of T2DM patients by Next generation sequencing. To analyze MCP-1 levels among the T2DM patients before and after a month of neem stick usage as a toothbrush. MATERIALS AND METHODS: Blood and saliva samples were collected from adult T2DM patients before and after the neem stick usage...
June 13, 2017: Diabetes Research and Clinical Practice
https://www.readbyqxmd.com/read/28648367/re-incontinence-medication-response-relates-to-the-female-urinary-microbiota
#14
Toby C Chai
No abstract text is available yet for this article.
June 22, 2017: European Urology
https://www.readbyqxmd.com/read/28647857/ros-modulated-therapeutic-approaches-in-cancer-treatment
#15
REVIEW
Muhammad Hassan Raza, Sami Siraj, Abida Arshad, Usman Waheed, Fahad Aldakheel, Shatha Alduraywish, Muhammad Arshad
PURPOSE: Reactive oxygen species (ROS) are produced in cancer cells as a result of increased metabolic rate, dysfunction of mitochondria, elevated cell signaling, expression of oncogenes and increased peroxisome activities. Certain level of ROS is required by cancer cells, above or below which lead to cytotoxicity in cancer cells. This biochemical aspect can be exploited to develop novel therapeutic agents to preferentially and selectively target cancer cells. METHODS: We searched various electronic databases including PubMed, Web of Science, and Google Scholar for peer-reviewed english-language articles...
June 24, 2017: Journal of Cancer Research and Clinical Oncology
https://www.readbyqxmd.com/read/28647345/cutaneous-nod2-expression-regulates-the-skin-microbiome-and-wound-healing-in-a-murine-model
#16
Helen Williams, Rachel A Crompton, Helen A Thomason, Laura Campbell, Gurdeep Singh, Andrew J McBain, Sheena M Cruickshank, Matthew J Hardman
The skin microbiome exists in dynamic equilibrium with the host but when the skin is compromised, bacteria can colonise the wound and impair wound healing. Thus the interplay between normal skin-microbial interactions versus pathogenic-microbial interactions in wound repair is important. Bacteria are recognised by innate host pattern recognition receptors (PRRs) and we previously demonstrated an important role for the PRR NOD2 (nucleotide-binding oligomerisation domains-containing protein 2) in skin wound repair...
June 21, 2017: Journal of Investigative Dermatology
https://www.readbyqxmd.com/read/28647339/the-effects-of-amoxicillin-and-vancomycin-on-parameters-reflecting-cholesterol-metabolism
#17
S Baumgartner, D Reijnders, M C J M Konings, A K Groen, D Lütjohann, G H Goossens, E E Blaak, J Plat
BACKGROUND: Changes in the microbiota composition have been implicated in the development of obesity and type 2 diabetes. However, not much is known on the involvement of gut microbiota in lipid and cholesterol metabolism. In addition, the gut microbiota might also be a potential source of plasma oxyphytosterol and oxycholesterol concentrations (oxidation products of plant sterols and cholesterol). Therefore, the aim of this study was to modulate the gut microbiota by antibiotic therapy to investigate effects on parameters reflecting cholesterol metabolism and oxyphytosterol concentrations...
June 21, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28646967/the-respiratory-microbiome-and-respiratory-infections
#18
Stefan A Unger, Debby Bogaert
Despite advances over the past ten years lower respiratory tract infections still comprise around a fifth of all deaths worldwide in children under five years of age with the majority in low- and middle-income countries. Known risk factors for severe respiratory infections and poor chronic respiratory health do not fully explain why some children become sick and others do not. The respiratory tract hosts bacteria that can cause respiratory infections but also normal commensal bacteria. Together, this microbial population is called the microbiome...
June 2017: Journal of Infection
https://www.readbyqxmd.com/read/28646951/fecal-microbiota-transplantation-for-recurrent-clostridium-difficile-infection-in-children
#19
Becky Chen, Vishal Avinashi, Simon Dobson
Fecal microbiota transplantation (FMT) is a relatively simple, promising treatment for recurrent Clostridium difficile infection. While there are a wide variety of approaches including mode of delivery, the results are nonetheless encouraging, even amongst younger children. Experience with FMT in the pediatric population is increasing, showing similar success compared to adults. This article will provide an overview of C. difficile infection along with review of the rationale, methods and complications of FMT including the current experience of FMT in children...
June 2017: Journal of Infection
https://www.readbyqxmd.com/read/28646502/the-liver-gut-microbiota-axis-modulates-hepatotoxicity-of-tacrine-in-the-rat
#20
Lian Yee Yip, Chiu Cheong Aw, Sze Han Lee, Yi Shuen Hong, Han Chen Ku, Winston Hecheng Xu, Jessalyn Mei Xuan Chan, Eleanor Jing Yi Cheong, Kern Rei Chng, Amanda Hui Qi Ng, Niranjan Nagarajan, Ratha Mahendran, Yuan Kun Lee, Edward R Browne, Eric Chun Yong Chan
The gut microbiota possesses diverse metabolic activities but its contribution towards heterogeneous toxicological responses is poorly understood. Here, we elucidate the role of the liver-gut microbiota axis in underpinning the hepatotoxicity of tacrine. We employed an integrated strategy combining pharmacokinetics, toxicology, metabonomics, genomics and metagenomics to elucidate and validate the mechanism of tacrine-induced hepatotoxicity in Lister hooded rats. Pharmacokinetic studies in rats demonstrated 3...
June 23, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
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