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https://www.readbyqxmd.com/read/28439263/microbial-diversity-of-browning-peninsula-eastern-antarctica-revealed-using-molecular-and-cultivation-methods
#1
Sarita Pudasaini, John Wilson, Mukan Ji, Josie van Dorst, Ian Snape, Anne S Palmer, Brendan P Burns, Belinda C Ferrari
Browning Peninsula is an ice-free polar desert situated in the Windmill Islands, Eastern Antarctica. The entire site is described as a barren landscape, comprised of frost boils with soils dominated by microbial life. In this study, we explored the microbial diversity and edaphic drivers of community structure across this site using traditional cultivation methods, a novel approach the soil substrate membrane system (SSMS), and culture-independent 454-tag pyrosequencing. The measured soil environmental and microphysical factors of chlorine, phosphate, aspect and elevation were found to be significant drivers of the bacterial community, while none of the soil parameters analyzed were significantly correlated to the fungal community...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28435359/comparative-antimicrobial-efficacy-of-selected-root-canal-irrigants-on-commonly-isolated-microorganisms-in-endodontic-infection
#2
Sandeep Dubey, Suparna Ganguly Saha, Balakrishnan Rajkumar, Tapan Kumar Dhole
OBJECTIVE: This study aims to evaluate and compare the antimicrobial efficacy of three selected root canal irrigants (BioPure MTAD, metronidazole, aztreonam) against microbes commonly isolated from polymicrobial microbiota of root canal infection. MATERIALS AND METHODS: This study was designed with four experimental groups (Group I - Bacteroides fragilis, Group II - Propionibacterium acnes, Group III - Enterococcus faecalis, Group IV - Candida albicans) based on the microbes selected for the study...
January 2017: European Journal of Dentistry
https://www.readbyqxmd.com/read/28434779/a-comparative-study-of-cutibacterium-propionibacterium-acnes-clones-from-acne-patients-and-healthy-controls
#3
H B Lomholt, C F P Scholz, H Brüggemann, H Tettelin, M Kilian
BACKGROUND: Cutibacterium (Propionibacterium) acnes is assumed to play an important role in the pathogenesis of acne. OBJECTIVES: To examine if clones with distinct virulence properties are associated with acne. METHODS: Multiple C. acnes isolates from follicles and surface skin of patients with moderate to severe acne and healthy controls were characterized by multilocus sequence typing. To determine if CC18 isolates from acne patients differ from those of controls in the possession of virulence genes or lack of genes conducive to a harmonious coexistence the full genomes of dominating CC18 follicular clones from six patients and five controls were sequenced...
April 19, 2017: Anaerobe
https://www.readbyqxmd.com/read/28434677/the-microbiome-of-the-prostate-tumor-microenvironment
#4
Ilaria Cavarretta, Roberto Ferrarese, Walter Cazzaniga, Diego Saita, Roberta Lucianò, Elisa R Ceresola, Irene Locatelli, Laura Visconti, Giovanni Lavorgna, Alberto Briganti, Manuela Nebuloni, Claudio Doglioni, Massimo Clementi, Francesco Montorsi, Filippo Canducci, Andrea Salonia
BACKGROUND: The advent of molecular-based methods of identification and characterization of complex microbial populations has led to a new era of microbial discovery. A detailed and comprehensive analysis of the microbial ecosystem of the pathologic and healthy prostate tissues has not been yet reported. OBJECTIVES: To characterize the microbiome possibly associated to the pathologic prostate microenvironment. DESIGN, SETTING, AND PARTICIPANTS: The microbiome profile of tumor, peri-tumor, and nontumor tissues was assessed on 16 radical prostatectomy-specimens...
April 20, 2017: European Urology
https://www.readbyqxmd.com/read/28433670/evaluation-of-the-routine-antimicrobial-susceptibility-testing-results-of-clinically-significant-anaerobic-bacteria-in-a-slovenian-tertiary-care-hospital-in-2015
#5
Samo Jeverica, Urša Kolenc, Manica Mueller-Premru, Lea Papst
The aim of our study was to determined antimicrobial susceptibility profiles of 2673 clinically significant anaerobic bacteria belonging to the major genera, isolated in 2015 in a large tertiary-care hospital in Slovenia. The species identification was performed by MALDI-TOF mass spectrometry. Antimicrobial susceptibility was determined immediately at the isolation of the strains against: penicillin, co-amoxiclav, imipenem, clindamycin and metronidazole, using gradient diffusion methodology and EUCAST breakpoints...
April 19, 2017: Anaerobe
https://www.readbyqxmd.com/read/28408748/the-microbiome-of-the-lung-and-its-extracellular-vesicles-in-nonsmokers-healthy-smokers-and-copd-patients
#6
Hyun Jung Kim, You-Sun Kim, Kang-Hyun Kim, Jun-Pyo Choi, Yoon-Keun Kim, Sunmi Yun, Lokesh Sharma, Charles S Dela Cruz, Jae Seung Lee, Yeon-Mok Oh, Sang-Do Lee, Sei Won Lee
Chronic obstructive pulmonary disease (COPD) is a chronic inflammatory disease, and bacterial infection plays a role in its pathogenesis. Bacteria secrete nanometer-sized extracellular vesicles (EVs), which may induce more immune dysfunction and inflammation than the bacteria themselves. We hypothesized that the microbiome of lung EVs might have distinct characteristics depending on the presence of COPD and smoking status. We analyzed and compared the microbiomes of 13 nonsmokers with normal spirometry, 13 smokers with normal spirometry (healthy smokers) and 13 patients with COPD by using 16S ribosomal RNA gene sequencing of surgical lung tissue and lung EVs...
April 14, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28407739/construction-of-a-novel-anaerobic-pathway-in-escherichia-coli-for-propionate-production
#7
Jing Li, Xinna Zhu, Jing Chen, Dongdong Zhao, Xueli Zhang, Changhao Bi
BACKGROUND: Propionate is widely used as an important preservative and important chemical intermediate for synthesis of cellulose fibers, herbicides, perfumes and pharmaceuticals. Biosynthetic propionate has mainly been produced by Propionibacterium, which has various limitations for industrial application. RESULTS: In this study, we engineered E. coli by combining reduced TCA cycle with the native sleeping beauty mutase (Sbm) cycle to construct a redox balanced and energy viable fermentation pathway for anaerobic propionate production...
April 14, 2017: BMC Biotechnology
https://www.readbyqxmd.com/read/28406998/structure-and-dynamics-of-the-gut-bacterial-microbiota-of-the-bark-beetle-dendroctonus-rhizophagus-curculionidae-scolytinae-across-their-life-stages
#8
Carlos Iván Briones-Roblero, Juan Alfredo Hernández-García, Roman Gonzalez-Escobedo, L Viridiana Soto-Robles, Flor N Rivera-Orduña, Gerardo Zúñiga
Bark beetles play an important role as agents of natural renovation and regeneration in coniferous forests. Several studies have documented the metabolic capacity of bacteria associated with the gut, body surface, and oral secretions of these insects; however, little is known about how the bacterial community structure changes during the life cycle of the beetles. This study represents the first comprehensive analysis of the bacterial community of the gut of the bark beetle D. rhizophagus during the insect's life cycle using 454 pyrosequencing...
2017: PloS One
https://www.readbyqxmd.com/read/28406170/identification-of-proteins-involved-in-the-anti-inflammatory-properties-of-propionibacterium-freudenreichii-by-means-of-a-multi-strain-study
#9
Stéphanie-Marie Deutsch, Mahendra Mariadassou, Pierre Nicolas, Sandrine Parayre, Rozenn Le Guellec, Victoria Chuat, Vincent Peton, Caroline Le Maréchal, Julien Burati, Valentin Loux, Valérie Briard-Bion, Julien Jardin, Coline Plé, Benoît Foligné, Gwénaël Jan, Hélène Falentin
Propionibacterium freudenreichii, a dairy starter, can reach a population of almost 10(9) propionibacteria per gram in Swiss-type cheese at the time of consumption. Also consumed as a probiotic, it displays strain-dependent anti-inflammatory properties mediated by surface proteins that induce IL-10 in leukocytes. We selected 23 strains with varied anti-inflammatory potentials in order to identify the protein(s) involved. After comparative genomic analysis, 12 of these strains were further analysed by surface proteomics, eight of them being further submitted to transcriptomics...
April 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28404159/a-microbiota-centric-view-of-diseases-of-the-upper-gastrointestinal-tract
#10
REVIEW
Gerardo Nardone, Debora Compare, Alba Rocco
The distinctive anatomy and physiology of the upper gastrointestinal tract and the difficulty of obtaining samples led to the theory that it was bacteria free. However, multiomics studies are indicating otherwise. Although influenced by both oral and gastric bacteria, the resident microbial ecosystem in the oesophagus is dominated by Streptococcus. A shift from Gram-positive to Gram-negative bacteria occurs in oesophagitis and Barrett's oesophagus, and this shift might be involved in the pathogenesis of oesophageal adenocarcinoma...
April 2017: Lancet. Gastroenterology & Hepatology
https://www.readbyqxmd.com/read/28401158/histological-identification-of-propionibacterium-acnes-in-nonpyogenic-degenerated-intervertebral-discs
#11
Ye Yuan, Zezhu Zhou, Yucheng Jiao, Changwei Li, Yuehuan Zheng, Yazhou Lin, Jiaqi Xiao, Zhe Chen, Peng Cao
Purpose. Low-virulence anaerobic bacteria, especially the Propionibacterium acnes (P. acnes), have been thought to be a new pathogeny for a series of disc diseases. However, until now, there has been no histological evidence to confirm this link. The purpose of this study was to confirm the presence of P. acnes in nonpyogenic intervertebral discs via histological observation. Method. Degenerated intervertebral discs were harvested from 76 patients with low back pain and/or sciatica but without any symptoms of discitis or spondylodiscitis...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28399545/propionibacterium-acnes-incubation-in-the-discs-can-result-in-time-dependent-modic-changes-a-long-term-rabbit-model
#12
Zhi Shan, Xuyang Zhang, Shengyun Li, Tianming Yu, Junhui Liu, Fengdong Zhao
STUDY DESIGN: A case control study of animal model of Modic changes (MCs) on Rabbits. OBJECTIVE: To evaluate the feasibility of inducing of MCs by injection of Propionibacterium acne (P. acnes) into the lumbar intervertebral discs of rabbits. SUMMARY OF BACKGROUND DATA: MCs have been widely observed, and assume to be closely associated with low back pain and P. acnes, but there are few animal models showing the progression of MCs. METHODS: Ten rabbits were used for the study...
April 10, 2017: Spine
https://www.readbyqxmd.com/read/28399543/comment-on-propionibacterium-acnes-coagulase-negative-staphylococcus-and-the-biofilm-like-intervertebral-disc
#13
Firooz Salehpour, Farhad Mirzaei, Seyed Ahmad Naseri Alavi
No abstract text is available yet for this article.
April 10, 2017: Spine
https://www.readbyqxmd.com/read/28398231/antibacterial-activity-of-ethanolic-extract-of-cinnamon-bark-honey-and-their-combination-effects-against-acne-causing-bacteria
#14
Elin Julianti, Kasturi K Rajah, Irda Fidrianny
Propionibacterium acnes and Staphylococcus epidermidis are the major skin bacteria that cause the formation of acne. The present study was conducted to investigate antibacterial activity of ethanolic extract of cinnamon bark, honey, and their combination against acne bacteria. The antibacterial activity of extract of cinnamon bark and honey were investigated against P. acnes and S. epidermidis using disc diffusion. Minimum inhibitory concentrations (MICs) and minimum bactericidal concentrations (MBCs) were attained using Clinical and Laboratory Standard Institute (CLSI) methods...
April 11, 2017: Scientia Pharmaceutica
https://www.readbyqxmd.com/read/28390886/epidemiology-and-antibiotic-resistance-of-late-prosthetic-knee-and-hip-infections
#15
Lorenzo Drago, Elena De Vecchi, Monica Bortolin, Luigi Zagra, Carlo L Romanò, Laura Cappelletti
BACKGROUND: Prosthetic joint infections (PJI) are still a major complication of hip and knee arthroplasties. Identification of the causative pathogens and knowledge of their antibiotic susceptibilities are essential for the management of these infections. The main purpose of the study was to identify and compare the causative bacteria of prosthetic knee and hip joint infections in a reference Italian orthopedic center and to characterize antibiotic resistance profiles of bacteria involved...
March 15, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28389412/endocarditis-caused-by-anaerobic-bacteria
#16
M Kestler, P Muñoz, M Marín, M A Goenaga, P Idígoras Viedma, A de Alarcón, J A Lepe, D Sousa Regueiro, J M Bravo-Ferrer, M Pajarón, C Costas, M V García-López, C Hidalgo-Tenorio, M Moreno, E Bouza
BACKGROUND: Infective endocarditis (IE) caused by anaerobic bacteria is a rare and poorly characterized disease. Most data reported in the literature are from case reports [1-3]. Therefore, we assessed the situation of anaerobic IE (AIE) in Spain using the database of the Spanish Collaboration on Endocarditis (GAMES). METHODS: We performed a prospective study from 2008 to 2016 in 26 Spanish centers. We included 2491 consecutive cases of definite IE (Duke criteria)...
April 5, 2017: Anaerobe
https://www.readbyqxmd.com/read/28389164/bactericidal-activity-and-post-antibiotic-effect-of-ozenoxacin-against-propionibacterium-acnes
#17
Shoji Kanayama, Kazuaki Okamoto, Fumiaki Ikeda, Ritsuko Ishii, Tatsumi Matsumoto, Naoki Hayashi, Naomasa Gotoh
Ozenoxacin, a novel non-fluorinated topical quinolone, is used for the treatment of acne vulgaris in Japan. We investigated bactericidal activity and post-antibiotic effect (PAE) of ozenoxacin against Propionibacterium acnes, a major causative bacterium of acne vulgaris. The minimum inhibitory concentrations (MICs) of ozenoxacin against 3 levofloxacin-susceptible strains (MIC of levofloxacin; ≤4 μg/mL) and 3 levofloxacin-resistant strains (MIC of levofloxacin; ≥8 μg/mL) ranged from 0.03 to 0.06 μg/mL and from 0...
April 4, 2017: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
https://www.readbyqxmd.com/read/28386469/propionibacterium-acnes-phylogenetic-type-iii-is-associated-with-progressive-macular-hypomelanosis
#18
Rolf L W Petersen, Christian F P Scholz, Anders Jensen, Holger Brüggemann, Hans B Lomholt
Progressive macular hypomelanosis (PMH) is a skin disorder that is characterized by hypopigmented macules and usually seen in young adults. The skin microbiota, in particular the bacterium Propionibacterium acnes, is suggested to play a role. Here, we compared the P. acnes population of 24 PMH lesions from eight patients with corresponding nonlesional skin of the patients and matching control samples from eight healthy individuals using an unbiased, culture-independent next-generation sequencing approach. We also compared the P...
March 2017: European Journal of Microbiology & Immunology
https://www.readbyqxmd.com/read/28384336/filthy-lucre-a-metagenomic-pilot-study-of-microbes-found-on-circulating-currency-in-new-york-city
#19
Julia M Maritz, Steven A Sullivan, Robert J Prill, Emre Aksoy, Paul Scheid, Jane M Carlton
BACKGROUND: Paper currency by its very nature is frequently transferred from one person to another and represents an important medium for human contact with-and potential exchange of-microbes. In this pilot study, we swabbed circulating $1 bills obtained from a New York City bank in February (Winter) and June (Summer) 2013 and used shotgun metagenomic sequencing to profile the communities found on their surface. Using basic culture conditions, we also tested whether viable microbes could be recovered from bills...
2017: PloS One
https://www.readbyqxmd.com/read/28377743/acute-hemiparesis-in-a-healthy-elderly-woman-where-and-what-is-the-lesion
#20
Ji Hoon Lee, Sung Hyuk Heo, Jin San Lee, Dae-Il Chang, Ki-Ho Park, Ji-Youn Sung, Il Ki Hong, Myeong Hee Kim, Bong Jin Park, Woo Suk Choi
Hemiparesis may be the result of lesions in the contralateral pyramidal tract in the brain or, less frequently, in the ipsilateral pyramidal tract in the upper cervical spinal cord. However, although rare, multiple lesions that simultaneously occur in both of these regions may be the cause of acute hemiparesis, and the clinical symptoms can often be misdiagnosed as a stroke. In addition, the correct diagnosis of these multiple central nervous system (CNS) lesions is very challenging if they are caused by infection from an unexpected microorganism...
2017: Frontiers in Neurology
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