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Anaerobe

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https://www.readbyqxmd.com/read/27913316/actinotignum-schaalii-subcutaneous-abscesses-in-a-patient-with-hidradenitis-suppurativa-case-report-and-literature-review
#1
REVIEW
Sofia Maraki, George Evangelou, Dimitra Stafylaki, Efstathia Scoulica
Actinotignum schaalii (formerly Actinobaculum schaalii) is a Gram-positive, facultative anaerobic rod that is typically involved in urinary tract infections in elderly patients or those with underlying urological pathologies. In contrast, abscess formation caused by A. schaalii is very rare. We present a case of multiple abscesses in the perineal area in a young patient with hidradenitis suppurativa associated with A. schaalii and Prevotella melaninogenica and review the relevant literature on the topic.
November 29, 2016: Anaerobe
https://www.readbyqxmd.com/read/27890724/clinical-characteristics-and-antimicrobial-susceptibilities-of-anaerobic-bacteremia-in-an-acute-care-hospital
#2
Thean Yen Tan, Lily Siew Yong Ng, Lee Ling Kwang, Suma Rao, Li Ching Eng
: This study investigated the clinical features of anaerobic bacteraemia in an acute-care hospital, and evaluated the antimicrobial susceptibility of these isolates to commonly available antibiotics. MATERIALS & METHODS: Microbiological and epidemiological data from 2009-2011were extracted from the laboratory information system and electronic medical records. One hundred and eleven unique patient episodes consisting of 116 anaerobic isolates were selected for clinical review and antibiotic susceptibility testing...
November 24, 2016: Anaerobe
https://www.readbyqxmd.com/read/27890692/rapid-identification-of-robinsoniella-peoriensis-using-specific-16s-rrna-gene-pcr-primers
#3
Terence R Whitehead, Christelle Anoma, Richard W McLaughlin
Robinsoniella peoriensis is a Gram-positive, spore-forming anaerobic bacterium initially isolated and characterized from swine manure and feces. Since then strains of this species have been identified from a variety of mammalian and other GI tracts. More recently strains of this species have been isolated from a plethora of human infections. Therefore, it is of great interest to develop methods to rapidly identify this microorganism in the medical and other laboratories. This report describes the use of PCR primers targeting the 16S rRNA gene of R...
November 24, 2016: Anaerobe
https://www.readbyqxmd.com/read/27887952/mini-review-update-on-bioaugmentation-in-anaerobic-processes-for-biogas-production
#4
Nzila Alexis
Anaerobic digestion (AD) is increasingly being used and exploited as a strategy to generate biomethane, which can be used as a renewable and clean energy. AD rests on the biodegradation of organic compounds in anaerobic condition, and these organic compounds are generally agricultural-, industrial- and domestic-wastes. However, problems of AD decrease efficiency, as the result of bioreactor stress, are generally encountered. The primarily cause of this stress is the presence of high concentrations of inhibitory substances such as nitrate, sulfate, heavy metals and oxygen among others...
November 22, 2016: Anaerobe
https://www.readbyqxmd.com/read/27871998/isolation-of-a-sulfide-producing-bacterial-consortium-from-cooling-tower-water-evaluation-of-corrosive-effects-on-galvanized-steel
#5
Esra Ilhan-Sungur, Derya Ozuolmez, Ayşın Çotuk, Nurhan Cansever, Gerard Muyzer
Sulfidogenic Clostridia and sulfate reducing bacteria (SRB) often cohabit in nature. The presence of these microorganisms can cause microbially influenced corrosion (MIC) of materials in different ways. To investigate this aspect, bacteria were isolated from cooling tower water and used in corrosion tests of galvanized steel. The identity of the isolates was determined by comparative sequence analysis of PCR-amplified 16S rDNA gene fragments, separated by denaturing gradient gel electrophoresis (DGGE). This analysis showed that, in spite of the isolation process, colonies were not pure and consisted of a mixture of bacteria affiliated with Desulfosporosinus meridiei and Clostridium sp...
November 18, 2016: Anaerobe
https://www.readbyqxmd.com/read/27871997/survival-and-prevalence-of-clostridium-difficile-in-manure-compost-derived-from-pigs
#6
Masaru Usui, Mayuko Kawakura, Nobuki Yoshizawa, Lai Lai San, Chie Nakajima, Yasuhiko Suzuki, Yutaka Tamura
Pigs, particularly piglets, have been identified as reservoir hosts of Clostridium difficile. To examine the survival ability of this pathogen in pig feces-based manure compost, C. difficile spores, which were prepared to contain as few vegetative cells as possible, were artificially inoculated into pig feces and incubated at different temperatures. While C. difficile survived in the feces incubated at temperatures below 37 °C for over 30 days, cell numbers gradually decreased at thermophilic temperatures (over 55 °C; p < 0...
November 18, 2016: Anaerobe
https://www.readbyqxmd.com/read/27867083/trends-in-antimicrobial-resistance-among-bacteroides-species-and-parabacteroides-species-in-the-united-states-from-2010-2012-with-comparison-to-2008-2009
#7
REVIEW
D R Snydman, N V Jacobus, L A McDermott, E J C Goldstein, L Harrell, S G Jenkins, D Newton, R Patel, D W Hecht
The susceptibility trends for Bacteroides fragilis and related species against various antibiotics were determined using data from 3 years of surveillance (2010-2012) on 779 isolates referred by 7 medical centers. The antibiotic test panel included imipenem, ertapenem, meropenem, ampicillin-sulbactam, piperacillin-tazobactam, cefoxitin, clindamycin, moxifloxacin, tigecycline, linezolid, chloramphenicol and . MICs were determined using the agar dilution CLSI reference method. Carbapenem resistance remained low (range 1...
November 17, 2016: Anaerobe
https://www.readbyqxmd.com/read/27865913/tio2-uv-based-photocatalytic-pretreatment-of-wheat-straw-for-biogas-production
#8
Merlin Alvarado-Morales, Panagiotis Tsapekos, Muhammad Awais, Muhammad Gulfraz, Irini Angelidaki
The present study deals with the application of an advanced oxidation process combining UV irradiation in the presence of the photocatalyst titanium dioxide (TiO2), as an effective pretreatment method of wheat straw as means for increasing its biodegradability for increased biogas production by anaerobic digestion (AD). Especially attention was paid in oxidation of the lignin in straw, besides release the sugars from the lignocellulosic structure of straw. Specifically, four different TiO2 concentrations (0...
November 16, 2016: Anaerobe
https://www.readbyqxmd.com/read/27847333/isolation-and-molecular-characterization-of-clostridium-perfringens-from-healthy-merino-lambs-in-patagonia-region-argentina
#9
A C Mignaqui, R B Marcellino, T Ronco, J S Pappalardo, B Nonnemann, K Pedersen, C A Robles
The presence and molecular characterization of Clostridium perfringens in healthy Merino lambs over a six-month period was investigated in this study. Overall, a high prevalence of C. perfringens was detected, even in day-old lambs. Even though the majority of the isolates were characterized as being of type A, types C and D were also isolated. Furthermore, a high genetic diversity was observed by PFGE among the type A isolates.
November 12, 2016: Anaerobe
https://www.readbyqxmd.com/read/27839939/letter-to-editor
#10
LETTER
Maja Rupnik
No abstract text is available yet for this article.
November 10, 2016: Anaerobe
https://www.readbyqxmd.com/read/27833033/establishment-and-development-of-the-intestinal-microbiota-of-preterm-infants-in-a-lebanese-tertiary-hospital
#11
Tarek Itani, Carole Ayoub Moubareck, Imad Melki, Clotilde Rousseau, Irène Mangin, Marie-José Butel, Dolla Karam Sarkis
The establishment and development of the intestinal microbiota is known to be associated with profound short- and long-term effects on the health of full-term infants (FTI), but studies are just starting for preterm infants (PTI). The data also mostly come from western countries and little information is available for the Middle East. Here, we determined the composition and dynamics of the intestinal microbiota during the first month of life for PTI (n = 66) and FTI (n = 17) in Lebanon. Fecal samples were collected weekly and analyzed by quantitative PCR (q-PCR) and temporal temperature gradient gel electrophoresis (TTGE)...
November 8, 2016: Anaerobe
https://www.readbyqxmd.com/read/27816724/effect-of-early-antibiotic-administration-on-cecal-bacterial-communities-and-their-metabolic-profiles-in-pigs-fed-diets-with-different-protein-levels
#12
Chuanjian Zhang, Miao Yu, Yuxiang Yang, Chunlong Mu, Yong Su, Weiyun Zhu
The study investigated the effects of early antibiotic administration (EAA) on cecal bacterial communities and their metabolic profiles in pigs fed diets with different protein levels. Eighteen litters (total 180) of piglets on day (d) 7 were fed either a commercial creep feed or commercial creep feed + antibiotic (Olaquindox, Oxytetracycline Calcium and Kitasamycin) until d 42. On d 42, pigs within each group were further randomly fed a normal crude protein (CP) diet (20% and 18% CP from d 42 to d 77 and d 77 to d 120, respectively) or a low-CP diet (16% and 14% CP from d 42 to d 77 and d 77 to d 120, respectively), generating 4 groups, Control-Low CP (Con-LP), Control-normal CP (Con-NP), Antibiotic-Low CP (Ant-LP) and Antibiotic-Normal CP (Ant-NP), respectively...
November 2, 2016: Anaerobe
https://www.readbyqxmd.com/read/27810332/response-to-maja-rupnik
#13
LETTER
Paul A Lawson, Diane M Citron, Kerin L Tyrell, Sydney M Finegold
No abstract text is available yet for this article.
October 31, 2016: Anaerobe
https://www.readbyqxmd.com/read/27794467/gaba-production-and-structure-of-gadb-gadc-genes-in-lactobacillus-and-bifidobacterium-strains-from-human-microbiota
#14
R A Yunes, E U Poluektova, M S Dyachkova, K M Klimina, A S Kovtun, O V Averina, V S Orlova, V N Danilenko
Gamma-amino butyric acid (GABA) is an active biogenic substance synthesized in plants, fungi, vertebrate animals and bacteria. Lactic acid bacteria are considered the main producers of GABA among bacteria. GABA-producing lactobacilli are isolated from food products such as cheese, yogurt, sourdough, etc. and are the source of bioactive properties assigned to those foods. The ability of human-derived lactobacilli and bifidobacteria to synthesize GABA remains poorly characterized. In this paper, we screened our collection of 135 human-derived Lactobacillus and Bifidobacterium strains for their ability to produce GABA from its precursor monosodium glutamate...
October 26, 2016: Anaerobe
https://www.readbyqxmd.com/read/27793740/emergence-of-fluoroquinolone-resistant-propionibacterium-acnes-caused-by-amino-acid-substitutions-of-dna-gyrase-but-not-dna-topoisomerase-iv
#15
Keisuke Nakase, Yui Sakuma, Hidemasa Nakaminami, Norihisa Noguchi
With the aim of elucidating the mechanisms of fluoroquinolones resistance in Propionibacterium acnes, we determined the susceptibility of fluoroquinolones in 211 isolates from patients with acne vulgaris. We identified five isolates (2.4%) with reduced susceptibility to nadifloxacin (minimum inhibitory concentration ≥ 4 μg/ml). Determination of the sequences of the DNA gyrase (gyrA and gyrB) and DNA topoisomerase (parC and parE) genes showed the amino acid substitutions Ser101Leu and Asp105Gly of GyrA in four and one of the isolates, respectively...
October 25, 2016: Anaerobe
https://www.readbyqxmd.com/read/27789247/severe-forefoot-infection-complicated-by-fusobacterium-russii
#16
Elisabeth Ullrich, Andrea J Grisold, Gebhard Feierl, David B Lumenta, Eva Leitner
We present the first case of a complicated foot infection caused by Fusobacterium russii in Austria. F. russii is highly associated with mammals such as cats and dogs. Our case underlines the difficulties in isolation and identification of anaerobes and the pitfalls in antimicrobial treatment of polymicrobial infections.
October 24, 2016: Anaerobe
https://www.readbyqxmd.com/read/27789246/detection-of-toxigenic-clostridium-perfringens-and-clostridium-botulinum-from-food-sold-in-lagos-nigeria
#17
Emelda E Chukwu, Francisca O Nwaokorie, AkitoyeO Coker, Mario J Avila-Campos, Rosa L Solis, Luis A Llanco, Folasade T Ogunsola
Food-borne diseases contribute to the huge burden of sickness and death globally and in the last decade, have become more frequently reported in Africa. In line with this, food safety is becoming a significant and growing public health problem in Nigeria. Diarrhoea is a common problem in Nigeria and has been reported but there has been little data on the possibility of clostridia as aetiological agents. Clostridium species are ubiquitous in the environment and in the gastrointestinal tract of man and animals and can serve as a marker for faecal contamination...
October 24, 2016: Anaerobe
https://www.readbyqxmd.com/read/27771394/bacteroides-pyogenes-causing-serious-human-wound-infection-from-animal-bites
#18
Jillian S Y Lau, Tony M Korman, Alex Yeung, Richard Streitberg, Michelle J Francis, Maryza Graham
Bacteroides pyogenes is part of the normal oral flora of domestic animals. There is one previous report of human infection, with B. pyogenes bacteremia following a cat bite (Madsen 2011). We report seven severe human infections where B. pyogenes was identified by Bruker matrix-assisted laser desorption ionization-time of flight mass spectrometry (MALDTI-TOF MS), but not by VITEK MS and was misidentified by VITEK ANC card.
October 19, 2016: Anaerobe
https://www.readbyqxmd.com/read/27756620/virulence-arsenal-of-the-most-pathogenic-species-among-the-gram-positive-anaerobic-cocci-finegoldia-magna
#19
REVIEW
Lyudmila Boyanova, Rumyana Markovska, Ivan Mitov
This review focuses on the virulence arsenal of the most pathogenic species among Gram positive anaerobic cocci, Finegoldia magna according to recently published data from 2012 to 2016. Virulence factors like sortase dependent pili and F. magna adhesion factor (FAF) facilitate the start of the infection. Albumin binding protein (PAB) enhances F. magna survival. FAF, subtilisin-like extracellular serine protease (SufA) and superantigen protein L protect the bacteria from factors of innate defense system. SufA, capsule and tissue-destroying enzymes provide a deep penetration or spread of the infections and the protein L is associated with infection severity...
October 15, 2016: Anaerobe
https://www.readbyqxmd.com/read/27756619/effect-of-smokeless-tobacco-products-on-human-oral-bacteria-growth-and-viability
#20
Min Liu, Jinshan Jin, Hongmiao Pan, Jinhui Feng, Carl E Cerniglia, Maocheng Yang, Huizhong Chen
To evaluate the toxicity of smokeless tobacco products (STPs) on oral bacteria, seven smokeless tobacco aqueous extracts (STAEs) from major brands of STPs and three tobacco-specific N-nitrosamines (TSNAs) were used in a growth and viability test against 38 oral bacterial species or subspecies. All seven STAEs showed concentration-dependent effects on the growth and viability of tested oral bacteria under anaerobic culture conditions, although there were strain-to-strain variations. In the presence of 1 mg/ml STAEs, the growth of 4 strains decreased over 0...
October 15, 2016: Anaerobe
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