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Folia Microbiologica

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https://www.readbyqxmd.com/read/28913757/mycobacterium-shimoidei-cavitary-pulmonary-disease-with-favorable-outcome
#1
Vide Popovic, Dragan Arar, Dragica Roso Popovic, Igor Barisic, Marija Tonkic, Irena Peric, Anita Novak, Zana Rubic, Vera Katalinic-Jankovic, Mateja Jankovic Makek, Ivana Goic-Barisic
We report a case of cavitary pulmonary disease caused by Mycobacterium shimoidei in 67-year-old female with history of asthma. Even though susceptibility testing was not available, choice of treatment regimen (streptomycin, rifampicin, ethambutol, and clarithromycin), based on a few cases with favorable outcome reported in the literature, resulted with an excellent clinical, microbiological, and radiological response. This is the first report of pulmonary disease caused by M. shimoidei, but also the first ever isolation of M...
September 14, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28905285/effect-of-bacteriocin-and-exopolysaccharides-isolated-from-probiotic-on-p-aeruginosa-pao1-biofilm
#2
Vivek Sharma, Kusum Harjai, Geeta Shukla
Microorganisms develop biofilms on indwelling medical devices and are associated with biofilm-related infections, resulting in substantial morbidity and mortality. Therefore, to prevent and control biofilm-associated infections, the present study was designed to assess the anti-biofilm potential of postbiotics derived from probiotic organisms against most prevalent biofilm-forming Pseudomonas aeruginosa PAO1. Eighty lactic acid bacteria isolated from eight neonatal fecal samples possessed antibacterial activity against P...
September 14, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28891002/fusarium-equiseti-lpsc-1166-and-its-in-vitro-role-in-the-decay-of-heterostachys-ritteriana-leaf-litter
#3
Ernesto Franco, María I Troncozo, Margot Baez, María V Mirífico, Gerardo L Robledo, Pedro A Balatti, Mario C N Saparrat
The role of microorganisms in litter degradation in arid and semi-arid zones, where soil and water salinization is one of the main factors limiting carbon turnover and decay, remains obscure. Heterostachys ritteriana (Amaranthaceae), a halophyte shrub growing in arid environments such as "Salinas Grandes" (Córdoba, Argentina), appears to be the main source of organic matter in the area. Little is known regarding the microorganisms associated with H. ritteriana, although they are a potential source of enzymes such as cellulolytic ones, which might be important in biotechnological fields such as bioethanol production using ionic liquids...
September 10, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28889401/severity-of-drug-resistance-and-co-existence-of-enterococcus-faecalis-in-diabetic-foot-ulcer-infections
#4
Kavitha Shettigar, Deepika V Bhat, Kapaettu Satyamoorthy, Thokur Sreepathy Murali
The genes encoding aminoglycoside resistance in Enterococcus faecalis may promote collateral aminoglycoside resistance in polymicrobial wounds. We studied a total of 100 diabetic foot ulcer samples for infection and found 60 samples to be polymicrobial, 5 to be monomicrobial, and 35 samples to be culture negative. A total of 65 E. faecalis isolates were screened for six genes coding for aminoglycoside resistance, antibiotic resistance patterns, and biofilm production. Infectious Diseases Society of America/International Working Group on the Diabetic Foot system was used to classify the wound ulcers...
September 9, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28887734/mating-of-natural-saccharomyces-cerevisiae-strains-for-improved-glucose-fermentation-and-lignocellulosic-inhibitor-tolerance
#5
Trudy Jansen, Justin Wallace Hoff, Neil Jolly, Willem Heber van Zyl
Natural Saccharomyces cerevisiae isolates from vineyards in the Western Cape, South Africa were evaluated for ethanol production in industrial conditions associated with the production of second-generation biofuels. The strains displayed high phenotypic diversity including the ability to grow at 45 °C and in the presence of 20% (v/v) ethanol, strain YI13. Strains HR4 and YI30 were inhibitor-tolerant under aerobic and oxygen-limited conditions, respectively. Spore-to-spore hybridization generated progeny that displayed heterosis, including increased ethanol productivity and improved growth in the presence of a synthetic inhibitor cocktail...
September 8, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28823059/influence-of-dextrins-on-the-production-of-spiramycin-and-impurity-components-by-streptomyces-ambofaciens
#6
Kaiya Yao, Shuhong Gao, Yanjie Wu, Zhen Zhao, Wen Wang, Quangui Mao
Spiramycin is a 16-membered macrolide antibiotic produced by Streptomyces ambofaciens and used in human medicine for the treatment of various respiratory tract and genital infections. Several impurities were detected in spiramycin-fermentation broth, especially impurities D and F, which decreased the separation-extraction yield and increased production cost. Dextrins, as the main carbon source, influence the accumulation of spiramycin and impurities. In this work, two types of dextrin from vendor Y and Z were compared to study their influences on spiramycin production...
August 19, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28812258/chromosomal-flhb1-gene-of-the-alphaproteobacterium-azospirillum-brasilense-sp245-is-essential-for-correct-assembly-of-both-constitutive-polar-flagellum-and-inducible-lateral-flagella
#7
Yulia Filip'echeva, Andrei Shelud'ko, Alexei Prilipov, Elizaveta Telesheva, Dmitry Mokeev, Andrei Burov, Lilia Petrova, Elena Katsy
Azospirillum brasilense has the ability of swimming and swarming motility owing to the work of a constitutive polar flagellum and inducible lateral flagella, respectively. The interplay between these flagellar systems is poorly understood. One of the key elements of the flagellar export apparatus is the protein FlhB. Two predicted flhB genes are present in the genome of A. brasilense Sp245 (accession nos. HE577327-HE577333). Experimental evidence obtained here indicates that the chromosomal coding sequence (CDS) AZOBR_150177 (flhB1) of Sp245 is essential for the production of both types of flagella...
August 15, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28776170/viridans-group-streptococci-bloodstream-infections-in-neutropenic-adult-patients-with-hematologic-malignancy-single-center-experience
#8
J Radocha, P Paterová, A Zavřelová, B Víšek, F Gabalec, H Žemličková, P Žák
Viridans group streptococci bloodstream infections (VGS BSI) remain a significant cause of mortality and morbidity in patients with severe neutropenia. The goal of our study was to evaluate clinical course and microbiological susceptibility of VGS BSI at our center. Retrospective analysis of all microbiologically documented bloodstream infections caused by VGS during the 9-year time period (from January 2006 until December 2014) was carried out. Only patients with severe neutropenia (< 500/μL) were included in the study...
August 3, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28770427/testing-the-efficacy-of-antimicrobial-peptides-in-the-topical-treatment-of-induced-osteomyelitis-in-rats
#9
Pavel Melicherčík, Václav Čeřovský, Ondřej Nešuta, David Jahoda, Ivan Landor, Rastislav Ballay, Petr Fulín
Joint replacement infections and osteomyelitis are among the most serious complications in orthopaedics and traumatology. The risk factors for these infections are often bacterial resistance to antimicrobials. One of the few solutions available to control bacterial resistance involves antimicrobials, which have a different mechanism of action from traditional antibiotics. Antimicrobial peptides (AMP) appear to be highly promising candidates in the treatment of resistant infections. We have identified several AMP in the venom of various wild bees and designed analogues that show potent antimicrobial activity and low toxicity against eukaryotic cells...
August 2, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28755138/erratum-to-herpesvirus-an-underestimated-virus
#10
Daniele Zendrini Rechenchoski, Ligia Carla Faccin-Galhardi, Rosa Elisa Carvalho Linhares, Carlos Nozawa
No abstract text is available yet for this article.
July 28, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28741042/the-first-case-of-lymphogranuloma-venereum-in-a-woman-in-east-central-europe-and-its-multiple-co-infections
#11
Katerina Juzlova, Filip Rob, Hana Zakoucka, Andrea Kubatova, Zuzana Secnikova, Martina Krasova, Petr Bohac, Jana Hercogova
We are reporting the first case of lymphogranuloma venereum in women in East-Central Europe. A 22-year-old heterosexual woman attended our department of venereology. She complained about a burning sensation in the urethra and vaginal discharge. Many tests were performed, and lymphogranuloma venereum, syphilis, gonorrhea, chlamydial urethritis and cervicitis, genital herpes, genital warts, and hepatitis C were diagnosed. Lymphogranuloma venereum was originally endemic in tropical and subtropical areas, but since 2003, outbreaks of this infection have been reported in North America, Europe, and Australia in men who have sex with men (MSM) community...
July 24, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28667598/comparison-of-two-bacterial-dna-extraction-methods-from-non-polluted-and-polluted-soils
#12
Mélanie Mazziotti, Sonia Henry, Philippe Laval-Gilly, Antoine Bonnefoy, Jaïro Falla
DNA extraction from soil samples is a critical step for molecular biology analyses. The present study compared the efficiency of two DNA isolation methods from non-polluted and polluted soils with or without the presence of a plant. Both applied methods used chemical and physical lyses, but method 1 had an additional physical disruption. The main difference between these two methods was the humic acid purification technique as it was carried out during cell lysis for method 1 and after cell lysis for method 2...
July 1, 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28236176/kinetics-of-interaction-between-substrates-substrate-analogs-and-benzoate-1-2-dioxygenase-from-benzoate-degrading-rhodococcus-opacus-1cp
#13
Inna P Solyanikova, Oksana V Borzova, Elena V Emelyanova
Benzoate 1,2-dioxygenase (BDO) of Rhodococcus opacus 1CP, which carried out the initial attack on benzoate, was earlier shown to be the enzyme with a narrow substrate specificity. A kinetics of interaction between benzoate 1,2-dioxygenase and substituted benzoates was assessed taking into account the enlarged list of the type of inhibition and using whole cells grown on benzoate. The type of inhibition was determined and the constants of a reaction of BDO with benzoate in the presence of 2-chlorobenzoate (2CBA), 3,5-dichlorobenzoate (3,5DCBA), and 3-methylbenzoate (3MBA) were calculated...
July 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28213749/effect-of-continuous-sub-culturing-on-infectivity-of-clostridium-perfringens-atcc13124-in-mouse-gas-gangrene-model
#14
Ravi Bhushan Kumar, Syed Imteyaz Alam
Clostridium perfringens is a Validated Biological Agent and a pathogen of medical, veterinary, and military significance. Gas gangrene is the most destructive of all the clostridial diseases and is caused by C. perfringens type A strains wherein the infection spreads quickly (several inches per hour) with production of gas. Influence of repeated in vitro cultivation on the infectivity of C. perfringens was investigated by comparing the surface proteins of laboratory strain and repository strains of the bacterium using 2DE-MS approach...
July 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28213748/immobilization-of-irpex-lacteus-to-liquid-core-alginate-beads-and-their-application-to-degradation-of-pollutants
#15
Jan Šíma, Rachel Milne, Čeněk Novotný, Pavel Hasal
White rot fungi (WRF) are applicable to biodegradation of recalcitrant pollutants. However, excessive biomass growth typical for WRF cultivation can hinder their large scale applications. Therefore, immobilization of Irpex lacteus to liquid-core alginate beads restricting excessive mycelium growth and simultaneously keeping high degradation rate of pollutants was tested. Effective diffusivities of dyes to the beads varied from (2.98 ± 0.69) × 10(-10) to (10.27 ± 2.60) × 10(-10) m(2)/s. Remazol Brilliant Blue R (RBBR), Reactive Orange 16 (RO16), and Naphthol Blue Black (NBB) were used as model dyes...
July 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28188482/isolation-of-pseudomonas-fluorescens-species-highly-resistant-to-pentachlorobenzene
#16
Itxaso Montánchez, Anna Chao Kaberdina, Elena Sevillano, Lucía Gallego, Susana Rodríguez-Couto, Vladimir R Kaberdin
Polychlorinated aromatic compounds, including pentachlorobenzenes and hexachlorobenzenes, are recalcitrant industrial pollutants that cause adverse effects on living cells. In this paper, the isolation of Pseudomonas fluorescens species with high resistance to pentachlorobenzene (PeCB) is reported. It was found that, in contrast to its slightly negative effect on P. fluorescens growth, PeCB readily inhibited the cell growth of Serratia spp. and Escherichia coli strains, thus indicating that inhibition of bacterial growth by PeCB is species-dependent...
July 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28164244/candida-krusei-and-candida-glabrata-reduce-the-filamentation-of-candida-albicans-by-downregulating-expression-of-hwp1-gene
#17
Patrícia Pimentel de Barros, Fernanda Freire, Rodnei Dennis Rossoni, Juliana Campos Junqueira, Antonio Olavo Cardoso Jorge
Pathogenicity of Candida albicans is associated with its capacity switch from yeast-like to hyphal growth. The hyphal form is capable to penetrate the epithelial surfaces and to damage the host tissues. Therefore, many investigations have focused on mechanisms that control the morphological transitions of C. albicans. Recently, certain studies have showed that non-albicans Candida species can reduce the capacity of C. albicans to form biofilms and to develop candidiasis in animal models. Then, the objective of this study was to evaluate the effects of Candida krusei and Candida glabrata on the morphogenesis of C...
July 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28161814/soil-myxobacteria-as-a-potential-source-of-polyketide-peptide-substances
#18
Ivana Charousová, Heinrich Steinmetz, Juraj Medo, Soňa Javoreková, Joachim Wink
Myxobacteria, a group of antimicrobial producing bacteria, have been successfully cultured and characterized from ten soil samples collected from different parts of Slovakia. A total of 79 myxobacteria belonging to four genera (Myxococcus, Corallococcus, Sorangium, and Polyangium) were isolated based on aspects of their life cycle. Twenty-five of them were purified, fermented, and screened for antimicrobial activities against 11 test microorganisms. Results indicated that crude extracts showed more significant activities against Gram-positive than against Gram-negative bacteria or fungi...
July 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28132138/tolerance-and-stress-response-of-sclerotiogenic-aspergillus-oryzae-g15-to-copper-and-lead
#19
Dan-Dan Long, Rong-Rong Fu, Jian-Rong Han
Aspergillus oryzae G15 was cultured on Czapek yeast extract agar medium containing different concentrations of copper and lead to investigate the mechanisms sustaining metal tolerance. The effects of heavy metals on biomass, metal accumulation, metallothionein (MT), malondialdehyde (MDA), superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) were evaluated. Cu and Pb treatment remarkably delayed sclerotial maturation and inhibited mycelial growth, indicating the toxic effects of the metals. Cu decreased sclerotial biomass, whereas Pb led to an increase in sclerotial biomass...
July 2017: Folia Microbiologica
https://www.readbyqxmd.com/read/28130760/analysis-of-icam1-gene-polymorphism-in-slovak-multiple-sclerosis-patients
#20
Ivana Shawkatová, Juraj Javor, Zuzana Párnická, Mária Bucová, Daniela Čopíková-Cudráková, Jozef Michalík, Karin Gmitterová, Daniel Čierny, Milan Buc, Vladimíra Ďurmanová
Infiltration of immune cells into CNS is one of the essential events in multiple sclerosis (MS) development. Adhesion molecules like the intercellular adhesion molecule 1 (ICAM-1) play critical role in this process. Therefore, the ICAM1 gene containing two important single-nucleotide polymorphisms (SNPs) belongs to candidate loci with possible involvement in MS susceptibility and/or severity. The objective of our case-control study was to analyze the association of two functional ICAM1 polymorphisms rs1799969 (or G241R) and rs5498 (or K469E) with susceptibility to MS and evaluate their influence on the age at disease onset, severity, neurological disability and progression rate...
July 2017: Folia Microbiologica
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