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Polish Journal of Microbiology

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https://www.readbyqxmd.com/read/30015465/development-and-evaluation-of-a-latex-agglutination-test-for-the-identification-of-francisella-tularensis-subspecies-pathogenic-for-human
#1
Waldemar Rastawicki, Kamila Formińska, Aleksandra A Zasada
Francisella tularensis are highly infectious bacteria causing a zoonotic disease called tularemia. Identification of this bacterium is based on antigen detection or PCR. The paper presents a latex agglutination test (LAT) for rapid identification of clinically relevant F. tularensis subspecies. The test can be performed within three minutes with live or inactivated bacteria. The possibility to test the inactivated samples reduces the risk of laboratory acquired infection and allows performing the test under BSL-2 conditions...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015464/new-gene-responsible-for-resistance-of-clinical-corynebacteria-to-macrolide-lincosamide-and-streptogramin-b
#2
Magdalena Szemraj, Anna Kwaszewska, Eligia M Szewczyk
The subject of the study was phenotypic marking of the antibiotic susceptibility and MLSB resistance mechanism in Corynebacterium spp. isolated from human skin (18 isolates) and from clinical materials (19 isolates). The strains were tested for the presence of the erm(A), erm(B), erm(C), erm(X), lnu(A), msr(A), msr(B) and mph(C) genes. Clinical isolates showed wide resistance to antibiotics. In 89% clinical isolates and 72% skin microbiota a constitutive type of MLSB resistance was found. In 12 clinical isolates the erm(C) gene was detected-eight of which had erm(X) as well as erm(C), two harboured erm(X), erm(C) and erm(A) and two demonstrated only erm(C)...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015463/seroprevalence-of-selected-zoonotic-agents-among-hunters-from-eastern-poland
#3
Małgorzata Tokarska-Rodak, Marcin Weiner, Monika Szymańska-Czerwińska, Anna Pańczuk, Krzysztof Niemczuk, Jacek Sroka, Mirosław Różycki, Wojciech Iwaniak
The aim of our study was the collection of seroprevalence data for Toxoplasma gondii, Coxiella burnetii, Trichinella spp., and Francisella tularensis from hunters in Lublin Province. The antibodies against T. gondii and C. burnetii were recorded in 38.5% and 16.2% of the sera, respectively. 4.05% of the sera were seropositive for both T. gondii and C. burnetii. None of the sera tested reacted positively with F. tulariensis or Trichinella spp. Seroprevalence of T. gondii and C. burnetii is common among the hunters from Lublin Province...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015462/sero-epidemiology-and-risk-factor-analysis-of-measles-among-children-in-pakistan
#4
Muhammad Hidayat Rasool, Ahsan Rafiq, Muhammad Zeeshan Nawaz, Muhammad Shafique, Muhammad Saqalein
Comparative cross sectional study was conducted on blood samples (n = 231) collected from children of 1 to 10 years of age in Punjab Pakistan through convenient sampling method. Indirect haemagglutination assay (IHA) was standardized and used for serodiagnosis and evaluation of humoral immunity against measles. Associated risk factors including age, gender, locale, and vaccination status were analyzed. Geometric mean titre (GMT) of vaccinated individuals was significantly higher (p < 0.001) than that of non-vaccinated individuals showing that IHA titre of vaccinated individuals was a measure of humoral immune response; whereas, in case of non-vaccinated individuals an indicative of exposure to the measles infection...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015461/global-transcriptome-changes-of-biofilm-forming-staphylococcus-epidermidis-responding-to-total-alkaloids-of-sophorea-alopecuroides
#5
Cui-Ping Guan, Hui-Xia Luo, H E Fang, Xue-Zhang Zhou
Transcriptome changes of biofilm-forming Staphylococcus epidermidis response to total alkaloids of Sophorea alopecuroides was observed. Bioinformatic analyses were further used to compare the differential gene expression between control and the treated samples. It was found that 282 genes were differentially expressed, with 92 up-regulated and 190 down-regulated. These involved down-regulation of the sulfur metabolism pathway. It was suggested that inhibitory effects on Staphylococcus epidermidis and its biofilm formation of the total alkaloids of S...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015460/identification-of-pathogenicity-of-yersinia-enterocolitica-in-pig-tonsils-using-the-real-time-pcr
#6
Milena A Stachelska
The application of DNA-based methods enables to identify Yersinia enterocolitica carrying the ail-gene with a greater sensitivity compared to culture methods and biochemical tests used for detection of pathogenic Y. enterocolitica in animal and food samples. In this study, 100 samples of pig tonsils were examined, among which 17 were positive for the ail gene. Additionally, biochemical tests and RT-PCR showed that nine Y. enterocolitica isolates carried the ail-gene. Two Y. enterocolitica isolates of 1A biotype had the ail gene...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015459/the-usefulness-of-chromogenic-media-for-qualitative-and-semi-quantitative-diagnostic-of-urinary-tract-infections
#7
Elżbieta M Stefaniuk
The aim of this study was to evaluate the usefulness of chromogenic media for isolation of bacteria from urine and direct identification of UTI pathogens. A total of 100 urine specimens were inoculated on blood agar and MacConkey agar as a reference method and on the following media to be tested: chromID® CPS® Elite (CPSE, bioMérieux), CHROMagarTM Orientation (BioMaxima), BD CHROMagar Orientation Medium (ORI, Becton Dickinson), CHROMagarTM Orientation (ORIE, Graso) and Brillance UTI Clarity Agar (UTI C, Oxoid)...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015458/distribution-of-cell-envelope-proteinases-genes-among-polish-strains-of-lactobacillus-helveticus
#8
Katarzyna W Skrzypczak, Waldemar Z Gustaw, Adam D Waśko
Most of the lactic acid bacteria (LAB) are able to grow in milk mainly due to the activity of a complex and well-developed proteolytic system. Cell envelope-associated proteinases (CEPs) begin casein hydrolysis and allow for releasing the peptides, enclosed in the structure of native milk proteins that are essential for growth of Lactobacillus helveticus. The biodiversity of genes encoding CEPs among L. helveticus strains can have an effect on some technological parameters such as acid production, bacterial growth rate in milk as well as liberation of biologically active peptides...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015457/the-heavy-metal-resistance-determinant-of-newly-isolated-bacterium-from-a-nickel-contaminated-soil-in-southwest-slovakia
#9
Matej Remenár, Anna Kamlárová, Jana Harichová, Marcel Zámocký, Peter Ferianc
A bacterial isolate MR-CH-I2 [KC809939] isolated from soil contaminated mainly by high nickel concentrations in southwest Slovakia was previously found carrying nccA-like heavy-metal resistance determinant, marked as MR-CH-I2-HMR [KF218096]. According to phylogenetic analysis of short (696 bp) 16S rDNA (16S rRNA) sequences this bacterium was tentatively assigned to Uncultured beta proteobacterium clone GC0AA7ZA05PP1 [JQ913301]. nccA-like gene product was on the same base of its partial (581 bp) sequences tentatively assigned to CzcA family heavy metal efflux pump [YP_001899332] from Ralstonia picketii 12J with 99% similarity...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015456/screening-and-identification-of-trichoderma-strains-isolated-from-natural-habitats-with-potential-to-cellulose-and-xylan-degrading-enzymes-production
#10
Roman Marecik, Lidia Błaszczyk, Róża Biegańska-Marecik, Agnieszka Piotrowska-Cyplik
A total of 123 Trichoderma strains were isolated from different habitats and tested for their ability to degrade cellulose and xylan by simple plate screening method. Among strains, more than 34 and 45% respectively, exhibited higher cellulolytic and xylanolytic activity, compared to the reference strain T. reesei QM 9414. For strains efficiently degrading cellulose, a highest enzyme activity was confirmed using filter paper test, and it resulted in a range from 1.01 to 7.15 FPU/ml. Based on morphological and molecular analysis, the isolates were identified as Trichoderma...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015455/genetic-analysis-method-for-staphylococcus-chromogenes-associated-with-goat-mastitis
#11
Rocío A Ruiz-Romero, Roberto A Cervantes-Olivares, Andrés E Ducoing-Watty, Daniel Martínez-Gómez, Efrén Díaz-Aparicio, Estela T Méndez-Olvera
Mastitis in goats is mainly caused by coagulase-negative Staphylococcus (CNS). The identification methods for this group are based on evaluating the expression of phenotypic characteristics such as the ability to metabolize various substrates; however, this is disadvantageous as these methods are dependent on gene expression. In recent years, genotyping methods such as the Multiple Locus Variable-Number Tandem Repeat Analysis (MLVA) and gene identification have been useful for epidemiological study of several bacterial species...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015454/isolation-of-bacteriocin-producing-staphylococcus-spp-strains-from-human-skin-wounds-soft-tissue-infections-and-bovine-mastitis
#12
Magdalena Zalewska, John J Churey, Randy W Worobo, Sławomir Milewski, Piotr Szweda
A collection of 206 Staphylococcus spp. isolates was investigated for their ability to produce compounds exhibiting antistaphylococcal activity. This group included Staphylococcus aureus, Staphylococcus epidermidis, Staphylococcus xylosus strains recovered from bovine mastitis (n = 158) and human skin wounds and soft tissues infections (n = 48). Production of substances with antimicrobial activity was observed in six strains. Five of them were recovered from bovine mastitis, and one was isolated from the infected human skin wound...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015453/brucella-virulence-factors-pathogenesis-and-treatment
#13
Patrycja Głowacka, Dorota Żakowska, Katarzyna Naylor, Marcin Niemcewicz, Agata Bielawska-Drózd
Brucellae are Gram-negative, small rods infecting mammals and capable of causing disease called brucellosis. The infection results in abortion and sterility in domestic animals (sheeps, pigs, rams etc). Especially dangerous for humans are: Brucella melitensis, Brucella suis, Brucella abortus, and Brucella canis that trigger unspecific symptoms (flu-like manifestation). Brucella rods are introduced via host cells, by inhalation, skin abrasions, ingestion or mucosal membranes. The most important feature of Brucella is the ability to survive and multiply within both phagocytic and non-phagocytic cells...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015452/bacteriological-clinical-and-virulence-aspects-of-aeromonas-associated-diseases-in-humans
#14
Uttara Dey Bhowmick, Soumen Bhattacharjee
Aeromonads have been isolated from varied environmental sources such as polluted and drinking water, as well as from tissues and body fluids of cold and warm-blooded animals. A phenotypically and genotypically heterogenous bacteria, aeromonads can be successfully identified by ribotyping and/or by analysing gyrB gene sequence, apart from classical biochemical characterization. Aeromonads are known to cause scepticemia in aquatic organisms, gastroenteritis and extraintestinal diseases such as scepticemia, skin, eye, wound and respiratory tract infections in humans...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015451/non-antibiotics-efflux-pumps-and-drug-resistance-of-gram-negative-rods
#15
Agnieszka Ewa Laudy
Non-antibiotic medicinal products consist of drugs with diverse activity against bacteria. Many non-antibiotics demonstrate direct anti-bacterial activity against Gram-positive cocci. The activity observed against Gram-negative rods is much lower and non-antibiotics primarily from the following groups: non-steroidal anti-inflammatory drugs, cardiovascular and antidepressant medicinal products demonstrate this activity. It has been shown that the low activity of some non-antibiotics or the absence of activity against Gram-negative rods is related, among other things, to the extrusion of these compounds from bacterial cells by multi-drug resistance efflux pumps...
June 30, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015434/the-prevalence-of-campylobacter-spp-in-polish-poultry-meat
#16
Anna Szosland-Fałtyn, Beata Bartodziejska, Joanna Królasik, Beata Paziak-Domańska, Dorota Korsak, Magdalena Chmiela
The prevalence, count and molecular identification of Campylobacter spp. in Polish poultry meat were analysed. 181 samples of meat from chicken (70), turkey (47), duck (54) and goose (10) were studied. Campylobacter spp. was found in 64% of meat samples. The highest prevalence of this pathogen was detected for duck meat. On average 80% of duck samples were contaminated with Campylobacter spp. The counts of Campylobacter spp. in positive samples remained under ten colony forming units per gram of product in 59% of poultry meat...
March 9, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015433/comparative-seroprevalence-of-hepatitis-a-and-e-viruses-in-blood-donors-from-wielkopolska-region-west-central-poland
#17
Maciej Bura, Małgorzata Łagiedo-Żelazowska, Michał Michalak, Jan Sikora, Iwona Mozer-Lisewska
The objective of the present study was to investigate the seroprevalence of HAV and HEV in Polish blood donors (BDs). One hundred and ten randomly selected healthy BDs, living in Wielkopolska Region were tested for anti-HAV IgG and anti-HEV IgG with commercial assays. The seroprevalence of anti-HAV was 11.8%; anti-HEV were detected in 60.9% of BDs (p < 0.0001). Consumption of risky food was more common in anti-HEV-positive BDs (59.1% vs. 33.3%; p = 0.01). Twelve out of 20 BDs (60%) with no history of travel abroad were exposed to HEV...
March 9, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015432/changes-of-microbial-diversity-during-swine-manure-treatment-process
#18
Minseok Kim, Jung-Im Yun, Seung-Gun Won, Kyu-Hyun Park
We investigated microbial diversity in a manure storage tank (MST) storing untreated manure and an aeration tank (AT) during swine manure treatment process using the next-generation sequencing in order to find the aeration effect on microbial diversity. Proteobacteria were more abundant in the AT group than in the MST group and may include denitrifying bacteria contributing to nitrous oxide (N2O) emission or aerobic bacteria stimulated by oxygen. The opposite held true for the phyla Bacteroidetes and Firmicutes that may include anaerobic bacteria inhibited under aerobic conditions in the AT group...
March 9, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015431/rapid-detection-of-bloodstream-pathogens-in-oncologic-patients-with-a-filmarray-multiplex-pcr-assay-a-comparison-with-culture-methods
#19
Maria Szymankiewicz, Beata Nakonowska
The results of the FilmArray® Blood Culture Identification Panel (BCID) (BioFire Diagnostics) and the culture with susceptibility testing of 70 positive blood cultures from oncologic patients were compared. The multiplex PCR assay (BCID) identified 81 of the 83 isolates (97.6%), covered by the panel. The panel produced results in significantly shorter time than standard identification methods, when counted from receiving positive blood cultures bottles to the final results. It is an accurate method for the rapid identification of pathogens and resistance genes from blood culture in oncologic patients...
March 9, 2018: Polish Journal of Microbiology
https://www.readbyqxmd.com/read/30015430/evaluation-of-the-carba-np-test-for-the-detection-of-carbapenemase-activity-in-bacteroides-species
#20
Isin Akyar, Meltem Ayas, Onur Karatuna, Yesim Besli
We evaluated the usefulness of the Carba NP test for rapid detection of carbapenemase activity in Bacteroides spp. The minimum inhibitory concentration (MIC) for imipenem was determined with gradient test strips, and cfiA gene was investigated by polymerase chain reaction for 27 clinical Bacteroides spp. isolates. Carba NP test was performed according to recommendations of the Clinical and Laboratory Standards Institute. Among three cfiA gene harboring clinical isolates, two imipenem resistant isolates were Carba NP test positive, while the imipenem intermediate isolate was negative...
March 9, 2018: Polish Journal of Microbiology
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