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Polish Journal of Microbiology

Polish Society of Microbiologists

Subject: Microbiology

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ISSN: 1733-1331
eISSN: 2544-4646

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FEATURED ARTICLES

Comparison of PCR, Fluorescent in Situ Hybridization and Blood Cultures for Detection of Bacteremia in Children and Adolescents During Antibiotic Therapy
Epilithic Biofilms in Lake Baikal: Screening and Diversity of PKS and NRPS Genes in the Genomes of Heterotrophic Bacteria
Functional and Transcriptomic Characterization of a Dye-decolorizing Fungus from Taxus Rhizosphere

VOLUME 67 , ISSUE 4 (December 2018) - List of articles

Emergence of High-level Gentamicin Resistance among Enterococci Clinical Isolates from Burn Patients in South-west of Iran: Vancomycin Still Working

MARYAM LABIBZADEH/ GHOLAM ABBAS KAYDANI/ MOHAMMAD SAVARI/ ALIREZA EKRAMI

Enterococcus faecalis and Enterococcus faecium are among the main agents associated with nosocomial infections with high mortality in immunocompromised patients. Antibiotic resistance, especially against gentamicin and vancomycin among Enterococci, is a risk factor that could increase the morbidity and mortality rate. 179 Enterococci isolates from burn patients were included in this study. Antibiotic susceptibility testing was done using the disk diffusion test and minimum inhibitory concentrati(..)

DOI: 10.21307/pjm-2018-043

Published Online: 10-December-2018

Aspergillus penicillioides Speg. Implicated in Keratomycosis

EULALIA MACHOWICZ-MATEJKO/ AGNIESZKA FURMAŃCZYK/ EWA DOROTA ZALEWSKA

Abstract The aim of the study was mycological examination of ulcerated corneal tissues from an ophthalmic patient. Tissue fragments were analyzed on potato-glucose agar (PDA) and maltose (MA) (Difco) media using standard laboratory techniques. Cultures were identified using classical and molecular methods. Macro- and microscopic colony morphology was characteristic of fungi from the genus Aspergillus (restricted growth series), most probably Aspergillus penicillioides Speg. Molecular analysis of(..)

DOI: 10.21307/pjm-2018-049

Published Online: 10-December-2018

Functional and Transcriptomic Characterization of a Dye-decolorizing Fungus from Taxus Rhizosphere

DA CHENG HAO/ SI MENG SONG/ YAN CHENG/ ZHI QIANG QIN/ GUANG BO GE/ BAI LIN AN/ PEI GEN XIAO

Abstract We isolated three laccase-producing fungus strains from Taxus rhizosphere. Myrotheium verrucaria strain DJTU-sh7 had the highest laccase activity of 216.2 U/ml, which was increased to above 300 U/ml after optimization. DJTU-sh7 had the best decolorizing effect for three classes of reactive dyes. The DJTU-sh7-containing fungal consortium displayed the robust decolorizing ability. Both color removal efficiency and chemical oxygen demand were increased in the consortium mediated biotransfo(..)

DOI: 10.21307/pjm-2018-050

Published Online: 10-December-2018

A Novel Approach to Study the Effect of Ciprofloxacin on Biofilms of Corynebacterium spp. Using Confocal Laser Scanning Microscopy

ALINA OLENDER/ AGNIESZKA BOGUT/ AGNIESZKA MAGRYŚ/ KATARZYNA KRÓL-TURMIŃSKA

Abstract Non-diphtherial corynebacteria are Gram-positive rods that cause opportunistic infections, what is supported by their ability to produce biofilm on artificial surfaces. In this study, the characteristic of the biofilm produced on vascular and urological catheters was determined using a confocal microscopy for the most frequently involved in infections diphtheroid species. They were represented by the reference strains of Corynebacterium striatum ATCC 6940 and C. amycolatum ATCC 700207. (..)

DOI: 10.21307/pjm-2018-051

Published Online: 10-December-2018

Culturable Endophytes Diversity Isolated from Paeonia ostii and the Genetic Basis for Their Bioactivity

RUI-XIAN YANG/ SHAO-WEN ZHANG/ DONG XUE/ JUN-HAO XUAN/ YUAN-BO ZHANG/ BIAO-BIAO PENG

Abstract Paeonia ostii is known for its excellent medicinal values as Chinese traditional plant. To date, the diversity of culturable endophytes associated with P. ostii is in its initial phase of exploration. In this study, 56 endophytic bacteria and 51 endophytic fungi were isolated from P. ostii roots in China. Subsequent characterization of 56 bacterial strains by 16S rDNA gene sequence analysis revealed that nine families and 13 different genera were represented. All the fungal strains were(..)

DOI: 10.21307/pjm-2018-052

Published Online: 10-December-2018

Comparison of the Photosensitivity of Biofilms of Different Genera of Cariogenic Bacteria in Tooth Slices

HOMA DARMANI/ KHITAM H. TAWALBEH/ AHMAD S. AL-HIYASAT/ MOHAMMAD-ALI AL-AKHRAS

Abstract This study compared the outcome of photosensitization on the viability of four different cariogens in planktonic form as well as biofilms in human dentine. Photodynamic therapy was carried out with a gallium aluminium arsenide laser (670 nm wavelength) using Toluidine blue O (TBO) as the photosensitizer. Cariogenic bacteria (Streptococcus mutans, Lactobacillus casei, Streptococcus salivarius and Actinomyces viscosus) were exposed to TBO and then to the laser for 1 minute in planktonic s(..)

DOI: 10.21307/pjm-2018-053

Published Online: 10-December-2018

Emodin Reduces the Activity of (1,3)-β-D-glucan Synthase from Candida albicans and Does Not Interact with Caspofungin

MONIKA JANECZKO

Abstract Candidiasis is the most common opportunistic yeast infection, with Candida albicans as a paramount causative species. (1,3)-β-D-glucan is one of the three main targets of clinically available antifungal agents used to treat Candida infections. It is one of the most abundant fungal cell wall components. Echinocandins represent the newest class of antifungals affecting cell wall biosynthesis through non-competitive inhibition of (1,3)-β-D-glucan synthase. Therefore, treatment with echinoc(..)

DOI: 10.21307/pjm-2018-054

Published Online: 10-December-2018

Primary and Secondary Bacteremia Caused by Proteus spp.: Epidemiology, Strains Susceptibility and Biofilm Formation

JOANNA KWIECIŃSKA-PIRÓG/ KRZYSZTOF SKOWRON/ EUGENIA GOSPODAREK-KOMKOWSKA

Abstract Proteus spp. is an etiological factor of urinary tract and bloodstream infections. The aim of this study was the retrospective analysis of susceptibility of Proteus spp. strains isolated from bloodstream infections (BSIs) as well as similarity evaluation of the strains isolated from different clinical samples. Proteus spp. strains were isolated in 2009–2017 from hospital patients. Identification was based on the colony’s morphology and biochemical or MALDI-TOF MS analyzes. The antibioti(..)

DOI: 10.21307/pjm-2018-055

Published Online: 10-December-2018

Comparison of PCR, Fluorescent in Situ Hybridization and Blood Cultures for Detection of Bacteremia in Children and Adolescents During Antibiotic Therapy

TOMASZ W. ŹRÓDŁOWSKI/ DANUTA JURKIEWICZ-BADACZ/ AGNIESZKA SROKA-OLEKSIAK/ DOMINIKA SALAMON/ MAŁGORZATA BULANDA/ TOMASZ GOSIEWSKI

Abstract The gold standard in microbiological diagnostics of bacteremia is a blood culture in automated systems. This method may take several days and has low sensitivity. New screening methods that could quickly reveal the presence of bacteria would be extremely useful. The objective of this study was to estimate the effectiveness of these methods with respect to blood cultures in the context of antibiotic therapy. Blood samples from 92 children with sepsis were analyzed. Blood cultures were ca(..)

DOI: 10.21307/pjm-2018-056

Published Online: 10-December-2018

Drug Susceptibility of Non-tuberculous Strains of Mycobacterium Isolated from Birds from Poland

ALEKSANDRA LEDWOŃ/ AGNIESZKA NAPIÓRKOWSKA/ EWA AUGUSTYNOWICZ- KOPEĆ/ PIOTR SZELESZCZUK

Abstract Mycobacterioses are a constant problem in backyard poultry, as well as pet birds. To date, no evidence of direct transmission of atypical bacilli between humans has been demonstrated, but it cannot be ruled out that sick animals can be a source of infection for people in their environment. The aim of the study was to identify mycobacteria isolated from birds with diagnosed mycobacteriosis and to determine the susceptibility of mycobacterial isolates from these animals to antituberculous(..)

DOI: 10.21307/pjm-2018-057

Published Online: 10-December-2018

Evaluation of Neisseria meningitidis Carriage with the Analysis of Serogroups, Genogroups and Clonal Complexes among Polish Soldiers

KRZYSZTOF KORZENIEWSKI/ MONIKA KONIOR

Abstract Neisseria meningitidis is an etiological factor of invasive meningococcal disease (IMD). This Gram-negative diplococcus is transmitted from person to person via droplets or through a direct physical contact with secretions of infected patients or asymptomatic carriers. The latter account for 5–10% of the general population. The aim of the study was to estimate the actual N. meningitidis carriage rate in the military environment with identification of serogroups, genogroups, sequence typ(..)

DOI: 10.21307/pjm-2018-058

Published Online: 10-December-2018

Epilithic Biofilms in Lake Baikal: Screening and Diversity of PKS and NRPS Genes in the Genomes of Heterotrophic Bacteria

ELENA SUKHANOVA/ EKATERINA ZIMENS/ OKSANA KALUZHNAYA/ VALENTINA PARFENOVA/ OLGA BELYKH

Abstract A collection of heterotrophic bacteria consisting of 167 strains was obtained from microbial communities of biofilms formed on solid substrates in the littoral zone of Lake Baikal. Based on the analysis of 16S rRNA gene fragments, the isolates were classified to four phyla: Proteobacteria, Firmicutes, Actinobacteria, and Bacteroidetes. To assess their biotechnological potential, bacteria were screened for the presence of PKS (polyketide synthase) and NRPS (non-ribosomal peptide syntheta(..)

DOI: 10.21307/pjm-2018-060

Published Online: 10-December-2018

Microbiology and Drug Resistance of Pathogens in Patients Hospitalized at the Nephrology Department in the South of Poland

MIKOŁAJ MICHNO/ ANTONI SYDOR/ MARTA WAŁASZEK/ WŁADYSŁAW SUŁOWICZ

Abstract A retrospective study was conducted among 498 patients with urinary tract infections (UTI) referred to our department from January 2013 to December 2015. This study was performed to evaluate the etiology of UTI and the antibiotic susceptibility profile of Escherichia coli (E. coli) as the main etiological factor in different age groups. Urine samples were examined using standard microbiological methods. Three hundred sixty-three samples (72.9%) were identified as E. coli, of which 29 (8(..)

DOI: 10.21307/pjm-2018-061

Published Online: 10-December-2018

A Special Risk Group for Hepatitis E Infection: The First Record of North Cyprus

KAYA SÜER/ MERYEM GÜVENIR/ ASLI AYKAÇ

Abstract Hepatitis E virus (HEV) is transmitted by a fecal oral route from animals to humans following exposure to the body fluids of infected animals. We investigated the seroprevalence of anti-hepatitis E (anti-HEV) antibodies by monitoring IgG and IgM virus antibodies amongst employees in the animal industry in North Cyprus through a cross-sectional study. Samples were taken from individuals without occupational exposure to animals and from those who worked with animals (doing animal husbandr(..)

DOI: 10.21307/pjm-2018-062

Published Online: 10-December-2018

Detection of Coxiella burnetii and Francisella tularensis in Tissues of Wild-living Animals and in Ticks of North-west Poland

AGATA BIELAWSKA-DRÓZD/ PIOTR CIEŚLIK/ DOROTA ŻAKOWSKA/ PATRYCJA GŁOWACKA/ BOŻENA WLIZŁO-SKOWRONEK/ PRZEMYSŁAW ZIĘBA/ ARKADIUSZ ZDUN

Abstract This work presents results of the research on the occurrence of Coxiella burnetii and Francisella tularensis in the tissues of wild-living animals and ticks collected from Drawsko County, West Pomeranian Voivodeship. The real-time PCR testing for the pathogens comprised 928 samples of animal internal organs and 1551 ticks. The presence of C. burnetii was detected in 3% of wild-living animals and in 0.45–3.45% (dependent on collection areas) of ticks. The genetic sequences of F. tularens(..)

DOI: 10.21307/pjm-2018-059

Published Online: 10-December-2018

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