Search

  • Select Article Type
  • Abstract Supplements
  • Blood Group Review
  • Call to Arms
  • Hypothesis
  • In Memoriam
  • Interview
  • Introduction
  • Short Report
  • abstract
  • Abstracts
  • Article
  • book-review
  • case-report
  • case-study
  • Clinical Practice
  • Commentary
  • Conference Presentation
  • conference-report
  • congress-report
  • Correction
  • Editorial
  • Editorial Comment
  • Erratum
  • Events
  • Letter
  • Letter to Editor
  • mini-review
  • minireview
  • News
  • Obituary
  • original-paper
  • Original Research
  • Pictorial Review
  • Position Paper
  • Practice Report
  • Preface
  • Preliminary report
  • Product Review
  • rapid-communication
  • Report
  • research-article
  • Research Communicate
  • research-paper
  • Research Report
  • Review
  • review -article
  • review-article
  • Review Paper
  • Sampling Methods
  • Scientific Commentary
  • short-communication
  • Student Essay
  • Varia
  • Welome
  • Select Journal
  • Polish Journal Of Microbiology
  • Advancements Of Microbiology

 

Mini Review

Brucella – Virulence Factors, Pathogenesis and Treatment

feature of Brucella is the ability to survive and multiply within both phagocytic and non-phagocytic cells. Brucella does not produce classical virulence factors: exotoxin, cytolisins, exoenzymes, plasmids, fimbria, and drug resistant forms. Major virulence factors are: lipopolysaccharide (LPS), T4SS secretion system and BvrR/BvrS system, which allow interaction with host cell surface, formation of an early, late BCV (Brucella Containing Vacuole) and interaction with endoplasmic reticulum (ER) when

PATRYCJA GŁOWACKA, DOROTA ŻAKOWSKA, KATARZYNA NAYLOR, MARCIN NIEMCEWICZ, AGATA BIELAWSKA-DRÓZD

Polish Journal of Microbiology , ISSUE 2, 151–161

Article

THE PREVALENCE OF SYMPTOMATIC DERMATOPHYTOSES IN DOGS AND CATS AND THE PATHOMECHANISM OF DERMATOPHYTE INFECTIONS

contact with soil containing arthrospores [11, 20, 78]. 3. Pathogenesis and dermatophyte virulence factors 3.1. Development of dermatophyte infection Arthrospores, which are propagules of asexual reproduction created as a result of the fermentation of a fungus’ hyphae, are believed to be an infectious form of dermatophytes [76, 77, 78]. Two routes of transmission have been described in the literature for arthrospores: the direct and the indirect one [42]. The former refers to the direct contact of

Dominik Łagowski, Sebastian Gnat, Aneta Nowakiewicz, Marcelina Osińska, Przemysław Zięba

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 2, 165–176

Research Article

FRANCISELLA TULARENSIS – A DECEITFUL PATHOGEN

Francisella tularensis is an intracellular bacterial pathogen which causes a potentially lethal disease named tularemia. Some studies have been conducted to describe and identify the virulence factors of F. tularensis. This pathogen is able to infect a variety of cells of various hosts, including wild animals, especially rabbits, hares and rodents, and humans. This may suggest that genes of F. tularensis must adapt to many different intraorganismal environments. Still, little is known about the

Kamila Formińska, Aleksandra Anna Zasada

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 2, 187–195

Research Article

SECRETION OF OUTER MEMBRANE VESICLES AS A MECHANISM PROMOTING H. PYLORI INFECTIONS

during stressful conditions, among others. H. pylori OMV mediate transfer of virulence factors such as toxins and immunomodulatory compounds. They contribute to avoiding a response from the host immune system and inducing chronic gastritis. OMV secretion also affects the formation of cell aggregates, microcolonies and biofilm matrix. Enhanced OMV production is connected to maintenance of direct contact through cell-cell and cell-surface interactions. A key component of OMV, which determines their

Paweł Krzyżek

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 3, 316–325

original-paper

Diversity, Virulence Factors, and Antifungal Susceptibility Patterns of Pathogenic and Opportunistic Yeast Species in Rock Pigeon (Columba livia) Fecal Droppings in Western Saudi Arabia

the first time, the carriage of different genes encoding virulence factors among Cryptococcus and other yeast species found in pigeon feces in western Saudi Arabia. Experimental Materials and Methods Sampling. A total of 100 samples of dried pigeon fecal droppings were collected from various locations within the city of Makkah, western Saudi Arabia, between May and November 2018. Each fecal sample was collected in a sterile universal bottle, protected from direct sunlight and transported to the

HUSSEIN H. ABULREESH, SAMEER R. ORGANJI, KHALED ELBANNA, GAMAL E.H. OSMAN, MESHAL H.K. ALMALKI, AHMED Y. ABDEL-MALEK, ABDULLAH A.K. GHYATHUDDIN, IQBAL AHMAD

Polish Journal of Microbiology , ISSUE 4, 493–504

Original Paper

Safety Evaluation of Enterocin Producer Enterococcus sp. Strains Isolated from Traditional Turkish Cheeses

The purpose of this study was to determine the antimicrobial activity and occurrence of bacteriocin structural genes in Enterococcus spp. isolated from different cheeses and also investigate some of their virulence factors. Enterococcus strains were isolated from 33 different cheeses. Enterococcus faecium (6 strains) and Enterococcus faecalis (5 strains) enterocin-producing strains were identified by 16S rDNA analyses. Structural genes entA, entB, entP and entX were detected in some isolates

Mine Avci, Banu Özden Tuncer

Polish Journal of Microbiology , ISSUE 2, 223–233

Original Paper

Deletion of atoR from Streptococcus pyogenes Results in Hypervirulence in a Mouse Model of Sepsis and is LuxS Independent

Group A Streptococcus (GAS) is a Gram-positive human pathogen that causes a variety of diseases ranging from pharyngitis to life-threaten­ing streptococcal toxic shock syndrome. Recently, several global gene expression analyses have yielded extensive new information regarding the regulation of genes encoding known and putative virulence factors in GAS. A microarray analysis found that transcription of the GAS gene M5005_Spy_1343 was significantly increased in response to interaction with

Izabela Sitkiewicz, James M. Musser

Polish Journal of Microbiology , ISSUE 1, 17–24

original-paper

Epidemiology, Drug Resistance, and Virulence of Staphylococcus aureus Isolated from Ocular Infections in Polish Patients

immunity to ocular infections can be reduced by underlying diseases, operative procedures, the use of corticosteroids, hospitalization, and the use of medical devices (Teweldemedhin et al. 2017). One of the main SA virulence factors that contribute to ocular infections is its ability to the formation of biofilms on the surface of biomedical implants or contact lenses (Cramton et al. 1999). Through this process, the bacteria become more resistant to various physicochemical stresses, e.g. antibiotics

MARTA KŁOS, MONIKA POMORSKA-WESOŁOWSKA, DOROTA ROMANISZYN, AGNIESZKA CHMIELARCZYK, JADWIGA WÓJKOWSKA-MACH

Polish Journal of Microbiology , ISSUE 4, 541–548

Article

THE ROLE OF THE STRINGENT COMPONENTS IN THE REGULATION OF VIRULENCE

Klaudyna Krause, Klaudia Milewska, Agnieszka Szalewska-Pałasz

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 3, 247–258

Original Paper

The Prevalence of Exoenzyme S Gene in Multidrug-Sensitive and Multidrug-Resistant Pseudomonas aeruginosa Clinical Strains

Pseudomonas aeruginosa rods are one of the most commonly isolated microorganisms from clinical specimens, usually responsible for nosocomial infections. Antibiotic-resistant P. aeruginosa strains may present reduced expression of virulence factors. This fact may be caused by appropriate genome management to adapt to changing conditions of the hospital environment. Virulence factors genes maybe replaced by those crucial to survive, like antimicrobial resistance genes. The aim of this study was

Tomasz Bogiel, Aleksander Deptuła, Joanna Kwiecińska-Piróg, Małgorzata Prażyńska, Agnieszka Mikucka, Eugenia Gospodarek-Komkowska

Polish Journal of Microbiology , ISSUE 4, 427–431

Article

THE ROLE AND IMPORTANCE OF SELECTED VIRULENCE FACTORS DETERMINING THE PATHOGENICITY OF UROPATHOGENIC ESCHERICHIA COLI STRAINS

Sylwia Joanna Chmielewska, Katarzyna Leszczyńska

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 1, 25–37

Article

DIFFUSELY ADHERING ESCHERICHIA COLI

virulence factors they generate: enteropathogenic E. coli (EPEC), Shiga toxinproducing E. coli (STEC) along with the subgroup of enterohemorrhagic E. coli (EHEC), enteroinvasive E. coli (EIEC), enteroaggregative E. coli (EAEC), enterotoxigenic E. coli (ETEC), adherent-invasive E. coli (AIEC) and diffusely-adherent E. coli (DAEC). Those E. coli strains that cause extraintestinal infections (ExPEC; Extraintestinal Pathogenic Escherichia coli), comprise uropathogenic E. coli strains (UPEC; Uropathogenic

Michał Turniak, Beata Sobieszczańska

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 2, 143–152

Research Article

STRATEGIES FOR THE ANALYSIS OF THIOLOXIDORDUCTASES

details, the mechanism of the Dsb systems functioning in other bacteria are rather poorly understood. Herein, we present the current methodology, both in vivo and in vitro experimental techniques, which allow us to understand the functioning of the Dsb proteins and has broaden our knowledge in the field of biochemistry and microbiology of this posttranslational protein modification. Many bacterial virulence factors are extracytoplasmic Dsb-dependent proteins. Thus, this system plays an important role

Elżbieta Katarzyna Jagusztyn-Krynicka, Anna Marta Banaś, Magdalena Joanna Grzeszczuk

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 3, 326–334

Original Paper

Prevalence of Biofilm Formation and Wide Distribution of Virulence Associated Genes among Vibrio spp. Strains Isolated from the Monastir Lagoon, Tunisia

species were the most adhesive strains to both biotic and abiotic surfaces. Besides, V. alginolyticus isolates has the high levels of recombination of genes encoding V. cholerae and V. parahaemolyticus virulence factors. In vitro cytotoxic activities of several Vibrio extracellular product were also observed among HeLa and Vero cells.

Badreddine Mechri, Amel Medhioub, Mohamed Nejib Medhioub, Mahjoub Aouni

Polish Journal of Microbiology , ISSUE 3, 307–318

original-paper

Campylobacter fetus is Internalized by Bovine Endometrial Epithelial Cells

has been studied regarding its pathogenicity mechanisms. However, considering the pathogenesis of infection by this organism, it must possess characteristics that allow it to colonize or invade tissues and evade the immune system response. Several virulence factors, such as adhesins, secretion systems, and anti-phagocytic layers, have been identified in the genome of C. fetus (Kienesberger et al. 2014). Nonetheless, it is still necessary to investigate C. fetus interactions with animal hosts. When

LIZETH GUADALUPE CAMPOS-MÚZQUIZ, ESTELA TERESITA MÉNDEZ-OLVERA, BEATRIZ ARELLANO-REYNOSO, DANIEL MARTÍNEZ-GÓMEZ

Polish Journal of Microbiology , ISSUE 2, 217–224

Research Article

THE ROLE OF STAPHYLOCOCCUS AUREUS IN THE CLINICAL DIAGNOSIS OF DIABETIC PATIENTS

diabetes mellitus type 2 (DM2). However, the colonization by S. aureus is a probable risk factor for infection. Among S. aureus virulence factors, superantigens (SAgs) are essential for pathogenicity. The long-term effect of the superantigen toxic shock syndrome toxin-1 (TSST-1) might be glucose intolerance. This toxin also induces systemic inflammation as a result of the increased exotoxin concentration in blood, and, therefore, may be the causative factor of diabetes. Chronic exposure to

Renata Barbara Klekotka, Elżbieta Mizgała-Izworska, Witold Drzastwa2, Bogdan Mazur

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 2, 166–178

Original Paper

Molecular Characterization of Shiga Toxin-Producing Escherichia coli Strains Isolated in Poland

, stx2g. Among STEC O157 strains we observed conserved core set of 14 virulence factors, stable in bacteria genome at long intervals of time. There was one cattle STEC isolate which possessed verotoxin gene as well as sta1 gene encoded heat-stable enterotoxin STIa characteristic for enterotoxigenic E. coli. To the best of our knowledge, this is the first comprehensive analysis of virulence gene profiles identified in STEC strains isolated from human, cattle and food in Poland. The results obtained

Aleksandra Januszkiewicz, Waldemar Rastawicki

Polish Journal of Microbiology , ISSUE 3, 261–269

Article

NEW SPECIES OF BACTERIA IN HUMAN INFECTIONS

colonies do not induce haemolysis, produce β-glucuronidase and do not ferment sucrose and trehalose. Strains with smooth colonies are more likely to cause skin infections, while the rough ones, in most cases of infections, are isolated from the material originating from the respiratory tract [46, 57]. Little is known about the virulence factors of these bacteria. A. haemolyticum produces phospholipase D and neuraminidase. Phospholipase D breaks down sphingomyelin by causing necrosis of the skin and

Alicja Sękowska, Eugenia Gospodarek-Komkowska

Postępy Mikrobiologii - Advancements of Microbiology , ISSUE 1, 29–34

Original Paper

Relationship between ureB Sequence Diversity, Urease Activity and Genotypic Variations of Different Helicobacter pylori Strains in Patients with Gastric Disorders

amino acid change in UreB sequence (Ala201Thr, 30%), showed no influence on urease activity. In conclusion, the supposed role of H. pylori urease to form peptic ulcer and advancing of intestinal metaplasia was postulated in this study. Higher urease activity in the colonizing H. pylori strains that present specific virulence factors was indicated as a risk factor for promotion of histopathological changes of gastric tissue that advance gastric malignancy.

Hossein Ghalehnoei, Alireza Ahmadzadeh, Nastaran Farzi, Masoud Alebouyeh, Hamid Asadzadeh Aghdaei, Pedram Azimzadeh, Mahsa Molaei, Mohammad Reza Zali

Polish Journal of Microbiology , ISSUE 2, 153–159

No Record Found..
Page Actions