Genetic Determinants and Biofilm Properties Useful in Estimation of UTI Pathogenicity of the Strains Isolated from Free-Living Birds.

: According to the One Health concept, wild birds can be indicators of ecosystem pollution and disease incidence. strains are widespread worldwide, but there are still few reports on the association of human infections with a potential reservoir of highly pathogenic human strains in wild birds. Fecal with uropathogenic potential (UPEC) can be transmitted between birds and humans and may be a risk factor for urinary tract infections (UTIs).

Biodiversity of microorganisms in the Baltic Sea: the power of novel methods in the identification of marine microbes.

Until recently, the data on the diversity of the entire microbial community from the Baltic Sea were relatively rare and very scarce. However, modern molecular methods have provided new insights into this field with interesting results. They can be summarized as follows.

High Prevalence of Plasmid-Mediated Quinolone Resistance among ESBL/AmpC-Producing Enterobacterales from Free-Living Birds in Poland.

In this study, we investigated the occurrence of plasmid-mediated quinolone resistance (PMQR) in extended-spectrum β-lactamase- (ESBL) and/or AmpC-type β-lactamase-producing isolates from free-living birds in Poland. The prevalence of the gene was 63%, and the distribution of isolates in terms of bacterial species was as follows: 67% (22/33) corresponded to , 83% (5/6) to , 44% (4/9) to and 33% (1/3) to . The gene was also found in a single isolate of .

A Novel Cryptic Clostridial Peptide That Kills Bacteria by a Cell Membrane Permeabilization Mechanism.

This work reports detailed characteristics of the antimicrobial peptide Intestinalin (P30), which is derived from the LysC enzyme of Clostridium intestinale strain URNW. The peptide shows a broader antibacterial spectrum than the parental enzyme, showing potent antimicrobial activity against clinical strains of Gram-positive staphylococci and Gram-negative pathogens and causing between 3.04 ± 0.

Difficulties in the Modeling of Spreading from Various Sources in a Coastal Marine Area.

Coastal and transitional waters are often used as bathing waters. In many regions, such activities play an important economic role. According to the European Union Bathing Water Directive (2006/7/EC) (BWD) the concentration of in bathing water exceeding 500 CFU·100 mL poses a high risk for bathers' health.

Raw Meat Contaminated with Cephalosporin-Resistant as a Potential Source of Human Home Exposure to Multidrug-Resistant Bacteria.

The prevalence of cephalosporine-resistant (3GC-R) strains among United States community-related research samples ranged from 5.6 to 10.8%, while, in the European countries, it was 1.

Escherichia coli and Serratia fonticola ESBLs as a potential source of antibiotics resistance dissemination in the Tricity water reservoirs.

Despite the fact that cephalosporins are rarely used in medical or veterinary treatment, the presence of Enterobacterales strains resistant to this group of anti-bacterial drugs (ESBL) is an important issue that requires attention. Between 2019 and 2021, 14 retention reservoirs, 12 streams, 3 rivers and 1 lake situated in the Tricity area (in northern Poland) were sampled for the presence of ESBL strains. Out of 40 water samples, characteristic growth (E.

Multiresistant strains are as susceptible to photodynamic inactivation as their naïve counterparts: protoporphyrin IX-mediated photoinactivation reveals differences between methicillin-resistant and methicillin-sensitive Staphylococcus aureus strains.

Objective: The current study was aimed at the investigation of differences in response to photoinactivation between methicillin-resistant Staphylococcus aureus (MRSA) and methicillin-sensitive S. aureus (MSSA) isolates. Moreover, we aimed to elucidate if the observed variation resulted from antimicrobial resistance mechanisms and strains' susceptibility to antibiotic therapy.

Mucormycosis complicating lower limb crash injury in a multiple traumatised patient: an unusual case.

Necrotising skin and soft tissues infections are most commonly bacterial in origin. However, saprophytic fungi of the class Zygomycetes, family Mucoraceae, can cause highly aggressive infections (mucormycoses) mainly in immunocompromised patients. Severe trauma is one of the major risk factors for mucormycosis.

[Study on genetic diversity of genes encoding main adhesins among nontypeable Haemophilus influenzae strains isolated from children in Poland].

The study was based on hypothesis that in the nontypeable population of H. influenzae strains isolated from children there are some genetically predisposed to induce symptomatic infection in children and that they might be divided into different groups depending on profiles of genes encoding main adhesins synthesis. The work aimed at analysis of distribution of genes encoding adhesins and evaluation of domination possibility of some strains representing particular adhesins genes profiles among NTHi population.

[Nosocomial bacteremia].

Nosocomial bacteremia according to different authors can be divided in to bacteremia persistent, polymicrobial bacteremia, alternate bacteremia, breakthrough bacteremia, different bacteremia. Developing techniques of microbiological and molecular diagnostics induce us to verify the definition and partition of term "bacteremia".

[Microorganisms analysis in Public Clinical Hospital in Gdańsk over three years 2001-2003].

The aim of the study was to analyse the changes in occurence of microorganisms and antibiotic usage in tertiary care hospital over 3 years. We analysed the results of microbiological records from laboratory inforation systems from 2001 to 2003. Over the study period there was about 40% increase of specimens received in the laboratory mainly due to another hospital incorporation.

Formation of silver nanoparticles at the air-water interface mediated by a monolayer of functionalized hyperbranched molecules.

Nanofibrillar micellar structures formed by the amphiphilic hyperbranched molecules within a Langmuir monolayer were utilized as matter for silver nanoparticle formation from the ion-containing water subphase. We observed that silver nanoparticles were formed within the multifunctional amphiphilic hyperbranched molecules. The diameter of nanoparticles varied from 2-4 nm and was controlled by the core dimensions and the interfibrillar free surface area.

Assembling of amphiphilic highly branched molecules in supramolecular nanofibers.

We found that the amplification of weak multiple interactions between numerous peripheral branches of irregular, flexible, polydisperse, and highly branched molecules can facilitate their self-assembly into nanofibrillar micellar structures at solid surfaces and the formation of perfect long microfibers in the course of crystallization from solution. The core-shell architecture of the amphiphilic dendritic molecules provides exceptional stability of one-dimensional nanofibrillar structures. The critical condition for the formation of the nanofibrillar structures is the presence of both alkyl tails in the outer shell and amine groups in the core/inner shell.

Molecular epidemiology of Serratia marcescens in two hospitals in Gdańsk, Poland, over a 5-year period.

The history of the Serratia marcescens population in two hospitals in Danzig, Poland, over a 5-year period was analyzed in a study that combined MIC evaluation, typing by randomly amplified polymorphic DNA (RAPD) analysis and pulsed-field gel electrophoresis, and analysis of extended-spectrum beta-lactamases (ESBLs). We analyzed 354 isolates collected from 341 patients in two teaching hospitals in Danzig, Poland, from 1996 to 2000. The antimicrobial susceptibility profiles varied greatly, and for resistance to newer beta-lactams, probable AmpC cephalosporinase derepression and ESBL production occurred in about 23 and 19% of the isolates, respectively.

[Microorganisms isolated from clinical specimens of patients from the Department of Thoracic Surgery].

The clinical specimens received from patients hospitalized in Department of Thoracic Surgery between 1997 and 2001 were microbiologically examined. The main specimen for microbiological examination was pleural fluid (median 34%). The frequency of specimens from bronchial tree increased significantly (from 4% to 26%) with concurrent decrease of sputum (from 29% to 6%).

Gastric sarcoidosis.

Sarcoidosis of the gastrointestinal tract is uncommon even though involvement of the liver, spleen, and adenopathy are becoming recognizable entities on computed tomography (CT). Involvement of the stomach, the most common site of sarcoidosis of the gastrointestinal tract, is usually associated with pulmonary disease. The radiologic appearances of gastric involvement are variable.

Allergic investigations in children with atopic eczema.

In the study the results of allergic investigations in 36 children with atopic eczema were demonstrated. Prick testing with 22 allergens made by Bencard and 5 natural allergens showed an allergic reaction in 28 children (77.8%).

A case of adenocarcinoma of the lung associated with a neck mass and hypercalcemia.

The case of hypercalcemia secondary to metastasis to a benign parathyroid adenoma is reported. The patient had documented lung adenocarcinoma with multiple bone metastases and a mass in the lower anterior neck for at least 5 months before hypercalcemia and hypophosphatemia resistant to treatment developed. Autopsy revealed widespread metastatic disease including metastatic tumor invading a benign parathyroid adenoma.

Kaposi's sarcoma. CT-radiographic correlation.

The role of CT in the diagnosis of intrathoracic Kaposi's sarcoma (KS) was evaluated retrospectively in 24 patients, in the absence of coexistent opportunistic infections. In all cases the diagnosis of KS was initially established by histologic evaluation of extrathoracic disease: 15 patients had verified parenchymal KS and nine patients endobronchial KS. (Chest roentgenograms were analyzed separately for each group: in 14 patients serial films were available for review.

Acute pancreatitis in a patient treated for alcoholic hepatitis. The hypothesis of supranormal ecbolic stimulation of the pancreon.

A 33-yr-old white woman treated for alcoholic hepatitis developed acute pancreatitis during her hospital stay. At autopsy, two major pathological processes were found: alcoholic cirrhosis and chronic pancreatitis. In both, there was evidence of an acute episode, i.