Stefan Tyski

ORCID: 0000-0003-3352-038X
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About
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Research Areas
  • Antibiotics Pharmacokinetics and Efficacy
  • Antimicrobial Resistance in Staphylococcus
  • Antibiotic Resistance in Bacteria
  • Bacterial biofilms and quorum sensing
  • Microfluidic and Capillary Electrophoresis Applications
  • Pneumonia and Respiratory Infections
  • Bacterial Infections and Vaccines
  • Bacterial Identification and Susceptibility Testing
  • Medical Device Sterilization and Disinfection
  • Probiotics and Fermented Foods
  • Antimicrobial agents and applications
  • Phenothiazines and Benzothiazines Synthesis and Activities
  • Historical Medical Research and Treatments
  • Antifungal resistance and susceptibility
  • Synthesis and biological activity
  • Pharmaceutical and Antibiotic Environmental Impacts
  • Innovative Microfluidic and Catalytic Techniques Innovation
  • X-ray Diffraction in Crystallography
  • Crystallization and Solubility Studies
  • Infective Endocarditis Diagnosis and Management
  • Gut microbiota and health
  • Infections and bacterial resistance
  • Chemical Reactions and Isotopes
  • Analytical Chemistry and Chromatography
  • Synthesis and Biological Evaluation

Narodowy Instytut Leków
2015-2024

Medical University of Warsaw
2013-2022

Antibiotic (Bulgaria)
2017

Warsaw University of Technology
2013

National Institute of Public Health
1988-2006

Instytut Farmaceutyczny
1998-2002

Hershey (United States)
1996

Institutul Cantacuzino
1996

Cancer Institute (WIA)
1996

Czech Academy of Sciences, Institute of Microbiology
1996

Knowledge of the prevalence ESBL enzymes among P. aeruginosa strains compared to Enterobacteraiceae family is limited. The phenotypic tests recommended by EUCAST for detection ESBL-producing Enterobacteriaceae are not always suited strains. This mainly due presence other families ESBLs in isolates more often than Enterobacteriaceae, production natural AmpC cephalosporinase and its overexpression, co-production metallo-β-lactamases. aim this study was determine occurrence isolated from...

10.1371/journal.pone.0180121 article EN cc-by PLoS ONE 2017-06-28

The adhesion and aggregation are characteristic attributes of probiotic strains belonging to Lactobacillaceae genus. Due these properties the host organisms can avoid colonisation intestinal tract by enteropathogenic bacteria. presented research includes a comparison various different species isolated from sources aim this study was investigate ability Lactocaseibacillus rhamnosus, Lactiplantibacillus plantarum, Lactobacillus (L. acidophilus, L. gasseri, ultunensis) products clinical...

10.1007/s00203-022-02889-8 article EN cc-by Archives of Microbiology 2022-04-27

The addition of an antibacterial agent to dental implants may provide the opportunity decrease percentage implant failures due peri-implantitis. For this purpose, in study, potential efficacy nanosilver-doped titanium biomaterials was determined. Titanium disks were incorporated with silver nanoparticles over different time periods by Tollens reaction, which is considered be eco-friendly, cheap, and easy-to-perform method. surface roughness, wettability, release profile each disc measured....

10.2147/ijn.s131163 article EN cc-by-nc International Journal of Nanomedicine 2017-06-01

Background Most patients with bacterial infections suffer from fever and various pains that require complex treatments antibiotics, antipyretics, analgaesics. The most common drugs used to relieve these symptoms are non-steroidal anti-inflammatory (NSAIDs), which not typically considered antibiotics. Here, we investigate the effects of NSAIDs on susceptibility antibiotics modulation efflux pumps. Methodology activity 12 NSAID active substances, paracetamol (acetaminophen), eight relevant...

10.1371/journal.pone.0147131 article EN cc-by PLoS ONE 2016-01-15

The known bactericidal properties of ozone have not been checked in relation to its action on bacterial biofilms. This is especially true ozonated fluids. aim this study was investigate the activity water and that a mixture oxygen against biofilms.Eighteen clinical strains Staphylococcus aureus Pseudomonas aeruginosa exhibiting various levels antibiotic sensitivity were investigated. Bacteria cultured biofilm form polystyrene titration plates for periods 2 72 hours. biofilms formed way...

10.12659/msm.882044 article EN Medical Science Monitor 2011-01-01

With use of standardized techniques, a study nasopharyngeal pneumococcal carriage in children six Central and Eastern European cities was undertaken during the winter 1993–1994. Nasopharyngeal swab specimens were collected from 954 (predominantly under age 5 years) who hospitalized or attending outpatient clinics day-care centers. Susceptibility isolates determined by disk diffusion (on Mueller-Hinton agar with 5% sheep blood). Disks containing 1 µg oxacillin used to screen for...

10.1093/clinids/23.4.712 article EN Clinical Infectious Diseases 1996-10-01

10.1016/0167-4838(83)90241-8 article EN Biochimica et Biophysica Acta (BBA) - Proteins and Proteomics 1983-12-01

A variety of pharmaceutical preparations, which are applied in the management non-infectious diseases, have shown vitro some antimicrobial activity. These drugs called "non-antibiotics". The aim this study was to detect and characterize activity non-antibiotic drugs, selected from preparations analysed during state control performed National Institute Public Health Poland. Over 180 were randomly chosen different groups drugs. surveillance on standard ATCC microbial strains used for drug...

10.7287/peerj.preprints.1807v1 article EN 2016-03-01

The aim of this study was to perform the microbiological analysis quality 25 probiotic products, available on Polish market. Analysis bacterial viability in products showed that not all these preparations possess a suitable number bacteria. Moreover, some tested contained strains other than those declared by manufacturer. All recovered from were found be resistant metronidazole and susceptible nitrofurantoin. susceptibility antibiotics strain specific. Probiotic should subject regular...

10.5604/17331331.1197281 article EN cc-by-nc-nd Polish Journal of Microbiology 2016-01-01

The aims of this study were to investigate new nano-formulations based on ZnO and Ag nanoparticle (NP) compounds when used against clinical strains oral gram-positive gram-negative bacteria, examine the stability behaviour nano-formulation mixtures in saliva different compositions NPs, NPs ZnO+x·Ag NPs. Methods: with without nanosilver obtained by microwave solvothermal synthesis. Then, antibacterial activity was evaluated bacteria isolated from human saliva. Behavior solutions control...

10.2147/ijn.s221608 article EN cc-by-nc International Journal of Nanomedicine 2019-11-01

Background: Periimplantitis is continuously one of major threats for the uneventful functioning dental implants. Current approaches drug delivery systems are being more commonly implemented into oral- and maxillofacial biomaterials in order to decrease risk implant failure due bacterial infection. Silver nanoparticles their compounds have been proven eradicating oral bacteria responsible peri-implant infections. Nevertheless, evaluation as coating abutments has not extensively evaluated so...

10.2147/ijn.s333720 article EN cc-by-nc International Journal of Nanomedicine 2022-04-01
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