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  • Polish Journal Of Microbiology


Original Paper | 04-December-2017

Temperature, pH and Trimethoprim-Sulfamethoxazole Are Potent Inhibitors of Biofilm Formation by Stenotrophomonas maltophilia Clinical Isolates

formation, kinetics of biofilm formation for strong biofilm producers and effect of trimethoprim-sulfamethoxazole (TMP/SMX) on formed biofilm. Most of the isolates (89.8%) were able to form a biofilm. Analysis of biofilm formation in different growth conditions showed that changing of temeperature and pH had the stronggest effect on biofilm formation almost equally in group of cystic fibrosis (CF) and non-CF strains. TMP/SMX in concentration of 50 μg/ml reduced completely 24 h old biofilms while

Marjan Biočanin, Haowa Madi, Zorica Vasiljević, Milan Kojić, Branko Jovčić, Jelena Lozo

Polish Journal of Microbiology, Volume 66 , ISSUE 4, 433–438

Original Paper | 04-December-2017

The Determination and Correlation of Various Virulence Genes, ESBL, Serum Bactericidal Effect and Biofilm Formation of Clinical Isolated Classical Klebsiella pneumoniae and Hypervirulent Klebsiella pneumoniae from Respiratory Tract Infected Patients

Klebsiella pneumoniae strains that are commonly recognized by clinicians and microbiologists are termed as classical K. pneumoniae (cKP). A strain with capsule-associated mucopolysaccharide web is known as hypervirulent K. pneumoniae (hvKP) as it enhances the serum resistant and biofilm production. Aim is to determine and correlate various virulence genes, ESBL, serum bactericidal effect and biofilm formation of clinical isolated cKP and hvKP from respiratory tract infected patients. A total of

Rambha K. Shah, Zhao H. Ni, Xiao Y. Sun, Guo Q. Wang, Fan Li

Polish Journal of Microbiology, Volume 66 , ISSUE 4, 501–508

Original Paper | 10-December-2018

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

antibiotic susceptibility test was done using the diffusion method. Biofilm formation was evaluated with microplate method using TTC. Bacteremia caused by Proteus spp. was found in 97 patients, mainly secondary to urinary tract infection. Most of the strains were susceptible to piperacillin with tazobactam (95.9%) and amikacin (86.7%). Elderly patients have a higher risk of mortality after BSIs caused by Proteus spp. A detailed analysis was made for randomly chosen 26 strains isolated from 11 patients


Polish Journal of Microbiology, Volume 67 , ISSUE 4, 471–478

Short Communication | 15-March-2016

Antimicrobial Activity of Penicillin G and N-acetylcystein on Planktonic and Sessile Cells of Streptococcus suis

The aim of this study was to investigate the capacity of Streptococcus suis strains to form biofilms and to evaluate the antimicrobial activity of Penicillin G and N-acetylcystein (NAC) on both S. suis sessile and planktonic forms. Only non-typeable isolates of S. suis were correlated with a greater biofilm formation capacity. The MCI of Penicillin G and NAC required for inhibiting biofilm growth were higher than the required concentration for inhibiting planktonic growth. The combinations of

Ivette Espinosa, Michel Báez, Evelyn Lobo, Siomara Martínez, Marcelo Gottschalk

Polish Journal of Microbiology, Volume 65 , ISSUE 1, 105–109

Short Communication | 30-June-2018

Global Transcriptome Changes of Biofilm-Forming Staphylococcus epidermidis Responding to Total Alkaloids of Sophorea alopecuroides

epidermidis and its biofilm formation of the total alkaloids of S. alopecuroides was mainly due to the regulation of the sulfur metabolism pathways of S. epidermidis.


Polish Journal of Microbiology, Volume 67 , ISSUE 2, 223–226

Short Communication | 27-September-2017

Clonal Analysis of Clinical and Environmental Pseudomonas aeruginosa Isolates from Meknes Region, Morocco

From 123 clinical and environmental Pseudomonas aeruginosa isolates, 24 strains were selected for their similar antibioresistance, virulence and biofilm formation profiles, to examine their diversity and occurrence of clones within two hospitals and different natural sites in Meknes (Morocco). Pulsed-field gel electrophoresis, using DraI enzyme, didn’t reveal a close relationship between clinical and environmentalisolates nor between strains of the two hospitals. 19 genotypes were

Itto Maroui, Abouddihaj Barguigua, Asmae Aboulkacem, Hanane Elhafa, Khadija Ouarrak, Mohammed Sbiti, Lhoussain Louzi, Mohammed Timinouni, Abdelhaq Belhaj

Polish Journal of Microbiology, Volume 66 , ISSUE 3, 397–400

original-paper | 01-July-2019

Effects of Sodium Tripolyphosphate on Oral Commensal and Pathogenic Bacteria

at 37°C for 72 h. The MIC was defined as the lowest concentration that inhibited the bacterial growth on the plate. To evaluate the effect of polyP3 on the growth of the bacteria at a high inoculum density, each bacterial strain cultured to exponential phase was adjusted to approximately 108 cells/ml in B-HK, then exposed to polyP3 at various concentrations. The bacterial growth was measured by reading OD600 after 24 hours. Total growth and biofilm formation of mixed bacterial culture. We also


Polish Journal of Microbiology, Volume 68 , ISSUE 2, 263–268

Original Paper | 26-August-2016

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

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

Polish Journal of Microbiology, Volume 65 , ISSUE 3, 307–318

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