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1

A novel approach to study the effect of ciprofloxacin on biofilms of Corynebacterium spp. using confocal laser scanning microscopy

100%
Olender A., Bogut A., Magrys A., Krol-Turminska K.
Polish Journal of Microbiology
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2018
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tom 67
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nr 4
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. The effect of ciprofloxacin on the biofilm produced by the antibiotic-susceptible C.striatum strain was evaluated using three concentrations of the antimicrobial agent (2×, 4×, and 6× the MIC – the Minimum Inhibitory Concentration). The basis for the interpretation of results was the statistical analysis of maximum points readings from the surface comprising a total of 245 areas of the biofilm image under the confocal microscope. It was observed that ciprofloxacin at a concentration equal to 4×MIC paradoxically caused an enlargement of areas with live bacteria within the biofilm. Biofilm destruction required the application of ciprofloxacin at a concentration higher than 6×MIC. This suggests that the use of relatively low doses of antimicrobial agents may increase the number of live bacteria within the biofilm, and further facilitate their detachment from the biofilm’s structure thus leading to the spread of bacteria into the bloodstream or to the neighboring tissues. The method of biofilm analysis presented here provides the original and novel approach to the investigation of the diphtheroid biofilms and their interaction with antimicrobial agents.
2

Cytokine levels in the in vitro response of T cells to planktonic and biofilm Corynebacterium amycolatum

100%
Olender A., Bogut A., Magrys A., Tabarkiewicz J.
Polish Journal of Microbiology
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2019
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tom 68
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nr 4
3
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Antibacterial activity of curcumin - a natural phenylpropanoid dimer from the rhizomes of Curcuma longa L. and its synergy with antibiotics

100%
Gorski M., Niedzwiadek J., Magrys A.
Annals of Agricultural and Environmental Medicine
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2022
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tom 29
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nr 3
4

The prognostic and diagnostic markers of invasive candidiasis in patients during chemotherapy

100%
Magrys A., Koziol-Montewka M., Staroslawska E., Gabczynska B.
Polish Journal of Microbiology
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2005
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tom 54
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nr 3
The aim of the work was the early detection of Candida spp. in clinical samples of patients with carcinoma ovariorum undergoing chemotherapy by comparing three indicators of candidiasis: presence of mannan and yeast DNA in the bloodstream and colonization of mucosal membranes by Candida species as a prognostic marker of deep candidiasis. Thirty-one women with carcinoma ovariorum, during chemotherapy without symptoms of deep fungal infections, were examined twice over a six-day period. C. albicans was the dominant organism isolated from mucosal membranes. Two serum samples were positive for mannan on the first day of examination. All these patients were previously colonized by Candida spp. on mucous membranes. Four patients were positive on the last day of examination. Three of these patients were colonized by Candida spp. C. albicans infection was detected early in 4 out of 12 clinical samples by a combination of PCR and mannan-detecting methods. Colonization increases the risk of deep candidiasis. PCR and antigen detection are fast and reliable methods for early detection of Candida in bloodstream. For patients at risk, the clinical samples must be tested by at least two independent methods.
5

Effect of infliximab on the levels of TNF-alpha and TGF-beta in the whole blood cultures of irradiated patients

88%
Staroslawska E., Czarnocki K. J., Koziol-Montewka M., Donica H., Magrys A.
Folia Histochemica et Cytobiologica
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2008
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tom 46
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nr 3
291-297
6
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Prevalence of Legionella pneumophila in water distribution systems in hospitals and public buildings of the Lublin region of eastern Poland

88%
Sikora A., Wojtowicz-Bobin M., Koziol-Montewka M., Magrys A., Gladysz I.
Annals of Agricultural and Environmental Medicine
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2015
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tom 22
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nr 2
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