Wszystkie pola: P.aeruginosa - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Ocena zdolności tworzenia biofilmu P. Aeruginosa na próbkach stopu AZ31 uzyskanego w technologii SLM
Ability of clinical P. Aeruginosa strains to form biofilm on the SLM-produced AZ31 specimens
Autorzy:: Pawlak, A.
Szymczyk, P.
Chlebus, E.
Junka, A.
Secewicz, A.
Powiązania:: https://bibliotekanauki.pl/articles/99015.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Śląska. Katedra Biomechatroniki
Tematy:: selective laser melting
AZ31
P.aeruginosa
technologie przyrostowe
Opis:: W pracy przedstawiono wyniki badań nad oceną zdolności tworzenia biofilmu szczepu bakterii P. Aeruginosa, na powierzchni próbek wyprodukowanych z lekkiego stopu magnezu - AZ31 w technologii SLM. Ilość kolonii bakteryjnych wyhodowanych w biofilnie, jest nawet 700x wyższa, w odniesieniu do skafoldów ze stopu Ti-6Al-7Nb, wyprodukowanych w tej samej technologii.
In this work, results of research on ability to form biofilm by P. Aeruginosa strains on AZ31 specimens manufactured in SLM technology are reported. The number of cells forming biofilm on specimens is even 700 times higher than on scaffolds manufactured from Ti-6Al-7Nb alloy by SLM technique.
Źródło:: Aktualne Problemy Biomechaniki; 2015, 9; 89-92
1898-763X
Pojawia się w:: Aktualne Problemy Biomechaniki
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The chemical digestion of Ti6Al7Nb scaffolds produced by Selective Laser Melting reduces significantly ability of Pseudomonas aeruginosa to form biofilm
Autorzy:: Junka, A. F.
Szymczyk, P.
Secewicz, A.
Pawlak, A.
Smutnicka, D.
Ziółkowski, G.
Bartoszewicz, M.
Chlebus, E.
Powiązania:: https://bibliotekanauki.pl/articles/307092.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:: technologia SLM
Pseudomonas aeruginosa
skafoldy
modyfikacja powierzchni
Ti-6Al-7Nb
SLM technology
scaffolds
surface modification
Opis:: In our previous work we reported the impact of hydrofluoric and nitric acid used for chemical polishing of Ti-6Al-7Nb scaffolds on decrease of the number of Staphylococcus aureus biofilm forming cells. Herein, we tested impact of the aforementioned substances on biofilm of Gram-negative microorganism, Pseudomonas aeruginosa, dangerous pathogen responsible for plethora of implant-related infections. The Ti-6Al-7Nb scaffolds were manufactured using Selective Laser Melting method. Scaffolds were subjected to chemical polishing using a mixture of nitric acid and fluoride or left intact (control group). Pseudomonal biofilm was allowed to form on scaffolds for 24 hours and was removed by mechanical vortex shaking. The number of pseudomonal cells was estimated by means of quantitative culture and Scanning Electron Microscopy. The presence of nitric acid and fluoride on scaffold surfaces was assessed by means of IR and rentgen spetorscopy. Quantitative data were analysed using the Mann–Whitney test (P ≤ 0.05). Our results indicate that application of chemical polishing correlates with significant drop of biofilm-forming pseudomonal cells on the manufactured Ti-6Al-7Nb scaffolds ( p = 0.0133, Mann–Whitney test) compared to the number of biofilm-forming cells on non-polished scaffolds. As X-ray photoelectron spectroscopy revealed the presence of fluoride and nitrogen on the surface of scaffold, we speculate that drop of biofilm forming cells may be caused by biofilm-supressing activity of these two elements.
Źródło:: Acta of Bioengineering and Biomechanics; 2016, 18, 1; 115-120
1509-409X
2450-6303
Pojawia się w:: Acta of Bioengineering and Biomechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Impedance Sensors Made in PCB and LTCC Technologies for Monitoring Growth and Degradation of Pseudomonal Biofilm
Autorzy:: Chabowski, K.
Junka, A. F.
Piasecki, T.
Nowak, D.
Nitsch, K.
Smutnicka, D.
Bartoszewicz, M.
Moczała, M.
Szymczyk, P.
Powiązania:: https://bibliotekanauki.pl/articles/221326.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Pseudomonas aeruginosa
biofilm
interdigitated sensor
impedance spectroscopy
Opis:: The suitability of low-cost impedance sensors for microbiological purposes and biofilm growth monitoring was evaluated. The sensors with interdigitated electrodes were fabricated in PCB and LTCC technologies. The electrodes were golden (LTCC) or gold-plated (PCB) to provide surface stability. The sensors were used for monitoring growth and degradation of the reference ATCC 15442 Pseudomonas aeruginosa strain biofilm in invitro setting. During the experiment, the impedance spectra of the sensors were measured and analysed using electrical equivalent circuit (EEC) modelling. Additionally, the process of adhesion and growth of bacteria on a sensor’s surface was assessed by means of the optical and SEM microscopy. EEC and SEM microscopic analysis revealed that the gold layer on copper electrodes was not tight, making the PCB sensors susceptible to corrosion while the LTCC sensors had good surface stability. It turned out that the LTCC sensors are suitable for monitoring pseudomonal biofilm and the PCB sensors are good detectors of ongoing stages of biofilm formation.
Źródło:: Metrology and Measurement Systems; 2017, 24, 2; 369-380
0860-8229
Pojawia się w:: Metrology and Measurement Systems
Dostawca treści:: Biblioteka Nauki

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