Zobrazeno 1 - 10 of 17 pro vyhledávání: '"Alexander Rostek"'
1
Akademický článek
Subtoxic cell responses to silica particles with different size and shape
Autor: Markus Kersting, Mateusz Olejnik, Nina Rosenkranz, Kateryna Loza, Marina Breisch, Alexander Rostek, Götz Westphal, Jürgen Bünger, Nadine Ziegler, Alfred Ludwig, Manfred Köller, Christina Sengstock, Matthias Epple
Publikováno v: Scientific Reports, Vol 10, Iss 1, Pp 1-17 (2020)
Abstract Health risks from particles are a priority challenge to health protection at work. Despite the ubiquitous exposure to a wide range of particles and the many years of research in this field, there are fundamental unresolved questions regardin
Externí odkaz: https://doaj.org/article/da5baa601e78446fa22585618f50938e
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2
Akademický článek
Comparative biological effects of spherical noble metal nanoparticles (Rh, Pd, Ag, Pt, Au) with 4–8 nm diameter
Autor: Alexander Rostek, Marina Breisch, Kevin Pappert, Kateryna Loza, Marc Heggen, Manfred Köller, Christina Sengstock, Matthias Epple
Publikováno v: Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 2763-2774 (2018)
For a comparative cytotoxicity study, nanoparticles of the noble metals Rh, Pd, Ag, Pt, and Au (spherical, average diameter 4 to 8 nm) were prepared by reduction in water and colloidally stabilized with poly(N-vinyl pyrrolidone) (PVP). Thus, their sh
Externí odkaz: https://doaj.org/article/ca32ff6adbb641158cacc75d58b8a355
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3
Cell-biological effects of zinc oxide spheres and rods from the nano- to the microscale at sub-toxic levels
Autor: M. Kersting, Oleg Prymak, Mateusz Olejnik, Marina Breisch, L. Schürmeyer, Christina Sengstock, Kateryna Loza, Götz A. Westphal, Manfred Köller, Nina Rosenkranz, Jürgen Bünger, Alexander Rostek, Matthias Epple
Publikováno v: Cell Biology and Toxicology
Zinc oxide particles were synthesized in various sizes and shapes, i.e., spheres of 40-nm, 200-nm, and 500-nm diameter and rods of 40∙100 nm2 and 100∙400 nm2 (all PVP-stabilized and well dispersed in water and cell culture medium). Crystallograph
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::665892c76fecab31783f7a69b6d472f3
https://doi.org/10.1007/s10565-020-09571-z
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4
Combining Small-Angle X-ray Scattering and X-ray Powder Diffraction to Investigate Size, Shape and Crystallinity of Silver, Gold and Alloyed Silver-Gold Nanoparticles
Autor: Jens Helmlinger, Matthias Epple, Kevin Pappert, S. Daumann, Oleg Prymak, Kateryna Loza, Paulo R. A. F. Garcia, Cristiano L. P. Oliveira, Marc Heggen, Viktoria Grasmik, Alexander Rostek
Publikováno v: Brazilian Journal of Physics. 49:183-190
The combination of simultaneous measurements of small and wide angle X-ray scattering (SAXS/WAXS–SWAXS) to investigate the overall size, shape, and crystallinity of silver nanoparticles and alloyed silver-gold nanoparticles in the size range of 8 t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4dd43ee2344a2c8e7517f13d307d04f9
https://doi.org/10.1007/s13538-019-00642-z
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6
Enhanced dissolution of silver nanoparticles in a physical mixture with platinum nanoparticles based on the sacrificial anode effect
Autor: Christian Rurainsky, Manfred Köller, Marc Heggen, Thomas A. Schildhauer, Matthias Epple, Marina Breisch, Kristina Tschulik, Alexander Rostek, Jörg Christian Tiller, Christina Sengstock, Kateryna Loza, Kevin Pappert
Publikováno v: Nanotechnology 31(5), 055703-(2020). doi:10.1088/1361-6528/ab4e48
A strategy to reduce implant-related infections is the inhibition of the initial bacterial implant colonization by biomaterials containing silver (Ag). The antimicrobial efficacy of such biomaterials can be increased by surface enhancement (nanosilve
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::11ecf67651cdf74781a17f62ec304f33
https://pubmed.ncbi.nlm.nih.gov/31618711
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7
Bimetallic silver-platinum nanoparticles with combined osteo-promotive and antimicrobial activity
Autor: Marina Breisch, Alfred Ludwig, Matthias Epple, Christina Sengstock, Jörg Christian Tiller, Manfred Köller, Viktoria Grasmik, Thomas A. Schildhauer, Alexander Rostek, Kevin Pappert, Nadine Ziegler, Kateryna Loza, Marc Heggen
Publikováno v: Nanotechnology. 30(30)
Bimetallic alloyed silver-platinum nanoparticles (AgPt NP) with different metal composition from Ag10Pt90 to Ag90Pt10 in steps of 20 mol% were synthesized. The biological effects of AgPt NP, including cellular uptake, cell viability, osteogenic diffe
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5a1f23d54c9d3b1d2995451c203bc233
https://pubmed.ncbi.nlm.nih.gov/30959494
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8
Comparative biological effects of spherical noble metal nanoparticles (Rh, Pd, Ag, Pt, Au) with 4–8 nm diameter
Autor: Kevin Pappert, Matthias Epple, Marina Breisch, Manfred Köller, Alexander Rostek, Kateryna Loza, Marc Heggen, Christina Sengstock
Publikováno v: Beilstein journal of nanotechnology 9, 2763-2774 (2018). doi:10.3762/bjnano.9.258
Beilstein Journal of Nanotechnology
Beilstein Journal of Nanotechnology, Vol 9, Iss 1, Pp 2763-2774 (2018)
For a comparative cytotoxicity study, nanoparticles of the noble metals Rh, Pd, Ag, Pt, and Au (spherical, average diameter 4 to 8 nm) were prepared by reduction in water and colloidally stabilized with poly(N-vinyl pyrrolidone) (PVP). Thus, their sh
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c9fffc8c0b357c26e22b20c3f6958c6
https://hdl.handle.net/2128/20949
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9
Kinetics of chemotaxis, cytokine, and chemokine release of NR8383 macrophages after exposure to inflammatory and inert granular insoluble particles
Autor: Isabell Schremmer, Kateryna Loza, Alexander Brik, Matthias Epple, Daniel G. Weber, Georg Johnen, Nina Rosenkranz, Alexander Rostek, T. Brüning, Jürgen Bünger, Götz A. Westphal
Publikováno v: Toxicology letters. 263
Accumulation of macrophages and neutrophil granulocytes in the lung are key events in the inflammatory response to inhaled particles. The present study aims at the time course of chemotaxis in vitro in response to the challenge of various biopersiste
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dac494f59c29a629a7bdf90f1f11f526
https://pubmed.ncbi.nlm.nih.gov/27565850
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10
Particle-induced cell migration assay (PICMA): A new in vitro assay for inflammatory particle effects based on permanent cell lines
Autor: Isabell Schremmer, Matthias Epple, Alexander Rostek, Kateryna Loza, Thomas Brüning, Götz A. Westphal, Nina Rosenkranz, Jürgen Bünger
Publikováno v: Toxicology in vitro : an international journal published in association with BIBRA. 29(5)
Inflammation is a decisive pathophysiologic mechanism of particle toxicity and accumulation of neutrophils in the lung is believed to be a crucial step in this process. This study describes an in vitro model for investigations of the chemotactic attr
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1275d7d2122835c3ad2054a565365c89
https://pubmed.ncbi.nlm.nih.gov/25896209
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