TY  - JOUR
AU  - Janićijević, Željko
AU  - Stanković, Ana
AU  - Žegura, Bojana
AU  - Veljović, Đorđe
AU  - Đekić, Ljiljana
AU  - Krajišnik, Danina
AU  - Filipič, Metka
AU  - Stevanović, Magdalena
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12339
AB  - We report an innovative low-cost wet  precipitation  synthesis  method  for  gelatin-modified   zinc oxide nanoparticles (GM ZnO NPs) at the inter- face  between  the  gelatin  hydrogel  and  aqueous  elec- trolyte.  Diffusion  of  ammonia  through  the  hydrogel   matrices with different gelatin contents induced pre- cipitation  of  the  product  in  contact  with  the  surface   of  the  aqueous  solution  of  zinc  ions.  The  obtained   precipitate  was  subjected  to  thermal  treatment  to  partially  decompose  the  adsorbed  gelatin  in  the  NP   structure. Physicochemical properties of obtained  GM  ZnO  NPs  were  characterized  by  X-ray  powder   diffraction (XRD), scanning electron microscopy  (SEM), Fourier transform infrared spectroscopy  (FTIR), differential thermal analysis (DTA), thermo- gravimetry (TG), photon correlation spectroscopy  (PCS),  zeta  potential  measurements,  and  inductively   coupled  plasma-mass  spectrometry  (ICP-MS).  The   estimated mean crystallite size of GM ZnO NP pow- ders was in the range from 5.8 to 12.1 nm. The syn- thesized  NPs  exhibited  nanosheet  morphology  and   arranged into flake-like aggregates. The toxic poten- tial was investigated in vitro in human hepatocellular  carcinoma cell line HepG2. The thiazolyl blue tetra- zolium bromide (MTS) assay was used to assess cell  viability,  2′,7′-dichlor-fluorescein-diacetate  (DCFH- DA)  assay  to  examine  the  formation  of  intracellu- lar  reactive  oxygen  species  (ROS),  and  comet  assay   to  evaluate  the  genotoxic  response.  GM  ZnO  NPs   slightly reduced HepG2 cell viability, did not induce  ROS formation, and showed low genotoxic potential  at  very  high  doses  (100  μg    mL−1).  ZnO  NPs  fabri- cated  and  modified  using  the  proposed  methodol- ogy deserve further study as potential candidates for  antibacterial agents or dietary supplements with low  overall toxicity.
PB  - Springer Science and Business Media B.V.
T2  - Journal of Nanoparticle Research
T1  - Safe-by-design gelatin-modified zinc oxide nanoparticles
VL  - 23
IS  - 9
DO  - 10.1007/s11051-021-05312-3
UR  - https://hdl.handle.net/21.15107/rcub_dais_12339
ER  - 

@article{
author = "Janićijević, Željko and Stanković, Ana and Žegura, Bojana and Veljović, Đorđe and Đekić, Ljiljana and Krajišnik, Danina and Filipič, Metka and Stevanović, Magdalena",
year = "2021",
abstract = "We report an innovative low-cost wet  precipitation  synthesis  method  for  gelatin-modified   zinc oxide nanoparticles (GM ZnO NPs) at the inter- face  between  the  gelatin  hydrogel  and  aqueous  elec- trolyte.  Diffusion  of  ammonia  through  the  hydrogel   matrices with different gelatin contents induced pre- cipitation  of  the  product  in  contact  with  the  surface   of  the  aqueous  solution  of  zinc  ions.  The  obtained   precipitate  was  subjected  to  thermal  treatment  to  partially  decompose  the  adsorbed  gelatin  in  the  NP   structure. Physicochemical properties of obtained  GM  ZnO  NPs  were  characterized  by  X-ray  powder   diffraction (XRD), scanning electron microscopy  (SEM), Fourier transform infrared spectroscopy  (FTIR), differential thermal analysis (DTA), thermo- gravimetry (TG), photon correlation spectroscopy  (PCS),  zeta  potential  measurements,  and  inductively   coupled  plasma-mass  spectrometry  (ICP-MS).  The   estimated mean crystallite size of GM ZnO NP pow- ders was in the range from 5.8 to 12.1 nm. The syn- thesized  NPs  exhibited  nanosheet  morphology  and   arranged into flake-like aggregates. The toxic poten- tial was investigated in vitro in human hepatocellular  carcinoma cell line HepG2. The thiazolyl blue tetra- zolium bromide (MTS) assay was used to assess cell  viability,  2′,7′-dichlor-fluorescein-diacetate  (DCFH- DA)  assay  to  examine  the  formation  of  intracellu- lar  reactive  oxygen  species  (ROS),  and  comet  assay   to  evaluate  the  genotoxic  response.  GM  ZnO  NPs   slightly reduced HepG2 cell viability, did not induce  ROS formation, and showed low genotoxic potential  at  very  high  doses  (100  μg    mL−1).  ZnO  NPs  fabri- cated  and  modified  using  the  proposed  methodol- ogy deserve further study as potential candidates for  antibacterial agents or dietary supplements with low  overall toxicity.",
publisher = "Springer Science and Business Media B.V.",
journal = "Journal of Nanoparticle Research",
title = "Safe-by-design gelatin-modified zinc oxide nanoparticles",
volume = "23",
number = "9",
doi = "10.1007/s11051-021-05312-3",
url = "https://hdl.handle.net/21.15107/rcub_dais_12339"
}

Janićijević, Ž., Stanković, A., Žegura, B., Veljović, Đ., Đekić, L., Krajišnik, D., Filipič, M.,& Stevanović, M.. (2021). Safe-by-design gelatin-modified zinc oxide nanoparticles. in Journal of Nanoparticle Research
Springer Science and Business Media B.V.., 23(9).
https://doi.org/10.1007/s11051-021-05312-3
https://hdl.handle.net/21.15107/rcub_dais_12339

Janićijević Ž, Stanković A, Žegura B, Veljović Đ, Đekić L, Krajišnik D, Filipič M, Stevanović M. Safe-by-design gelatin-modified zinc oxide nanoparticles. in Journal of Nanoparticle Research. 2021;23(9).
doi:10.1007/s11051-021-05312-3
https://hdl.handle.net/21.15107/rcub_dais_12339 .

Janićijević, Željko, Stanković, Ana, Žegura, Bojana, Veljović, Đorđe, Đekić, Ljiljana, Krajišnik, Danina, Filipič, Metka, Stevanović, Magdalena, "Safe-by-design gelatin-modified zinc oxide nanoparticles" in Journal of Nanoparticle Research, 23, no. 9 (2021),
https://doi.org/10.1007/s11051-021-05312-3 .,
https://hdl.handle.net/21.15107/rcub_dais_12339 .

TY  - JOUR
AU  - Janićijević, Željko
AU  - Stanković, Ana
AU  - Žegura, Bojana
AU  - Veljović, Đorđe
AU  - Đekić, Ljiljana
AU  - Krajišnik, Danina
AU  - Filipič, Metka
AU  - Stevanović, Magdalena
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/11876
AB  - We report an innovative low-cost wet  precipitation  synthesis  method  for  gelatin-modified   zinc oxide nanoparticles (GM ZnO NPs) at the inter- face  between  the  gelatin  hydrogel  and  aqueous  elec- trolyte.  Diffusion  of  ammonia  through  the  hydrogel   matrices with different gelatin contents induced pre- cipitation  of  the  product  in  contact  with  the  surface   of  the  aqueous  solution  of  zinc  ions.  The  obtained   precipitate  was  subjected  to  thermal  treatment  to  partially  decompose  the  adsorbed  gelatin  in  the  NP   structure. Physicochemical properties of obtained  GM  ZnO  NPs  were  characterized  by  X-ray  powder   diffraction (XRD), scanning electron microscopy  (SEM), Fourier transform infrared spectroscopy  (FTIR), differential thermal analysis (DTA), thermo- gravimetry (TG), photon correlation spectroscopy  (PCS),  zeta  potential  measurements,  and  inductively   coupled  plasma-mass  spectrometry  (ICP-MS).  The   estimated mean crystallite size of GM ZnO NP pow- ders was in the range from 5.8 to 12.1 nm. The syn- thesized  NPs  exhibited  nanosheet  morphology  and   arranged into flake-like aggregates. The toxic poten- tial was investigated in vitro in human hepatocellular  carcinoma cell line HepG2. The thiazolyl blue tetra- zolium bromide (MTS) assay was used to assess cell  viability,  2′,7′-dichlor-fluorescein-diacetate  (DCFH- DA)  assay  to  examine  the  formation  of  intracellu- lar  reactive  oxygen  species  (ROS),  and  comet  assay   to  evaluate  the  genotoxic  response.  GM  ZnO  NPs   slightly reduced HepG2 cell viability, did not induce  ROS formation, and showed low genotoxic potential  at  very  high  doses  (100  μg    mL−1).  ZnO  NPs  fabri- cated  and  modified  using  the  proposed  methodol- ogy deserve further study as potential candidates for  antibacterial agents or dietary supplements with low  overall toxicity.
PB  - Springer Science and Business Media B.V.
T2  - Journal of Nanoparticle Research
T1  - Safe-by-design gelatin-modified zinc oxide nanoparticles
VL  - 23
IS  - 9
DO  - 10.1007/s11051-021-05312-3
UR  - https://hdl.handle.net/21.15107/rcub_dais_11876
ER  - 

@article{
author = "Janićijević, Željko and Stanković, Ana and Žegura, Bojana and Veljović, Đorđe and Đekić, Ljiljana and Krajišnik, Danina and Filipič, Metka and Stevanović, Magdalena",
year = "2021",
abstract = "We report an innovative low-cost wet  precipitation  synthesis  method  for  gelatin-modified   zinc oxide nanoparticles (GM ZnO NPs) at the inter- face  between  the  gelatin  hydrogel  and  aqueous  elec- trolyte.  Diffusion  of  ammonia  through  the  hydrogel   matrices with different gelatin contents induced pre- cipitation  of  the  product  in  contact  with  the  surface   of  the  aqueous  solution  of  zinc  ions.  The  obtained   precipitate  was  subjected  to  thermal  treatment  to  partially  decompose  the  adsorbed  gelatin  in  the  NP   structure. Physicochemical properties of obtained  GM  ZnO  NPs  were  characterized  by  X-ray  powder   diffraction (XRD), scanning electron microscopy  (SEM), Fourier transform infrared spectroscopy  (FTIR), differential thermal analysis (DTA), thermo- gravimetry (TG), photon correlation spectroscopy  (PCS),  zeta  potential  measurements,  and  inductively   coupled  plasma-mass  spectrometry  (ICP-MS).  The   estimated mean crystallite size of GM ZnO NP pow- ders was in the range from 5.8 to 12.1 nm. The syn- thesized  NPs  exhibited  nanosheet  morphology  and   arranged into flake-like aggregates. The toxic poten- tial was investigated in vitro in human hepatocellular  carcinoma cell line HepG2. The thiazolyl blue tetra- zolium bromide (MTS) assay was used to assess cell  viability,  2′,7′-dichlor-fluorescein-diacetate  (DCFH- DA)  assay  to  examine  the  formation  of  intracellu- lar  reactive  oxygen  species  (ROS),  and  comet  assay   to  evaluate  the  genotoxic  response.  GM  ZnO  NPs   slightly reduced HepG2 cell viability, did not induce  ROS formation, and showed low genotoxic potential  at  very  high  doses  (100  μg    mL−1).  ZnO  NPs  fabri- cated  and  modified  using  the  proposed  methodol- ogy deserve further study as potential candidates for  antibacterial agents or dietary supplements with low  overall toxicity.",
publisher = "Springer Science and Business Media B.V.",
journal = "Journal of Nanoparticle Research",
title = "Safe-by-design gelatin-modified zinc oxide nanoparticles",
volume = "23",
number = "9",
doi = "10.1007/s11051-021-05312-3",
url = "https://hdl.handle.net/21.15107/rcub_dais_11876"
}

Janićijević, Ž., Stanković, A., Žegura, B., Veljović, Đ., Đekić, L., Krajišnik, D., Filipič, M.,& Stevanović, M.. (2021). Safe-by-design gelatin-modified zinc oxide nanoparticles. in Journal of Nanoparticle Research
Springer Science and Business Media B.V.., 23(9).
https://doi.org/10.1007/s11051-021-05312-3
https://hdl.handle.net/21.15107/rcub_dais_11876

Janićijević Ž, Stanković A, Žegura B, Veljović Đ, Đekić L, Krajišnik D, Filipič M, Stevanović M. Safe-by-design gelatin-modified zinc oxide nanoparticles. in Journal of Nanoparticle Research. 2021;23(9).
doi:10.1007/s11051-021-05312-3
https://hdl.handle.net/21.15107/rcub_dais_11876 .

Janićijević, Željko, Stanković, Ana, Žegura, Bojana, Veljović, Đorđe, Đekić, Ljiljana, Krajišnik, Danina, Filipič, Metka, Stevanović, Magdalena, "Safe-by-design gelatin-modified zinc oxide nanoparticles" in Journal of Nanoparticle Research, 23, no. 9 (2021),
https://doi.org/10.1007/s11051-021-05312-3 .,
https://hdl.handle.net/21.15107/rcub_dais_11876 .

TY  - JOUR
AU  - Filipović, Nenad
AU  - Veselinović, Ljiljana
AU  - Ražić, Slavica
AU  - Jeremić, Sanja
AU  - Filipič, Metka
AU  - Žegura, Bojana
AU  - Tomić, Sergej
AU  - Čolić, Miodrag
AU  - Stevanović, Magdalena
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4600
AB  - Poly (ε-caprolactone) (PCL) microspheres as a carrier for sustained release of antibacterial agent, selenium nanoparticles (SeNPs), were developed. The obtained PCL/SeNPs microspheres were in the range 1–4 μm with the encapsulation efficiency of about 90%. The degradation process and release behavior of SeNPs from PCL microspheres were investigated in five different degradation media: phosphate buffer solution (PBS), a solution of lipase isolated from the porcine pancreas in PBS, 0.1 M hydrochloric acid (HCl), Pseudomonas aeruginosa PAO1 cell-free extract in PBS and implant fluid (exudate) from the subcutaneously implanted sterile polyvinyl sponges which induce a foreign-body inflammatory reaction. The samples were thoroughly characterized by SEM, TEM, FTIR, XRD, PSA, DSC, confocal microscopy, and ICP-OES techniques. Under physiological conditions at neutral pH, a very slow release of SeNPs occurred (3 and 8% in the case of PBS or PBS + lipase, respectively and after 660 days), while in the acidic environment their presence was not detected. On the other hand, the release in the medium with bacterial extract was much more pronounced, even after 24 h (13%). After 7 days, the concentration of SeNPs reached a maximum of around 30%. Also, 37% of SeNPs have been released after 11 days of incubation of PCL/SeNPs in the implant exudate. These results suggest that the release of SeNPs from PCL was triggered by Pseudomonas aeruginosa PAO1 bacterium as well as by foreign body inflammatory reaction to implant. Furthermore, PCL/SeNPs microspheres were investigated in terms of their biocompatibility. For this purpose, cytotoxicity, the formation of reactive oxygen species (ROS), and genotoxicity were evaluated on HepG2 cell line. The interaction of PCL/SeNPs with phagocytic cell line (Raw 264.7 macrophages) was monitored as well. It was found that the microspheres in investigated concentration range had no acute cytotoxic effects. Finally, SeNPs, as well as PCL/SeNPs, showed a considerable antibacterial activity against Gram-positive bacteria: Staphylococcus aureus (ATCC 25923) and Staphylococcus epidermidis (ATCC 1228). These results suggest that PCL/SeNPs-based system could be an attractive platform for a prolonged prevention of infections accompanying implants. © 2018 Elsevier B.V.
PB  - Elsevier
T2  - Materials Science and Engineering C
T1  - Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles
SP  - 776
EP  - 789
VL  - 96
DO  - 10.1016/j.msec.2018.11.073
UR  - https://hdl.handle.net/21.15107/rcub_dais_4600
ER  - 

@article{
author = "Filipović, Nenad and Veselinović, Ljiljana and Ražić, Slavica and Jeremić, Sanja and Filipič, Metka and Žegura, Bojana and Tomić, Sergej and Čolić, Miodrag and Stevanović, Magdalena",
year = "2019",
abstract = "Poly (ε-caprolactone) (PCL) microspheres as a carrier for sustained release of antibacterial agent, selenium nanoparticles (SeNPs), were developed. The obtained PCL/SeNPs microspheres were in the range 1–4 μm with the encapsulation efficiency of about 90%. The degradation process and release behavior of SeNPs from PCL microspheres were investigated in five different degradation media: phosphate buffer solution (PBS), a solution of lipase isolated from the porcine pancreas in PBS, 0.1 M hydrochloric acid (HCl), Pseudomonas aeruginosa PAO1 cell-free extract in PBS and implant fluid (exudate) from the subcutaneously implanted sterile polyvinyl sponges which induce a foreign-body inflammatory reaction. The samples were thoroughly characterized by SEM, TEM, FTIR, XRD, PSA, DSC, confocal microscopy, and ICP-OES techniques. Under physiological conditions at neutral pH, a very slow release of SeNPs occurred (3 and 8% in the case of PBS or PBS + lipase, respectively and after 660 days), while in the acidic environment their presence was not detected. On the other hand, the release in the medium with bacterial extract was much more pronounced, even after 24 h (13%). After 7 days, the concentration of SeNPs reached a maximum of around 30%. Also, 37% of SeNPs have been released after 11 days of incubation of PCL/SeNPs in the implant exudate. These results suggest that the release of SeNPs from PCL was triggered by Pseudomonas aeruginosa PAO1 bacterium as well as by foreign body inflammatory reaction to implant. Furthermore, PCL/SeNPs microspheres were investigated in terms of their biocompatibility. For this purpose, cytotoxicity, the formation of reactive oxygen species (ROS), and genotoxicity were evaluated on HepG2 cell line. The interaction of PCL/SeNPs with phagocytic cell line (Raw 264.7 macrophages) was monitored as well. It was found that the microspheres in investigated concentration range had no acute cytotoxic effects. Finally, SeNPs, as well as PCL/SeNPs, showed a considerable antibacterial activity against Gram-positive bacteria: Staphylococcus aureus (ATCC 25923) and Staphylococcus epidermidis (ATCC 1228). These results suggest that PCL/SeNPs-based system could be an attractive platform for a prolonged prevention of infections accompanying implants. © 2018 Elsevier B.V.",
publisher = "Elsevier",
journal = "Materials Science and Engineering C",
title = "Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles",
pages = "776-789",
volume = "96",
doi = "10.1016/j.msec.2018.11.073",
url = "https://hdl.handle.net/21.15107/rcub_dais_4600"
}

Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M.,& Stevanović, M.. (2019). Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. in Materials Science and Engineering C
Elsevier., 96, 776-789.
https://doi.org/10.1016/j.msec.2018.11.073
https://hdl.handle.net/21.15107/rcub_dais_4600

Filipović N, Veselinović L, Ražić S, Jeremić S, Filipič M, Žegura B, Tomić S, Čolić M, Stevanović M. Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. in Materials Science and Engineering C. 2019;96:776-789.
doi:10.1016/j.msec.2018.11.073
https://hdl.handle.net/21.15107/rcub_dais_4600 .

Filipović, Nenad, Veselinović, Ljiljana, Ražić, Slavica, Jeremić, Sanja, Filipič, Metka, Žegura, Bojana, Tomić, Sergej, Čolić, Miodrag, Stevanović, Magdalena, "Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles" in Materials Science and Engineering C, 96 (2019):776-789,
https://doi.org/10.1016/j.msec.2018.11.073 .,
https://hdl.handle.net/21.15107/rcub_dais_4600 .

TY  - JOUR
AU  - Filipović, Nenad
AU  - Veselinović, Ljiljana
AU  - Ražić, Slavica
AU  - Jeremić, Sanja
AU  - Filipič, Metka
AU  - Žegura, Bojana
AU  - Tomić, Sergej
AU  - Čolić, Miodrag
AU  - Stevanović, Magdalena
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/4590
AB  - Poly (ε-caprolactone) (PCL) microspheres as a carrier for sustained release of antibacterial agent, selenium nanoparticles (SeNPs), were developed. The obtained PCL/SeNPs microspheres were in the range 1–4 μm with the encapsulation efficiency of about 90%. The degradation process and release behavior of SeNPs from PCL microspheres were investigated in five different degradation media: phosphate buffer solution (PBS), a solution of lipase isolated from the porcine pancreas in PBS, 0.1 M hydrochloric acid (HCl), Pseudomonas aeruginosa PAO1 cell-free extract in PBS and implant fluid (exudate) from the subcutaneously implanted sterile polyvinyl sponges which induce a foreign-body inflammatory reaction. The samples were thoroughly characterized by SEM, TEM, FTIR, XRD, PSA, DSC, confocal microscopy, and ICP-OES techniques. Under physiological conditions at neutral pH, a very slow release of SeNPs occurred (3 and 8% in the case of PBS or PBS + lipase, respectively and after 660 days), while in the acidic environment their presence was not detected. On the other hand, the release in the medium with bacterial extract was much more pronounced, even after 24 h (13%). After 7 days, the concentration of SeNPs reached a maximum of around 30%. Also, 37% of SeNPs have been released after 11 days of incubation of PCL/SeNPs in the implant exudate. These results suggest that the release of SeNPs from PCL was triggered by Pseudomonas aeruginosa PAO1 bacterium as well as by foreign body inflammatory reaction to implant. Furthermore, PCL/SeNPs microspheres were investigated in terms of their biocompatibility. For this purpose, cytotoxicity, the formation of reactive oxygen species (ROS), and genotoxicity were evaluated on HepG2 cell line. The interaction of PCL/SeNPs with phagocytic cell line (Raw 264.7 macrophages) was monitored as well. It was found that the microspheres in investigated concentration range had no acute cytotoxic effects. Finally, SeNPs, as well as PCL/SeNPs, showed a considerable antibacterial activity against Gram-positive bacteria: Staphylococcus aureus (ATCC 25923) and Staphylococcus epidermidis (ATCC 1228). These results suggest that PCL/SeNPs-based system could be an attractive platform for a prolonged prevention of infections accompanying implants. © 2018 Elsevier B.V.
PB  - Elsevier
T2  - Materials Science and Engineering C
T1  - Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles
SP  - 776
EP  - 789
VL  - 96
DO  - 10.1016/j.msec.2018.11.073
UR  - https://hdl.handle.net/21.15107/rcub_dais_4590
ER  - 

@article{
author = "Filipović, Nenad and Veselinović, Ljiljana and Ražić, Slavica and Jeremić, Sanja and Filipič, Metka and Žegura, Bojana and Tomić, Sergej and Čolić, Miodrag and Stevanović, Magdalena",
year = "2019",
abstract = "Poly (ε-caprolactone) (PCL) microspheres as a carrier for sustained release of antibacterial agent, selenium nanoparticles (SeNPs), were developed. The obtained PCL/SeNPs microspheres were in the range 1–4 μm with the encapsulation efficiency of about 90%. The degradation process and release behavior of SeNPs from PCL microspheres were investigated in five different degradation media: phosphate buffer solution (PBS), a solution of lipase isolated from the porcine pancreas in PBS, 0.1 M hydrochloric acid (HCl), Pseudomonas aeruginosa PAO1 cell-free extract in PBS and implant fluid (exudate) from the subcutaneously implanted sterile polyvinyl sponges which induce a foreign-body inflammatory reaction. The samples were thoroughly characterized by SEM, TEM, FTIR, XRD, PSA, DSC, confocal microscopy, and ICP-OES techniques. Under physiological conditions at neutral pH, a very slow release of SeNPs occurred (3 and 8% in the case of PBS or PBS + lipase, respectively and after 660 days), while in the acidic environment their presence was not detected. On the other hand, the release in the medium with bacterial extract was much more pronounced, even after 24 h (13%). After 7 days, the concentration of SeNPs reached a maximum of around 30%. Also, 37% of SeNPs have been released after 11 days of incubation of PCL/SeNPs in the implant exudate. These results suggest that the release of SeNPs from PCL was triggered by Pseudomonas aeruginosa PAO1 bacterium as well as by foreign body inflammatory reaction to implant. Furthermore, PCL/SeNPs microspheres were investigated in terms of their biocompatibility. For this purpose, cytotoxicity, the formation of reactive oxygen species (ROS), and genotoxicity were evaluated on HepG2 cell line. The interaction of PCL/SeNPs with phagocytic cell line (Raw 264.7 macrophages) was monitored as well. It was found that the microspheres in investigated concentration range had no acute cytotoxic effects. Finally, SeNPs, as well as PCL/SeNPs, showed a considerable antibacterial activity against Gram-positive bacteria: Staphylococcus aureus (ATCC 25923) and Staphylococcus epidermidis (ATCC 1228). These results suggest that PCL/SeNPs-based system could be an attractive platform for a prolonged prevention of infections accompanying implants. © 2018 Elsevier B.V.",
publisher = "Elsevier",
journal = "Materials Science and Engineering C",
title = "Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles",
pages = "776-789",
volume = "96",
doi = "10.1016/j.msec.2018.11.073",
url = "https://hdl.handle.net/21.15107/rcub_dais_4590"
}

Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M.,& Stevanović, M.. (2019). Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. in Materials Science and Engineering C
Elsevier., 96, 776-789.
https://doi.org/10.1016/j.msec.2018.11.073
https://hdl.handle.net/21.15107/rcub_dais_4590

Filipović N, Veselinović L, Ražić S, Jeremić S, Filipič M, Žegura B, Tomić S, Čolić M, Stevanović M. Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. in Materials Science and Engineering C. 2019;96:776-789.
doi:10.1016/j.msec.2018.11.073
https://hdl.handle.net/21.15107/rcub_dais_4590 .

Filipović, Nenad, Veselinović, Ljiljana, Ražić, Slavica, Jeremić, Sanja, Filipič, Metka, Žegura, Bojana, Tomić, Sergej, Čolić, Miodrag, Stevanović, Magdalena, "Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles" in Materials Science and Engineering C, 96 (2019):776-789,
https://doi.org/10.1016/j.msec.2018.11.073 .,
https://hdl.handle.net/21.15107/rcub_dais_4590 .

TY  - DATA
AU  - Filipović, Nenad
AU  - Veselinović, Ljiljana
AU  - Ražić, Slavica
AU  - Jeremić, Sanja
AU  - Filipič, Metka
AU  - Žegura, Bojana
AU  - Tomić, Sergej
AU  - Čolić, Miodrag
AU  - Stevanović, Magdalena
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5972
AB  - 1. Experimental details for ICP-OES measurements; 1.1. Instrumental and operating conditions; 1.2.Solutions and Reagents; 1.3. Microwave assisted acid digestion; 1.4. Calibration curve 2. Experimental details for biocompatibility investigations of PCL/SeNPs; 2.1. Cell culture; 2.2.Determining citotoxicity of samples - MTT assay; 2.3. Determination of intracellular reactive oxygen species formation – DCFH-DA assay; 2.4. DNA damage (comet assay) Figure 1. SEM image of blank PCL microspheres Figure 2. XRD pattern of commercial PGA used in experiments Figure 3. Interaction with PCL/SeNPs in vivo by infiltrating cells. PCL/SeNPs (4mg/animal) were injected into sterile polyvinyl sponges implanted subcutaneously. The infiltrating cells were collected from the sponges after 3h and stained to anti-CD45/IgG Alexa 488 (Green) and Syto59 nuclear stain. PCL/SeNPs were detected as brightly scattering particles sized about 1-4 μm after 546nm laser excitation either intracellularly within granulocytes (A) or extracellularly (B). Note that some cells expressed strongly CD45 on the membrane and the cytoplasm, whereas others displayed a weak membrane expression and a strong expression in the granular ER at the nucleus level. Table 1. Melting temperatures Tm and corresponding enthalpies (heat) of fusion ΔHf of PCL/SeNPs samples taken after different time from different degradation mediums Table 2. Melting temperatures and corresponding enthalpies of PCL/SeNPs samples taken after different degradation periods from P. aeruginosa CFE medium
T2  - Materials Science and Engineering C
T1  - Supplementary information for the article: Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M., Stevanović, M., 2019. Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. Materials Science and Engineering C 96, 776–789. https://doi.org/10.1016/j.msec.2018.11.073
UR  - https://hdl.handle.net/21.15107/rcub_dais_5972
ER  - 

@misc{
author = "Filipović, Nenad and Veselinović, Ljiljana and Ražić, Slavica and Jeremić, Sanja and Filipič, Metka and Žegura, Bojana and Tomić, Sergej and Čolić, Miodrag and Stevanović, Magdalena",
year = "2019",
abstract = "1. Experimental details for ICP-OES measurements; 1.1. Instrumental and operating conditions; 1.2.Solutions and Reagents; 1.3. Microwave assisted acid digestion; 1.4. Calibration curve 2. Experimental details for biocompatibility investigations of PCL/SeNPs; 2.1. Cell culture; 2.2.Determining citotoxicity of samples - MTT assay; 2.3. Determination of intracellular reactive oxygen species formation – DCFH-DA assay; 2.4. DNA damage (comet assay) Figure 1. SEM image of blank PCL microspheres Figure 2. XRD pattern of commercial PGA used in experiments Figure 3. Interaction with PCL/SeNPs in vivo by infiltrating cells. PCL/SeNPs (4mg/animal) were injected into sterile polyvinyl sponges implanted subcutaneously. The infiltrating cells were collected from the sponges after 3h and stained to anti-CD45/IgG Alexa 488 (Green) and Syto59 nuclear stain. PCL/SeNPs were detected as brightly scattering particles sized about 1-4 μm after 546nm laser excitation either intracellularly within granulocytes (A) or extracellularly (B). Note that some cells expressed strongly CD45 on the membrane and the cytoplasm, whereas others displayed a weak membrane expression and a strong expression in the granular ER at the nucleus level. Table 1. Melting temperatures Tm and corresponding enthalpies (heat) of fusion ΔHf of PCL/SeNPs samples taken after different time from different degradation mediums Table 2. Melting temperatures and corresponding enthalpies of PCL/SeNPs samples taken after different degradation periods from P. aeruginosa CFE medium",
journal = "Materials Science and Engineering C",
title = "Supplementary information for the article: Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M., Stevanović, M., 2019. Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. Materials Science and Engineering C 96, 776–789. https://doi.org/10.1016/j.msec.2018.11.073",
url = "https://hdl.handle.net/21.15107/rcub_dais_5972"
}

Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M.,& Stevanović, M.. (2019). Supplementary information for the article: Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M., Stevanović, M., 2019. Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. Materials Science and Engineering C 96, 776–789. https://doi.org/10.1016/j.msec.2018.11.073. in Materials Science and Engineering C.
https://hdl.handle.net/21.15107/rcub_dais_5972

Filipović N, Veselinović L, Ražić S, Jeremić S, Filipič M, Žegura B, Tomić S, Čolić M, Stevanović M. Supplementary information for the article: Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M., Stevanović, M., 2019. Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. Materials Science and Engineering C 96, 776–789. https://doi.org/10.1016/j.msec.2018.11.073. in Materials Science and Engineering C. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_5972 .

Filipović, Nenad, Veselinović, Ljiljana, Ražić, Slavica, Jeremić, Sanja, Filipič, Metka, Žegura, Bojana, Tomić, Sergej, Čolić, Miodrag, Stevanović, Magdalena, "Supplementary information for the article: Filipović, N., Veselinović, L., Ražić, S., Jeremić, S., Filipič, M., Žegura, B., Tomić, S., Čolić, M., Stevanović, M., 2019. Poly (ε-caprolactone) microspheres for prolonged release of selenium nanoparticles. Materials Science and Engineering C 96, 776–789. https://doi.org/10.1016/j.msec.2018.11.073" in Materials Science and Engineering C (2019),
https://hdl.handle.net/21.15107/rcub_dais_5972 .