Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200178 (University of Belgrade, Faculty of Biology)

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Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200178 (University of Belgrade, Faculty of Biology) (en)
Ministarstvo prosvete, nauke i tehnološkog razvoja Republike Srbije, Ugovor br. 451-03-68/2020-14/200178 (Univerzitet u Beogradu, Biološki fakultet) (sr_RS)
Министарство просвете, науке и технолошког развоја Републике Србије, Уговор бр. 451-03-68/2020-14/200178 (Универзитет у Београду, Биолошки факултет) (sr)
Authors

Publications

Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties

Tomić, Nina; Matić, Tamara; Filipović, Nenad; Mitić Ćulafić, Dragana; Boccacccini, Aldo R.; Stevanović, Magdalena

(SAGE Publications Ltd., 2023)

TY  - JOUR
AU  - Tomić, Nina
AU  - Matić, Tamara
AU  - Filipović, Nenad
AU  - Mitić Ćulafić, Dragana
AU  - Boccacccini, Aldo R.
AU  - Stevanović, Magdalena
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/15195
AB  - Recently, many studies have shown various beneficial effects of polyphenol resveratrol (Res) on human health. The most important of these effects include cardioprotective, neuroprotective, anti-cancer, anti-inflammatory, osteoinductive, and anti-microbial effects. Resveratrol has cis and trans isoforms, with the trans isoform being more stable and biologically active. Despite the results of in vitro experiments, resveratrol has limited potential for application in vivo due to its poor water solubility, sensitivity to oxygen, light, and heat, rapid metabolism, and therefore low bioavailability. The possible solution to overcome these limitations could be the synthesis of resveratrol in nanoparticle form. Accordingly, in this study, we have developed a simple, green solvent/non-solvent physicochemical method to synthesize stable, uniform, carrier-free resveratrol nanobelt-like particles (ResNPs) for applications in tissue engineering. UV–visible spectroscopy (UV-Vis) was used to identify the trans isoform of ResNPs which remained stable for at least 63 days. The additional qualitative analysis was performed by Fourier transform infrared spectroscopy (FTIR), while X-ray diffraction (XRD) determined the monoclinic structure of resveratrol with a significant difference in the intensity of diffraction peaks between commercial and nano-belt form. The morphology of ResNPs was evaluated by optical microscopy and field-emission scanning electron microscope (FE-SEM) that revealed a uniform nanobelt-like structure with an individual thickness of less than 1 μm. Bioactivity was confirmed using Artemia salina in vivo toxicity assay, while 2,2–diphenyl-1-picrylhydrazylhydrate (DPPH) reduction assay showed the good antioxidative potential of concentrations of 100 μg/ml and lower. Microdilution assay on several reference strains and clinical isolates showed promising antibacterial potential on Staphylococci, with minimal inhibitory concentration (MIC) being 800 μg/ml. Bioactive glass-based scaffolds were coated with ResNPs and characterized to confirm coating potential. All of the above make these particles a promising bioactive, easy-to-handle component in various biomaterial formulations.
PB  - SAGE Publications Ltd.
T2  - Journal of Biomaterials Applications
T1  - Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties
SP  - 122
EP  - 133
VL  - 38
IS  - 1
DO  - 10.1177/08853282231183109
UR  - https://hdl.handle.net/21.15107/rcub_dais_15195
ER  - 
@article{
author = "Tomić, Nina and Matić, Tamara and Filipović, Nenad and Mitić Ćulafić, Dragana and Boccacccini, Aldo R. and Stevanović, Magdalena",
year = "2023",
abstract = "Recently, many studies have shown various beneficial effects of polyphenol resveratrol (Res) on human health. The most important of these effects include cardioprotective, neuroprotective, anti-cancer, anti-inflammatory, osteoinductive, and anti-microbial effects. Resveratrol has cis and trans isoforms, with the trans isoform being more stable and biologically active. Despite the results of in vitro experiments, resveratrol has limited potential for application in vivo due to its poor water solubility, sensitivity to oxygen, light, and heat, rapid metabolism, and therefore low bioavailability. The possible solution to overcome these limitations could be the synthesis of resveratrol in nanoparticle form. Accordingly, in this study, we have developed a simple, green solvent/non-solvent physicochemical method to synthesize stable, uniform, carrier-free resveratrol nanobelt-like particles (ResNPs) for applications in tissue engineering. UV–visible spectroscopy (UV-Vis) was used to identify the trans isoform of ResNPs which remained stable for at least 63 days. The additional qualitative analysis was performed by Fourier transform infrared spectroscopy (FTIR), while X-ray diffraction (XRD) determined the monoclinic structure of resveratrol with a significant difference in the intensity of diffraction peaks between commercial and nano-belt form. The morphology of ResNPs was evaluated by optical microscopy and field-emission scanning electron microscope (FE-SEM) that revealed a uniform nanobelt-like structure with an individual thickness of less than 1 μm. Bioactivity was confirmed using Artemia salina in vivo toxicity assay, while 2,2–diphenyl-1-picrylhydrazylhydrate (DPPH) reduction assay showed the good antioxidative potential of concentrations of 100 μg/ml and lower. Microdilution assay on several reference strains and clinical isolates showed promising antibacterial potential on Staphylococci, with minimal inhibitory concentration (MIC) being 800 μg/ml. Bioactive glass-based scaffolds were coated with ResNPs and characterized to confirm coating potential. All of the above make these particles a promising bioactive, easy-to-handle component in various biomaterial formulations.",
publisher = "SAGE Publications Ltd.",
journal = "Journal of Biomaterials Applications",
title = "Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties",
pages = "122-133",
volume = "38",
number = "1",
doi = "10.1177/08853282231183109",
url = "https://hdl.handle.net/21.15107/rcub_dais_15195"
}
Tomić, N., Matić, T., Filipović, N., Mitić Ćulafić, D., Boccacccini, A. R.,& Stevanović, M.. (2023). Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties. in Journal of Biomaterials Applications
SAGE Publications Ltd.., 38(1), 122-133.
https://doi.org/10.1177/08853282231183109
https://hdl.handle.net/21.15107/rcub_dais_15195
Tomić N, Matić T, Filipović N, Mitić Ćulafić D, Boccacccini AR, Stevanović M. Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties. in Journal of Biomaterials Applications. 2023;38(1):122-133.
doi:10.1177/08853282231183109
https://hdl.handle.net/21.15107/rcub_dais_15195 .
Tomić, Nina, Matić, Tamara, Filipović, Nenad, Mitić Ćulafić, Dragana, Boccacccini, Aldo R., Stevanović, Magdalena, "Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties" in Journal of Biomaterials Applications, 38, no. 1 (2023):122-133,
https://doi.org/10.1177/08853282231183109 .,
https://hdl.handle.net/21.15107/rcub_dais_15195 .
3
2

Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties

Tomić, Nina; Matić, Tamara; Filipović, Nenad; Mitić Ćulafić, Dragana; Boccacccini, Aldo R.; Stevanović, Magdalena

(SAGE Publications Ltd., 2023)

TY  - JOUR
AU  - Tomić, Nina
AU  - Matić, Tamara
AU  - Filipović, Nenad
AU  - Mitić Ćulafić, Dragana
AU  - Boccacccini, Aldo R.
AU  - Stevanović, Magdalena
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14705
AB  - Recently, many studies have shown various beneficial effects of polyphenol resveratrol (Res) on human health. The most important of these effects include cardioprotective, neuroprotective, anti-cancer, anti-inflammatory, osteoinductive, and anti-microbial effects. Resveratrol has cis and trans isoforms, with the trans isoform being more stable and biologically active. Despite the results of in vitro experiments, resveratrol has limited potential for application in vivo due to its poor water solubility, sensitivity to oxygen, light, and heat, rapid metabolism, and therefore low bioavailability. The possible solution to overcome these limitations could be the synthesis of resveratrol in nanoparticle form. Accordingly, in this study, we have developed a simple, green solvent/non-solvent physicochemical method to synthesize stable, uniform, carrier-free resveratrol nanobelt-like particles (ResNPs) for applications in tissue engineering. UV–visible spectroscopy (UV-Vis) was used to identify the trans isoform of ResNPs which remained stable for at least 63 days. The additional qualitative analysis was performed by Fourier transform infrared spectroscopy (FTIR), while X-ray diffraction (XRD) determined the monoclinic structure of resveratrol with a significant difference in the intensity of diffraction peaks between commercial and nano-belt form. The morphology of ResNPs was evaluated by optical microscopy and field-emission scanning electron microscope (FE-SEM) that revealed a uniform nanobelt-like structure with an individual thickness of less than 1 μm. Bioactivity was confirmed using Artemia salina in vivo toxicity assay, while 2,2–diphenyl-1-picrylhydrazylhydrate (DPPH) reduction assay showed the good antioxidative potential of concentrations of 100 μg/ml and lower. Microdilution assay on several reference strains and clinical isolates showed promising antibacterial potential on Staphylococci, with minimal inhibitory concentration (MIC) being 800 μg/ml. Bioactive glass-based scaffolds were coated with ResNPs and characterized to confirm coating potential. All of the above make these particles a promising bioactive, easy-to-handle component in various biomaterial formulations.
PB  - SAGE Publications Ltd.
T2  - Journal of Biomaterials Applications
T1  - Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties
SP  - 122
EP  - 133
VL  - 38
IS  - 1
DO  - 10.1177/08853282231183109
UR  - https://hdl.handle.net/21.15107/rcub_dais_14705
ER  - 
@article{
author = "Tomić, Nina and Matić, Tamara and Filipović, Nenad and Mitić Ćulafić, Dragana and Boccacccini, Aldo R. and Stevanović, Magdalena",
year = "2023",
abstract = "Recently, many studies have shown various beneficial effects of polyphenol resveratrol (Res) on human health. The most important of these effects include cardioprotective, neuroprotective, anti-cancer, anti-inflammatory, osteoinductive, and anti-microbial effects. Resveratrol has cis and trans isoforms, with the trans isoform being more stable and biologically active. Despite the results of in vitro experiments, resveratrol has limited potential for application in vivo due to its poor water solubility, sensitivity to oxygen, light, and heat, rapid metabolism, and therefore low bioavailability. The possible solution to overcome these limitations could be the synthesis of resveratrol in nanoparticle form. Accordingly, in this study, we have developed a simple, green solvent/non-solvent physicochemical method to synthesize stable, uniform, carrier-free resveratrol nanobelt-like particles (ResNPs) for applications in tissue engineering. UV–visible spectroscopy (UV-Vis) was used to identify the trans isoform of ResNPs which remained stable for at least 63 days. The additional qualitative analysis was performed by Fourier transform infrared spectroscopy (FTIR), while X-ray diffraction (XRD) determined the monoclinic structure of resveratrol with a significant difference in the intensity of diffraction peaks between commercial and nano-belt form. The morphology of ResNPs was evaluated by optical microscopy and field-emission scanning electron microscope (FE-SEM) that revealed a uniform nanobelt-like structure with an individual thickness of less than 1 μm. Bioactivity was confirmed using Artemia salina in vivo toxicity assay, while 2,2–diphenyl-1-picrylhydrazylhydrate (DPPH) reduction assay showed the good antioxidative potential of concentrations of 100 μg/ml and lower. Microdilution assay on several reference strains and clinical isolates showed promising antibacterial potential on Staphylococci, with minimal inhibitory concentration (MIC) being 800 μg/ml. Bioactive glass-based scaffolds were coated with ResNPs and characterized to confirm coating potential. All of the above make these particles a promising bioactive, easy-to-handle component in various biomaterial formulations.",
publisher = "SAGE Publications Ltd.",
journal = "Journal of Biomaterials Applications",
title = "Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties",
pages = "122-133",
volume = "38",
number = "1",
doi = "10.1177/08853282231183109",
url = "https://hdl.handle.net/21.15107/rcub_dais_14705"
}
Tomić, N., Matić, T., Filipović, N., Mitić Ćulafić, D., Boccacccini, A. R.,& Stevanović, M.. (2023). Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties. in Journal of Biomaterials Applications
SAGE Publications Ltd.., 38(1), 122-133.
https://doi.org/10.1177/08853282231183109
https://hdl.handle.net/21.15107/rcub_dais_14705
Tomić N, Matić T, Filipović N, Mitić Ćulafić D, Boccacccini AR, Stevanović M. Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties. in Journal of Biomaterials Applications. 2023;38(1):122-133.
doi:10.1177/08853282231183109
https://hdl.handle.net/21.15107/rcub_dais_14705 .
Tomić, Nina, Matić, Tamara, Filipović, Nenad, Mitić Ćulafić, Dragana, Boccacccini, Aldo R., Stevanović, Magdalena, "Synthesis and characterization of innovative resveratrol nanobelt-like particles and assessment of their bioactivity, antioxidative and antibacterial properties" in Journal of Biomaterials Applications, 38, no. 1 (2023):122-133,
https://doi.org/10.1177/08853282231183109 .,
https://hdl.handle.net/21.15107/rcub_dais_14705 .
3
3

Cinnamon essential oil and its emulsion as efficient antibiofilm agents to combat Acinetobacter baumannii

Ganić, Tea; Vuletić, Stefana; Nikolić, Biljana; Stevanović, Magdalena; Kuzmanović, Maja; Kekić, Dušan; Đurović, Saša; Cvetković, Stefana; Mitić-Ćulafić, Dragana

(2022)

TY  - JOUR
AU  - Ganić, Tea
AU  - Vuletić, Stefana
AU  - Nikolić, Biljana
AU  - Stevanović, Magdalena
AU  - Kuzmanović, Maja
AU  - Kekić, Dušan
AU  - Đurović, Saša
AU  - Cvetković, Stefana
AU  - Mitić-Ćulafić, Dragana
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13509
AB  - Acinetobacter baumannii is an emerging nosocomial pathogen resistant to a wide spectrum of antibiotics, with great potential to form a biofilm, which further aggravates treatment of infections caused by it. Therefore, searching for new potent agents that are efficient against A. baumannii seems to be a necessity. One of them, which has already been proven to possess a wide spectrum of biological activities, including antimicrobial effect, is cinnamon essential oil. Still, further increase of antibacterial efficacy and improvement of bioavailability of cinnamon oil is possible by emulsification process. The aim of this study was comparative analysis of cinnamon essential oil and its emulsion against biofilm forming A. baumannii clinical isolates. Furthermore, the investigation of toxicological aspects of possible applications of essential oil and emulsion was done as well. Gas chromatography–mass spectrometry of essential oil indicated trans-cinnamaldehyde as the most abundant component. The cinnamon emulsion was synthesized from cinnamon essential oil by combining modified low- and high- energy methods. Synthesized emulsion was characterized with Fourier-transform infrared spectroscopy and photon correlation spectroscopy. Both substances exhibited significant antibacterial (minimal inhibitory concentrations in the range 0.125–0.5 mg/ml) and antibiofilm effects (inhibitions of formation and reduction of pre-formed biofilm were 47–81 and 30–62%, respectively). Compared to essential oil, the efficacy of emulsion was even stronger considering the small share of pure oil (20%) in the emulsion. The result of biofilm eradication assay was confirmed by scanning electron microscopy. Even though the cytotoxicity was high especially for the emulsion, genotoxicity was not determined. In conclusion, strong antibacterial/antibiofilm effect against A. baumannii of the cinnamon essential oil and the fact that emulsification even potentiated the activity, seems to be of great significance. Observed cytotoxicity implicated that further analysis is needed in order to clearly determine active principles being responsible for obtained antibacterial/antibiofilm and cytotoxic properties. Copyright © 2022 Ganić, Vuletić, Nikolić, Stevanović, Kuzmanović, Kekić, Đurović, Cvetković and Mitić-Ćulafić.
T2  - Frontiers in Microbiology
T1  - Cinnamon essential oil and its emulsion as efficient antibiofilm agents to combat Acinetobacter baumannii
VL  - 13
DO  - 10.3389/fmicb.2022.989667
UR  - https://hdl.handle.net/21.15107/rcub_dais_13509
ER  - 
@article{
author = "Ganić, Tea and Vuletić, Stefana and Nikolić, Biljana and Stevanović, Magdalena and Kuzmanović, Maja and Kekić, Dušan and Đurović, Saša and Cvetković, Stefana and Mitić-Ćulafić, Dragana",
year = "2022",
abstract = "Acinetobacter baumannii is an emerging nosocomial pathogen resistant to a wide spectrum of antibiotics, with great potential to form a biofilm, which further aggravates treatment of infections caused by it. Therefore, searching for new potent agents that are efficient against A. baumannii seems to be a necessity. One of them, which has already been proven to possess a wide spectrum of biological activities, including antimicrobial effect, is cinnamon essential oil. Still, further increase of antibacterial efficacy and improvement of bioavailability of cinnamon oil is possible by emulsification process. The aim of this study was comparative analysis of cinnamon essential oil and its emulsion against biofilm forming A. baumannii clinical isolates. Furthermore, the investigation of toxicological aspects of possible applications of essential oil and emulsion was done as well. Gas chromatography–mass spectrometry of essential oil indicated trans-cinnamaldehyde as the most abundant component. The cinnamon emulsion was synthesized from cinnamon essential oil by combining modified low- and high- energy methods. Synthesized emulsion was characterized with Fourier-transform infrared spectroscopy and photon correlation spectroscopy. Both substances exhibited significant antibacterial (minimal inhibitory concentrations in the range 0.125–0.5 mg/ml) and antibiofilm effects (inhibitions of formation and reduction of pre-formed biofilm were 47–81 and 30–62%, respectively). Compared to essential oil, the efficacy of emulsion was even stronger considering the small share of pure oil (20%) in the emulsion. The result of biofilm eradication assay was confirmed by scanning electron microscopy. Even though the cytotoxicity was high especially for the emulsion, genotoxicity was not determined. In conclusion, strong antibacterial/antibiofilm effect against A. baumannii of the cinnamon essential oil and the fact that emulsification even potentiated the activity, seems to be of great significance. Observed cytotoxicity implicated that further analysis is needed in order to clearly determine active principles being responsible for obtained antibacterial/antibiofilm and cytotoxic properties. Copyright © 2022 Ganić, Vuletić, Nikolić, Stevanović, Kuzmanović, Kekić, Đurović, Cvetković and Mitić-Ćulafić.",
journal = "Frontiers in Microbiology",
title = "Cinnamon essential oil and its emulsion as efficient antibiofilm agents to combat Acinetobacter baumannii",
volume = "13",
doi = "10.3389/fmicb.2022.989667",
url = "https://hdl.handle.net/21.15107/rcub_dais_13509"
}
Ganić, T., Vuletić, S., Nikolić, B., Stevanović, M., Kuzmanović, M., Kekić, D., Đurović, S., Cvetković, S.,& Mitić-Ćulafić, D.. (2022). Cinnamon essential oil and its emulsion as efficient antibiofilm agents to combat Acinetobacter baumannii. in Frontiers in Microbiology, 13.
https://doi.org/10.3389/fmicb.2022.989667
https://hdl.handle.net/21.15107/rcub_dais_13509
Ganić T, Vuletić S, Nikolić B, Stevanović M, Kuzmanović M, Kekić D, Đurović S, Cvetković S, Mitić-Ćulafić D. Cinnamon essential oil and its emulsion as efficient antibiofilm agents to combat Acinetobacter baumannii. in Frontiers in Microbiology. 2022;13.
doi:10.3389/fmicb.2022.989667
https://hdl.handle.net/21.15107/rcub_dais_13509 .
Ganić, Tea, Vuletić, Stefana, Nikolić, Biljana, Stevanović, Magdalena, Kuzmanović, Maja, Kekić, Dušan, Đurović, Saša, Cvetković, Stefana, Mitić-Ćulafić, Dragana, "Cinnamon essential oil and its emulsion as efficient antibiofilm agents to combat Acinetobacter baumannii" in Frontiers in Microbiology, 13 (2022),
https://doi.org/10.3389/fmicb.2022.989667 .,
https://hdl.handle.net/21.15107/rcub_dais_13509 .
1
5
5

Cinnamon essential oil and nanoemulsion: antibiofiIm activity on Acinetobacter baumannii clinical isolates

Ganić, Tea; Vuletić, Stefana; Stevanović, Magdalena; Kuzmanović, Maja; Cvetković, Stefana; Nikolić, Biljana; Đurović, Saša; Kekić, Dušan; Mitić-Ćulafić, Dragana

(Wroclaw : College of Physiotherapy, 2022)

TY  - CONF
AU  - Ganić, Tea
AU  - Vuletić, Stefana
AU  - Stevanović, Magdalena
AU  - Kuzmanović, Maja
AU  - Cvetković, Stefana
AU  - Nikolić, Biljana
AU  - Đurović, Saša
AU  - Kekić, Dušan
AU  - Mitić-Ćulafić, Dragana
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13610
AB  - Objective: Acinetobacter baumannii is a pathogenic species which presents a danger to healthcare facilities due to the rapid spread of antibiotic resistance. Plants are currently being explored as a potential source of bioactive compounds that could be used to combat infectious diseases. Cinnamon is used as a food spice, but essential oil has been proven for antimicrobial activity. Due to reduced stability and solubility of essential oil, nanoemulsion (NE) synthesis could provide stronger antimicrobial effects. Investigation and comparison of antimicrobial activity of cinnamon (Cinnamomum zeylanicum L.) bark essential oil (EO) and NE on the A. baumannii ATCC19606 and clinical isolates. Effect of EO and NE on biofilm formation and biofilm eradication.
Methods: GC/MS was performed in order to determine chemical composition of commercially purchased EO (P0125285, Frey + Lau, GmbH, Henstedt-Ulzburg, Germany). Droplet/particle size and polydispersity index of NE was determined by photon correlation spectroscopy (PCS). Minimal inhibitory concentration of EO and NE were defined using MIC assay. Effects of EO and NE were also examined on biofilm formation and eradication. Crystal violet staining was used for biofilm biomass quantification.
Results: GC/MS analysis determined that the most common compound was trans-Cinnamaldehyde (61.9%). NE droplet/particles had multimodal distribution, shown by PCS. MIC values for EO were in range 0.25mg/mL — 0.5mg/mL, and for NE 0.125mg/mL — 0.25mg/mL. Both tested substances showed good effect on biofilm eradication, and destroyed biofilm biomass up to 64%, whilst the inhibition of biofilm formation was up to 70%.
Conclusion: Taking all the results into account, it is a good start for further investigations of both EO and NE as a potential antimicrobial agent. Deeper knowledge about the mechanisms of actions of both of these tested substances could help us to understand the best and the most effective way to use them, in order to combat against Acinetobacter baumannii.
PB  - Wroclaw : College of Physiotherapy
C3  - Programme and the Book of Abstracts / 52nd International Symposium on Essential Oils, Wroclaw, 4-7 September, ISEO 2022
T1  - Cinnamon essential oil and nanoemulsion: antibiofiIm activity on Acinetobacter baumannii clinical isolates
SP  - 85
EP  - 85
UR  - https://hdl.handle.net/21.15107/rcub_dais_13610
ER  - 
@conference{
author = "Ganić, Tea and Vuletić, Stefana and Stevanović, Magdalena and Kuzmanović, Maja and Cvetković, Stefana and Nikolić, Biljana and Đurović, Saša and Kekić, Dušan and Mitić-Ćulafić, Dragana",
year = "2022",
abstract = "Objective: Acinetobacter baumannii is a pathogenic species which presents a danger to healthcare facilities due to the rapid spread of antibiotic resistance. Plants are currently being explored as a potential source of bioactive compounds that could be used to combat infectious diseases. Cinnamon is used as a food spice, but essential oil has been proven for antimicrobial activity. Due to reduced stability and solubility of essential oil, nanoemulsion (NE) synthesis could provide stronger antimicrobial effects. Investigation and comparison of antimicrobial activity of cinnamon (Cinnamomum zeylanicum L.) bark essential oil (EO) and NE on the A. baumannii ATCC19606 and clinical isolates. Effect of EO and NE on biofilm formation and biofilm eradication.
Methods: GC/MS was performed in order to determine chemical composition of commercially purchased EO (P0125285, Frey + Lau, GmbH, Henstedt-Ulzburg, Germany). Droplet/particle size and polydispersity index of NE was determined by photon correlation spectroscopy (PCS). Minimal inhibitory concentration of EO and NE were defined using MIC assay. Effects of EO and NE were also examined on biofilm formation and eradication. Crystal violet staining was used for biofilm biomass quantification.
Results: GC/MS analysis determined that the most common compound was trans-Cinnamaldehyde (61.9%). NE droplet/particles had multimodal distribution, shown by PCS. MIC values for EO were in range 0.25mg/mL — 0.5mg/mL, and for NE 0.125mg/mL — 0.25mg/mL. Both tested substances showed good effect on biofilm eradication, and destroyed biofilm biomass up to 64%, whilst the inhibition of biofilm formation was up to 70%.
Conclusion: Taking all the results into account, it is a good start for further investigations of both EO and NE as a potential antimicrobial agent. Deeper knowledge about the mechanisms of actions of both of these tested substances could help us to understand the best and the most effective way to use them, in order to combat against Acinetobacter baumannii.",
publisher = "Wroclaw : College of Physiotherapy",
journal = "Programme and the Book of Abstracts / 52nd International Symposium on Essential Oils, Wroclaw, 4-7 September, ISEO 2022",
title = "Cinnamon essential oil and nanoemulsion: antibiofiIm activity on Acinetobacter baumannii clinical isolates",
pages = "85-85",
url = "https://hdl.handle.net/21.15107/rcub_dais_13610"
}
Ganić, T., Vuletić, S., Stevanović, M., Kuzmanović, M., Cvetković, S., Nikolić, B., Đurović, S., Kekić, D.,& Mitić-Ćulafić, D.. (2022). Cinnamon essential oil and nanoemulsion: antibiofiIm activity on Acinetobacter baumannii clinical isolates. in Programme and the Book of Abstracts / 52nd International Symposium on Essential Oils, Wroclaw, 4-7 September, ISEO 2022
Wroclaw : College of Physiotherapy., 85-85.
https://hdl.handle.net/21.15107/rcub_dais_13610
Ganić T, Vuletić S, Stevanović M, Kuzmanović M, Cvetković S, Nikolić B, Đurović S, Kekić D, Mitić-Ćulafić D. Cinnamon essential oil and nanoemulsion: antibiofiIm activity on Acinetobacter baumannii clinical isolates. in Programme and the Book of Abstracts / 52nd International Symposium on Essential Oils, Wroclaw, 4-7 September, ISEO 2022. 2022;:85-85.
https://hdl.handle.net/21.15107/rcub_dais_13610 .
Ganić, Tea, Vuletić, Stefana, Stevanović, Magdalena, Kuzmanović, Maja, Cvetković, Stefana, Nikolić, Biljana, Đurović, Saša, Kekić, Dušan, Mitić-Ćulafić, Dragana, "Cinnamon essential oil and nanoemulsion: antibiofiIm activity on Acinetobacter baumannii clinical isolates" in Programme and the Book of Abstracts / 52nd International Symposium on Essential Oils, Wroclaw, 4-7 September, ISEO 2022 (2022):85-85,
https://hdl.handle.net/21.15107/rcub_dais_13610 .

Synthesis and characterization of composite resveratrol/selenium nanomaterial, and preliminary assessment of its’ antioxidative effect and biocompatibility

Tomić, Nina; Filipović, Nenad; Mitić Ćulafić, Dragana; Stevanović, Magdalena

(Belgrade : Institute of Technical Sciences of SASA, 2022)

TY  - CONF
AU  - Tomić, Nina
AU  - Filipović, Nenad
AU  - Mitić Ćulafić, Dragana
AU  - Stevanović, Magdalena
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13501
AB  - Natural chemicals and earth elements are increasingly used in research as basis for novel materials intended for use in medicine. Among phytopharmaceuticals, more specifically polyphenols, resveratrol is known for its’ antioxidative, anticancer, antimicrobial, and other beneficial effects. Selenium, an essential trace element, is lately being recognized in nanoparticle form as less toxic and equally or more efficient than commercially available forms. The synergy of these two agents have not been shown until lately, when their synergistic antioxidative and gene expression effects were investigated for the purpose of treating Alcheimer disease. During our previous research, we have successfully synthesized pure resveratrol particles, as well as selenium nanoparticles (SeNPs). Both of them were separately investigated regarding their biological activities. The first step in evaluation of their possible synergistic antioxidative effect was obtaining the stable composite of these two materials. Synthesis parameters and processing methods were varied, and obtained suspensions assessed by their macroscopic and microscopic characteristics. The sample with both components homogeneously distributed in the particle form, was chosen for further experiments. Ultraviolet-visible (UV-Vis) spectrophotometry and Fourier transform infrared spectroscopy (FTIR) were used to characterize sample, and antioxidative activity (by DPPH reduction assay), and cytocompatibility (using MTT cytotoxicity assay) were additionally determined. Results showed improved cytocompatibility as compared to pure resveratrol particles, and preserved, significantly high antioxidative potential.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Programme and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 - December 2, 2022, Belgrade, Serbia
T1  - Synthesis and characterization of composite resveratrol/selenium nanomaterial, and preliminary assessment of its’ antioxidative effect and biocompatibility
SP  - 5
EP  - 5
UR  - https://hdl.handle.net/21.15107/rcub_dais_13501
ER  - 
@conference{
author = "Tomić, Nina and Filipović, Nenad and Mitić Ćulafić, Dragana and Stevanović, Magdalena",
year = "2022",
abstract = "Natural chemicals and earth elements are increasingly used in research as basis for novel materials intended for use in medicine. Among phytopharmaceuticals, more specifically polyphenols, resveratrol is known for its’ antioxidative, anticancer, antimicrobial, and other beneficial effects. Selenium, an essential trace element, is lately being recognized in nanoparticle form as less toxic and equally or more efficient than commercially available forms. The synergy of these two agents have not been shown until lately, when their synergistic antioxidative and gene expression effects were investigated for the purpose of treating Alcheimer disease. During our previous research, we have successfully synthesized pure resveratrol particles, as well as selenium nanoparticles (SeNPs). Both of them were separately investigated regarding their biological activities. The first step in evaluation of their possible synergistic antioxidative effect was obtaining the stable composite of these two materials. Synthesis parameters and processing methods were varied, and obtained suspensions assessed by their macroscopic and microscopic characteristics. The sample with both components homogeneously distributed in the particle form, was chosen for further experiments. Ultraviolet-visible (UV-Vis) spectrophotometry and Fourier transform infrared spectroscopy (FTIR) were used to characterize sample, and antioxidative activity (by DPPH reduction assay), and cytocompatibility (using MTT cytotoxicity assay) were additionally determined. Results showed improved cytocompatibility as compared to pure resveratrol particles, and preserved, significantly high antioxidative potential.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Programme and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 - December 2, 2022, Belgrade, Serbia",
title = "Synthesis and characterization of composite resveratrol/selenium nanomaterial, and preliminary assessment of its’ antioxidative effect and biocompatibility",
pages = "5-5",
url = "https://hdl.handle.net/21.15107/rcub_dais_13501"
}
Tomić, N., Filipović, N., Mitić Ćulafić, D.,& Stevanović, M.. (2022). Synthesis and characterization of composite resveratrol/selenium nanomaterial, and preliminary assessment of its’ antioxidative effect and biocompatibility. in Programme and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 - December 2, 2022, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 5-5.
https://hdl.handle.net/21.15107/rcub_dais_13501
Tomić N, Filipović N, Mitić Ćulafić D, Stevanović M. Synthesis and characterization of composite resveratrol/selenium nanomaterial, and preliminary assessment of its’ antioxidative effect and biocompatibility. in Programme and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 - December 2, 2022, Belgrade, Serbia. 2022;:5-5.
https://hdl.handle.net/21.15107/rcub_dais_13501 .
Tomić, Nina, Filipović, Nenad, Mitić Ćulafić, Dragana, Stevanović, Magdalena, "Synthesis and characterization of composite resveratrol/selenium nanomaterial, and preliminary assessment of its’ antioxidative effect and biocompatibility" in Programme and the Book of Abstracts / Twentieth Young Researchers' Conference Materials Science and Engineering, November 30 - December 2, 2022, Belgrade, Serbia (2022):5-5,
https://hdl.handle.net/21.15107/rcub_dais_13501 .

Effects of selenium nanoparticles on pathogenic and probiotic food bacteria, and their influence on human intestinal cells

Tomić, Nina; Filipović, Nenad; Mitić-Ćulafić, Dragana; Đokić, Ana; Stevanović, Magdalena

(Novi Sad : University of Novi Sad, Faculty of Technology, 2022)

TY  - CONF
AU  - Tomić, Nina
AU  - Filipović, Nenad
AU  - Mitić-Ćulafić, Dragana
AU  - Đokić, Ana
AU  - Stevanović, Magdalena
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13605
AB  - Selenium is an especially important element for the functioning of antioxidative enzymes, making it one of the essential micronutrients. Although selenium is required in extremely small amounts, often it is lacking from the organism. However, inorganic and organic sources of selenium are known to possess considerable toxicity. Recently, the nanoparticle form of selenium has been shown to exhibit lesser toxicity, and also better antimicrobial and other biological effects, than selenium-containing compounds. Nanotechnology has already found application in many fields, for improving material properties for various purposes, among them, in the process of improving food characteristics. It is possible that selenium nanoparticles can be applied as antimicrobial agents in food, and there has been growing interest in this area of research. We have synthesized selenium nanoparticles (SeNPs) by chemical reduction method, using sodium selenite, ascorbic acid, and bovine serum albumin. The antimicrobial activity of these particles has been assessed by minimum inhibitory concentration assay and colony-forming units count, on Listeria monocytogenes and Salmonella enterica, which are common bacterial food contaminants. As intestinal microbiota, especially probiotic bacteria, have been shown to play important role in organism functioning, we also tested how SeNPs influence Lactobacillus rhamosus and Lactobacillus plantarum. To evaluate cytotoxicity, we used MTT assay on the human intestinal cell line (HT-29). Antioxidative properties were assessed by DPPH assay. SeNPs showed higher antibacterial activity on pathogenic bacteria than on probiotic strains. Cytotoxic effect was present only in the highest tested concentrations. The antioxidative activity was considerable, resulting in above 80% reduction of DPPH free radical, at 1 g/ml of SeNPs. Based on these results, SeNPs are a promising subject for further research in developing materials for food packaging or as antimicrobial selenium additives.
PB  - Novi Sad : University of Novi Sad, Faculty of Technology
C3  - Book of abstracts / 2nd International Conference on Advanced Production and Processing, 20th-22nd October 2022, Novi Sad
T1  - Effects of selenium nanoparticles on pathogenic and probiotic food bacteria, and their influence on human intestinal cells
SP  - 129
EP  - 129
UR  - https://hdl.handle.net/21.15107/rcub_dais_13605
ER  - 
@conference{
author = "Tomić, Nina and Filipović, Nenad and Mitić-Ćulafić, Dragana and Đokić, Ana and Stevanović, Magdalena",
year = "2022",
abstract = "Selenium is an especially important element for the functioning of antioxidative enzymes, making it one of the essential micronutrients. Although selenium is required in extremely small amounts, often it is lacking from the organism. However, inorganic and organic sources of selenium are known to possess considerable toxicity. Recently, the nanoparticle form of selenium has been shown to exhibit lesser toxicity, and also better antimicrobial and other biological effects, than selenium-containing compounds. Nanotechnology has already found application in many fields, for improving material properties for various purposes, among them, in the process of improving food characteristics. It is possible that selenium nanoparticles can be applied as antimicrobial agents in food, and there has been growing interest in this area of research. We have synthesized selenium nanoparticles (SeNPs) by chemical reduction method, using sodium selenite, ascorbic acid, and bovine serum albumin. The antimicrobial activity of these particles has been assessed by minimum inhibitory concentration assay and colony-forming units count, on Listeria monocytogenes and Salmonella enterica, which are common bacterial food contaminants. As intestinal microbiota, especially probiotic bacteria, have been shown to play important role in organism functioning, we also tested how SeNPs influence Lactobacillus rhamosus and Lactobacillus plantarum. To evaluate cytotoxicity, we used MTT assay on the human intestinal cell line (HT-29). Antioxidative properties were assessed by DPPH assay. SeNPs showed higher antibacterial activity on pathogenic bacteria than on probiotic strains. Cytotoxic effect was present only in the highest tested concentrations. The antioxidative activity was considerable, resulting in above 80% reduction of DPPH free radical, at 1 g/ml of SeNPs. Based on these results, SeNPs are a promising subject for further research in developing materials for food packaging or as antimicrobial selenium additives.",
publisher = "Novi Sad : University of Novi Sad, Faculty of Technology",
journal = "Book of abstracts / 2nd International Conference on Advanced Production and Processing, 20th-22nd October 2022, Novi Sad",
title = "Effects of selenium nanoparticles on pathogenic and probiotic food bacteria, and their influence on human intestinal cells",
pages = "129-129",
url = "https://hdl.handle.net/21.15107/rcub_dais_13605"
}
Tomić, N., Filipović, N., Mitić-Ćulafić, D., Đokić, A.,& Stevanović, M.. (2022). Effects of selenium nanoparticles on pathogenic and probiotic food bacteria, and their influence on human intestinal cells. in Book of abstracts / 2nd International Conference on Advanced Production and Processing, 20th-22nd October 2022, Novi Sad
Novi Sad : University of Novi Sad, Faculty of Technology., 129-129.
https://hdl.handle.net/21.15107/rcub_dais_13605
Tomić N, Filipović N, Mitić-Ćulafić D, Đokić A, Stevanović M. Effects of selenium nanoparticles on pathogenic and probiotic food bacteria, and their influence on human intestinal cells. in Book of abstracts / 2nd International Conference on Advanced Production and Processing, 20th-22nd October 2022, Novi Sad. 2022;:129-129.
https://hdl.handle.net/21.15107/rcub_dais_13605 .
Tomić, Nina, Filipović, Nenad, Mitić-Ćulafić, Dragana, Đokić, Ana, Stevanović, Magdalena, "Effects of selenium nanoparticles on pathogenic and probiotic food bacteria, and their influence on human intestinal cells" in Book of abstracts / 2nd International Conference on Advanced Production and Processing, 20th-22nd October 2022, Novi Sad (2022):129-129,
https://hdl.handle.net/21.15107/rcub_dais_13605 .

Ефекат етарског уља цимета и његове наноемулзије на формирање биофилма Acinetobacter baumannii

Ганић, Теа; Вулетић, Стефана; Цветковић, Стефана; Стевановић, Магдалена; Кузмановић, Маја; Ђуровић, Саша; Николић, Биљана; Митић-Ћулафић, Драгана

(Београд : Српско биолошко друштво, 2022)

TY  - CONF
AU  - Ганић, Теа
AU  - Вулетић, Стефана
AU  - Цветковић, Стефана
AU  - Стевановић, Магдалена
AU  - Кузмановић, Маја
AU  - Ђуровић, Саша
AU  - Николић, Биљана
AU  - Митић-Ћулафић, Драгана
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13611
AB  - Антимикробна резистенција представља велики проблем за јавно здравље због ограничених терапијских могућности. Acinetobacter baumannii је опортунистички патоген, отпоран на многе групе антибиотика и доводи до појаве болничких инфекција. Светска здравствена организација прогласила је A. baumannii за патогенa који ефикасно избегава ефекат конвенционалних антибиотика, тако да је потреба за новим антимикробним средствима евидентна. Природни производи укључујући етарска уља су препозната као добри антимикробни агенси. Цимет је вековима познат зачин који има широку примену и за етарско уље (ЕУ цимета) је показано да поседује различите биолошке активности. Циљ ове студије је било испитивање ефекта ЕУ цимета и његове новосинтетисане наноемулзије (НА) на формирање биофилма A. baumannii. ЕУ цимета је хемијски окарактерисано применом GC/MS анализе. Величина капи и полидисперзитет припремљених НА испитани су фотонском корелационом спектроскопијом. МИК вредности су одређене микродилуционом методом, а антибиофилм активност бојењем кристал виолетом. GC/MS анализа је показала да је најзаступљенија компонента испитиваног ЕУ транс-цинамалдехид (61,9%), док НА показују мултимодалну расподелу величине честица. МИК вредности су се кретале у опсегу 0,25-0,5 mg/mL за EУ и 0,125-0,25 mg/mL за НА. Инхибиција формирања биофилма се кретала до 59% и 69%, за ЕУ и НА. Добијени резултати показују да НА има јачи антимикробни и антибиофилм ефекат, па се може рећи да би емулзификација могла бити приступ ка ефикаснијем сузбијању инфекција А. baumannii.
PB  - Београд : Српско биолошко друштво
C3  - Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.
T1  - Ефекат етарског уља цимета и његове наноемулзије на формирање биофилма Acinetobacter baumannii
SP  - 255
EP  - 255
UR  - https://hdl.handle.net/21.15107/rcub_dais_13611
ER  - 
@conference{
author = "Ганић, Теа and Вулетић, Стефана and Цветковић, Стефана and Стевановић, Магдалена and Кузмановић, Маја and Ђуровић, Саша and Николић, Биљана and Митић-Ћулафић, Драгана",
year = "2022",
abstract = "Антимикробна резистенција представља велики проблем за јавно здравље због ограничених терапијских могућности. Acinetobacter baumannii је опортунистички патоген, отпоран на многе групе антибиотика и доводи до појаве болничких инфекција. Светска здравствена организација прогласила је A. baumannii за патогенa који ефикасно избегава ефекат конвенционалних антибиотика, тако да је потреба за новим антимикробним средствима евидентна. Природни производи укључујући етарска уља су препозната као добри антимикробни агенси. Цимет је вековима познат зачин који има широку примену и за етарско уље (ЕУ цимета) је показано да поседује различите биолошке активности. Циљ ове студије је било испитивање ефекта ЕУ цимета и његове новосинтетисане наноемулзије (НА) на формирање биофилма A. baumannii. ЕУ цимета је хемијски окарактерисано применом GC/MS анализе. Величина капи и полидисперзитет припремљених НА испитани су фотонском корелационом спектроскопијом. МИК вредности су одређене микродилуционом методом, а антибиофилм активност бојењем кристал виолетом. GC/MS анализа је показала да је најзаступљенија компонента испитиваног ЕУ транс-цинамалдехид (61,9%), док НА показују мултимодалну расподелу величине честица. МИК вредности су се кретале у опсегу 0,25-0,5 mg/mL за EУ и 0,125-0,25 mg/mL за НА. Инхибиција формирања биофилма се кретала до 59% и 69%, за ЕУ и НА. Добијени резултати показују да НА има јачи антимикробни и антибиофилм ефекат, па се може рећи да би емулзификација могла бити приступ ка ефикаснијем сузбијању инфекција А. baumannii.",
publisher = "Београд : Српско биолошко друштво",
journal = "Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.",
title = "Ефекат етарског уља цимета и његове наноемулзије на формирање биофилма Acinetobacter baumannii",
pages = "255-255",
url = "https://hdl.handle.net/21.15107/rcub_dais_13611"
}
Ганић, Т., Вулетић, С., Цветковић, С., Стевановић, М., Кузмановић, М., Ђуровић, С., Николић, Б.,& Митић-Ћулафић, Д.. (2022). Ефекат етарског уља цимета и његове наноемулзије на формирање биофилма Acinetobacter baumannii. in Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.
Београд : Српско биолошко друштво., 255-255.
https://hdl.handle.net/21.15107/rcub_dais_13611
Ганић Т, Вулетић С, Цветковић С, Стевановић М, Кузмановић М, Ђуровић С, Николић Б, Митић-Ћулафић Д. Ефекат етарског уља цимета и његове наноемулзије на формирање биофилма Acinetobacter baumannii. in Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.. 2022;:255-255.
https://hdl.handle.net/21.15107/rcub_dais_13611 .
Ганић, Теа, Вулетић, Стефана, Цветковић, Стефана, Стевановић, Магдалена, Кузмановић, Маја, Ђуровић, Саша, Николић, Биљана, Митић-Ћулафић, Драгана, "Ефекат етарског уља цимета и његове наноемулзије на формирање биофилма Acinetobacter baumannii" in Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022. (2022):255-255,
https://hdl.handle.net/21.15107/rcub_dais_13611 .

Антибиофилм активност нанокомпозита на бази ресвератрола и селена

Томић, Нина; Филиповић, Ненад; Гајић, Ина; Стевановић, Магдалена; Митић-Ћулафић, Драгана

(Београд : Српско биолошко друштво, 2022)

TY  - CONF
AU  - Томић, Нина
AU  - Филиповић, Ненад
AU  - Гајић, Ина
AU  - Стевановић, Магдалена
AU  - Митић-Ћулафић, Драгана
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13606
AB  - Биофилм као животна форма представља један од најважнијих фактора вируленције који је заступљен у 80-90% инфекција, а посебно на материјалима који се користе у ортопедији. Бактерије у биофилму су вишеструко отпорније на антибиотике и спољашње факторе, те је превенција развоја биофилма некада једини ефикасан метод спречавања појаве и ширења инфекције. У последње време интензивно се проучавају наноструктуирани материјали отпорни на колонизацију бактерија и развој биофилма. Селен је један од елемената који у својој наноформи показује добре биолошке ефекте, а ресвератрол је популарни полифенол чији се потенцијал за примену у медицини интензивно истражује. Добијањем обе ове компоненте у нано- облицима, отварају се даље могућности комбиновања и стварања композитног материјала са побољшаним особинама, за примену у превенцији биофилма. Ресвератрол и наночестице селена појединачно показују добар, али недовољно истражен антимикробни потенцијал. Након њиховог спајања испитали смо ефекат добијеног композита у спречавању формирања биофилма код више бактеријских врста. Концентрације композита од 6% (и ниже) су доводиле до инхибиције формирања биофилма од најмање 20% код већине тестираних бактерија. Посебно се истиче добар антибиофилм ефекат на сојевима P. aeruginosa, где је на тестираним концентрацијама уочена инхибиција формирања биофилма у опсегу од 20-60%. Такође, антибиофилм ефекат композита је у већини случајева бољи у односу на саме честице у истим концентрацијама.
PB  - Београд : Српско биолошко друштво
C3  - Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.
T1  - Антибиофилм активност нанокомпозита на бази ресвератрола и селена
SP  - 252
EP  - 252
UR  - https://hdl.handle.net/21.15107/rcub_dais_13606
ER  - 
@conference{
author = "Томић, Нина and Филиповић, Ненад and Гајић, Ина and Стевановић, Магдалена and Митић-Ћулафић, Драгана",
year = "2022",
abstract = "Биофилм као животна форма представља један од најважнијих фактора вируленције који је заступљен у 80-90% инфекција, а посебно на материјалима који се користе у ортопедији. Бактерије у биофилму су вишеструко отпорније на антибиотике и спољашње факторе, те је превенција развоја биофилма некада једини ефикасан метод спречавања појаве и ширења инфекције. У последње време интензивно се проучавају наноструктуирани материјали отпорни на колонизацију бактерија и развој биофилма. Селен је један од елемената који у својој наноформи показује добре биолошке ефекте, а ресвератрол је популарни полифенол чији се потенцијал за примену у медицини интензивно истражује. Добијањем обе ове компоненте у нано- облицима, отварају се даље могућности комбиновања и стварања композитног материјала са побољшаним особинама, за примену у превенцији биофилма. Ресвератрол и наночестице селена појединачно показују добар, али недовољно истражен антимикробни потенцијал. Након њиховог спајања испитали смо ефекат добијеног композита у спречавању формирања биофилма код више бактеријских врста. Концентрације композита од 6% (и ниже) су доводиле до инхибиције формирања биофилма од најмање 20% код већине тестираних бактерија. Посебно се истиче добар антибиофилм ефекат на сојевима P. aeruginosa, где је на тестираним концентрацијама уочена инхибиција формирања биофилма у опсегу од 20-60%. Такође, антибиофилм ефекат композита је у већини случајева бољи у односу на саме честице у истим концентрацијама.",
publisher = "Београд : Српско биолошко друштво",
journal = "Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.",
title = "Антибиофилм активност нанокомпозита на бази ресвератрола и селена",
pages = "252-252",
url = "https://hdl.handle.net/21.15107/rcub_dais_13606"
}
Томић, Н., Филиповић, Н., Гајић, И., Стевановић, М.,& Митић-Ћулафић, Д.. (2022). Антибиофилм активност нанокомпозита на бази ресвератрола и селена. in Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.
Београд : Српско биолошко друштво., 252-252.
https://hdl.handle.net/21.15107/rcub_dais_13606
Томић Н, Филиповић Н, Гајић И, Стевановић М, Митић-Ћулафић Д. Антибиофилм активност нанокомпозита на бази ресвератрола и селена. in Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022.. 2022;:252-252.
https://hdl.handle.net/21.15107/rcub_dais_13606 .
Томић, Нина, Филиповић, Ненад, Гајић, Ина, Стевановић, Магдалена, Митић-Ћулафић, Драгана, "Антибиофилм активност нанокомпозита на бази ресвератрола и селена" in Основна и примењена истраживања, методика наставе : књига сажетака / Трећи Конгрес биолога Србије, Златибор, Србија 21-25. 9. 2022. (2022):252-252,
https://hdl.handle.net/21.15107/rcub_dais_13606 .

Antibacterial activity of aqueous-ethanolic extracts of Alchemilla vulgaris and Frangula alnus combined with streptomycin

Đukanović, S.; Cvetković, S.; Ganić, T.; Nikolić, B.; Tomić, Nina; Kekić, D.; Mitić Ćulafić, D.

(Belgrade : Vinča Institute of Nuclear Sciences, 2021)

TY  - CONF
AU  - Đukanović, S.
AU  - Cvetković, S.
AU  - Ganić, T.
AU  - Nikolić, B.
AU  - Tomić, Nina
AU  - Kekić, D.
AU  - Mitić Ćulafić, D.
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12380
AB  - The harmful effects that antibiotics may have on human health and increased resistance of microorganisms on antibiotics made pharmaceutical companies look for new alternatives among medicinal and aromatic plants. Recently, as a new strategy to enhance antimicrobial activities of commercial antibiotics, the combination of plant extracts and antibiotics is developing. The aim of the study was to examine the potential synergistic effect of plant extracts with streptomycin. The minimum inhibitory concentration of two extracts obtained from traditional medicinal plants, Alchemilla vulgaris and Frangula alnus, was determined by the microdilution method. The effect of a mixture of extracts and antibiotics was tested with checkerboard assay and confirmed by Time kill assay. The most sensitive strain was E. coli ATCC 25922.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - Proceedings / 7th Workshop Specific Methods for Food Safety and Quality, September 22nd, 2021, Belgrade, Serbia, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021
T1  - Antibacterial activity of aqueous-ethanolic extracts of Alchemilla vulgaris and Frangula alnus combined with streptomycin
SP  - 176
EP  - 179
UR  - https://hdl.handle.net/21.15107/rcub_dais_12380
ER  - 
@conference{
author = "Đukanović, S. and Cvetković, S. and Ganić, T. and Nikolić, B. and Tomić, Nina and Kekić, D. and Mitić Ćulafić, D.",
year = "2021",
abstract = "The harmful effects that antibiotics may have on human health and increased resistance of microorganisms on antibiotics made pharmaceutical companies look for new alternatives among medicinal and aromatic plants. Recently, as a new strategy to enhance antimicrobial activities of commercial antibiotics, the combination of plant extracts and antibiotics is developing. The aim of the study was to examine the potential synergistic effect of plant extracts with streptomycin. The minimum inhibitory concentration of two extracts obtained from traditional medicinal plants, Alchemilla vulgaris and Frangula alnus, was determined by the microdilution method. The effect of a mixture of extracts and antibiotics was tested with checkerboard assay and confirmed by Time kill assay. The most sensitive strain was E. coli ATCC 25922.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "Proceedings / 7th Workshop Specific Methods for Food Safety and Quality, September 22nd, 2021, Belgrade, Serbia, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021",
title = "Antibacterial activity of aqueous-ethanolic extracts of Alchemilla vulgaris and Frangula alnus combined with streptomycin",
pages = "176-179",
url = "https://hdl.handle.net/21.15107/rcub_dais_12380"
}
Đukanović, S., Cvetković, S., Ganić, T., Nikolić, B., Tomić, N., Kekić, D.,& Mitić Ćulafić, D.. (2021). Antibacterial activity of aqueous-ethanolic extracts of Alchemilla vulgaris and Frangula alnus combined with streptomycin. in Proceedings / 7th Workshop Specific Methods for Food Safety and Quality, September 22nd, 2021, Belgrade, Serbia, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021
Belgrade : Vinča Institute of Nuclear Sciences., 176-179.
https://hdl.handle.net/21.15107/rcub_dais_12380
Đukanović S, Cvetković S, Ganić T, Nikolić B, Tomić N, Kekić D, Mitić Ćulafić D. Antibacterial activity of aqueous-ethanolic extracts of Alchemilla vulgaris and Frangula alnus combined with streptomycin. in Proceedings / 7th Workshop Specific Methods for Food Safety and Quality, September 22nd, 2021, Belgrade, Serbia, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021. 2021;:176-179.
https://hdl.handle.net/21.15107/rcub_dais_12380 .
Đukanović, S., Cvetković, S., Ganić, T., Nikolić, B., Tomić, Nina, Kekić, D., Mitić Ćulafić, D., "Antibacterial activity of aqueous-ethanolic extracts of Alchemilla vulgaris and Frangula alnus combined with streptomycin" in Proceedings / 7th Workshop Specific Methods for Food Safety and Quality, September 22nd, 2021, Belgrade, Serbia, 15th International Conference on Fundamental and Applied Aspects of Physical Chemistry - Physical Chemistry 2021 (2021):176-179,
https://hdl.handle.net/21.15107/rcub_dais_12380 .