Mitić, Žarko

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  • Mitić, Žarko (8)
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Интеракција ћелија са различитим биоматеријалима in vitro и методе карактеризације

Stojanović, Sanja; Najdanović, Jelena; Mitić, Žarko; Vasiljević, Perica; Ignjatović, Nenad; Najman, Stevo

(Banja Luka : ANURS, 2022)

TY  - CONF
AU  - Stojanović, Sanja
AU  - Najdanović, Jelena
AU  - Mitić, Žarko
AU  - Vasiljević, Perica
AU  - Ignjatović, Nenad
AU  - Najman, Stevo
PY  - 2022
UR  - http://informatikaubiomedicini.ekonferencije.com/presentation/paperpresentation/679/6440
UR  - https://dais.sanu.ac.rs/123456789/13654
AB  - Тестирање биоматеријала намењених за примену у регенеративној медицини на ћелијским моделима in vitro је неопходан први корак у циљу процене биокомпатибилности биоматеријала али и њихове биофункционалности. Постоје различити начини тестирања биоматеријала, као и различити ћелијски модели на којима се врши тестирање. Одабир адекватног ћелијског модела врши се на основу врсте биоматеријала и његове потенцијалне примене а тестирање се врши најпре стандардним тестовима као што су тестови цитотоксичности и генотоксичности а затим се испитују друге биолошке карактеристике као што су нпр. способност биоматеријала да индукује диференцијацију ћелија у одређени тип или способност активације макрофага ка одређеном фенотипу и индукција њиховог одговора ин витро, и многе друге. У овом раду ће бити преглед резултата наших досадашњих истраживања у области карактеризације биоматеријала и испитивања на ћелијским моделима in vitro. Испитивали смо биоматеријале намењене за регенерацију тврдих ткива, нпр. материјали на бази хидроксиапатита, калцијум фосфата, природног и синтетског порекла, тако и биоматеријале за регенерацију меких ткива, нпр. материјали на бази колагена или других полимера како природног тако и синтетског порекла. Да би се побољшала биофункционалност биоматеријала често им се додају биоактивне супстанце или њихове комбинације, а материјали могу бити у различитим облицима, у виду скафолда, у виду гранула, нано- или микро- димензија, мембрана и разним другим, при чему облик материјала утиче и на одабир ћелијског модела који се користи за тестирање. За карактеризацију биматеријала користили смо методе као што су SEM, EDX, FTIR и друге. Рађени су и тестови цитотоксичности, генотоксичности, пролиферације, миграције, диференцијације, фагоцитозе и многи други, а биоматеријале смо тестирали у директном контакту са ћелијама и у индиректном контакту. Испитивали смо и промене биоматеријала након интеракције са ћелијама као и понашање биоматеријала у различитим условима in vitro.
AB  - Testing biomaterials intended for use in regenerative medicine on cell models in vitro is a necessary first step in order to assess the biocompatibility of biomaterials as well as their biofunctionality. There are different methods of testing biomaterials, as well as different cell models on which testing is performed. The selection of an adequate cell model is made based on the type of biomaterial and its potential application, and testing is performed first using standard tests such as cytotoxicity and genotoxicity tests, and then other biological characteristics are examined such as, for example, the ability of biomaterials to induce the differentiation of cells into a certain type or the ability to activate macrophages towards a certain phenotype and the induction of their response in vitro, and many others. This paper will present the results of our research in the field of characterization of biomaterials and examination on cell models in vitro. We examined biomaterials intended for the regeneration of hard tissues, e.g. materials based on hydroxyapatite, calcium phosphate, of natural and synthetic origin, as well as biomaterials for the regeneration of soft tissues, e.g. materials based on collagen or other polymers of both natural and synthetic origin. In order to improve the biofunctionality of biomaterials, bioactive substances or their combinations are often added, and the biomaterials can be in different forms, in the form of scaffolds, in the form of granules, nano- or micro-dimensions, membranes and many others, whereby the shape of the material also affects the selection of the cell model used for testing. To characterize bimaterials, we used methods such as SEM, EDX, FTIR and others. In addition to cytotoxicity and genotoxicity tests, we performed proliferation, migration, differentiation, phagocytosis and many other tests, and we tested biomaterials both in direct contact with cells and in indirect contact. We also examined changes in biomaterials after interaction with cells, as well as the behavior of biomaterials in various conditions in vitro.
PB  - Banja Luka : ANURS
C3  - Contemporary Materials 2022 - Савремени материјали, 8-9. 9. 2022.
T1  - Интеракција ћелија са различитим биоматеријалима in vitro и методе карактеризације
T1  - Interaction of cells with different biomaterials in vitro and methods of characterization
UR  - https://hdl.handle.net/21.15107/rcub_dais_13654
ER  - 
@conference{
author = "Stojanović, Sanja and Najdanović, Jelena and Mitić, Žarko and Vasiljević, Perica and Ignjatović, Nenad and Najman, Stevo",
year = "2022",
abstract = "Тестирање биоматеријала намењених за примену у регенеративној медицини на ћелијским моделима in vitro је неопходан први корак у циљу процене биокомпатибилности биоматеријала али и њихове биофункционалности. Постоје различити начини тестирања биоматеријала, као и различити ћелијски модели на којима се врши тестирање. Одабир адекватног ћелијског модела врши се на основу врсте биоматеријала и његове потенцијалне примене а тестирање се врши најпре стандардним тестовима као што су тестови цитотоксичности и генотоксичности а затим се испитују друге биолошке карактеристике као што су нпр. способност биоматеријала да индукује диференцијацију ћелија у одређени тип или способност активације макрофага ка одређеном фенотипу и индукција њиховог одговора ин витро, и многе друге. У овом раду ће бити преглед резултата наших досадашњих истраживања у области карактеризације биоматеријала и испитивања на ћелијским моделима in vitro. Испитивали смо биоматеријале намењене за регенерацију тврдих ткива, нпр. материјали на бази хидроксиапатита, калцијум фосфата, природног и синтетског порекла, тако и биоматеријале за регенерацију меких ткива, нпр. материјали на бази колагена или других полимера како природног тако и синтетског порекла. Да би се побољшала биофункционалност биоматеријала често им се додају биоактивне супстанце или њихове комбинације, а материјали могу бити у различитим облицима, у виду скафолда, у виду гранула, нано- или микро- димензија, мембрана и разним другим, при чему облик материјала утиче и на одабир ћелијског модела који се користи за тестирање. За карактеризацију биматеријала користили смо методе као што су SEM, EDX, FTIR и друге. Рађени су и тестови цитотоксичности, генотоксичности, пролиферације, миграције, диференцијације, фагоцитозе и многи други, а биоматеријале смо тестирали у директном контакту са ћелијама и у индиректном контакту. Испитивали смо и промене биоматеријала након интеракције са ћелијама као и понашање биоматеријала у различитим условима in vitro., Testing biomaterials intended for use in regenerative medicine on cell models in vitro is a necessary first step in order to assess the biocompatibility of biomaterials as well as their biofunctionality. There are different methods of testing biomaterials, as well as different cell models on which testing is performed. The selection of an adequate cell model is made based on the type of biomaterial and its potential application, and testing is performed first using standard tests such as cytotoxicity and genotoxicity tests, and then other biological characteristics are examined such as, for example, the ability of biomaterials to induce the differentiation of cells into a certain type or the ability to activate macrophages towards a certain phenotype and the induction of their response in vitro, and many others. This paper will present the results of our research in the field of characterization of biomaterials and examination on cell models in vitro. We examined biomaterials intended for the regeneration of hard tissues, e.g. materials based on hydroxyapatite, calcium phosphate, of natural and synthetic origin, as well as biomaterials for the regeneration of soft tissues, e.g. materials based on collagen or other polymers of both natural and synthetic origin. In order to improve the biofunctionality of biomaterials, bioactive substances or their combinations are often added, and the biomaterials can be in different forms, in the form of scaffolds, in the form of granules, nano- or micro-dimensions, membranes and many others, whereby the shape of the material also affects the selection of the cell model used for testing. To characterize bimaterials, we used methods such as SEM, EDX, FTIR and others. In addition to cytotoxicity and genotoxicity tests, we performed proliferation, migration, differentiation, phagocytosis and many other tests, and we tested biomaterials both in direct contact with cells and in indirect contact. We also examined changes in biomaterials after interaction with cells, as well as the behavior of biomaterials in various conditions in vitro.",
publisher = "Banja Luka : ANURS",
journal = "Contemporary Materials 2022 - Савремени материјали, 8-9. 9. 2022.",
title = "Интеракција ћелија са различитим биоматеријалима in vitro и методе карактеризације, Interaction of cells with different biomaterials in vitro and methods of characterization",
url = "https://hdl.handle.net/21.15107/rcub_dais_13654"
}
Stojanović, S., Najdanović, J., Mitić, Ž., Vasiljević, P., Ignjatović, N.,& Najman, S.. (2022). Интеракција ћелија са различитим биоматеријалима in vitro и методе карактеризације. in Contemporary Materials 2022 - Савремени материјали, 8-9. 9. 2022.
Banja Luka : ANURS..
https://hdl.handle.net/21.15107/rcub_dais_13654
Stojanović S, Najdanović J, Mitić Ž, Vasiljević P, Ignjatović N, Najman S. Интеракција ћелија са различитим биоматеријалима in vitro и методе карактеризације. in Contemporary Materials 2022 - Савремени материјали, 8-9. 9. 2022.. 2022;.
https://hdl.handle.net/21.15107/rcub_dais_13654 .
Stojanović, Sanja, Najdanović, Jelena, Mitić, Žarko, Vasiljević, Perica, Ignjatović, Nenad, Najman, Stevo, "Интеракција ћелија са различитим биоматеријалима in vitro и методе карактеризације" in Contemporary Materials 2022 - Савремени материјали, 8-9. 9. 2022. (2022),
https://hdl.handle.net/21.15107/rcub_dais_13654 .

Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review

Mitić, Žarko; Stolić, Aleksandra; Stojanović, Sanja; Najman, Stevo; Ignjatović, Nenad; Nikolić, Goran; Trajanović, Miroslav

(Elsevier, 2017)

TY  - JOUR
AU  - Mitić, Žarko
AU  - Stolić, Aleksandra
AU  - Stojanović, Sanja
AU  - Najman, Stevo
AU  - Ignjatović, Nenad
AU  - Nikolić, Goran
AU  - Trajanović, Miroslav
PY  - 2017
UR  - https://dais.sanu.ac.rs/123456789/2365
AB  - A review of recent advances in instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue is presented in this paper. In recent years, biomaterials attracted great attention primarily because of the wide range of biomedical applications. This paper focuses on the practical aspects of instrumental methods and techniques that were most often applied (X-ray methods, vibrational spectroscopy (IR and Raman), magnetic-resonance spectroscopy (NMR and ESR), mass spectrometry (MS), atomic absorption spectrometry (AAS) and inductively coupled plasma-atomic emission spectrometry (ICP-AES), thermogravimetry (TG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM)) in the structural investigation and physicochemical characterization of biomaterials and bone tissue. The application of some other physicochemical methods was also discussed. Hands-on information is provided about these valuable research tools, emphasizing practical aspects such as typical measurement conditions, their limitations and advantages, interpretation of results and practical applications.
PB  - Elsevier
T2  - Materials Science and Engineering: C
T1  - Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review
SP  - 930
EP  - 949
VL  - 79
DO  - 10.1016/j.msec.2017.05.127
UR  - https://hdl.handle.net/21.15107/rcub_dais_2365
ER  - 
@article{
author = "Mitić, Žarko and Stolić, Aleksandra and Stojanović, Sanja and Najman, Stevo and Ignjatović, Nenad and Nikolić, Goran and Trajanović, Miroslav",
year = "2017",
abstract = "A review of recent advances in instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue is presented in this paper. In recent years, biomaterials attracted great attention primarily because of the wide range of biomedical applications. This paper focuses on the practical aspects of instrumental methods and techniques that were most often applied (X-ray methods, vibrational spectroscopy (IR and Raman), magnetic-resonance spectroscopy (NMR and ESR), mass spectrometry (MS), atomic absorption spectrometry (AAS) and inductively coupled plasma-atomic emission spectrometry (ICP-AES), thermogravimetry (TG), differential thermal analysis (DTA) and differential scanning calorimetry (DSC), scanning electron microscopy (SEM), transmission electron microscopy (TEM)) in the structural investigation and physicochemical characterization of biomaterials and bone tissue. The application of some other physicochemical methods was also discussed. Hands-on information is provided about these valuable research tools, emphasizing practical aspects such as typical measurement conditions, their limitations and advantages, interpretation of results and practical applications.",
publisher = "Elsevier",
journal = "Materials Science and Engineering: C",
title = "Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review",
pages = "930-949",
volume = "79",
doi = "10.1016/j.msec.2017.05.127",
url = "https://hdl.handle.net/21.15107/rcub_dais_2365"
}
Mitić, Ž., Stolić, A., Stojanović, S., Najman, S., Ignjatović, N., Nikolić, G.,& Trajanović, M.. (2017). Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review. in Materials Science and Engineering: C
Elsevier., 79, 930-949.
https://doi.org/10.1016/j.msec.2017.05.127
https://hdl.handle.net/21.15107/rcub_dais_2365
Mitić Ž, Stolić A, Stojanović S, Najman S, Ignjatović N, Nikolić G, Trajanović M. Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review. in Materials Science and Engineering: C. 2017;79:930-949.
doi:10.1016/j.msec.2017.05.127
https://hdl.handle.net/21.15107/rcub_dais_2365 .
Mitić, Žarko, Stolić, Aleksandra, Stojanović, Sanja, Najman, Stevo, Ignjatović, Nenad, Nikolić, Goran, Trajanović, Miroslav, "Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review" in Materials Science and Engineering: C, 79 (2017):930-949,
https://doi.org/10.1016/j.msec.2017.05.127 .,
https://hdl.handle.net/21.15107/rcub_dais_2365 .
65
42
59

Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period

Mitić, Žarko; Najman, Stevo; Cakić, Milorad; Ajduković, Zorica; Ignjatović, Nenad; Nikolić, Ružica; Nikolić, Goran; Stojanović, Sanja; Vukelić, Marija Đ.; Trajanović, Miroslav

(Elsevier, 2014)

TY  - JOUR
AU  - Mitić, Žarko
AU  - Najman, Stevo
AU  - Cakić, Milorad
AU  - Ajduković, Zorica
AU  - Ignjatović, Nenad
AU  - Nikolić, Ružica
AU  - Nikolić, Goran
AU  - Stojanović, Sanja
AU  - Vukelić, Marija Đ.
AU  - Trajanović, Miroslav
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/554
AB  - The influence of glucocorticoids on the composition and mineral/organic content of the mandible in tested animals after recovery and healing phase was investigated in this work. The results of FTIR analysis demonstrated that bone tissue composition was changed after glucocorticoid treatment. The increase of calcium, magnesium, phosphorus content and mineral part of bones was statistically significant in recovery phase and in treatment phase that included calcitonin and thymus extract. Some changes also happened in the organic part of the matrix, as indicated by intensity changes for already present IR bands and the appearance of new IR bands in the region 3500–1300 cm−1.
PB  - Elsevier
T2  - Journal of Molecular Structure
T1  - Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period
SP  - 315
EP  - 320
VL  - 1074
DO  - 10.1016/j.molstruc.2014.06.006
UR  - https://hdl.handle.net/21.15107/rcub_dais_554
ER  - 
@article{
author = "Mitić, Žarko and Najman, Stevo and Cakić, Milorad and Ajduković, Zorica and Ignjatović, Nenad and Nikolić, Ružica and Nikolić, Goran and Stojanović, Sanja and Vukelić, Marija Đ. and Trajanović, Miroslav",
year = "2014",
abstract = "The influence of glucocorticoids on the composition and mineral/organic content of the mandible in tested animals after recovery and healing phase was investigated in this work. The results of FTIR analysis demonstrated that bone tissue composition was changed after glucocorticoid treatment. The increase of calcium, magnesium, phosphorus content and mineral part of bones was statistically significant in recovery phase and in treatment phase that included calcitonin and thymus extract. Some changes also happened in the organic part of the matrix, as indicated by intensity changes for already present IR bands and the appearance of new IR bands in the region 3500–1300 cm−1.",
publisher = "Elsevier",
journal = "Journal of Molecular Structure",
title = "Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period",
pages = "315-320",
volume = "1074",
doi = "10.1016/j.molstruc.2014.06.006",
url = "https://hdl.handle.net/21.15107/rcub_dais_554"
}
Mitić, Ž., Najman, S., Cakić, M., Ajduković, Z., Ignjatović, N., Nikolić, R., Nikolić, G., Stojanović, S., Vukelić, M. Đ.,& Trajanović, M.. (2014). Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period. in Journal of Molecular Structure
Elsevier., 1074, 315-320.
https://doi.org/10.1016/j.molstruc.2014.06.006
https://hdl.handle.net/21.15107/rcub_dais_554
Mitić Ž, Najman S, Cakić M, Ajduković Z, Ignjatović N, Nikolić R, Nikolić G, Stojanović S, Vukelić MĐ, Trajanović M. Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period. in Journal of Molecular Structure. 2014;1074:315-320.
doi:10.1016/j.molstruc.2014.06.006
https://hdl.handle.net/21.15107/rcub_dais_554 .
Mitić, Žarko, Najman, Stevo, Cakić, Milorad, Ajduković, Zorica, Ignjatović, Nenad, Nikolić, Ružica, Nikolić, Goran, Stojanović, Sanja, Vukelić, Marija Đ., Trajanović, Miroslav, "Spectroscopic characterization of bone tissue of experimental animals after glucocorticoid treatment and recovery period" in Journal of Molecular Structure, 1074 (2014):315-320,
https://doi.org/10.1016/j.molstruc.2014.06.006 .,
https://hdl.handle.net/21.15107/rcub_dais_554 .
7
2
7

Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling

Ignjatović, Nenad; Vranješ Đurić, Sanja; Mitić, Žarko; Janković, Drina; Uskoković, Dragan

(Elsevier, 2014)

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Vranješ Đurić, Sanja
AU  - Mitić, Žarko
AU  - Janković, Drina
AU  - Uskoković, Dragan
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/537
AB  - In this study, we have investigated the synthesis of nanoparticles of hydroxyapatite (HAp) and hydroxyapatite coated with chitosan (HAp/Ch) and the chitosan-poly-d,l-lactide-co-glycolide polymer blend (HAp/Ch-PLGA) as an organ-targeting system. We have examined and defined the final destination, as well as the dynamics and the pathways of the synthesized particles following intravenous administration in vivo.

The XRD, ZP, FT-IR and SEM analyses have confirmed that the hydroxyapatite nanoparticles with d50 = 72 nm are coated with polymers. Radioactive 125-Iodine (125I), a low energy gamma emitter, was used to develop a novel in situ method for the radiolabeling of particles and investigation of their biodistribution. 125I-labeled particles exhibited high stability in saline and serum over the second day, which justified their use in the following in vivo studies.

The biodistribution of 125I-labeled particles after intravenous injection in rats differed significantly: HAp particles mostly targeted the liver, HAp/Ch the spleen and the liver, while HAp/Ch-PLGA targeted the lungs. Twenty-four hours post injection, HAp particles were excreted completely, while both 125I-HAp/Ch and 125I-HAp/Ch-PLGA were retained in the body for a prolonged period of time with more than 20% of radioactivity still found in different organs.
PB  - Elsevier
T2  - Materials Science and Engineering C
T1  - Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling
SP  - 439
EP  - 446
VL  - 43
DO  - 10.1016/j.msec.2014.07.046
UR  - https://hdl.handle.net/21.15107/rcub_dais_537
ER  - 
@article{
author = "Ignjatović, Nenad and Vranješ Đurić, Sanja and Mitić, Žarko and Janković, Drina and Uskoković, Dragan",
year = "2014",
abstract = "In this study, we have investigated the synthesis of nanoparticles of hydroxyapatite (HAp) and hydroxyapatite coated with chitosan (HAp/Ch) and the chitosan-poly-d,l-lactide-co-glycolide polymer blend (HAp/Ch-PLGA) as an organ-targeting system. We have examined and defined the final destination, as well as the dynamics and the pathways of the synthesized particles following intravenous administration in vivo.

The XRD, ZP, FT-IR and SEM analyses have confirmed that the hydroxyapatite nanoparticles with d50 = 72 nm are coated with polymers. Radioactive 125-Iodine (125I), a low energy gamma emitter, was used to develop a novel in situ method for the radiolabeling of particles and investigation of their biodistribution. 125I-labeled particles exhibited high stability in saline and serum over the second day, which justified their use in the following in vivo studies.

The biodistribution of 125I-labeled particles after intravenous injection in rats differed significantly: HAp particles mostly targeted the liver, HAp/Ch the spleen and the liver, while HAp/Ch-PLGA targeted the lungs. Twenty-four hours post injection, HAp particles were excreted completely, while both 125I-HAp/Ch and 125I-HAp/Ch-PLGA were retained in the body for a prolonged period of time with more than 20% of radioactivity still found in different organs.",
publisher = "Elsevier",
journal = "Materials Science and Engineering C",
title = "Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling",
pages = "439-446",
volume = "43",
doi = "10.1016/j.msec.2014.07.046",
url = "https://hdl.handle.net/21.15107/rcub_dais_537"
}
Ignjatović, N., Vranješ Đurić, S., Mitić, Ž., Janković, D.,& Uskoković, D.. (2014). Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling. in Materials Science and Engineering C
Elsevier., 43, 439-446.
https://doi.org/10.1016/j.msec.2014.07.046
https://hdl.handle.net/21.15107/rcub_dais_537
Ignjatović N, Vranješ Đurić S, Mitić Ž, Janković D, Uskoković D. Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling. in Materials Science and Engineering C. 2014;43:439-446.
doi:10.1016/j.msec.2014.07.046
https://hdl.handle.net/21.15107/rcub_dais_537 .
Ignjatović, Nenad, Vranješ Đurić, Sanja, Mitić, Žarko, Janković, Drina, Uskoković, Dragan, "Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling" in Materials Science and Engineering C, 43 (2014):439-446,
https://doi.org/10.1016/j.msec.2014.07.046 .,
https://hdl.handle.net/21.15107/rcub_dais_537 .
44
31
46

Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling

Ignjatović, Nenad; Vranješ Đurić, Sanja; Mitić, Žarko; Janković, Drina; Uskoković, Dragan

(Elsevier, 2014)

TY  - JOUR
AU  - Ignjatović, Nenad
AU  - Vranješ Đurić, Sanja
AU  - Mitić, Žarko
AU  - Janković, Drina
AU  - Uskoković, Dragan
PY  - 2014
UR  - https://dais.sanu.ac.rs/123456789/539
AB  - In this study, we have investigated the synthesis of nanoparticles of hydroxyapatite (HAp) and hydroxyapatite coated with chitosan (HAp/Ch) and the chitosan-poly-d,l-lactide-co-glycolide polymer blend (HAp/Ch-PLGA) as an organ-targeting system. We have examined and defined the final destination, as well as the dynamics and the pathways of the synthesized particles following intravenous administration in vivo.

The XRD, ZP, FT-IR and SEM analyses have confirmed that the hydroxyapatite nanoparticles with d50 = 72 nm are coated with polymers. Radioactive 125-Iodine (125I), a low energy gamma emitter, was used to develop a novel in situ method for the radiolabeling of particles and investigation of their biodistribution. 125I-labeled particles exhibited high stability in saline and serum over the second day, which justified their use in the following in vivo studies.

The biodistribution of 125I-labeled particles after intravenous injection in rats differed significantly: HAp particles mostly targeted the liver, HAp/Ch the spleen and the liver, while HAp/Ch-PLGA targeted the lungs. Twenty-four hours post injection, HAp particles were excreted completely, while both 125I-HAp/Ch and 125I-HAp/Ch-PLGA were retained in the body for a prolonged period of time with more than 20% of radioactivity still found in different organs.
PB  - Elsevier
T2  - Materials Science and Engineering: C
T1  - Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling
SP  - 439
EP  - 436
VL  - 43
DO  - 10.1016/j.msec.2014.07.046
UR  - https://hdl.handle.net/21.15107/rcub_dais_539
ER  - 
@article{
author = "Ignjatović, Nenad and Vranješ Đurić, Sanja and Mitić, Žarko and Janković, Drina and Uskoković, Dragan",
year = "2014",
abstract = "In this study, we have investigated the synthesis of nanoparticles of hydroxyapatite (HAp) and hydroxyapatite coated with chitosan (HAp/Ch) and the chitosan-poly-d,l-lactide-co-glycolide polymer blend (HAp/Ch-PLGA) as an organ-targeting system. We have examined and defined the final destination, as well as the dynamics and the pathways of the synthesized particles following intravenous administration in vivo.

The XRD, ZP, FT-IR and SEM analyses have confirmed that the hydroxyapatite nanoparticles with d50 = 72 nm are coated with polymers. Radioactive 125-Iodine (125I), a low energy gamma emitter, was used to develop a novel in situ method for the radiolabeling of particles and investigation of their biodistribution. 125I-labeled particles exhibited high stability in saline and serum over the second day, which justified their use in the following in vivo studies.

The biodistribution of 125I-labeled particles after intravenous injection in rats differed significantly: HAp particles mostly targeted the liver, HAp/Ch the spleen and the liver, while HAp/Ch-PLGA targeted the lungs. Twenty-four hours post injection, HAp particles were excreted completely, while both 125I-HAp/Ch and 125I-HAp/Ch-PLGA were retained in the body for a prolonged period of time with more than 20% of radioactivity still found in different organs.",
publisher = "Elsevier",
journal = "Materials Science and Engineering: C",
title = "Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling",
pages = "439-436",
volume = "43",
doi = "10.1016/j.msec.2014.07.046",
url = "https://hdl.handle.net/21.15107/rcub_dais_539"
}
Ignjatović, N., Vranješ Đurić, S., Mitić, Ž., Janković, D.,& Uskoković, D.. (2014). Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling. in Materials Science and Engineering: C
Elsevier., 43, 439-436.
https://doi.org/10.1016/j.msec.2014.07.046
https://hdl.handle.net/21.15107/rcub_dais_539
Ignjatović N, Vranješ Đurić S, Mitić Ž, Janković D, Uskoković D. Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling. in Materials Science and Engineering: C. 2014;43:439-436.
doi:10.1016/j.msec.2014.07.046
https://hdl.handle.net/21.15107/rcub_dais_539 .
Ignjatović, Nenad, Vranješ Đurić, Sanja, Mitić, Žarko, Janković, Drina, Uskoković, Dragan, "Investigating an organ-targeting platform based on hydroxyapatite nanoparticles using a novel in situ method of radioactive 125Iodine labeling" in Materials Science and Engineering: C, 43 (2014):439-436,
https://doi.org/10.1016/j.msec.2014.07.046 .,
https://hdl.handle.net/21.15107/rcub_dais_539 .
44
31
46

Routes and pathways to small particles based on hydroxyapatite

Ignjatović, Nenad; Vranješ Đurić, Sanja; Mitić, Žarko; Janković, Drina; Uskoković, Dragan

(Belgrade : Materials Research Society of Serbia, 2013)

TY  - CONF
AU  - Ignjatović, Nenad
AU  - Vranješ Đurić, Sanja
AU  - Mitić, Žarko
AU  - Janković, Drina
AU  - Uskoković, Dragan
PY  - 2013
UR  - https://dais.sanu.ac.rs/123456789/393
AB  - Nanoparticles based on hydroxyapatite (NPs) have many useful physicochemical and biological
properties, such as easy preparation and modification, as well as biocompatibility, which make them suitable for transport and unloading of various pharmaceuticals. Hydroxyapatite
nanoparticles coated with bioresorbable polymers have been successfully used as carriers of
antibiotics and vitamins in bone tissue engineering. In this study, we have investigated the synthesis of nanoparticles of hydroxyapatite and hydroxyapatite coated with chitosan and the chitosan-poly-D,L-lactide-co-glycolide polymer blend. The influence of the processing technique on the structure and characteristics of the obtained particles was studied by X-ray diffraction (XRD), particle size distribution analysis (PSD), Fourier transform infrared spectroscopy (FTIR), zeta potential analysis (ZP) and scanning electronic microscopy (SEM). In applied research, an appropriate radioisotope (Iodine-125) was selected and it was used to label particles. The in vivo biodistribution of 125I-labeled particles were studied in healthy Wistar rats following intravenous administration. The XRD, FT-IR and ZP analyses have confirmed that the hydroxyapatite particles with d50=72 nm are coated with chitosan and the chitosan-poly-D,L-lactide-co-glycolide polymer blend. 125I-labeled particles showed completely different behaviour in vivo: hydroxyapatite particles have the highest liver accumulation 10 min after injection but rapid excretion from the body without residual radioactivity 24 hours after injection; chitozan coated hydroxyapatite particles have the highest accumulation in the liver 10 min after injection with considerable amount (almost 50 %) retained 24 hours later; hydroxyapatite particles coated with the chitosanpoly-D,L-lactide-co-glycolide polymer blend have the highest uptake in the lungs 10 minutes after injection and moderate retention in the same organ 24 hours later.
PB  - Belgrade : Materials Research Society of Serbia
C3  - The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
T1  - Routes and pathways to small particles based on hydroxyapatite
SP  - 7
EP  - 7
UR  - https://hdl.handle.net/21.15107/rcub_dais_393
ER  - 
@conference{
author = "Ignjatović, Nenad and Vranješ Đurić, Sanja and Mitić, Žarko and Janković, Drina and Uskoković, Dragan",
year = "2013",
abstract = "Nanoparticles based on hydroxyapatite (NPs) have many useful physicochemical and biological
properties, such as easy preparation and modification, as well as biocompatibility, which make them suitable for transport and unloading of various pharmaceuticals. Hydroxyapatite
nanoparticles coated with bioresorbable polymers have been successfully used as carriers of
antibiotics and vitamins in bone tissue engineering. In this study, we have investigated the synthesis of nanoparticles of hydroxyapatite and hydroxyapatite coated with chitosan and the chitosan-poly-D,L-lactide-co-glycolide polymer blend. The influence of the processing technique on the structure and characteristics of the obtained particles was studied by X-ray diffraction (XRD), particle size distribution analysis (PSD), Fourier transform infrared spectroscopy (FTIR), zeta potential analysis (ZP) and scanning electronic microscopy (SEM). In applied research, an appropriate radioisotope (Iodine-125) was selected and it was used to label particles. The in vivo biodistribution of 125I-labeled particles were studied in healthy Wistar rats following intravenous administration. The XRD, FT-IR and ZP analyses have confirmed that the hydroxyapatite particles with d50=72 nm are coated with chitosan and the chitosan-poly-D,L-lactide-co-glycolide polymer blend. 125I-labeled particles showed completely different behaviour in vivo: hydroxyapatite particles have the highest liver accumulation 10 min after injection but rapid excretion from the body without residual radioactivity 24 hours after injection; chitozan coated hydroxyapatite particles have the highest accumulation in the liver 10 min after injection with considerable amount (almost 50 %) retained 24 hours later; hydroxyapatite particles coated with the chitosanpoly-D,L-lactide-co-glycolide polymer blend have the highest uptake in the lungs 10 minutes after injection and moderate retention in the same organ 24 hours later.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts",
title = "Routes and pathways to small particles based on hydroxyapatite",
pages = "7-7",
url = "https://hdl.handle.net/21.15107/rcub_dais_393"
}
Ignjatović, N., Vranješ Đurić, S., Mitić, Ž., Janković, D.,& Uskoković, D.. (2013). Routes and pathways to small particles based on hydroxyapatite. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts
Belgrade : Materials Research Society of Serbia., 7-7.
https://hdl.handle.net/21.15107/rcub_dais_393
Ignjatović N, Vranješ Đurić S, Mitić Ž, Janković D, Uskoković D. Routes and pathways to small particles based on hydroxyapatite. in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts. 2013;:7-7.
https://hdl.handle.net/21.15107/rcub_dais_393 .
Ignjatović, Nenad, Vranješ Đurić, Sanja, Mitić, Žarko, Janković, Drina, Uskoković, Dragan, "Routes and pathways to small particles based on hydroxyapatite" in The Fifteenth Annual Conference YUCOMAT 2013: Programme and the Book of Abstracts (2013):7-7,
https://hdl.handle.net/21.15107/rcub_dais_393 .

Apatite formation on nanomaterial calcium phosphate/poly-DL-lactide-co-glycolide in simulated body fluid

Vukelić, Marija Đ.; Mitić, Žarko; Miljković, Miroslav; Živković, Jelena M.; Ignjatović, Nenad; Uskoković, Dragan; Živanov Čurlis, Jelena Z.; Vasiljević, Perica; Najman, Stevo

(Milano : Wichtig Publishing, 2012)

TY  - JOUR
AU  - Vukelić, Marija Đ.
AU  - Mitić, Žarko
AU  - Miljković, Miroslav
AU  - Živković, Jelena M.
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
AU  - Živanov Čurlis, Jelena Z.
AU  - Vasiljević, Perica
AU  - Najman, Stevo
PY  - 2012
UR  - https://dais.sanu.ac.rs/123456789/489
AB  - Simulated body fluid (SBF) is an artificial fluid which has ionic composition and ionic concentration similar to human blood plasma. Purpose: This paper compares the interaction between the nanomaterial containing calcium phosphate/poly-dl-lactide-co-glycolide (N-CP/PLGA) and SBF, in order to investigate whether and to what extent inorganic ionic composition of human blood plasma leads to the aforementioned changes in the material. Methods: N-CP/PLGA was incubated for 1, 2, 3, and 5 weeks in SBF. The surface of the material was analyzed on SEM-EDS and FTIR spectrometer, while SBF was subjected to pH and electrical conductivity measurement. Results: Our results indicate that dissolution of the polymer component of the material N-CP/PLGA and precipitation of the material similar to hydroxyapatite on its surface are based on the morphologic changes seen in this material. Conclusions: The mechanism of the apatite formation on the bioceramic surface was intensively studied and was considered crucial in designing the new biomaterials. The results obtained in this work indicate that N-CP/PLGA may be a good candidate for application to bone regeneration.
PB  - Milano : Wichtig Publishing
T2  - Journal of Applied Biomaterials and Functional Materials
T1  - Apatite formation on nanomaterial calcium phosphate/poly-DL-lactide-co-glycolide in simulated body fluid
SP  - 43
EP  - 48
DO  - 10.5301/JABFM.2012.9274
UR  - https://hdl.handle.net/21.15107/rcub_dais_489
ER  - 
@article{
author = "Vukelić, Marija Đ. and Mitić, Žarko and Miljković, Miroslav and Živković, Jelena M. and Ignjatović, Nenad and Uskoković, Dragan and Živanov Čurlis, Jelena Z. and Vasiljević, Perica and Najman, Stevo",
year = "2012",
abstract = "Simulated body fluid (SBF) is an artificial fluid which has ionic composition and ionic concentration similar to human blood plasma. Purpose: This paper compares the interaction between the nanomaterial containing calcium phosphate/poly-dl-lactide-co-glycolide (N-CP/PLGA) and SBF, in order to investigate whether and to what extent inorganic ionic composition of human blood plasma leads to the aforementioned changes in the material. Methods: N-CP/PLGA was incubated for 1, 2, 3, and 5 weeks in SBF. The surface of the material was analyzed on SEM-EDS and FTIR spectrometer, while SBF was subjected to pH and electrical conductivity measurement. Results: Our results indicate that dissolution of the polymer component of the material N-CP/PLGA and precipitation of the material similar to hydroxyapatite on its surface are based on the morphologic changes seen in this material. Conclusions: The mechanism of the apatite formation on the bioceramic surface was intensively studied and was considered crucial in designing the new biomaterials. The results obtained in this work indicate that N-CP/PLGA may be a good candidate for application to bone regeneration.",
publisher = "Milano : Wichtig Publishing",
journal = "Journal of Applied Biomaterials and Functional Materials",
title = "Apatite formation on nanomaterial calcium phosphate/poly-DL-lactide-co-glycolide in simulated body fluid",
pages = "43-48",
doi = "10.5301/JABFM.2012.9274",
url = "https://hdl.handle.net/21.15107/rcub_dais_489"
}
Vukelić, M. Đ., Mitić, Ž., Miljković, M., Živković, J. M., Ignjatović, N., Uskoković, D., Živanov Čurlis, J. Z., Vasiljević, P.,& Najman, S.. (2012). Apatite formation on nanomaterial calcium phosphate/poly-DL-lactide-co-glycolide in simulated body fluid. in Journal of Applied Biomaterials and Functional Materials
Milano : Wichtig Publishing., 43-48.
https://doi.org/10.5301/JABFM.2012.9274
https://hdl.handle.net/21.15107/rcub_dais_489
Vukelić MĐ, Mitić Ž, Miljković M, Živković JM, Ignjatović N, Uskoković D, Živanov Čurlis JZ, Vasiljević P, Najman S. Apatite formation on nanomaterial calcium phosphate/poly-DL-lactide-co-glycolide in simulated body fluid. in Journal of Applied Biomaterials and Functional Materials. 2012;:43-48.
doi:10.5301/JABFM.2012.9274
https://hdl.handle.net/21.15107/rcub_dais_489 .
Vukelić, Marija Đ., Mitić, Žarko, Miljković, Miroslav, Živković, Jelena M., Ignjatović, Nenad, Uskoković, Dragan, Živanov Čurlis, Jelena Z., Vasiljević, Perica, Najman, Stevo, "Apatite formation on nanomaterial calcium phosphate/poly-DL-lactide-co-glycolide in simulated body fluid" in Journal of Applied Biomaterials and Functional Materials (2012):43-48,
https://doi.org/10.5301/JABFM.2012.9274 .,
https://hdl.handle.net/21.15107/rcub_dais_489 .
7
6
9

Interaction of biomaterial containing calcium hydroxyapatite/poly-l-lactide with simulated body fluid

Vukelić, Marija Đ.; Mitić, Žarko; Miljković, Miroslav; Živković, Jelena M.; Ignjatović, Nenad; Uskoković, Dragan

(Niš : University of Niš, Faculty of Medicine; Department of the Serbian Medical Society Niš, 2011)

TY  - JOUR
AU  - Vukelić, Marija Đ.
AU  - Mitić, Žarko
AU  - Miljković, Miroslav
AU  - Živković, Jelena M.
AU  - Ignjatović, Nenad
AU  - Uskoković, Dragan
PY  - 2011
UR  - https://dais.sanu.ac.rs/123456789/701
AB  - The purpose of biomaterials is to replace a part or a function of the body in a safe, physiologically and economically acceptable way. The process of the reconstruction of bone defects has always been a big problem in orthopedics and maxillofacial surgery. Since hydroxyapatite (HAp) was detected as a component, the predominant constituent and the integral element of Mammalian bones, the development of the phospate ceramics as potential materials for implantation was enabled. This study investigated whether and in which way biomaterial calcium hydroxyapatite/poly-L-lactide (HAp/PLLA) interacts with the ionic composition of the human plasma. The simulated body fluid (SBF) is an artificial fluid that has the ionic composition and ionic concentration similar to the human blood plasma. HAp/PLLA was incubated for 1, 2, 3 and 5 weeks in SBF. The surfaces of both treated and untreated materials were analyzed on a scanning electron microscopy (SEM), and were also exposed to the energy dispersive X-ray spectroscopy (EDS), while SBF was submitted to the measuring of pH and electrical conductivity. However, our results indicate that the degradational changes of the material HAp/PLLA in SBF start from the surface of the treated material and that observed changes are the consequence of dissolution of its polymer component and the precipitation of the material similar to hydroxyapatite on its surface. This material shows good characteristics that place it among good candidates for the application in orthopedics and maxillofacial surgery.
PB  - Niš : University of Niš, Faculty of Medicine; Department of  the Serbian Medical Society Niš
T2  - Acta medica Medianae
T1  - Interaction of biomaterial containing calcium hydroxyapatite/poly-l-lactide with simulated body fluid
SP  - 35
EP  - 39
VL  - 50
IS  - 4
DO  - 10.5633/amm.2011.0406
UR  - https://hdl.handle.net/21.15107/rcub_dais_701
ER  - 
@article{
author = "Vukelić, Marija Đ. and Mitić, Žarko and Miljković, Miroslav and Živković, Jelena M. and Ignjatović, Nenad and Uskoković, Dragan",
year = "2011",
abstract = "The purpose of biomaterials is to replace a part or a function of the body in a safe, physiologically and economically acceptable way. The process of the reconstruction of bone defects has always been a big problem in orthopedics and maxillofacial surgery. Since hydroxyapatite (HAp) was detected as a component, the predominant constituent and the integral element of Mammalian bones, the development of the phospate ceramics as potential materials for implantation was enabled. This study investigated whether and in which way biomaterial calcium hydroxyapatite/poly-L-lactide (HAp/PLLA) interacts with the ionic composition of the human plasma. The simulated body fluid (SBF) is an artificial fluid that has the ionic composition and ionic concentration similar to the human blood plasma. HAp/PLLA was incubated for 1, 2, 3 and 5 weeks in SBF. The surfaces of both treated and untreated materials were analyzed on a scanning electron microscopy (SEM), and were also exposed to the energy dispersive X-ray spectroscopy (EDS), while SBF was submitted to the measuring of pH and electrical conductivity. However, our results indicate that the degradational changes of the material HAp/PLLA in SBF start from the surface of the treated material and that observed changes are the consequence of dissolution of its polymer component and the precipitation of the material similar to hydroxyapatite on its surface. This material shows good characteristics that place it among good candidates for the application in orthopedics and maxillofacial surgery.",
publisher = "Niš : University of Niš, Faculty of Medicine; Department of  the Serbian Medical Society Niš",
journal = "Acta medica Medianae",
title = "Interaction of biomaterial containing calcium hydroxyapatite/poly-l-lactide with simulated body fluid",
pages = "35-39",
volume = "50",
number = "4",
doi = "10.5633/amm.2011.0406",
url = "https://hdl.handle.net/21.15107/rcub_dais_701"
}
Vukelić, M. Đ., Mitić, Ž., Miljković, M., Živković, J. M., Ignjatović, N.,& Uskoković, D.. (2011). Interaction of biomaterial containing calcium hydroxyapatite/poly-l-lactide with simulated body fluid. in Acta medica Medianae
Niš : University of Niš, Faculty of Medicine; Department of  the Serbian Medical Society Niš., 50(4), 35-39.
https://doi.org/10.5633/amm.2011.0406
https://hdl.handle.net/21.15107/rcub_dais_701
Vukelić MĐ, Mitić Ž, Miljković M, Živković JM, Ignjatović N, Uskoković D. Interaction of biomaterial containing calcium hydroxyapatite/poly-l-lactide with simulated body fluid. in Acta medica Medianae. 2011;50(4):35-39.
doi:10.5633/amm.2011.0406
https://hdl.handle.net/21.15107/rcub_dais_701 .
Vukelić, Marija Đ., Mitić, Žarko, Miljković, Miroslav, Živković, Jelena M., Ignjatović, Nenad, Uskoković, Dragan, "Interaction of biomaterial containing calcium hydroxyapatite/poly-l-lactide with simulated body fluid" in Acta medica Medianae, 50, no. 4 (2011):35-39,
https://doi.org/10.5633/amm.2011.0406 .,
https://hdl.handle.net/21.15107/rcub_dais_701 .
3