TY  - JOUR
AU  - Jokanović, Vukoman
AU  - Čolović, Božana
AU  - Marković, Dejan
AU  - Petrović, Milan
AU  - Soldatović, Ivan
AU  - Antonijević, Đorđe
AU  - Milosavljević, Petar
AU  - Sjerobabin, Nikola
AU  - Sopta, Jelena
PY  - 2017
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2187
AB  - This study examined the potential of a new porous calcium hydroxyapatite scaffold covered with poly (lactide-co-glycolide) (PLGA) as a bone substitute, identifying its advantages over Geistlich Bio-Oss (R), considered the gold standard, in in vivo biofunctionality investigations. Structural and morphological properties of the new scaffold were analyzed by scanning electron and atomic force microscopy. The biofunctionality assays were performed on New Zealand white rabbits using new scaffold for filling full-thickness defects of critical size. The evaluated parameters were: the presence of macrophages, giant cells, monoocytes, plasma cells, granulocytes, neo-angiogenesis, fibroplasia, and the percentage of mineralization. Parallel biofunctionality assays were performed using Geistlich Bio-Oss (R). The appearance of bone defects 12 weeks after the new scaffold implantation showed the presence of a small number of typical immune response cells. Furthermore, significantly reduced number of capillary buds, low intensity of fibroplasia and high degree of mineralization in a lamellar pattern indicated that the inflammation process has been almost completely overcome and that the new bone formed was in the final phase of remodeling. All biofunctionality assays proved the new scaffold's suitability as a bone substitute for applications in maxillofacial surgery. It showed numerous biological advantages over Geistlich Bio-Oss (R) which was reflected mainly as a lower number of giant cells surrounding implanted material and higher degree of mineralization in new formed bone.
PB  - Walter De Gruyter Gmbh, Berlin
T2  - Biomedical Engineering - Biomedizinische Technik
T1  - Extraordinary biological properties of a new calcium hydroxyapatite/poly(lactide-co-glycolide)-based scaffold confirmed by in vivo investigation
VL  - 62
IS  - 3
SP  - 295
EP  - 306
DO  - 10.1515/bmt-2015-0164
ER  - 

@article{
author = "Jokanović, Vukoman and Čolović, Božana and Marković, Dejan and Petrović, Milan and Soldatović, Ivan and Antonijević, Đorđe and Milosavljević, Petar and Sjerobabin, Nikola and Sopta, Jelena",
year = "2017",
abstract = "This study examined the potential of a new porous calcium hydroxyapatite scaffold covered with poly (lactide-co-glycolide) (PLGA) as a bone substitute, identifying its advantages over Geistlich Bio-Oss (R), considered the gold standard, in in vivo biofunctionality investigations. Structural and morphological properties of the new scaffold were analyzed by scanning electron and atomic force microscopy. The biofunctionality assays were performed on New Zealand white rabbits using new scaffold for filling full-thickness defects of critical size. The evaluated parameters were: the presence of macrophages, giant cells, monoocytes, plasma cells, granulocytes, neo-angiogenesis, fibroplasia, and the percentage of mineralization. Parallel biofunctionality assays were performed using Geistlich Bio-Oss (R). The appearance of bone defects 12 weeks after the new scaffold implantation showed the presence of a small number of typical immune response cells. Furthermore, significantly reduced number of capillary buds, low intensity of fibroplasia and high degree of mineralization in a lamellar pattern indicated that the inflammation process has been almost completely overcome and that the new bone formed was in the final phase of remodeling. All biofunctionality assays proved the new scaffold's suitability as a bone substitute for applications in maxillofacial surgery. It showed numerous biological advantages over Geistlich Bio-Oss (R) which was reflected mainly as a lower number of giant cells surrounding implanted material and higher degree of mineralization in new formed bone.",
publisher = "Walter De Gruyter Gmbh, Berlin",
journal = "Biomedical Engineering - Biomedizinische Technik",
title = "Extraordinary biological properties of a new calcium hydroxyapatite/poly(lactide-co-glycolide)-based scaffold confirmed by in vivo investigation",
volume = "62",
number = "3",
pages = "295-306",
doi = "10.1515/bmt-2015-0164"
}

Jokanović, V., Čolović, B., Marković, D., Petrović, M., Soldatović, I., Antonijević, Đ., Milosavljević, P., Sjerobabin, N.,& Sopta, J.. (2017). Extraordinary biological properties of a new calcium hydroxyapatite/poly(lactide-co-glycolide)-based scaffold confirmed by in vivo investigation. in Biomedical Engineering - Biomedizinische Technik
Walter De Gruyter Gmbh, Berlin., 62(3), 295-306.
https://doi.org/10.1515/bmt-2015-0164

Jokanović V, Čolović B, Marković D, Petrović M, Soldatović I, Antonijević Đ, Milosavljević P, Sjerobabin N, Sopta J. Extraordinary biological properties of a new calcium hydroxyapatite/poly(lactide-co-glycolide)-based scaffold confirmed by in vivo investigation. in Biomedical Engineering - Biomedizinische Technik. 2017;62(3):295-306.
doi:10.1515/bmt-2015-0164 .

Jokanović, Vukoman, Čolović, Božana, Marković, Dejan, Petrović, Milan, Soldatović, Ivan, Antonijević, Đorđe, Milosavljević, Petar, Sjerobabin, Nikola, Sopta, Jelena, "Extraordinary biological properties of a new calcium hydroxyapatite/poly(lactide-co-glycolide)-based scaffold confirmed by in vivo investigation" in Biomedical Engineering - Biomedizinische Technik, 62, no. 3 (2017):295-306,
https://doi.org/10.1515/bmt-2015-0164 . .

TY  - JOUR
AU  - Sjerobabin, Nikola
AU  - Čolović, Božana
AU  - Petrović, Milan
AU  - Marković, Dejan
AU  - Živković, Slavoljub
AU  - Jokanović, Vukoman
PY  - 2016
UR  - https://smile.stomf.bg.ac.rs/handle/123456789/2162
AB  - Introduction: Biodegradable porous scaffolds are found to be very promising bone substitutes, acting as a temporary physical support to guide new tissue regeneration, until the entire scaffold is totally degraded and replaced by the new tissue. Objective The aim of this study was to investigate cytotoxicity of a synthesized calcium hydroxyapatite-based scaffold, named ALBO-OS, with high porosity and optimal topology. Methods The ALBO-OS scaffold was synthesized by the method of polymer foam template. The analysis of pore geometry and scaffold walls' topography was made by scanning electron microscope (SEM). The biological investigations assumed the examinations of ALBO-OS cytotoxicity to mouse L929 fibroblasts, using 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromidefor (MTT) and lactate dehydrogenase (LDH) tests and inverse phase microscopy. Results The SEM analysis showed high porosity with fair pore distribution and interesting morphology from the biological standpoint. The biological investigations showed that the material is not cytotoxic to L929 cells. Comparison of ALBO-OS with Bio-Oss, as the global gold standard as a bone substitute, showed similar results in MTT test, while LDH test showed significantly higher rate of cell multiplication with ALBO-OS. Conclusion The scaffold design from the aspect of pore size, distribution, and topology seems to be very convenient for cell adhesion and occupation, which makes it a promising material as a bone substitute. The results of biological assays proved that ALBO-OS is not cytotoxic for L929 fibroblasts. In comparison with Bio-Oss, similar or even better results were obtained.
AB  - Uvod: Porozni biodegradabilni nosači su se pokazali kao dobri zamenici kosti jer deluju kao privremena fizička potpora za usmerenu regeneraciju tkiva dok se čitav nosač potpuno ne razgradi i zameni novim tkivom. Cilj rada Cilj ovog rada je bio da se ispita citotoksičnost nosača tkiva na bazi kalcijum-hidroksiapatita, visoke poroznosti i optimalne topologije, nazvanog ALBO-OS. Metode rada Zamenik kosti ALBO-OS je sintetisan metodom matrice napravljene od polimerne pene. Geometrija pora i zidova nosača analizirane su pomoću skenirajuće elektronske mikroskopije (SEM). Biološka istraživanja izvedena su ispitivanjem citotoksičnosti ALBO-OS-a na mišjim fibroblastima L929 pomoću MTT i LDH testova i fazno kontrastne mikroskopije. Rezultati SEM analiza je pokazala veliku i ravnomernu poroznost i zanimljivu morfologiju sa biološkog stanovišta. Biološka istraživanja pokazala su da materijal nije citotoksičan. Poređenjem materijala ALBO-OS i Bio-Oss, koji je, globalno, zlatni standard među zamenicima kosti, dobijeni su slični rezultati na MTT testu, dok su rezulati LDH testa pokazali značajno veći broj ćelijskih deoba u kontaktu sa ALBO-OS-om. Zaključak Dizajn nosača sa stanovišta raspodele veličine pora i topologije je veoma pogodan za adheziju i naseljavanje ćelija, zbog čega ima veliki potencijal kao zamenik kosti. Rezultati bioloških testova su pokazali da ALBO-OS nije citotoksičan za L929 fibroblaste. U poređenju sa materijalom Bio-Oss, dobijeni su slični ili bolji rezultati.
PB  - Srpsko lekarsko društvo, Beograd
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Cytotoxicity investigation of a new hydroxyapatite scaffold with improved structural design
T1  - Ispitivanje citotoksičnosti nosača na bazi hidroksiapatita s unapređenim strukturnim dizajnom
VL  - 144
IS  - 5-6
SP  - 280
EP  - 287
DO  - 10.2298/SARH1606280S
ER  - 

@article{
author = "Sjerobabin, Nikola and Čolović, Božana and Petrović, Milan and Marković, Dejan and Živković, Slavoljub and Jokanović, Vukoman",
year = "2016",
abstract = "Introduction: Biodegradable porous scaffolds are found to be very promising bone substitutes, acting as a temporary physical support to guide new tissue regeneration, until the entire scaffold is totally degraded and replaced by the new tissue. Objective The aim of this study was to investigate cytotoxicity of a synthesized calcium hydroxyapatite-based scaffold, named ALBO-OS, with high porosity and optimal topology. Methods The ALBO-OS scaffold was synthesized by the method of polymer foam template. The analysis of pore geometry and scaffold walls' topography was made by scanning electron microscope (SEM). The biological investigations assumed the examinations of ALBO-OS cytotoxicity to mouse L929 fibroblasts, using 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromidefor (MTT) and lactate dehydrogenase (LDH) tests and inverse phase microscopy. Results The SEM analysis showed high porosity with fair pore distribution and interesting morphology from the biological standpoint. The biological investigations showed that the material is not cytotoxic to L929 cells. Comparison of ALBO-OS with Bio-Oss, as the global gold standard as a bone substitute, showed similar results in MTT test, while LDH test showed significantly higher rate of cell multiplication with ALBO-OS. Conclusion The scaffold design from the aspect of pore size, distribution, and topology seems to be very convenient for cell adhesion and occupation, which makes it a promising material as a bone substitute. The results of biological assays proved that ALBO-OS is not cytotoxic for L929 fibroblasts. In comparison with Bio-Oss, similar or even better results were obtained., Uvod: Porozni biodegradabilni nosači su se pokazali kao dobri zamenici kosti jer deluju kao privremena fizička potpora za usmerenu regeneraciju tkiva dok se čitav nosač potpuno ne razgradi i zameni novim tkivom. Cilj rada Cilj ovog rada je bio da se ispita citotoksičnost nosača tkiva na bazi kalcijum-hidroksiapatita, visoke poroznosti i optimalne topologije, nazvanog ALBO-OS. Metode rada Zamenik kosti ALBO-OS je sintetisan metodom matrice napravljene od polimerne pene. Geometrija pora i zidova nosača analizirane su pomoću skenirajuće elektronske mikroskopije (SEM). Biološka istraživanja izvedena su ispitivanjem citotoksičnosti ALBO-OS-a na mišjim fibroblastima L929 pomoću MTT i LDH testova i fazno kontrastne mikroskopije. Rezultati SEM analiza je pokazala veliku i ravnomernu poroznost i zanimljivu morfologiju sa biološkog stanovišta. Biološka istraživanja pokazala su da materijal nije citotoksičan. Poređenjem materijala ALBO-OS i Bio-Oss, koji je, globalno, zlatni standard među zamenicima kosti, dobijeni su slični rezultati na MTT testu, dok su rezulati LDH testa pokazali značajno veći broj ćelijskih deoba u kontaktu sa ALBO-OS-om. Zaključak Dizajn nosača sa stanovišta raspodele veličine pora i topologije je veoma pogodan za adheziju i naseljavanje ćelija, zbog čega ima veliki potencijal kao zamenik kosti. Rezultati bioloških testova su pokazali da ALBO-OS nije citotoksičan za L929 fibroblaste. U poređenju sa materijalom Bio-Oss, dobijeni su slični ili bolji rezultati.",
publisher = "Srpsko lekarsko društvo, Beograd",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Cytotoxicity investigation of a new hydroxyapatite scaffold with improved structural design, Ispitivanje citotoksičnosti nosača na bazi hidroksiapatita s unapređenim strukturnim dizajnom",
volume = "144",
number = "5-6",
pages = "280-287",
doi = "10.2298/SARH1606280S"
}

Sjerobabin, N., Čolović, B., Petrović, M., Marković, D., Živković, S.,& Jokanović, V.. (2016). Cytotoxicity investigation of a new hydroxyapatite scaffold with improved structural design. in Srpski arhiv za celokupno lekarstvo
Srpsko lekarsko društvo, Beograd., 144(5-6), 280-287.
https://doi.org/10.2298/SARH1606280S

Sjerobabin N, Čolović B, Petrović M, Marković D, Živković S, Jokanović V. Cytotoxicity investigation of a new hydroxyapatite scaffold with improved structural design. in Srpski arhiv za celokupno lekarstvo. 2016;144(5-6):280-287.
doi:10.2298/SARH1606280S .

Sjerobabin, Nikola, Čolović, Božana, Petrović, Milan, Marković, Dejan, Živković, Slavoljub, Jokanović, Vukoman, "Cytotoxicity investigation of a new hydroxyapatite scaffold with improved structural design" in Srpski arhiv za celokupno lekarstvo, 144, no. 5-6 (2016):280-287,
https://doi.org/10.2298/SARH1606280S . .