TY  - JOUR
AU  - Milutinović-Smiljanić, Sanja
AU  - Antonijević, Đorđe
AU  - Mićić, Milutin
AU  - Biočanin, Vladimir
AU  - Sjerobabin, Nikola
AU  - Petrović, Božana
AU  - Danilović, Vesna
AU  - Jokanović, Vukoman R.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11221
AB  - Background/Aim. The materials used nowadays for bone replacement do not fully meet the requirements for complete regeneration, which is why new ones are being tested. Despite numerous attempts to improve bone tissue regeneration, no fulfilling material has been found yet. This study investigated the influence of poly-lactide-co-glycolide (PLGA) and polyethyleneimine (PEI) as coatings for hydroxyapatite (HAP) bone carriers on bone tissue regenerative potential in rabbits? calvarial defect. Methods. Calvarial defects measuring 6 mm in diameter were made in 19 skeletally mature rabbits. Defects were filled with one of the following materials: PLGA coated HAP (HAP + PLGA), PEI coated HAP (HAP + PEI), and bovine HAP ? Bio-Oss? (positive control). Unfilled defects represented negative control. Histological analysis was performed in order to determine the inflammatory response of the host tissue. The formation of the new bone was evaluated using histomorphometric analysis. All analyses have been conducted in samples obtained 3, 6, and 9 weeks after implantation. Results. Three weeks post-implantation, a trend toward increased healing in the HAP + PLGA group compared to other investigated materials was noticed, with no statistically significant difference between the study groups (p > 0.05). However, after 6 and 9 weeks, significant healing was observed in favor of the HAP coated with PLGA compared to other groups (p
AB  - Uvod/Cilj. Materijali koji se u današnje vreme koriste za nadoknadu koštanog tkiva ne dovode do kompletne regeneracije, zbog čega se ispituju novi. Uprkos mnogobrojnim pokušajima da se poboljša regeneracija koštanog tkiva, još uvek nije pronađen materijal koji ispunjava sve kriterijume. Cilj rada bio je da se utvrdi uticaj poli(laktid-ko-glikolida) (PLGA) i polietilenimina (PEI), kao premaza za oblaganje hidroksiapatita (HAP), na regenerativni potencijal koštanog tkiva u defektu kalvarije zeca. Metode. Kod 19 zečeva „zrelog” skeleta načinjeni su defekti kalvarije dijametra 6 mm. Defekti su potom ispunjeni jednim od sledećih materijala: HAP obložen PLGA (HAP + PLGA), HAP obložen PEI (HAP + PEI) i goveđi HAP – Bio-Oss® (pozitivna kontrola). Prazni defekti su predstavljali negativnu kontrolu. Inflamacijska reakcija tkiva domaćina je ispitana histološkom analizom. Formiranje nove kosti je procenjivano histomorfometrijskom analizom. Analizirani su uzorci dobijeni 3, 6 i 9 nedelja nakon implantacije. Rezultati. Tri nedelje nakon implantacije, uočena je tendencija boljeg zarastanja u HAP + PLGA grupi, bez statistički značajne razlike između ispitivanih grupa (p > 0.05). Međutim, 6 i 9 nedelja nakon implantacije, primećeno je značajno formiranje koštanog tkiva u korist HAP + PLGA grupe (p < 0,05). Oblaganje HAP sa PLGA dovelo je do boljeg koštanog zarastanja u poređenju sa HAP+PEI i Bio-Oss®. Zaključak. U pogledu stimulisanja osteogeneze u rekonstruktivnoj hirurgiji kostiju, PLGA je pokazao veći potencijal prekrivanja defekta od PEI.
T2  - Vojnosanitetski pregled
T1  - The influence of various coatings of hydroxyapatite bone carrier on the success of bone regeneration in rabbit calvarial defects: Histomorphometric and histological analysis
T1  - Uticaj različitih materijala koji oblažu hidroksiapatit koštanog nosača na uspeh regeneracije koštanih defekta kalvarije zeca: histomorfometrijska i histološka analiza
VL  - 79
IS  - 10
SP  - 1025
EP  - 1034
DO  - 10.2298/VSP210513072M
ER  - 

@article{
author = "Milutinović-Smiljanić, Sanja and Antonijević, Đorđe and Mićić, Milutin and Biočanin, Vladimir and Sjerobabin, Nikola and Petrović, Božana and Danilović, Vesna and Jokanović, Vukoman R.",
year = "2022",
abstract = "Background/Aim. The materials used nowadays for bone replacement do not fully meet the requirements for complete regeneration, which is why new ones are being tested. Despite numerous attempts to improve bone tissue regeneration, no fulfilling material has been found yet. This study investigated the influence of poly-lactide-co-glycolide (PLGA) and polyethyleneimine (PEI) as coatings for hydroxyapatite (HAP) bone carriers on bone tissue regenerative potential in rabbits? calvarial defect. Methods. Calvarial defects measuring 6 mm in diameter were made in 19 skeletally mature rabbits. Defects were filled with one of the following materials: PLGA coated HAP (HAP + PLGA), PEI coated HAP (HAP + PEI), and bovine HAP ? Bio-Oss? (positive control). Unfilled defects represented negative control. Histological analysis was performed in order to determine the inflammatory response of the host tissue. The formation of the new bone was evaluated using histomorphometric analysis. All analyses have been conducted in samples obtained 3, 6, and 9 weeks after implantation. Results. Three weeks post-implantation, a trend toward increased healing in the HAP + PLGA group compared to other investigated materials was noticed, with no statistically significant difference between the study groups (p > 0.05). However, after 6 and 9 weeks, significant healing was observed in favor of the HAP coated with PLGA compared to other groups (p, Uvod/Cilj. Materijali koji se u današnje vreme koriste za nadoknadu koštanog tkiva ne dovode do kompletne regeneracije, zbog čega se ispituju novi. Uprkos mnogobrojnim pokušajima da se poboljša regeneracija koštanog tkiva, još uvek nije pronađen materijal koji ispunjava sve kriterijume. Cilj rada bio je da se utvrdi uticaj poli(laktid-ko-glikolida) (PLGA) i polietilenimina (PEI), kao premaza za oblaganje hidroksiapatita (HAP), na regenerativni potencijal koštanog tkiva u defektu kalvarije zeca. Metode. Kod 19 zečeva „zrelog” skeleta načinjeni su defekti kalvarije dijametra 6 mm. Defekti su potom ispunjeni jednim od sledećih materijala: HAP obložen PLGA (HAP + PLGA), HAP obložen PEI (HAP + PEI) i goveđi HAP – Bio-Oss® (pozitivna kontrola). Prazni defekti su predstavljali negativnu kontrolu. Inflamacijska reakcija tkiva domaćina je ispitana histološkom analizom. Formiranje nove kosti je procenjivano histomorfometrijskom analizom. Analizirani su uzorci dobijeni 3, 6 i 9 nedelja nakon implantacije. Rezultati. Tri nedelje nakon implantacije, uočena je tendencija boljeg zarastanja u HAP + PLGA grupi, bez statistički značajne razlike između ispitivanih grupa (p > 0.05). Međutim, 6 i 9 nedelja nakon implantacije, primećeno je značajno formiranje koštanog tkiva u korist HAP + PLGA grupe (p < 0,05). Oblaganje HAP sa PLGA dovelo je do boljeg koštanog zarastanja u poređenju sa HAP+PEI i Bio-Oss®. Zaključak. U pogledu stimulisanja osteogeneze u rekonstruktivnoj hirurgiji kostiju, PLGA je pokazao veći potencijal prekrivanja defekta od PEI.",
journal = "Vojnosanitetski pregled",
title = "The influence of various coatings of hydroxyapatite bone carrier on the success of bone regeneration in rabbit calvarial defects: Histomorphometric and histological analysis, Uticaj različitih materijala koji oblažu hidroksiapatit koštanog nosača na uspeh regeneracije koštanih defekta kalvarije zeca: histomorfometrijska i histološka analiza",
volume = "79",
number = "10",
pages = "1025-1034",
doi = "10.2298/VSP210513072M"
}

Milutinović-Smiljanić, S., Antonijević, Đ., Mićić, M., Biočanin, V., Sjerobabin, N., Petrović, B., Danilović, V.,& Jokanović, V. R.. (2022). The influence of various coatings of hydroxyapatite bone carrier on the success of bone regeneration in rabbit calvarial defects: Histomorphometric and histological analysis. in Vojnosanitetski pregled, 79(10), 1025-1034.
https://doi.org/10.2298/VSP210513072M

Milutinović-Smiljanić S, Antonijević Đ, Mićić M, Biočanin V, Sjerobabin N, Petrović B, Danilović V, Jokanović VR. The influence of various coatings of hydroxyapatite bone carrier on the success of bone regeneration in rabbit calvarial defects: Histomorphometric and histological analysis. in Vojnosanitetski pregled. 2022;79(10):1025-1034.
doi:10.2298/VSP210513072M .

Milutinović-Smiljanić, Sanja, Antonijević, Đorđe, Mićić, Milutin, Biočanin, Vladimir, Sjerobabin, Nikola, Petrović, Božana, Danilović, Vesna, Jokanović, Vukoman R., "The influence of various coatings of hydroxyapatite bone carrier on the success of bone regeneration in rabbit calvarial defects: Histomorphometric and histological analysis" in Vojnosanitetski pregled, 79, no. 10 (2022):1025-1034,
https://doi.org/10.2298/VSP210513072M . .

TY  - JOUR
AU  - Jokanović, Vukoman R.
AU  - Čolović, Božana M.
AU  - Marković, Dejan
AU  - Petrović, Milan
AU  - Soldatovic, Ivan
AU  - Antonijević, Đorđe
AU  - Milosavljević, Petar
AU  - Sjerobabin, Nikola
AU  - Sopta, Jelena
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1604
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 scaffolds 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.
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 R. and Čolović, Božana M. and Marković, Dejan and Petrović, Milan and Soldatovic, 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 scaffolds 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.",
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. R., Čolović, B. M., Marković, D., Petrović, M., Soldatovic, 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, 62(3), 295-306.
https://doi.org/10.1515/bmt-2015-0164

Jokanović VR, Čolović BM, Marković D, Petrović M, Soldatovic 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 R., Čolović, Božana M., Marković, Dejan, Petrović, Milan, Soldatovic, 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 M.
AU  - Petrović, Milan
AU  - Marković, Dejan
AU  - Zivkovic, Slavoljub
AU  - Jokanović, Vukoman R.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1264
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 wallstopography 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 (MU) 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.
T2  - Srpski arhiv za celokupno lekarstvo
T1  - Cytotoxicity investigation of a new hydroxyapatite scaffold with improved structural design
VL  - 144
IS  - 5-6
SP  - 280
EP  - 287
DO  - 10.2298/SARH1606280S
ER  - 

@article{
author = "Sjerobabin, Nikola and Čolović, Božana M. and Petrović, Milan and Marković, Dejan and Zivkovic, Slavoljub and Jokanović, Vukoman R.",
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 wallstopography 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 (MU) 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.",
journal = "Srpski arhiv za celokupno lekarstvo",
title = "Cytotoxicity investigation of a new hydroxyapatite scaffold with improved structural design",
volume = "144",
number = "5-6",
pages = "280-287",
doi = "10.2298/SARH1606280S"
}

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

Sjerobabin N, Čolović BM, Petrović M, Marković D, Zivkovic S, Jokanović VR. 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 M., Petrović, Milan, Marković, Dejan, Zivkovic, Slavoljub, Jokanović, Vukoman R., "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 . .