The Effect of Bacterial Cellulose Based Hydroxyapatite (BC-HAp) Nanocomposite on Bone Formation in Critical Sized Calvarial Defects in Rats

Year 2022, Volume: 12 Issue: 2, 242 - 250, 24.12.2022

Aysan Lektemür Alpan Nazime Dogan Tuğba Hilal Denizli Özlem Özmen

Abstract

In this study, it was aimed to evaluate the potential bone regeneration effect of bacterial cellulose-hydroxyapatite (BC-HAp) composite in calvarial defects of critical size in rats. BC-HAp obtained from Komagataibacter xylinus S4 isolate was examined under a scanning electron microscope (SEM), and the concentration of Ca and P ions in its content was determined. BC-HAp obtained from calvarial defects in rats was freeze-dried and applied. Samples taken at the end of the 4th and 8th weeks were examined histopathologically. According to SEM results, BC fibers were in thin bundles and the fibril diameter was determined as 42.11. As HAp is included in the BC pellicle, high levels of Ca and P elements were detected in its content. At the end of the in-vivo experiments, no bone formation was found in the 4th week. Uniform connective tissue formation was observed in the BS-HAp group. At the end of the 8th week, new bone areas were observed in the BS-HAp group adjacent to the biomaterial. When BS-HAp obtained from Komagataibacter xylinus S4 isolate was used as a biomaterial, it induced new bone formation at 8 weeks

Keywords

Bacterial cellulose, biomaterial, Bacterial cellulose, Biomaterial, Hydroxyapatite, Bone regeneration, rat

Ratlarda Oluşturulan Kritik Boyutlu Kalvaryal Defektlerde Bakteriyel Selüloz Temelli Hidroksiapatit (BS-HAp) Nanokompozitinin Kemik Oluşumu Üzerine Etkisi

Abstract

Bu çalışmada, sıçanlarda kritik boyuttaki kalvaryal defektlerde bakteriyel selüloz-hidroksiapatit (BS-HAp) kompozitinin kemik rejenerasyonundaki potansiyelinin değerlendirilmesi amaçlanmıştır. Komagataibacter xylinus S4 izolatından elde edilen BS-HAp taramalı elektron mikroskobunda (SEM) incelenerek içeriğindeki Ca ve P iyonlarının yoğunluğu tespit edilmiştir. Ratlarda oluşturulan kalvaryal defektlere elde edilen BS-HAp dondurulup kurutularak uygulanmıştır. 4. ve 8. haftanın sonunda alınan örnekler histopatolojik olarak incelenmiştir. SEM sonuçlarına göre BS lifleri, ince demetler halinde olup fibril çapı 42,11olarak tespit edilmiştir. HAp, BS pelikülüne dahil olarak içeriğinde yüksek oranda Ca ve P elementleri saptanmıştır. Yapılan in-vivo deneylerin sonunda 4. Haftada herhangi bir kemik oluşumuna rastlanmamıştır. BS-HAp grubunda düzgün bağ doku oluşumu gözlenmiştir. 8. haftanın sonunda BS-HAp grubunda biyomateryal komşuluğunda yeni kemik alanları izlenmiştir. Komagataibacter xylinus S4 izolatından elde edilen BS-HAp biyomateryal olarak kullanıldığında 8. haftada yeni kemik oluşumunu indüklemiştir

Keywords

Bakteriyel selüloz, biyomateryal, hidroksiapatit, kemik rejenerasyonu, Bacterial cellulose, Biomaterial, Hydroxyapatite, Bone regeneration

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