Amaç: Bu
çalışmanın amacı lokal rifamisin uygulamasının kemik iyileşmesi sırasında BMP–2
salınımı üzerine etkisinin değerlendirilmesidir.
Materyal
ve method:
Rat mandibula angulus bölgesinde standart olarak 5 mm çapında kritik boyutta
kemik defektleri oluşturulmuştur. Kontrol grubunda (8 rat) defektlere herhangi
bir uygulama yapılmamıştır. Birinci deney grubunda (8 rat) defekt bölgesi
rifamisin solüsyonu ile irrige edildikten sonra, defekt bölgesine 1, 3 ve 7.
günlerde 25 mg rifamisin solüsyonu enjekte edilmiştir. İkinci deney grubunda (8
rat) defekt bölgesi 25 mg rifamisin solüsyonu ile karıştırılmış gelatin sponge
ile greftlenmiştir. Cerrahiden 21 gün sonra ratlar sakrifiye edilmiştir. Defekt
bölgesinden hem immünhistokimyasal analiz (kemik morfogenetik protein –2
antibody) için hem de histomorfometrik analiz için histolojik kesitler
hazırlanmıştır. Elde edilen verilerin analizi Mann Whitney U ve Kruskall Wallis
testi kullanılarak yapılmıştır.
Bulgular: Deney
grubunda kontrol grubuna göre ortalama yeni kemik formasyonu, osteoblast sayısı
ve yeni damar oluşum sayısında artış olduğu görülmüştür. Her iki deney grubunda
da anti–bmp–2 ile işaretlenmenin (hücre sayma) kontrol grubuna göre daha fazla
olduğu görülmüştür.
Sonuç: Kritik
boyutta kemik defektlerine lokal olarak rifamisin uygulamasının BMP–2 salınımı
üzerine pozitif etkileri olduğu tespit edilmiştir.
Objectives:
The aim of this study was to evaluate effect of local rifamycin application on
BMP-2 expression and bone healing.
Materials and Methods:
A standardized 5.0-mm- diameter critical size bone defect was created mandible
angulus region. In the control group (8 rats) defects were left empty. In the
Group 1 (n=8 rats) defect was irrigated with rifamycin solution and 25 mg
rifamycin solution injected defect area at 1, 3, 7 days after surgery. In the
group 2 (n=8 rats) defects were grafted with a gelatin sponge mixed 25 mg
rifamycin solution. Rats were sacrificed at 21 days after surgery. Histological
slides were prepared from defect site for both immunohistochemical analysis
(bone morphogenetic protein-2 (BMP-2) antibody) and histomorphometric analysis.
Data were analyzed using Mann Whitney U and Kruskall Wallis test.
Results:
The average new bone formation, number of osteoblast and new vessel formation
count were increased more in both of experimental groups in comparison with
control group. Anti-BMP-2 labelling (Cell count) was increased more in both of
experimental groups in comparison with control group.
Conclusion:
Local rifamycin application has positive effects on BMP-2 expression and bone regeneration
at critical sized bone defects.
Subjects | Health Care Administration |
---|---|
Journal Section | Original Research Articles |
Authors | |
Publication Date | August 31, 2017 |
Submission Date | October 23, 2017 |
Published in Issue | Year 2017 |
Cumhuriyet Dental Journal (Cumhuriyet Dent J, CDJ) is the official publication of Cumhuriyet University Faculty of Dentistry. CDJ is an international journal dedicated to the latest advancement of dentistry. The aim of this journal is to provide a platform for scientists and academicians all over the world to promote, share, and discuss various new issues and developments in different areas of dentistry. First issue of the Journal of Cumhuriyet University Faculty of Dentistry was published in 1998. In 2010, journal's name was changed as Cumhuriyet Dental Journal. Journal’s publication language is English.
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