scholarly journals Effect of Flurbiprofen on Alveolar Bone Dynamics during Experimental Periodontitis in Dogs

1986 ◽  
Vol 40 (1) ◽  
pp. 291-310
Author(s):  
Ryoji Kataoka
Keyword(s):  
Alveolar Bone ◽  
Experimental Periodontitis ◽  
Bone Dynamics

scholarly journals Effect of Occlusal Trauma (Jiggling Force) in Experimental Periodontitis on Alveolar Bone Dynamics

1987 ◽  
Vol 41 (2) ◽  
pp. 541-549
Author(s):  
Kohzoh Kubota ◽  
Masatoshi Hitaka ◽  
Kazuo Yasumoto ◽  
Takashi Hayashikawa ◽  
Yohichiroh Soh ◽  
...  
Keyword(s):  
Alveolar Bone ◽  
Experimental Periodontitis ◽  
Bone Dynamics

3,4,5-Trihydroxybenzoic acid attenuates ligature-induced periodontal disease in Wistar rats.

2020 ◽  
Vol 19 ◽  
Author(s):  
Ozkan Karatas ◽  
Fikret Gevrek
Keyword(s):  
Bone Loss ◽  
Gallic Acid ◽  
Wistar Rats ◽  
Alveolar Bone ◽  
Alveolar Bone Loss ◽  
Collagenase Activity ◽  
Osteoblastic Activity ◽  
Cell Counts ◽  
Experimental Periodontitis ◽  
Anti Inflammatory

Background: 3,4,5-Trihydroxybenzoic acid, which is also known as gallic acid, is an anti-inflammatory agent who could provide beneficial effects in preventing periodontal inflammation. The present study aimed to evaluate the anti-inflammatory effects of gallic acid on experimental periodontitis in Wistar rats. Alveolar bone loss, osteoclastic activity, osteoblastic activity, and collagenase activity were also determined. Methods: 32 Wistar rats were used in the present study. Study groups were created as following: Healthy control (C,n=8) group; periodontitis (P,n=8) group; periodontitis and 30 mg/kg gallic acid administered group (G30,n=8); periodontitis and 60 mg/kg gallic acid administered group (G60,n=8). Experimental periodontitis was created by placing 4-0 silk sutures around the mandibular right first molar tooth. Morphological changes in alveolar bone were determined by stereomicroscopic evaluation. Mandibles were undergone histological evaluation. Matrix metalloproteinase (MMP)-8, tissue inhibitor of MMPs (TIMP)-1, bone morphogenetic protein (BMP)-2 expressions, tartrate-resistant acid phosphatase (TRAP) positive osteoclast cells, osteoblast, and inflammatory cell counts were determined. Results: Highest alveolar bone loss was observed in the periodontitis group. Both doses of gallic acid decreased alveolar bone loss compared to the P group. TRAP-positive osteoclast cell counts were higher in the P group, and gallic acid successfully lowered these counts. Osteoblast cells also increased in gallic acid administered groups. Inflammation in the P group was also higher than those of C, G30, and G60 groups supporting the role of gallic acid in preventing inflammation. 30 and 60 mg/kg doses of gallic acid decreased MMP-8 levels and increased TIMP-1 levels. BMP levels increased in gallic acid administered groups, similar to several osteoblasts. Conclusion: Present results revealed an anti-inflammatory effect of gallic acid, which was indicated by decreased alveolar bone loss and collagenase activity and increased osteoblastic activity.

scholarly journals Granulocyte colony-stimulating factor (G-CSF) mediates bone resorption in periodontitis

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hui Yu ◽  
Tianyi Zhang ◽  
Haibin Lu ◽  
Qi Ma ◽  
Dong Zhao ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Alveolar Bone ◽  
Bone Volume ◽  
Granulocyte Colony Stimulating Factor ◽  
Colony Stimulating Factor ◽  
Periodontal Tissues ◽  
Gingival Epithelial Cells ◽  
Trap Staining ◽  
Experimental Periodontitis ◽  
Stimulating Factor

Abstract Background Granulocyte colony-stimulating factor (G-CSF) is an important immune factor that mediates bone metabolism by regulating the functions of osteoclasts and osteoblasts. Bone loss is a serious and progressive result of periodontitis. However, the mechanisms underlying the effects of G-CSF on periodontal inflammation have yet not been completely elucidated. Here, we examined whether an anti-G-CSF antibody could inhibit bone resorption in a model of experimental periodontitis and investigated the local expression of G-CSF in periodontal tissues. Methods Experimental periodontitis was induced in mice using ligatures. The levels of G-CSF in serum and bone marrow were measured; immunofluorescence was then performed to analyze the localization and expression of G-CSF in periodontal tissues. Mice with periodontitis were administered anti-G-CSF antibody by tail vein injection to assess the inhibition of bone resorption. Three-dimensional reconstruction was performed to measure bone destruction‐related parameters via micro-computed tomography analysis. Immunofluorescence staining was used to investigate the presence of osteocalcin-positive osteoblasts; tartrate-resistant acid phosphatase (TRAP) staining was used to observe osteoclast activity in alveolar bone. Results The level of G-CSF in serum was significantly elevated in mice with periodontitis. Immunofluorescence analyses showed that G-CSF was mostly expressed in the cell membrane of gingival epithelial cells; this expression was enhanced in the periodontitis group. Additionally, systemic administration of anti-G-CSF antibody significantly inhibited alveolar bone resorption, as evidenced by improvements in bone volume/total volume, bone surface area/bone volume, trabecular thickness, trabecular spacing, and trabecular pattern factor values. Immunofluorescence analysis revealed an enhanced number of osteocalcin-positive osteoblasts, while TRAP staining revealed reduction of osteoclast activity. Conclusions G-CSF expression levels were significantly up-regulated in the serum and gingival epithelial cells. Together, anti-G-CSF antibody administration could alleviates alveolar bone resorption, suggesting that G-CSF may be one of the essential immune factors that mediate the bone loss in periodontitis.

scholarly journals SOCS-3 Regulates Alveolar Bone Loss in Experimental Periodontitis

2016 ◽  
Vol 95 (9) ◽  
pp. 1018-1025 ◽  
Author(s):  
E. Papathanasiou ◽  
A. Kantarci ◽  
A. Konstantinidis ◽  
H. Gao ◽  
T.E. Van Dyke
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Alveolar Bone Loss ◽  
Experimental Periodontitis

Humic Acid, a Polyphenolic Substance, Decreases Alveolar Bone Loss in Experimental Periodontitis in Rats

2019 ◽  
Vol 36 (4) ◽  
pp. 257-265
Author(s):  
Metin Çalışır ◽  
Aysun Akpınar ◽  
Ömer Poyraz ◽  
Fahrettin Göze ◽  
Ziynet Çınar
Keyword(s):  
Humic Acid ◽  
Bone Loss ◽  
Inflammatory Cell ◽  
Alveolar Bone ◽  
Alveolar Bone Loss ◽  
Inflammatory Cell Infiltration ◽  
Cell Infiltration ◽  
Enzyme Linked Immunosorbent Assay ◽  
Local Administration ◽  
Experimental Periodontitis

The purpose of this study was to evaluate the biochemical, morphometric, and histopathological changes associated with experimental periodontitis in rats in response to local administration of humic acid. Thirty-eight Wistar rats were divided into 5 experimental groups: nonligated (NL) group, ligature-only (LO) group, and ligature + local administration of humic acid (20, 80, and 150 mg/kg body weight per day for 15 days, respectively; L-20, L-80, and L-150 groups). Changes in alveolar bone levels were clinically measured as the distance from the cementoenamel junction to the alveolar bone crest with a stereomicroscope. Tissues were histopathologically examined to assess the osteoclast numbers, osteoblastic activity, and inflammatory cell infiltration among the study groups. Enzyme-linked immunosorbent assay interleukin1β (IL-1β) and IL-10 levels in serum and gingival homogenates were evaluated. At the end of 15 days, the alveolar bone loss was significantly higher in the LO group compared to the NL, L-20, and L-150 groups ( P < .05). The osteoclast number in the LO group was significantly higher than the NL, L-20, and L-150 groups ( P < .05). Inflammatory cell infiltration was significantly higher in the LO and L-80 groups than the other groups ( P < .05). The highest serum and gingival homogenate IL-10 levels were determined in the NL group ( P < .05). The serum and gingival homogenate IL-1β levels in LO group were significantly higher than the NL, L-20, and L-150 groups ( P < .05). Within the limits of this study, it can be suggested that humic acid, when administered locally at 20 and 80 mg/kg doses, may prevent alveolar bone loss in the rat model.

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