scholarly journals Protective Effect of Resveratrol against the Alveolar Bone Loss in Rats with Experimental Periodontitis and Acts Positively on the IL-17

2021 ◽  
pp. 162-173
Author(s):  
JordanaHeidemann Pandini ◽  
Lais Fernanda Pasqualotto ◽  
Pedro Henrique de Carli Rodrigues ◽  
João Paulo Gonçalves De Paivaa ◽  
Patricia Oehlmeyer Nassar ◽  
...  
Keyword(s):  
Bone Loss ◽  
Protective Effect ◽  
Alveolar Bone ◽  
Experimental Period ◽  
Alveolar Bone Loss ◽  
Control Group ◽  
Interleukin 17 ◽  
Periodontal Tissues ◽  
Male Wistar Rats ◽  
Experimental Periodontitis

The resveratrol is a polyphenol known for its health benefits, which includes the ability to interfere in the osteoblastogenesis, which may foster adverse immunomodulators effects in the host response to periodontal disease. In the present study we evaluated the appearance of periodontal tissues of rats with experimentally induced periodontitis, by using resveratrol. Twenty-four male Wistar rats were used, in which half of the animals received a ligature around the first lower molars, then forming the groups with experimental periodontitis. Next, four groups were created: 1) Control Group (CON); 2) The Ligature Group (LIG); 3) Group Resveratrol (RSV); 4) Ligature-Resveratrol Group (LIG-RSV). The animals of the Resveratrol groups were daily dosed with 10 mg/kg of body weight of polyphenol orally, during four weeks. After 105 days of experimental period, euthanasia was performed. The results showed a significantly lower alveolar bone loss (p<0.05) in animals that received resveratrol, and still, the polyphenol was able to reduce concentration of interleukin 17 (IL-17) in the groups dosed with it. Our conclusion is that dosing rats with experimental periodontitis with resveratrol could cause a protective effect on the alveolar bone loss, in addition to act positively on the IL-17.

scholarly journals Evaluation of the Effect of Melatonin on Periodontal Tissues in Rats with Periodontitis Induced Experimentally

2020 ◽  
pp. 115-126
Author(s):  
Bianca Caroline Custodio dos Santos ◽  
Jossinelma Camargo Gomes ◽  
Angela Esmeralda Zaparolli Miola ◽  
Simone Karine Rothen ◽  
Célia Patricia Muller Rodrigues ◽  
...  
Keyword(s):  
Bone Loss ◽  
Wistar Rats ◽  
Alveolar Bone ◽  
Bone Cell ◽  
Alveolar Bone Loss ◽  
Control Group ◽  
Periodontal Tissues ◽  
Melatonin Administration ◽  
Male Wistar Rats ◽  
Experimental Periodontitis

Objective: To analyze the effects of melatonin administration on the periodontal tissues of rats, linked or not with ligature-induced periodontal disease. Materials and Methods: 40 male Wistar rats aged eight weeks, divided into Control Group (GCON), Ligature Group (GLIG), Melatonin Group (GMEL) and Ligature and Melatonin Group (GLIGMEL). GLIG and GLIGMEL were induced to experimental periodontitis by placing a ligature on the lower molars for 30 days. During the experiment, after 16 days with the ligature, melatonin was administered orally for 10 mg/kg for 14 days in GMEL and GLIGMEL. In the end, euthanasia was performed and the hemi-mandibles were collected for the respective histological and radiographic analyzes; for the results, Shapiro-Wilk, ANOVA-One-Way and Tukey's multiple comparison tests were used. Results: A significantly lower alveolar bone loss (p<0.05) was demonstrated in the animals that received the administration of melatonin, in which it had a prophylactic function against the effects of the disease, evidenced in radiographic, histomorphometric and histological analyzes in the bone cell count. Conclusion: Results show that the therapy with administration of melatonin promotes a protective effect on the alveolar bone tissue of rats with induced experimental periodontitis.

Effects of Curcumin on Alveolar Bone Loss in Experimental Periodontitis in Rats: A Morphometric and Histopathologic Study

2017 ◽  
Vol 87 (5-6) ◽  
pp. 262-270 ◽  
Author(s):  
Aysun Akpinar¹ ◽  
Metin Calisir² ◽  
Nebi Cansın Karakan³ ◽  
Aysan Lektemur Alpan4 ◽  
Fahrettin Goze5 ◽  
...  
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Interleukin 10 ◽  
Alveolar Bone Loss ◽  
Control Group ◽  
Serum Samples ◽  
Male Wistar Rats ◽  
The Mean ◽  
Experimental Periodontitis ◽  
And Control

Abstract. Background: Curcumin is found in the rhizomes of the turmeric plant that has been showed antioxidant and anti-inflammatory effect. The aim of this study was to evaluate the effects of systemic curcumin therapy on alveolar bone loss in an experimental periodontitis model in rats. Material and Methods: Thirty-two male Wistar rats were randomly divided to 4 groups: 75 mg/kg/daily curcumin (C75; n =8), 150 mg/kg/daily curcumin (C150; n =8), Control (n =8), and Ligated (n =8). Curcumin was administrated using gastric gavage. After 12 days, the rats were sacrificed. Right mandibles samples were histopathologically examined. Alveolar bone loss was measured. Interleukin 1β (IL-1β) and interleukin 10 (IL-10) were evaluated in the serum samples and gingival homogenates. Results: The measurements of alveolar bone loss in the mandibular molars revealed significantly higher bone-loss values in the Ligated group than the Control, C75 and C150 groups. The IL-1β levels in the gingival homogenates were significantly increased in the Ligated group compared to those of the Control, C75 and C150 groups. The serum IL-1β levels in the Ligated group were significantly higher than the Control group. The mean osteoblast numbers in the Ligated group were lower than those of the Control, C75 and C150 groups. The C150 groups showed significantly more osteoblasts than the Control group. The osteoclast numbers in the Ligated group increased significantly compared to the C75, C150 and control groups. Conclusion: This study demonstrates that systemic administration of curcumin at the 75 and 150mg/kg doses reduced alveolar bone loss in the periodontal disease in rats. Keywords: Alveolar bone loss, Antioxidant, Curcumin, Ligature-induced, Histomorphometric, Micronutrition

Involvement of Cot/Tp12 in Bone Loss during Periodontitis

2010 ◽  
Vol 89 (2) ◽  
pp. 192-197 ◽  
Author(s):  
T. Ohnishi ◽  
A. Okamoto ◽  
K. Kakimoto ◽  
K. Bandow ◽  
N. Chiba ◽  
...  
Keyword(s):  
Bone Loss ◽  
Alveolar Bone ◽  
Alveolar Bone Loss ◽  
Periodontal Tissue ◽  
Rankl Expression ◽  
Periodontal Tissues ◽  
Tnf Α ◽  
Experimental Periodontitis ◽  
Deficient Mice

Periodontitis causes resorption of alveolar bone, in which RANKL induces osteoclastogenesis. The binding of lipopolysaccharide to Toll-like receptors causes phosphorylation of Cot/Tp12 to activate the MAPK cascade. Previous in vitro studies showed that Cot/Tp12 was essential for the induction of RANKL expression by lipopolysaccharide. In this study, we examined whether Cot/Tp12 deficiency reduced the progression of alveolar bone loss and osteoclastogenesis during experimental periodontitis. We found that the extent of alveolar bone loss and osteoclastogenesis induced by ligature-induced periodontitis was decreased in Cot/Tp12-deficient mice. In addition, reduction of RANKL expression was observed in periodontal tissues of Cot/Tp12-deficient mice with experimental periodontitis. Furthermore, we found that Cot/Tp12 was involved in the induction of TNF-α mRNA expression in gingiva of mice with experimental periodontitis. Our observations suggested that Cot/Tp12 is essential for the progression of alveolar bone loss and osteoclastogenesis in periodontal tissue during experimental periodontitis mediated through increased RANKL expression.

scholarly journals Comparative effects of riboflavin, nicotinamide and folic acid on alveolar bone loss: A morphometric and histopathologic study in rats

2016 ◽  
Vol 144 (5-6) ◽  
pp. 273-279 ◽  
Author(s):  
Aysun Akpınar ◽  
Nebı Karakan ◽  
Aysan Alpan ◽  
Suat Dogan ◽  
Fahrettin Goze ◽  
...  
Keyword(s):  
Folic Acid ◽  
Bone Loss ◽  
Alveolar Bone ◽  
Alveolar Bone Loss ◽  
Water Soluble ◽  
Control Group ◽  
Serum Samples ◽  
Osteoblastic Activity ◽  
Periodontal Tissues ◽  
Mandibular Molar

Introduction. Periodontitis is a chronic inflammatory and osteolytic disease. Vitamin B complex is a class of water-soluble vitamins that play important roles in cell metabolism. Objective. The aim of this study was to evaluate the effects of riboflavin (RBF), nicotinamide (NA), and folic acid (FA) on alveolar bone loss in experimental periodontitis rat model. Methods. Sixty-four male Wistar rats were randomly divided into the following eight groups: Control, Ligated, RBF50 (RBF, 50 mg/kg daily), NA50 (NA, 50 mg/kg daily), FA50 (FA, 50 mg/kg daily), RBF100 (RBF, 100 mg/kg daily), NA100 (NA, 100 mg/kg daily), and FA100 (FA, 100 mg/kg daily). Periodontitis was induced using silk ligature around the right first mandibular molar. After 11 days the rats were sacrificed. Mandible and serum samples were collected. Changes in alveolar bone levels were measured clinically, and periodontal tissues were examined histopathologically. Serum IL-1? (pg/ml) levels were analyzed by using ELISA. Results. Mean alveolar bone loss in the mandibular first molar tooth revealed to be significantly lower in RBF100 group than in the Control group. In the Ligated group, alveolar bone loss was significantly higher than in all other groups. The ratio of presence of inflammatory cell infiltration in the Ligated group was significantly higher than in the Control group. The differences in the serum IL-1? levels between the groups were not statistically significant. Osteoclasts that were observed in the Ligated group were significantly higher than those of the Control and FA100 groups. The osteoblastic activity in the Ligated group, RBF100, and NA100 groups were shown to be significantly higher than those in the Control group. Conclusion. This study has demonstrated that systemic administration of RBF, NA, and FA in different dosages (50-100 mg/kg) reduced alveolar bone loss in periodontal disease in rats.

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 The Protective Effect of Rhizoma Dioscoreae Extract against Alveolar Bone Loss in Ovariectomized Rats via Regulating Wnt and p38 MAPK Signaling

Nutrients ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 5853-5870 ◽  
Author(s):  
Zhiguo Zhang ◽  
Lihua Xiang ◽  
Dong Bai ◽  
Wenlai Wang ◽  
Yan Li ◽  
...  
Keyword(s):  
Bone Loss ◽  
Protective Effect ◽  
P38 Mapk ◽  
Alveolar Bone ◽  
Mapk Signaling ◽  
Alveolar Bone Loss ◽  
Ovariectomized Rats

scholarly journals Effects of cigarette smoking on periodontium

2002 ◽  
Vol 55 (5-6) ◽  
pp. 229-232 ◽  
Author(s):  
Marija Bokor-Bratic
Keyword(s):  
Bone Loss ◽  
Oral Hygiene ◽  
Dental Plaque ◽  
Alveolar Bone ◽  
Gingival Recession ◽  
Tobacco Consumption ◽  
Alveolar Bone Loss ◽  
Age Difference ◽  
Periodontal Tissues ◽  
Periodontal Condition

Introduction The exact mechanisms by which smoking effects the periodontal tissues are not known. Studies in which plaque or calculus are taken into consideration come to conflicting conclusions regarding effects of smoking. Aim The aim of this study was to examine the oral hygiene and periodontal status in smokers and compare them with nonsmokers. Material and methods The study group comprised 83 smokers and 83 nonsmokers. The mean age (SD) of smokers and nonsmokers was 42,4?7,0 years and 43,7?6,4 years, respectively. The age difference was not statistically significant. The average tobacco consumption of the smokers at the time of investigation was 14 cigarettes a day and they had been regular smokers for 21 years on average. Results The amount of dental plaque was evaluated in accordance with the criteria of Green-Vermillion by using disclosing solution. The periodontal condition was evaluated by Ramfjord Periodontal Disease Index. For gingival recession the distance from the cemento-enamel junction to the gingival margin was determined on mid-buccal and mid-lingual surfaces of all teeth. Each subject was radiographically examined with a full mouth intraoral survey. Alveolar bone loss was determined as the distance from the cemento-enamel junction to the point where lamina dura became continuous with the compact bone of the interdental septum. Mean alveolar bone loss based on all mesial and distal measurements was calculated for each subject. The amount of dental plaque was high in both smokers (2,60,60) and nonsmokers (1,50,70), whereas the differences were statistically significant (p<0.001). Conclusion Periodontal destruction, alveolar bone loss and gingival recession were significantly increased in smokers compared to nonsmokers (p<0.001). It is concluded that differences observed between smokers and nonsmokers with regard to periodontal condition are attributable to differences in oral hygiene. Smoking is a risk factor for periodontal health.

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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