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Moghadam A, Moghadam N, Doremami V, Pishghadam S, Mafi A. A New Experimental Technique for Complete Extraction of Mandibular First Molar Teeth in Rats. J Vet Dent 2024; 41:288-292. [PMID: 37259559 DOI: 10.1177/08987564231177576] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Intact extraction of the mandibular first molar tooth is an interesting model for studies of alveolar bone healing. The aim of this study was to describe a new experimental technique for extraction of rat mandibular first molar teeth with crown and all 4 roots intact using controlled forces applied to the teeth. One hundred and twenty female Sprague-Dawley rats were used from a center for experimental animal research. Animals underwent general anesthesia and were then placed in a special dental unit (designed by Moghadam) for the extraction of rat teeth. After syndesmotomy, luxation of the tooth began with a tipping movement in the buccal direction with a very low range of motion for 1 s. A tipping movement in the lingual direction was then used to continue luxation. After a maximum of 10 repetitions, the tooth was left alone for 30 s. After 3-4 stages of this cycle, the tooth loosened. To complete the luxation, the same forces were applied in the buccal and lingual directions with larger amplitude for 3 s. After this step, the tooth was loose enough to be easily extracted. The alveolus was then sutured closed. The results showed no hemorrhage or fracture of crowns and mesial or distal roots, and only 8% of the buccal and lingual roots fractured. The technique designed and used in this study was shown to be an effective model for complete molar tooth extraction in the rat. This technique could also be used in the treatment of other rodents.
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Affiliation(s)
- Abbas Moghadam
- Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran
- Neuroscience Research Center, Qom University of Medical Sciences, Qom, Iran
| | - Niloofar Moghadam
- Faulty of Dentistry, Qom University of Medical Sciences, Qom, Iran
- Student Research Committee, Qom University of Medical Sciences, Qom, Iran
| | - Vahid Doremami
- Faulty of Dentistry, Qom University of Medical Sciences, Qom, Iran
- Student Research Committee, Qom University of Medical Sciences, Qom, Iran
| | - Saeede Pishghadam
- Department of Biology, Science and Research Branch, Islamic Azad University, Tehran, Iran
| | - Afsaneh Mafi
- Cellular and Molecular Research Center, Qom University of Medical Sciences, Qom, Iran
- Neuroscience Research Center, Qom University of Medical Sciences, Qom, Iran
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Romanos GE, Vaglica M, Sculean A. Drug-associated bone resorption with potential dental and implant implications. Periodontol 2000 2022; 90:236-246. [PMID: 35916776 DOI: 10.1111/prd.12461] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Every year more and more innovative pharmacological agents are introduced medicine, to treat systemic diseases. Due to these rapid and recent advancements, many patients are receiving treatment with a high variety of drugs, such as selective serotonin reuptake inhibitors, bisphosphonates, tumor necrosis factor (TNF)-α inhibitors, cyclosporine, and steroids. Since implant and osseous surgery are common treatment modalities used, within dentistry, it is of critical important to acknowledge and discuss the potential effects of selective serotonin reuptake inhibitors, bisphosphonates, TNF-α inhibitors, cyclosporine, and steroids, on bone healing. The present paper discusses the possible detrimental ramifications and risks these drug classes may have on bone healing.
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Affiliation(s)
- Georgios E Romanos
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Michael Vaglica
- Department of Periodontology, School of Dental Medicine, Stony Brook University, Stony Brook, New York, USA
| | - Anton Sculean
- Department of Periodontology, School of Dental Medicine, Bern, Switzerland
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Ozcan-Kucuk A, Alan H, Gul M, Yolcu U. Evaluating the Effect of Resveratrol on the Healing of Extraction Sockets in Cyclosporine A-Treated Rats. J Oral Maxillofac Surg 2018; 76:1404-1413. [PMID: 29605535 DOI: 10.1016/j.joms.2018.02.030] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/02/2018] [Accepted: 02/27/2018] [Indexed: 12/15/2022]
Abstract
PURPOSE The objective of this study was to investigate the effects of resveratrol on alveolar socket healing after tooth extraction in normal and cyclosporin A (CsA)-treated rats. MATERIALS AND METHODS Seventy-two female Sprague-Dawley rats were separated into 4 groups of 18. Group 1 was injected with a placebo solution intraperitoneally. Group 2 was injected with resveratrol (10 μmol/kg) intraperitoneally. Groups 3 and 4 were injected with CsA (10 mg/kg) subcutaneously for 8 days once daily before tooth extraction. Next, the teeth were extracted and CsA injection continued until the animals were sacrificed. Eight days after commencing the CsA injections, group 4 was injected with resveratrol while continuing with CsA injections. Nine rats from each group were sacrificed on days 14 and 28, and sections were examined to assess the degree of inflammation, formation of connective tissue, and new bone formation. Immunohistochemical analysis was used to evaluate the alveolar socket healing process using osteocalcin and osteopontin markers. A P value less than .05 was considered significant. RESULTS There was more new bone formation in group 2 than in the other 3 groups on day 14 after tooth extraction (P < .05), and there was more new bone formation in group 2 than in groups 3 and 4 on day 28 after extraction (P < .05). Based on the immunohistochemical assessment, the amount of osteocalcin and osteopontin labeling was greater in group 2 compared with the other 3 groups on day 14 (P < .05); however, on day 28 after extraction, it was greater in group 4 compared with group 3 (P < .05). CONCLUSIONS Resveratrol improves alveolar socket healing in normal and CsA-treated rats. Resveratrol also increases levels of osteocalcin and osteopontin in normal and CsA-treated rats. These results suggest that this natural compound is useful for alveolar socket healing after tooth extraction.
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Affiliation(s)
- Ayse Ozcan-Kucuk
- Assistant Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Mersin University, Mersin, Turkey.
| | - Hilal Alan
- Associate Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Inonu University, Malatya, Turkey
| | - Mehmet Gul
- Professor, Department of Histology and Embryology, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Umit Yolcu
- Associate Professor, Department of Oral and Maxillofacial Surgery, Faculty of Dentistry, Inonu University, Malatya, Turkey
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Melo RB, Guimarães SB, Silva PGDB, Oriá RB, Melo JUDS, Vasconcelos PRL. Antiperoxidative properties of oil mixes of high ratio Omega-9:Omega-6 and low ratio Omega-6:Omega-3 after molar extraction in rats. Acta Cir Bras 2014; 29:371-5. [DOI: 10.1590/s0102-86502014000600004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2014] [Accepted: 04/22/2014] [Indexed: 11/22/2022] Open
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Kuo PJ, Tu HP, Chin YT, Lu SH, Chiang CY, Chen RY, Fu E. Cyclosporine-A inhibits MMP-2 and -9 activities in the presence of Porphyromonas gingivalis lipopolysaccharide: an experiment in human gingival fibroblast and U937 macrophage co-culture. J Periodontal Res 2012; 47:431-8. [PMID: 22321150 DOI: 10.1111/j.1600-0765.2011.01450.x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
BACKGROUND AND OBJECTIVE Studies have shown that bacterial plaque and the associated gingival inflammation increase the severity of gingival overgrowth induced by cyclosporine-A (CsA). This in vitro study aimed to evaluate the effect of CsA on the activities of MMPs from the co-culture of human gingival fibroblasts and U937 macrophages in the presence or absence of Porphyromonas gingivalis lipopolysaccharide (LPS). MATERIAL AND METHODS Activities of pro-MMP-2, MMP-2 and pro-MMP-9 in the supernatants of independent cultures and co-cultures were examined by zymography. RT-PCR was selected to evaluate the expression of mRNA for membrane type-1 (MT1) MMP in the co-cultures. RESULTS Activities of MMPs in the co-cultures were significantly greater when compared with any of the independent cultures. Lipopolysaccharide significantly increased the MMP activities in a dose-dependent manner in the co-cultures, whereas CsA inhibited these activities. In the presence of both CsA and LPS, the MMP activities inhibited by CsA could still be observed in the co-cultures. In the individual cultures, in contrast, the CsA-inhibited MMP activities, in the presence of LPS, were minimally detected. The mRNA expression of MT1-MMP was significantly enhanced after LPS treatment; however, this enhancement was inhibited by CsA. CONCLUSION This study demonstrated that, in co-cultures of human gingival fibroblasts and U937 macrophages, CsA could inhibit MMP activities in the presence of P. gingivalis LPS. It might be part of the underlying reason for the persistent overgrowth of gingiva seen when bacterial plaque and local inflammation are present during CsA therapy.
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Affiliation(s)
- P-J Kuo
- Department of Periodontology, China Medical University, Taichung, Taiwan
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Korpi JT, Åström P, Lehtonen N, Tjäderhane L, Kallio-Pulkkinen S, Siponen M, Sorsa T, Pirilä E, Salo T. Healing of extraction sockets in collagenase-2 (matrix metalloproteinase-8)-deficient mice. Eur J Oral Sci 2009; 117:248-54. [DOI: 10.1111/j.1600-0722.2009.00620.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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Chiu HC, Lu YT, Chin YT, Tu HP, Chiang CY, Gau CH, Nieh S, Fu E. Cyclosporine A inhibits the expression of membrane type-I matrix metalloproteinase in gingiva. J Periodontal Res 2009; 44:338-47. [PMID: 19210333 DOI: 10.1111/j.1600-0765.2008.01126.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
BACKGROUND AND OBJECTIVE Membrane type-I matrix metalloproteinase (MMP) and tissue inhibitor of metalloproteinase-2 (TIMP-2) regulate the activation of MMP-2; however, their roles in the activation of MMP-2 in gingiva during treatment with cyclosporine A are still unknown. Therefore, the expressions of membrane type-I MMP and TIMP-2, as well as MMP-2, in gingivae upon treatment with cyclosporine A were examined in vivo and in vitro. MATERIAL AND METHODS Thirty-four rats were divided into two groups after edentulous ridges were established. The experimental group received 30 mg/kg/d of cyclosporine A and the control group received vehicle. At the end of the experimental period, the rats were killed, the gingivae were obtained and the expression of mRNA and protein of membrane type-I MMP, TIMP-2 and MMP-2 in gingiva were examined using real-time polymerase chain reaction and immunohistochemistry. In human gingival fibroblasts, the activity of MMP-2 and the expression of MMP-2, membrane type-I MMP and TIMP-2 mRNAs were examined (using zymography and reverse transcription-polymerase chain reaction, respectively) after treatment with cyclosporine A. RESULTS In gingivae of rats, cyclosporine A significantly decreased the expression of mRNA and protein of membrane type-I MMP, but not of TIMP-2. The expression of MMP-2 mRNA was unaffected but the expression of MMP-2 protein showed a significant decrease upon treatment with cyclosporine A. In fibroblast culture medium, the presence of cyclosporine A induced a decrease in MMP-2 activity in a dose-dependent manner. The expression of MMP-2, membrane type-I MMP and TIMP-2 mRNAs in fibroblasts was not significantly affected by cyclosporine A; however, in fibroblasts the ratio of mRNA expression of membrane type-I MMP to that of TIMP-2 decreased as the cyclosporine A dose was increased. CONCLUSION Cyclosporine A inhibits the expression of membrane type-I MMP in gingiva and it may further reduce the activation of MMP-2.
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Affiliation(s)
- H-C Chiu
- Graduate Institute of Medical Sciences, National Defense Medical Center, Taipei, Taiwan, China
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Vertemati M, Minola E, Dolci C, Stabellini G, Pezzetti F, Moscheni C, Calastrini C, Bramerio M, Palmieri A, Vizzotto L. Gene expression, cytoskeletal changes and extracellular matrix synthesis in human osteoblasts treated with cyclosporin A. Biomed Pharmacother 2008; 63:619-26. [PMID: 19157774 DOI: 10.1016/j.biopha.2008.12.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2008] [Accepted: 12/06/2008] [Indexed: 01/19/2023] Open
Abstract
Cyclosporin A (CyA) is an immunosuppressive agent used to prevent allograft rejection, but unfortunately it causes adverse effects such as bone diseases, osteoporosis and osteomalacia. These pathologies involve an imbalance between synthesis, degradation and mineralization of extracellular matrix. CyA can modify extracellular matrix components such as glycosaminoglycans (GAG) and collagen fibers. In addition, normal cell activity is dependent on cell morphology and substrate cell attachment. We treated normal human osteoblasts with CyA and analyzed: (i) gene expression by a microarray method; (ii) extracellular GAG and collagen after (3)H-glucosamine and Western blot analysis; and (iii) cytoskeletal changes, using actin and tubulin fluorescent antibodies. CyA increased intra- and extracellular GAG and extracellular GAG classes such as hyaluronic acid, chondroitin sulphate, and dermatan sulphate; there was no noteworthy effect on heparan sulphate and the ratio of non-sulphated to sulphated GAG. In osteoblast cultures the drug reduced cytoskeletal actin, while tubulin did not change. In vivo the osteoblasts showed morphological changes with different extracellular matrix synthesis. Microarray analysis indicated the inhibition of gene pathways related to Wnt signaling molecules, and the cytoskeletal and focal adhesion cascade. In in vitro human osteoblasts CyA modified gene expression related to cytoskeletal pattern organization and cell morphology. Since in bone pathologies osteoblasts show different morphology related to cell size, these data suggest that in vivo osteoblast different functions could be dependent on alteration of osteoblast differentiation.
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Kim JY, Park SH, Cho KS, Kim HJ, Lee CK, Park KK, Choi SH, Chung WY. Mechanism of Azithromycin Treatment on Gingival Overgrowth. J Dent Res 2008; 87:1075-9. [DOI: 10.1177/154405910808701110] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Azithromycin is effective for the remission of cyclosporine A-induced gingival overgrowth (CIGO) in persons who have undergone renal transplant. To explain its mechanism in alleviating the clinical symptoms of these indivduals, we examined the effect of azithromycin on cell proliferation and collagen turnover modified by cyclosporin A in human gingival fibroblasts from healthy persons and from persons who had undergone renal transplant. Cyclosporin A-induced proliferation of renal transplant fibroblasts and normal fibroblasts was inhibited by azithromycin. Azithromycin elevated the reduced metalloproteinase (MMP)-1 and MMP-2 activities in cyclosporine A-treated renal transplant fibroblasts and normal fibroblasts. In cyclosporine A-treated renal transplant fibroblasts, azithromycin blocked the accumulation of total collagen in culture media and the increase in type I collagen mRNA level, but recovered the reduced MMP-2 mRNA level to the control. These results suggest that azithromycin may improve CIGO by blocking cyclosporine A-induced cell proliferation and collagen synthesis, and by activating MMP-2 in gingival fibroblasts of persons with cyclosporine A-induced gingival overgrowth.
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Affiliation(s)
- J.-Y. Kim
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
| | - S.-H. Park
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
| | - K.-S. Cho
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
| | - H.-J. Kim
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
| | - C.-K. Lee
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
| | - K.-K. Park
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
| | - S.-H. Choi
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
| | - W.-Y. Chung
- Department of Oral Biology,
- Department of Periodontology, Research Institute for Periodontal Regeneration,
- Oral Science Research Institute, and
- Brain Korea 21 Project, Yonsei University College of Dentistry, 134 Shinchon-Dong, Seodaemoon-Ku, Seoul 120-752, South Korea
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Pereira MC, Zecchin KG, Campagnoli EB, Jorge J. Ovariectomy delays alveolar wound healing after molar extractions in rats. J Oral Maxillofac Surg 2007; 65:2248-53. [PMID: 17954321 DOI: 10.1016/j.joms.2006.11.040] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2006] [Revised: 11/03/2006] [Accepted: 11/17/2006] [Indexed: 10/22/2022]
Abstract
PURPOSE This study was conducted to investigate the morphological effects of the absence of estrogen on alveolar wound healing of young female rats after tooth extraction. MATERIALS AND METHODS A total of 60 4- to 6-week-old female rats underwent bilateral ovariectomy (OVX) or sham operations. Three weeks later, the first mandibular molars were extracted. Subsequently, the animals were killed by cervical dislocation 3, 5, 7, 14, 21, or 28 days after tooth extraction. The mandibles were removed, and serial transversal sections of mesial alveolus of the first mandibular molars were obtained for histometric analysis. RESULTS OVX sockets showed significant increases in fibroblasts and collagen content 3 and 5 days after the extractions, followed by significant decreases in these parameters in the subsequent periods. In accordance with the decreased collagen content in the latest period of healing, new bone formation was significantly reduced in the OVX animals. CONCLUSION These findings suggest that the initial molecular changes observed in the absence of estrogen lead to delayed alveolar wound healing.
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Affiliation(s)
- Michele Conceição Pereira
- Department of Oral Diagnosis, Dental School, State University of Campinas (UNICAMP), Piracicaba, São Paulo, Brazil
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11
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Spolidorio LC, Marcantonio E, Spolidorio DMP, Nassar CA, Nassar PO, Marcantonio RA, Rossa C. Alendronate therapy in cyclosporine-induced alveolar bone loss in rats. J Periodontal Res 2007; 42:466-73. [PMID: 17760825 DOI: 10.1111/j.1600-0765.2007.00970.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND AND OBJECTIVE Cyclosporine A is an immunosuppressive drug that is widely used in organ transplant patients as well as to treat a number of autoimmune conditions. Bone loss is reported as a significant side-effect of cyclosporine A use because this can result in serious morbidity of the patients. As we have shown that cyclosporine A-associated bone loss can also affect the alveolar bone, the purpose of this study was to evaluate the effect of the concomitant administration of alendronate on alveolar bone loss in a rat model. MATERIAL AND METHODS Forty Wistar rats (10 per group) were given cyclosporine A (10 mg/kg, daily), alendronate (0.3 mg/kg, weekly), or both cyclosporine A and alendronate, for 60 d. The control group received daily injections of sterile saline. The expression of proteins associated with bone turnover, including osteocalcin, alkaline phosphatase and tartrate-resistant acid phosphatase (TRAP), and also the calcium levels, were evaluated in the serum. Analysis of the bone volume, alveolar bone surface, the number of osteoblasts per bone surface and the number of osteoclasts per bone surface around the lower first molars was also performed. RESULTS The results indicate that cyclosporine A treatment was associated with bone resorption, represented by a decrease in the bone volume, alveolar bone surface and the number of osteoblasts per bone surface and by an increase in the number of osteoclasts per bone surface and TRAP-5b. These effects were effectively counteracted by concomitant alendronate administration. CONCLUSION It is concluded that concomitant administration of alendronate can prevent cyclosporine A-associated alveolar bone loss.
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Affiliation(s)
- L C Spolidorio
- Department of Physiology and Pathology, Dental School of Araraquara, State University of São Paulo (UNESP), Araraquara, São Paulo, Brazil.
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Spolidorio LC, Nassar PO, Nassar CA, Spolidorio DMP, Muscará MN. Conversion of immunosuppressive monotherapy from cyclosporin a to tacrolimus reverses bone loss in rats. Calcif Tissue Int 2007; 81:114-23. [PMID: 17612778 DOI: 10.1007/s00223-007-9040-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/06/2007] [Accepted: 05/02/2007] [Indexed: 11/30/2022]
Abstract
Tacrolimus is used for transplant patients with refractory graft rejection and those with intolerance to cyclosporin (CsA), without the disfiguring adverse effects frequently attributed to CsA therapy. Since we have shown that CsA-associated bone loss can also affect alveolar bone, the purpose of this study was to evaluate the effects of conversion of monotherapy from CsA to tacrolimus on alveolar bone loss in rats. Groups of rats were treated with either CsA (10 mg/kg/day, s.c.), tacrolimus (1 mg/kg/day, s.c.), or drug vehicle for 60 and 120 days, and an additional group received CsA for 60 days followed by conversion to tacrolimus for a further 60-day period. Bone-specific alkaline phosphatase (BALP), tartrate-resistent acid phosphatase (TRAP-5b), calcium (Ca(2+)), interleukin (IL)-1beta, IL-6, and tumor necrosis factor alpha (TNF-alpha) concentrations were evaluated in the serum. Analyses of bone volume, bone surface, number of osteblasts, and osteoclasts were performed. Treatment with CsA for either 60 or 120 days was associated with bone resorption, represented by lower bone volume and increased number of osteoclasts; serum BALP, TRAP-5b, IL-1beta, IL-6, and TNF-alpha were also higher in these animals. After conversion from CsA to tacrolimus, all the altered serum markers returned to control values in addition to a significant increase of bone volume and a lower number of osteoclasts. This study shows that conversion from CsA to tacrolimus therapy leads to a reversal of the CsA-induced bone loss, which can probably be mediated by downregulation of IL-1beta, IL-6, and TNF-alpha production.
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Affiliation(s)
- Luís C Spolidorio
- Department of Physiology and Pathology, Dental School of Araraquara, State University of São Paulo, Rua Humaitá 1680, CEP 14901-803, Araraquara, São Paulo, Brazil.
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Zmora O, Khaikin M, Pishori T, Pikarsky A, Dinnewitzer A, Weiss EG, Nogueras JJ, Wexner SD. Should ileoanal pouch surgery be staged for patients with mucosal ulcerative colitis on immunosuppressives? Int J Colorectal Dis 2007; 22:289-92. [PMID: 16932926 DOI: 10.1007/s00384-006-0168-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 06/01/2006] [Indexed: 02/04/2023]
Abstract
INTRODUCTION AND OBJECTIVE Much debate has revolved around whether patients with mucosal ulcerative colitis (MUC) receiving immunosuppression should be weaned off immunosuppressives before undergoing ileal pouch surgery. Therefore, the aim of this study was to assess the affect of immunosuppressive drugs on postoperative complications after ileoanal pouch surgery. MATERIALS AND METHODS A retrospective medical record review of patients with MUC who underwent ileal pouch surgery while taking immunosuppressive drugs such as azathioprine, 6-mercaptopurine (6-MP), methotrexate, and cyclosporin A was performed. Postoperative complications in the study group were compared to three matched groups: patients with MUC who had ileoanal pouch surgery while taking systemic steroids, patients with MUC not receiving any immunosuppressive drugs, and patients with familial adenomatous polyposis. RESULTS Twenty-two patients with MUC who underwent ileoanal pouch surgery while taking immunosuppressive drugs were identified from a prospectively entered database of patients who had this surgery between 1988 and 2005. All but two patients underwent temporary fecal diversion. Fifteen patients were taking 6-MP or azathioprine; six were on cyclosporine A, and one both on azathioprine and cyclosporine A. Fifteen patients were also taking steroids at the time of ileoanal pouch surgery. Early (within 30 days of surgery) and late complications occurred in 36 and 50% of the study group patients, respectively, but did not significantly differ from a matched group of patients with MUC who did not take immunosuppressive drugs. Patients with familial adenomatous polyposis had a significantly lower long-term complication rate. CONCLUSION This retrospective case-matched study suggests that the use of immunosuppressive drugs and cyclosporine A may not be associated with an increased rate of complications after ileoanal pouch surgery.
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Affiliation(s)
- Oded Zmora
- Department of Colorectal Surgery, Cleveland Clinic Florida, 2950 Cleveland Clinic Blvd., Weston, FL 33331, USA
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Bostanci N, Ilgenli T, Pirhan DC, Clarke FM, Marcenes W, Atilla G, Hughes FJ, McKay IJ. Relationship between IL-1A polymorphisms and gingival overgrowth in renal transplant recipients receiving Cyclosporin A. J Clin Periodontol 2006; 33:771-8. [PMID: 16965524 DOI: 10.1111/j.1600-051x.2006.00990.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIM Levels of interleukin-1alpha (IL-1alpha) are elevated in periodontal inflammation. IL-1A gene polymorphisms are associated with inflammatory diseases. This study aimed to investigate IL-1A gene polymorphism in Cyclosporin A (CsA)-treated renal transplant patients and investigate the association between this polymorphism and gingival crevicular fluid (GCF) levels of several cytokines. MATERIALS AND METHODS Fifty-one renal transplant patients on CsA treatment (25 with and 26 without gingival overgrowth) and 29 healthy controls were recruited for the study. Demographic, pharmacological and periodontal parameters were recorded and gingival overgrowth was assessed. RESULTS Multiple regression analysis showed that genotype was significantly associated with gingival overgrowth (p=0.02). Carriage of the IL-1A (-889) T allele was strongly protective [95% confidence interval (CI): 0.046-0.77], although not significantly associated with IL-1alpha protein levels in GCF. IL-1alpha, IL-1beta and IL-8, but not IL-6, were detected in GCF of CsA-treated patients, but none of them was significantly associated with gingival overgrowth. CONCLUSIONS This study is the first to associate a gene polymorphism as a risk factor for CsA-induced gingival overgrowth in renal transplant patients, demonstrating that IL-1A polymorphism might alter individual susceptibility to CsA. However, there was no association between GCF cytokine levels and the presence of gingival overgrowth or patient IL-1A genotype.
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Affiliation(s)
- Nagihan Bostanci
- Department of Periodontology, School of Dentistry, Ege University, Izmir, Turkey.
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Gau CH, Hsieh YD, Shen EC, Lee S, Chiang CY, Fu E. Healing following tooth extraction in cyclosporine-fed rats. Int J Oral Maxillofac Surg 2005; 34:782-8. [PMID: 15979850 DOI: 10.1016/j.ijom.2005.02.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2003] [Revised: 09/30/2004] [Accepted: 02/01/2005] [Indexed: 12/23/2022]
Abstract
Healing after tooth extraction was studied in rats treated with cyclosporine-A (CSA) for four weeks. Sixty male Sprague-Dawley rats were assigned to one of three groups of 20 rats each. The maxillary right molars were extracted from two groups; the third group served as a non-extraction control. The non-extraction group and one extraction group (vehicle control) received the solvent mineral oil daily, and the other extraction group received 15 mg/kg CSA in mineral oil. Five rats from each group were killed 5, 10, 14 and 28 days after extraction and samples analyzed histologically. On days 5 and 10, bone volume was significantly lower and marrow volume significantly higher in both extraction groups than in the non-extraction group. The fractional-formation surfaces were significantly lower in the extraction groups than in the non-extraction group on day 5 only. Osteoid volume was significantly higher in the extraction vehicle control group than in the other two groups on days 10 and 14; however, the osteoid volume was higher in the CSA group than in the other two groups on day 28. On days 14 and 28, bone volume was lower and marrow volume higher in the CSA group than in the extraction vehicle control and non-extraction groups. On day 28, bony surface areas were significantly greater in the CSA group than in the extraction vehicle control and non-extraction groups. Soft-tissue evaluation showed significantly greater epithelial areas, connective tissue areas and total tissue areas in the CSA group than in the extraction vehicle control group on day 28, but not on day 14. These data suggest that CSA may influence healing of both the gingival tissue and the alveolar bony sockets in the tooth-extraction wound. Further detailed study is needed to identify the mechanisms responsible.
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Affiliation(s)
- C-H Gau
- Department of Nursing, Kang-Ning Junior College of Medical Care and Management, Taipei, Taiwan, ROC
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Adeyemo WL, Ogunlewe MO, Ladeinde AL, Bamgbose BO. Are Sterile Gloves Necessary in Nonsurgical Dental Extractions? J Oral Maxillofac Surg 2005; 63:936-40. [PMID: 16003618 DOI: 10.1016/j.joms.2005.03.008] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The aim of the study was to compare the incidence of healing complications of extraction socket with the use of sterile or clean nonsterile gloves during nonsurgical dental extractions. MATERIAL AND METHODS This was a randomized prospective study conducted at the exodontia clinic of the Department of Oral and Maxillofacial Surgery of the Lagos University Teaching Hospital (Nigeria), between October 2002 and January 2003. Patients who were referred for nonsurgical extractions of permanent teeth and who satisfied the inclusion criteria into the study were randomly allocated into 2 groups. One group had their extractions performed with the surgeon wearing a pair of sterile gloves and the second group had their extractions performed with the surgeon wearing a pair of clean nonsterile gloves. Two hundred sixty-nine patients who had 301 teeth extracted and satisfied the inclusion criteria for socket healing assessment were assessed for postoperative socket healing. RESULTS Three different types of socket healing complications were identified (dry socket, acutely inflamed socket, and acutely infected socket). A total of 32 patients (11.9%) developed socket healing complications. Nineteen of 122 patients in the sterile glove group and 13 of 147 patients in the clean nonsterile glove group developed socket healing complications (P = .09). CONCLUSION The study confirmed that the use of sterile surgical gloves offers no advantage over clean nonsterile gloves in minimizing extraction socket healing complications following dental extraction. Therefore, nonsurgical dental extraction can be safely performed with the surgeon wearing clean nonsterile gloves.
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Affiliation(s)
- Wasiu Lanre Adeyemo
- Department of Oral and Maxillofacial Surgery, Lagos University Teaching Hospital, Lagos, Nigeria.
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Zecchin KG, Pereira MC, Coletta RD, Graner E, Jorge J. Ovariectomy reduces the gelatinolytic activity and expression of matrix metalloproteinases and collagen in rat molar extraction wounds. Calcif Tissue Int 2005; 76:136-45. [PMID: 15549640 DOI: 10.1007/s00223-004-0013-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/20/2004] [Accepted: 06/02/2004] [Indexed: 11/25/2022]
Abstract
Osteoporosis is commonly associated with estrogen deficiency. However, the mechanisms by which the lack of this hormone causes bone loss are poorly understood. The bone structure of the oral cavity seems to be affected by estrogen deficiency, since a delayed healing process after tooth extraction has been observed after ovariectomy in rats. The aim of this study was to describe the effect of the absence of estrogen on the expression and activity of matrix metalloproteinases (MMC)-2 and -9 and expression of types I and III collagens in the alveolar granulation tissue of young female rats after tooth extraction. Sixty-six, four-week-old female rats underwent bilateral ovariectomies (OVX) or sham operations. Three weeks later, both first and second mandibular molars were extracted and the animals were killed by cervical dislocation 3, 5, or 7 days after tooth extraction. The granulation tissues were collected from the extracted alveolar sockets and used for zymographic, Western blot, or reverse transcription polymerase chain reaction (RT-PCR) analysis. There was a gradual increase on the expression of all studied proteins as well as MMP-2 and -9 activities in the periods after surgery. In contrast, OVX animals showed a significant decrease in the gelatinolytic activities and expression of MMP-2 and -9 and types I and III collagens. The results presented here in suggest that the absence of estrogen may possibly contribute to the delayed alveolar wound healing by interfering with the extracellular matrix turnover.
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Affiliation(s)
- K G Zecchin
- Department of Oral Pathology and Genetics, School of Dentistry of Piracicaba, UNICAMP, Limeira Avenue 901-13414-903, CP 52, Piracicaba, São Paulo, Brazil
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Tüter G, Serdar MA, Yalim M, Gürhan IS, Baloş K. Evaluation of matrix metalloproteinase-1 and tissue inhibitor of metalloproteinase-1 levels in gingival fibroblasts of cyclosporin A-treated patients. J Periodontol 2002; 73:1273-8. [PMID: 12479630 DOI: 10.1902/jop.2002.73.11.1273] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
BACKGROUND Cyclosporin A (CsA) is a potent immunosuppressant used to prevent organ transplant rejection and to treat various autoimmune diseases. CsA-induced gingival overgrowth (CsA GO) is the most widely seen side effect of this drug; its pathogenesis is not completely understood. The aim of this study was to identify and compare matrix metalloproteinase-1 (MMP-1) and tissue inhibitor of metalloproteinase-1 (TIMP-1) levels in gingival fibroblast cultures of tissues derived from renal transplant patients receiving CsA and exhibiting gingival overgrowth and from periodontally healthy control subjects. METHODS Gingival overgrowth samples were obtained from patients undergoing therapy with CsA, and control tissues were obtained from systemically healthy donors. Gingival fibroblasts were grown using explant cultures. Three different study groups were identified: 1) CsA GO fibroblast culture; 2) CsA-treated healthy gingival fibroblast culture (H+CsA); and 3) healthy gingival fibroblast culture (H). The levels of MMP-1 and TIMP-1 in these groups of gingival fibroblasts were analyzed by enzyme-linked immunoabsorbent assay (ELISA). RESULTS The levels of TIMP-1 were significantly lower in CsA GO than H (P < 0.05). There was no statistically significant difference in the levels of MMP-1 between H and CsA GO (P = 0.505). The ratio of MMP-1 to TIMP-1 was significantly higher in CsA GO than H (P < 0.05). CONCLUSIONS The results of this study indicate that CsA therapy does not have a significant effect on MMP-1 levels. However, low TIMP-1 levels can be an important factor in the pathogenesis of CsA GO, since the balance between MMP-1 and TIMP-1 levels was changed by CsA.
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Affiliation(s)
- Gülay Tüter
- Gazi University, Faculty of Dentistry, Department of Periodontology, Ankara, Turkey.
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