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Osteogenesis Differences Around Titanium Implant and in Bone Defect Between Jaw Bones and Long Bones. J Craniofac Surg 2021; 31:2193-2198. [PMID: 33136853 DOI: 10.1097/scs.0000000000006795] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
The aim of this study is to evaluate the osteogenesis around titanium implant and in bone defect or fracture in jaw bones and long bones in ovariectomized (OVX) animal models. The literature on the osteogenesis around titanium implant and in bone defect or fracture in jaw bones and long bones was reviewed with charts. Fourty-eight rats were randomly divided into OVX group with ovariectomy and SHAM (sham-surgery) group with sham surgery. Titanium implants were inserted in the right mandibles and tibiae; bone defects were created in the left mandibles and tibiae. Two-week postoperatively, mandibles and tibiae of 8 rats were harvested and examined by hematoxylin and eosin staining and histological analysis; 4-week postoperatively, all mandibles and tibiae were harvested and examined by Micro-CT and histological analysis. A total of 52 articles were included in this literature review. Tibial osteogenesis around titanium implant and in bone defect in OVX group were significantly decreased compared with SHAM group. However, osteogenesis differences in the mandible both around titanium implant and in bone defect between groups were not statistically significant. OVX-induced osteoporosis suppresses osteogenesis around titanium implant and in the bone defect or fracture in long bones significantly while has less effect on that in the jaw bones.
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Só BB, Silveira FM, Llantada GS, Jardim LC, Calcagnotto T, Martins MAT, Martins MD. Effects of osteoporosis on alveolar bone repair after tooth extraction: A systematic review of preclinical studies. Arch Oral Biol 2021; 125:105054. [PMID: 33667958 DOI: 10.1016/j.archoralbio.2021.105054] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 12/09/2022]
Abstract
OBJECTIVE This systematic review aimed to address whether the alveolar socket repair after a tooth extraction is impacted by an osteoporotic phenotype and propose methodological observations. DESIGN A search strategy in MEDLINE/PubMed, EMBASE, Web of Science, and Scopus databases was performed. Quality assessment was carried out through the SYRCLE Risk of Bias tool. RESULTS Out of the 1147 potentially relevant records, 25 met the inclusion criteria. Most of the studies were performed in rats, and ovariectomy (OVX) was the most frequent osteoporosis induction method. Histomorphometry, micro-computed tomography (microCT), and immunohistochemistry were the main bone repair evaluation methods. Most of the included studies (88 %) presented negative impacts of osteoporosis on the alveolar socket repair. Only three studies (12 %) showed no statistical differences among groups. Overall, most of the quality assessment categories presented a high percentage of unclear risk of bias due to insufficient information in the studies. CONCLUSIONS The results indicated that an osteoporotic phenotype seems to impair alveolar socket repair after tooth extraction. However, there is still a lack of information and standardization. Therefore, further studies should consider the proposed methodological aspects regarding animal characteristics, OVX associated with a low calcium diet, waiting 8 weeks to osteoporosis induction, maxillary molars as the best option for tooth extraction, confirming and reporting OVX and osteoporosis success, and an appropriate method of repair analysis.
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Affiliation(s)
- Bruna Barcelos Só
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, R. Ramiro Barcelos, 2492, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Felipe Martins Silveira
- Oral Diagnosis Department, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, CEP: 13414-903, Piracicaba, SP, Brazil
| | - Gabriela Sauer Llantada
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, R. Ramiro Barcelos, 2492, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Luisa Comerlato Jardim
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, R. Ramiro Barcelos, 2492, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Thiago Calcagnotto
- Oral and Maxillofacial Surgery Department, FATEC Dental CEEO, Igrejinha, R. Independência, 290, CEP: 95650-000, RS, Brazil
| | - Marco Antonio Trevizani Martins
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, R. Ramiro Barcelos, 2492, CEP: 90035-003, Porto Alegre, RS, Brazil
| | - Manoela Domingues Martins
- Department of Oral Pathology, School of Dentistry, Federal University of Rio Grande do Sul, R. Ramiro Barcelos, 2492, CEP: 90035-003, Porto Alegre, RS, Brazil; Oral Diagnosis Department, Piracicaba Dental School, University of Campinas, Av. Limeira, 901, CEP: 13414-903, Piracicaba, SP, Brazil.
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Duarte PM, Miranda TS, Marins LM, Perez EG, Copes LG, Tonietto CB, Montalli VAM, Malta FS, Napimoga MH. Systemic Lithium Chloride Administration Improves Tooth Extraction Wound Healing in Estrogen-Deficient Rats. Braz Dent J 2020; 31:640-649. [PMID: 33237236 DOI: 10.1590/0103-6440202003595] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/17/2020] [Indexed: 11/22/2022] Open
Abstract
The purpose of this investigation was to evaluate the effects of lithium chloride (LiCl) on the socket healing of estrogen-deficient rats. Seventy-two rats were allocated into one of the following groups: Control, Ovariectomy and LiCl (150 mg/kg/2 every other day orally) + Ovariectomy. Animals received LiCl or water from the 14th day post-ovariectomy, until the completion of the experiment. On the 21st day after ovariectomy, the first molars were extracted. Rats were euthanized on the 10th, 20th and 30th days following extractions. Bone healing (BH), TRAP positive cells and immunohistochemical staining for OPG, RANKL, BSP, OPN and OCN were evaluated. The Ovariectomy group presented decreased BH compared to the LiCl group at 10 days, and the lowest BH at 20 days (p<0.05). At 30 days, the Ovariectomy and LiCl-groups presented lower BH than that of the Control (p<0.05). The number of TRAP-stained cells was the lowest in the LiCl group at 20 days and the highest in the Ovariectomy group at 30 days (p<0.05). At 10 days of healing, the LiCl group demonstrated stronger staining for all bone markers when compared to the other groups, while the Ovariectomy group presented higher RANKL expression than that of the Control (p<0.05). LiCl enhanced bone healing in rats with estrogen deficiency, particularly in the initial healing phases. However, as data on the effects of lithium chloride on bone tissue are still preliminary, more studies related to its toxicity and protocol of administration are necessary before its application in clinical practice.
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Affiliation(s)
- Poliana M Duarte
- Department of Periodontology, Dental Research Division, UNG - Universidade Guarulhos, Guarulhos, SP, Brazil.,Department of Periodontology, College of Dentistry, University of Florida, Gainesville, FL, USA
| | - Tamires S Miranda
- Department of Periodontology, Dental Research Division, UNG - Universidade Guarulhos, Guarulhos, SP, Brazil
| | - Letícia M Marins
- Department of Periodontology, Dental Research Division, UNG - Universidade Guarulhos, Guarulhos, SP, Brazil
| | - Erick G Perez
- Immunology Area, SLMANDIC - Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Campinas, SP, Brazil
| | - Liliana G Copes
- Immunology Area, SLMANDIC - Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Campinas, SP, Brazil
| | - Cristine B Tonietto
- Immunology Area, SLMANDIC - Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Campinas, SP, Brazil
| | - Victor A M Montalli
- Immunology Area, SLMANDIC - Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Campinas, SP, Brazil
| | - Fernando S Malta
- Department of Periodontology, Dental Research Division, UNG - Universidade Guarulhos, Guarulhos, SP, Brazil
| | - Marcelo H Napimoga
- Immunology Area, SLMANDIC - Faculdade São Leopoldo Mandic, Instituto São Leopoldo Mandic, Campinas, SP, Brazil
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Miranda TS, Napimoga MH, De Franco L, Marins LM, Malta FDS, Pontes LA, Morelli FM, Duarte PM. Strontium ranelate improves alveolar bone healing in estrogen‐deficient rats. J Periodontol 2020; 91:1465-1474. [DOI: 10.1002/jper.19-0561] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 12/13/2019] [Accepted: 01/24/2020] [Indexed: 11/07/2022]
Affiliation(s)
| | - Marcelo Henrique Napimoga
- Faculdade São Leopoldo Mandic Instituto São Leopoldo Mandic Área de Imunologia Campinas São Paulo Brazil
| | - Leonardo De Franco
- Department of Periodontology Dental Research Division Guarulhos University Guarulhos São Paulo Brazil
| | - Letícia Macedo Marins
- Department of Periodontology Dental Research Division Guarulhos University Guarulhos São Paulo Brazil
| | - Fernando de Souza Malta
- Department of Periodontology Dental Research Division Guarulhos University Guarulhos São Paulo Brazil
| | - Louise Antonialice Pontes
- Department of Periodontology Dental Research Division Guarulhos University Guarulhos São Paulo Brazil
| | - Fernando Mendes Morelli
- Faculdade São Leopoldo Mandic Instituto São Leopoldo Mandic Área de Imunologia Campinas São Paulo Brazil
| | - Poliana Mendes Duarte
- Department of Periodontology Dental Research Division Guarulhos University Guarulhos São Paulo Brazil
- Department of Periodontology College of Dentistry University of Florida Gainesville FL
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Cho CS, Jeong HS, Kim IY, Jung GW, Ku BH, Park DC, Moon SB, Cho HR, Bashir KMI, Ku SK, Choi JS. Anti-osteoporotic effects of mixed compositions of extracellular polymers isolated from Aureobasidium pullulans and Textoria morbifera in ovariectomized mice. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:295. [PMID: 30400922 PMCID: PMC6220464 DOI: 10.1186/s12906-018-2362-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Accepted: 10/25/2018] [Indexed: 12/26/2022]
Abstract
Background Extracellular polymeric substances isolated from Aureobasidium pullulans (EAP), containing specifically 13% β-1,3/1,6-glucan, have shown various favorable bone-preserving effects. Textoria morbifera Nakai (TM) tree has been used as an ingredient in traditional medicine and tea for various pharmacological purposes. Thus, the present study was aimed to examine the synergistic anti-osteoporotic potential of mixtures containing different proportions of EAP and TM compared with that of the single formulations of each herbal extract using bilateral ovariectomized (OVX) mice, a renowned rodent model for studying human osteoporosis. Methods Thirty five days after bilateral-OVX surgery, 9 combinations of EAP:TM (ratios = 1:1, 1:3, 1:5, 1:7, 1:9, 3:1, 5:1, 7:1, 9:1) and single separate formulations of EAP or TM were supplied orally, once a day for 35 days at a final concentration of 200 mg/kg. Variations in body weight gains during the experimental periods, as well as femur weights, bone mineral density (BMD), bone strength (failure load), and mineral content (calcium [Ca] and inorganic phosphorus [IP]) following sacrifice were measured. Furthermore, histomorphometric and histological profile analyses of serum biochemical parameters (osteocalcin content and bone specific alkaline phosphatase [bALP] activity) were conducted following sacrifice. Femurs histomorphometric analyses were also conducted for bone resorption, structure and mass. The results for the mixed formulations of EAP:TM and separate formulations were compared with those of risedronate sodium (RES). Results The EAP:TM (3:1) formulation synergistically enhanced the anti-osteoporotic potential of individual EAP or TM formulations, possibly due to enhanced variety of the active ingredients. Furthermore, the effects of EAP:TM were comparable to those of RES (2.5 mg/kg) treatment. Conclusion The results of this study suggest that, the EAP:TM (3:1) combination might act as a new pharmaceutical agent and/or health functional food substance for curing osteoporosis in menopausal women. Electronic supplementary material The online version of this article (10.1186/s12906-018-2362-y) contains supplementary material, which is available to authorized users.
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Calciolari E, Donos N, Mardas N. Osteoporotic Animal Models of Bone Healing: Advantages and Pitfalls. J INVEST SURG 2016; 30:342-350. [DOI: 10.1080/08941939.2016.1241840] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Elena Calciolari
- Centre for Oral Clinical Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK
| | - Nikolaos Donos
- Centre for Oral Clinical Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK
| | - Nikos Mardas
- Centre for Adult Oral Health, Barts and The London School of Dentistry & Hospital, Queen Mary University of London (QMUL), London, UK
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Calciolari E, Mardas N, Dereka X, Kostomitsopoulos N, Petrie A, Donos N. The effect of experimental osteoporosis on bone regeneration: Part 1, histology findings. Clin Oral Implants Res 2016; 28:e101-e110. [PMID: 27502355 DOI: 10.1111/clr.12936] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2016] [Indexed: 01/21/2023]
Abstract
OBJECTIVES To histologically define the healing events occurring in calvarial critical size defects (CSDs) following treatment with a collagen barrier for guided bone regeneration (GBR) and a particulate graft in healthy and osteoporotic conditions. MATERIAL AND METHODS Thirty-six 10-month-old, female, Wistar rats were used in this study. Half of them were ovariectomized (OVX) and fed with a low-calcium diet to induce an osteoporotic-like status. In each animal of both groups, two 5-mm CSDs were created, one in the centre of each parietal bone, and they were treated with a deproteinized bovine bone mineral (DBBM) particulate graft and a bi-layer collagen membrane. Six OVX and six healthy control rats were randomly euthanized at 7, 14 and 30 days. One defect per animal was randomly processed for decalcified histology. Three central sections were used for qualitative histology and histomorphometric analysis. RESULTS No significant difference in terms of percentage of newly formed bone was detected between the two groups at the different healing periods. However, a trend towards less bone formation and of poorer quality, expressed as reduced bone maturation, was detected in the OVX animals at 30 days. DISCUSSION According to this study, GBR with a collagen barrier and a DBBM graft can be successfully obtained also in osteoporotic-like conditions. Future studies considering longer healing periods and controlling for the confounding factors arising from the use of a particulate graft are needed to confirm these data.
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Affiliation(s)
- Elena Calciolari
- Centre for Oral Clinical Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK.,Periodontology Department, Eastman Dental Institute, University College London (UCL), London, UK
| | - Nikos Mardas
- Centre for Adult Oral Health, Bart's & The London School of Dentistry and Medicine, Queen Mary University of London (QMUL), London, UK
| | - Xanthippi Dereka
- Department of Periodontology, National and Kapodistrian University of Athens, Athens, Greece
| | - Nikolaos Kostomitsopoulos
- Laboratory Animal Facilities, Biomedical Research Foundation of the Academy of Athens, Athens, Greece
| | - Aviva Petrie
- Biostatistics Unit, Eastman Dental Institute, University College London (UCL), London, UK
| | - Nikolaos Donos
- Centre for Oral Clinical Research, Institute of Dentistry, Queen Mary University of London (QMUL), Barts and The London School of Medicine and Dentistry, London, UK
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Jung MY, Kim JW, Kim KY, Choi SH, Ku SK. Polycan, a β-glucan from Aureobasidium pullulans SM-2001, mitigates ovariectomy-induced osteoporosis in rats. Exp Ther Med 2016; 12:1251-1262. [PMID: 27588046 PMCID: PMC4998138 DOI: 10.3892/etm.2016.3485] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Accepted: 11/05/2015] [Indexed: 01/16/2023] Open
Abstract
The present study aimed to investigate the protective effects of Polycan, a β-glucan from Aureobasidium pullulans SM-2001, in a rat model of ovariectomy-induced osteoporosis. Ovariectomized (OVX) rats were orally administered 31.25, 62.5 or 125 mg/kg/day Polycan for 126 days, and alterations in body weight, bone mineral content, bone mineral density, failure load, histological profiles and histomorphometric indices were analyzed. In particular, serum levels of osteocalcin, bone-specific alkaline phosphatase (bALP), calcium and phosphorus, and the urine deoxypyridinoline/creatinine ratio, were measured. Furthermore, the femur, tibia and lumbar vertebrae were harvested from all rats, and histomorphometrical analyses were conducted in order to assess the mass and structure of the bones, and the rates of bone resorption and formation. One group of rats was treated with alendronate, which served as the reference drug. The results of the present study suggested that Polycan treatment was able to inhibit ovariectomy-induced alterations in bone resorption and turnover in a dose-dependent manner. In addition, the serum expression levels of bALP and all histomorphometrical indices for bone formation were markedly increased in the Polycan-treated groups. These results indicated that Polycan was able to preserve bone mass and strength, and increase the rate of bone formation in OVX rats; thus suggesting that Polycan may be considered a potential effective anti-osteoporosis agent.
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Affiliation(s)
- Mi Young Jung
- Department of Anatomy and Histology, College of Oriental Medicine, Daegu Haany University, Gyeongsan-si, Gyeongsangbuk-do 712-715, Republic of Korea
| | - Joo Wan Kim
- Glucan Corp. Research Institute, Marine Bio-Industry Development Center, Busan 619-912, Republic of Korea
| | - Ki Young Kim
- Glucan Corp. Research Institute, Marine Bio-Industry Development Center, Busan 619-912, Republic of Korea
| | - Seong Hun Choi
- Department of Anatomy and Histology, College of Oriental Medicine, Daegu Haany University, Gyeongsan-si, Gyeongsangbuk-do 712-715, Republic of Korea
| | - Sae Kwang Ku
- Department of Anatomy and Histology, College of Oriental Medicine, Daegu Haany University, Gyeongsan-si, Gyeongsangbuk-do 712-715, Republic of Korea
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Choi JS, Kim JW, Kim KY, Cho HR, Choi IS, Ku SK. Antiosteoporotic effects of Polycan in combination with calcium lactate-gluconate in ovariectomized rats. Exp Ther Med 2014; 8:957-967. [PMID: 25120630 PMCID: PMC4113539 DOI: 10.3892/etm.2014.1793] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Accepted: 02/26/2014] [Indexed: 12/19/2022] Open
Abstract
The aim of the present study was to investigate the optimum composition of Polycan (β-glucan complex) and calcium lactate-gluconate (CaLG) that exhibited the most beneficial effects in ovariectomy (OVX)-induced osteoporotic rats. Polycan and CaLG single formulas (100 mg/kg each), and three doses (50, 100 and 200 mg/kg) of three mixed formulas [polycan:CaLG (PCLG)=1:99, 5:95 and 10:90] were orally administered once a day for 84 days. The effects of the test materials were compared with those of a risedronate sodium-treated group. OVX resulted in an increase in body weight, decreased bone formation, elevated serum osteocalcin levels and urine deoxypyridinoline/creatinine ratio, as well as decreased serum bone-specific alkaline phosphatase levels, femur indices, bone mineral content, bone mineral density and failure load. However, these OVX-induced osteoporotic changes markedly decreased following the administration of the test materials. Continuous oral treatment of Polycan or CaLG single formulas and the PCLG mixed formulas preserved bone mass and strength. The PCLG 10:90 mixed formula exhibited the most favorable synergistic antiosteoporotic effects in the OVX-induced osteoporotic rats as compared with equal doses of the Polycan or CaLG single formulas.
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Affiliation(s)
- Jae-Suk Choi
- RIS Center, Industry-Academic Cooperation Foundation, Silla University, Busan 702-701, Republic of Korea
| | - Joo Wan Kim
- Glucan Corporation Research Institute, Marine Bio-Industry Development Center, Busan 619-912, Republic of Korea
| | - Ki Young Kim
- Glucan Corporation Research Institute, Marine Bio-Industry Development Center, Busan 619-912, Republic of Korea
| | - Hyung-Rae Cho
- Glucan Corporation Research Institute, Marine Bio-Industry Development Center, Busan 619-912, Republic of Korea
| | - In Soon Choi
- RIS Center, Industry-Academic Cooperation Foundation, Silla University, Busan 702-701, Republic of Korea ; Department of Biological Science, Silla University, Busan 702-701, Republic of Korea
| | - Sae Kwang Ku
- Department of Anatomy and Histology, College of Oriental Medicine, Daegu Haany University, Gyeongsan 712-715, Republic of Korea
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Bezerra JP, de Siqueira A, Pires AG, Marques MR, Duarte PM, Bastos MF. Effects of Estrogen Deficiency and/or Caffeine Intake on Alveolar Bone Loss, Density, and Healing: A Study in Rats. J Periodontol 2013; 84:839-49. [DOI: 10.1902/jop.2012.120192] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Božič M, Ihan Hren N. A novel method of dental panoramic tomogram analysis: a perspective tool for a screening test for osteoporosis. J Craniomaxillofac Surg 2013; 41:808-15. [PMID: 23515071 DOI: 10.1016/j.jcms.2013.01.033] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2012] [Revised: 01/07/2013] [Accepted: 01/18/2013] [Indexed: 10/27/2022] Open
Abstract
OBJECTIVE The purpose of this study was to test a new method of dental panoramic tomogram (DPT) analysis to show the differences of mandibular bone volume and relative bone density (RBD) in order to detect osteoporosis. MATERIALS AND METHODS A case-control study compared 62 women with osteoporosis (O) and 24 women with osteopenia (o) to a control group of 33 women with normal bone mineral density (N). DPTs were analyzed using an original method resulting in anatomic and RBD indexes as well as using previously described methods: panoramic mandibular index (PMI) and mandibular cortical width (MCW). RESULTS One anatomic and four RBD indexes differed statistically significantly between the group O and N and three RBD indexes differed statistically significantly between o and N. PMI did not show statistically significant differences between the groups. The MCW differed significantly at two measured sites between O and N. CONCLUSIONS Average values of RBD indexes were statistically significantly different between O and N and also between o and N. Important differences regarding RBD were confirmed using a new and original method of common DPT analysis. This method could serve as a screening tool for osteoporosis.
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Affiliation(s)
- Marko Božič
- Department of Maxillofacial and Oral Surgery (Head: Assist. Prof. Andrej Kansky, DMD, PhD), University Medical Center Ljubljana, Zaloška 2, SI-1000 Ljubljana, Slovenia.
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12
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Influence of chronic alcoholism and oestrogen deficiency on the variation of stoichiometry of hydroxyapatite within alveolar bone crest of rats. Arch Oral Biol 2012; 57:1385-94. [DOI: 10.1016/j.archoralbio.2012.04.011] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2011] [Revised: 04/17/2012] [Accepted: 04/21/2012] [Indexed: 01/06/2023]
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13
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Prado RFD, Silveira VÁS, Rocha RFD, Vasconcellos LMRD, Carvalho YR. Effects of experimental osteoporosis and low calcium intake on postextraction sockets of rats. Int J Exp Pathol 2012; 93:139-47. [PMID: 22364763 PMCID: PMC3385706 DOI: 10.1111/j.1365-2613.2012.00809.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Accepted: 12/25/2011] [Indexed: 12/18/2022] Open
Abstract
This study analysed the initial effects of the combination of oestrogen deficiency with a calcium-deficient diet on alveolar bone repair. Sixty-three 3-month-old female rats were either ovariectomized (OVX, n = 42) or sham-operated (SHAM, n = 21). Among the 42 ovariectomized rats, 21 received standard commercial food (OVX) and 21 received food with low calcium content (ESP). The mandibular first molars were extracted bilaterally 15 days after ovariectomy or sham surgery. The rats were weighed and killed at 7, 21 and 45 days after tooth extraction. The results were evaluated by descriptive microscopic analysis, histomorphometry of the trabecular and osteoid volume and mast cell counts. Analysis of the results indicated that trabecular volume and mast cell counts increased significantly over time, while osteoid volume decreased over time. Comparisons between the SHAM and OVX groups demonstrated no statistical differences, while comparison between the OVX and ESP groups indicated differences in trabecular volume and the number of mast cells. The data suggest that hormonal deficiency does not delay alveolar bone repair in OVX rats; however, oestrogen deficiency associated with calcium deficiency can lead to bone resorption through the activation of mast cells.
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Affiliation(s)
- Renata F D Prado
- Department of Physiotherapy, Cruzeiro Superior School - ESC, Cruzeiro, São Paulo, Brazil.
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14
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Machado GJR, Dias SMD, Bosco ÁF, Okamoto T, Bedran de Castro JC, Dornelles RCM. Action of Nicotine and Ovariectomy on Bone Regeneration After Tooth Extraction in Rats. J Oral Maxillofac Surg 2010; 68:2675-81. [DOI: 10.1016/j.joms.2010.04.018] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2008] [Revised: 04/13/2010] [Accepted: 04/23/2010] [Indexed: 11/26/2022]
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Seo BI, Joo SJ, Park JH, Roh SS, Kim SM, Choi HS, Ku SK. The Anti-osteoporotic Effect of Aqueous Extracts of Gastrodiae Rhizoma In Vitro and In Vivo. ACTA ACUST UNITED AC 2010. [DOI: 10.1248/jhs.56.422] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Bu Il Seo
- Department of Herbology, College of Oriental Medicine, Daegu Haany University
| | - Seok Joong Joo
- Department of Herbology, College of Oriental Medicine, Daegu Haany University
| | - Ji Ha Park
- Department of Herbology, College of Oriental Medicine, Daegu Haany University
| | - Seong Soo Roh
- Department of Herbology, College of Oriental Medicine, Daegu Haany University
| | - Seong Mo Kim
- Department of Korean Internal Medicine, College of Oriental Medicine, Daegu Haany University
| | - Hong Sik Choi
- Department of Korean Internal Medicine, College of Oriental Medicine, Daegu Haany University
| | - Sae Kwang Ku
- Department of Histology and Anatomy, College of Oriental Medicine, Daegu Haany University
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Shoji K, Basso N, Elsubeihi ES, Heersche JNM. Short-term effect of ovariectomy on osteoprogenitors in the healing rat mandibular incisor extraction socket. Osteoporos Int 2008; 19:1193-201. [PMID: 18250948 DOI: 10.1007/s00198-007-0558-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2007] [Accepted: 12/03/2007] [Indexed: 11/25/2022]
Abstract
UNLABELLED OVX increased the percentage of AP-positive CFU-F in healing rat mandible. The increase of the number of osteoprogenitors was not significant in rat mandible-derived cultures but was in femur-derived ones. This suggests that the effect of OVX on osteoprogenitors is either smaller or develops later in mandible relative to femur. INTRODUCTION Osteoprogenitors play an essential role in the regeneration process that leads to the successful integration of dental implants. However, it is unclear how systemic osteoporosis affects osteoprogenitors in oral bone. The present study was designed to determine the short-term effects of ovariectomy (OVX) on osteoprogenitors from the healing extraction socket in rat mandible. METHODS Six-month-old rats were ovariectomized (n=8) and control rats were left intact (n=8). Two weeks post-OVX, the right mandibular incisor was extracted. Four weeks post-extraction, the basal mandibular bone between the 1st and 3rd molar in the healing extraction socket was used to determine the number of fibroblastic progenitors (CFU-F), alkaline phosphatase-positive fibroblastic progenitors (AP-positive CFU-F), Dex-dependent osteoprogenitors (CFU-O Dex) and Prog-dependent osteoprogenitors (CFU-O Prog) using colony assays (n=5). Osteocalcin mRNA expression was evaluated using in situ hybridization (n=3). Data were analyzed using two-way ANOVA or Student's t-test. RESULTS OVX increased the percentage of AP-positive CFU-F in both mandible and femur. The number of CFU-O was increased only in femur. Osteocalcin mRNA expression in regenerating mandible was not statistically different between control and OVX animals. CONCLUSION Our results suggest that the effect of OVX on osteoprogenitors is either smaller or develops later in mandible relative to femur.
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Affiliation(s)
- K Shoji
- Division of Periodontology and Endodontology, Department of Oral Biology, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan.
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Chicarelli M, Ramos FMDM, Manzi FR, Novaes PD, Bóscolo FN, Almeida SMD. Effect of gamma rays on the bone repair process in rats with estrogen deficiency. Braz Oral Res 2008; 21:75-80. [PMID: 17384859 DOI: 10.1590/s1806-83242007000100013] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2006] [Accepted: 10/30/2006] [Indexed: 11/21/2022] Open
Abstract
This study aimed at evaluating the bone repair process in ovariectomized rats submitted to an irradiation procedure. For this purpose, one hundred rats were randomly divided in four experimental groups: control, ovariectomized, irradiated and irradiated/ovariectomized. A bone defect was made on all animals' tibias. Three days after surgery, only irradiated and irradiated/ovariectomized rats received 8 Gy of gamma rays on the lower limbs region. The animals were sacrificed 7, 14, 21 and 28 days after surgery in order to assess the repair process. It was possible to observe a delay in the bone repair process in the irradiated/ovariectomized group, in which there was a remarkable association between estrogen deficiency and ionizing radiation resulting in the reduction of newly formed bone production, thus accelerating the resorption process.
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Affiliation(s)
- Mariliani Chicarelli
- School of Dentistry, State University of Campinas, Faculty of Odontology of Piracicaba, Oral Radiology, Av. Limeira 901, Piracicaba, SP, Brazil, CEP 13414-018
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Gorustovich AA, Steimetz T, Nielsen FH, Guglielmotti MB. Histomorphometric Study of Alveolar Bone Healing in Rats Fed a Boron-Deficient Diet. Anat Rec (Hoboken) 2008; 291:441-7. [DOI: 10.1002/ar.20672] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Shin HD, Yang KJ, Park BR, Son CW, Jang HJ, Ku SK. Antiosteoporotic effect of Polycan, β-glucan from Aureobasidium, in ovariectomized osteoporotic mice. Nutrition 2007; 23:853-60. [PMID: 17884343 DOI: 10.1016/j.nut.2007.08.011] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2005] [Revised: 05/07/2007] [Accepted: 08/19/2007] [Indexed: 11/25/2022]
Abstract
OBJECTIVE We investigated the anti-osteoporotic effects of Polycan, a beta-glucan from Aureobasidium pullulans, in ovariectomized mice at doses of 31.25, 62.5, and 125 mg/kg. METHODS Polycan was administered orally once a day for 28 d to bilateral ovariectomized mice, beginning 4 wk after surgery. Changes in body weight, bone weight, bone mineral content, bone mineral density, failure load, histologic profiles, and histomorphometric analyses were determined, in addition to serum osteocalcin, calcium, and phosphorus levels. Alendronate was used as a reference drug. RESULTS Polycan significantly and dose-dependently suppressed decreases in bone weight, bone mineral content, failure load, bone mineral density, and serum calcium and phosphorus levels and the increase in serum osteocalcin levels. In addition, Polycan significantly suppressed decreases in histomorphometric parameters such as volume, length, and thickness of trabecular bone and thickness of cortical bone and the increase in osteoclast cells in the femur and tibia. CONCLUSION Although the effects of Polycan were generally modest and smaller than those of alendronate, the effects on cortical bone thickness were more favorable for Polycan than for alendronate. In addition, Polycan exhibited favorable effects on ovariectomy-induced osteoporosis. However, more long-term studies are needed to confirm the effects of Polycan on osteoporosis.
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Affiliation(s)
- Hyun Dong Shin
- Glucan Corp. Research Institute, Marine Biotechnology Center, Gwaebop-dong, Sasanggu, Busan, Republic of Korea
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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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Seo BI, Ku SK, Cha EM, Park JH, Kim JD, Choi HY, Lee HS. Effect of Mornidae Radix extracts on experimental osteoporosis in sciatic neurectomized mice. Phytother Res 2005; 19:231-8. [PMID: 15934024 DOI: 10.1002/ptr.1683] [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: 11/05/2022]
Abstract
The preventive and therapeutic effects of aqueous extracts of Mornidae Radix (MR) were observed in sciatic neurectomized mice, a disused osteoporotic model. The right hind limbs of 80 mice were neurectomized and 20 mice were sham-operated and served as a sham control. Then 50, 100 and 200 mg/kg of MR extracts were dosed 3 days after neurectomy for 6 weeks in the prevention study and were dosed 2 weeks after neurectomy for 12 weeks for the therapeutic study. After dosing with the MR extracts, the thickness of the hind limbs, tibia failure load, tibia bone mineral density (BMD), serum osteocalcin levels, tibia calcium (Ca) and phosphorus (P) contents were monitored with histomorphometrical changes of the tibia. In both the prevention and therapeutic studies, the MR extracts significantly and dose-dependently suppressed the decrease in hind limb thickness, tibia failure load, BMD, tibia Ca and P contents with an increase in serum osteoclacin levels. In addition, the MR extracts also significantly and dose-dependently suppressed the decrease in histomorphometrical parameters of the tibia such as volume, length and thickness of trabecular bone and thickness of cortical bone with an increase in osteoclast cells in both the prevention and therapeutic studies. Based on these results, the MR extracts may act as both a suppressor of bone resorption and an enhancer of bone formation in vivo and may have some favorable effects for preventing and treating the osteoporosis induced by sciatic neurectomy.
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Affiliation(s)
- Bu Il Seo
- College of Oriental Medicine, Daegu Haany University, Gyeongsan, 712-715, Republic of Korea
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Kim SY, Kim SG, Lim SC, Bae CS. Effects on bone formation in ovariectomized rats after implantation of tooth ash and plaster of Paris mixture. J Oral Maxillofac Surg 2004; 62:852-7. [PMID: 15218565 DOI: 10.1016/j.joms.2003.12.023] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
PURPOSE Our goal was to report on tooth ash and plaster of Paris mixture in bone defects in an ovariectomized rat osteoporosis model. MATERIALS AND METHODS Sixty rats were randomly assigned to 4 groups and each group was further divided into 3 subgroups: 4, 8, and 16 weeks after implantation. The defect was filled with different grafting conditions as follows: group 1, ovariectomy and nongraft group; group 2, ovariectomy and tooth ash-plaster graft group; group 3, nonovariectomy and nongraft group; and group 4, nonovariectomy and tooth ash-plaster graft group. Histologic sections and histomorphometric analysis of defects were obtained 4, 8, and 16 weeks after surgery. RESULTS For the 4-week ovariectomy group, there was significantly greater bone formation in tooth ash-plaster group compared with the nongraft group. In the nonovariectomy group, the tooth ash-plaster group also showed better bone formation than the nongraft group. However, there was no statistical significance. In both the ovariectomy and nonovariectomy groups, a significant increase in bone formation was observed according to the elapse of time. The nonovariectomy group showed increased new bone formation compared with the ovariectomy group, with the tooth ash-plaster group showing statistical significance in each subgroup (P =.048). CONCLUSIONS Ovariectomy acts as a negative factor in new bone formation. For a critical size bony defect, the tooth ash-plaster treatment of the osseous defect produces more stable, effective, and rapid new bone formation.
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Affiliation(s)
- So-Young Kim
- Oral Biology Research Institute, College of Dentistry, Chosun University, Gwangju, Korea
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