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Da Silva TR, Bomfim SRM, Cavalcanti FBP, Lopes WDZ, Utsonomiya YT, Cadioli FA. "Lysis and Concentration Technique" improves the parasitological diagnosis of Trypanosoma vivax. Vet Parasitol 2023; 323:110043. [PMID: 37826972 DOI: 10.1016/j.vetpar.2023.110043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 09/20/2023] [Accepted: 09/25/2023] [Indexed: 10/14/2023]
Abstract
The "Lysis and Concentration Technique" (LCTe) involves lysing red blood cells and concentrating parasites to increase the chances of visualization in low parasitemia and in scenarios of evaluators with less knowledge. The lysis of red blood cells reduced the time of diagnosis by 21 s, showing that the effect produced by the treatment is comparable to the effect of the experience in parasitological examination. In addition, the concentration of parasites was 39.18% higher for slides with high parasitemia and 131.03% for slides with low parasitemia in relation to the standard slide. LCTe proved to be inexpensive, with a total cost of approximately US$0.07 per slide made, which allows it to be easily implemented in most laboratories.
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Affiliation(s)
- Tayna Rosendo Da Silva
- São Paulo State University (Unesp), School of Agricultural and Veterinary Sciences, Veterinary Medicine Post-Graduation Program Jaboticabal, Via de Acesso Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil
| | - Suely Regina Mogami Bomfim
- São Paulo State University (Unesp), School of Veterinary Medicine, Araçatuba, Rua Clóvis Pestana 793, 16050-470 Araçatuba, SP, Brazil
| | - Fernanda Beatriz Pereira Cavalcanti
- São Paulo State University (Unesp), School of Agricultural and Veterinary Sciences, Veterinary Medicine Post-Graduation Program Jaboticabal, Via de Acesso Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil
| | - Welber Daniel Zanetti Lopes
- Universidade Federal de Goias, Institute of Tropical Pathology and Public Health, Bioscience and Technology Department, R. 235, s/n.º - Setor Leste Universitário, Goiania, GO, Brazil
| | - Yuri Tana Utsonomiya
- São Paulo State University (Unesp), School of Veterinary Medicine, Araçatuba, Rua Clóvis Pestana 793, 16050-470 Araçatuba, SP, Brazil
| | - Fabiano Antonio Cadioli
- São Paulo State University (Unesp), School of Agricultural and Veterinary Sciences, Veterinary Medicine Post-Graduation Program Jaboticabal, Via de Acesso Paulo Donato Castellane s/n, 14884-900 Jaboticabal, SP, Brazil; São Paulo State University (Unesp), School of Veterinary Medicine, Araçatuba, Rua Clóvis Pestana 793, 16050-470 Araçatuba, SP, Brazil.
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Azuma MM, Cardoso CDBM, Samuel RO, Pipa CB, Bomfim SRM, Narciso LG, Gomes-Filho JE, Cintra LTA. Omega-3 Fatty Acids Alter Systemic Inflammatory Mediators Caused by Apical Periodontitis. J Endod 2020; 47:272-277. [PMID: 33245969 DOI: 10.1016/j.joen.2020.11.015] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/30/2020] [Accepted: 11/11/2020] [Indexed: 12/18/2022]
Abstract
INTRODUCTION This study investigated the effects of omega-3 polyunsaturated fatty acids (ω-3 PUFAs) on serum inflammatory mediators of rats with pulp exposure-induced apical periodontitis. METHODS Forty male Wistar rats were divided into the following groups: control, untreated rats (C); control rats treated with ω-3 PUFAs (C-O); rats with pulp exposure-induced apical periodontitis (AP); and rats with pulp exposure-induced apical periodontitis treated with ω-3 PUFAs (AP-O). ω-3 PUFAs were administered orally once a day for 15 days before pulp exposure and continued for 30 days after pulp exposure. The rats were sacrificed, and then blood and jaw samples were collected. Blood analysis was conducted to determine the total number of leukocytes including neutrophils, monocytes, and lymphocytes. Proinflammatory cytokines tumor necrosis factor alpha, interleukin (IL) 6, and IL-17 were quantified by enzyme-linked immunosorbent assay. Histologic analysis was performed to confirm the development of apical periodontitis. The data were statistically evaluated using analysis of variance and the Tukey posttest. The significance level was set at 5%. RESULTS The development of apical periodontitis was confirmed in all infected groups. Bone destruction was larger in the AP group compared with the AP-O group (P < .05). Blood analysis showed that the AP and AP-O groups showed higher numbers of lymphocytes, leukocytes, monocytes, eosinophils, and expressions of tumor necrosis factor alpha and IL-6 compared with the C and C-O groups (P < .05). In contrast, the presence of leukocytes, lymphocytes, and the expression of IL-6 decreased in the AP-O group compared with the AP group (P < .05). CONCLUSIONS ω-3 PUFA supplementation influences the systemic effects caused by apical periodontitis, decreasing the number of leukocytes, lymphocytes, and IL-6 in rat blood.
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Affiliation(s)
- Mariane Maffei Azuma
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil; Department of Cariology, Restorative Sciences and Endodontics, University of Michigan, Ann Arbor, Michigan
| | - Carolina de Barros Morais Cardoso
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - Renata Oliveira Samuel
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil; Department of Clinical Dentistry, Dental School, University of Uberaba, Uberaba, Minas Gerais, Brazil
| | - Camila Barbosa Pipa
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - Suely Regina Mogami Bomfim
- Department of Clinic and Surgery and Animal Reproduction, São Paulo State University (Unesp), Araçatuba Veterinary Medicine, São Paulo, Brazil
| | - Luis Gustavo Narciso
- Department of Clinic and Surgery and Animal Reproduction, São Paulo State University (Unesp), Araçatuba Veterinary Medicine, São Paulo, Brazil
| | - João Eduardo Gomes-Filho
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil
| | - Luciano Tavares Angelo Cintra
- Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, São Paulo, Brazil.
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de Almeida JM, Pazmino VFC, Novaes VCN, Bomfim SRM, Nagata MJH, Oliveira FLP, Matheus HR, Ervolino E. Chronic consumption of alcohol increases alveolar bone loss. PLoS One 2020; 15:e0232731. [PMID: 32817640 PMCID: PMC7446912 DOI: 10.1371/journal.pone.0232731] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 07/22/2020] [Indexed: 02/04/2023] Open
Abstract
This study evaluated the effects of the chronic consumption of different concentrations of alcohol on the experimental periodontitis (EP). 160 rats were divided into 4 groups: (EP-NT) rats with EP and no alcohol exposure; (EP-A14) rats with EP exposed to 14% alcohol; (EP-A25) rats with EP exposed to 25% alcohol; (EP-A36) rats with EP exposed to 36% alcohol. The animals from the EP-A14, EP-A25 and EP-A36 groups were subjected to different concentrations of alcohol 30 days before EP induction. The histological characteristics, percentage of bone in the furcation (PBF) and bone metabolism in the furcation region were evaluated. The PBF and tartrate-resistant acid phosphatase (TRAP) data were subjected to statistical analysis. The EP-A14, EP-A25 and EP-A36 groups had lower PBFs compared with the EP-NT group. A more severe inflammatory process and a greater number of TRAP+ cells were also observed. In the EP-A14, EP-A25 and EP-A36 groups, the inflammatory process became more severe as the ingested alcoholic concentration increased. An increase in RANKL immunolabeling and a significantly higher number of TRAP+ cells were also observed. We conclude that chronic alcohol consumption increases the severity of experimental periodontitis in a dose-dependent manner by increasing the magnitude of local inflammatory responses and stimulating alveolar bone resorption.
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Affiliation(s)
- Juliano Milanezi de Almeida
- Department of Diagnosis and Surgery—Division of Periodontics, São Paulo State University (Unesp), School of Dentistry, Araçatuba, SP, Brazil
- * E-mail:
| | - Victor Fabrizio Cabrera Pazmino
- Department of Diagnosis and Surgery—Division of Periodontics, São Paulo State University (Unesp), School of Dentistry, Araçatuba, SP, Brazil
| | - Vivian Cristina Noronha Novaes
- Department of Diagnosis and Surgery—Division of Periodontics, São Paulo State University (Unesp), School of Dentistry, Araçatuba, SP, Brazil
| | - Suely Regina Mogami Bomfim
- Department of Clinic, Surgery and Animal Reproduction, São Paulo State University (Unesp), School of Veterinary Medicine, Araçatuba, SP, Brazil
| | - Maria José Hitomi Nagata
- Department of Diagnosis and Surgery—Division of Periodontics, São Paulo State University (Unesp), School of Dentistry, Araçatuba, SP, Brazil
| | - Fred Lucas Pinto Oliveira
- Department of Diagnosis and Surgery—Division of Periodontics, São Paulo State University (Unesp), School of Dentistry, Araçatuba, SP, Brazil
| | - Henrique Rinald Matheus
- Department of Diagnosis and Surgery—Division of Periodontics, São Paulo State University (Unesp), School of Dentistry, Araçatuba, SP, Brazil
| | - Edilson Ervolino
- Department of Basic Sciences, São Paulo State University (Unesp), School of Dentistry, Araçatuba, SP, Brazil
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Conti LC, Segura-Egea JJ, Cardoso CBM, Benetti F, Azuma MM, Oliveira PHC, Bomfim SRM, Cintra LTA. Relationship between apical periodontitis and atherosclerosis in rats: lipid profile and histological study. Int Endod J 2020; 53:1387-1397. [PMID: 32573791 DOI: 10.1111/iej.13350] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2020] [Revised: 06/12/2020] [Accepted: 06/16/2020] [Indexed: 12/12/2022]
Abstract
AIM To investigate the relationship between apical periodontitis and atherosclerosis in rats by lipid profile and carotid artery intima tunic measurement, and histological and histometric evaluation of periapical lesions. METHODOLOGY Forty male Wistar rats were allocated into four groups: control (C), with apical periodontitis (AP), with atherosclerosis (AT) and with AP and AT (AP + AT). Atherosclerosis was induced using a high-lipid diet associated with a surgical ligature in the carotid artery and a super dosage of vitamin D3 . AP was induced via pulp exposure to the oral environment. At 45 and 75 days, serum levels of total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C) and low-density lipoprotein cholesterol (LDL-C) were measured. The maxillary and mandibular jaws and carotid artery were collected and processed for histological analysis. The Kruskal-Wallis or Mann-Whitney test was performed for nonparametric data, and the Tukey's or Student's t-test was performed for parametric data (P < 0.05). RESULTS In nonatherosclerotic animals, the induction of apical periodontitis increased TG levels significantly, from 63.1 ± 11.4 mg dL-1 in group C to 88.2 ± 7.9 mg dL-1 in the AP group (P < 0.05). The induction of AP was associated with a trend for higher TC and LDL-C levels in atherosclerotic animals (P > 0.05); however, it only significantly increased TG levels, from 93.2 ± 18.0 mg dL-1 in AT group to 121.9 ± 14.5 mg dL-1 in the AP + AT group (P < 0.05). Animals in the AP + AT group had a 36.5% increase in the thickness of the carotid intima tunic when compared with the AT group (P < 0.05). The intensity of the inflammatory infiltrate was significantly larger in the AP + AT group when compared with AP group (P < 0.05). The AP + AT group exhibited significantly greater alveolar bone loss, with a periapical lesion size of 206.4 ± 56.3 × 104 μm2 , compared with 151.4 ± 49.1 × 104 μm2 in the AP group (P < 0.05). CONCLUSION Apical periodontitis influenced triglyceride levels, increasing them even in the absence of atherosclerosis, and influenced the increase in the thickness of the carotid artery intima tunic in the presence of atherosclerosis. Atherosclerosis intensified the inflammatory reaction and increased bone resorption in periapical lesions.
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Affiliation(s)
- L C Conti
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - J J Segura-Egea
- Endodontic Section, Department of Stomatology, School of Dentistry, University of Sevilla, Sevilla, Spain
| | - C B M Cardoso
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - F Benetti
- Endodontic Section, Department of Restorative Dentistry, School of Dentistry, Federal University of Minas Gerais, Belo Horizonte, MG, Brazil
| | - M M Azuma
- Department of Cariology, Restorative Sciences and Endodontics, University of Michigan, Ann Arbor, MI, USA
| | - P H C Oliveira
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - S R M Bomfim
- Department Clinic and Surgery and Animal Reproduction, Araçatuba Veterinary Medicine, São Paulo State University (Unesp), Araçatuba, SP, Brazil
| | - L T A Cintra
- Endodontic Section, Department of Preventive and Restorative Dentistry, School of Dentistry, São Paulo State University (Unesp), Araçatuba, SP, Brazil
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Azuma MM, Gomes-Filho JE, Cardoso CDBM, Pipa CB, Narciso LG, Bomfim SRM, Jacinto RDC, Cintra LTA. Omega 3 Fatty Acids Reduce the Triglyceride Levels in Rats with Apical Periodontitis. Braz Dent J 2018; 29:173-178. [PMID: 29898064 DOI: 10.1590/0103-6440201801702] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2017] [Accepted: 11/20/2017] [Indexed: 12/17/2022] Open
Abstract
The aim of this study was to evaluate the influence of the prophylactic and therapeutic supplementation with omega 3 polyunsaturated fatty acids (w-3 PUFAs) on the lipid profile and periapical bone resorption in rats with apical periodontitis. Forty male rats were divided into groups: control rats (C), rats treated with w-3 PUFAs (C+O), rats with pulp exposure-induced apical periodontitis (AP), and rats with AP treated with w-3 PUFAs (AP+O). The administration of w-3 PUFAs was carried out orally once a day for 15 days before pulp exposure and, subsequently, for an additional 30 days after pulp exposure. AP was induced by exposing pulpal tissues to the oral environment. The samples were collected after 30 days. Triglycerides and cholesterol levels were enzymatically measured using the Trinder method. The jaws were collected and submitted for histological analysis. Two-way analysis of variance and Kruskal-Wallis tests were used for statistical analysis, and the significance was set at p<0.05. The triglyceride levels of the AP group were significantly higher than those of the C, C+O and AP+O groups (p<0.05). However, the difference in the cholesterol levels among the groups was not significant (p>0.05). Rats with AP showed larger areas of bone resorption as well as higher inflammatory intensity compared with rats with AP supplemented with w-3 PUFAs. It may be concluded that the presence of multiple AP foci increased the triglyceride levels. In addition, omega 3 supplementation might reduce these levels in rats with AP, as well as the bone resorption areas of periapical tissues.
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Affiliation(s)
- Mariane Maffei Azuma
- Endodontics, Araçatuba Dental School, UNESP - Universidade Estadual Paulista, São Paulo, SP, Brazil
| | - João Eduardo Gomes-Filho
- Endodontics, Araçatuba Dental School, UNESP - Universidade Estadual Paulista, São Paulo, SP, Brazil
| | | | - Camila Barbosa Pipa
- Endodontics, Araçatuba Dental School, UNESP - Universidade Estadual Paulista, São Paulo, SP, Brazil
| | - Luis Gustavo Narciso
- Clinic and Surgery and Animal Reproduction, Araçatuba School of Veterinary Medicine, UNESP - Universidade Estadual Paulista, São Paulo, SP, Brazil
| | - Suely Regina Mogami Bomfim
- Clinic and Surgery and Animal Reproduction, Araçatuba School of Veterinary Medicine, UNESP - Universidade Estadual Paulista, São Paulo, SP, Brazil
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Cintra LTA, da Silva Facundo AC, Prieto AKC, Sumida DH, Narciso LG, Mogami Bomfim SR, Oliveira e Silva C, Dezan-Júnior E, Gomes-Filho JE. Blood profile and histology in oral infections associated with diabetes. J Endod 2014; 40:1139-44. [PMID: 25069921 DOI: 10.1016/j.joen.2014.01.034] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2013] [Revised: 11/19/2013] [Accepted: 01/21/2014] [Indexed: 12/11/2022]
Abstract
INTRODUCTION We aimed to investigate the relationship between blood profile and histologic findings in both apical periodontitis (AP) and periodontal disease (PD) associated with diabetes. METHODS Wistar rats (N = 80) were assigned to the following 8 groups: control, AP, PD, AP associated with PD, diabetes, diabetes with AP, diabetes with PD, and diabetes with AP and PD. Diabetes mellitus (DM) was induced with streptozotocin, AP was induced by exposure to the oral environment, and PD was induced using periodontal ligature. After 30 days, blood samples were collected, and the rats were euthanized. Subsequently, the maxillae were processed for light microscopy. Hematologic examinations were conducted to determine the total number of erythrocytes and leukocytes, erythrocyte constant, and blood glucose level. One-way analysis of variance and Kruskal-Wallis tests were used for statistical analysis, and the significance was set at P < .05. RESULTS A significant correlation was found between the histologic findings and blood parameters. CONCLUSIONS In conclusion, diabetes accelerated the development and progression of AP and PD in the rats and caused an increase in the average erythrocyte volume as well as the leukocyte and neutrophil counts. Oral infections increase the total number of leukocytes, the number of neutrophils and lymphocytes, and blood glucose concentrations in DM rats.
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Affiliation(s)
| | | | | | - Dóris Hissako Sumida
- Department of Basic Science, Araçatuba Dental School, Universidade Estadual Paulista, São Paulo, Brazil
| | - Luís Gustavo Narciso
- Department of Clinic and Surgery and Animal Reproduction, Araçatuba Veterinary Medicine, Universidade Estadual Paulista, São Paulo, Brazil
| | - Suely Regina Mogami Bomfim
- Department of Clinic and Surgery and Animal Reproduction, Araçatuba Veterinary Medicine, Universidade Estadual Paulista, São Paulo, Brazil
| | | | - Eloi Dezan-Júnior
- Department of Endodontics, Araçatuba Dental School, Universidade Estadual Paulista, São Paulo, Brazil
| | - João Eduardo Gomes-Filho
- Department of Endodontics, Araçatuba Dental School, Universidade Estadual Paulista, São Paulo, Brazil
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Momo C, Rocha NADS, Moreira PRR, Munari DP, Bomfim SRM, Rozza DB, Vasconcelos RDO. Morphological changes and parasite load of the adrenal from dogs with visceral leishmaniasis. Rev Bras Parasitol Vet 2014; 23:30-5. [DOI: 10.1590/s1984-29612014004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Accepted: 01/30/2014] [Indexed: 11/21/2022]
Abstract
The objective of this study was to analyze morphological changes and parasite loads in the adrenal gland from 45 dogs with visceral leishmaniasis (VL). The animals were from the Zoonosis Control Center of Araçatuba, state of São Paulo, which is an endemic region for the disease. These animals were euthanized due to positive diagnoses of VL. The dogs were classified into asymptomatic, oligosymptomatic and symptomatic groups. The parasite load was determined by immunohistochemistry, using VL-positive dog hyperimmune serum. Nine dogs showed an inflammatory infiltrate composed, predominantly, of plasma cells and macrophages. However, only eight dogs showed macrophages with amastigote forms of the parasite, immunolabeled in the cytoplasm. The medullary and reticular layers were the most affected areas, possibly due to a favorable microenvironment created by hormones in these regions. The density of parasites in the glandular tissue was not associated with clinical signs of VL (P > 0.05). However, the presence of the parasite was always associated with the presence of a granulomatous inflammatory infiltrate. This gland may not be an ideal place for the parasite's multiplication, but the presence of injuries to the glandular tissue could influence the dog's immune system, thus favoring the parasite's survival in the host's different organs.
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Colenci R, da Silva Assunção LR, Mogami Bomfim SR, de Assis Golim M, Deffune E, Penha Oliveira SH. Bone marrow mesenchymal stem cells stimulated by bFGF up-regulated protein expression in comparison with periodontal fibroblasts in vitro. Arch Oral Biol 2013; 59:268-76. [PMID: 24581848 DOI: 10.1016/j.archoralbio.2013.11.017] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Revised: 08/14/2013] [Accepted: 11/30/2013] [Indexed: 11/19/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate, in vitro, the role of bFGF in the proliferation and expression of collagen type I and fibronectin of dog bone marrow mesenchymal stem cells (dBMMSCs) in comparison with the expression of the same proteins in dog periodontal fibroblasts (dPLFs). DESIGN dBMMSCs from the iliac crest were cultivated in Dulbecco's Modified Eagle's Medium (DMEM). Flow cytometry analysis (FCA) was used to characterize dBMMSC. Cells were stimulated with bFGF (1, 5 and 10 ng/mL) after 24 and 48 h. Real time RT-PCR was performed to verify collagen type I and fibronectin expressions. MTT assay was used to confirm cellular proliferation. Statistical analyses were performed (ANOVA and Kruskal-Wallis tests; p<0.05). RESULTS FCA showed 55.98% of CD34+ and 32.67% of CD90+ after bone marrow aspiration; 3.33% of CD34+ and 33.0% of CD90+ before P1. After P2, 10.54% of dBMMSCs expressed CD90, whereas after P3, this number decreased to 1.58%. dPLFs presented 4.04% of CD90+ and 1.05% of CD34+ after P3. MTT evaluation showed increase in dBMSC proliferation with 5 ng/mL bFGF-stimulus after 24-h. Both collagen I and fibronectin expression were very similar between the two cells groups after 24-h stimulation with 1 ng/mL bFGF concentration. Fibronectin and collagen I expressions were higher after 24-h stimulation with 5 ng/mL bFGF. CONCLUSION dBMMSCs (1 ng/mL-bFGF stimulus after 24 h) are very similar to dPLFs as regards morphological and immunostaining characteristics, and collagen and/or fibronectin production. The dBMMSCs presented the highest protein expression rates with 5 ng/mL-bFGF stimulus after 24-h.
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Affiliation(s)
- Renato Colenci
- DDS, School of Dentistry, UNESP - Univ. Estadual Paulista, São Paulo, Brazil
| | | | - Suely Regina Mogami Bomfim
- Department of Clinics, Surgery and Animal Reproduction, School of Veterinary Medicine, UNESP - Univ. Estadual Paulista, São Paulo, Brazil
| | - Marjorie de Assis Golim
- Laboratory of Flow Cytometry, Botucatu Blood Center, School of Medicine, UNESP - Univ. Estadual Paulista, São Paulo, Brazil
| | - Elenice Deffune
- Laboratory of Cellular Engineering, Botucatu Blood Center, School of Medicine, UNESP - Univ. Estadual Paulista, São Paulo, Brazil
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Gomes-Filho JE, Tobias Duarte PC, Ervolino E, Mogami Bomfim SR, Xavier Abimussi CJ, Mota da Silva Santos L, Lodi CS, Penha De Oliveira SH, Dezan E, Cintra LTA. Histologic Characterization of Engineered Tissues in the Canal Space of Closed-apex Teeth with Apical Periodontitis. J Endod 2013; 39:1549-56. [DOI: 10.1016/j.joen.2013.08.023] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Revised: 08/14/2013] [Accepted: 08/16/2013] [Indexed: 11/27/2022]
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Reichert da Silva Assunção L, Colenci R, Ferreira do-Amaral CC, Sonoda CK, Mogami Bomfim SR, Okamoto R, de Assis Golim M, Deffune E, Percinoto C, Penha de Oliveira SH. Periodontal tissue engineering after tooth replantation. J Periodontol 2010; 82:758-66. [PMID: 21054226 DOI: 10.1902/jop.2010.100448] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND Blood-derived products, platelet-poor plasma (PPP) and platelet-rich plasma (PRP), constitute an approach in the enhancement of tissue healing. PRP has also been used as a scaffold for bone marrow stem cells in tissue engineering. This study evaluates the effect of PPP, calcium chloride-activated PRP (PRP/Ca), calcium chloride- and thrombin-activated PRP (PRP/Thr/Ca), and bone marrow mononuclear cells and PRP/Ca (BMMCs/PRP/Ca) on the healing of replanted dog teeth. METHODS After 30 minutes of extraction, teeth were replanted with 1) no material (control); 2) PPP; 3) PRP/Ca; 4) PRP/Thr/Ca; or 5) BMMCs/PRP/Ca. Histologic, histomorphometric, and immunohistochemical analysis was assessed 120 days after replantation. Data from histomorphometric analysis were analyzed statistically (analysis of variance, Tukey; P <0.05). Quantitative immunohistochemical analysis was analyzed by Kruskal-Wallis and Dunn post hoc test (P <0.05). RESULTS Flow cytometry analysis showed 55.98% of CD34(+) and 32.67% of CD90/Thy-1 for BMMCs sample. BMMCs/PRP/Ca presented the largest areas of replacement resorption characterized by osseous ingrowth into cementum (P <0.05), with intense immunomarcation for tartrate-resistant acid phosphatase. The PRP/Ca group also showed areas of replacement resorption with significant immunomarcation for osteopontin. PRP/Thr/Ca presented no replacement resorption. PPP showed areas of inflammatory resorption, with immunomarcation for tartrate-resistant acid phosphatase. CONCLUSIONS The results suggest that platelets activated with thrombin play an important role in the healing of tissues after tooth replantation. Additional studies are necessary to test other materials, because PRP/Ca did not present an appropriate scaffold for undifferentiated cells in the treatment of avulsed teeth.
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Messora MR, Nagata MJH, Mariano RC, Dornelles RCM, Bomfim SRM, Fucini SE, Garcia VG, Bosco AF. Bone healing in critical-size defects treated with platelet-rich plasma: a histologic and histometric study in rat calvaria. J Periodontal Res 2008; 43:217-23. [PMID: 18302625 DOI: 10.1111/j.1600-0765.2007.01017.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND OBJECTIVE The purpose of this study was to analyze histologically the influence of autologous platelet-rich plasma on bone healing in surgically created critical-size defects in rat calvaria. MATERIAL AND METHODS Thirty-two rats were divided into two groups: the control group (group C) and the platelet-rich plasma group. An 8-mm-diameter critical-size defect was created in the calvarium of each animal. In group C the defect was filled by a blood clot only. In the platelet-rich plasma group, 0.35 mL of platelet-rich plasma was placed in the defect and covered by 0.35 mL of platelet-poor plasma. Both groups were divided into subgroups (n = 8) and killed at either 4 or 12 wk postoperatively. Histometric (using image-analysis software) and histologic analyses were performed. The amount of new bone formed was calculated as a percentage of the total area of the original defect. Percentage data were transformed into arccosine for statistical analysis (analysis of variance, Tukey, p < 0.05). RESULTS No defect completely regenerated with bone. The platelet-rich plasma group had a statistically greater amount of bone formation than group C at both 4 wk (17.68% vs. 7.20%, respectively) and 12 wk (24.69% vs. 11.65%, respectively) postoperatively. CONCLUSION Within the limits of this study, it can be concluded that platelet-rich plasma placed in the defects and covered by platelet-poor plasma significantly enhanced bone healing in critical-size defects in rat calvaria.
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Affiliation(s)
- M R Messora
- Division of Periodontics, Department of Surgery and Integrated Clinic, Dental School of Araçatuba, São Paulo State University, Brazil
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