Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes
Autor(a) principal: | |
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Data de Publicação: | 2023 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UEPB |
Texto Completo: | http://tede.bc.uepb.edu.br/jspui/handle/tede/4727 |
Resumo: | Giant cell lesions represent a set of pathological processes with similar histopathological features and varied biological behaviors. Despite intense scientific investigation, several aspects related to the pathogenesis and biological behavior of these lesions, with emphasis on the central giant cell lesion (CGCL), the peripheral giant cell lesion (PGCL) and the giant cell tumor (GCT), remain incompletely understood. In the development of several diseases, research has highlighted the participation of a family of low molecular weight proteins, called chemokines, and their receptors. Considering the pathological processes that affect bones, studies have demonstrated the involvement of the chemokine CXCL12 and the CXCR4 receptor in the migration of osteoclast precursor cells, osteoclastogenesis and bone resorption. However these important findings, little is known about the participation of these proteins in giant cell lesions. Thus, the present study aimed to evaluate the immunoexpression of CXCL12 and CXCR4 in CGCL, PGCL and GCT. The sample consisted of 10 cases of aggressive CGCL, 10 cases of non-aggressive CGCL, 10 cases of PGCL and 10 cases of GCT. The cases of LCCG and LPCG came from the archives of the Laboratories of Oral Histopathology of the Departments of Dentistry at the State University of Paraíba (UEPB) and the Federal University of Rio Grande do Norte (UFRN). Regarding the GCT cases, they were selected from the cases filed at the Getúlio Sales Diagnostics Laboratory (Natal, RN, Brazil). Only cases of CLCG with clinical and radiographic information that allowed classification into aggressive or non-aggressive lesions were included, according to criteria described by Chuong et al. (1986). In the immunohistochemical study, the percentages of cytoplasmic (CXCL12 and CXCR4) and nuclear (CXCR4) positivity in mononuclear cells (MC), non-cannibalistic multinucleated giant cells (ncMGC) and cannibalistic multinucleated giant cells (cGMC) were established in 5 fields of greater immunoreactivity (400×). The data obtained were statistically analyzed using the Mann-Whitney and Spearman correlation tests (p<0.05). Low median percentages of positivity for CXCL12 were found in all cell types, with no significant differences between groups (p > 0.05). Cytoplasmic expression of CXCR4 was observed in all groups evaluated, with high median percentages of positivity in ncGMC and cGMC. In MC, GCT exhibited higher cytoplasmic expression of CXCR4 when compared to PGCL (p = 0.007) and non-aggressive CGCL (p = 0.008). Regarding nuclear expression. of CXCR4, all groups showed low percentages of positivity. Compared with PGCL, GCT exhibited a higher median percentage of nuclear positivity for CXCR4 in MC (p = 0.022). Positive correlations were found between cytoplasmic and nuclear immunoexpression of CXCR4 in MC in non-aggressive CGCL (r = 0.914; p < 0.001), in PGCL (r = 0.882; p = 0.001) and in GCT (r = 0.867; p = 0.001). The results suggest a potential involvement of CXCR4 in the pathogenesis of CGCL, PGCL and GCT, possibly by ligand-independent cytoplasmic functions. This chemokine receptor could also contribute to differences in the biological behavior of CGCL. On the other hand, the relevance of CXCL12 in the development of the studied giant cell lesions can be variable. |
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Nonaka, Cassiano Francisco Weegehttp://lattes.cnpq.br/0224522010734716Medeiros, Fabianna da Conceição Dantas dehttp://lattes.cnpq.br/4615823591737544Gordón-Núñez, Manuel Antoniohttp://lattes.cnpq.br/6553619409299152http://lattes.cnpq.br/2246596908750344Medeiros, Vanessa Alves de2023-08-22T14:28:30Z2999-12-312023-07-31MEDEIROS, Vanessa Alves de. Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes. 2023. 92 f. Dissertação (Programa de Pós-Graduação em Odontologia - PPGO) - Universidade Estadual da Paraíba, Campina Grande, 2024.http://tede.bc.uepb.edu.br/jspui/handle/tede/4727Giant cell lesions represent a set of pathological processes with similar histopathological features and varied biological behaviors. Despite intense scientific investigation, several aspects related to the pathogenesis and biological behavior of these lesions, with emphasis on the central giant cell lesion (CGCL), the peripheral giant cell lesion (PGCL) and the giant cell tumor (GCT), remain incompletely understood. In the development of several diseases, research has highlighted the participation of a family of low molecular weight proteins, called chemokines, and their receptors. Considering the pathological processes that affect bones, studies have demonstrated the involvement of the chemokine CXCL12 and the CXCR4 receptor in the migration of osteoclast precursor cells, osteoclastogenesis and bone resorption. However these important findings, little is known about the participation of these proteins in giant cell lesions. Thus, the present study aimed to evaluate the immunoexpression of CXCL12 and CXCR4 in CGCL, PGCL and GCT. The sample consisted of 10 cases of aggressive CGCL, 10 cases of non-aggressive CGCL, 10 cases of PGCL and 10 cases of GCT. The cases of LCCG and LPCG came from the archives of the Laboratories of Oral Histopathology of the Departments of Dentistry at the State University of Paraíba (UEPB) and the Federal University of Rio Grande do Norte (UFRN). Regarding the GCT cases, they were selected from the cases filed at the Getúlio Sales Diagnostics Laboratory (Natal, RN, Brazil). Only cases of CLCG with clinical and radiographic information that allowed classification into aggressive or non-aggressive lesions were included, according to criteria described by Chuong et al. (1986). In the immunohistochemical study, the percentages of cytoplasmic (CXCL12 and CXCR4) and nuclear (CXCR4) positivity in mononuclear cells (MC), non-cannibalistic multinucleated giant cells (ncMGC) and cannibalistic multinucleated giant cells (cGMC) were established in 5 fields of greater immunoreactivity (400×). The data obtained were statistically analyzed using the Mann-Whitney and Spearman correlation tests (p<0.05). Low median percentages of positivity for CXCL12 were found in all cell types, with no significant differences between groups (p > 0.05). Cytoplasmic expression of CXCR4 was observed in all groups evaluated, with high median percentages of positivity in ncGMC and cGMC. In MC, GCT exhibited higher cytoplasmic expression of CXCR4 when compared to PGCL (p = 0.007) and non-aggressive CGCL (p = 0.008). Regarding nuclear expression. of CXCR4, all groups showed low percentages of positivity. Compared with PGCL, GCT exhibited a higher median percentage of nuclear positivity for CXCR4 in MC (p = 0.022). Positive correlations were found between cytoplasmic and nuclear immunoexpression of CXCR4 in MC in non-aggressive CGCL (r = 0.914; p < 0.001), in PGCL (r = 0.882; p = 0.001) and in GCT (r = 0.867; p = 0.001). The results suggest a potential involvement of CXCR4 in the pathogenesis of CGCL, PGCL and GCT, possibly by ligand-independent cytoplasmic functions. This chemokine receptor could also contribute to differences in the biological behavior of CGCL. On the other hand, the relevance of CXCL12 in the development of the studied giant cell lesions can be variable.As lesões de células gigantes representam um conjunto de processos patológicos com características histopatológicas semelhantes e comportamentos biológicos variados. Apesar de intensa investigação científica, diversos aspectos relacionados à patogênese e ao comportamento biológico dessas lesões, com destaque para a lesão central de células gigantes (LCCG), a lesão periférica de células gigantes (LPCG) e o tumor de células gigantes (TCG), permanecem incompletamente compreendidos. Considerando os processos patológicos que afetam os ossos, estudos têm enaltecido a participação da quimiocina CXCL12 e do receptor CXCR4 na migração de células precursoras de osteoclastos, osteoclastogênese e reabsorção óssea. Não obstante esses importantes achados, pouco se sabe sobre a participação dessas proteínas em lesões de células gigantes. Dessa forma, o presente estudo objetivou avaliar a imunoexpressão de CXCL12 e CXCR4 em LCCG, LPCG e TCG. A amostra foi composta por 10 casos de LCCG agressiva, 10 casos de LCCG não agressiva, 10 casos de LPCG e 10 casos de TCG. Os casos de LCCG e LPCG foram oriundos dos arquivos dos Laboratórios de Histopatologia Oral dos Departamentos de Odontologia da Universidade Estadual da Paraíba (UEPB) e da Universidade Federal do Rio Grande do Norte (UFRN). Em relação aos casos de TCG, foram selecionados a partir dos casos arquivados no Laboratório Getúlio Sales Diagnósticos (Natal, RN, Brasil). Foram incluídos apenas os casos de LCCG com informações clínicas e radiográficas que permitissem a classificação em lesões agressivas ou não agressivas, conforme critérios descritos por Chuong et al. (1986). No estudo imunoistoquímico, foram estabelecidos os percentuais de positividade citoplasmática (CXCL12 e CXCR4) e nuclear (CXCR4) nas células mononucleadas (CM), células gigantes multinucleadas não canibais (CGMnc) e células gigantes multinucleadas canibais (CGMc), em 5 campos de maior imunorreatividade (400×). Os dados obtidos foram analisados estatisticamente por meio dos testes de Mann-Whitney e de correlação de Spearman (p < 0,05). Foram constatados baixos percentuais medianos de positividade para CXCL12 em todos os tipos celulares, sem diferenças significativas entre os grupos (p > 0,05). Expresssão citoplasmática de CXCR4 foi observada em todos os grupos analisados, com altos percentuais medianos de positividade em CGMnc e CGMc. Nas CM, os TCG exibiram maior expressão citoplasmática de CXCR4 em comparação às LPCG (p = 0,007) e LCCG não agressivas (p = 0,008). Todos os grupos analisados apresentaram baixos percentuais de imunopositividade nuclear para CXCR4. Comparados às LPCG, os TCG exibiram maior percentual mediano de positividade nuclear para CXCR4 em CM (p = 0,022). Foram constatadas correlações positivas entre as imunoexpressões citoplasmáticas e nucleares de CXCR4 em CM nas LCCG não agressivas (r = 0,914; p < 0,001), nas LPCG (r = 0,882; p = 0,001) e nos TCG (r = 0,867; p = 0,001). Em conclusão, os resultados deste estudo sugerem um potencial envolvimento de CXCR4 na patogênese de LCCG, LPCG e TCG, possivelmente por funções citoplasmáticas independentes de ligante. Esse receptor de quimiocina também poderia contribuir para as diferenças no comportamento biológico das LCCG. Por outro lado, no desenvolvimento das lesões de células gigantes estudadas, a relevância de CXCL12 pode ser variável.Submitted by Vanessa Alves de Medeiros (vanessa.medeiros@aluno.uepb.edu.br) on 2023-08-21T23:51:53Z No. of bitstreams: 2 DS-VanessaAlvesDeMedeiros.pdf: 6295686 bytes, checksum: c94c0948d250bdd120cc915a3473738d (MD5) TermoDeposito_BDTD (1).pdf: 330750 bytes, checksum: 9a2ada615079f5a73d39b0af13ec39c9 (MD5)Approved for entry into archive by Jean Medeiros (jeanletras@uepb.edu.br) on 2023-08-22T14:14:15Z (GMT) No. of bitstreams: 2 DS-VanessaAlvesDeMedeiros.pdf: 6295686 bytes, checksum: c94c0948d250bdd120cc915a3473738d (MD5) TermoDeposito_BDTD (1).pdf: 330750 bytes, checksum: 9a2ada615079f5a73d39b0af13ec39c9 (MD5)Made available in DSpace on 2023-08-22T14:28:30Z (GMT). No. of bitstreams: 2 DS-VanessaAlvesDeMedeiros.pdf: 6295686 bytes, checksum: c94c0948d250bdd120cc915a3473738d (MD5) TermoDeposito_BDTD (1).pdf: 330750 bytes, checksum: 9a2ada615079f5a73d39b0af13ec39c9 (MD5) Previous issue date: 2023-07-31Coordenação de Aperfeiçoamento de Pessoal de Nível Superior - CAPESapplication/pdfporUniversidade Estadual da ParaíbaPrograma de Pós-Graduação em Odontologia - PPGOUEPBBrasilPró-Reitoria de Pós-Graduação e Pesquisa - PRPGPCélulas gigantesImunoistoquímicaReceptores de quimiocinasQuimiocinasGiant cellsChemokinesReceptors chemokineImmunohistochemistryODONTOLOGIA::CLINICA ODONTOLOGICAImunoexpressão de CXCL12 e CXCR4 em lesões de células gigantesinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesis188746850794111162600600600524871450381110278-1816740449898491657info:eu-repo/semantics/embargoedAccessreponame:Biblioteca Digital de Teses e Dissertações da UEPBinstname:Universidade Estadual da Paraíba (UEPB)instacron:UEPBORIGINALDS - Vanessa Alves de Medeiros.pdfDS - Vanessa Alves de Medeiros.pdfapplication/pdf6295686http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4727/2/DS+-+Vanessa+Alves+de+Medeiros.pdfc94c0948d250bdd120cc915a3473738dMD52Termo de Depósito BDTD.pdfTermo de Depósito BDTD.pdfapplication/pdf330750http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4727/3/Termo+de+Dep%C3%B3sito+BDTD.pdf9a2ada615079f5a73d39b0af13ec39c9MD53LICENSElicense.txtlicense.txttext/plain; charset=utf-81960http://tede.bc.uepb.edu.br/jspui/bitstream/tede/4727/1/license.txt6052ae61e77222b2086e666b7ae213ceMD51tede/47272023-08-22 11:29:28.038oai:tede.bc.uepb.edu.br: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Biblioteca Digital de Teses e Dissertaçõeshttp://tede.bc.uepb.edu.br/jspui/PUBhttp://tede.bc.uepb.edu.br/oai/requestbc@uepb.edu.br||opendoar:2023-08-22T14:29:28Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB)false |
dc.title.por.fl_str_mv |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes |
title |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes |
spellingShingle |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes Medeiros, Vanessa Alves de Células gigantes Imunoistoquímica Receptores de quimiocinas Quimiocinas Giant cells Chemokines Receptors chemokine Immunohistochemistry ODONTOLOGIA::CLINICA ODONTOLOGICA |
title_short |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes |
title_full |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes |
title_fullStr |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes |
title_full_unstemmed |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes |
title_sort |
Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes |
author |
Medeiros, Vanessa Alves de |
author_facet |
Medeiros, Vanessa Alves de |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Nonaka, Cassiano Francisco Weege |
dc.contributor.advisor1Lattes.fl_str_mv |
http://lattes.cnpq.br/0224522010734716 |
dc.contributor.referee1.fl_str_mv |
Medeiros, Fabianna da Conceição Dantas de |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/4615823591737544 |
dc.contributor.referee2.fl_str_mv |
Gordón-Núñez, Manuel Antonio |
dc.contributor.referee2Lattes.fl_str_mv |
http://lattes.cnpq.br/6553619409299152 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/2246596908750344 |
dc.contributor.author.fl_str_mv |
Medeiros, Vanessa Alves de |
contributor_str_mv |
Nonaka, Cassiano Francisco Weege Medeiros, Fabianna da Conceição Dantas de Gordón-Núñez, Manuel Antonio |
dc.subject.por.fl_str_mv |
Células gigantes Imunoistoquímica Receptores de quimiocinas Quimiocinas |
topic |
Células gigantes Imunoistoquímica Receptores de quimiocinas Quimiocinas Giant cells Chemokines Receptors chemokine Immunohistochemistry ODONTOLOGIA::CLINICA ODONTOLOGICA |
dc.subject.eng.fl_str_mv |
Giant cells Chemokines Receptors chemokine Immunohistochemistry |
dc.subject.cnpq.fl_str_mv |
ODONTOLOGIA::CLINICA ODONTOLOGICA |
description |
Giant cell lesions represent a set of pathological processes with similar histopathological features and varied biological behaviors. Despite intense scientific investigation, several aspects related to the pathogenesis and biological behavior of these lesions, with emphasis on the central giant cell lesion (CGCL), the peripheral giant cell lesion (PGCL) and the giant cell tumor (GCT), remain incompletely understood. In the development of several diseases, research has highlighted the participation of a family of low molecular weight proteins, called chemokines, and their receptors. Considering the pathological processes that affect bones, studies have demonstrated the involvement of the chemokine CXCL12 and the CXCR4 receptor in the migration of osteoclast precursor cells, osteoclastogenesis and bone resorption. However these important findings, little is known about the participation of these proteins in giant cell lesions. Thus, the present study aimed to evaluate the immunoexpression of CXCL12 and CXCR4 in CGCL, PGCL and GCT. The sample consisted of 10 cases of aggressive CGCL, 10 cases of non-aggressive CGCL, 10 cases of PGCL and 10 cases of GCT. The cases of LCCG and LPCG came from the archives of the Laboratories of Oral Histopathology of the Departments of Dentistry at the State University of Paraíba (UEPB) and the Federal University of Rio Grande do Norte (UFRN). Regarding the GCT cases, they were selected from the cases filed at the Getúlio Sales Diagnostics Laboratory (Natal, RN, Brazil). Only cases of CLCG with clinical and radiographic information that allowed classification into aggressive or non-aggressive lesions were included, according to criteria described by Chuong et al. (1986). In the immunohistochemical study, the percentages of cytoplasmic (CXCL12 and CXCR4) and nuclear (CXCR4) positivity in mononuclear cells (MC), non-cannibalistic multinucleated giant cells (ncMGC) and cannibalistic multinucleated giant cells (cGMC) were established in 5 fields of greater immunoreactivity (400×). The data obtained were statistically analyzed using the Mann-Whitney and Spearman correlation tests (p<0.05). Low median percentages of positivity for CXCL12 were found in all cell types, with no significant differences between groups (p > 0.05). Cytoplasmic expression of CXCR4 was observed in all groups evaluated, with high median percentages of positivity in ncGMC and cGMC. In MC, GCT exhibited higher cytoplasmic expression of CXCR4 when compared to PGCL (p = 0.007) and non-aggressive CGCL (p = 0.008). Regarding nuclear expression. of CXCR4, all groups showed low percentages of positivity. Compared with PGCL, GCT exhibited a higher median percentage of nuclear positivity for CXCR4 in MC (p = 0.022). Positive correlations were found between cytoplasmic and nuclear immunoexpression of CXCR4 in MC in non-aggressive CGCL (r = 0.914; p < 0.001), in PGCL (r = 0.882; p = 0.001) and in GCT (r = 0.867; p = 0.001). The results suggest a potential involvement of CXCR4 in the pathogenesis of CGCL, PGCL and GCT, possibly by ligand-independent cytoplasmic functions. This chemokine receptor could also contribute to differences in the biological behavior of CGCL. On the other hand, the relevance of CXCL12 in the development of the studied giant cell lesions can be variable. |
publishDate |
2023 |
dc.date.accessioned.fl_str_mv |
2023-08-22T14:28:30Z |
dc.date.issued.fl_str_mv |
2023-07-31 |
dc.date.available.fl_str_mv |
2999-12-31 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
MEDEIROS, Vanessa Alves de. Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes. 2023. 92 f. Dissertação (Programa de Pós-Graduação em Odontologia - PPGO) - Universidade Estadual da Paraíba, Campina Grande, 2024. |
dc.identifier.uri.fl_str_mv |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4727 |
identifier_str_mv |
MEDEIROS, Vanessa Alves de. Imunoexpressão de CXCL12 e CXCR4 em lesões de células gigantes. 2023. 92 f. Dissertação (Programa de Pós-Graduação em Odontologia - PPGO) - Universidade Estadual da Paraíba, Campina Grande, 2024. |
url |
http://tede.bc.uepb.edu.br/jspui/handle/tede/4727 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.program.fl_str_mv |
188746850794111162 |
dc.relation.confidence.fl_str_mv |
600 600 600 |
dc.relation.department.fl_str_mv |
524871450381110278 |
dc.relation.cnpq.fl_str_mv |
-1816740449898491657 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/embargoedAccess |
eu_rights_str_mv |
embargoedAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Estadual da Paraíba |
dc.publisher.program.fl_str_mv |
Programa de Pós-Graduação em Odontologia - PPGO |
dc.publisher.initials.fl_str_mv |
UEPB |
dc.publisher.country.fl_str_mv |
Brasil |
dc.publisher.department.fl_str_mv |
Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP |
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Universidade Estadual da Paraíba |
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Universidade Estadual da Paraíba (UEPB) |
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UEPB |
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Biblioteca Digital de Teses e Dissertações da UEPB |
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Biblioteca Digital de Teses e Dissertações da UEPB |
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Biblioteca Digital de Teses e Dissertações da UEPB - Universidade Estadual da Paraíba (UEPB) |
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bc@uepb.edu.br|| |
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