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Revista odontológica mexicana

Print version ISSN 1870-199X

Rev. Odont. Mex vol.10 n.1 Ciudad de México Mar. 2006

https://doi.org/10.22201/fo.1870199xp.2006.10.1.15930 

Trabajos originales

Determinación de células T CD3+, CD4+, CD8+, receptor de la célula T familias Vβ en biopsias de tejido gingival en pacientes con periodontitis crónica

Determination of T CD3+, CD4+, CD8+ cells, receptor of T cells family Vβ in gingival tissues in patients with chronic periodontitis

María Angela Martínez* 

Gisela Gratz* 

Angélica Burgos* 

Gloria Inés Lafaurie§ 

Juliette de Ávila§ 

Juan Carlos Munévar§ 

Jaime Castellanos§ 

Hernán Hurtado§ 

María Consuelo Romero§  ** 

* Residente de Periodoncia y Medicina Oral, Facultad de Odontología. Universidad El Bosque. Bogotá, Colombia.

§ Instituto, Unidad de Investigación Básica Oral, Facultad de Odontología. Universidad El Bosque. Bogotá, Colombia.


Resumen

Las lesiones periodontales establecidas están caracterizadas por infiltraciones densas de LB, LT y macrófagos. Se considera entonces interesante definir nuevas vías y evaluar y localizar los tipos celulares en diferentes sitios en tejido epitelial y conectivo para establecer el comportamiento entre sitios del mismo paciente y entre sitios entre pacientes. Se evaluaron 10 biopsias de 2 pacientes con diagnóstico de periodontitis crónica, las cuales fueron procesadas para su análisis inmunohistoquímico (anti CD3, CD4, CD8, Vβ2, 5.1, 6.7, 8 y 12) e histomorfométrico. El comportamiento de los marcadores CD3, CD4 y CD8 tanto en epitelio como en tejido conectivo, fue uniforme entre pacientes, entre sitios del mismo paciente y entre sitios entre pacientes. Se observaron diferencias significativas únicamente para el tejido con alta expresión de los marcadores en el tejido conectivo. La mayor expresión de las familias Vβ del TCR en los tejidos fue para Vβ6.7, Vβ8 y Vβ5.1, cuando se evaluaron en el tejido epitelial predominaron los marcadores Vβ8 y Vβ5.1 y en el tejido conectivo Vβ6.7, Vβ8. La expresión de TCR Vβ fue variable intersitio e intrasitio, esto demuestra un comportamiento totalmente individual, lo que podría indicar que el sistema inmune responde de manera local.

Palabras clave: Enfermedad periodontal; linfocito T (LT); receptor célula T (TCR); región variable de cadena beta TCR Vβ; superantígeno; linfocito B (LB)

Abstract

The established periodontal lesions are characterized by BL, TL and macrophage dense infiltrations. Its important to determine new ways, as well as to evaluate and localize the cellular types in different sites in epithelial and connective tissues to establish the behavior between different sites in the same patient and between sites of different patients. Ten biopsies with chronic periodontitis, were evaluated for immunohistochemistry for anti CD4, CD8, CD3, Vβ2, Vβ5.1, Vβ6.7, Vβ8, Vβ12. The first stains shown an uniform behavior in the epithelial and connective tissue between patients, between different sites in the same patient and between sites of different patients, demonstrating an homogeneous behavior. For all the variables, only significant differences were observed for the kind of tissue showing a strong expression in the connective tissue. The greater TCR expression of the variable families evaluated were to Vβ6.7, followed by Vβ8, Vβ5. The expression for all the TCR markers shows significant differences when the analysis was individualized through the epithelial tissue and the connective tissue. Although, Vβ8 y Vβ5.1 were predominant for epithelial tissue, and Vβ6.7, Vβ8 for connective tissue. The TCR Vβ expression intrasite and intersite was variable. This finding was extremely interest because demonstrates a totally individual behavior which could indicate that the immune system responds of local manner.

Key words: Periodontal disease; T lymphocyte (TL); T cell receptor(TCR); variable region of beta chain TCR Vβ; superantigen; B lymphocyte (BL)

Texto completo disponible sólo en PDF.

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** Dirección para correspondencia: María Consuelo Romero. Coordinadora Inmunogenética UIBO-Universidad El Bosque-Colombia. Correo electrónico: romeromaria@unbosque.edu.co

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