SciELO - Scientific Electronic Library Online

vol.11 issue2Neoplastic trigeminal neuropathy: presentation of 7 cases author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links

  • On index processCited by Google
  • Have no similar articlesSimilars in SciELO
  • On index processSimilars in Google


Medicina Oral, Patología Oral y Cirugía Bucal (Internet)

On-line version ISSN 1698-6946


SANTOS GARCIA, Antonio et al. E-cadherina, laminin and collagen IV expression in the evolution from dysplasia to oral squamous cell carcinoma. Med. oral patol. oral cir.bucal (Internet) [online]. 2006, vol.11, n.2, pp.100-105. ISSN 1698-6946.

Objectives: Study the loss or reduction of the cellular adhesion mediated for E-cadherin in oral leukoplakias, oral squamous cell carcinomas and metastatic nodules. Study the loss of continuity of the laminin and collagen IV expression in the epithelial basal membrane from the biological development of the oral leukoplakias and oral carcinomas. Material and method: we have studied 124 samples of patient payees leukoplakias and oral carcinomas with diverse diagnosis that embrace from normal epithelium (13 samples), mild dysplasias (2), moderate dysplasias (12), "in situ" carcinomas (13), microinvasive carcinomas (11) oral squamous cell carcinomas (64 samples) and metastatic nodules (9). 7 blocks of tissue microarrays were built with needle of 2mm and was carried out a study by means of immunohistochemical technique for E-cadherin (clone 36, Biogenex), Laminin (078P, Biogenex) and Collagen IV (PHM12, Biogenex). Results: In Mild and Moderate Dysplasias the results present loss of E-cadherin, Laminin, and Collagen IV (20%) expression. "in situ" and microinvasive carcinomas, the results presented loss of E-cadherin expression (73%), and loss in Laminin and Collagen IV expression (57%). In the squamous cell carcinomas , we find E-cadherin underexpression (90%) and discontinuity in the Basal Membrane. (70%). All the metastatic nodules presented loss of E-cadherin expression and discontinuity in Laminin and Collagen IV expression. Conclusions: The loss of E-cadherin expression is increased when increasing the dysplasia grade of lesions. The loss of continuity in the laminin and Collagen IV expression follow a parallel evolution from dysplasias to metastatic nodules. The underexpression of the three markers has been significant in the evolution of the oral lesions.

Keywords : Leucoplasia; oral cancer; E-cadherin; Laminin; Collagen IV; tissue microarrays; immunohistochemistry.

        · abstract in Spanish     · text in English | Spanish     · English ( pdf ) | Spanish ( pdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License