Correlation of chemokine ligands and its receptors with lymph node metastasis in Head and Neck Squamous Cell Carcinoma / Proteínas ósseas envolvidas na calcificação vascular de ratos urêmicos, paratireoidectomizados, alimentados com dieta rica e pobre em fósforo associada à infusão fixa de paratormônio

AUTOR(ES)
DATA DE PUBLICAÇÃO

2007

RESUMO

Local invasion and lymph nodal spread impact in the outcome of Head and Neck squamous cell carcinoma (HNSCC) patients (pts). We determined CXCR1-5, CCR7 and CX3CR1 mRNA expression by means of RNAse protection assay in 98 HNSCC primary tumors and 91 adjacent mucosa and 26 metastatic lymph nodes, correlating this data with outcome. CXCL12 and CCL19/CCL21, ligands for CXCR4 and CCR7, were determined in 38 tumor fragments, 33 adjacent mucosas and 25 de metastatic lymph nodes, by means of Quantitative Real-Time PCR. Tumors presented higher CXCR1 (P=0.013), CXCR3 (P=0.008) and CXCR4 mRNA (P=0.025) expression as compared to mucosa. No correlations are observed neither lymph nodal status nor tumor size impacted on chemokine receptor expression. Metastatic lymph nodes expressed more CXCR4, CXCR5, CCR7 and CX3CR1 (P<0.0001) as compared to matched tumors. We found a longer overall survival (OS) (P=0.048) and a trend toward longer disease free survival (DFS) (P=0.074) in CX3CR1 negative (n=17) as compared to positive pts (n=21) only in oral subgroup. The same occurred for CCR7 negative oral SCC, in terms of OS (P=0.024) and DFS (P=0.049). We conclude that, of the chemokine receptors here studied, CCR7 and CX3CR1 mRNA expression seems to better reflect outcome in oral subsite only. In addition, CCL21, a CCR7 ligand mRNAs is more expressed in metastatic lymph nodes than tumors (P=0.059). Further studies are warranted to confirm these results.

ASSUNTO(S)

carcinoma squamous cell chemokines proteínas morfogenéticas ósseas hormônio paratireóideo linfonodos ratos wistar uremia cxcr4 head and neck neoplasms receptors fósforo calcinose receptors chemokine

ACESSO AO ARTIGO

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