Apoptotic and proliferative status in HPV (+) and HPV (-) inverted papilloma patients. Correlation with local recurrence and clinicopathological variables
| Autor: | Agapi Kataki, Ilias P. Gomatos, Ioannis Yiotakis, Vassilis G. Gorgoulis, Leonidas Manolopoulos, Evagelos Giotakis, Manousos Konstantoulakis, Leonidas Alevizos, Dimitris Kandiloros, Katerina Tsimaratou |
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| Rok vydání: | 2011 |
| Předmět: |
Adult
Male Pathology medicine.medical_specialty Necrosis Genotype Molecular Sequence Data Nose Neoplasms Inverted papilloma Apoptosis Pathology and Forensic Medicine Flow cytometry Proliferating Cell Nuclear Antigen Paranasal Sinuses medicine Biomarkers Tumor Humans Nasal polyps Papillomaviridae Aged Cell Proliferation Retrospective Studies Aged 80 and over Papilloma Inverted biology medicine.diagnostic_test Base Sequence Cytochrome c Cell Biology Middle Aged medicine.disease Flow Cytometry Molecular biology Proliferating cell nuclear antigen Tumor Virus Infections DNA Viral biology.protein Immunohistochemistry Female medicine.symptom Neoplasm Recurrence Local |
| Zdroj: | Pathology, research and practice. 208(6) |
| ISSN: | 1618-0631 |
| Popis: | Inverted papilloma (IP) is a rare sinonasal benign lesion characterized by aggressive biological behavior. Our aim was to evaluate the expression of various proliferation and apoptotic markers and the presence of HPV genotypes in paraffin sections gathered from surgically treated IP patients. Immunohistochemistry for PCNA, bax, cytochrome c and caspase-8 and flow cytometry for the detection of apoptosis, necrosis and ki67 expression were performed. The identification of various HPV subtypes was achieved by nested PCR amplification. Nasal polyps (NP) and specimens from normal nasal epithelium (NE) were used as controls. PCNA was more frequently expressed in IP compared to NE ( p = 0.04) and caspase-8 and bax staining were less frequently observed in IP compared to NP ( p = 0.004 and p = 0.01 respectively) and NE ( p = 0.003 and p = 0.01, respectively). IP and NP presented significantly higher Ki67 flow cytometry values compared to NE ( p p = 0.02 respectively). Cytochrome c was more frequently expressed in IP specimens with more prominent inflammation ( p = 0.02). A low HPV DNA detection rate was observed. Neither HPV status nor any of the apoptotic or proliferative markers studied was associated with the patients’ clinicopathological characteristics. Increased Ki67 appeared to correlate with disease recurrence ( p = 0.01). Increased PCNA and Ki67 and decreased bax and caspase-8 expression indicate that cell proliferation is increased while apoptosis is inhibited in IP, explaining its biological behavior. |
| Databáze: | OpenAIRE |
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