Apoptotic and proliferative status in HPV (+) and HPV (-) inverted papilloma patients. Correlation with local recurrence and clinicopathological variables

Pathology, Research and Practice
Evagelos GiotakisIoannis Yiotakis

Abstract

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<0.001 and 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 ch...Continue Reading

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Citations

Nov 26, 2013·Pathology, Research and Practice·Agapi KatakiIoannis Yiotakis
Oct 19, 2017·Acta Biochimica Et Biophysica Sinica·Yongliang LiuXuezhong Li
Apr 13, 2018·American Journal of Rhinology & Allergy·Gino MarioniGiancarlo Ottaviano
Apr 11, 2014·American Journal of Rhinology & Allergy·Anna M PajorMagdalena Józefowicz-Korczyńska
Mar 17, 2016·American Journal of Rhinology & Allergy·Hwan-Jung RohSung-Lyong Hong
Oct 14, 2020·Reviews in Medical Virology·Rohit GuptaStephen K Tyring

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Apoptosis

Apoptosis is a specific process that leads to programmed cell death through the activation of an evolutionary conserved intracellular pathway leading to pathognomic cellular changes distinct from cellular necrosis