title: HPV DNA is associated with a subset of Schneiderian papillomas but does not correlate with p16(INK4a) immunoreactivity.
abstract: This study investigated the role of human papillomavirus (HPV) in Schneiderian papillomas (SPs) to determine whether HPV is associated with the pathogenesis of particular histologic subtypes and whether p16(INK4a) can be used as a surrogate marker for HPV detection. Twenty-seven papilloma specimens (19 inverted [IPs], 6 exophytic [EPs], 1 oncocytic [OP] and 1 mixed) were collected from 23 patients. Purified SP DNA extracts were tested for HPV by PCR using GP5 +/GP6 + primers; HPV genotyping was performed by dot blot hybridization. PCR positive specimens were screened for HPV by biotinyl-tyramide-based chromogenic in situ hybridization (CISH). Immunohistochemsistry (IHC) for the HPV L1 capsid protein and for p16(INK4a) was performed on all specimens. HPV was detected by PCR in 16/27 (59.3%) SPs; 9/19 (47.4%) IPs; 6/6 (100%) EPs [p = 0.051], and 1/1 (100%) mixed SP. HPV was not detected in the single OP. High risk genotypes were detected in 4/9 IPs (44.4%) and 0/6 EPs (0%) [p = 0.10]. Seven of 16 PCR positive SPs were also CISH positive for HPV: 5/6 EPs (83.3%) and 1/9 IP (11.1%) [p = 0.01]. IHC for the L1 capsid protein was positive in 2 SPs (1 EP and 1 mixed). p16(INK4a) staining was seen in 14/16 (87.5%) PCR positive SPs and in 10/11 (90.9%) PCR negative SPs (p = 1.00). In summary, this study demonstrates a strong association between HPV and EPs, however, its role in IPs remains less well-defined. Further, p16(INK4a) is not a useful surrogate marker for HPV detection across the various SPs.
authors.affiliation: Department of Pathology, University of Vermont, Burlington, VT, USA.
authors.forename: A A
authors.initials: AA
authors.lastname: Shah
authors.forename: M F
authors.initials: MF
authors.lastname: Evans
authors.forename: C S-C
authors.initials: CS
authors.lastname: Adamson
authors.forename: Z
authors.initials: Z
authors.lastname: Peng
authors.forename: V
authors.initials: V
authors.lastname: Rajendran
authors.forename: K
authors.initials: K
authors.lastname: Cooper
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D014408:Biomarkers, Tumor / Q000378:metabolism; D019941:Cyclin-Dependent Kinase Inhibitor p16 / Q000378:metabolism*; D004279:DNA, Viral; D005260:Female; D006801:Humans; D017403:In Situ Hybridization; D008297:Male; D008875:Middle Aged; D009297:Nasal Mucosa / Q000378:metabolism / Q000473:pathology / Q000821:virology*; D009669:Nose Neoplasms / Q000473:pathology / Q000821:virology*; D018308:Papilloma, Inverted / Q000378:metabolism / Q000473:pathology / Q000821:virology*; D027383:Papillomaviridae / Q000235:genetics*; D030361:Papillomavirus Infections / Q000378:metabolism / Q000473:pathology / Q000821:virology*; D016133:Polymerase Chain Reaction; D055815:Young Adult
chemical_list: D014408:Biomarkers, Tumor; D019941:Cyclin-Dependent Kinase Inhibitor p16; D004279:DNA, Viral
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