Detection of various types of human papillomavirus DNA, mainly belonging to the cutaneous-group, more frequently in normal tissue than in squamous cell carcinomas of the lip.
BACKGROUND
Mucosal high-risk human papillomaviruses (HPVs), such as type 16, are detectable in oral cancers, especially of the oropharynx and tonsils, and there is evidence that they play a pathogenetic role in some cases. However, information is limited about their significance for cancers of the vermilion of the lip.


OBJECTIVE
To determine the detection rate, types and localization of HPVs in squamous cell carcinomas (SCCs) of the lip.


METHODS
Nested PCR for cutaneous HPVs, including epidermodysplasia verruciformis-related HPV (EV-HPV), and single PCR for mucosal HPVs, were conducted for a total of 27 SCCs and normal samples from 30 individuals. Tyramide-based in situ hybridization (ISH) was also applied.


RESULTS
Various types of HPVs were detected, particularly from normal individuals. Among the kinds of the HPV types detected in this study, half were found by PCR using a primer pair, which we newly designed. The prevalence of HPV was 5 out of 27 SCCs (ca. 18%) and 10 out of 30 normal individuals (ca. 33%). They were the entire cutaneous-group except for two, from one SCC and one normal individual.


CONCLUSIONS
On the surface of the normal lip various types of mainly cutaneous-group HPVs may be present, but there does not appear to be any obvious association with SCCs developing in this site.
Department of Dermatology, Nagoya University Graduate School of Medicine, Tsurumai, Showa-ku, Nagoya 466-8550, Japan.
Makoto
M
Shimizu
Ayumi
A
Adachi
Shuyun
S
Zheng
Jun
J
Matsunaga
Yoshiyuki
Y
Kusakari
Hachiro
H
Tagami
Tetsuro
T
Nagasaka
Yasushi
Y
Tomita
D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000821:virology*; D017931:DNA Primers / Q000737:chemistry / Q000235:genetics; D004279:DNA, Viral; D004819:Epidermodysplasia Verruciformis / Q000821:virology; D005260:Female; D006801:Humans; D017403:In Situ Hybridization; D008048:Lip Neoplasms / Q000821:virology*; D008297:Male; D008875:Middle Aged; D008957:Models, Genetic; D009092:Mucous Membrane / Q000821:virology; D027383:Papillomaviridae / Q000235:genetics*; D016133:Polymerase Chain Reaction; D012867:Skin / Q000378:metabolism / Q000821:virology*
D017931:DNA Primers; D004279:DNA, Viral