EcPV2 DNA in equine genital squamous cell carcinomas and normal genital mucosa
Por:
Bogaert, L, Willemsen, A, Vanderstraeten, E, Bracho, M, De Baere, C, Bravo, I and Martens, A
Publicada:
6 jul 2012
Resumen:
Squamous cell carcinoma (SCC) represents the most common genital malignant tumor in horses. Similar to humans, papillomaviruses (PVs) have been proposed as etiological agents and recently Equine papillomavirus type 2 (EcPV2) has been identified in a subset of genital SCCs.
The goals of this study were (1) to determine the prevalence of EcPV2 DNA in tissue samples from equine genital SCCs, penile intraepithelial neoplasia (PIN) and penile papillomas, using EcPV2-specific PCR, (2) to examine the prevalence of latent EcPV2 infection in healthy genital mucosa and (3) to determine genetic variability within EcPV2 and to disentangle phylogenetic relationships of EcPV2 among PVs.
EcPV2 DNA was detected in all but one penile SCC (15/16), in all PIN lesions (8/8) and penile papillomas (4/4). Additionally, EcPV2 DNA was demonstrated in one of two metastasized lymph nodes, one contact metastasis in the mouth, two vaginal and one anal lesion. In healthy horses, EcPV2 DNA was detected in 10% (4/39) of penile swabs but in none of vulvovaginal swabs (0/20). This study confirms the presence of EcPV2 DNA in equine genital SCCs and shows its involvement in anal lesions, a lymph node and contact metastases. Latent EcPV2 presence was also shown in normal male genital mucosa. We found that different EcPV2 variants cocirculate among horses and that EcPV2 is related to the Delta + Zeta PVs and is only a very distant relative of high-risk human PVs causing genital cancer. Thus, similar viral tropism and similar malignant outcome of the infection do not imply close evolutionary relationship. (C) 2012 Elsevier B.V. All rights reserved.
Filiaciones:
Bogaert, L:
Univ Ghent, Fac Vet Med, Dept Surg & Anaesthesiol Domest Anim, B-9820 Merelbeke, Belgium
:
Ctr Publ Hlth Res CSISP, Valencia 46020, Spain
Vanderstraeten, E:
Univ Ghent, Fac Vet Med, Dept Surg & Anaesthesiol Domest Anim, B-9820 Merelbeke, Belgium
:
Ctr Publ Hlth Res CSISP, Valencia 46020, Spain
De Baere, C:
Univ Ghent, Fac Vet Med, Dept Surg & Anaesthesiol Domest Anim, B-9820 Merelbeke, Belgium
:
Ctr Publ Hlth Res CSISP, Valencia 46020, Spain
Hosp Llobregat, Catalan Inst Oncol ICO, Barcelona 08907, Spain
Martens, A:
Univ Ghent, Fac Vet Med, Dept Surg & Anaesthesiol Domest Anim, B-9820 Merelbeke, Belgium
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