| psittacid herpesviruses associated with mucosal papillomas in neotropical parrots. | mucosal papillomas are relatively common lesions in several species of captive neotropical parrots. they cause considerable morbidity and in some cases, result in mortality. previous efforts to identify papillomavirus dna and proteins in these lesions have been largely unsuccessful. in contrast, increasing evidence suggests that mucosal papillomas may contain psittacid herpesviruses (pshvs). in this study, 41 papillomas from 30 neotropical parrots were examined by pcr with pshv-specific primers. ... | 2004 | 15231383 |
| a novel papillomavirus in adélie penguin (pygoscelis adeliae) faeces sampled at the cape crozier colony, antarctica. | papillomaviruses are epitheliotropic viruses that have circular dsdna genomes encapsidated in non-enveloped virions. they have been found to infect a variety of mammals, reptiles and birds, but so far they have not been found in amphibians. using a next-generation sequencing de novo assembly contig-informed recovery, we cloned and sanger sequenced the complete genome of a novel papillomavirus from the faecal matter of adélie penguins (pygoscelis adeliae) nesting on ross island, antarctica. the g ... | 2014 | 24686913 |
| lack of canonical e6 and e7 open reading frames in bird papillomaviruses: fringilla coelebs papillomavirus and psittacus erithacus timneh papillomavirus. | determination and analyses of the complete sequence of fringilla coelebs papillomavirus and psittacus erithacus timneh papillomavirus indicate that they represent a distinct and distant lineage of papillomaviruses. the lack of canonical e6-e7 open reading frames suggests that they serve adaptive functions during papillomavirus evolution. | 2002 | 12208979 |
| avian papillomaviruses: the parrot psittacus erithacus papillomavirus (pepv) genome has a unique organization of the early protein region and is phylogenetically related to the chaffinch papillomavirus. | an avian papillomavirus genome has been cloned from a cutaneous exophytic papilloma from an african grey parrot (psittacus erithacus). the nucleotide sequence, genome organization, and phylogenetic position of the psittacus erithacus papillomavirus (pepv) were determined. this pepv sequence represents the first complete avian papillomavirus genome defined. | 2002 | 12110158 |
| avian papilloma and squamous cell carcinoma: a histopathological, immunohistochemical and virological study. | in this retrospective study, we describe the histopathological findings in seven papillomas and 45 squamous cell carcinomas (sccs) from psittacine birds, raptors and domestic fowl. the age of affected birds ranged from 3 to 40 years, with median age significantly higher in psittacines (p = 0.014). the majority of tumours were located in the skin (24/52, 46.2%) or uropygial gland (10/52, 19.2%). thirty of the sccs (66.7%) were well differentiated and 15 (33.3%) were poorly-differentiated. sccs ex ... | 2020 | 32138838 |