Biomaterial Database

Seborrheic keratoses of black patients with epidermodysplasia verruciformis contain human papillomavirus DNA. 1993

W K Jacyk, and L Dreyer, and E M de Villiers

Department of Dermatology, University of Pretoria, Republic of South Africa.

Epidermodysplasia verruciformis (EV) is a rare disease characterized by a generalized cutaneous infection with human papillomaviruses (HPVs) and a propensity for transformation of the lesions to squamous cell carcinomas on sun-exposed areas of the skin. Black-skinned patients with EV have a much lower incidence of skin cancer. Nine of 32 black African patients with EV presented deeply pigmented, flat or slightly raised lesions, located mostly in sun-exposed areas, that clinically had been diagnosed as seborrheic keratoses. Seborrheic keratoses are otherwise very rare in black Africans. Histology of these lesions disclosed seborrheic keratoses, lesions with seborrheic keratosis, and EV changes in the same biopsy specimens and seborrheic keratoses with features of bowenoid dysplasia. Reverse blot hybridization indicated the presence of DNA related to the HPV-5 group of papillomaviruses in seborrheic keratoses in three patients. Subsequent Southern blot analysis revealed a DNA that was related but not identical to any of the papillomaviruses in this HPV-5 group. The fourth lesion studied a few years earlier contained HPV-5c. The question arises whether a different type of HPV is responsible for development of these tumors in black patients with EV.

UI	MeSH Term	Description	Entries
D008297	Male		Males
D008875	Middle Aged	An adult aged 45 - 64 years.	Middle Age
D009693	Nucleic Acid Hybridization	Widely used technique which exploits the ability of complementary sequences in single-stranded DNAs or RNAs to pair with each other to form a double helix. Hybridization can take place between two complimentary DNA sequences, between a single-stranded DNA and a complementary RNA, or between two RNA sequences. The technique is used to detect and isolate specific sequences, measure homology, or define other characteristics of one or both strands. (Kendrew, Encyclopedia of Molecular Biology, 1994, p503)	Genomic Hybridization,Acid Hybridization, Nucleic,Acid Hybridizations, Nucleic,Genomic Hybridizations,Hybridization, Genomic,Hybridization, Nucleic Acid,Hybridizations, Genomic,Hybridizations, Nucleic Acid,Nucleic Acid Hybridizations
D004279	DNA, Viral	Deoxyribonucleic acid that makes up the genetic material of viruses.	Viral DNA
D004819	Epidermodysplasia Verruciformis	An autosomal recessive trait with impaired cell-mediated immunity. About 15 human papillomaviruses are implicated in associated infection, four of which lead to skin neoplasms. The disease begins in childhood with red papules and later spreads over the body as gray or yellow scales.	Lewandowsky-Lutz Disease,Lutz-Lewandowsky Disease,Disease, Lewandowsky-Lutz,Disease, Lutz-Lewandowsky,Lewandowsky Lutz Disease,Lutz Lewandowsky Disease
D005260	Female		Females
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000328	Adult	A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available.	Adults
D015344	DNA Probes, HPV	DNA probes specific for the identification of human papilloma virus.	HPV DNA Probes,Human Papilloma Virus DNA Probes,Papilloma Virus DNA Probes,Probes, HPV DNA
D017492	Keratosis, Seborrheic	Benign eccrine poromas that present as multiple oval, brown-to-black plaques, located mostly on the chest and back. The age of onset is usually in the fourth or fifth decade.	Seborrheic Keratosis,Keratosis Seborrheica,Keratoses, Seborrheic,Seborrheic Keratoses