ArticleThe Indian journal of medical research2025
Investigation of human herpesvirus 8 & Leishmania species in malignant skin tumours, psoriasis, actinic keratoses, & seborrheic keratoses: A single-center experience from Ankara, Turkey.
Article in The Indian journal of medical research, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Background & objectives The role of human herpesvirus-8 (HHV-8) and Leishmania species in the aetiology of malignant skin tumours and proliferative skin diseases remains a topic of debate. This study aims to analyse formalin-fixed, paraffin-embedded (FFPE) skin biopsy samples using polymerase chain reaction (PCR) to determine whether skin lesions caused by HHV-8 and Leishmania spp. resemble malignant and proliferative skin diseases and assess the role of these pathogens in disease aetiology. Methods In this retrospective, single-center observational study, skin biopsies were collected from 275 individuals diagnosed with malignant skin tumours, psoriasis, actinic keratoses, seborrheic keratoses, and chronic dermatitis. The presence of HHV-8 and Leishmania spp. in biopsy samples was evaluated using PCR. Results HHV-8 DNA was not detected in any of the samples using PCR. However, Leishmania spp. DNA was identified in 8.4 per cent of all samples (n=23). No positivity was observed in the control group (P=0.387). Leishmania spp. DNA PCR positivity was most frequently detected in psoriasis cases (32.4%), followed by actinic keratosis (AK) (8.7%), malignant skin tumours (4.2%), and seborrheic keratosis (SK) (3.8%). When the Leishmania positivity rate in individuals diagnosed with psoriasis was compared with that of the control group, the difference was found to be significant (P=0.002). The positivity rate in squamous cell carcinoma (SCC) (7.3%) was higher than in basal cell carcinoma (1.6%). Interpretation & conclusions The findings in this study suggests that there is no relationship between malignant and proliferative skin diseases and HHV-8. However, Leishmania spp. DNA was detected in 8.4 per cent of all samples. Biopsy-archived samples may be preferred for the differential diagnosis of Leishmania in diseases that do not respond to treatment and in atypical clinical presentations.
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