Distribution of dendritic cells in AIDS-associated oral Kaposi’s sarcoma

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dc.contributor.author De Caceres, Cinthia Veronica Bardalez Lopez
dc.contributor.author Vargas, Pablo Agustin
dc.contributor.author Sanchez-Romero, Celeste
dc.contributor.author Bunn, Belinda Kathleen
dc.contributor.author Van Heerden, Willem Francois Petrus
dc.contributor.author Fonseca, Felipe Paiva
dc.date.accessioned 2020-07-17T15:03:56Z
dc.date.available 2020-07-17T15:03:56Z
dc.date.issued 2019
dc.description.abstract The aim of this study was to determine if the distribution of Langerhans cells (LC) and interstitial dendritic cells (IDC) is altered in AIDS-associated oral Kaposi’s sarcoma when compared to HIV-negative highly vascular oral lesions. Fifty-one cases of AIDS-associated oral Kaposi’s sarcoma and 20 of highly vascular oral lesions were retrospectively retrieved. All cases of Kaposi’s sarcoma were confirmed with immunoreactions against CD34 and HHV-8. Clinical data regarding sex, age and lesions location were obtained from pathology reports. Immunohistochemistry against CD207 (immature dendritic cells) and CD83 (mature dendritic cells) were done. LC were in the epithelium and IDC in the stroma. CD207+ cells predominated in the epithelium of the lesions, whereas CD83+ cells predominated in their stromal compartment. Kaposi’s sarcoma had a lower CD207+ immature LC count (p=0.02) and an increased CD207+ IDC than highly vascular oral lesions (p<0.001). Moreover, Kaposi’s sarcoma also showed an increased number of mature CD83+ IDC than highly vascular oral lesions (p<0.001). There were significant alterations in the distribution of LC and IDC in AIDS-associated Kaposi’s sarcoma when compared to HIV-negative vascular oral lesions, suggesting that changes in their concentrations may play a role in the pathogenesis of Kaposi’s sarcoma. en_ZA
dc.description.abstract O objetivo deste estudo foi determinar se a distribuição das células de Langerhans (CL) e das células dendríticas intersticiais (CDI) está alterada no sarcoma de Kaposi oral associado à AIDS quando comparado às lesões orais altamente vasculares HIV-negativas. 51 casos de sarcoma de Kaposi oral associado à AIDS e 20 de lesões orais altamente vasculares foram recuperados retrospectivamente. Todos os casos de sarcoma de Kaposi foram confirmados pela positividade para os anticorpos CD34 e HHV-8. Dados clínicos sobre sexo, idade e localização das lesões foram obtidos dos laudos histopatológicos. Foram realizadas imunoistoquímica contra CD207 (células dendríticas imaturas) e CD83 (células dendríticas maduras). As CL estavam presentes no epitélio enquanto as CDI estavam presentes no estroma. As células CD207+ predominaram no epitélio das lesões, enquanto as células CD83+ predominaram no estroma. O sarcoma de Kaposi teve uma contagem mais baixa de CD imaturas CD207+ (p = 0,02) e número aumentado de CDC CD207+ do que lesões orais altamente vasculares (p<0,001). Além disso, o sarcoma de Kaposi também mostrou um número aumentado de CDI CD83+ maduras do que lesões orais altamente vasculares (p<0,001). Houve alterações significativas na distribuição de CL e CDI no sarcoma de Kaposi associado à AIDS quando comparado às lesões orais vasculares HIV-negativas, sugerindo que alterações na distribuição das mesmas podem desempenhar um papel na patogênese do sarcoma de Kaposi. en_ZA
dc.description.department Oral Pathology and Oral Biology en_ZA
dc.description.librarian am2020 en_ZA
dc.identifier.citation De Caceres, C.V.B.L., Vargas, P.A., Sanchez-Romero, C. et al. 2019, 'Distribution of dendritic cells in AIDS-associated oral Kaposi’s sarcoma', Brazilian Dental Journal, vol. 30, no. 6, pp. 617-625. en_ZA
dc.identifier.issn 0103-6440 (print)
dc.identifier.issn 1806-4760 (online)
dc.identifier.other 10.1590/0103-6440201902599
dc.identifier.uri http://hdl.handle.net/2263/75352
dc.language.iso en en_ZA
dc.publisher Fundação Odontológica de Ribeirão Preto en_ZA
dc.rights Fundação Odontológica de Ribeirão Preto. Article is licensed under a Creative Commons Attribution License. en_ZA
dc.subject Kaposi’s sarcoma en_ZA
dc.subject Dendritic cells en_ZA
dc.subject CD207 en_ZA
dc.subject CD83 en_ZA
dc.subject Acquired immune deficiency syndrome (AIDS) en_ZA
dc.subject Langerhans cells (LC) en_ZA
dc.subject Interstitial dendritic cells (IDC) en_ZA
dc.subject Oral lesions en_ZA
dc.title Distribution of dendritic cells in AIDS-associated oral Kaposi’s sarcoma en_ZA
dc.type Article en_ZA


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