https://observatorio.fm.usp.br/handle/OPI/18153
Title: | Genotypic distribution of HHV-8 in AIDS individuals without and with Kaposi sarcoma Is genotype B associated with better prognosis of AIDS-KS? |
Authors: | TOZETTO-MENDOZA, Tania Regina; IBRAHIM, Karim Yaqub; TATENO, Adriana Fumie; OLIVEIRA, Cristiane Mendes de; SUMITA, Laura Massami; SANCHEZ, Maria Carmem Arroyo; LUNA, Expedito Jose; PIERROTTI, Ligia Camara; DREXLER, Jan Felix; BRAZ-SILVA, Paulo Henrique; PANNUTI, Claudio Sergio; ROMANO, Camila Malta |
Citation: | MEDICINE, v.95, n.48, article ID e5291, 8p, 2016 |
Abstract: | AIDS-associated Kaposi's sarcoma (AIDS-KS) caused by human herpes virus 8 (HHV-8) is the most severe and resistant form of KS tumor. Our aim was to verify whether there is an association between HHV-8 variability and development of AIDS-KS in Brazil by comparing the HHV-8 variability between individuals without and with KS. Saliva samples and blood, when available, were analyzed by PCR techniques for detection of the fragments of ORF K1 of HHV-8, which were then genotyped and analyzed regarding the genetic variability. Our study described 106 positive cases for HHV-8 in the saliva from 751 AIDS patients without previous KS. In addition, we performed a phylogenetic analysis of HHV-8 in 34 of the 106 AIDS patients without KS and in 33 of the 37 patients with active KS. The distribution of HHV-8 genotypes A, B, C, and F in AIDS individuals was indistinguishable by comparing non-KS and KS groups, as well as regarding ethnicity. Considering the KS group, genotype B was associated with better prognosis of KS tumor. Interestingly. we found a particular profile of diversity within Glade C and 2 recombinant patterns of HHV-8 in the saliva of AIDS individuals without KS. We emphasize the need to achieve standard genotyping protocol for ORF K1 amplification, thus allowing for substantial detection of HHV-8 variants. Our findings can shed light on the role of HHV-8 variability in the pathogenesis of AIDS-KS. |
Appears in Collections: | Artigos e Materiais de Revistas Científicas - FM/MIP Artigos e Materiais de Revistas Científicas - HC/ICESP Artigos e Materiais de Revistas Científicas - HC/ICHC Artigos e Materiais de Revistas Científicas - IMT Artigos e Materiais de Revistas Científicas - LIM/38 Artigos e Materiais de Revistas Científicas - LIM/47 Artigos e Materiais de Revistas Científicas - LIM/52 Artigos e Materiais de Revistas Científicas - ODS/03 |
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art_TOZETTO-MENDOZA_Genotypic_distribution_of_HHV8_in_AIDS_individuals_without_2016.PDF | publishedVersion (English) | 512.27 kB | Adobe PDF | View/Open |
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