ABSTRACT
Erythrovirus B19 infects erythrocytic progenitors, transiently interrupting erythropoiesis. In AIDS patients it causes chronic anemia amenable to treatment. We looked for evidences of B19 infection in stored bone marrow material from patients with acquired immunodeficiency syndrome. Histological sections were made from stored paraffin blocks from 33 autopsies (39 blocks) and 35 biopsies (45 blocks, 30 patients) performed from 1988 to 2002. They were examined after hematoxylin-eosin (HE) staining, immunohistochemical (IHC), and in situ hybridization. HE revealed intra-nuclear inclusion bodies ("lantern cells") suggesting B19 infection in 19 sections corresponding to 19 of 63 patients examined with this test. Seven of 78 sections subjected to immunohistochemistry were positive, corresponding to 7 of 58 patients examined with this test. Fourteen sections corresponding to 13 of the 20 HE and/or IHC positive patients were subjected to in situ hybridization, with six positives results. Among the 13 patients subjected to the three techniques, only one gave unequivocal positive results in all and was considered a true positive. The frequency of B19 infection (1/63 patients) in the material examined can be deemed low.
Subject(s)
Female , Humans , Male , AIDS-Related Opportunistic Infections/diagnosis , Bone Marrow/virology , Parvoviridae Infections/diagnosis , /isolation & purification , AIDS-Related Opportunistic Infections/pathology , AIDS-Related Opportunistic Infections/virology , Biopsy , Bone Marrow Examination/methods , Bone Marrow/pathology , Eosine Yellowish-(YS) , Hematoxylin , Immunohistochemistry , In Situ Hybridization , Paraffin Embedding , Parvoviridae Infections/pathology , Parvoviridae Infections/virologyABSTRACT
A descoberta acidental do parvovírus humano B19 em 1974 levou ao esclarecimento da etiologia de algumas síndromes clínicas já desde há muito desconhecidas, e hoje comprovadamente associadas à infecçäo por este vírus. Com base na revisäo da literatura, säo descritas estas síndromes, bem como os eventos que permitiram associá-las ao parvovírus B19, na ordem aproximada em que ocorreram. A literatura brasileira foi também revista. O texto aborda também a infecçäo por pavovírus B19 no contexto de Aids e de outras formas de imunodepressäo