Document 3033 DOCN M94A3033 TI Ultrastructure of nuclear bodies in Kaposi's sarcoma associated AIDS. DT 9412 AU Oyafuso LK; Hayashi H; Hotta Y; Inst. Infect. Emilio Ribas, S. Paulo, Brazil. SO Int Conf AIDS. 1994 Aug 7-12;10(1):169 (abstract no. PB0103). Unique Identifier : AIDSLINE ICA10/94369542 AB OBJECTIVES: To evaluate the morphological and ultra-structure alteration of the cells composing the SK lesion. Nuclear bodies could be seen in spindle-cell and undifferentiated endothelial cell as intranuclear structures. METHODS: Biopsies from AIDS associated Kaposi's sarcoma were obtained from 11 patients not previously treated for KS, and not having opportunistic infection at the time of biopsy. The skin fragments of Kaposi's sarcoma were processed as usually for light and electron microscopy. RESULTS: Light microscopy showed typical hysthopathology for KS. Electron-microscopy studies has shown the presence of nuclear bodies in spindle-like cells and undifferentiated endothelial cells from two patients. Both patients who had showed nuclear bodies were men, homosexual at the age of 25 and 31 years. The lesions were typical skin nodules involving the trunk. These intracellular structures were seen as spherical particles measuring 0.8 to 1.2 micrometer in diameter. At higher magnification they looked like a spiral array of double membrane. CONCLUSIONS: Nuclear bodies are old organelles described 30 years ago. Its role however is yet to discovered, but it has been associated with the degree of cellular activity after some kind of stimulus. DE Acquired Immunodeficiency Syndrome/*PATHOLOGY Adult Biopsy Cell Nucleus/*ULTRASTRUCTURE Endothelium, Vascular/PATHOLOGY Homosexuality Human Inclusion Bodies/*ULTRASTRUCTURE Male Microscopy, Electron Sarcoma, Kaposi's/*ULTRASTRUCTURE Skin/PATHOLOGY Skin Neoplasms/*ULTRASTRUCTURE MEETING ABSTRACT SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).