【摘 要】
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Human herpesvirus 8 (HH'V-8) is thought to be essential for the development of all forms of Kaposi's sarcoma (KS). HHV-8 DNA is present virtually in all KS tumo
【机 构】
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Department of Dermatology
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Human herpesvirus 8 (HH'V-8) is thought to be essential for the development of all forms of Kaposi's sarcoma (KS). HHV-8 DNA is present virtually in all KS tumor biopsy samples. Genes at both ends of the HHV-8 genome have been shown to vary considerably. Seve nmajor molecular subtypes of HHV-8 were defined based on the amino acid sequence of the open reading frame K1 (ORF-Kl), generally known as A, B, C, D, E, E and Z. Most strains collected worldwide were clustered into two subtypes (A and C). Here, the Kl/VRl region of HHV-8 was amplified by nested PCR in 22 (81.48%) of 27 cases from Xinjiang Uygur Autonomous Region, a province in northwest-ern China. Phylogenetic analysis on the basis of the KI/VRI amino acid sequence indicated that the majority of these KS patients were infected by subtype C HHV-8 (n = 18, including 15 belonging to the C2 group), and several by subtype A (n = 4, including 3 being the Al group). This is the fast report of subtype A HHV-g in China. Furthermore, the correlations between different forms and lesions of KS and different subtypes of HHV-8 were analyzed. The findings showed that subtype A HHV-8 resulted in significantly more frequent mucosal KS lesions than subtype C. However, there was no obvious correlation between different forms of KS and different subtypes of HHV-8.
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