OBJECTIVE: The SEN virus (SENV) represents a recently described group of DNA viruses, two members of which (SENV-D and SENV-H) are linked with posttransfusion hepatitis. Since patients on hemodialysis have a high risk of being infected by blood-borne viruses, we investigated the prevalence of seven SENV isolates in two distinct units of our hospital. METHODS: The presence of SENV was investigated in 171 hemodialysis patients and in 163 controls by using a polymerase chain reaction based methodology, with which the specificity of amplified products was detected by hybridization with probes specific for each variant. Polymerase chain reaction products from 4 patients were sequenced. RESULTS: The overall detection of SENV DNA as well as of SENV-D, SENV-E, and SENV-G was significantly higher in one of the two units, and there was a higher degree of homology in the sequences prepared from patients of the same unit. Furthermore, we demonstrated that mixed infections with multiple SENV were common. No relationship was observed between presence of SENV and sex, age, duration of hemodialysis, previous transfusions or transplantation, hepatitis infection, and routine liver test results. CONCLUSION: Our results indicate that patients who undergo hemodialysis can be at high risk of SENV transmission and suggest an intraunit transmission of specific SENV variants. Copyright (c) 2005 S. Karger AG, Basel.
OBJECTIVE: The SEN virus (SENV) represents a recently described group of DNA viruses, two members of which (SENV-D and SENV-H) are linked with posttransfusion hepatitis. Since patients on hemodialysis have a high risk of being infected by blood-borne viruses, we investigated the prevalence of seven SENV isolates in two distinct units of our hospital. METHODS: The presence of SENV was investigated in 171 hemodialysis patients and in 163 controls by using a polymerase chain reaction based methodology, with which the specificity of amplified products was detected by hybridization with probes specific for each variant. Polymerase chain reaction products from 4 patients were sequenced. RESULTS: The overall detection of SENV DNA as well as of SENV-D, SENV-E, and SENV-G was significantly higher in one of the two units, and there was a higher degree of homology in the sequences prepared from patients of the same unit. Furthermore, we demonstrated that mixed infections with multiple SENV were common. No relationship was observed between presence of SENV and sex, age, duration of hemodialysis, previous transfusions or transplantation, hepatitis infection, and routine liver test results. CONCLUSION: Our results indicate that patients who undergo hemodialysis can be at high risk of SENV transmission and suggest an intraunit transmission of specific SENV variants. Copyright (c) 2005 S. Karger AG, Basel.
Authors: I Schréter; P Kristian; P Jarcuska; S Porubcin; L Siegfried; E Birosová; A Rajnic; A Gocalová Journal: Folia Microbiol (Praha) Date: 2006 Impact factor: 2.629