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- W2011042111 abstract "To investigate whether bronchoalveolar lavage (BAL) fluid specimens can be used to diagnose acute and persistent respiratory syncytial virus (RSV) lung infections in guinea pigs, we tested BAL fluid and lung tissue specimens for evidence of viral infection, and compared BAL cytology between infected and uninfected animals. RSV-inoculated guinea pigs were studied during acute bronchiolitis (days 3 and 7 postinoculation), convalescence (Day 14 postinoculation), and persistent infection (Days 28 and 60 postinoculation), and were compared to the sham-infected control animals. BAL and lung tissue specimens were cultured for virus and tested by immunocytochemistry for viral protein. A reverse transcription-polymerase chain reaction (RT-PCR) method was used to test for viral nucleic acid. Total and differential BAL cell counts were compared between RSV-inoculated and control animals on each study day. In BAL specimens, replicating RSV was isolated by culture in one out of four of the animals on Day 3 postinoculation; immunocytochemistry for RSV antigens was positive in all virus-exposed animals from Days 3-14 postinoculation, and viral nucleic acid was detected by RT-PCR in one-fourth of the animals on Day 3 postinoculation. In contrast, replicating virus, viral antigens, and viral nucleic acid were documented in lung tissues obtained from the same RSV-infected animals on all study days. BAL specimens of RSV-inoculated animals contained more eosinophils on all study days (two-tailed P value < 0.01) compared to the controls. The results of this animal study demonstrate that BAL fluid is not useful for diagnosis of persistent RSV infection. However, BAL fluid may be helpful for the documentation of acute RSV lung infection when immunocytochemistry may provide a more accurate test for virus detection than RT-PCR or viral culture." @default.
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- W2011042111 date "1998-12-01" @default.
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- W2011042111 title "Usefulness of bronchoalveolar lavage for diagnosis of acute and persistent respiratory syncytial virus lung infections in guinea pigs" @default.
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- W2011042111 doi "https://doi.org/10.1002/(sici)1099-0496(199812)26:6<396::aid-ppul4>3.0.co;2-3" @default.
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