Alternative cell line for virus isolation. – PubMed

Alternative cell line for virus isolation. - PubMed

Alternative cell line for virus isolation. - PubMed
DNA polymorphisms among independent isolates of herpes simplex virus (HSV) type 1 were studied from a 7-year-old male patient with recurrent infections of the skin and internal organs. We found 179 respiratory virus isolates by either method in 675 specimens. All of the viruses induced a cytopathic effect in 293 cells. Between 2007 and 2009, all patients with suspected viral pneumonia were tested for the presence of herpes viruses using a PCR assay approach with respiratory specimens. Of the 81 specimens, 53 (65%) yielded a virus: RSV, 28%; Flu A, 25%; rhinovirus, 6%; and enterovirus, cytomegalovirus, herpes simplex virus, and adenovirus, 2 to 4% each. Demographics and clinical presentations were similar in patients with dual infections or RSV alone. Of 15 cats with respiratory tract disease and conjunctivitis, conjunctival specimens from 13 and throat specimens from 12 were FHV positive by PCR.

Whether other viruses, such as mimivirus, are responsible for nosocomial pneumonia in mechanically ventilated patients requires additional studies. The A549 cell line proved to be an efficient, practical, and economical alternative cell system for the isolation of adenovirus and HSV in particular. One hundred forty-two kinds of traditional medicines, which have been historically used in China, Indonesia, and Japan, were examined for the antiviral activity of their hot water (HW) extracts against herpes simplex virus type 1 (HSV-1), poliovirus type 1, and measles virus by plaque reduction assay.

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