Abstract
Despite the frequency of infections with herpesviridae family, only eight subtypes affect humans (Herpex Simplex Virus types 1 and 2, Varicella Zoster Virus, Epstein-Barr Virus, Citomegalovirus and Human Herpes Virus types 6, 7 and 8). Amongst enteroviruses infections, the most important are Poliovirus, Coxackievirus and Echovirus. Symptoms can vary from mild to severe and early diagnosis is of upmost importance.Nowadays, low-density arrays can detect different types of viruses in a single assay using DNA extracted from biological samples. We analyzed 70 samples of formalin-fixed and paraffin-embedded tissue, searching for viruses (HSV-1, HSV-2, VZV, CMV, EBV, HHV-6, HHV-7 y HHV-8, Poliovirus, Echovirus and Coxsackievirus) using the kit CLART® ENTHERPEX. Out of the total of 70 samples, 29 were positive for viral infection (41.43%), and only 4 of them showed cytopathic effect (100% correlation between histology and the test). 47.6% of GVHD samples were positive for virus; 68.75% of IBD analyzed showed positivity for viral infection; in colitis with ulcers (neither GVHD nor IBD), the test was positive in 50% of the samples and was also positive in 50% of ischemic lesions. The high sensitivity of the technique makes it a useful tool for the pathologist in addition to conventional histology-based diagnosis, as a viral infection may affect treatment.
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