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Search for evidence of recurring or persistent viruses in Crohn's disease

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Van Kruiningen HJ, Poulin M, Garmendia AE, Desreumaux P, Colombel JF, De Hertogh G, Geboes K, Vermeire S, Tsongalis GJ. Search for evidence of recurring or persistent viruses in Crohn's disease. APMIS 2007;115:962–8.

New-onset Crohn's disease and acute flares are often associated with viral infections. The aim of this study was to search for evidence of persistent or recurrent viruses in patients. Tissue blocks were obtained from surgical specimens from patients and a control population. 111 samples were tested by PCR or RT-PCR, for EBV, CMV, HSV 1, HSV 2, HHV 8, pestiviruses, and enteroviruses. Additionally, seven sets of serum samples, including pre-operative and post-operative samples, from CD patients were analyzed serologically for antibodies to EBV. The tests revealed evidence of EBV nucleic acid in tissues of 11 patients from a total of 70 tested (15.7%) and in tissues of 3 of 41 control subjects (7.3%). Evidence of pestivirus was found in one CD patient, while one patient and one control were positive for CMV. No HSV 1 or 2, HHV 8 or enteroviruses were found. The serologic tests revealed that five of seven CD patients had antibodies against the early protein, the capsid protein and the EBV nuclear antigen (EBNA). The titers were not significantly altered post-surgically. None of the patients had antibodies of the IgM isotype. Our findings vary from those of Ruther et al. who demonstrated evidence of EBV in tissues from 7 of 11 (64%) German CD patients. Antibodies to early EBV viral antigen and to nuclear antigen in five of seven Belgian patients suggest persistent active viral infection.
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Keywords: Crohn's disease; Epstein-Barr virus; inflammatory bowel disease; viruses

Document Type: Research Article

Affiliations: 1: Hartford Hospital, Hartford, Connecticut, USA, 2: Department of Pathobiology and Veterinary Science, University of Connecticut, Storrs, 3: Centre Hospitalier Régional, Universitaire de Lille, Lille, France and Departments of 4: Pathology, 5: Gastroenterology, University Hospital Gasthuisberg, Leuven, Belgium

Publication date: 2007-08-01

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