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Front Microbiol. 2016 May 10;7:672. doi: 10.3389/fmicb.2016.00672. eCollection 2016.

Increased Prevalence of Human Polyomavirus JC Viruria in Chronic Inflammatory Rheumatic Diseases Patients in Treatment with Anti-TNF α: A 18 Month Follow-Up Study.

Frontiers in microbiology

Donatella Maria Rodio, Elena Anzivino, Monica Mischitelli, Anna Bellizzi, Rossana Scrivo, Daniela Scribano, Gianlorenzo Conte, Carla Prezioso, Maria Trancassini, Guido Valesini, Anna Teresa Palamara, Valeria Pietropaolo

Affiliations

  1. Department of Public Health and Infectious Diseases, "Sapienza" University of Rome Rome, Italy.
  2. Department of Public Health and Infectious Diseases, Institute Pasteur, Cenci-Bolognetti Foundation, "Sapienza" University of Rome Rome, Italy.
  3. Department of Internal Medicine and Medical Disciplines, Rheumatology, "Sapienza" University of Rome Rome, Italy.
  4. Department of Experimental and Clinical Sciences, "G. D'Annunzio" University of Chieti Chieti, Italy.
  5. Department of Public Health and Infectious Diseases, Institute Pasteur, Cenci-Bolognetti Foundation, "Sapienza" University of RomeRome, Italy; San Raffaele Pisana Scientific Institute for Research, Hospitalization and Health CareRome, Italy.
  6. Department of Public Health and Infectious Diseases, "Sapienza" University of RomeRome, Italy; Sbarro Institute for Cancer Research and Molecular Medicine, Center for Biotechnology, College of Science and Technology, Temple UniversityPhiladelphia, PA, USA.

PMID: 27242700 PMCID: PMC4861734 DOI: 10.3389/fmicb.2016.00672

Abstract

Chronic inflammatory rheumatic diseases (CIRDs) are immune-mediated pathologies involving joints. To date, TNFα-blocking agents administration is the most promising therapy, although these treatments are associated with an increased Polyomavirus JC (JCPyV) reactivation, the etiological agent of the Progressive Multifocal Leukoencephalopathy (PML). The aim of this study was the recruitment and the analysis of a CIRDs cohort in order to investigate a possible correlation between JCPyV presence and the influence of anti-TNF-α agents on viral loads. Blood and urine samples were collected from 34 CIRDs subjects prior the first anti-TNF-α infusion (T0) and after 3 (T3), 6 (T6), 12 (T12), and 18 (T18) months. Results showed persistent JC viruria significantly higher than JC viremia throughout the 18 month follow-up study (p = 0.002). In JCPyV positive samples, the non-coding control region (NCCR) was analyzed. Results evidenced archetypal structures (type II-S) in all isolates with the exception of a sequence isolated from a plasma sample, that corresponds to the type II-R found in PML subjects. Finally, the viral protein 1 (VP1) genotyping was performed and results showed the prevalence of the European genotypes 1A, 1B, and 4. Since only few studies have been carried out to understand whether there is a PML risk in CIRDs population infected by JCPyV, this study contributes to enrich literature insight on JCPyV biology in this cluster. Further investigations are necessary in order to recognize the real impact of biologics on JCPyV life cycle and to identify possible and specific viral variants related to increased virulence in CIRDs patients.

Keywords: NCCR; VP1; anti-TNF-α; chronic inflammatory rheumatic diseases; human polyomavirus JC

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