title: Subtyping of BK Virus in Iranian Turkish Renal Transplant Recipients by RFLP-PCR.
abstract: BACKGROUND
  BK polyomavirus (BKV) as a member of polyomavirus family is prevalent in the human population. BKV persists in renal tissue after asymptomatic infection in childhood. The reactivation of BKV in renal transplant recipients sometimes can lead to BKV associated nephropathy. BKV isolates are classified into four serologically distinct subtypes. Present study was carried out to investigate the distribution pattern of BKV subtypes in Iranian Turkish renal transplant recipients.
  
  
  METHODS
  Urine samples from 12 kidney transplant recipients infected with BKV were analyzed by RFLP-PCR technique for classification of subtypes.
  
  
  RESULTS
  Our analysis showed that all samples were infected with BKV type I. BK virus types II, III, and IV were not detected in our patients.
  
  
  CONCLUSIONS
  Based on the results of the present study, BKV subtype I was the most frequently detected subtype in renal transplant recipients. To our knowledge, the present study provides the first data regarding distribution of BKV subtypes in Iranian renal transplant recipients.
authors.affiliation: Nephrology and Transplant Research Center, Clinical virology Laboratory, Urmia University of Medical Sciences, Urmia, Iran  ; Division of Clinical Virology, Cellular and Molecular Research Center, Urmia University of Medical Sciences, Urmia, Iran.
authors.forename: Morteza
authors.initials: M
authors.lastname: Motazakker
authors.forename: Morteza
authors.initials: M
authors.lastname: Bagheri
authors.forename: Maryam
authors.initials: M
authors.lastname: Imani
keywords: BKV; recipients; renal transplant; urine