title: Detection of a novel porcine boca-like virus in the background of porcine circovirus type 2 induced postweaning multisystemic wasting syndrome.
abstract: Porcine circovirus type 2 (PCV-2) has been found to be the causative agent of postweaning multisystemic wasting syndrome (PMWS). However, PCV-2 is a ubiquitous virus in the swine population and a majority of pigs infected with PCV-2 do not develop the disease. Different factors such as age, maintenance, the genetics of PCV-2, other pathogens, etc. have been suggested to contribute to the development of PMWS. However, so far no proven connection between any of these factors and the disease development has been found. In this study we explored the possible presence of other so far unknown DNA containing infectious agents in lymph nodes collected from Swedish pigs with confirmed PMWS through random amplification and high-throughput sequencing. Although the vast majority of the amplified genetic sequences belonged to PCV-2, we also found genome sequences of Torque Teno virus (TTV) and of a novel parvovirus. The detection of TTV was expected since like PCV-2, TTV has been found to have high prevalence in pigs around the world. We were able to amplify a longer region of the parvovirus genome, consisting of the entire NP1 and partial VP1/2. By comparative analysis of the nucleotide sequences and phylogenetic studies we propose that this is a novel porcine parvovirus, with genetic relationship to bocaviruses.
authors.affiliation: Department of Biomedical Sciences and Veterinary Public Health, Division of Microbiology and Food Safety, Swedish University of Agricultural Sciences, S-750 07 Uppsala, Sweden. Anne-Lie.Blomstrom@bvf.slu.se
authors.forename: Anne-Lie
authors.initials: AL
authors.lastname: Blomström
authors.forename: Sandor
authors.initials: S
authors.lastname: Belák
authors.forename: Caroline
authors.initials: C
authors.lastname: Fossum
authors.forename: John
authors.initials: J
authors.lastname: McKillen
authors.forename: Gordon
authors.initials: G
authors.lastname: Allan
authors.forename: Per
authors.initials: P
authors.lastname: Wallgren
authors.forename: Mikael
authors.initials: M
authors.lastname: Berg
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D052660:Bocavirus / Q000235:genetics / Q000302:isolation & purification*; D017925:Circovirus / Q000235:genetics / Q000302:isolation & purification*; D016000:Cluster Analysis; D008198:Lymph Nodes / Q000821:virology; D008969:Molecular Sequence Data; D028323:Parvovirus, Porcine / Q000235:genetics / Q000302:isolation & purification; D010802:Phylogeny; D053570:Porcine Postweaning Multisystemic Wasting Syndrome / Q000821:virology*; D016415:Sequence Alignment; D017422:Sequence Analysis, DNA; D017385:Sequence Homology; D013548:Sweden; D013552:Swine; D022783:Torque teno virus / Q000235:genetics / Q000302:isolation & purification; D014764:Viral Proteins / Q000235:genetics
chemical_list: D014764:Viral Proteins