INVESTIGADORES
MALIRAT Viviana
congresos y reuniones científicas
Título:
Diagnostic and strain identfication of Canine Parvovirus in Argentina by molecular biology tools
Autor/es:
GALLO CALDERON, MARINA; KELLER, L.; IGLESIAS. M.; MALIRAT V; PERIOLO, O; MATTION, N; LA TORRE, J. L.
Lugar:
Puerto Madryn
Reunión:
Congreso; XLVI Reunion Anula de la Sociedad Argentina de Investigación en Bioquimica y Biologia Molecular; 2010
Institución organizadora:
SAIB - Sociedad Argentina de Investigación en Bioquimica y Biologia Molecular
Resumen:
The continuous emergence of new strains of
canine parvovirus (CPV), poorly protected by current vaccination,
is a concern among breeders, veterinarians, and
dog owners around the world. Therefore, the understanding
of the genetic variation in emerging CPV strains is crucial
for the design of disease control strategies, including vaccines.
In this paper, we obtained the sequences of the fulllength
gene encoding for the main capsid protein (VP2) of
11 canine parvovirus type 2 (CPV-2) Argentine representative
field strains, selected from a total of 75 positive
samples studied in our laboratory in the last 9 years. A
comparative sequence analysis was performed on 9 CPV-2c,
one CPV-2a, and one CPV-2b Argentine strains with respect
to international strains reported in the GenBank database. In
agreement with previous reports, a high degree of identity
was found among CPV-2c Argentine strains (99.6100%
and 99.7100% at nucleotide and amino acid levels,
respectively). However, the appearance of a new substitution
in the 440 position (T440A) in four CPV-2c Argentine
strains obtained after the year 2009 gives support to the
variability observed for this position located within the VP2,
three-fold spike. This is the first report on the genetic characterization
of the full-length VP2 gene of emerging CPV
strains in South America and shows that all the Argentine
CPV-2c isolates cluster together with European and North
American CPV-2c strains.