Multilocus genotyping of Giardia duodenalis in lambs from Spain reveals a high heterogeneity.
Res Vet Sci
; 93(2): 836-42, 2012 Oct.
Article
em En
| MEDLINE
| ID: mdl-22261115
ABSTRACT
Fecal specimens from 120 lambs in Valencia (Spain) were analyzed for Giardia duodenalis by IFA and nested-PCR using the beta giardin (bg), glutamate dehydrogenase (gdh), triose phosphate isomerase (tpi) and small subunit ribosomal RNA (ssurRNA) genes. The highest prevalence was obtained using the ssurRNA gene (89.2%), whereas values from other techniques ranged from 64.1% to 69.2%. Sequences of the ssurRNA showed a high proportion of assemblage A or mixed assemblage A/E samples (55.1% and 25.2%, respectively). When the other 3 loci were analyzed, between 6.5% and 15.4% were found to be assemblage A or A/E, respectively. Nested PCR for the tpi gene was the most variable of the targets employed. Twelve new sequences of gdh and tpi for G. duodenalis from sheep were found. Multilocus genotyping resulted in 63 patterns from the 71 samples sequenced at the four loci. This high variability among isolates possibly reflects the high frequency of mixed infections.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Doenças dos Ovinos
/
Variação Genética
/
Giardia lamblia
/
Genótipo
Tipo de estudo:
Risk_factors_studies
Limite:
Animals
País/Região como assunto:
Europa
Idioma:
En
Revista:
Res Vet Sci
Ano de publicação:
2012
Tipo de documento:
Article
País de afiliação:
Espanha