Transcriptional changes associated with recurrent airway obstruction in affected and unaffected horses.
Am J Vet Res
; 71(4): 476-82, 2010 Apr.
Article
em En
| MEDLINE
| ID: mdl-20367057
ABSTRACT
OBJECTIVE:
To identify differentially expressed genes in pulmonary tissues of horses affected with summer pasture-associated obstructive pulmonary disease (SPAOPD), which is a form of recurrent airway obstruction (RAO), compared with those of unaffected horses. ANIMALS 6 horses with SPAOPD-RAO and 6 unaffected (healthy) horses. PROCEDURES Horses were assigned to 2 groups on the basis of medical history, clinical score, and transpleural pressure. Total RNA from each of the 5 lung lobes of each of the 6 SPAOPD-RAO-affected horses was extracted and pooled. Similarly, total RNA from unaffected horses was pooled. Differential display (DD) PCR assay was performed, and differentially expressed bands were purified and cloned into a plasmid vector. Plasmids were extracted from recombinant colonies, and purified DNA was sequenced. Genes of interest for RAO pathogenesis were identified. Real-time PCR assay was performed to confirm findings for the DD PCR assay.RESULTS:
18 differentially expressed genes (17 upregulated and 1 downregulated) were identified. Three genes of particular interest were found to be altered (2 upregulated and 1 downregulated) in horses with SPAOPD-RAO by use of real-time PCR assay, and these findings matched the differential expression found by use of the DD PCR assay. CONCLUSIONS AND CLINICAL RELEVANCE SPAOPD-RAO in horses is a multifactorial, complex disease involving several genes. Upregulated genes, particularly beta2-microglobulin, and the downregulated secretoglobin gene can serve as marker genes that may help to identify SPAOPD-RAO at an early age.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Transcrição Gênica
/
Perfilação da Expressão Gênica
/
Doenças dos Cavalos
/
Pneumopatias Obstrutivas
Tipo de estudo:
Prognostic_studies
/
Risk_factors_studies
Limite:
Animals
Idioma:
En
Revista:
Am J Vet Res
Ano de publicação:
2010
Tipo de documento:
Article
País de afiliação:
Estados Unidos