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Am J Vet Res ; 78(11): 1329-1337, 2017 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-29076374

RESUMO

OBJECTIVE To examine whether expression of extracellular matrix metalloproteinase inducer (EMMPRIN) can be detected in equine lungs and whether it correlates with matrix metalloproteinase (MMP)-2 and -9 expression in bronchoalveolar lavage fluid (BALF) of horses with chronic inflammation of the lungs (ie, lower airway inflammation [LAI]). ANIMALS 29 horses with signs of chronic respiratory tract disease, which were classified as the LAI (n = 17) and LAI with respiratory distress (RDLAI [12]) groups, and 15 control horses. PROCEDURES BALF, tracheal aspirate, and blood samples were obtained, and EMMPRIN expression was determined from BALF cells and RBCs by use of western blotting. Activities of MMP-2 and -9 were determined with zymography. RESULTS Expression of EMMPRIN protein was identified in BALF cells of all horses. Expression of EMMPRIN protein was highest for the RDLAI group and was correlated with MMP-2 and -9 protein expression, MMP-9 gelatinolytic activity, and airway neutrophilia. CONCLUSIONS AND CLINICAL RELEVANCE Results suggested that EMMPRIN was involved in the pathophysiologic processes of asthma in horses. However, additional studies of horses and other species are warranted to elucidate the regulation of EMMPRIN expression in asthmatic lungs.


Assuntos
Basigina/biossíntese , Doenças dos Cavalos/enzimologia , Metaloproteinase 2 da Matriz/biossíntese , Metaloproteinase 9 da Matriz/biossíntese , Doenças Respiratórias/veterinária , Animais , Basigina/metabolismo , Western Blotting/veterinária , Líquido da Lavagem Broncoalveolar , Doença Crônica , Feminino , Doenças dos Cavalos/metabolismo , Cavalos , Inflamação , Pulmão/enzimologia , Pulmão/metabolismo , Masculino , Doenças Respiratórias/enzimologia , Doenças Respiratórias/metabolismo
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