Evaluation of collagenase activity, matrix metalloproteinase-8, and matrix metalloproteinase-13 in horses with chronic obstructive pulmonary disease
| Autor: | Timo Sorsa, Päivi Maisi, Saara Raulo, Markus T. Kiili |
|---|---|
| Rok vydání: | 2001 |
| Předmět: |
Male
Pathology medicine.medical_specialty 040301 veterinary sciences Neutrophils Immunocytochemistry Blotting Western In situ hybridization Matrix metalloproteinase Statistics Nonparametric 0403 veterinary science 03 medical and health sciences Pulmonary Disease Chronic Obstructive Matrix Metalloproteinase 13 Medicine Animals Clinical significance Collagenases Horses In Situ Hybridization 030304 developmental biology Collagenase activity 0303 health sciences COPD General Veterinary medicine.diagnostic_test business.industry 04 agricultural and veterinary sciences General Medicine medicine.disease Immunohistochemistry Trachea Bronchoalveolar lavage Matrix Metalloproteinase 8 Collagenase Electrophoresis Polyacrylamide Gel Female Horse Diseases Collagen business Bronchoalveolar Lavage Fluid medicine.drug |
| Zdroj: | American journal of veterinary research. 62(7) |
| ISSN: | 0002-9645 |
| Popis: | Objectives—To determine collagenase activity and evaluate matrix metalloproteinase (MMP)-8 and MMP-13 in horses with chronic obstructive pulmonary disease (COPD). Animals—12 horses with COPD and 12 healthy control horses. Procedure—Collagenase activity was determined by use of an assay for degradation of type-I collagen. Western immunoblot analysis was used to identify interstitial collagenases MMP-8 and MMP-13 in tracheal epithelial lining fluid (TELF). Immunocytochemistry and in situ hybridization were used to determine cellular expression of these 2 collagenases in cells in bronchoalveolar lavage fluid (BALF). Results—Collagenase activity was approximately 7 times higher in samples obtained from horses with COPD, compared with control horses. During stabling, horses with COPD had significantly higher collagenase activity than after being maintained on summer pasture, when activity was similar to that of control horses. Immunoreactivity of MMP-8 and MMP-13 was significantly increased in TELF of horses with COPD, compared with healthy horses. In TELF, a positive correlation was detected between immunoreactivity of MMP-8 and MMP-13 and the amount of degradation of type-I collagen. Macrophages and epithelial cells were the major cellular sources of MMP-8 and MMP-13. Conclusions and Clinical Relevance—Increased collagenase activity in TELF indicates active ongoing disease and, thus, may reflect lung tissue changes in horses with COPD. Measurements of collagenase activity and MMP immunoreactivity may provide additional diagnostic tools to identify the active phase of chronic lung disease. (Am J Vet Res 2001;62:1142–1148) |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|