Article (Scientific journals)
Equine neutrophil elastase in plasma, laminar tissue, and skin of horses administered black walnut heartwood extract.
de la Rebière de Pouyade, Geoffroy; Riggs, L. M.; Moore, J. N. et al.
2009In Veterinary Immunology and Immunopathology
Peer Reviewed verified by ORBi
 

Files


Full Text
de-la-Rebiere-de-Pouyade_2009_Veterinary-Immunology-and-Immunopathology_1.pdf
Publisher postprint (684.81 kB)
Request a copy

All documents in ORBi are protected by a user license.

Send to



Details



Abstract :
[en] Laminitis is a local manifestation of a systemic inflammatory response that is characterized by neutrophil activation and movement of neutrophils into the laminar tissues. Given the evidence for the involvement of neutrophils in the development of laminitis, we measured concentrations of neutrophil elastase, a serine protease released from the azurophilic granules of neutrophils, in plasma, skin and laminar tissues obtained from control horses and horses given black walnut heartwood extract (BWHE) to induce laminitis. Healthy horses (5-15 years old) were randomly assigned to 4 groups: 3 experimental groups given BWHE via nasogastric tube, and a control group given an equal volume of water. The experimental groups consisted of horses euthanized 1.5h (n=5), 3h (n=6) or 12h (n=10) after BWHE administration. Control horses (n=7) were euthanized 12h after intragastric administration of water. Plasma samples were collected in all horses of the control and 12h BWHE groups at 0, 1, 2, 3, 4, 6, 8, 10, and 12h after treatment, and laminar tissue and skin from the middle region of the neck were harvested at the time of euthanasia in all 1.5 and 3h BWHE horses, in 6 of the 12h BWHE horses and in 5 of the control horses. Plasma and tissue concentrations of neutrophil elastase were determined using an equine specific ELISA, and statistical significance was set at p<0.05. Plasma concentrations of neutrophil elastase in the BWHE group were significantly higher at 6 and 8h compared to the control group and at 8 and 10h compared to time 0. Concentrations of neutrophil elastase in skin and laminar tissue were significantly higher in the 3 and 12h BWHE groups compared to the control group. Concentrations of neutrophil elastase were significantly higher in the skin than in the lamina in the 12h BWHE horses. The administration of BWHE thus results in significant increases in the concentration of neutrophil elastase in the circulation, skin and laminar tissue. These results confirm a role for neutrophils in the developmental phase of laminitis, and the systemic nature of the inflammatory process. Furthermore, neutrophil elastase may play a key role in the disintegration of the hoof basal membrane and be a target for the development of new treatments for laminitis.
Research center :
CORD - Centre de l'Oxygène, Recherche et Développement - ULiège
Disciplines :
Veterinary medicine & animal health
Author, co-author :
de la Rebière de Pouyade, Geoffroy  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux
Riggs, L. M.
Moore, J. N.
Franck, Thierry  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux
Deby-Dupont, Ginette
Hurley, D. J.
Serteyn, Didier  ;  Université de Liège - ULiège > Département clinique des animaux de compagnie et des équidés > Anesthésiologie gén. et pathologie chirurg. des grds animaux
Language :
English
Title :
Equine neutrophil elastase in plasma, laminar tissue, and skin of horses administered black walnut heartwood extract.
Publication date :
2009
Journal title :
Veterinary Immunology and Immunopathology
ISSN :
0165-2427
eISSN :
1873-2534
Publisher :
Elsevier, Amsterdam, Netherlands
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FRIA - Fonds pour la Formation à la Recherche dans l'Industrie et dans l'Agriculture [BE]
Available on ORBi :
since 12 January 2010

Statistics


Number of views
99 (19 by ULiège)
Number of downloads
3 (0 by ULiège)

Scopus citations®
 
31
Scopus citations®
without self-citations
19
OpenCitations
 
33

Bibliography


Similar publications



Contact ORBi