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Effects of Azithromycin on Behavior, Pathologic Signs, and Changes in Cytokines, Chemokines, and Neutrophil Migration in C57BL/6 Mice Exposed to Dextran Sulfate Sodium.
- Source :
-
Comparative medicine [Comp Med] 2019 Feb 01; Vol. 69 (1), pp. 4-15. Date of Electronic Publication: 2018 Dec 13. - Publication Year :
- 2019
-
Abstract
- Here we characterized the murine dextran sulfate sodium (DSS) model of acute colitis. Specifically, we evaluated azithromycin and metronidazole treatment regimens to assess their effects on animal wellbeing, pathologic changes, barrier function, cytokine and chemokine profiles, and neutrophil migration in colon tissue. Azithromycin treatment significantly reduced the severity of colitis, as assessed through body weight change, water consumption, macroscopic lesions, and animal behaviors (activity level, climbing, and grooming), but did not alter food consumption or feeding behavior. Mucosal barrier function (evaluated by using FITC-labeled dextran) was decreased after DSS exposure; azithromycin did not significantly alter barrier function in mice with colitis, whereas metronidazole exacerbated the colitis-related deficit in barrier function. In addition, metronidazole appeared to exacerbate disease as assessed through water consumption and animal behaviors (overall activity, climbing, grooming, and drinking) but had no effect on weight loss, macroscopic lesions, or eating behavior. Pathologic changes were typical for DSS treatment. Antibiotic treatment resulted in reduced levels of proinflammatory cytokines and chemokines and decreased neutrophil adhesion and emigration in DSS-exposed mice. The results highlight the importance of clinical and behavioral assessments in addition to laboratory evaluation as tools to evaluate animal welfare and therapeutic efficacy in disease models. Data from this study suggest that azithromycin may convey some benefits in the mouse DSS colitis model through modulation of the immune response, including neutrophil migration into tissues, whereas metronidazole may exacerbate colitis.
- Subjects :
- Animals
Azithromycin therapeutic use
Cell Movement drug effects
Chemokines blood
Colitis chemically induced
Colitis drug therapy
Colon pathology
Disease Models, Animal
Metronidazole pharmacology
Mice
Mice, Inbred C57BL
Azithromycin pharmacology
Behavior, Animal drug effects
Colon drug effects
Dextran Sulfate toxicity
Neutrophils drug effects
Subjects
Details
- Language :
- English
- ISSN :
- 2769-819X
- Volume :
- 69
- Issue :
- 1
- Database :
- MEDLINE
- Journal :
- Comparative medicine
- Publication Type :
- Academic Journal
- Accession number :
- 30545428
- Full Text :
- https://doi.org/10.30802/AALAS-CM-18-000001