Document Detail


The influence of interleukin-4 on ligament healing.
MedLine Citation:
PMID:  21518087     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Despite a complex cascade of cellular events to reconstruct the damaged extracellular matrix, ligament healing results in a mechanically inferior scarred ligament. During normal healing, granulation tissue expands into any residual normal ligamentous tissue (creeping substitution), resulting in a larger region of healing, greater mechanical compromise and an inefficient repair process. To control creeping substitution and possibly enhance the repair process, the antiinflammatory cytokine, interleukin-4 (IL-4), was administered to rats before and after rupture of their medial collateral ligaments. In vitro experiments showed a time-dependent effect on fibroblast proliferation after IL-4 treatment. In vivo treatments with IL-4 (100 ng/mL IV) for 5 days resulted in decreased wound size and type III collagen and increased type I procollagen, indicating a more regenerative early healing in response to the IL-4 treatment. However, continued treatment of IL-4 to day 11 antagonized this early benefit and slowed healing. Together, these results suggest that IL-4 not only influences the macrophages and T lymphocytes but also stimulates fibroblasts associated with the proliferative phase of healing in a dose-, cell-, and time-dependent manner. Although treatment significantly influenced healing in the first week after injury, IL-4 alone was unable to maintain this early regenerative response.
Authors:
Connie S Chamberlain; Ellen M Leiferman; Kayt E Frisch; Sijian Wang; Xipei Yang; Stacey L Brickson; Ray Vanderby
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-4-21
Journal Detail:
Title:  Wound repair and regeneration : official publication of the Wound Healing Society [and] the European Tissue Repair Society     Volume:  -     ISSN:  1524-475X     ISO Abbreviation:  -     Publication Date:  2011 Apr 
Date Detail:
Created Date:  2011-4-26     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9310939     Medline TA:  Wound Repair Regen     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2011 by the Wound Healing Society.
Affiliation:
Department of Orthopedics and Rehabilitation Department of Biomedical Engineering Department of Biostatistics and Medical Informatics, University of Wisconsin, Madison, Wisconsin.
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