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Impaired cutaneous wound healing in interleukin-6-deficient and immunosuppressed mice.

Authors
Gallucci-RM; Simeonova-PP; Matheson-JM; Kommineni-C; Guriel-JL; Sugawara-T; Luster-MI
Source
FASEB J 2000 Dec; 14(15):2525-2531
NIOSHTIC No.
20020676
Abstract
It has been postulated that an inflammatory response after cutaneous wounding is a prerequisite for healing, and inflammatory cytokines, such as interleukin-6 (IL-6), might be intimately involved in this process. IL-6-deficient transgenic mice (IL-6 KO) displayed significantly delayed cutaneous wound healing compared with wild-type control animals, requiring up to threefold longer to heal. This was characterized by minimal epithelial bridge formation, decreased inflammation, and granulation tissue formation. Using electrophoretic mobility shift assays of wound tissue from IL-6 KO mice, decreased AP-1 transcription factor activation was shown compared with wild-type mice 16 h after wounding. In situ hybridization of wound tissue from wild-type mice revealed IL-6 mRNA expression primarily in the epidermis at the leading edge of the wound. Delayed wound healing in IL-6 KO mice was reversed with a single dose of recombinant murine IL-6 or intradermal injection of an expression plasmid containing the full-length murine IL-6 cDNA. Treatment with rmIL-6 also reconstituted wound healing in dexamethasone-treated immunosuppressed mice. The results of this study may indicate a potential use for IL-6 therapeutically where cutaneous wound healing is impaired.
Keywords
Laboratory-animals; Animals; Animal-studies; Injuries; Health-care; Occupational-health
Contact
Toxicology and Molecular Biology Branch, Health Effects Laboratory Division, National Institute for Occupational Safety and Health MS 3014, 1095 Willowdale Rd., Morgantown, WV 26505, USA
CODEN
FAJOEC
Publication Date
20001201
Document Type
Journal Article
Email Address
myl6@cdc.gov
Fiscal Year
2001
NTIS Accession No.
NTIS Price
Issue of Publication
15
ISSN
0892-6638
NIOSH Division
HELD
Source Name
The FASEB Journal
State
WV
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