Local proinflammatory effects of repeated skin exposure to warfarin, an anticoagulant rodenticide in rats / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 180-189, 2011.
Article
Dans Anglais
| WPRIM
| ID: wpr-306874
ABSTRACT
<p><b>OBJECTIVE</b>To evaluate the effects of epicutaneous application of anticoagulant warfarin, by examining the presence of tissue injury and immune/inflammatory activity in exposed skin.</p><p><b>METHODS</b>Rats were exposed to warfarin by applying 10 μg of warfarin-sodium to 10-12 cm(2) skin (range 0.8-1 μg per 1 cm(2)) for 3 consecutive days. Tissue injury was evaluated by lipid peroxidation, histomorphological changes and signs of reparative activity in skin. T cell infiltration and selected aspects of epidermal cell activity were examined as indicators of immune/inflammatory skin response to warfarin application.</p><p><b>RESULTS</b>Repeated warfarin application exerted no effect on skin metabolic viability, but resulted in tissue injury (increased malondialdehyde, MDA, production, evident histo-morphological changes in epidermis and dermis depicting cell injury and death). Increased numbers of proliferating cell nuclear antigen (PCNA(+)) cells indicated reparative processes in injured skin. Infiltration of CD3(+) cells (T lymphocytes) along with the increased production of tumor necrosis factor-a (TNF-a) by epidermal cells from warfarin-treated skin and their co-stimulatory effect in an in vitro T-cell activation assay demonstrated immunomodulatory effects of epicutaneous warfarin.</p><p><b>CONCLUSION</b>Presented data have documented tissue damage associated with immune/inflammatory activity in skin exposed to warfarin. Observed effects are relevant to immunotoxic potential of this anticoagulant in settings of external exposure.</p>
Texte intégral:
Disponible
Indice:
WPRIM (Pacifique occidental)
Sujet Principal:
Anatomopathologie
/
Pharmacologie
/
Physiologie
/
Raticides
/
Peau
/
Warfarine
/
Lymphocytes T
/
Peroxydation lipidique
/
Régulation de l'expression des gènes
/
Antigènes CD3
Limites du sujet:
Animaux
langue:
Anglais
Texte intégral:
Biomedical and Environmental Sciences
Année:
2011
Type:
Article
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