Abstract
To clarify the effect of lidocaine hydrochloride (Lid) on bovine peripheral granulocyte phagocytosis, adhesion molecule expression of leukocytes and peripheral blood mononuclear cell mRNA expression of cytokines were investigated. Lid was added to blood samples at a final concentration of 0 (only PBS; Cont), 0.2 mg/ml or 2.0 mg/ml. Phagocytosis of granulocytes was significantly decreased by addition of 2.0 mg/ml of Lid. CD18 expression of granulocytes and mononuclear cells were significantly reduced by addition of 2.0 mg/ml of Lid. IL-1beta and IL-8 mRNA expressions of mononuclear cells were also significantly reduced by addition of 2.0 mg/ml of Lid other hand. These results suggest that Lid might reduce the protective immunity of cows. On the other hand, reduction of CD18, IL-1beta and IL-8 mRNA expression also indicates that Lid has an anti-inflammatory effect in cows.
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