The antinociceptive effects of interleukin (IL)-4, -10, and -13 were investigated in two different experimental pain models. Our results showed that pretreatment (30 min) with IL-4 (1–5 ng/animal), IL-10 (0.4–10 ng/animal), or IL-13 (0.4 –2.5 ng/animal) inhibited the writhing response induced by the i.p. administration of acetic acid (53–89%) or zymosan (63–74%) in mice, and the knee joint incapacitation induce...