RESUMEN
OBJECTIVE: Carbon tetrachloride (CCl4) is a non-polar molecule used in industry in grain curing, insect-killing and especially in the production of chlorofluorocarbons. It is estimated that an average of 70,000 industry workers in Europe are exposed to this toxic compound. MATERIALS AND METHODS: Twenty-four male Sprague-Dawley rats were randomly allocated into four groups: control group (saline only, Group I), infliximab (INF) group (Group II), CCl4 group (Group III) and CCl4+INF group (Group IV). RESULTS: While there was an increase in the numerical density of CD3, CD68, and CD200R positive T lymphocytes and macrophages in the CCl4 administration group (p=0.000), this was not the case in the CCl4+INF administration group (p=0.000). CONCLUSIONS: TNF-α inhibitors have a protective effect against CCl4-induced spleen toxicity/inflammation as seen by the reduction in CD3, CD68, CD200R positive T lymphocytes and macrophages.