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An Acad Bras Cienc ; 94(suppl 3): e20191339, 2022.
Article in English | MEDLINE | ID: mdl-36074423

ABSTRACT

The antinociceptive and anti-inflammatory activities of crude ethanolic extract of Celtis iguanaea leaves and their active fractions are reported. The oral treatment with crude ethanolic extract (CEE; 100, 300 or 1000 mg/Kg) inhibited the number of writhings in a dose-dependent manner. The intermediate dose also inhibited formalin-induced nociception in both phases. The oral treatment with dichloromethane fraction (DF; 9 mg/Kg) produced antinociceptive effect in both phases of formalin test; however, the treatment with ethyl acetate fraction (EAF; 16 mg/Kg) reduced pain only in the second phase of this test. The oral treatments with CEE (300 mg/Kg) or DF (9 mg/Kg) reduced the nociception induced by capsaicin and pre-treatment with naloxone did not change these effects. The oral administration of CEE (300 mg/Kg), DF (9 mg/Kg) or ethyl EAF (16 mg/Kg) reduced ear edema, leukocytes migration and myeloperoxidase activity. Furthermore, the oral treatment with CEE (300 mg/Kg) or EAF (16 mg/Kg) reduced the level of Tumor Necrosis Factor - Alpha (TNF-α) in the pleurisy test. In conclusion, the DF showed antinociceptive activity that involves the vanilloid system as well as anti-inflammatory effect and the EAF showed anti-inflammatory activity involving the reduction of TNF-α cytokine.


Subject(s)
Analgesics , Tumor Necrosis Factor-alpha , Analgesics/pharmacology , Analgesics/therapeutic use , Animals , Anti-Inflammatory Agents/pharmacology , Anti-Inflammatory Agents/therapeutic use , Edema/drug therapy , Ethanol , Mice , Plant Extracts/pharmacology , Plant Extracts/therapeutic use , Plant Leaves , Ulmaceae
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