Dual effects of a lectin from the green seaweed Caulerpa cupressoides var. lycopodium on inflammatory mediators in classical models of inflammation

作者：Lino de Queiroz Ismael Nilo; Gomes Quindere Ana Luiza; Gurgel Rodrigues Jose Arievilo; Oliveira Vanderlei Edfranck de Sousa; Ribeiro Natassia Albuquerque; da Conceicao Rivanor Renata Line; Ribeiro Katia Alves; Coura Chistiane Oliveira; Alves Pereira Karuza Maria; Chaves Helliada Vasconcelos; Bezerra Mirna Marques; Fernandes de Araujo Ianna Wivianne; Barros Benevides Norma Maria

来源：Inflammation Research, 2015, 64(12): 971-982.

DOI：10.1007/s00011-015-0880-3

• Inflammation
• Modulatory mechanisms
• Marine alga
• Paw edema

Objective Wide biotechnological investigations of only a limited number of seaweed lectins have been performed. We previously demonstrated the anti-nociceptive and anti-inflammatory effects of a lectin isolated from the green seaweed Caulerpa cupressoides var. lycopodium (CcL). Herein, we further studied the mechanisms of action of CcL.
Methods Classical acute inflammation models induced by different flogistic agents were used to evaluate the anti-inflammatory action of CcL. CcL was injected locally into the rat paw to verify a possible pro-inflammatory outcome.
Results CcL (0.1, 1 or 10 mg/kg; i.v.) reduced the carrageenan-induced rat paw edema and neutrophilic infiltration, which was not altered by either mucin (inhibitor of CcL carbohydrate-binding site) or ZnPP-IX (specific HO-1 inhibitor). Immunohistochemical analyses showed that CcL (1 mg/kg) reduced the expression of the cytokines IL-1 beta, TNF-alpha, IL-6 and COX-2. CcL (0.1, 1 or 10 mg/kg) inhibited dextran, and CcL (1 mg/kg) inhibited histamine-induced rat paw edema. Both effects were reversed by mucin inhibition. CcL (1 mg/kg) was ineffective for the treatment of serotonin- and bradykinin-induced rat paw edema. When injected via the i.pl. route, CcL (10 mg/kg) elicited rat paw edema involving a wide range of mediators.
Conclusions The anti-inflammatory action of CcL involves the inhibition of IL-1 beta, TNF-alpha, IL-6 and COX-2 expression and histamine H-1 receptors. When locally administered, CcL exerts pro-inflammatory actions.

• 出版日期2015-12
• 单位河北医科大学