Is the orofacial antinociceptive effect of lectins intrinsically related to their specificity to monosaccharides?

• Published in: International journal of biological macromolecules Vol. 161; pp. 1079 - 1085
• Main Authors: de Oliveira Leite, Gerlânia, Santos, Sacha Aubrey Alves Rodrigues, Bezerra, Francisca Magnólia Diógenes Holanda, Sena e Silva, Francisco Evilyn, de Castro Ribeiro, Antonia Deyse, Roma, Renato Rodrigues, Silva, Romério Rodrigues Santos, Santos, Maria Helena Cruz, Santos, Ana Lucia Estevam, Teixeira, Claudener Souza, Campos, Adriana Rolim
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 15.10.2020
• Subjects: Animals; Anti-Inflammatory Agents - chemistry; Anti-Inflammatory Agents - pharmacology; Antinociceptive; Chemical Fractionation; Chromatography, Gel; Hemagglutination; Hemagglutination Tests; Lectins; Lectins - chemistry; Lectins - isolation & purification; Lectins - pharmacology; Monosaccharides - chemistry; Vasoconstrictor Agents - chemistry; Vasoconstrictor Agents - pharmacology; Zebrafish; Lectins; Antinociceptive; Zebrafish
• ISSN: 0141-8130; 1879-0003
• DOI: 10.1016/j.ijbiomac.2020.06.132

Lectins are proteins of non-immunological origin that may play several biological applications, of which we can highlight the anti-inflammatory and antinociceptive activities. In this work, we evaluated the possible effect of orofacial antinociceptive activity of three plant lectins, Dioclea violacea (DVL - Man/Glc-binding), Vatairea macrocarpa (VML - Gal-binding) and PPL (Parkia platycephala - Man/Glc-binding) in adult zebrafish. Acute nociception was induced by menthol (1.2 μM), or capsaicin (4.93 μM) applied into in the upper lip (5.0 μL) of adult wild zebrafish. Zebrafish were pretreated by intraperitoneal injection (20 μL) with vehicle (Control) or lectins (0.025; 0.05 or 0.1 mg/mL) 30 min before induction. The effect of lectins on zebrafish locomotor behavior was evaluated with the open field test. Naive groups (n = 8) were included in all tests. Our results indicate that only PPL presented antinociceptive induced by capsaicin, suggesting the potential clinical application of PPL as inhibitor of orofacial nociception and that this effect may be due to the modulation of TRPV1 channel. In conclusion, lectins that exhibit affinity to the same or different carbohydrates do not necessarily have an antinociceptive effect on the orofacial nociception model, indicating that the glycan carbohydrate binding pattern may be related to the effect on nociception inhibition.