Analgesic and Anti-Inflammatory Activities of Salicylaldehyde 2-Chlorobenzoyl Hydrazone (H2LASSBio-466), Salicylaldehyde 4-Chlorobenzoyl Hydrazone (H2LASSBio-1064) and Their Zinc(II) Complexes
作者:Walfrido Bispo Júnior、Magna S. Alexandre-Moreira、Marina A. Alves、Anayive Perez-Rebolledo、Gabrieli L. Parrilha、Eduardo E. Castellano、Oscar E. Piro、Eliezer J. Barreiro、Lídia Moreira Lima、Heloisa Beraldo
DOI:10.3390/molecules16086902
日期:——
Salicylaldehyde 2-chlorobenzoyl hydrazone (H2LASSBio-466), salicylaldehyde 4-chlorobenzoyl hydrazone (H2LASSBio-1064) and their complexes [Zn(LASSBio-466)H2O]2 (1) and [Zn(HLASSBio-1064)Cl]2 (2) were evaluated in animal models of peripheral and central nociception, and acute inflammation. All studied compounds significantly inhibited acetic acid-induced writhing response. Upon coordination the anti-nociceptive activity was favored in the complex 1. H2LASSBio-466 inhibited only the first phase of the formalin test, while 1 was active in the second phase, like indomethacin, indicating its ability to inhibit nociception associated with the inflammatory response. Hence coordination to zinc(II) altered the pharmacological profile of H2LASSBio-466. H2LASSBio-1064 inhibited both phases but this effect was not improved by coordination. The studied compounds did not increase the latency of response in the hot plate model, indicating their lack of central anti-nociceptive activity. All compounds showed levels of inhibition of zymosan-induced peritonitis comparable or superior to indomethacin, indicating an expressive anti-inflammatory profile.
水杨醛2-氯苯甲腇(H2LASSBio-466)、水杨醛4-氯苯甲腇(H2LASSBio-1064)及其配合物[Zn(LASSBio-466)H2O]2(1)和[Zn(HLASSBio-1064)Cl]2(2)在外周和中枢痛觉反应及急性炎症的动物模型中进行了评估。所有研究的化合物均显著抑制了醋酸诱导的扭体反应。在配位后,复合物1的抗痛觉活性得到了增强。H2LASSBio-466仅抑制了形式的测试中的第一阶段,而1在第二阶段中表现活跃,如吲哚美辛,表明其能够抑制与炎症反应相关的痛觉。因此,配位锌(II)改变了H2LASSBio-466的药理特征。H2LASSBio-1064抑制了两个阶段,但这种效果在配位后并没有改善。研究的化合物未增加热板模型中的反应潜伏期,表明其缺乏中枢抗痛觉活性。所有化合物对酵母菌诱导的腹膜炎的抑制水平与吲哚美辛相当或更高,表明其具有显著的抗炎特性。