Journal of Practical Hepatology ›› 2021, Vol. 24 ›› Issue (3): 323-326.doi: 10.3969/j.issn.1672-5069.2021.03.005

• Hepatitis in rats and mice • Previous Articles     Next Articles

Alleviation of ConA-induced liver injury by protocatechuic acid in mice

Wang Lihui, Zhang Jiaxiang , Liu Shuangping, et al   

  1. Department of Infectious Diseases, Southeast Hospital/909th Hospital of PLA, Joint Logistics Support Force, Affiliated to Xiamen University, Xiamen 363000,Fujian Province, China
  • Received:2020-07-10 Online:2021-05-30 Published:2021-04-30

Abstract: Objective The aim of this study was to investigate the effects of protocatechuic acid (PA) on hepatic malondialdehyde (MDA), nitric oxide (NO), superoxide dismutase (SOD) and glutathione peroxidase (GSH-PX) activities in mice with concanavalin A (ConA)-induced immune liver injury.Methods 60 Kunming mice were randomly divided into control, model, low-dose, middle-dose and high-dose (2.5 mg.kg-1.d-1、5 mg.kg-1.d-1、10 mg.kg-1.d-1) of PA-intervened and 0.2 g.kg-1.d-1 of bifendate-intervened group, with 10 in each. The mice in control group and in model group were intragastricly given normal saline for 10 days, and in other groups were intragastricly given PA or bifendate for 10 days. One hour after the last administration, the ConA were injected through tail vein once to induce immune liver injury models. Serum interleukin-4 (IL-4), IL-6, tumor necrosis factor-α (TNF-α) and the MDA, NO, SOD and GSH-PX activities in hepatic homogenate were assayed.Results The liver indexes, spleen indexed, serum ALT and AST, serum IL-4, IL-6 and TNF-α in any dose of PA-intervened groups decreased significantly compared to those in the model (P<0.05); the hepatic MDA and NO activities in model group were (5.2±0.5)nmol/mg and (8.0±0.9)μmol/L, while they both decreased to [(4.7±0.4)nmol/mg, (4.3±0.3)nmol/mg and (3.9±0.3)nmol/mg or (6.8±0.8)μmol/L,(6.2±0.7)μmol/L and(5.8±0.7)μmol/L, respectively, P<0.05] in low-dose, middle-dose and large-dose of PA-intervened groups; the hepatic SOD and GSH-PX activities in model were (59.4±3.6)U/mg and(85.2±9.6)U/mg, while they both increased to [(74.2±4.4)U/mg,(85.2±5.3)U/mg and (99.2±5.9)U/mg or(107.3±13.4)U/mg,(115.2±12.8)U/mg and (139.3±12.9)U/mg, respectively, P<0.05] in low-dose, middle-dose and large-dose of PA-intervened groups.Conclusion PA could alleviate ConA-induced liver injury in mice, which might be related to the increased activity of endogenous antioxidant enzymes in liver tissues.

Key words: Immune liver injury, Protocatechuic acid, Concanavalin A, Oxygen free radical, Mice