Immunomodulatory effect of Linalool (Lin) against CCl4-induced hepatotoxicity and oxidative damage in rats

The current study explored the hepatoprotective and immunomodulatory effects of Linalool (Lin) against carbon tetrachloride (CCl4)-induced toxicity in mice. Four study groups (n = 8 each) were used: (1) a negative control group and (2) a toxicity control group (single dose of CCl4 administered on day 14 as 1 mL/kg of CCL4 in 1% olive oil). Intraperitoneally (i.p.)), and two experimental groups where mice were treated with either (3) Lin (25 mg/kg b.w., orally, daily for 15 days) or (4) pretreated with Lin (25 mg/kg b.w., orally, daily for 14 days) and intoxicated with CCl4 (1 mL/kg of CCL4 in 1% olive oil. i.p.) on day 14. The levels of the anti-inflammatory cytokine interleukin 10 (IL-10), the proinflammatory cytokines TNF-alpha, IL-6, and TGF-1 beta, and the histopathology of the liver were assessed. According to our findings, IL-10 concentrations were significantly increased in Lin-treated groups, while other cytokine levels were marked by a considerable decrease in the toxicity model group (CCl4-treated group). Histopathological examinations of liver tissues showed that the Lin-treated groups had an almost normal structure. The current findings showed that Lin could inhibit CCl4-induced liver injury in mice, which warrants further investigation of Lin as a potential protective and therapeutic agent against hepatotoxicity.

Automated summary

This study investigated the hepatoprotective and immunomodulatory effects of Linalool against carbon tetrachloride-induced liver toxicity in mice. The results showed that Linalool could increase the concentration of interleukin 10 while decreasing the levels of other cytokines, thereby inhibiting liver injury caused by carbon tetrachloride.