Carvacrol is a phenolic monoterpenoid compound that has antibacterial, antifungal, anti-cancer, and anti-inflammatory effects. Lipopolysaccharide (LPS) is derived from the outer cell wall of gram-negative bacteria and is responsible for acute kidney injury. In this rese
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Carvacrol is a phenolic monoterpenoid compound that has antibacterial, antifungal, anti-cancer, and anti-inflammatory effects. Lipopolysaccharide (LPS) is derived from the outer cell wall of gram-negative bacteria and is responsible for acute kidney injury. In this research, the protective effect of carvacrol on lipopolysaccharide-induced acute kidney injury was studied. For this purpose, 40 male Wistar rats (200-250 g) were used. Animals were randomly divided into 5 equal groups: 1) control, 2) LPS group, 3) LPS+carvacrol (25 mg kg-1), 4) LPS+carvacrol (50 mg kg-1) and 5) LPS+carvacrol (100 mg kg-1). To induce acute renal injury, daily 1 mg kg-1 LPS for 2 weeks was injected intraperitoneally. Carvacrol was administered intraperitoneally daily for 30 minutes before LPS injection. LPS-induced kidney injury was evaluated by blood urea nitrogen (BUN), serum creatinine, and nitric oxide levels in kidney tissue by spectrophotometric methods. The level of the interleukin 1 beta was detected by ELISA in the kidney. Our results showed that LPS injection increased BUN, creatinine, nitric oxide, and IL-1β levels (P <0.001). Pretreatment with carvacrol reduced BUN at 25 mg kg-1 (P <0.001), 50 mg kg-1 (P <0.01), and 100 mg kg-1 (P <0.001) doses, nitric oxide at 25 mg kg-1 (P <0.05), 50 mg kg-1(P <0.01) and 100 mg kg-1(P <0.001) doses, and IL-1β levels (P <0.001) at all doses significantly but did not affect serum creatinine. These results indicate that carvacrol has an anti-inflammatory effect and protects kidneys against LPS by reducing pro-inflammatory mediators such as IL-1β and nitric oxide.
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