Effect of Guizhi Fuling Capsule on NF-κB/MAPK Signaling Pathway in Rats with Endometritis / 世界科学技术-中医药现代化

ABSTRACT

Objective To investigate the effect of Guizhi Fuling Capsule on NF-κB and MAPK signaling pathway in lipopolysaccharide(LPS)-induced rat endometritis model.Methods The rats were randomly divided into 6 groups according to body weight,namely sham-operation group,model group,positive group(dexamethasone,2.5 mg·kg-1),Guizhi Fuling Capsule high-dose,medium-dose and low-dose groups(0.54,0.27,0.14 g·kg-1),with 10 rats in each group.The sham operation group and the model group were given 0.5%CMC-Na by gavage,and the other groups were given corresponding drugs by gavage once a day for 7 consecutive days.One hour after the last administration,the animals were anesthetized by intraperitoneal injection of 10%chloral hydrate.The rats in the sham operation group only underwent laparotomy and abdominal closure.The left uterus of the rats in the other groups was scratched and injected with a syringe(1.0 μg·μL-1)LPS normal saline solution 0.25 mL.24 hours after LPS injection,the uterine tissues of rats were collected and the pathological changes and MPO,TNF-α,IL-1β,IL-6 were measured in uterine tissues.The expression levels of NF-κB p65,IκBα,ERK,p38 and their phosphorylated proteins were measured in uterine tissues.Results Compared with sham operation group,histopathological score,MPO,TNF-α,IL-1β and IL-6 levels in model group were significantly increased(P<0.01),and NF-κBp65,IκBα,ERK,p38 protein phosphorylation levels were significantly increased(P<0.01).Compared with model group,Guizhi Fuling capsule significantly decreased pathological score of uterus,TNF-α,IL-1β,and IL-6 levels(P<0.01),and significantly decreased NF-κBp65,IκBα,ERK,p38 protein phosphorylation levels(P<0.01).Conclusion Guizhi Fuling capsule plays an anti-inflammatory role in endometritis by inhibiting the transmission of NF-κB and MAPK signaling pathways and inhibiting the secretion of inflammatory factors IL-1β,TNF-α and IL-6 in uterine tissue.