Effect of anisodamine on endoplasmic reticulum stress during acute kidney injury in rats / 中华麻醉学杂志

ABSTRACT

Objective To evaluate the effect of anisodamine on endoplasmic reticulum stress during acute kidney injury (AKI) in rats.Methods Forty-two nale Sprague-Dawley rats,weighing 200-220 g,were randomly divided into 3 groupscontrol group (group C,n =6),AKI group (n =18) and anisodamine group (group AD,n =18).AKI was induced by intramuscular injection of 50％ (v/v) glycerol 10 ml/kg into bilateral hind limbs in groups AKI and AD.In addition,anisodamine 10 mg/kg was injected intraperitoneally 20 min before intramuscular injection of glycerol in group AD.In group C the rats received intramuscular injection of normal saline 10 ml/kg into bilateral hind limbs.Six rats were chosen immediately after injection of normal saline in group C or at 1,6 and 24 h after glycerol injection in groups AKI and AD and then anethetized with intraperitoneal pentobarbital.The animals were sacrificed and kidney specimens were obtained and cut into sections which were stained with hematoxylin and eosin for pathological examination.The pathological changes of the renal tubules were scored.The expression of glucose-regulated protein 78 (GRP78) and oxygen-regulated protein 150 (ORP150) in renal tissues was determined by immuno-histochemistry and Western blot.Results Compared with group C,the pathological scores were significantly increased and the expression of GRP78 and ORP150 was up-regulated at all time points in groups AKI and AD (P ＜ 0.01).Compared with group AKI,the pathological scores were significantly decreased and the expression of GRP78 and ORP150 was down-regulated at all time points in group AD (P ＜ 0.05 or 0.01).Conclusion Anisodamine can ameliorate AKI through inhibiting endoplasmic reticulum stress in renal tubular epithelial cells and decreasing endoplasmic reticulum stress-induced cell apoptosis in rats.