摘要目的:探讨致命鹅膏致版纳微型猪肝衰竭的特点。方法:于2020年9至10月，采用反向高效液相色谱法（RP-HPLC）测定致命鹅膏水溶液毒素含量，以2.0 mg/kg致命鹅膏水溶液（α-鹅膏毒肽+β-鹅膏毒肽）经口灌胃版纳微型猪，染毒后观察各时间点的中毒症状、血液生化指标，以及肝脏、心脏和肾脏组织病理学改变。结果:版纳微型猪于染毒76 h内全部死亡，且在6~36 h出现不同程度的消化道症状，如恶心、呕吐和腹泻等表现；生化指标中丙氨酸转氨酶、天冬氨酸转氨酶、总胆红素、乳酸脱氢酶、肌红蛋白、肌酸激酶同工酶、血尿素氮、肌酐于染毒后52 h明显升高，与0 h比较，差异均有统计学意义（ P<0.05）；肝脏及心脏肉眼及镜下观察出血明显，肝细胞出现坏死，肾小管上皮细胞肿胀。 结论:大剂量致命鹅膏可致版纳微型猪急性肝衰竭，符合急性肝衰竭的病理生理特点，为进一步研究致命鹅膏致肝衰竭的中毒机制及解毒药物奠定基础。

abstractsObjective:To explore the characteristics of Banna miniature pig liver failure induced by amanita exitialis.Methods:From September to October 2020, a reverse high performance liquid chromatography (RP-HPLC) method was used to determine the toxin content of amanita exitialis solution, and 2.0 mg/kg amanita exitialis solution (α-amanitins+β-amanitins) was administered orally to Banna miniature pigs. Toxic symptoms, blood biochemical indexes and histopathological changes of liver, heart and kidney were observed at each time point.Results:All Banna miniature pigs died within 76 h of exposure, and different degrees of digestive tract symptoms such as nausea, vomiting and diarrhea appeared between 6 and 36 h. The biochemical indexes of alanine aminotransferase, aspartate aminotransferase, total bilirubin, lactate dehydrogenase, myoglobin, creatine kinase isoenzyme, blood urea nitrogen and creatinine increased significantly at 52 h after exposure, and the differences were statistically significant compared with 0 h ( P<0.05). The bleeding of liver and heart was obvious under macroscopic and microscopic observation, hepatocyte necrosis, renal tubule epithelial cell swelling. Conclusion:Large dose of amanita exitialis can cause acute liver failure of Banna miniature pigs, which is in line with the pathophysiological characteristics of acute liver failure, and lays a foundation for further research on the toxic mechanism and detoxification drugs of amanita exitialis induced liver failure.