目的观察羧甲司坦对慢性气道炎症大鼠肺组织中磷脂酰肌醇-3-激酶(PI3K)/蛋白激酶B(AKT)和γ-谷氨酰半胱氨酸合酶(γ-GCS)表达的影响。方法将30只健康雄性SD大鼠随机分为对照组、模型组和羧甲司坦治疗组。模型组及羧甲司坦治疗组大鼠用...目的观察羧甲司坦对慢性气道炎症大鼠肺组织中磷脂酰肌醇-3-激酶(PI3K)/蛋白激酶B(AKT)和γ-谷氨酰半胱氨酸合酶(γ-GCS)表达的影响。方法将30只健康雄性SD大鼠随机分为对照组、模型组和羧甲司坦治疗组。模型组及羧甲司坦治疗组大鼠用气管内注入脂多糖和熏香烟法制成慢性气道炎症大鼠模型,羧甲司坦治疗组大鼠在第17~30天吸烟前30min给予羧甲司坦(500mg/kg)灌胃。计数各组大鼠支气管肺泡灌洗液(BALF)细胞,观察肺组织的病理变化;用免疫组织化学检测肺组织γ-GCS及磷酸化AKT(p-AKT)的表达水平;用逆转录聚合酶链反应(RT-PCR)检测PI3 K mRNA、γ-GCS mRNA的表达。结果与模型组比较,羧甲司坦治疗组大鼠支气管、肺组织中炎症浸润及BALF中中性粒细胞数明显降低(P<0.05),p-AKT蛋白、γ-GCS蛋白、PI3 K mRNA及γ-GCS mRNA的表达明显降低(P<0.05),谷胱甘肽(GSH)、活性氧(ROS)含量明显减少,总抗氧化能力明显上升(P<0.05)。结论羧甲司坦可能通过PI3K/AKT通路促进γ-GCS蛋白的表达,减轻被动吸烟大鼠肺部的炎症和氧化应激。展开更多
The interaction between amino acid drugs, aminobutyric acid, carbocisteine and levodopa, with chloranil was studied spectrophotometrically. The conditions were investigated and optimized. The interaction obeyed Beer'...The interaction between amino acid drugs, aminobutyric acid, carbocisteine and levodopa, with chloranil was studied spectrophotometrically. The conditions were investigated and optimized. The interaction obeyed Beer's law over the range of 0.2-8.7, 1.2-20 and 2-26.4 μg/mL for aminobutyric acid, carbocisteine and levodopa, respectively. The validity was compared with that by the official methods^1,3,5 and the recovery studies of standard addition method, the result is satisfactory. The proposed method has been successfully applied to the determination of the above drugs in tablets.展开更多
文摘目的观察羧甲司坦对慢性气道炎症大鼠肺组织中磷脂酰肌醇-3-激酶(PI3K)/蛋白激酶B(AKT)和γ-谷氨酰半胱氨酸合酶(γ-GCS)表达的影响。方法将30只健康雄性SD大鼠随机分为对照组、模型组和羧甲司坦治疗组。模型组及羧甲司坦治疗组大鼠用气管内注入脂多糖和熏香烟法制成慢性气道炎症大鼠模型,羧甲司坦治疗组大鼠在第17~30天吸烟前30min给予羧甲司坦(500mg/kg)灌胃。计数各组大鼠支气管肺泡灌洗液(BALF)细胞,观察肺组织的病理变化;用免疫组织化学检测肺组织γ-GCS及磷酸化AKT(p-AKT)的表达水平;用逆转录聚合酶链反应(RT-PCR)检测PI3 K mRNA、γ-GCS mRNA的表达。结果与模型组比较,羧甲司坦治疗组大鼠支气管、肺组织中炎症浸润及BALF中中性粒细胞数明显降低(P<0.05),p-AKT蛋白、γ-GCS蛋白、PI3 K mRNA及γ-GCS mRNA的表达明显降低(P<0.05),谷胱甘肽(GSH)、活性氧(ROS)含量明显减少,总抗氧化能力明显上升(P<0.05)。结论羧甲司坦可能通过PI3K/AKT通路促进γ-GCS蛋白的表达,减轻被动吸烟大鼠肺部的炎症和氧化应激。
文摘The interaction between amino acid drugs, aminobutyric acid, carbocisteine and levodopa, with chloranil was studied spectrophotometrically. The conditions were investigated and optimized. The interaction obeyed Beer's law over the range of 0.2-8.7, 1.2-20 and 2-26.4 μg/mL for aminobutyric acid, carbocisteine and levodopa, respectively. The validity was compared with that by the official methods^1,3,5 and the recovery studies of standard addition method, the result is satisfactory. The proposed method has been successfully applied to the determination of the above drugs in tablets.