Effect of Radix Paeoniae Rubra on the expression of HO-1 and iHOS in rats with endotoxin-induced acute lung injury

Objective ： To investigate the effect of Radix Paeoniae Rubra （RPR） on the expression of heme oxygenase （ HO- 1 ） and induced nitric oxide synthase （ iNOS ） in endotoxin- induced acute lung injury in rats and its protective mechanism. Methods： Forty Wistar rats were divided randomly into 5 groups with 8 rats in each group： saline control group （NS group ）, lipopolysaccharide group （LPS group）, RPR-treatment group, RPR-prevention group and Hemin group. The effect of RPR on protein content, the ratio of neutrophiles in bronchoalveolar lavage fluid, malondialdehyde （MDA） content in the lung and the activity of serum NO were observed. Arterial blood was drawn for blood-gas analysis. The expression of HO-1 and iNOS in lung tissues was detected by immunohistochemitry and morphometry computer image analysis. The histological changes of the lung were observed under fight microscope. Results： Compared with that in NS group, the expression of HO-1 and iNOS was markedly increased in LPS group （P 〈0.01）. In RPR-treatment, RPR-prevention, and Hemin groups, the expression of iNOS was significantly lower, while the expression of HO-1 was higher than that in LPS group （P〈0.05）. The protein content, the ratio of neutrophiles in bronchouiveolar lavage fluid, the content of MDA and the activity of serum NO in LPS group were significantly higher than those in NS group （ P〈0.01 ）. There was a significant decrease in the level of arterial bicarbonate and partial pressure of oxygen in the LPS group （P 〈0.01）; these parameters of lung injury however, were significantly lower in RPR-treatment, RPR- prevention, and Heroin groups than LPS group （P〈0.05 or P〈0.01 ）. The pathologic changes of lung tissues were substantially attenuated in RPR-treatment, RPR- prevention, and Hemin groups than LPS group. Conclusions ： The high expression of HO-1 reflects an important protective function of the body during lipopolysaccharide-induced acute lung injury. The acute lung injury is related to the inhibition of iNOS expression and the induction of HO-1 expression.     

戟叶鼠尾草的生药学研究

目的：对戟叶鼠尾草（Salvia bulleyana Diela）进行系统的生药学研究。方法：采用来源鉴定、性状鉴定，显微及理化鉴定的方法。结果：详细描述了戟叶鼠尾草的生药性状、横切面构造、粉末及理化鉴别的特征。结论：所得结果可以为该生药的鉴定、质量标准的制定及戟叶鼠尾草进一步开发利用提供科学依据。     

Effect of Radix Paeoniae Rubra on the expression of HO-1 and iNOS in rats with endotoxin-induced acute lung injury

Objective: To investigate the effect of Radix Paeoniae Rubra (RPR) on the expression of heme oxygenase (HO-1) and induced nitric oxide synthase (iNOS) in endotoxin-induced acute lung injury in rats and its protective mechanism. Methods: Forty Wistar rats were divided randomly into 5 groups with 8 rats in each group: saline control group (NS group), lipopolysaccharide group ( LPS group), RPR-treatment group, RPR-prevention group and Hemin group. The effect of RPR on protein content, the ratio of neutrophiles in bronchoalveolar lavage fluid, malondialdehyde ( MDA ) content in the lung and the activity of serum NO were observed. Arterial blood was drawn for blood-gas analysis. The expression of HO-1 and iNOS in lung tissues was detected by immunohistochemitry and morphometry computer image analysis. The histological changes of the lung were observed under light microscope. Results: Compared with that in NS group, the expression of HO-1 and iNOS was markedly increased in LPS group (P<0.01). In RPR-treatment, RPR-prevention , and Hemin groups, the expression of iNOS was significantly lower, while the expression of HO-1 was higher than that in LPS group (P<0.05). The protein content, the ratio of neutrophiles in bronchoalveolar lavage fluid, the content of MDA and the activity of serum NO in LPS group were significantly higher than those in NS group (P<0.01). There was a significant decrease in the level of arterial bicarbonate and partial pressure of oxygen in the LPS group (P<0.01); these parameters of lung injury however, were significantly lower in RPR-treatment. RPR-prevention, and Hemin groups than LPS group (P<0. 05 or P< 0.01). The pathologic changes of lung tissues were substantially attenuated in RPR-treatment, RPR-prevention, and Hemin groups than LPS group. Conclusions: The high expression of HO-1 reflects an important protective function of the body during lipopolysaccharide-induced acute lung injury. The protective effect of RPR on lipopolysaccharide-induced acute lung injury is related to the inhibition of iNOS expression and the induction of HO-1 expression.     

赤芍对内毒素性急性肺损伤大鼠肺诱导型血红素氧化酶和诱导型一氧化氮合酶表达的影响

目的观察赤芍对内毒素（LPS）性急性肺损伤（ALI）时肺诱导型血红素氧化酶（HO-1）和诱导型一氧化氮合酶（iNOS）表达的影响，探讨其保护作用及分子机制。方法40只Wistar大鼠随机分为对照组、内毒素组（LPS组）、赤芍治疗组、赤芍预防组和血晶素组，每组8只。采用大鼠内毒素ALI模型，于LPS滴注后6h取动脉血行血气分析，测定肺组织中HO-1和iNOS的表达，肺泡灌洗液中性粒细胞比、蛋白含量，血清一氧化氮（NO）及肺组织丙二醛（MDA）含量，同时观察肺组织病理形态学改变。结果与对照组比较，LPS组HO-1和iNOS表达显著增强（P〈0．01），肺泡灌洗液中性粒细胞比、蛋白含量、肺组织MDA和血清NO显著增加，而PaO2和HCO3^-明显降低（P〈0．01）；与LPS组比较，赤芍治疗组、赤芍预防组和血晶素组HO-1表达明显升高，而iNOS表达明显降低（P〈0．05），病理学检查显示肺组织损伤程度较LPS组明显减轻。结论肺组织HO-1表达增强是内毒素性ALI的重要应激保护机制，赤芍对内毒素性ALI的防治作用可能与诱导HO-1的表达和抑制肺组织iNOS异常高表达有关。     

92洗涤消毒剂与洁灭净对常见病原菌杀灭效果的观察

市面上销售的“92洗涤消毒剂”与“洁灭净”（SDe洗消剂）为两种新型消毒剂。为了确保医疗卫生工作中消毒灭菌的质量,作者用以上两种消毒剂对常见病原菌杀灭效果进行了试验性观察。现将观察结果报告如下。l方法11试验菌与菌液的制备试验菌为鼠伤寒沙门氏菌（同济医大微生物学教研室提供）、大肠杆菌（ATCC25922）、痢疾杆菌与金黄色葡萄球菌（本室分离保存）。取上述菌种转种至琼脂斜面培养基培养24小时后,用含0．03M的磷酸盐缓冲液洗下新鲜培养物,并稀释成含菌量为106—10’cfU／nd的菌悬液。1．2消毒剂及其稀释浓度92洗涤消毒剂与…