A rat model was used to explore the therapeutic effects of ginsenosides (GS)on smoke inhalation long injury.It was found that GS could markedly alleviate the in-crease of pulmonary microvascular permeability (PMVP),re...A rat model was used to explore the therapeutic effects of ginsenosides (GS)on smoke inhalation long injury.It was found that GS could markedly alleviate the in-crease of pulmonary microvascular permeability (PMVP),reduction of protein and leu-cocyte content in the bronchoalveolar lavage fluid (BALF) of the smoke inhalation injur-ed rats.Histopathological studies of the lungs revealed that GS could distinctly reduceleucocyte accumulation in the vessels,interstitial infiltration of leucocytes,interstitial andintra-alveolar edema,hemorrhage and vascular congestion.Meanwhile,GS could inhibitthe elevation of malondialdehyde (MDA) in the lungs and serum and reverse the decrea-sed activity of superoxide dismutase (SOD) in the lungs after smoke inhalation.In addi-tion experiments in vitro also showed the inhibition of lipid peroxidation in lung homo-genate and elimination of superoxide anions hydroxyl radicals effectively by GS in properdoses.These results imply that there is close interrelationship between the therapeuticefficiency of GS on smoke inhalation lung injury and its capability of antioxidation.展开更多
文摘目的:观察椒目油(zanthoxylum seed oil,ZSO)对支气管哮喘大鼠肺组织Fas/FasL表达水平和肺血管通透性的影响,为临床应用椒目油治疗哮喘提供实验证据和理论支持。方法:将雄性SD大鼠80只随机分为正常对照组、哮喘模型组、地塞米松治疗组和椒目油治疗组,每组各20只。以卵白蛋白(ovalbumin,OVA)腹腔注射致敏和雾化吸入激发建立哮喘大鼠模型,以免疫组化ABC法检测肺组织中Fas/FasL蛋白的表达,伊文思蓝(evans blue dye,EBD)分光光度法检测肺血管通透性。结果:椒目油和地塞米松均能增强哮喘大鼠肺组织淋巴细胞表面Fas/FasL的蛋白表达;与哮喘模型组相比较,有统计学意义(P<0.05)。哮喘模型组大鼠肺内EBD浓度显著高于对照组(P<0.01),而与哮喘组相比,椒目油和地塞米松均能显著缓解EBD的升高(P<0.01)。结论:椒目油可有效降低哮喘大鼠肺血管通透性,可能通过增强Fas/FasL蛋白表达而促进炎症局部淋巴细胞凋亡减轻哮喘气道炎症反应。
文摘A rat model was used to explore the therapeutic effects of ginsenosides (GS)on smoke inhalation long injury.It was found that GS could markedly alleviate the in-crease of pulmonary microvascular permeability (PMVP),reduction of protein and leu-cocyte content in the bronchoalveolar lavage fluid (BALF) of the smoke inhalation injur-ed rats.Histopathological studies of the lungs revealed that GS could distinctly reduceleucocyte accumulation in the vessels,interstitial infiltration of leucocytes,interstitial andintra-alveolar edema,hemorrhage and vascular congestion.Meanwhile,GS could inhibitthe elevation of malondialdehyde (MDA) in the lungs and serum and reverse the decrea-sed activity of superoxide dismutase (SOD) in the lungs after smoke inhalation.In addi-tion experiments in vitro also showed the inhibition of lipid peroxidation in lung homo-genate and elimination of superoxide anions hydroxyl radicals effectively by GS in properdoses.These results imply that there is close interrelationship between the therapeuticefficiency of GS on smoke inhalation lung injury and its capability of antioxidation.
