清燥救肺汤对肺癌磷酸戊糖能量代谢途径的关键酶G6PD活性及其调控因子的影响

目的:观察清燥救肺汤对肺癌磷酸戊糖能量代谢途径6-磷酸葡萄糖脱氢酶(G6PD)活性及其调控因子的影响,探讨其机制。方法:50只雄性C57BL6J小鼠,通过随机分组,分为模型组、环磷酰胺组、清燥救肺汤高、中、低剂量组,每组10只。右腋下注射Lewis肺癌细胞建立肺癌荷瘤模型,清燥救肺汤高、中、低剂量组分别以11,5.5,2.8 g·kg^-1·d^-1造模前2周开始灌胃给药,环磷酰胺组以50 mg·kg^-1·(2 d)-1腹腔注射给药,模型组以等体积生理盐水灌胃给药,接种后继续给药2周后处死各组小鼠并取瘤组织,酶联免疫吸附测定(ELISA)检测G6PD活性及小鼠活性氧(ROS)含量;实时荧光定量聚合酶链式反应(Real-time PCR)检测癌组织中还原型烟酰胺腺嘌呤二核苷酸磷酸(NADPH)氧化酶亚基单位gp91phox和p22phox mRNA的表达。结果:与模型组比较,清燥救肺汤高、中、低剂量组及环磷酰胺组G6PD活性明显降低(P<0.05,P<0.01);清燥救肺汤高、中、低剂量组及环磷酰胺组ROS含量,NADPH氧化酶亚基单位gp91phox,p22phox mRNA表达显著降低(P<0.01)。结论:清燥救肺汤可能通过抑制NADPH氧化酶表达,减少ROS含量,抑制G6PD的表达,发挥抑制肺癌细胞能量代谢及细胞增殖的功效。

Danshen(Radix Salviae Miltiorrhizae)reverses renal injury induced by myocardial infarction

OBJECTIVE:To evaluate the protection of Danshen{Radix Salviae Miltiorrhizae)(SM) injection in myocardial infarction(Ml) induced renal damage.METHODS:Forty male C57 mice were divided into control group,Ml group and SM group.In Ml group,the left coronary artery was occluded for 8weeks;the same procedure was used for the SM group,with the additional step of SM(0.2 mL) administered intraperitoneally for 56 days.Before surgery and 8 weeks later,transthoracic echocardiography was performed and urine protein and albumin was measured.At the end of the time,all mice were killed and kidneys removed for reactive oxygen species(ROS) and fibrosis analysis,plasma was collected for blood urea nitrogen and serum creatinine determination.RESULTS:Ml slightly decreased renal function and increased production of ROS,accompanied with renal fibrosis.Administration of SM reduced production of ROS and increased renal function,it also reduced renal fibrosis.CONCLUSION:Ml plays a causal role in renal injury and SM exerts renal-protective effects,probably by its antioxidant activities.

Effect of Zibushenjing Fang on skeletal development and brain tissue antioxidation in mice with kidney essence insufficiency: a mechanistic study

OBJECTIVE: To investigate the effects of Zibushenjing Fang (formula for tonifying the kidney essence) on skeletal development and brain tissue antioxidation in mice with kidney essence insufficiency. METHODS: Fifty male Kunming mice were randomly divided into five groups: normal group, model group, Jinkuishenqi Wan group, Zibushenjing Fang high dose group, and Zibushenjing Fang low dose group, with 10 mice in each group. The model of kidney essence insufficiency syndrome was established in all the mice except the normal group by using a cat to threaten the mice and by swimming until exhaustion daily which lasted about 21 days. Mice in the model group were administered 20 mL/ kg -1 · d -1 of normal saline intragastrically. The Jinkuishenqi Wan group was given 2.7 g/kg-1 · d-1 ofa solution of Jinkuishenqi Wan. The Zibushenjing Fang high dose group was given 20 g/kg -1 · d -1 and the Zibushenjing Fang low dose group was given 10 g/kg -1 · d -1 of a solution of Zibushenjing Fang.The general condition of all the groups was observed, including the quantity of food and water intake, swimming time, length of femur, and weight of the femur and musculus quadriceps femoris. The total superoxide dismutase (T-SOD), glutathione peroxi- dase (GSH-Px), and methane dicarboxylic aldehyde (MDA) activities in the brain tissues were detected. RESULTS: Zibushenjing Fang could improve the manifestation of kidney essence insufficiency, increase the quantity of food and water intake, swimming time, femur length, and femur and musculus quadriceps femoris weight. It could also regulate the activities of T-SOD, GSH-Px, and MDA in brain tissue. CONCLUSION: Zibushenjing Fang may play an important role in treating kidney essence insufficiency syndrome by promoting body development and improving brain tissue antioxidation.