加减四逆散对慢性心理应激大鼠胸腺糖皮质激素受体作用的研究

目的：观察加减四逆散对慢性心理应激大鼠胸腺细胞糖皮质激素受体作用的影响。方法：将大鼠随机分为正常对照组（C）、模型组（M）、加减四逆散组（C1）、人参皂甙组（C2）。电子天平称重并计算大鼠胸腺重量指数，采用放射免疫方法检测大鼠胸腺细胞糖皮质激素受体的数目、核转移率。结果：与C组比较，M组胸腺重量指数显著下降，糖皮质激素受体（glucocorticoid receptor,GCR)的数目略有上升的趋势，胸腺糖皮质激素受体的核转移率显著上升（P＜0.01)。与M组相比，C1组与C2组的大鼠胸腺细胞糖皮质激素受体复合物的核转移率均显著降低，胸腺重量指数显著提高（P＜0.01或P＜0.05)。在受体核转移率下降方面，C1组优于C2组（P＜0.05)。此外，C1组各项数据与C组比较无统计学差异。结论：加减四逆散能显著减轻糖皮质激素对胸腺的抑制作用。其作用途径可能是通过抑制慢性心理应激大鼠GCR由胸腺细胞胞浆向胞核转位来实现的。     

缺血预处理-后处理对大鼠肠缺血再灌注损伤的影响

Objective To evaluate the effects of ischemic preconditioning-postconditioning on the intestinal ischemia-reperfusion (IR) injury in rats. Methods Forty healthy male SD weighing 225-275 g were randomly assigned into 5 groups ( n = 8 each): group I sham operation (group S) ; group II intestinal IR (group IIR); group Ⅲ ischemic preconditioning (group Ipr); group IV ischemic postconditioning (group Ipo); group V Ipr+ Ipo. The rats were anesthetized with intraperitonel 20% urethane 5 ml/kg. Superior mesenteric artery (SMA) was occluded for 60 min followed by 60 min reperfusion. In group S, SMA was isolated but not occluded. In group Ipr, SMA was occluded for 10 min followed by 10 min reperfusion, and the rest procedures were performed using the method described in group IIR. In group Ipo, 60 min ischemia was followed by three 30 s episodes of ischemia at 30 s intervals for reperfusion. In group Ipr+ Ipo, Ipr was performed followed by Ipo and the procedures were performed using the methods described in group Ipr and Ipo. The animals were killed at 60 min of reperfusion. The intestinal tissues were immediately removed for determination of MDA content, SOD and MPO activities and the degree of damage to intestinal mucous membrane was scored according to Chiu score. Arterial blood samples were taken for determination of plasma concentrations of TNF-α and 1L-6. Results Compared with group S, Chiu score, MDA content, MPO activity, and plasma concentrations of TNF-α and IL-6 were significantly increased, whereas SOD activity decreased in the other 4 groups ( P < 0.05). Chiu score, MDA content, MPO activity, and plasma concentrations of TNF-α and IL-6 were significantly decreased, whereas SOD activity increased in group Ipr, Ipo and Ipr + Ipo as compared with group IIR ( P < 0.05). Chiu score and MDA content were significantly lower, whereas SOD activity higher in group Ipr + Ipo than in group Ipr and Ipo ( P < 0.05). No significant differences were detected in the indices between group Ipr and group Ipo ( P > 0.05). Conclusion Ischemic preconditioning-postconditioning can attenuate the intestinal IR injury in rats, and the efficacy is better than that of either Ipr or Ipo alone.     

缺血预处理-后处理对大鼠肠缺血再灌注损伤的影响

Objective To evaluate the effects of ischemic preconditioning-postconditioning on the intestinal ischemia-reperfusion (IR) injury in rats. Methods Forty healthy male SD weighing 225-275 g were randomly assigned into 5 groups ( n = 8 each): group I sham operation (group S) ; group II intestinal IR (group IIR); group Ⅲ ischemic preconditioning (group Ipr); group IV ischemic postconditioning (group Ipo); group V Ipr+ Ipo. The rats were anesthetized with intraperitonel 20% urethane 5 ml/kg. Superior mesenteric artery (SMA) was occluded for 60 min followed by 60 min reperfusion. In group S, SMA was isolated but not occluded. In group Ipr, SMA was occluded for 10 min followed by 10 min reperfusion, and the rest procedures were performed using the method described in group IIR. In group Ipo, 60 min ischemia was followed by three 30 s episodes of ischemia at 30 s intervals for reperfusion. In group Ipr+ Ipo, Ipr was performed followed by Ipo and the procedures were performed using the methods described in group Ipr and Ipo. The animals were killed at 60 min of reperfusion. The intestinal tissues were immediately removed for determination of MDA content, SOD and MPO activities and the degree of damage to intestinal mucous membrane was scored according to Chiu score. Arterial blood samples were taken for determination of plasma concentrations of TNF-α and 1L-6. Results Compared with group S, Chiu score, MDA content, MPO activity, and plasma concentrations of TNF-α and IL-6 were significantly increased, whereas SOD activity decreased in the other 4 groups ( P < 0.05). Chiu score, MDA content, MPO activity, and plasma concentrations of TNF-α and IL-6 were significantly decreased, whereas SOD activity increased in group Ipr, Ipo and Ipr + Ipo as compared with group IIR ( P < 0.05). Chiu score and MDA content were significantly lower, whereas SOD activity higher in group Ipr + Ipo than in group Ipr and Ipo ( P < 0.05). No significant differences were detected in the indices between group Ipr and group Ipo ( P > 0.05). Conclusion Ischemic preconditioning-postconditioning can attenuate the intestinal IR injury in rats, and the efficacy is better than that of either Ipr or Ipo alone.     

少阴寒化证与冠心病心肌缺血相关性探讨

从病机、症状、临床、实验等方面探讨了《伤寒论》中少阴寒化证与冠心病心肌缺血的关系， 认为两者之间具有密切的相关性， 为中医学认识冠心病心肌缺血及筛选有效治疗方药提供了一条新的思路     

娘，我晨跑来啦

儿子住在东郊，娘住在西郊，一条路纽带似的牵着两地，长约五公里。 人到中年，这器官那器官免不了有些毛病。医生说儿子坐着的时间太长，建议他坚持锻炼，又举了很多锻炼已晚后悔不已的例子。他想也是，开不完的会，陪不完的酒，再不锻炼后果不堪设想。     

HD02对慢性前脑缺血大鼠神经细胞凋亡的影响

目的:研究HD02在大鼠慢性前脑缺血过程中对神经细胞凋亡的作用。方法:16～18个月SD大鼠64只,雄性,体质量300～350g。利用末端标记法和流式细胞仪,测定HD02干预前后脑缺血大鼠脑组织神经细胞的凋亡情况,并检测Caspase-3免疫阳性细胞、Calcineurin和钙激活中性蛋白酶(Calpain)活性。结果:HD02有减少阳性凋亡细胞出现率犤(5.40±1.38)%与模型对照组(12.72±3.45)%比较,t=4.84,P<0.01犦及减少Caspase-3免疫阳性细胞表达(HD02组比模型对照组:缺血15d:7.10±1.90比12.55±3.30,t=3.86,P<0.01;缺血30d:4.60±1.15比9.50±4.20,t=4.67,P<0.01),降低CalcineurinD02组比模型对照组:大脑皮质每克蛋白中含犤(38.24±5.58)比(48.98±5.04)nmol/s,t=3.64,P<0.01犦;海马每克蛋白中含犤(37.87±3.38)比(52.58±4.92)nmol/s,t=3.75,P<0.01犦和Calpain活性犤大脑皮质每毫克蛋白中含(2.96±0.77)比(4.56±0.85)A/h,t=3.84,P<0.05犦;海马每毫克蛋白中含犤(2.90±0.28)比(4.91±0.94)A/h,t=3.97,P<0.01犦的作用。结论:HD02有一定的抗神经细胞凋亡的作用。     

四逆汤抗血管内皮脂质过氧化损伤的作用机制研究

目的 比较四逆汤与抗氯化荆维生素E抗血管内皮脂质过氯化损伤作用。旨在探讨四逆汤防治冠心病的可能机制。方法 60例老年冠心病心绞痛患者。分别在常规西药异山梨酯的基础上。采用SPSS软件随机分为3组。四逆汤辨证和辨病组各20例、维生素E组20例。观察患者治疗前后血脂代谢及血管内皮功能氯化损伤指标（SOD活性、MDA含量、NO水平、ET浓度)的变化。结果 四逆汤能改善缺血ECG和临床症状。对部分血脂代谢指标血清总胆固醇(TC)、血清高密度脂蛋白胆固醇(LDL-C)及血清载脂蛋白A／血清载脂蛋白B(ApoA1／ApoB)有改善作用。辨证组与维生素E组差异有显著性意义(P&;lt;O．01)。四逆汤能显著升高血浆SOD活性和NO水平。降低MDA含量，ET-1浓度下降，与维生素E组比较．各项指标差异无显著性意义(P&;gt;O．05)。结论 四逆汤具有抗血管内皮功能氧化损伤及调节血管内皮细胞功能的作用，其效果与维生素E相似。调节血脂代谢、调节血管内皮细胞功能是四逆汤防治冠心病的可能机制。     

4-氨基-4-甲基哌啶二对甲苯磺酸盐的合成

目的 合成二肽基肽酶4抑制剂ABT-279和K-579的重要中间体4-氨基4-甲基哌啶二对甲苯磺酸盐.方法 以4-哌啶甲酸乙酯为原料,经N-Boc保护、烷基化、酰胺化、Hofmann降解和N-Boc脱保护5步反应,制备得4-氨基4-甲基哌啶二对甲苯磺酸盐.结果 4-哌啶甲酸乙酯为原料合成目标化合物的总收率为49.5%....     

大鼠肠缺血再灌注时肺组织β-防御素-2 mRNA表达的变化

目的 观察大鼠肠缺血再灌注时肺组织β-防御素-2(BD-2)mRNA表达的变化.方法 72只雄性SD大鼠随机分为2组(n=36):假手术组(S组)和肠缺血再灌注组(II/R组).采用夹闭肠系膜上动脉(SMA)的方法制备肠缺血再灌注模型.II/R组阻断SMA 1 h后再灌注,S组仅分离SMA.分别于再灌注即刻(T0),再灌注15(T1)、30(T2)、60 min(T3)、3 h(T4)和6 h(T5)时处死6只大鼠,取肺组织,光镜下观察肺组织病理学结果,计算肺通透性指数(PPI),检测肺组织肿瘤坏死因子-α(TNF-α)含量和BD-2 mRNA表达水平.结果 S组肺组织结构未见异常,II/R组出现肺水肿和中性粒细胞浸润.与S组比较,II/R组再灌注各时点PPI升高,BD-2 mRNA表达上调,T0-3时TNF-a含量升高(P＜0.05或0.01).II/R组BD-2 mRNA表达水平与TNF-a含量及PPI的相关系数分别为0.823和-0.615(P＜0.01).结论 大鼠肠缺血再灌注时肺组织BD-2基因表达上调.