中药复方对免疫损伤性肝纤维化大鼠肝损害的疗效观察

目的:研究中药复方方剂对免疫损伤性肝纤维化大鼠肝损害的治疗作用.方法:给大鼠腹腔注射猪血清,制备肝纤维化模型,以低剂量、高剂量中药复方颗粒治疗,测定治疗前后的ALT、A、G、A/G和PT,结合肝组织切片及细胞化学染色观察判断疗效.结果:与正常对照组比较,模型组ALT显著升高(P<0.001),A/G比值显著低于正常组(P<0.05);血浆凝血酶原时间(PT)明显延长(P<0.0005);肝纤维化明显;胶原纤维密度、巨噬细胞和储脂细胞显著高于正常组(P<0.05).治疗组一般状态良好,高、低剂量治疗组ALT(0.01相似文献   

川芎嗪治疗实验性肾损伤机理的研究

目的:观察川芎嗪治疗实验性免疫性肾损伤作用和机理,为中药治疗肾小球肾炎开辟新途径。方法:猪血清腹腔注射8周,复制大鼠实验性肾损伤模型,川芎嗪治疗4周后处死动物,检测尿蛋白、血清BUN和Scr含量,取肾组织制作光、电镜标本检查。结果:川芎嗪大、小剂量组尿蛋白、血清BUN和Scr含量较模型组明显降低(P<0.01),肾小球的病理形态学改变较模型组轻。结论:川芎嗪具有治疗大鼠实验性免疫性肾损伤的作用。     

风药对肝郁脾虚型UC大鼠免疫功能及氧化应激水平的影响

目的:观察风药对肝郁脾虚型溃疡性结肠炎(UC)大鼠免疫功能紊乱及氧化应激水平的影响.方法:选用W istar大鼠,按照随机数字表法分为空白对照组、模型组、痛泻要方加风药组、痛泻要方组、痛泻要方去风药组,每组10只,采用病证结合法复制U C大鼠模型后,分别给予痛泻要方加风药、痛泻要方、痛泻要方祛风药灌胃治疗,模型对照组和正常对照组给予生理盐水,4周后,检测各组血清T NF-α、IL-2含量,结肠黏膜C AT活性、MDA含量的变化.结果:与空白组对照比较,模型组大鼠血清T NF-α和结肠黏膜MDA显著升高(P<0.01),血清IL-2含量和结肠黏膜C AT活性显著降低(P<0.01);经药物灌胃治疗后与模型组比较,痛泻要方加风药、痛泻要方和痛泻要方去风药组大鼠血清T NF-α和结肠黏膜MDA含量下降,血清I L-2含量和结肠黏膜CAT活性升高、其中尤以痛泻要方加风药组有显著差异(P<0.01,P<0.05).结论:风药对U C模型大鼠有一定的治疗作用,其可能机制与调节免疫和清除氧自由基有关.     

桂枝汤对动脉粥样硬化大鼠血管活性物质的影响

目的:研究桂枝汤对长期高脂饲料喂养引起的大鼠动脉粥样硬化模型血脂和血管内皮活性因子的作用.方法:48只大鼠随机分为5组:正常组(普通饲料),n=8;模型组(高脂饲料喂养复制大鼠动脉粥样硬化模型),n=10;阳性对照组(模型组加辛伐他汀灌胃),n=10;桂枝汤低浓度组(模型组加桂枝汤10g/(kg·d)灌胃),n=10;桂枝汤高浓度组(模型组加桂枝汤20g/(kg·d)灌胃),n=10.喂养14周用光镜观察动脉斑块形成后检测各组血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-C)、低密度脂蛋白胆固醇(LDL-C),放免法测定血浆内皮素(ET)和血管紧张素Ⅱ(AngⅡ)含量.结果:桂枝汤持续治疗6周后,相对于模型组,血清TG、TC、LDL-C浓度降低(P<0.01),HDL-C浓度升高(P<0.01),ET和AngⅡ含量降低(P<0.01).结论:桂枝汤可降低血脂和血管内皮活性因子,保护血管内皮,改善血管内皮功能.     

山药多糖对糖尿病大鼠胰岛素及血小板数的影响

目的:观察山药多糖对四氧嘧啶诱导的糖尿病大鼠胰岛素以及血小板数的影响.方法:将四氧嘧啶糖尿病大鼠分成正常大鼠对照组、糖尿病模型对照组及治疗组,其中治疗组包括二甲双胍组和山药多糖小、中、大三个剂量组,二甲双胍组大鼠每日每只灌服二甲双胍剂量为0.8mg/kg,山药多糖小、中、大剂量组大鼠每日每只分别灌服50mg/kg、75mg/kg、100mg/kg的山药多糖精品.正常大鼠对照组、糖尿病模型大鼠对照组每日每只灌服等体积的生理盐水.灌服15d后进入实验程序的大鼠进行血糖测量.结果:与正常对照组比较,模型对照组大鼠血清胰岛素水平显著降低(P<0.01);山药多糖各剂量组的胰岛素水平无明显变化;与二甲双胍组比较,山药多糖各组胰岛素水平明显增高.山药多糖三个剂量组的血小板数与模型对照组比较有显著差异(P<0.01),与正常对照组比较无明显差异(P>0.05).结论:山药多糖对糖尿病大鼠的胰岛功能具有保护作用,能抑制血小板的异常激活和聚集.     

白术水提物对血管性痴呆大鼠学习记忆及皮层SOD、MDA含量的影响

观察白术水提物(Water extract of atractylodis macrocephala,WEA)对血管性痴呆(vascular dementia,VD)大鼠学习记忆障碍的改善作用,初步探讨其药理作用机制。32只健康成年雄性SD大鼠随机分为四组:假手术组、模型组、WEA低剂量组、WEA高剂量组,每组8只。除假手术组外,其余各组大鼠均采用双侧颈总动脉永久阻断法(2-VO)建立血管性痴呆动物模型,14天后,Morris水迷宫实验检测大鼠学习记忆能力,同时测定皮层SOD和MDA含量。结果表明:与假手术组相比,模型组大鼠逃避潜伏期明显延长(P<0.01),在原平台象限停留时间明显缩短(P<0.01),皮层SOD含量明显减少(P<0.01),MDA含量明显增多(P<0.01)。与模型组比较,WEA高剂量组和低剂量组大鼠逃避潜伏期明显缩短(P<0.01),在原平台象限停留时间明显延长(P<0.01,P<0.05),皮层SOD含量显著增多(P<0.05),MDA含量无明显变化。结果提示WEA对VD大鼠学习记忆障碍具有显著改善作用,机制可能与其提高脑组织抗氧化能力有关。     

参麦注射液对大鼠缺血再灌注心肌CaN活性的影响

目的:观察大鼠心肌缺血再灌注损伤(MIRI)中钙调神经磷酸酶(CaN)活性的变化,以及参麦注射液(SMI)对其的影响.方法:24只大鼠随机分为3组(n=8):假手术组、心肌缺血再灌注模型组和参麦注射液治疗组,检测各组在缺血30min,再灌注2h后心肌CaN的变化.结果:模型组大鼠与假手术组相比,心肌CaN 活性明显升高(P<0.01);与模型组相比,参麦治疗组大鼠心肌CaN 活性明显降低(P<0.01).结论:参麦注射液可以抑制大鼠心肌的CaN 活性,从而对缺血再灌注心肌起到保护作用.     

复心汤对大鼠急性心肌缺血及左室舒张功能的保护作用

目的:本实验观察复心汤灌胃对大鼠心肌缺血模型的影响.方法:Wistar大鼠60只,雌雄各半,随机分成6组,每组10只.正常对照组:生理盐水灌胃;模型组:生理盐水灌胃;地奥心血康组:等效剂量地奥心血康灌胃(0.12g/kg/d);复心汤高剂量组:6倍等效剂量灌胃(81g/kg/d);复心汤中剂量组:3倍等效剂量灌胃(40.5g/kg/d);复心汤低剂量组:等效剂量灌胃(13.5g/kg/d).每日早晚各一次,连续7天.第8天除正常对照组外,其余各组于给药1小时后,用垂体后叶素(Pituitrinum,pit)制备心肌缺血模型.观察大鼠的心电图(ECG)、心肌组织乳酸脱氢酶(LDH)和肌酸激酶(CK)含量的改变、左室压力下降最大速率(?dp/dtmax)、左室舒张末压(LVEDP)的变化.结果:与模型组比较,复心汤各剂量组和地奥心血康组表现出显著对抗作用(P<0.05,P<0.01).与正常组比较,模型组大鼠CK及LDH活力显著升高,具有极显著性差异(P<0.001).结论:复心汤有治疗和预防心肌缺血的作用,对于心脏舒张功能的防治亦有明显的作用.     

链脲菌素诱导糖尿病性勃起功能障碍大鼠模型的建立

目的:通过腹腔注射链脲菌素制备糖尿病性(diabetes mellitus,DM)勃起功能障碍(erectile dysfunction,ED)大鼠模型,为研究糖尿病性ED提供实验动物模型.方法:Wistar大鼠120只,随机分为Ⅰ、Ⅱ、Ⅲ三组,每组分再为糖尿病组(DM)20只,对照组(NDM)20只,DM组腹腔注射链脲菌素(streptozotocin,STZ,60mg/kg体重)建立DM动物模型后,注射阿朴吗啡(apomorphine,APO,80μg/kg)观察8周、12周及16周组大鼠阴茎勃起情况,制备DM性ED大鼠模型.结果:DM组大鼠成模49只,8、12、16周分别为17只、17只、15只,注射阿朴吗啡后勃起次数分别为(1.0±0.0)、(1.0±0.0)、(1.0±0.0),勃起率分别为35.3%、23.5%、13.3%,ED发生率分别为64.7%、76.5%、86.7%;NDM组60只,勃起次数分别为(2.2±0.8)、(2.3±0.8)、(2.0±0.7),勃起率均为100%,ED发生率为0.两组相比差异有统计学意义(P＜0.01).结论:链脲菌素诱导糖尿病性ED大鼠模型方法可行、可靠.     

运动通过Akt/GSK-3β信号通路改善大鼠糖尿病心肌病

背景:运动预防糖尿病心肌病(DCM)的机制还不明确.目的:探讨运动对糖尿病大鼠心功能障碍、纤维化、炎症和相关信号通路的影响.方法:腹膜内注射链脲霉素建立大鼠糖尿病模型.大鼠随机分为3组(n=16):健康坐式对照组(SC);坐式糖尿病对照组(SD)和运动+糖尿病组(ED).运动组大鼠在跑台上进行每天1小时运动,速度为27 m/min,坡度为6°,每周5天,共12周.测定糖化血红蛋白、肌酸激酶同工酶、血浆脑钠素、心肌胶原含量分数和左室质量指数.结果:与SC组比较,SD组大鼠BNP、CK-MB、TGF-β1和CTGF mRNA和蛋白表达、LVWI和CVF显著增加(P<0.05),同时Akt和GSK-β3磷酸化降低(P<0.05).结论:结果表明运动对DCM治疗的机制可能是通过Akt/GSK-3β信号通路.     

卡思卡特城堡

It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,     

不同的吃喝玩乐

一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/     

漏洞百出的教育

Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?     

只要努力,不要后悔

There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.     

浅谈移民问题

Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject.     

Sister Carrie, an Adherent of Desires

Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities.     

Improvement of one-cycle controller by use of proportional integral differential controller

1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec…     

库克斯顿城堡

城堡, 是欧洲典型的建筑之一, 每个城堡都有一个美丽的传说或是一段历史。从本期开始, 我们将推出“城堡之旅”, 带各位读者去浏览、观赏欧洲各地的城堡, 开始一段文化与历史的旅途!     

胡主席在印度,我却在中国

Today, Sunday morning, I sit thinking and typing at my computer. My thoughts are in my homeland, India and my body is in China. The body is here and mind there for a good reason. Mr. Hu is president and I am resident and both are in each other's countries (what a difference the absence of one small letter makes!). Mr. Hu will return in a few days and I will stay on longer.