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1.
综述牛蒡苷的药理活性研究进展。牛蒡苷是一种具有多种生物活性的二节基丁内酷木脂素类化合物,具有抗肿瘤、抗炎、抗氧化、抗糖尿病、抗流行性感冒、抗菌、神经保护等多种药理活性作用。  相似文献   
2.
目的:研究Survivin蛋白在人胃腺癌细胞系和组织中的表达及其临床意义。方法:用RT-PCR、Western Blot方法及免疫组织化学方法检测6株人胃腺癌细胞系,80例人胃腺癌及癌旁组织中Survivin基因的表达。结果:Survivin在6株人胃腺癌细胞系均有表达,胃腺癌组织中Survivin表达阳性率为60%,癌旁正常胃组织均无Survivin的表达;在胃腺癌中的表达与患者生存期和肿瘤的区域淋巴结转移(P<0.05)密切相关,与肿瘤分化程度无相关性(P>0.05)。结论:Survivin的变化与胃腺癌的发生和预后密切相关,并可能成为一个有希望的肿瘤治疗靶点。  相似文献   
3.
Objective To investigate the effects of limited resuscitation on hepatic ischernia-reperfusion in-jury in rots with hemorrhagic shock. Method Uncontrolled hemorrhagic shock was induced in 54 rats by transect-ing the middle branch of the splenic artery to produce standardized massive splenic injury. Resuscitation started when the mean arterial pressure (MAP) reached 40 mmHg. The rats were randomly divided (n = 9per group) in-to sham-operated group (SS), or one of five treatment groups in which infusion of Ringer' s solution was continually administrated to maintain MAP at 40 (RS40), 50 (RS50), 60 (RS60), 80 (RS80) or 100 mmHg (RS100) for 45 minutes (T45 point). After the bleeding was controlled, resuscitation was continued with Ringer's solution and whole blood (2:1) to increase the MAP to 100 mmHg for 120 minutes (T165 point), which was followed by obser-vation for 240 minutes (T405 point). All animals were observed for 240 minutes or until death. Blood specimens were collected at TO, T45, T165 and T405 for determination of blood lactate levels. At the end of the experiment,a small amount of hepatic tissue was collected to measure tissue blood perfusion, total antioxidative capacity (TAOC), Na+K+ ATPase activity and malondialdehyde (MDA) levels. Results At T405, the blood lactate lev-els in the RS80 and RS100 groups [(3.60±0.68) and (3.84 ± 1.09) mmol/L, respectively] were significantly higher than those in the SS, RS40, RS50 and RS60 groups [(2.00±0.66),(2.74±1.45),(2.43 +0.94) and (2.07±0.95) mmol/L, respectively;all:P < 0.05]. The MDA levels were significantly higher in the RS80 and RS100[(7.32±0.31) and (7.71±0.23) nmol/mg,respectively] than those in the SS, RS40, RS50 and RS60 groups[(4.95±0.80),(6.14±0.94),(6.42±0.48) and (6.84±0.36) nmol/mg, respeetively;all: P <0.05]. The Na+ K+ ATPase and TAOC levels were significantly lower in all of the RS groups than those in the SS group (all: P < 0.05), and those in the RS80 and RS100 groups was significantly lower than those in the RS40,RS50 and RS60 groups (all: P <0.05). Blood perfusion in the RS80 and RS100 groups was significantly lower than that in the other groups (all: P < 0.05). Conclusions If hemorrhage is uncontrolled, limited resuscitation appears to balance the needs for organ perfusion, improve the microcircttlation and decrease lactate levels. Fur-thermore, limited resuscitation could decrease ischemia-reperfusion injury in liver tissue.  相似文献   
4.
目的 探讨一种可评价具有携氧功能的抗休克液体的实验动物模型.方法 SD大鼠在麻醉状态下做35%、45%、55%和65%放血失血性休克模型,以乳酸林格液(LR)、全血进行复苏,观察其对失血性休克大鼠平均动脉血压(mean arterial blood pressure,MAP)、左心室收缩压(left intraventricular systolic pressure,LVSP)、左心室压力上升或下降的最大速率(the maximal change rate of left intraventricular pressure,±dp/dtmax)的影响,同时观察血气指标变化和存活率的变化.结果 35%失血性休克后,输注LR和全血均可使MAP恢复到90~100 mmHg水平,同时LR和全血对恢复休克后动物血流动力学指标、血气指标以及对存活率的影响无显著性差异;45%和55%失血性休克后,单纯LR输注不能使MAP恢复到90~100 mmHg水平,且对休克动物的血流动力学指标和血气指标以及存活率的影响明显不及输注伞血以后效果好,在55%失血性休克时差异更大.65%放血后动物很快死亡,休克程度太重,不能作为评价模型.结论 55%失血性休克大鼠可作为评价具有携氧液体抗休克作用的实验动物模型.  相似文献   
5.
目的:观察以壳聚糖衍生物-异丁基壳聚糖为基质材料的多功能创面敷料的局部止血、镇痛、抗感染和促愈合作用。方法:实验于2003-03/2004-06在第三军医大学大坪医院野战外科研究所完成。新西兰大白兔54只,Wistar大白鼠6只,昆明种小白鼠14只。采用:①兔肝叶剪损法观察该敷料的止血效果即平均止血时间。②热板法检测该敷料对小鼠的镇痛效果即涂药前、后平均舔足时间。③用家兔伤口污染模型,观察该敷料对伤口局部及全身情况的影响,以观察其局部抗菌消炎效应。④用大鼠背部切割伤模型,观察该敷料对伤口闭合指数和组织羟脯氨酸含量的影响,从而考查其对伤口愈合的作用。结果:局部止血试验:新西兰兔6只,用药组实验数据为11个,对照组实验数据为13个;局部镇痛试验:昆明种小白鼠14只,所得数据两组均为14个;局部促愈合试验:用大白鼠6只,得用药组和对照组1周的伤口闭合指数各6个,局部组织羟脯氨酸含量数据各6个;局部抗菌消炎试验:新西兰兔48只。①用药组平均止血时间明显较对照组短[(55.6±7.4),(147.9±49.9)s]。②涂药前小白鼠平均舔足的时间明显较涂药后短[(19.57±3.63),(39.50±7.98)s]。③兔污染伤口实验结果显示:伤后24h,对照组体温明显高于用药组,两组白细胞变化没有明显差异;伤口局部细菌培养显示对照组菌落数明显多于用药组;用药组伤口情况明显好于对照组,在72h,7d时,用药组痂下无脓,有肉芽生长,而对照组痂下有大量脓,无肉芽生长出来;两组各时相点血浆肿瘤坏死因子-α、白细胞介素-1β和局部肌肉组织肿瘤坏死因子-α、白细胞介素-1β、丙二醛、髓过氧化物酶、超氧化物歧化酶含量无明显差异。④用药组1周的伤口闭合指数为(60.5±12.8)%,而对照组为(39.1±11.3)%;用药组局部组织羟脯氨酸含量为(60.5±5.4)mg/g,对照组为(17.7±4.9)mg/g。结论:异丁基壳聚糖多功能创面敷料具有明显的局部止血、镇痛、抗菌消炎和促愈合作用。  相似文献   
6.
异丁基壳聚糖多功能创面敷料的生物学效应   总被引:3,自引:0,他引:3  
目的:观察以壳聚糖衍生物-异丁基壳聚糖为基质材料的多功能创面敷料的局部止血、镇痛、抗感染和促愈合作用。方法:实验于2003-03/2004-06在第三军医大学大坪医院野战外科研究所完成。新西兰大白兔54只,Wistar大白鼠6只,昆明种小白鼠14只。采用:①兔肝叶剪损法观察该敷料的止血效果即平均止血时问。②热板法检测该敷料对小鼠的镇痛效果即涂药前、后平均舔足时间。③用家兔伤口污染模型,观察该敷料对伤口局部及全身情况的影响,以观察其局部抗菌消炎效应。④用大鼠背部切割伤模型,观察该敷料对伤口闭合指数和组织羟脯氨酸含量的影响,从而考查其对伤口愈合的作用。结果:局部止血试验:新西兰兔6只,用药组实验数据为11个,对照组实验数据为13个;局部镇痛试验:昆明种小白鼠14只,所得数据两组均为14个;局部促愈合试验:用大白鼠6只,得用药组和对照组1周的伤口闭合指数各6个,局部组织羟脯氨酸含量数据各6个;局部抗菌消炎试验:新西兰兔48只。①用药组平均止血时间咀显较对照组短[(55.6 &;#177;7.4),(147.9&;#177;49.9)s]。②涂药前小白鼠平均舔足的时间明显较涂药后短[(19.57&;#177;3.63),(39.50&;#177;7.98)s]。③兔污染伤口实验结果显示:伤后24h,对照组体温明显高于用药组,两组白细胞变化没有明显差异:伤口局部细菌培养显示对照组菌落数明显多于用药组;用药组伤口情况明显好于对照组,在72h,7d时,用药组痂下无脓,有肉芽生长,而对照组痂下有大量脓,无肉芽生长出来;两组各时相点血浆肿瘤坏死因子-α、白细胞介素-1β和局部肌肉组织肿瘤坏死因子-α、白细胞介素-1β、丙二醛、髓过氧化物酶、超氧化物歧化酶含量无明显差异。④用药组1周的伤口闭合指数为(60.5&;#177;12.8)%,而对照组为(39.1&;#177;11.3)%;用药组局部组织羟脯氨酸含量为(60.5&;#177;5.4)mg/g,对照组为(17.7&;#177;4.9)mg/g。结论:异丁基壳聚糖多功能创面敷料具有明显的局部止血、镇痛、抗菌消炎和促愈合作用。  相似文献   
7.
我基本上不吃水果,不知是天生的与水果无缘还是别的什么原因,象遗传啦什么的,总之我平时很少吃水果。水果是好东西,这我也承认,买了骗骗孩子,提着走走亲戚,都挺不错。有时眼睁睁地看着别人水滋滋香喷喷地大嚼大咬,也忍不住咽几口唾沫,及到自己拿来吃,却是实在吃不出那种美滋滋的味儿来,味觉障碍,还嫌冰牙凉肚子,不吃也罢。家里水果多半是儿子承包。丈夫倒也是个喜欢水果的人,从前的水平确实可以和儿子  相似文献   
8.
Objective To investigate the effects of limited resuscitation on hepatic ischernia-reperfusion in-jury in rots with hemorrhagic shock. Method Uncontrolled hemorrhagic shock was induced in 54 rats by transect-ing the middle branch of the splenic artery to produce standardized massive splenic injury. Resuscitation started when the mean arterial pressure (MAP) reached 40 mmHg. The rats were randomly divided (n = 9per group) in-to sham-operated group (SS), or one of five treatment groups in which infusion of Ringer' s solution was continually administrated to maintain MAP at 40 (RS40), 50 (RS50), 60 (RS60), 80 (RS80) or 100 mmHg (RS100) for 45 minutes (T45 point). After the bleeding was controlled, resuscitation was continued with Ringer's solution and whole blood (2:1) to increase the MAP to 100 mmHg for 120 minutes (T165 point), which was followed by obser-vation for 240 minutes (T405 point). All animals were observed for 240 minutes or until death. Blood specimens were collected at TO, T45, T165 and T405 for determination of blood lactate levels. At the end of the experiment,a small amount of hepatic tissue was collected to measure tissue blood perfusion, total antioxidative capacity (TAOC), Na+K+ ATPase activity and malondialdehyde (MDA) levels. Results At T405, the blood lactate lev-els in the RS80 and RS100 groups [(3.60±0.68) and (3.84 ± 1.09) mmol/L, respectively] were significantly higher than those in the SS, RS40, RS50 and RS60 groups [(2.00±0.66),(2.74±1.45),(2.43 +0.94) and (2.07±0.95) mmol/L, respectively;all:P < 0.05]. The MDA levels were significantly higher in the RS80 and RS100[(7.32±0.31) and (7.71±0.23) nmol/mg,respectively] than those in the SS, RS40, RS50 and RS60 groups[(4.95±0.80),(6.14±0.94),(6.42±0.48) and (6.84±0.36) nmol/mg, respeetively;all: P <0.05]. The Na+ K+ ATPase and TAOC levels were significantly lower in all of the RS groups than those in the SS group (all: P < 0.05), and those in the RS80 and RS100 groups was significantly lower than those in the RS40,RS50 and RS60 groups (all: P <0.05). Blood perfusion in the RS80 and RS100 groups was significantly lower than that in the other groups (all: P < 0.05). Conclusions If hemorrhage is uncontrolled, limited resuscitation appears to balance the needs for organ perfusion, improve the microcircttlation and decrease lactate levels. Fur-thermore, limited resuscitation could decrease ischemia-reperfusion injury in liver tissue.  相似文献   
9.
修性随愿     
道可道,非常道,是老子说的,有点象绕口令,根据研究老子的人的译注和解释,这好像是说,凡是能够说得出道道的道理,凡是能够举得出具体形状的东西,也就不是永恒不变的道道了。老子真是很了不起,三千多年前就说出了  相似文献   
10.
目的探讨乳腺癌抗雌激素药物耐药蛋白(breast cancer anti-estrogen resistance 1,BCAR1)在非小细胞肺癌(non-small cell lung cancer,NSCLC)中的表达以及临床意义。方法采用组织芯片(tissue microarray,TMA)和免疫组化法(immunohistochemistry,IHC)检测2006年2月至2007年2月本中心70例NSCLC和癌旁正常肺组织,以及28例肺良性肿瘤(错构瘤12例,炎性假瘤8例,纤维瘤8例)中BCAR1的表达情况。结果 NSCLC中BCAR1蛋白阳性率为98.6%(69/70),癌旁正常肺组织中仅有3例弱阳性,阳性率为4.2%(3/70),肺良性肿瘤中无阳性表达,NSCLC与两者比较差异有显著性(χ2=143.93,P=0.000)。BCAR1表达在不同年龄、性别、淋巴结转移、TNM分期和病理类型表达差异无统计学意义(P>0.05),而与肿瘤分化程度呈负相关(χ2=13.639,P=0.001)。用Kaplan-Meier生存曲线经Log-rank检验发现,BCAR1高表达组预后比低表达组生存时间短(P=0.014)。结论在NSCLC中BCAR1蛋白表达显著高于正常组织和肺良性肿瘤,并与NSCLC的分化程度和预后呈负相关。BCAR1蛋白可以作为NSCLC诊断和判断预后一个重要的新指标。  相似文献   
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