还原型谷胱甘肽联合甘草酸二铵对腹部开放伤后海水浸泡犬肝功能损伤的治疗作用

Objective To investigate effect of reduced glutathione and diammonium glycyrrhizinate on the treatment of hepatic damage in experimental dogs following open abdominal injuries coupled with seawater immersion. Methods Twenty-four dogs with open abdominal injuries were randomly divided into 3 groups: the control group (given with simple observation after 1.5 h seawater immersion); the routine treatment group (given routine care and fluid transfusion after 1.5 h seawater immersion) ; the hepatic treatment group (given routine are, fluid transfusion and hepatic treatment as well, after 1.5 h seawater immersion). Each group consisted of 8 dogs. Blood samples were taken at different time points to measure total bilirubin (TB), alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH), prothromin time (PT), endotoxin, tumor necrosis factor-α(TNF-α), interleukin-6 (IL-6), and pathological examination was also made at the same time. Results For the control group, contents of TB, ALT, AST and LDH increased significantly and survival time was less than 24 hours. Contents of TB, ALT, AST and LDH of the routine treatment group also increased significantly, but survival time of all the experimental animals was mere than 24 hours. Reduced glutathione and diammonium glycyrrhizinate could reduce the extent of lesion quite significantly 12～24 hours following open abdominal injuries. Conclusions Reduced glutathione and diammonium glycyrrhizinate seemed to have good effects on the treatment and prevention against hepatic damage induced by trauma coupled with seawater immersion. It could be used as a primary means for the treatment of such kind of hepatic damage.     

幼猪头颅低剂量螺旋CT扫描参数优化研究

Objective To optimize the scanning parameters for CT with lower radiation dose on the infant pigs' brain which mimic the baby's head of human being. Methods Five pigs underwent CT scan using regular X-ray dose I. E. , 400 mAs, and other dose including 300,250, 200,150 and 100 mAs respectively, and the other parameters were the same. Each pig was scanned 12 times repeatedly with each of the six X-ray doses, which obtained 960 image. Anatomic details and the confidence level in reaching a diagnosis were evaluated by three radiologists respectively in a double-blinded manner using a 4-point scoring system. The CTDI of every group were compared. All Results were analyzed by Chi-square test and analysis of variance. Results The CTDI of 400,300,250,200,150,100 mAs was (55.5±0.1),(41.9±0.0), (34.7±0.0), (27.8±0.0), (20.9±0.0), (12.2±0.0) mGy respectively, there was a significant difference(F = 214872.0,P < 0.05)among the six groups. There was no significant difference in the quality of images obtained from the conventional 400 mAs scanning and low dose group of 300,250,200, 150 mAs scanning images, the total score was (3.7±0.5), (3.7±0.5), (3.6±0.3), (3.6±0.5), (3.6±0.5) respectively,which was more than 3 points, while the 100 mAs group showed low quality (2.1±0.5) which was less than 3 points. In the 100 mAs group, there were 215 in 960 images >3 points, 745 images < 3 points, and regular doses of 400 mAs group (934 image > 3 points). Image quality difference was statistically significant (χ2=3289.9,P <0.05). Conclusion The low-dose scanning (120 kV, 150 mAs, 20.8 mGy)would be practical in diagnosing in normal infant pigs' brain.     

混合型过敏性紫癜1例及诊断分析

报道1例以紫癜、急性胰腺炎、十二指肠降部溃疡和心脏受损为主要临床表现的成年女性病例.复习1990年美国风湿病学会制订的过敏性紫瘢新的诊断标准及在该病例的应用.临床怀疑腹型或混合型过敏性紫癜的患者,对实验室和影像学检查结果要综合分析,多次复查,有助于诊断和疗效的判断.     

乌司他汀联合生长抑素治疗重症急性胰腺炎疗效观察

 目的 观察联合应用乌司他汀和生长抑素治疗重症急性胰腺炎的疗效.方法 重症急性胰腺炎38例,分为生长抑素治疗组18例,乌司他汀+生长抑素治疗组(联合治疗组)20例,观察不同方案治疗组患者的症状、体征、血淀粉酶、C反应蛋白、TNF-a、IL-6、IL-8的变化.结果 (1)联合治疗组的症状、体征缓解率明显高于生长抑素组(P＜0.05);(2)联合治疗组的血淀粉酶及白细胞水平和生长抑素组相比下降速度更快(P＜0.05);(3)治疗后两组的CRP、TNF-a、IL-6、IL-8均下降,但治疗后第3天、第5天,联合治疗组较生长抑素治疗组CRP、TNF-a、IL-6、IL-8值更低、下降速度更快(P＜0.05);(4)联合治疗组的有效率(90.O%)明显高于生长抑素治疗组(72.2%)(P＜0.05).结论 联合应用乌司他汀和生长抑素治疗重症急性胰腺炎,可控制病情发展,提高治疗有效率,值得临床进一步观察.     

供体血管内皮细胞对小鼠-大鼠移植心脏存活时间的影响

目的:探讨供体血管内皮细胞对小鼠-大鼠移植心脏存活时间的影响.方法:分离小鼠血管内皮细胞并于移植前14天经大鼠阴茎背静脉注入2×106细胞/只或联合注射环磷酰胺20mg/Kg·D.异位小鼠-大鼠心脏移植后观察供心存活时间.结果:成功分离小鼠血管内皮细胞,注射小鼠血管内皮细胞14天后,移植心脏平均存活时间10±1.414min,组化染色显示供心有IgM、C3沉积,血浆IgM、IgG、C3、C4较未注射血管内皮细胞组明显增高;联合使用环磷酰胺能延长供心成活时间19.44±2.6034min(t=2.880,P＜0.01).结论:外周静脉注射供体血管内皮细胞不能诱导延迟性异种移植排斥反应(DXR)的免疫耐受,却促使发生HAR.联合环磷酰胺可延长供心存活时间.     

血红素氧合酶-1对移植的异种心脏的保护作用

目的探讨血红素氧合酶-1(HO-1)对移植的异种心脏的保护作用及其可能机制。方法应用NI H小鼠到Wistar大鼠颈部异位心脏移植模型,术前对供者分别用HO-1的诱导剂CoPP或HO-1的阻滞剂ZnPP进行处理,术后受者相应接受CoPP或ZnPP处理,部分受者同时接受环孢素A(CsA)处理,并设空白对照组和单用CsA组。分别用免疫组化、逆转录聚合酶链反应、Westernblot蛋白印迹杂交等检测移植心组织中HO-1、HO-1mRNA、凋亡蛋白酶-3以及信号传导与转录因子-3(STAT-3)的表达,测定心肌组织中HO-1的活性,采用原位末端标记法检测心肌细胞凋亡情况,比较不同处理因素之间的差异。结果单一接受CoPP者(CoPP组)移植心脏存活时间长于空白对照组及单一接受ZnPP者(P<0.01),但短于同时接受CoPP和CsA处理者(CoPP CsA组,P<0.01);CoPP组及CoPP CsA组HO-1、HO-1mRNA的表达及HO-1的活性均高于其余各组(P<0.01),其心肌细胞凋亡数和凋亡蛋白酶-3低于其余各组(P<0.05),而STAT-3高于其余各组(P<0.01)。结论CoPP诱导产生的HO-1可延长NI H小鼠到Wistar大鼠异种移植心脏的存活时间,该作用可能与STAT-3激活、凋亡蛋白酶-3受抑制而导致心肌细胞凋亡发生率下降有关。     

衣霉素对RPMI-8226细胞分化的影响

目的:探讨衣霉素对RPMI-8226细胞分化的机制.方法:用衣霉素处理RPMI-8226细胞.APAAP法测定细胞表面CD49e的表达率;ELISA法测定培养上清液中免疫球蛋白轻链的变化,Western blot法检测XBP-1u蛋白表达水平.结果:衣霉素处理后RPMI-8226细胞表面CD49e表达率增高,细胞培养上...     

经内镜胆管支架或鼻胆管置放结合γ刀治疗晚期胰腺癌的临床观察

目的 探讨经十二指肠镜胆管支架或鼻胆管置放与γ刀结合治疗晚期胰腺癌的疗效.方法 有35例晚期胰腺癌病人接受治疗,其中26例被放置塑料支架,6例放置鼻胆管,均行γ刀治疗10～12次/疗程,总剂量为40～50 Gy.结果 插管成功率91.4%,并发症3例,并发症发生率9.4%,2例急性胰腺炎,1例急性胆管炎.血清胆红素由310 μmol/L下降到术后1周的126 μmol/L.治疗后3个月、6个月存活率分别达96%及80%.结论 经内镜胆管支架置放或鼻胆管置放结合γ刀治疗晚期胰腺癌是安全、有效的方法.     

上海市卢湾区现制现售水行业卫生现状调查

随着生活水平的不断提高,人们对生活饮用水特别是饮水品质要求越来越高,由单一品种发展到矿泉水、纯净水、离子水、富氧水等,其共同特点是直接饮用。目前,一种以现制现售纯净水方式的自动售水机以其低廉的价格和便捷的售卖形式正逐渐渗透到市民的日常饮水消费生活中。在国外,这种直饮技术最早应用于载人宇宙飞船中,现已在城市生活中得到普遍的应用。该种自动售水机通过过滤、臭氧消毒、反渗透等水处理工艺对市政自来水进行灭菌消毒处理。2006年5__9月,我们对卢湾区内的现制现售纯净水生产单位的基本情况进行了全覆盖的调查,并对出水进行了卫生学检测,现将调查结果进行分析,并提出改进措施。[第一段]     

昆布多糖硫酸酯对化疗药物治疗肝癌细胞的增敏作用

目的：探讨LAMS对肝癌细胞化疗的增敏作用。方法：以免疫组化法测定用LAMS前后肝癌细胞Bcl—2基因蛋白含量，以MTT法分别测定5—Fu、MTX、MMC、ADM、CTX与LAMS联合及单独治疗肝癌细胞的IC50以及有效作用时间。结果：LAMS使肝癌细胞Bcl—2基因蛋白表达下降，并使肝癌细胞对5—Fu、MTX、MMC、ADM、CTX的敏感性增加，有效作用时间延长。结论：LAMS可有效地增加肝癌细胞对5—Fu、MTX、MMC、ADM、CTX的敏感性。