宫颈癌组织中VEGF和nm23-H1表达及临床意义

目的探讨宫颈癌组织中VEGF和nm23-H1蛋白表达作为判断宫颈癌患者预后因素的意义。方法应用免疫组织化学S-P法对105例宫颈癌及10例慢性宫颈炎和20例癌旁组织进行VEGF和nm23-H1蛋白产物检测，并对宫颈癌惠者化疗后进行5a以上随访，分析它们与宫颈癌患者复发、转移及预后的关系。结果慢性宫颈炎组织中VEGF表达均为阴性，nm23-H1表达阳性率为90．0％；癌旁组织VEGF阳性表达率为45．0％，nm23-H1阳性表达率为75．0％；宫颈癌组织中VEGF阳性表达率为72．4％，nm23-H1阳性表达率为47．6％。VEGF阳性表达和nm23-H1阴性表达与宫颈癌患者局部复发（分别为P〈0．05，P〈0．01），转移（分别为P〈0．01，P〈0．05）和较短的生存期（分别为P〈0．01，P〈0．01）密切相关。VEGF蛋白表达与nm23-H1蛋白表达呈负相关（P〈0．05）。结论宫颈癌活体组织检测标本中VEGF和nm23-H1的表达与肿瘤的浸润、转移及预后密切相关，可作为预测宫颈癌患者的预后因素。     

富硒板党对小鼠益智和低氧/复氧损伤的保护

目的探讨富硒板党对小鼠益智和低氧/复氧损伤的保护作用。方法益智实验采用苯异丙腺甘(PIA)致小鼠学习记忆障碍等益智模型;抗氧化实验采用小鼠低氧/复氧损伤的模型,检测小鼠血液中活性氧(ROS)、过氧化氢酶(CAT)、超氧化物歧化酶(SOD)和丙二醛(MDA)值。结果富硒板党水煎液可提高小鼠的学习记忆能力,明显延长小鼠游泳时间;降低ROS和MDA值,增强SOD活性,对CAT作用不明显。结论富硒板党对小鼠具有益智和低氧/复氧损伤的保护作用。     

九一升白口服液在^131I治疗伴WBC减少Graves病的应用

目的评价九一升白口服液在^131I治疗伴WBC减少Graves病（GD）患者的临床安全性及治疗效果。方法GD伴WBC减少（外周血WBC〈4.0×10^9/L）患者97例,根据运用升高WBC药物不同随机分为2组：治疗组给予九一升白口服液＋^131I,对照组给予鲨肝醇、维生素B4和利血生＋^131I;根据甲状腺大小、最高摄^131I率、甲状腺功能亢进症（简称甲亢）病程及年龄,常规方法确定^131I治疗剂量;治疗后定期复查外周血象和甲状腺功能,随访6～12个月。结果97例患者^131I治疗后甲状腺功能恢复正常70例,功能改善15例,功能减退8例,无效4例。患者外周血WBC较治疗前增加,各组治疗前后WBC差异均有统计学意义（P〈0.05）,但治疗组较对照组回升快而明显（P〈0.05）。结论九一升白口服液在^131I治疗伴WBC减少GD安全、有效,九一升白口服液是一种较理想的升高WBC的治疗药物。     

Significance of Rosiglitazone Inhibiting TLR4 Expression in Partial Hepatic Ischemia/Reperfusion of Mice

The effect of rosiglitazone as the ligand of peroxisome proliferator-activated receptor γ (PPARγ) inhibiting the TLR4 expression in ischemic lobes in partial hepatic ischemia/reperfusion injury (IRI) in BABL/C mice and the action of rosiglitazone inhibiting the TLR4 receptor-mediated inherent immune response were investigated. The model of the mouse partial hepatic ische- mia/reperfusion injury was established. All the animals were randomly divided into 3 groups: rosiglitazone group, vehicle (dimethylsulphoxide, DMSO) group and sham operation group. The hepatic samples were collected when mice were sacrificed 0, 2, 4 and 6 h after reperfusion following 1 h ischemia to analyze the acute phase of hepatic IRI. The dynamic expression of TlR4 mRNA was de- tected quantitatively by real-time-PCR, and the levels of TNF-α, IL-10 and ALT in portal vein were determined in all groups. After restoration of blood supply, the expression of TLR4 mRNA in ischemic lobes was detected in 0, 2, 4 and 6 h after reperfusion following 1 h ischemia in rosiglitazone group and vehicle group. The most intensive expression of TLR4 mRNA was present at 4 h after reperfusion in ischemic lobes in vehicle group. As compared with vehicle group, the expression of TLR4 mRNA in ischemic lobes in rosiglitazone group was significantly decreased at 4 h after reper- fusion. The level of IL-10 in portal vein was markedly up-regulated in rosiglitazone group as compared with vehicle group. Contrarily, the levels of TNF-α and ALT in portal vein were markedly down-regulated in rosiglitazone group as compared with vehicle group at every time point in mouse partial hepatic IRI model. Rosiglitazone could alleviate the hepatic IRI by inhibiting TLR4 receptor-mediated inherent immune response.     

生脉散对小鼠免疫和造血功能影响

目的观察古方生脉散口服液对小鼠免疫和造血功能的影响。方法用注射给予环磷酰胺的方法形成小鼠白细胞减少症模型,生脉散灌胃给药,以外周血白细胞、骨髓有核细胞数、淋转指数、网织红细胞以及细胞肿瘤因子（TNF）、白细胞介素-6（IL-6）为观察指标。结果病理模型小鼠外周血白细胞、网只红细胞、骨髓有核细胞数明显减少,淋转指数下降,TNF、IL-6活性降低,生脉散可促进上述各指标的恢复及升高（P〈0.05,P〈0.01）。结论生脉散口服液有显著改善机体免疫功能和刺激骨髓造血功能的作用。     

番石榴叶对大鼠实验性结肠炎的保护作用

目的：研究番石榴叶对大鼠结肠炎损伤的保护作用及其机制。方法：建立大鼠结肠炎模型，灌肠用药2周后，评价大鼠结肠黏膜损伤指数（CMDI），检测结肠髓过氧化物酶（MPO）、超氧化物歧化酶（SOD）、谷胱甘肽过氧化物酶（CSH—PX）活性及丙二醛（MDA）的含量。结果：不同剂量番石榴叶（200、500、800mg／kg．bw）灌胃用药后均能不同程度降低模型大鼠结肠黏膜损伤指数和MPO活性、减少MDA含量。提高SOD、GSH—PX活性，且与用药剂量呈一定量效关系。结论：番石榴叶通过抗脂质过氧化。对大鼠结肠炎结肠损伤进行修复，减轻结肠损伤．抑制结肠炎大鼠炎症反应。     

18例不明原因的消化道出血的数字减影血管造影诊断及介入治疗

目的：研究不明原因的消化道出血的数字减影血管造影（Digital Subtraction Angiography，DSA）诊断及介入治疗。方法：报告18例不明原因消化道出血的DSA表现及结果。结果：16例明确了出血部位及出血原因，2例造影阴性；其中10例行介入性栓塞治疗。结论：DSA对不明原因的消化道出血有肯定的诊断价值及治疗意义。     

人SFRP1基因及其编码蛋白基本特性及抗原表位的生物信息学分析

目的:通过生物信息学分析人分泌型卷曲相关蛋白1(SFRP1)基因编码蛋白的主要特性与抗原表位,筛选该蛋白的T/B细胞联合表位。方法:利用蛋白分析专家系统(ExPASy)提供的ProtParam、SignalP、SO-SUI、MotifScan、NCBI上的ORF finder、SYFPEITHI、NetCTL等生物信息学在线分析程序,结合Gene Runner、DNAMAN、DNAStar等生物信息学软件,分析、预测SFRP1蛋白的理化性质、信号肽、可溶性、表面可及性、可塑性、跨膜区、翻译后修饰位点、亲(疏)水性、二级结构、T/B细胞抗原表位等。结果:该蛋白由314个氨基酸组成,分子式为C1588H2516N426O436S26,分子质量单位为35.3856kD,等电点理论值为9.10,波长280nm时的吸光度(A)值为1.029,半衰期为30h,有16个潜在B细胞表位、2个CTL表位和辅助性T细胞联合表位、3个T/B细胞联合表位,为可溶性表达蛋白。结论:SFRP1基因编码的SFRP1为可溶性表达蛋白,有3个T/B细胞联合表位,可作为人类多种肿瘤免疫学治疗的重要靶点。     

Automated seizure onset detection for accurate onset time determination in intracranial EEG

ObjectiveA novel algorithm for automated seizure onset detection is presented. The method allows for precise identification of electrographic seizure onset times within large databases of electrographic data.MethodsThe patient-specific algorithm extracts salient spectral and temporal features in five frequency bands within a sliding window of an electrographic recording. Feature windows are classified as containing or not containing a seizure onset via support vector machines. A clustering and regression analysis is utilized to accurately localize seizure onsets in time. User-adjustable parameters allow for tuning of detection sensitivity, false positive rate, and latency. The method was tested on intracranial electrographic data recorded from six patients with a total of 1792 recorded seizure onsets from 8246 total electrographic recordings.ResultsTesting of algorithm performance via cross-validation resulted in sensitivities between 80% and 98%, false positive rates from 0.002 to 0.046 per minute (0.12–2.8 per hour), and median detection time within 100 ms of the electrographic onset for all patients. In five of the six patients, more than 90% of all detected onsets were less than 3 s from the electrographic onset.ConclusionsThe detection system was able to detect seizure onset times in a temporally unbiased fashion with low latency while maintaining reasonable sensitivities and false positive rates. The regression algorithm for temporal localization of onsets confers a considerable benefit in terms of detection latency.SignificanceWith the use of our algorithm, large databases of electrographic data can be rapidly processed and seizure onset times accurately marked, facilitating research and analyses of peri-onset events that require precise seizure onset alignment.     

黑故子酊对白癜风的作用

白癜风属中医"白癜"、"白驳风"的范畴。主要由于酪氨酸酶缺乏,而不能合成黑色素,致使局部皮肤色素脱失,病程长,可持续终身,易诊难治。临床表现为皮损局部呈乳白色,毛发也可变白。好发于面部、颈部、手背、腰骶部及会阴部等。本文报道中药方剂黑故子对其治疗的效果及机制。