急性动脉粥样硬化性脑梗死患者外周血单核细胞4-1BB配体表达水平的变化

目的 研究急性动脉粥样硬化性脑梗死(ACI)患者外周血单核细胞(PBMC)4-1BB配体(4-1BBL)表达水平的变化.方法 通过流式细胞术和酶联免疫吸附分析(ELISA)测定20例ACI患者PBMC4-1BBL的表达和血浆可溶性4-1BBL(s4-lBBL)的浓度,并与19例动脉粥样硬化患者及23名健康对照者进行比较...     

血浆SIOOB蛋白在缺氧缺血性脑病新生儿的诊断评估

目的探讨血浆S100B蛋白对缺氧缺血性脑病（hypoxic ischemic encephalopathy，HIE）新生儿脑损伤的临床意义。方法选择54例临床诊断为HIE的新生儿在出生12h时抽血检测S100B、神经元特异性烯醇化酶（neuron specifice Dolase，NSE）及脑型肌酸激酶同功酶（creatine kinaes BB isozyme，CK-BB），与47例非HIE的窒息新生儿和22例健康新生儿进行对照比较。评价敏感性和特异性，绘制ROC曲线，计算ROC曲线下面积。结果出生12h时HIE患儿血浆S100B、NSE和CK-BB阳性率显著高于窒息组和对照组（均P〈0．01），S100B对HIE的敏感性为88．89％，特异性为82．61％，之和高于NSE及CK-BB。S100B的ROC曲线下面积最大（面积：0．950；95％可信区间0．918—0．983），临床诊断效能高于NSE及CK-BB。结论HIE患儿出生12h时血浆S100B、NSE和CK-BB均能预示HIE患儿的脑部损伤，S100B阳性率最高．三指标联合检测．有助于HIE的早期诊断和病情判断。     

CT volume/density ratio as the marker of ischaemic brain injury

Kurzepa J, Bielewicz J, Czekajska‐Chehab E, Kurzepa J, Bartosik‐Psujek H, Grabarska A, Stelmasiak Z. CT volume/density ratio as the marker of ischaemic brain injury.
Acta Neurol Scand: 2011: 123: 310–315.
© 2010 John Wiley & Sons A/S. Objectives – We believe that the CT volume/density ratio (VDR) of infarcted area reflects the degree of brain tissue damage during ischaemic stroke (IS). Patients and methods – Forty six patients with IS were prospectively enrolled into the study. CT scan was performed on days 1 and 10 of hospitalization. S100BB serum level, gelatinase activities (MMP‐2 and MMP‐9) and neurological examination (NIHSS) were performed on days 1, 5 and 10 of IS. After 3 months, 42 patients were examined by functional disability scales: Barthel index (BI) and modified Rankin scale (mRS). Results – The VDR of ischaemic focus correlated well with the average S100BB serum level, MMP‐9 serum activity and NIHSS score. The weak but statistically significant relationships were noticed between the VDR vs BI and mRS estimated 3 months after stroke. Conclusion – VDR reflects well the damage ratio of brain tissue during IS. In addition, the study underlines the relationship between VDR vs patients’ neurological status and disability after IS.     

晶状体蛋白βB2基因突变导致常染色体显性遗传先天性白内障

目的定位常染色体显性遗传先天性粉尘状核性白内障一家系的致病基因。方法收集该家系资料,针对与常染色体显性遗传先天性白内障发病相关的14个热点致病基因设计引物,对此4代先天性白内障家系进行热点突变位点的分析,了解是否有相应的改变。结果此家系患者编码人类晶状体蛋白的基因βB2的第6外显子存在一个C→T突变,此突变导致终止密码子提前出现。该基因的第2外显子的第40个核苷酸存在A/T的单核苷酸多态性。结论编码人类晶状体蛋白的基因βB2是此先天性白内障家系的致病基因。     

瓜蒌薤白汤对平阳霉素所致大鼠肺纤维化肺组织中细胞因子PDGF-BB表达的影响

目的：探讨瓜蒌薤白汤防治肺纤维化的作用机制。方法：大鼠随机分为正常组，模型组，瓜蒌薤白汤组，阳性药氢化可的松组。用平阳霉素（3mg·kg^-1）复制大鼠肺纤维化模型后，用药组每天灌胃瓜蒌薤白汤0．02mL·kg^-1，氢化可的松组腹腔注射5mg·kg^-1。用药28d后处死，观察、比较各组大鼠肺组织中血小板源生长因子BB（PDGF-BB）的表达。结果：模型组大鼠肺组织中PDGF-BB表达均明显高于正常组及用药组（P〈0．05）。结论：瓜蒌薤白汤能明显抑制肺组织中PDGF-BB过度表达。     

CD137信号对小鼠树突状细胞表面TLR4表达的调节

目的 探讨CD137（4-1BB）激发型单克隆抗体2A对小鼠未成熟树突状细胞株DC2.4表面TLR4表达的调节。方法 以流式细胞术检测不同剂量2A、LPS,或LPS预刺激后再加入2A等因素作用下,DC2.4表面的TLR4表达情况。结果 LPS下调TLR4表达,2A使DC2.4上TLR4表达上调,并拮抗LPS对TLR4的下调作用。LPS预处理后再加入2A,也拮抗LPS的下调作用。结论 CD137信号可以上调DC2.4表面TLR4的表达。     

非小细胞肺癌中VEGF-C?PDGF-BB与淋巴管生成和淋巴结转移的关系

目的:探讨血管内皮生长因子C(VEGF-C)和血小板衍生生长因子BB(PDGF-BB)在非小细胞肺癌(NSCLC)中的表达与淋巴管生成和淋巴结转移的关系.方法:分别应用免疫组化SP法和Envision System法检测40例NSCLC和10例肺良性病变组织中VEGF-C和PDGF-BB的表达;应用淋巴管特异标志 Podoplanin 检测NSCLC中淋巴管密度(LVD),并做相关统计分析.结果:VEGF-C和PDGF-BB在NSCLC中阳性表达率均显著高于肺良性病变(VEGF-C:62.5% vs 10%,P<0.05;PDGF-BB:60% vs 10%,P<0.05).淋巴结阳性组的VEGF-C阳性表达率显著高于淋巴结阴性组 (94.1%vs 39.1%,P<0.05),但未发现PDGF-BB表达与淋巴结有关(76.5%vs 47.8%,P>0.05).NSCLC中淋巴结阳性组的LVD显著高于淋巴结阴性组(16.58±2.38vs 9.88±1.93,P<0.05),VEGF-C 和 PDGF-BB阳性表达组的LVD均显著高于阴性表达组(VEGF-C:14.74±3.62 vs 9.37±1.35,P<0.05;PDGF-BB:13.84±4.23 vs 11.06±2.90,P<0.05).NSCLC中 VEGF-C与PDGF-BB的表达具有显著相关性(rs=0.422,P<0.05).结论:淋巴管生成是淋巴结转移的一个重要因素;PDGF-BB参与了淋巴管生成,但对于促进淋巴结转移可能不是必要的:VEGF-C通过参与淋巴管生成而促进淋巴结转移,其预测NSCLC发生淋巴结转移可能性的价值优于PDGF-BB;PDGF-BB和VEGF-C在促进淋巴管生成的作用上可能具有相关性.     

Bombesin and its family of peptides: prospects for the treatment of obesity

Bombesin, its family of bombesin-like peptides, and many other peptides/hormones modulate biological and behavioral functions in animals. Among the wide variety of functions influenced by bombesin/bombesin-like peptides, the most prominent may be their role in feeding-related behavior. Over many years, intensive psychopharmacological studies have addressed the mechanisms by which these peptides induce feeding suppression, and the results suggest the applicability of bombesin/bombesin-like peptides for the treatment of eating disorders and/or obesity in humans. Recent studies using gene-knockout mice also shed new light on the relationship between bombesin/bombesin-like peptides and feeding behavior. In addition, genetic analyses of the possible links between bombesin/bombesin-like peptides/receptors and human obesity have also been undertaken. Here, we briefly review the literature pertaining to the relationship between bombesin/bombesin-like peptides and feeding behavior—with particular attention to human subjects—and discuss the pharmacotherapeutic potential of bombesin/bombesin-like peptides with regard to obesity.     

Effect of insulin treatment on tissue size of the genitourinary tract in BB rats with spontaneously developed and streptozotocin-induced diabetes

To examine the differences between spontaneous and streptozotocin (STZ)-induced diabetes, four parallel studies were performed; three studies of diabetes-prone BB (BBDP/Wor) rats maintained for 8, 16, and 32 weeks and one study of STZ-injected diabetes-resistant BB (BBDR/Wor) rats maintained for 32 weeks. Each diabetic study has three groups of rats: a control group; a euglycemic group, which received sufficient amounts of insulin; and a hyperglycemic group, which received a suboptimal dose of insulin. The extent of tissue weight changes was generally shown to be less dramatic in the euglycemic diabetic than in the hyperglycemic diabetic rats. STZ-induced diabetes increased the bladder weight more dramatically (up to 3-fold) than did spontaneous diabetes (up to 2-fold). Furthermore, a significant decrease in the size of the adrenal gland (20%) and testis (10%) is observed only with spontaneous diabetes, whereas a significant decrease in the size of the ventral prostate (30%) is observed only with STZ-induced diabetes, although the serum testosterone levels are similar in both groups. Our data demonstrate that there are differences in the effect of insulin treatment on the tissue size of the genitourinary tract between spontaneously developed and streptozotocin-induced diabetes in BB rats.