S-100 beta and insulin-like growth factor-II differentially regulate growth of developing serotonin and dopamine neurons in vitro.

To study the phenotypic specificity of S-100 beta and insulin-like growth factor II (IGF-II) for developing monoamine neurons, serotonin (5-HT) neurons from the embryonic day 14 (E14) rostral raphe or dopamine (TH) neurons from the substantia nigra/ventral tegmental area were cultured for 3 days in vitro (3 DIV) in the presence of these factors. Neuronotrophic effects were analyzed by computer-assisted morphometry of 5-HT and TH-immunoreactive neurons. S-100 beta and IGF-II differentially regulated the growth of 5-HT and TH neurons but did not affect their survival. S-100 beta significantly increased several parameters of neurite outgrowth by 5-HT neurons but inhibited the spatial extent (field area) of TH neurites. IGF-II promoted growth of cell bodies of both phenotype, but only stimulated neurite outgrowth by TH neurons. S-100 beta and IGF-II differentially affected the number of GFAP immunoreactive cells from raphe and substantia nigra, but these effects did not correlate with the specificity of neuronotrophic effects. S-100 beta and IGF-II immunoreactivities were expressed in glial cultures derived from the same brain regions, raising the possibility that these factors have autocrine effects on glia as well as paracrine actions on neurons. The results of this study suggest that specificity of neurotrophic factors for particular embryonic neurons may be correlated with their neurotransmitter phenotype.     

雷公藤氯内酯醇对大鼠异位心脏移植免疫抑制作用的实验研究

本研究应用纯系大鼠（Ｌｏｕ→Ｆ３４４）心脏移植模型，比较分析了ＣｓＡ和不同剂量Ｔ４治疗组的移植心脏存活时间、病理损害计分以及移植受体大鼠脾单个核细胞ＩＬ－２生成活性和血清ｓＩＬ－２Ｒ水平，证实Ｔ４可明显延长移植心脏存活时间和减少移植排异反应程度。此研究结果表明Ｔ４具有较强的抗移植排异作用。     

低剂量电离辐射对小鼠免疫器官cAMP和儿茶酚胺含量的影响

本文报道，７５ｍＧｙ／（１２．５ｍＧｙ／ｍｉｎ）单次全身Ｘ射线照射后９小时用ＳＲＢＣ免疫Ｃ５７ＢＬ／６小鼠，在免疫后４天和７天脾脏、胸腺和下丘脑ｃＡＭＰ含量均降低；而在免疫后４天脾脏去甲肾上腺素、肾上腺素和酪氨酸含量均增高，免疫后７天肾上腺素含量仍持续增高；当连接γ射线６５ｍＧｙ（０．０１５ｍＧｙ／ｍｉｎ，６ｈ／ｄ）全身照射小鼠后即刻或２９小时后免疫，脾脏和下丘脑ｃＡＭＰ含量也均降低。提示，低剂量     

TCM treatment of retinal vein occlusion in 216 cases

Traditional Chinese Medicine was adopted in the treatment of 216 cases (219 eyes) of retinal vein occlusion. The period of treatment averaged 3 months; the total rate of efficacy was 80.4%. During an average follow-up of 3 years, 84.1% of the patients maintained a stable or slightly improved vision. The authors believed that treatment of the disease with TCM promoted the absorption of blood and formation of collateral circulation, and suppressed neovascularization, thus preventing repeated bleeding that would lead to serious complications.     

Effect of a single dose of the selectin inhibitor TBC1269 on early and late asthmatic responses

BACKGROUND : Selectins participate in the initial phase of leucocyte migration from circulation to inflamed tissues and may play a role in inflammatory cellular influx into airways in asthma. In the sheep asthma model, TBC1269, a pan-selectin antagonist, reduced late allergen response by 74%. OBJECTIVE : To determine whether a single dose of TBC1269 inhibits early (EAR) and late (LAR) asthmatic responses, and whether it inhibits sputum leucocyte influx after inhalation allergen challenge in atopic asthmatic subjects treated with bronchodilators only. METHODS : Twenty-one asthmatic subjects (mean+/-SD, age=32.5+/-6.7 years, 8 males, FEV1 percent predicted=84+/-15%) with known late asthmatic response based on a screening inhalation allergen challenge were randomly assigned to receive intravenous treatment with either placebo (n=11) or TBC1269 (n=10, 30 mg/kg) infused over 15 min immediately prior to a second (post-treatment) allergen challenge at least 4 weeks after the screening challenge. After each challenge, EAR and LAR were monitored for 7 h. In addition, sputum was induced 1 day before and 1 day after each allergen challenge. RESULTS : TBC1269 did not attenuate the EAR compared with placebo (largest fall in FEV1 within 1 h of 34.1+/-13.9% vs. 31.8+/-12.2% for TBC1269 and placebo groups respectively, P=0.61) or the LAR (largest fall in FEV1 between 3 and 7 h of 39.3+/-15.3% vs. 32.6+/-13.8%, P=0.24). TBC1269 had only minor effects on allergen-induced sputum eosinophilia. CONCLUSION : We conclude that TBC1269 administered before allergen challenge as a single intravenous dose does not attenuate early or late asthmatic responses to allergen in asthmatic subjects.     

脑心通对颈动脉粥样硬化症患者临床症状及IMT的影响

目的：观察脑心通胶囊对颈动脉粥样硬化症患者临床症状及颈动脉内膜中层厚度（IMT）的影响。方法：对照组102例单用尼莫地平20mg，每日3次；治疗组102例在对照组基础上加脑心通胶囊2粒（0．8g），每日3次。总疗程3个月，比较两组治疗前后临床症状及IMT情况。结果：治疗组临床症状缓解总有效率93．14％，IMT明显改善，均优于对照组。结论：脑心通治疗颈动脉粥样硬化症有效。     

老年人颅脑外伤后缺血性脑卒中发作特点及治疗

目的探讨老年人颅脑外伤后缺血性脑卒中发作特点及个性化治疗方案。方法针对7例颅脑外伤后急性期出现缺血性脑血管病症状的老年患者，通过脑血管造影检查分析其发病原因并根据不同的脑血管特点决定治疗方案。结果大多数患者（6／7）受伤前已存在不同程度的颅内外血管狭窄、血管壁溃疡以及附壁血栓形成等改变，提示脑缺血发作主要与这些病变为基础的脑血流下降、血栓脱落等因素密切相关。而外伤后脑灌注降低、脑血管痉挛是脑缺血发作的诱发因素。结论老年人外伤后的缺血性脑卒中发作主要与原有的脑血管基础疾病有关，预防和治疗老年人外伤后缺血性脑卒中发作，应基于这些病变特征并选择个体化治疗方案。     

新生儿医院感染原因探讨及干预对策

目的：分析新生儿医院感染相关危险因素及干预对策.方法：通过对榆林市第一医院2006年5月至2010年5月收治的1428例住院新生儿医院感染发生情况.结果：新生儿患者医院感染率从2006年5月至2008年5月的3.20%,下降到2008年5月至2010年5月的1.99%.结论：对新生儿室医疗护理工作中各种医院感染相关危险因素采取相应的干预对策后,新生儿患者的医院感染率明显降低,提高了医疗护理质量.     

大肠癌肝转移射频消融后局部复发影响因素的分析

目的 探讨射频消融（radiofrequency ablation,RFA）治疗大肠癌肝转移后局部肿瘤复发的风险因素。方法 回顾性研究213例347个肿瘤实施RFA治疗后局部复发的临床资料,对可能影响RFA局部治疗效果的临床因素进行统计学处理。结果 175例（82.2%）298个肿瘤（85.9%）得到CT或MRI随访资料。大肠癌肝转移灶RFA后肿瘤局部复发率为36.9%（110/298）,局部复发的平均时间为16.4月（2～57个月）。单因素分析显示肝脏转移灶的部位、大小和射频针类型与肿瘤射频后的局部复发相关（P值分别为P=0.000,P=0.021和P=0.026）,但Cox多因素分析则显示只有瘤大小和转移灶部位是大肠癌肝转移射频消融后局部复发的独立预后因素（χ^2=8.522,P=0.000;χ^2=1.321,P=0.022）。结论 肝脏肿瘤的大小和部位是RFA治疗效果的独立影响因素,正确的电极选择和布针是获得肿瘤完全坏死的关键。