抗O型口蹄疫病毒单克隆抗体相对亲和力的测定

目的:对3株O型口蹄疫病毒单克隆抗体(4A9、4C3、9F12)的相对亲和力进行测定.方法:用纯化的O型口蹄疫病毒作为包被抗原建立一种检测方法,将3株单克隆抗体(4A9、4C3、9F12)制备腹水并纯化,并用建立的检测方法测定3株单克隆抗体(4A9、4C3、9F12)的相对亲和力.结果:检测方法中抗原、酶标抗体的最佳稀释度分别为1∶800和1∶10 000,单抗的相对亲和力分别为:4A9约在5.242 μg/ml(1∶600),4C3约在0.763 μg/ml(1∶5 000),9F12约在0.127 μg/ml(1∶40 000),即9F12＞4C3＞4A9.结论:用建立的ELISA方法测定了3株O型口蹄疫病毒单克隆抗体(4A9、4C3、9F12)的相对亲和力,将为进一步研究口蹄疫病毒而选取合适的单抗提供理论依据.     

钙离子结合蛋白S100A9在乳腺癌中表达及临床意义

目的:探讨钙离子结合蛋白S100A9在乳腺癌患者中的表达及临床意义。方法:选取39例乳腺癌患者术前、15例术后血清及10例健康女性血清,12例手术切除肿瘤组织标本,应用ELISA检测乳腺癌患者血清S100A9水平,采用免疫组织化学方法检测乳腺癌组织中S100A9的表达,分析S100A9表达与临床病理特征的关系。结果:S100A9在乳腺癌组患者血清中表达水平高于健康组(P<0.01),有淋巴结转移乳腺癌组血清S100A9表达水平高于无淋巴结组(P<0.01),乳腺癌患者术后S100A9血清表达水平降低(P<0.01)。乳腺癌患者血清中S100A9水平与患者年龄、肿瘤最大径、组织学分级和病理类型有关(P<0.01)。S100A9在乳腺癌组织中表达明显高于癌旁正常组织。结论:S100A9表达水平在乳腺癌血清和组织中明显升高,表明S100A9可作为乳腺癌患者诊断和疗效观察指标。     

《现代临床医学生物工程学杂志》主题索引2003年(1～6期)总目录

(按汉语拼音字母顺序排列 )D调查研究地氟病区阶段改水后氟斑牙患病情况调查　 (翁兵等 ) 9(4 ) :348.关于女子大学生骨盐量对MBI影响的研究　 (肖国强等 ) 9(5 ) :4 0 7.1998～ 2 0 0 2年广州地区儿童B型流感病毒亚型监测　 (谢健屏 ) 9(5 ) :4 2 0 .医护人员营养学知识现状调查　 (钟淑婷等 ) 9(6 ) :5 10 .珠海市无偿及有偿献血者梅毒检测情况比较　 (沈奇荣 ) 9(6 ) :5 17.F分子生物学、基因、遗传广西眼镜王蛇毒酸性磷脂酶A2 - 1的表达　 (舒雨雁等 ) 9(1) :1.HBsAg真核表达质粒的构建和鉴定　 (杜志强等 ) 9(1) :9.α1-抗糜蛋白酶…     

蛋白磷酸酯酶2A通过MAPK信号通路抑制宫颈癌细胞侵袭

目的:探讨蛋白磷酸酯酶2A(PP2A)在宫颈癌细胞侵袭中的作用及其可能机制。方法:常规培养Hela细胞,通过药物或基因调节PP2A水平,药物实验中将Hela细胞分为3组,即正常对照组(DMSO处理,n=6)、DES组(10nM PP2A激动剂DES处理,n=6)和OA组(10nM PP2A抑制剂OA处理,n=6);质粒转染组中将Hela细胞分为对照组(DsRed组,n=6)、wtPP2A组(n=6)和siPP2A组(n=6),按分组要求转染相应质粒。采用小室穿孔实验观察其对Hela细胞侵袭的影响;蛋白免疫印迹实验(Western Blot)观察其对MAPK信号通路的作用。结果:研究发现上调PP2A可显著抑制Hela细胞侵袭,而下调PP2A则显著促进Hela细胞侵袭;激活PP2A可去磷酸化丝裂原激活的蛋白激酶家族(p-JNK, p-p38和p-ERK MAPK)及金属蛋白酶9(MMP-9)。结论:PP2A可能通过去磷酸化MAPK信号通路下调MMP-9起调节宫颈癌细胞侵袭的作用。     

医院与家庭结合ABA疗法对自闭症谱系障碍患儿的语言发育水平分析

目的:探讨采用医院同家庭结合应用行为分析法(Applied behavior analysis,ABA)对自闭症谱系障碍患儿进行治疗后获得的临床效果。方法:将我院2017年06月收治的18例患儿作为研究对象,根据接受的治疗不同进行分组。观察组(A1组,n=9)患儿采用语言训练、感觉统合训练联合医院与家庭结合的ABA疗法进行干预,并对家长进行每周一次的自闭症谱系障碍的宣传教育和将ABA疗法用于家庭的方法指导。对照组(A2组,n=9)患儿采用语言训练、感觉统合训练。治疗一年半后,采用S-S语言发育迟缓评估法对两组患儿语言发育水平进行评价。结果:观察组(A1组)语言发育水平的改善明显优于A2组患儿(P0.05)。结论:对于自闭症谱系障碍患儿,临床选择医院与家庭结合ABA疗法进行干预,能明显改善患儿的语言发育水平,显著提高患儿的生活质量。     

SOX9、结缔组织生长因子促进腱骨结合处愈合的生物力学研究

目的:观察SRY相关高迁移组box基因9(SOX9)及结缔组织生长因子(CTGF)在促进腱骨结合处愈合的生物力学作用。方法:36只成年新西兰大白兔随机分为A、B、C共3组,每组12只。其中A组为SOX9组:使用SOX9注射腱骨结点处;B组为CTGF组:使用CTGF注射腱骨结点处;C组为单纯对照组。三组动物均行动物试验并分别于术后4周、8周及12周行生物力学测定,统计学分析结果。结果:术后4周、12周,A、B组的横截面积均低于C组,组间对比有统计学差异(P<0.05)。术后4周、8周、12周,A、B组的拉断负荷及极限拉应力均高于C组,组间对比有统计学差异(P<0.05)。结论:SOX9以及CTGF组能够促进腱骨结合处的早期愈合,并能够增加其生物力学强度。     

血浆前蛋白转化酶枯草溶菌素9 与钙化性主动脉瓣疾病的关联机制

目的:探讨血浆前蛋白转化酶枯草溶菌素9(PCSK9)与钙化性主动脉瓣疾病(CAVD)的相关性。方法:经心脏彩超筛选CAVD 患者120 例及阴性对照组患者40 例,通过CT 定量评分系统分4 组:AVC 1、2、3 和4 级,并通过软件计算主动脉瓣钙化积分。检测血浆总胆固醇(TC)、低密度脂蛋白胆固醇(LDL-C)、高密度脂蛋白胆固醇(HDL-C)、三酰甘油(TG)、载脂蛋白A1(Apo A1)及载脂蛋白B(Apo B)、脂蛋白(a){LP(a)}和高敏C 反应蛋白(hsCRP)水平以及PCSK9 水平。结果:4组患者LDL-C、Apo B 和Lp(a) 水平差异有显著性(P<0.05),AVC2-4 级患者明显高于AVC1 级,而TG、HDL-C、apo A1 和hsCRP 组间差异无统计学意义。AVC3 级和AVC 4 级的TC 水平高于AVC1 组(P<0.05)。同时,AVC2-4 组血浆PCSK9 水平高于AVC1 组(P<0.05)。将所有人群的主动脉瓣钙化积分与TC(r =0.248,P =0.026),LDL-C (r =0.222,P =0.048),Lp(a)(r =0.276,P =0.013),Apo A1(r =0.245,P =0.012),Apo B(r =0.212,P =0.019)和PCSK9(r =0.309,P =0.005)均存在明显相关性,ApoA1,Apo B 呈正相关。结论:CAVD 患者PCSK9 水平明显高于对照组,PCSK9 与CAVD 的发生存在相关性。     

Aβ_(1-42)诱导的小胶质细胞炎性反应对神经元细胞Mecp2蛋白表达的影响

目的:体外研究Aβ_(1-42)诱导的小胶质细胞炎症反应对海马神经元细胞甲基化Cp G结合蛋白(Mecp2)表达的影响。方法:(1)用不同浓度的Aβ_(1-42)(终浓度分别为0,5,10,20,30μmol/L)处理小胶质细胞系(N9),24h后取上清液,ELISA检测每组N9细胞培养上清中炎症因子TNF-α、IL-1β的含量,选择合适的Aβ_(1-42)的终浓度。(2)用Aβ_(1-42)(终浓度为20μmol/L)及TLR4拮抗剂TAK-242(终浓度为1μg/ml)处理小胶质细胞系(N9),分为3组:正常对照组(con组)、单纯Aβ_(1-42)处理组(Aβ_(1-42)组)、Aβ_(1-42)处理后TAK-242干预组(TAK-242组)。24 h后取上清液,ELISA检测每组N9细胞培养上清中炎症因子TNF-α、IL-1β的含量。(3)实验分组同(2),24 h后收集培养液,分别干预生长良好的海马神经元细胞系(HT-22)。24 h后,通过Western Blot、免疫荧光染色方法检测每组HT-22细胞中Mecp2蛋白的表达。结果:(1)ELISA结果显示:与con组相比,Aβ_(1-42)处理后,N9细胞分泌的TNF-α、IL-1β的表达量随Aβ_(1-42)浓度的增加而增加(P0.05)。(2)ELISA结果显示:与con组相比,Aβ_(1-42)组的TNF-α、IL-1β的表达水平明显提高(P0.05);TAK-242组的细胞分泌TNF-α、IL-1β水平较Aβ_(1-42)组显著降低(P0.05)。(3)Western Blot结果显示:与con组相比,Aβ_(1-42)组HT-22细胞中Mecp2蛋白表达明显增加(P0.05);与Aβ_(1-42)组相比,TAK-242组HT-22细胞中Mecp2蛋白表达明显减少(P0.05)。(4)免疫荧光染色结果显示:与con组相比,Aβ_(1-42)组HT-22细胞中Mecp2蛋白表达明显增强;而与Aβ_(1-42)组相比,TAK-242组HT-22细胞中Mecp2蛋白表达减弱。结论:Aβ诱导的小胶质细胞发生炎性反应,导致神经元的损伤,可能是由于这种炎性反应使得神经元细胞中Mecp2蛋白的表达量增加,从而损伤神经元。     

丹参酮ⅡA通过AMPK介导的自噬减轻阿霉素所致H9c2心肌细胞损伤

目的:探讨丹参酮ⅡA对阿霉素(又称多柔比星)所致大鼠H9c2心肌细胞损伤的影响和机制。方法:以H9c2细胞为研究对象,在有或无AMPK抑制剂dorsomorphin处理下,采用丹参酮ⅡA和(或)阿霉素处理H9c2细胞,应用CCK-8法测定细胞活力,LDH法测定细胞损伤情况,免疫荧光实验分析细胞自噬情况,Western blot检测细胞AMPK的活化情况。结果:与对照组相比,阿霉素处理后H9c2细胞的活力减弱,LDH释放增多,自噬增加,AMPK的活化受抑制(P0.05);与阿霉素组相比,加用丹参酮ⅡA联合处理能部分恢复H9c2细胞的活力,减少LDH释放,进一步增加自噬,促进AMPK活化(P0.05);AMPK抑制剂dorsomorphin处理后,丹参酮ⅡA恢复H9c2细胞活力、减少LDH释放和促进自噬的作用减弱(P0.05)。结论:丹参酮ⅡA能减轻阿霉素所致H9c2心肌细胞的损伤,其机制可能与激活AMPK介导的自噬有关。本研究为临床上应用丹参酮ⅡA防治阿霉素心肌损伤提供实验基础和理论依据。     

S100A9激活NF-кB促进小胶质细胞TLR7表达和炎症因子释放

目的:S100钙结合蛋白A9(S100A9)激活核因子κB(NF-κB)促进小胶质细胞toll样受体7(TLR7)的表达和炎症因子释放的作用及其机制研究。方法:CCK-8实验检测BV2小胶质细胞的增殖率;转录组测序并结合GO分析、KEGG富集分析和STRING数据库对差异基因(DEGs)进行比对并从差异表达基因中筛选出目标基因;Real time RT-PCR验证TLR7的表达;免疫荧光染色检测CD68、CD206的表达;Western Blot检测CD68、CD206、TLR7、p65、p-p65的表达;ELISA检测白细胞介素-6(IL-6)和肿瘤坏死因子-α(TNF-α)的表达。结果:中等浓度的S100A9对小胶质细胞无增殖抑制效应;实验组CD68蛋白的表达水平较对照组明显增加,而CD206蛋白的表达水平明显下降,提示S100A9促进BV2小胶质细胞向促炎型激活;Toll样受体4(TLR4)的抑制剂TAK-242明显抑制S100A9刺激BV2小胶质细胞后TNF-α和IL-6的表达水平;TLR4/NF-κB通路激活促进TLR7蛋白表达。结论:中等浓度的S100A9可以促进小胶质细胞...     

Carcinomas with identical and with different specific antigens

Summary Immunological investigations demonstrated that certain human malignant neoplasms possess similar specific antigenic and immunogenic properties. On the other hand, there are tumors which have qualitatively different specific antigens. The immunological group to which the tumor belongs is not connected with localization of the tumor, its structure or blood group.Presented by Active Member of the AMN SSSR N. N. Zhukov-Verezhnikov     

Infectious diseases and immunological markers associated with patients with non-Hodgkin lymphoma treated with rituximab

Background: The use of rituximab (RTX) is increasing, even in developing countries. It has become the first-line therapy or adjuvant to chemotherapy (CHOP; cyclophosphamide, hydroxydaunorubicin, oncovin and prednisone) for various diseases, including B cell lymphoma and autoimmune diseases.

Aim: We describe the infectious diseases and immunological markers associated with RTX treatment of patients with non-Hodgkin lymphoma (NHL).

Methods: Serum immunoglobulins were determined before and after intravenous immunoglobulin (IVIg) administration. Pneumo-23IgG-specific anti-pneumococcal antibodies were evaluated before and after vaccination. Immunophenotyping and lymphocyte proliferation were determined in the course of the treatment.

Results: Seven patients were followed and median age was 56.0?±?5.0?years (range, 41.9–71.6?years). At baseline, the mean level of IgG was 333.7?±?40.8?and IgM 40.9?±?11.3?mg/dL, respectively; immunoglobulin A and E (IgA and IgE) were under the limit of detection. Two patients had reduced or absent B cells and T cell subsets were at normal levels in five patients. All patients failed to mount an efficient post-vaccination immune response against hepatitis B virus, tetanus, diphtheria and against the 23-valent pneumococcal polysaccharide vaccine. During RTX/CHOP treatment, human-IgG-immunoglobulin (IVIg) therapy was introduced in six patients after recurrent infections, including community-acquired pneumonia (85.7%), chronic sinusitis (85.7%) and gastroenteritis (42.9%).

Conclusion: Poor response against pneumococcal vaccines increases the susceptibility of respiratory diseases in these patients. In patients with NHL treated with RTX, the benefits achieved with IVIg replacement for the control of recurrent infectious diseases is of paramount importance. Clinicians dealing with monoclonal antibodies against cancer therapy, especially RTX, should be aware of the increasing risks for symptomatic induced hypogammaglobulinemia and respiratory infections.     

Tolerance and rebound with zafirlukast in patients with persistent asthma

Background  

The potential for tolerance to develop to zafirlukast, a cysteinyl leukotriene (CysLT) receptor antagonist (LRA) in persistent asthma, has not been specifically examined.     

伊痛舒运用于颈源性头痛的治疗及护理

颈源性头痛好发于中老年或长期处于工作紧张状态的电脑工作及文字工作者,已成为疼痛门诊中的常见病种,其病因较为繁杂.随着对头痛不断研究,越来越多的学者发现,颈部疾病可以导致头痛,颈源性头痛在头痛人群中与偏头痛相近,大约为17.18%[1-2].我科采用伊痛舒及香丹注射液行颈2椎旁神经组滞治疗该病,取得了良好的疗效.现报告如下.     

Coinfection with hepatitis C and B viruses with pre-C mutant

We report on a case of co-infection VHB-VHC with a pre-core mutant, a rare association in the literature. The last consensus conference in march 2002 did not help us so much, since only VHC-VIH co-infection was considered. We report on our therapeutic experience about the treatment and discuss the recent studies aimed to define the function of respective virus in the case of co-infection. In the present case, the VHC infection has been completely cured, but some problems with the VHB infection are still unsolved.