化学发光法测定健康成年男性血清CA125的正常参考值

目的:建立健康成年男性血清肿瘤抗原125(CA125)正常参考值范围.方法:采用美国雅培公司生产的全自动化学发光免疫分析仪i2000检测203例健康成年男性血清CA125水平,计算第95百分位数(P95),建立正常参考值范围.结果:血清CA125呈偏态分布.血清CA125中位数为10.3 U/mL,最小值为1.3 U/...     

血清CA125检测在卵巢癌复发中的临床意义

总结和回顾了血清CA125检测在卵巢癌复发中临床应用以来的研究概况和主要成果，并分析了CA125检测在预测卵巢癌复发中存在的问题．     

32例多发性骨髓瘤患者血清肝细胞生长因子水平测定的临床意义

目的:探讨多发性骨髓瘤(MM)患者血清肝细胞生长因子(HGF)水平变化的临床意义。方法:用双抗体夹心酶联免疫吸附法检测32例MM患者的HGF血清水平,观察其变化与多发性骨髓瘤患者贫血、高钙血症、肾功能不全以及β2 微球蛋白的关系。结果:具有较明显的贫血[血红蛋白ρ(Hb) <85g/L]、高钙血症[c(血清钙Ca2 +) >2 982mmol/L]和肾功能损害[c(血清肌酐CRN)≥176 8μmol/L]的MM患者,其血清HGF水平分别比贫血较轻[ρ(Hb)≥85g/L]、高钙血症较轻[c(血Ca2 +)≤2 982mmol/L]以及无明显肾功能损害[c(CRN) <176 8μmol/L]的MM患者明显增高,其差异在统计学上有显著性意义(P值均<0 0 5 )。ρ(血β2 微球蛋白) >4mg/L组的血清HGF水平高于ρ(血β2微球蛋白)≤4mg/L组,其差异在统计学上有非常显著性意义(P <0 0 1)。MM患者年龄、性别与血清HGF无明显关系。结论:MM患者的血清HGF水平与MM患者的贫血程度、高钙血症程度及有无明显肾功能不全等临床表现有关,也与MM患者的血清β2 微球蛋白水平有关。     

62例肝功能异常学龄儿童输血传播病毒的检测结果

目的：分析血丙氨酸氨基转移酶(ALT)升高的学龄儿童(7—12岁)输血传播病毒(TTV)感染情况，并对其致病性及与其它肝炎病毒感染的关系做初步探讨。方法：应用巢式聚合酶链反应技术(Nested PCR)，对62例体检发现ALT升高和75例ALT正常的学龄儿童血标本进行TTV DNA扩增，通过凝胶电泳分离扩增产物；用ELISA方法同时检测甲、乙和丙型肝炎病毒感染的血清标志。结果：ALT升高中，TTV DNA检出率为12．9％(8／62)，其中3例HBsAg同时阳性(4．8％)，1例与抗—HCV同时阳性(1．6％)；ALT正常中，TTV DNA检出率为2．7％(2/75)，两差异具有显性意义(P＜0．05)。结论：肝功能异常学龄儿童存在较高的TTV感染率且有可能致肝功能损害。TTV与肝炎病毒可重叠感染同一儿童。     

血清CA19-9对良、恶性胆道疾病的诊断价值

目的:探讨血清糖类抗原CA19-9对良、恶性胆道疾病的诊断价值.方法:选取确诊的良、恶性胆道疾病患者114例,健康成年人49例,用全自动化学发光免疫分析仪检测血清CA19-9水平,并检测血清中的总胆红素(STB)、直接胆红素(CB)含量.结果:①胆道癌患者血清CA19-9水平明显高于正常对照组、胆囊炎和胆道结石患者(P<0.05);胆道结石黄疸组血清CA19-9水平明显高于无黄疸组、胆囊炎组和正常对照组(P<0.05),显著低于胆道癌患者(P<0.05).②血清CA19-9检测诊断胆道癌的敏感度、特异度和准确度分别是93.75%、66.33%和70.18%.③胆道结石黄疸组患者血清CA19-9水平与STB之间r=0.759(P<0.001),与CB之间r=0.775(P<0.001).结论:血清CA19-9检测是筛查胆道恶性疾病的灵敏指标,但对于伴有黄疸的血清CA19-9阳性患者,应进一步排除良性梗阻性疾病的可能.     

围产窒息儿血清类胰岛素样生长因子－1水平变化及意义

目的 :了解围产窒息存活儿血清类胰岛素样生长因子 - 1(IGF - 1)水平变化规律 ,探讨其与缺氧缺血性脑病的关系。方法 :以围产窒息的足月存活儿为对象 ,根据缺氧缺血性脑病程度分为轻度组和中重度组 ,并以正常足月儿为对照 ,于生后 3d内 (急性期 )和 (14± 3)d(恢复期 )采外周静脉血 ,采取双抗体不平衡的放射免疫分析法进行测定。结果 :围产窒息 (轻、中重度 )存活儿生后 3d内 (急性期 )IGF - 1的含量水平与正常对照组差异无显著性 ,而生后 (14± 3)d(恢复期 )IGF -1明显升高 ,显著高于正常对照组 ,且中重度缺氧缺血性脑病组较轻度组升高更加显著。结论 :IGF- 1在围产期窒息脑损伤修复过程中起重要作用。     

临床完全缓解卵巢上皮性癌CA125界值与预后相关性研究

探讨了临床完全缓解卵巢上皮性癌患者CA125界值与复发的相关性,它关系着卵巢癌患者的预后,可为减少难治性卵巢癌的发生提供参考.     

血清S-100蛋白水平与新生儿脑损伤的关系

目的探讨新生儿缺氧缺血性脑损伤血液中S-100蛋白的变化规律及其与预后的关系.方法新生儿出生后24h内采集血标本1份,检测S-100蛋白含量,1周左右行头颅CT检查.结果影像学检查有阳性与阴性两组血清S100蛋白水平分别为1.24±0.57ug/L、0.51±0.12ug/L,两组差异有统计学意义(P＜0.01),血清S-100水平与出生后1分钟Apgar评分呈负相关.结论S-100蛋白可作为临床早期评价新生儿脑损伤严重程度及预后的敏感指标.     

血清S-100蛋白水平与新生儿脑损伤的关系

目的探讨新生儿缺氧缺血性脑损伤血液中S-100蛋白的变化规律及其与预后的关系。方法新生儿出生后24h内采集血标本1份,检测S-100蛋白含量,1周左右行头颅CT检查。结果影像学检查有阳性与阴性两组血清S100蛋白水平分别为1.24±0.57ug/L、0.51±0.12ug/L,两组差异有统计学意义(P＜0.01),血清S-100水平与出生后1分钟Apgar评分呈负相关。结论S-100蛋白可作为临床早期评价新生儿脑损伤严重程度及预后的敏感指标。     

血清S-100蛋白水平与新生儿脑损伤的关系

目的探讨新生儿缺氧缺血性脑损伤血液中S-100蛋白的变化规律及其与预后的关系.方法新生儿出生后24h内采集血标本1份,检测S-100蛋白含量,1周左右行头颅CT检查.结果影像学检查有阳性与阴性两组血清S100蛋白水平分别为1.24±0.57ug/L、0.51±0.12ug/L,两组差异有统计学意义(P＜0.01),血清S-100水平与出生后1分钟Apgar评分呈负相关.结论S-100蛋白可作为临床早期评价新生儿脑损伤严重程度及预后的敏感指标.     

胃溃疡性病变与血清胃蛋白酶原水平的关系

测定97例溃疡型胃癌(GC)和135例胃溃疡(GU)患者的血清PG水平,并与39例胃黏膜基本正常者(NOR)作对比分析.血清PGⅠ水平在GU和GC组明显低于NOR组(P均＜0.01),而GC组又明显低于GU组(P＜0.01);PGⅡ在GC组明显低于NOR组(P＜0.05);PGⅠ/PGⅡ值GC组明显低于NOR组和GU组(P均＜0.01).胃底胃体癌患者血清PGⅠ水平明显低于贲门癌患者(P＜0.05).提示血清PGⅠ水平和PGⅠ/PGⅡ值降低是溃疡型GC的危险因素,检测血清PG水平有助于临床对胃良恶性溃疡的鉴别诊断.     

用变频器改造实验室CA6140车床的方法

为满足学校实验需要，采用变频器对CA6140车床主拖动系统进行改造。文中介绍了电气线路改造方案，变频器接线方案、参数设置，以及改造后主轴转速调整与计算方法。实践证明，该改造方法适合学校实验室的实际情况，教学实验更直观，教学效果也随之提高。     

A hapten-specific chimaeric IgE antibody with human physiological effector function

Immunoglobulin E (IgE) has a central role in allergic reactions although it rarely exceeds 5 micrograms ml-1 even in the serum of severely allergic individuals. Both mast cells and basophils possess receptors which bind the Fc portion of IgE with high affinity; crosslinking of membrane-bound IgE by allergen results in degranulation of the cell and release of a variety of pharmacologically active mediator including histamine. Myeloma IgE has been successfully used to block the skin sensitizing activity of allergic sera; however, human myeloma IgE is clearly in limited supply. The emergence of techniques allowing the stable introduction of immunoglobulin gene DNA into myeloma cells has allowed us to construct a mouse cell line that secretes a chimaeric IgE, lambda 1 antibody whose heavy chain is composed of a human C epsilon constant region fused to a mouse variable (VH) region. This chimaeric IgE is specific for the hapten 4-hydroxy-3-nitro-phenacetyl (NP) and can, when crosslinked by antigen, trigger the degranulation of human basophils. When not crosslinked, however, the chimaeric IgE can prevent the passive sensitization of these cells by sera from allergic subjects.     

A research on the relationship between ejaculation and serum testosterone level in men

The purpose of this study is to gain understanding of the relationship between ejaculation and serum testosterone level in men. The serum testosterone concentrations of 28 volunteers were investigated daily during abstinence periods after ejaculation for two phases. The authors found that the fluctuations of testosterone levels from the 2nd to 5th day of abstinence were minimal. On the 7th day of abstinence, however, a clear peak of serum testosterone appeared, reaching 145.7% of the baseline ( P < 0.01). No regular fluctuation was observed following continuous abstinence after the peak. Ejaculation is the precondition and beginning of the special periodic serum testosterone level variations, which would not occur without ejaculation. The results showed that ejaculation-caused variations were characterized by a peak on the 7th day of abstinence; and that the effective time of an ejaculation is 7 days minimum. These data are the first to document the phenomenon of the periodic change in serum testosterone level; the correlation between ejaculation and periodic change in the serum testosterone level, and the pattern and characteristics of the periodic change.