系统性红斑狼疮女性患者血清CA125,CA199化学发光法测定的临床应用

目的 :探讨系统性红斑狼疮 (SLE)女性患者血清肿瘤标志物CA12 5 ,CA199含量变化及临床意义。方法 :用化学发光法测定 30例正常女性和 38例SLE女性患者血清中CA12 5 ,CA199含量。结果 :正常组CA12 5含量为 11.14± 6 .4 8U/ml,CA199含量为 3.75± 2 .89U/ml;SLE组CA12 5 ,CA199分别为 2 2 .5 6± 2 0 .4 6U/ml,9.5 7± 9.34U/ml。SLE患者CA12 5 ,CA199阳性率分别为 2 1.1% ,7.89%。结论 :SLE患者血清CAl2 5 ,CA199含量较正常组增高 (P <0 .0 5 )。CA12 5 ,CA199在SLE女性患者中可出现阳性 ,对临床诊断SLE有一定价值。     

MRI在颅内生殖细胞瘤诊断中的作用

目的：探讨MRI对颅内生殖细胞瘤的诊断价值。方法：对19例经手术和病理证实的颅内生殖细胞瘤患者的MR表现进行分析。结果：19例中，10例位于鞍区，其中男性5例，女性5例，6例位于松果体区，3例位于丘脑基底节区，均男性，其MR表现为（1）T2WI等或稍低信号，T2WI等或销高信号，鞍区和松果体区肿瘤无水肿，丘脑基底节区肿瘤轻至中度水肿和占位效应；（2）Gd-DTPA增强扫描肿瘤呈不均匀或均匀明显强化。结论：MRI的多轴位成像及Gd-DTPA应用有助于颅内生殖细胞瘤的诊断与鉴别诊断；病人性别，发病年龄和肿瘤部位，大小、形态及信号强度具有一定的特点，在多数情况下是可以做出术前诊断的。     

甲醛固定源同种异体骨移植材料的体外实验研究

OBJECTIVE: To conduct an in vitro study to assess the preliminary possibility of using formalin-fixed, instead of fresh, human bone tissues for allografting. METHODS: Fresh cadaveric bone tissues were fixed by formalin for more than 6 months and dissected into 5 mmx5 mmx5 mm pieces and 5 mmx5 mmx40 mm sticks, followed by chemical treatments to prepare the allograft bone materials. When alls treatments were completed, the bone grafts were centrifuged and their properties and cellular compatibility assessed in comparison with the currently used bone grafts clinically. RESULTS: The residual formaldehyde of the fixed allograft bone material was much below the controlled level and no significant differences were noted between the bone graft materials tested in regard to the chemical and mechanical properties and biocompatibility. CONCLUSION: This material we have prepared may meet the clinical demands for bone grafting, with good biocompatibility and less chance for infection by pathological agents.     

宫颈鳞癌中erbB3、erbB4基因蛋白表达与细胞凋亡和增殖的相关性研究

目的　探讨原癌基因erbB3、erbB4与细胞凋亡和增殖的关系 ,为该基因作用机制提供新线索。方法　分别采用免疫组化、DNA末端标记技术 (TUNEL法 )和HE染色检测 5 0例宫颈鳞癌中erbB3、erbB4基因蛋白表达及凋亡指数 (AI)和增殖指数 (MI)。结果　宫颈鳞癌中erbB3、erbB4表达率分别为 5 2 .5 %、44 .0 % ,AI、MI值分别为 5 .5 0± 4.10和 4.18± 3 .63 ,随着宫颈癌恶性程度增高、FIGO分期进展、肿瘤体积的增大和淋巴结转移组 ,erbB3、erbB4表达率增加 ,AI、MI值也增高 ,但差异仅在分化程度上有显著性 (P <0 .0 5 )。双变量相关分析显示erbB3、erbB4表达与AI、MI间无相关性 (r3=0 .10 98、0 .12 3 6,r4 =0 .2 15 1、0 .2 5 5 8,P >0 .0 5 )。结论　erbB3、erbB4和AI、MI预示着宫颈癌恶性潜能 ,但不能作为预后有用指标。erbB3、erbB4的作用机制可能不是通过细胞凋亡或增殖起作用     

重症急性胰腺炎大鼠肺组织中LIF的表达变化及意义

目的:观察重症急性胰腺炎(SAP)大鼠白血病抑制因子(LIF)在肺组织中表达的时相变化, 探讨LIF在SAP病程及肺损伤中的意义．方法:36只♂SD大鼠随机分为正常对照组(N 组,n=6)、假手术组(Sham组,n=6)和重症急性胰腺炎组(SAP组,n=24)．采用胰管逆行灌注50 g/L牛磺胆酸钠的方法复制大鼠SAP模型．用RT-PCR法检测肺组织中LIF mRNA的表达水平,免疫组织化学方法检测NLIF在肺组织中的表达变化．结果:SAP组3 h后肺组织LIF mRNA的表达量明显高于对照组和假手术组(灰度值:1．018± 0．065 vs 1．451±0．067,1．322±0．072,P<0,05), 并且6,12,24 h持续升高(0．853±0．058,0．635 ±0．064,0．582±0．089)(P<0．01)．同样,SAP组 LIF蛋白表达在3和6 h后明显高于对照组和假手术(127．36±2．76,122．53±2．43 vs 159．46 ±2．78,156．35±3．12,P<0．05),并且12,24 h后也维持在很高的水平(109．37±2．87,102．42± 2．27)．结论:LIF作为促炎症因子参与了SAP肺组织的炎症反应．     

STUDIES ON NUTRITION AND PRECANCEROUS LESIONS OF THE ESOPHAGUS IN THE ADOLESCENTS

This paper reports the prevalence of chronic esophagitis and nutritional status among 538 young persons aged 15 to 26 years from the high risk area for esophageal cancer. Of these subjects, 166 were from households with history of esophageal cancer and 372 were from households without history of esophageal cancer. The Incidences of chronic esophagltis among male and female adolescents were 37. 6% and 36% respectively, which was significantly higher than those in the low risk area (17%). The frequency of chronic esophagltis in the adolescents in the households with history of esophageal cancer was aiso higher than in those In the households without history of esophageal cancer. The deficiencies of vitamins, especially of riboflavin and ascorbate, are prevalent and severe among these adolescents. Ascorbate deficiency Is correlated with the severity of the chronic esophagltis. These results indicate that chronic esophagltis may be involved in the natural history of esophageal carclnogenesis. Nutrient defic     

人头发自由基检测在口腔颌面部恶性肿瘤诊断中的意义

作者应用电子自旋共振技术（ＥＳＲ）分别对正常人、口腔颌面部良恶性肿瘤、口腔粘膜病患者共３２４例的头发进行自由基测定，并与病理诊断相对照。结果表明，它们的阳性率分别为５．９％，６．１％，８４．５２％及９．１％。其中恶性肿瘤与正常人及良性肿瘤相比较，差别均较显著（Ｐ＜０．０１）。部分恶性肿瘤患者经治疗后，ＥＳＲ饱和功率点后移，上升到临界水准以上（＞１０．０ｍＷ），ＥＳＲ转阴。表明用ＥＳＲ早期诊断恶性肿瘤、追踪疗效具有一定临床价值。作者还结合检测资料对ＥＳＲ在监测肿瘤复发、监视白斑癌变等方面的意义进行了讨论。     

原发性干燥综合征与人类组织相容性抗原—DRβ基因

原发性干燥综合征（ＰＳＳ）的病因未明，其中可能涉及遗传因素。用序列特异性引物聚合酶链反应（ＰＣＲ－ＳＳＰ）法对７０例ＰＳＳ患者和１３６名正常人进行人类组织相容性抗原（ＨＬＡ）－ＤＲβ基因分型。发现ＰＳＳ患者群体的ＨＬＡ－ＤＲ３、ＤＲ５２及ＤＲ２的基因频率明显高于正常对照组，而ＨＬＡ－ＤＲ５及ＤＲ９的基因频率则相反，提示ＰＳＳ的发病与ＤＲ３、ＤＲ５２及ＤＲ２呈正相关；而和ＤＲ９、ＤＲ５呈负相关。２个ＰＳＳ患者家族的姐妹与患者具有相同的遗传因素，且和ＰＳＳ患者群体测定的正相关基因相一致。ＰＳＳ患者的主要自身抗体（抗ＳＳＡ抗体及抗ＳＳＢ抗体）与ＨＬＡ－ＤＲ５２之间有明显的相关性，因而表明ＰＳＳ的发病和遗传因素有关。