T淋巴细胞核仁组成区嗜银蛋白测定对判断肿瘤细胞分化程度的意义

目的 :探讨外周血T淋巴细胞核仁区嗜银蛋白 (Ag NoRs)测定对判断肿瘤细胞分化程度的意义。方法 :5 0例健康查体者 ,63例经手术后病理证实且经病理组织细胞学分型的恶性肿瘤患者。根据其病理分型 ,分为低分化组 ( 2 3例 )、中分化组 ( 2 1例 )和高分化组 ( 19例 )。取静脉血 0 5mL(肿瘤患者均在术前 3d取血 ) ,经培养、制片、银染、图象分析 4个步骤 ,以T淋巴细胞核仁银染面积与细胞核面积比值 (I S %值 )作为Ag NoRs的检测指标。结果 :健康组与恶性肿瘤组I S %均值分别为 7 2 3± 0 4 5、4 5 2± 0 2 5 ;二者比较差异有显著意义 ,P <0 0 5。在肿瘤患者中 ,低分化组、中分化组、高分化组 1 S %均值分别为 2 76± 0 13、4 82± 0 35、5 2 1± 0 2 3,经统计学分析 ,低分化组外周血T淋巴细胞Ag NoRs含量明显低于中、高分化组。结论 :外周血T淋巴细胞Ag NoRs测定不仅对诊断肿瘤具有重要意义 ,对判断肿瘤细胞分化程度也具有重要参考价值     

Electrophoretic patterns of spermatozoal nucleoproteins (NP) in fertile men and infertility patients and comparison with NP of somatic cells

During spermatogenesis in mammals the evolutionary early histones are replaced step by step by more species specific nucleoproteins (protamines). The protamines protect the genetic information of the male against mutagenic or other damaging influences and possibly play a role in male fertility. A method was presented to study the nucleoproteins (NP) of single human ejaculates. This procedure was checked concerning its usability and validity by bull spermatozoa. The NP of cryopreserved human spermatozoa of fertile men and of infertility patients were investigated and compared with the electrophoretic patterns of NP of somatic hepatocytes of rat and mouse. A total of 48 semen samples were studied. Ten of these samples were obtained from semen donors of proven fertility and 38 samples were collected from male partners of infertile couples. Photodensitometrically it could be distinguished between percentages of non-protamines (PNP) and percentages of protamines (PP). The PP varied intra-individually with a mean standard deviation of 34%, analogously to the alterations of classical semen parameters. The PP of fertile men did not significantly differ from the infertility patients with normal spermiogram parameters but showed a significantly higher value compared with the semen samples with pathological spermiograms. On average the PP of all infertile patients were significantly lower than the PP of fertile semen donors.     

Binding of antibodies to nonhistone nucleoproteins on keratinocytes in suspensions

Summary Antibody binding on the cell surface of epidermal cells, recently established on cultured neonatal foreskin cells, is supposed to play a role in the pathogenesis of in vivo antinuclear antibodies (ANA) of the skin. To study this phenomenon in suspensions of adult human keratinocytes, a cell system more closely related to the in vivo situation, we investigated the binding capacity of nine sera with various antibody profiles against nuclear components, as well as a murine monoclonal Sm-antibody. It was found that sera containing antibodies against nonhistone nucleoproteins bound to the cell surface of keratinocytes, whereas monospecific anti-dsDNA sera and the murine anti-Sm serum did not. This binding was found in both basal and suprabasal keratinocytes. The percentage of cells showing antibody binding was not significantly enhanced by preirradiation with ultraviolet light, as was found in a previously study. The cell surface binding is probably an antigen-antibody binding and not the result of cross-reactivity. Such cell surface binding may be important for the formation of in vivo ANA in the skin.     

IgA肾病肾组织纤连蛋白的表达

目的：探讨肾组织纤连蛋白的表达在ＩｇＡ肾病（ＩｇＡＮ）进展中的病理学及临床意义。方法：运用Ｓ－Ｐ法对６０例ＩｇＡＮ的肾活检标本进行纤连蛋白（ＦＮ）、增殖细胞核抗原（ＰＣＮＡ）的免疫组化染色，并与肾小球及肾小管间质损伤程度相对照，进行统计学处理。结果：肾小球系膜区ＦＮ与系膜细胞增生、肾小球损伤程度及肾小管间质损伤程度均呈正相关。基膜ＦＮ的出现与基膜内皮下沉着物、肾小球损伤程度及肾小管间质损伤程度均密切相关。结论：肾小球系膜区ＦＮ可作为肾活检组织病理中肾小球系膜的标志，尤其是基膜ＦＮ的聚集增多，是判断ＩｇＡＮ进展和预后不良的可靠指标     

异质性核糖核蛋白在肺癌诊断中的价值

选取肺癌、肺良性病变患者痰液标本180份(肺癌、肺良性病变各90例),经S液固定、DTT溶液解黏、涂片后,用ABC法以异质性核糖核蛋白(hnRNPA2/B1)抗体作细胞免疫组化染色,对比肺癌组与非癌组(良性肺病变)染色情况。另从我院同期确诊的肺癌患者中随机抽取90例,对比hnRNPA2/B1抗体检测与痰细胞学联合纤支镜活检、刷检诊断肺癌的阳性率。结果:hnRNPA2/B1在肺癌组阳性表达率为47.7%,特异性82.2%,与非癌组(17.8%)相比,差异有统计学意义,P<0.005。与痰细胞病理学联合纤支镜活检、刷检阳性率(45%)相比,差异无统计学意义,P>0.05。初步研究结果提示,hnRNPA2/B1在肺癌的诊断中有一定的参考价值,其阳性率接近于痰细胞学联合纤支镜活检、刷检的阳性率。     

胰腺癌组织nm23-H1和PCNA的表达和其临床意义

目的研究胰腺癌组织中 nm23-H1 和增殖细胞核抗原(PCNA)的表达与生物学行为及预后之间的关系.方法用免疫组织化学方法(SABC)对39例胰腺导管癌nm23-H1基因和PCNA的表达进行检测.结果39例胰腺导管癌中nm23-H1基因蛋白的表达率为66.67%,PCNA平均增殖指数为27.5±16.4;nm23-H1的表达与组织学分级有关,P＜0.05,而与临床分期关系不大,P＞0.05;PCNA增殖指数与组织学分级和临床分期有关,P＜0.01;nm23-H1和PCNA与淋巴结转移呈正相关;nm23-H1的高表达与肿瘤细胞的高增殖状态有关,P＜0.01;nm23-Hl和PCNA的高表达均与患者的预后差密切相关,P＜0.05和P＜0.01.结论nm23-H1和PCNA是反映胰腺癌生物学行为和预后的重要指标.     

AgNOR图像定量分析在角结膜缘上皮良,恶性病变中的诊断价值

目的：探讨ＡｇＮＯＲ图像定量分析对角结膜缘上皮良、恶性病变的鉴别诊断价值。方法：应用真彩色图像分析技术对角结膜缘上皮良、恶性病变（其中上皮增生１９例，不典型增生６例，原位癌１４例，鳞状细胞癌１２例）细胞核内ＡｇＮＯＲ进行了定量测定。结果：在不同的病变中，细胞核内ＡｇＮＯＲ颗粒的分布形态、大小及所占平均面积均存在明显差异，且与病变的良、恶性及细胞的分化程度有密切关系。结论：提示ＡｇＮＯＲ图像定量分析对角结膜缘上皮良、恶性病变的鉴别诊断、进一步了解不同病变组织细胞的增殖活性和分化程度提供了一种新的定量指标     

HCV C区基因在SP2/0细胞及荷瘤小鼠瘤内的表达

目的 观察HCVC区基因在SP2/0细胞及荷瘤小鼠瘤内的表达情况。方法 构建pEF-HCVC重组质粒，转染SP2/0细胞，经G418进行筛选，建立稳定转染pEF-HCVC的SP2/0细胞系，并将转染后的SP2/0细胞接种于BALB/c小鼠皮下产生浆细胞瘤。结果 用斑点杂交方法检测转染后的细胞，有HCVmRNA，免疫组化检测瞬时转染以及稳定转染的SP2/0细胞涂片均发现存在有阳性信号，另外，对瘤组织进行免疫组化检测，发现有HCVC蛋白表达。结论 pEF-HCVC重组质粒可以在SP2/0细胞中长期稳定表达。也可以在BALB/c小鼠浆细胞瘤内表达。     

PCNA和Ki67抗原与喉癌的相关性研究

目的 :探讨增殖细胞核抗原 (PCNA)和Ki6 7抗原表达与喉癌临床病理及预后的关系。方法 :采用流式细胞免疫法检测 4 0例喉鳞状细胞癌患者 (声门上型 13例 ,声门型 2 7例 )PCNA和Ki6 7抗原表达 ,同时检测 12例癌旁正常组织作为对照组。结果 :癌组织与癌旁组织间PCNA和Ki6 7表达差异有极显著意义 ,P <0 0 0 1;高、中分化鳞癌与低分化鳞癌间差异有极显著意义 ,P <0 0 1;淋巴结转移阳性组与阴性组间差异有显著意义 ,P <0 0 5 ;无复发生存组与复发、死亡组间差异有显著意义 ,P <0 0 5 ;早期组 (Ⅰ、Ⅱ )与晚期组 (Ⅲ、Ⅳ )间差异无显著意义 ,P >0 0 5。结论 :PCNA和Ki6 7抗原表达与喉癌的病理分级和淋巴结转移呈显著正相关 ,与临床分期无关 ,两参数高表达是喉癌重要生物学特征。     

PAM14缺失突变体在哺乳动物细胞中的表达和定位

目的 构建带HA标签(标签序列YPYDVPDYA,源于流感病毒的红细胞凝集素表面抗原决定簇)的PAM14缺失突变体PAM14-N和PAM14-C的真核表达载体,将其分别转染至COS7细胞中观察PAM14-N和PAM14-C蛋白在细胞内的定位,并转染至HEK293T细胞检测其是否表达.方法 以含人PAM14全长cDNA序...