肺癌患者红细胞CR1基因密度型分布与红细胞免疫变？…

目的 检测３２例肺癌患者红细胞ＣＲ１基因密度型分布，红细胞免疫粘附肿瘤细胞功能及ＳＯＤ酶活性、β－内啡肽含量。方法 ＰＣＲ法检测红细胞ＣＲ１基因密度多态性，红细胞花环法检测红细胞免疫粘附肿瘤细胞能力；放免法测定ＳＯＤ酶活性；ＲＩＡ法测定β－内啡肽含量。     

原发性肝癌患者红细胞免疫粘附肿瘤细胞能力与红细胞CR1基因型及活性相关性分析

目的　研究原发性肝癌患者红细胞免疫粘附肿瘤细胞能力与红细胞ＣＲ１ 基因组密度多态性及活性的相关性。方法　采用ＰＣＲ 和Ｈｉｎｄ Ⅲ酶切技术测定红细胞ＣＲ１ 基因组密度多态性变化,同时用ＥＬＩＳＡ 和肿瘤红细胞花环试验测定红细胞ＣＲ１ 活性,并进行比较。结果　原发性肝癌患者红细胞ＣＲ１ 基因型点突变比率（４３－６ ％ ） 明显上升,与正常人（２０ ％ ） 相比,差异有显著性（ Ｐ＜０－０５） ;原发性肝癌患者３ 种ＣＲ１ 基因型的红细胞ＣＲ１ 活性都明显低于正常人（ Ｐ＜ ０－０１ 或 Ｐ＜０－０５） 。活性变化也不同。结论　原发性肝癌患者红细胞ＣＲ１ 活性及免疫粘附肿瘤细胞能力下降可分为三种不同类型,即原发型、获得型和混合型。     

紫外线照射全血对红细胞免疫功能及脂质过氧化的影响

为了研究Ｂ波段紫外线（ＵＶＢ）照射全血对红细胞免疫功能及全血抗氧化能力的影响，利用１．５Ｊ／ｃｍ２的ＵＶＢ对全血进行照射，结果发现照射后红细胞Ｃ３ｂ受体花环促进率（ＲＦＥＲ）明显升高（Ｐ＜０．０５），而红细胞Ｃ３ｂ受体（ＲＣＲ）花环率升高更为明显（Ｐ＜０．０１），红细胞免疫复合物（ＲＢＣ－ＩＣ）花环率及与红细胞Ｃ３ｂ受体花环抑制率（ＲＦＩＲ）在照射前后无明显改变（Ｐ＞０．０５），红细胞超氧化物歧化酶（ＳＯＤ）活性在照射后明显升高（Ｐ＜０．０１），而血浆中丙二醛（ＭＤＡ）含量无明显改变（Ｐ＞０．０５）。说明紫外线照射能改善红细胞免疫功能及全血的抗氧化能力。     

白血病患者红细胞CR_1活性及其免疫调节因子测定的临床应用研究

本文采用多种指标检测４２例白血病患者的红细胞、白细胞免疫功能，并与正常人作了比较。肿瘤细胞花环法测定白血病患者红细胞ＣＲ１活性结果比正常人明显降低（Ｐ＜０．０１）；红细胞ＣＲ１活性抑制因子升高、促进因子降低与正常人相比均有显著差别（Ｐ＜０．０１），ＣＩＣ比正常人明显升高（Ｐ＜０．０１）；ＣＤ４、ＣＤ８也比正常人明显降低（Ｐ＜０．０１，Ｐ＜０．０５）。提示：白血病患者红细胞和白细胞免疫功能均发生异常变化。此外，对急性白血病患者部分病例治疗前后的红细胞ＣＲ１活性及其免疫调节因子的变化进行了追踪检测以探讨其临床意义。     

原发性肝癌患者红细胞免疫粘附肿瘤细胞能力与红细 …

目的 研究原发性肝癌患者红细胞免疫粘附肿瘤细胞能力与红细胞ＣＲ１基因组密度多态性及活性的相关性。方法 采用ＰＣＲ和ＨｉｎｄⅢ酶切技术测定红细胞ＣＲ１基因组密度多态性变化，同时用ＥＬＩＳＡ和肿瘤红细胞花环试验测定红细胞ＣＲ１活性，并进行比较。结果 原发性肝癌患者红细胞ＣＲ１基因型点突变比率（４３．６％）明显上升，与正常人（２０％）相比，差异有显著性（Ｐ〈０．０５）；原发性肝癌患者３种ＣＲ１基因型的红     

慢性肾功能不全患者血清及尿液超氧化物歧化酶含量的变化

用放射免疫分析测定７５例肾病患者血清和尿液含铜锌离子超氧化物歧化酶（Ｃｕ－Ｚｎ－Ｓｕｐｅｒｏｘｉｄｅｄｉｓｍｕｔａｓｅ，简称Ｃｕ－Ｚｎ－ＳＯＤ或ＳＯＤ－１）的含量，并与５１名健康人对比。结果显示，慢性肾功能不全（ＣＲＦ）血透组患者血清ＳＯＤ－１含量显著增高（Ｐ＜０．０１），随着血液透析期的延长，其含量有渐升趋势；非血透组略有降低（Ｐ＞０．０５；其它肾病组明显降低（Ｐ＜０．０１）。三组患者尿液ＳＯＤ－１含量呈不同程度增高（Ｐ均＜０．０１），并随着病变的严重程度而增幅更明显，血／尿ＳＯＤ－１比值也随之降低。本文初步分析了这些变化的原因及意义。     

20例先天愚型患儿红细胞免疫功能检测分析

为进一步了解先天愚型（ＤＳ）患儿红细胞免疫功能状况。本文对２０例ＤＳ患儿进行了红细胞Ｃ３ｂ受体（ＲＢＣ－ｃ３ｂ）花环试验和红细胞免疫复合物（ＲＢＣ－ＩＣ）花环试验，并与５０例正常儿童进行比较。结果显示：ＤＳ患儿ＲＢＣ－ｃ３ｂ花环率显著低于对照组（Ｐ＞０．０５）；而ＲＢＣ－ＩＣ花环率稍低于对照组（Ｐ＜０．０５）但无统计学意义。提示ＤＳ患儿红细胞免疫功能较正常儿童是明显降低的。     

多抗甲素对荷S180瘤小鼠红细胞免疫功能的影响

观察了荷Ｓ１８０瘤小鼠红细胞免疫功能的改变及多抗甲素治疗对其红细胞免疫功能的影响。试验分三组，即正常组、肿瘤组、多抗甲素治疗肿瘤组。荷瘤１０天后，检测各组红细胞免疫功能各项指标。结果显示：荷瘤小鼠的红细胞免疫功能较正常对照组全面下降（Ｐ＜０．０１）。表现为：１．ＲＢＣ－Ｃ３ｂ受体花环率下降，ＲＢＣ－ＩＣ花环率上升，为继发性红细胞Ｃ３ｂ受体免疫粘附功能下降。２．血清中红细胞Ｃ３ｂ受体免疫粘附促进因子活性下降，而抑制因子活性上升。３．红细胞免疫粘附肿瘤细胞能力下降。经多抗甲素治疗后，可使荷瘤小鼠红细胞抗肿瘤免疫功能较未治疗组全面上升（Ｐ＜０．０１）。提示荷瘤小鼠的红细胞免疫功能低下，多抗甲素抗肿瘤活性与提高红细胞免疫功能有关     

地奥心血康对心肌缺血再灌犬心肌细胞膜Na~＋，K~＋—ATP酶活性与LPO含量

１６只成年杂种犬复制心肌缺血再灌模型。分为地奥心血康治疗组（ＤＡＸＸＫＧ）和生理盐水对照组（ＮＳＣＧ）。差速离心分离心肌细胞质膜，无机磷法测定心肌细胞膜Ｎａ￣＋，Ｋ￣＋－ＡＴＰ酶活性，荧光法测定心肌细胞膜与血清脂质过氧化物（ＬＰＯ）含量。结果表明：（１）ＤＡＸＸＫＧＮａ￣＋，Ｋ￣＋－ＡＴＰ酶活性明显高于ＮＳＣＧ（Ｐ＜０．０１）；（２）血清ＬＰＯ含量，随着再灌时间延长，ＮＳＣＧ呈上升趋势，ＤＡＸＸＫＧ略下降，再灌２４０ｍｉｎ两组比较差异显著（Ｐ＜０．０１）；心肌细胞膜ＬＰＯ含量，ＤＡＸＸＫＧ低于ＮＳＣＧ（Ｐ＜０．０５）；（３）心肌细胞膜Ｎａ￣＋，Ｋ￣＋－ＡＴＰ酶活性与ＬＰＯ含量呈明显负相关（ｒ＝－０．８３，Ｐ＜０．０１）。这些结果提示ＤＡＸＸＫ可通过抗脂质过氧化而实现其保护心肌细胞膜的效应。     

兔动脉硬化时脑血管血液动力学参数变化及相关性分析

本文报道了兔动脉硬化时，脑血管血液动力学参数（ＣＶＨＰ）的变化。动脉硬化组（ＡＳ组）颈动脉平均血流量（Ｑｍｅａｎ）、平均血流速度（Ｖｍｅａｎ）、最大血流速度（Ｖｍａｘ）、最小血流速度（Ｖｍｉｎ）和脑血管零压顺应性（ＣＯ）显著降低（Ｐ＜０．０５～０．０１），脑血管外周阻力（Ｒ）及脑血管特性阻抗（Ｚｃ）显著升高（Ｐ＜０．０５及０．００１）。颈动脉病变程度与Ｑｍｅａｎ、Ｖｍｅａｎ和ＣＯ有显著负相关（Ｐ＜００５），与Ｒ和Ｚｃ有显著正相关（Ｐ＜００５及０．０１）。Ｑｍｅａｎ与Ｖｍｅａｎ、Ｖｍａｘ和ＣＯ有显著正相关（Ｐ＜０．０５～０．０１），与Ｒ和Ｚｃ有显著负相关（Ｐ＜０．０１及０．０５）．对照组（Ｃ组）与ＡＳ组回归方程比较，Ｑｍｅａｎ－Ｖｍａｘ和Ｑｍｅａｎ－Ｒ斜率ｂ有显著差别（Ｐ＜０．０１及０．００１）；Ｑｍｅａｎ－Ｖｍｅａｎ、Ｑｍｅａｎ－ＣＯ和Ｑｍｅｎａ－Ｚｃ截矩ａ有显著差别（Ｐ＜０．０５～０．０１）。     

Determination of erythrocyte sorbitol

An increase in the intra-cellular concentrations of sorbitol can be responsible, at least in part, for certain long term complications of diabetes. Since the erythrocyte concentration of this polyol is a good indicator of that of other cells, we propose a simple, rapid enzymatic assay technique for red blood cells. The results already obtained reveal a significant difference between the erythrocyte sorbitol concentration in non-diabetic subjects and that in diabetic patients.     

Dielectric inspection of erythrocyte morphology

We performed a systematic study of the sensitivity of dielectric spectroscopy to erythrocyte morphology. Namely, rabbit erythrocytes of four different shapes were prepared by precisely controlling the pH of the suspending medium, and their complex permittivities over the frequency range from 0.1 to 110 MHz were measured and analyzed. Their quantitative analysis shows that the characteristic frequency and the broadening parameter of the dielectric relaxation of interfacial polarization are highly specific to the erythrocyte shape, while they are insensitive to the cell volume fraction. Therefore, these two dielectric parameters can be used to differentiate erythrocytes of different shapes, if dielectric spectroscopy is applied to flow-cytometric inspection of single blood cells. In addition, we revealed the applicability and limitations of the analytical theory of interfacial polarization to explain the experimental permittivities of non-spherical erythrocytes.     

Antigenicity of rat erythrocyte glycophorins

The relationship between rat red blood cell (RBC) glycophorins and the antigens recognised by anti-rat RBC antibodies was examined. Initially, murine monoclonal antibodies specific for surface epitopes on whole rat RBCs were tested for their reactivity with RBC membranes on Western blots and two were found which reacted with blotted antigens. These antibodies recognised two bands corresponding to the major PAS-stainable bands of rat RBC membranes (i.e., the glycophorins) and a number of minor bands, thus demonstrating that the bands are antigenically related. This band-pattern was remarkably similar to that obtained with mouse anti-rat RBC serum. Digestion with neuraminidase altered the electrophoretic mobility of most of the bands, providing additional evidence that they are sialoglycoproteins, although sialic acid was shown not to contribute to their antigenicity. The glycophorin nature of the major antigens was verified by reelectrophoresis and blotting of bands excised from SDS gels, which showed that they were interconvertible monomeric and dimeric forms of the same polypeptide chain. It is suggested that rat RBC glycophorins are a related family of sialoglycoproteins with the high molecular weight members being formed by dimerization of five lower molecular weight polypeptide chains in various combinations.     

Bilirubin-induced erythrocyte membrane cytotoxicity

The kinetics of bilirubin erythrocyte interaction have been followed by scanning electron microscopy. Bilirubin-induced erythrocyte cytotoxicity embodies the interaction of the bile pigment with the outer half of the erythrocyte plasma membrane bilayer couple. This interaction leads to crenation. This membrane event appears to be primary and precedes hemolysis. The membrane crenation is dependent on the concentration of the bile pigment and is reversed by bovine serum albumin again in a concentration-dependent manner. Phospholipids do not alter bilirubin erythrocyte ineraction. Erythrocytes from jaundiced neonates show crenated surface structure in scanning electron microscopy. The crenation depends upon severity of jaundice in neonates. This suggests similarity between in vivo and in vitro mechanisms of cytotoxicity mediated by the bile pigment. Further, phototherapy reverses the process of membrane crenation. The in vivo photocatabolities isolated from urine of jaundiced neonates are nontoxic to erythrocyte membrane.