脑梗死急性期红细胞免疫功能与一氧化氮的相关性研究

目的：探讨脑梗塞死急性期细细胞免疫粘附（ＲＣＩＡ）功能变化与血清一氧化氮（ＮＯ）含量的相关关系。方法：测定３２例脑梗死急性期患者的红细胞Ｃ３ｂ受体花环率（ＲＢＣ－Ｃ３ｂＲＲ）、红细胞免疫复合物花环率（ＲＢＣ－ＩＣＲ）和血清ＮＯ含量。结果：脑梗死组与正常对照组比较ＲＢＣ－Ｃ３ｂＲＲ显著降低，ＲＢＣ－ＩＣＲ显著增高，血清ＮＯ含量显著高（Ｐ〈０．０１），ＲＢＣ－Ｃ３ｂＲＲ与血清ＮＯ含量呈负相关（Ｐ〈０．     

脑损伤红细胞免疫功能变化及临床意义

检测６６例急性闭合性颅脑外伤患者红细胞Ｃ３ｂ受体花环率（ＲＣ３ｂＲＲ），红细胞免疫复合物花环率（ＲＩＣＲ），红细胞免疫粘附促进百分率（ＲＦＥＲ）及红细胞免疫粘附抑制百分率（ＲＦＩＲ）。观察各型脑外伤后免疫变化的规律与病情转归的关系。结果证明，各组脑外伤患者ＲＣ３ｂＲＲ和ＲＦＥＲ均明显降低（Ｐ〈０．０１），而ＲＩＣＲ和ＲＦＩＲ均明显升高（Ｐ〈０．０１）；上述指标伤情越重，变化越明显，恢复越慢。讨论了     

急性脑梗塞患者红细胞免疫功能变化对红细胞变形性的影响

本文测定了４１例急性脑梗塞患者红细胞滤过指数（ＲＢＣ－ＩＦ）。红细胞Ｃ３ｂ花环率（ＲＢＣ－Ｃ３ｂＲＲ）和红细胞免疫复合物花环率（ＲＢＣ－ＩＣＲ）观察红细胞免疫粘附（ＲＣＩＡ）功能变化对红细胞变形性（ＲＣＩ）的影响，结果显示脑梗塞患者ＲＢＣ－ＩＦ增高，ＲＢＣ－Ｃ３ｂＲＲ下降，ＲＢＣ－ＩＣＲ上升，表明脑梗塞患者ＲＣＤ和红细胞免疫粘附功能下降，且ＲＢＣ随着ＲＣＩＡ功能下降其变形能力也有所降低。提示脑梗塞     

脑缺血再灌注时红细胞免疫功能变化及中性粘多糖对其的影响

本文采用脑缺血再灌注模型，观察沙土鼠红细胞免疫粘附（ＲＣＩＡ）功能变化，红细胞Ｃ３ｂ受体花环率（ＲＢＣ－Ｃ３ｂＲＲ）、红细胞免疫复合物花环率（ＲＢＣ－ＩＣＲ），和中性粘多糖（ＮＭ）对沙土鼠红细胞免疫功能的影响。结果表明：（１）缺血时ＲＢＣ－Ｃ３ｂＲＲ下降不明显（Ｐ〉０．０５），再灌注时明显下降（Ｐ〈０．００１）；（２）缺血和再灌注时ＲＢＣ－ＩＣＲ均升高（Ｐ〈０．００１）；３．提前用ＮＭ可提高再灌注     

急性缺血性脑血管病红细胞免疫功能和丙二醛变化的意义

对３０例急性缺血性脑血管病患者进行红细胞免疫功能和丙二醛测定，发现丙二醛升高的同时，红细胞Ｃ３ｂ受体花环率（ＲＢＣ－Ｃ３ｂＲＲ）低于正常对照组（Ｐ＜０．００１），而红细胞免疫复合物受体花环率（ＲＢＣ－ＩＣＲ）高于正常对照组（Ｐ＜０．００１）。ＲＢＣ－Ｃ３ｂＲＲ与ＲＢＣ－ＩＣＲ变化成负相关。提示氧自由基除对脑有直接损害外，还影响患者红细胞免疫粘附能力，使清除循环免疫复合物的能力下降，进而使免疫复合物沉积于血管内皮，造成损害。这一结果为临床治疗拓宽了思路。     

缺血性脑血管病患者红细胞免疫粘附功能的变化

目的探讨缺血性脑血管病患者红细胞免疫粘附（ＲＣＩＡ）功能的变化。方法测定２０例短暂性脑缺血发作（ＴＩＡ）和５０例脑梗塞患者的红细胞Ｃ３ｂ受体花环率（ＲＢＣ－Ｃ３ｂＲＲ）和红细胞免疫复合物花环率（ＲＢＣ－ＩＣＲ）。结果缺血性脑血管病各组ＲＢＣ－Ｃ３ｂＲＲ与正常对照组相比显著降低，脑梗塞组ＲＢＣ－ＩＣＲ显著增高，急性期变化尤著（Ｐ＜０．０１）。结论ＲＣＩＡ功能的变化与缺血性脑血管病的发生发展有密切的关系     

紫外线辐射自血回输疗法对脑梗塞患者红细胞C3b受体活性的影响

本文观察了３４例脑梗塞患者紫外线辐射自血回输疗法（ＵＩＢ）治疗前后红细胞免疫粘附（ＲＣＩＡ）功能的变化，同时与对照组（２７例）比较。结果为：ＵＩＢ治疗后红细胞Ｃ３ｂ受体（ＲＢＣ－Ｃ３ｂ－Ｒ）花环率升高（Ｐ＜０．０１），红细胞免疫复合物（ＲＢＣ－ＩＣ－Ｒ）花环率下降（Ｐ＜０．０１），而对照组在基础治疗前后变化不显著（Ｐ＞０．０５），两组治疗后比较差异显著。提示ＵＩＢ对脑梗塞患者红细胞免疫功能有改善作用     

急性脑血管病患者红细胞免疫功能的研究

本文对５４例急性脑血管病患者进行了红细胞免疫功能测定，发现红细胞Ｃ３ｂ受体花环率（ＲＢＣ－Ｃ３ｂＲＲ）低于正常对照组，而红细胞免疫复合物受体花环率（ＲＢＣ－ＩＣＲ）高于正常对照组。ＲＢＣ－Ｃ３ｂＲＲ与ＲＢＣ－ＩＣＲ变化成负相关。说明急性脑血管病患者红细胞免疫粘附能力下降，从而清除循环免疫复合物的能力下降，使免疫复合物沉积于血管内皮，造成损害。这一结果为临床治疗拓宽了思路。     

红细胞免疫功能变化与急性脑梗塞发生发展的关系

为了探讨急性脑梗塞患者红细胞免疫粘附（ＲＣＩＡ）功能的变化，测定了４１例急性脑梗塞患者的红细胞Ｃ＿３ｂ受体花环率（ＲＢＣ－Ｃ＿３ｂＲＲ）和红细胞免疫复合物花环率（ＲＢＣ－ＩＣＲ），并对可能影响ＲＣＩＡ变化的红细胞脂质过氧化物（ＲＢＣ－ＬＰＯ）和红细胞超氧化物歧化酶（ＲＢＣ－ＳＯＤ）含量进行了分析和相关研究。结果显示，急性脑梗塞患者ＲＢＣ－Ｃ＿３ｂＲＲ降低，而ＲＢＣ－ＩＣＲ增高，同时，ＲＢＣ－Ｃ＿３ｂＲＲ降低与ＲＢＣ－ＬＰＯ呈显著负相关，与ＲＢＣ－ＳＯＤ呈正相关。研究结果提示，急性脑梗塞患者ＲＣＩＡ功能确受到影响，ＲＣＩＡ功能的下降与体内抗氧化能力下降有关。由此，脂质过氧化造成细胞膜损伤，改变红细胞表面的抗原性。     

新生儿缺氧缺血性脑病红细胞免疫功能变化及与SOD的相关性

本文将新生儿缺氧缺血性脑病（ＨＩＥ）分成轻、中、重３组，观察红细胞Ｃ３ｂ受体花环率（ＲＢＣ－Ｃ３ｂＲＲ）、免疫复合物花环率（ＲＢＣ－ＩＣＲ）、血清中红细胞免疫促进因子（ＲＦＥＲ）、抑制因子（ＲＦＩＲ）及红细胞超氧化物歧化酶（ＳＯＤ）的变化。结果显示：３组ＨＩＥ的ＲＢＣ－Ｃ３ｂＲＲ及ＳＯＤ均显著下降，且二者呈正相关；轻度组ＲＢＣ－ＩＣＲ显著升高；ＲＦＥＲ在中、重度组显著下降；ＲＦＩＲ３组均显著升高。说明ＨＩＥ时红细胞免疫功能降低，其参与了ＳＯＤ在ＨＩＥ发病机制中的作用。     

Experimental study of erythrocyte deformation]

A laser diffraction system was used to study the deformation of RBC. This work indicated: 1. There was a decreased tendency accompanied with age increased, especially at pre-elderly period. 2. The deformability of patients with acute ischemic stroke was significantly decreased. This result emphasized that DI value should be considered as a peculiar index for diagnosis and treatment. 3. Abnormal calcium accumulation in RBC may play a crucial role in governing RBC deformability. It provided one of the basis of potential therapy of calcium antagonist. 4. The quantitative relation of deformation and SOD activity of RBC need to be researched.     

Plasmalogen analysis in erythrocyte membranes of adrenoleukodystrophy

Very long-chain fatty acids accumulate in both adrenoleukodystrophy and Zellweger's syndrome. Plasmalogen content is decreased in Zellweger's syndrome. We therefore analyzed plasmalogen in erythrocyte membrane glycerophospholipids of three patients with adrenoleukodystrophy and eight normal controls. There was no significant difference in the ratio of plasmalogen and diacyl forms in the phosphatidylethanolamine class of the patients and controls. This observation suggests that plasmalogen metabolism differs in adrenoleukodystrophy and Zellweger's syndrome.     

Influence of platelet activation of erythrocyte deformability

Erythrocyte deformability was demonstrated to be influenced by platelet activation. Deformability of erythrocytes suspended in autologous platelet poor plasma (PPP), obtained from platelet rich plasma (PRP), was significantly reduced when PRP had previously been incubated with a platelet activating substance (arachidonic acid, adrenaline or ADP). The possibility of a direct influence of the activating substance on erythrocyte deformability was examined and malondialdehyde formation was determined as an indicator of platelet activation. Erythrocyte deformability was not impaired when endoperoxide formation in platelets was blocked by an inhibitor of cyclooxigenase (acetylsalicylic acid). Plasma viscosity was not influenced by platelet activation as demonstrated by filtration and viscosimetry. Recent studies showed that prostacyclin (PGI2) increases erythrocyte deformability (1). The antagonistic action between prostacyclin released by vessel walls and products of platelet metabolism being well known, we discuss possible mechanisms of this effect and pathophysiological relevance of our results.     

Enhanced erythrocyte aggregability in occlusive cerebrovascular disease

We measured the rate of erythrocyte aggregation using our whole-blood aggregometer in 80 patients with occlusive cerebrovascular disease during the acute and chronic phases. We compared the data with values for 38 age-matched healthy controls. Mean +/- SD erythrocyte aggregability of the patients during both the acute phase (0.145 +/- 0.21/sec, n = 35) and the chronic phase (0.139 +/- 0.21/sec, n = 45) was higher than that in the controls (0.123 +/- 0.21/sec, n = 38; p less than 0.01). Erythrocyte aggregability was positively correlated with the plasma concentration of globulin and fibrinogen and inversely correlated with the albumin:globulin ratio. However, these correlations did not necessarily exclude the possibility that some unknown substance(s) released from ischemic tissue might enhance erythrocyte aggregability.     

Plasma and erythrocyte concentrations of lithium.

The authors have studied the clinical response, EMG and EEG changes in 12 depressed patients after 28 days of lithium carbonate treatment of 1,200 mg daily. The findings confirm: (1) a high correlation between the degree of improvement and the RBC lithium: plasma lithium ratio on the 28th day; (2) a slight decrease in motor conduction velocity (m.c.v.) and increase of M-response duration during lithium treatment; (3) no correlation between EEG and lithium levels and percentage of improvement.     

Abnormal erythrocyte survival in patients with myotonic dystrophy

In four of six patients with myotonic dystrophy whom we studied 51Cr labeled erythrocytes were found to have a biphasic survival kinetic. After in initial significantly more rapid disappearance than in controls, about 80% of the labeled cells reappeared in circulation, and were thereafter eliminated at a significantly faster rate than normal. This type of biphasic survival pattern may partly be related to reduced sialic acid concentration of the erythrocyte membrane in patients with this disease.