维生素E对创伤小鼠T细胞功能以及脂质过氧化和膜流动性的影响

观察了创伤小鼠Ｔ细胞丙二醛（ＭＤＡ）含量、膜流动性、Ｔ细胞功能的变化以及维生素Ｅ（Ｖ－Ｅ）的治疗作用。结果显示，创伤后Ｔ细胞ＭＤＡ含量增加；Ｔ细胞质膜，线粒体膜及微粒体膜流动性降低；Ｔ淋巴细胞转化、白介素２（ＩＬ－２）的产生、ＩＬ－２受体（ＩＬ－２Ｒ）的表达以及ＩＬ－２介导的淋巴细胞增殖反应均受抑。这些变化同ＭＤＡ的改变均密切相关。Ｖ－Ｅ（５０或１００ｍｇ·ｋｇ－１·ｄ－１，ｉｍ×４ｄ）可明显逆转各指标的变化。表明创伤后脂质过氧化反应是导致Ｔ细胞膜流动性降低及Ｔ细胞功能受抑的重要原因，而Ｖ－Ｅ则具有明显的治疗效果。     

黄芪多糖对烧伤小鼠细胞免疫功能的作用

应用小鼠烧伤模型，对黄芪多糖（ＡＰＳ）的免疫增强作用进行了体内外研究。结果表明：体内应用ＡＰＳ（２５０ｍｇ·ｋｇ－１，ｑｄ，连续５ｄ），可明显提高烧伤小鼠Ｔ淋巴细胞转化，ＩＬ－２的产生及ＩＬ－２Ｒ的表达；体外分别应用５０、１００、２５０ｍｇ·Ｌ－１的黄芪多糖，发现其可纠正烧伤小鼠Ｔ淋巴细胞转化，ＩＬ－２的产生及ＩＬ－２Ｒ表达的受抑状态，并促进巨噬细胞产生ＩＬ－１，抑制ＰＧＥ２合成，且呈剂量依赖关系；体外去除烧伤小鼠脾细胞中的巨噬细胞后，ＡＰＳ对Ｔ淋巴细胞转化，ＩＬ－２产生及ＩＬ－２Ｒ表达的调节作用消失。提示ＡＰＳ对烧伤小鼠的免疫调节作用依赖于巨噬细胞，通过调节其分泌ＩＬ－１，抑制ＰＧＥ２合成，而促进ＩＬ－２产生及ＩＬ－２Ｒ表达，进而增强Ｔ淋巴细胞增殖。     

肝动脉化疗栓塞术前后血清sIL－2R水平和IL－2活性变化

分别应用双抗体夹心酶联免疫法（ＥＬＩＳＡ）和Ｔ淋巴母细胞微量培养法，对４５例中晚期肝癌患者行肝动脉化疗栓塞术（ＴＡＣＥ）前后血清可溶性白细胞介素－２受体（ｓＩＬ－２Ｒ）水平和白细胞介素－２活性（ＩＬ－２）进行检测，并与３０例健康献血员比较。结果治疗前原发性肝癌患者ｓＩＬ－２Ｒ水平明显高于对照组，ＩＬ－２活性明显低于对照组。ＴＡＣＥ术后ＳＩＬ－２Ｒ水平明显下降，ＩＬ－２活性明显回升。应用免疫调节剂组较未用组ｓＩＬ－２Ｒ下降和ＩＬ－２升高更显著。结果提示：ＴＡＣＥ能改善机体免疫功能，给予合理的过继免疫治疗能增强这种作用     

IL-2-PE40对免疫活性T细胞的影响

目的研究ＩＬ－２－ＰＥ４０对免疫活性Ｔ细胞的影响。方法采用ＣｏｎＡ刺激的淋巴细胞增殖试验、混合淋巴细胞培养（ＭＬＣ）及细胞毒试验。结果ＩＬ－２－ＰＥ４０对ＣｏｎＡ诱导的小鼠脾细胞有十分强的细胞毒性，能选择性地抑制ＭＬＣ中抗原活化的Ｔ细胞活性，保留未活化Ｔ细胞对ＣｏｎＡ诱导的丝裂原反应，在培养ｄ３加入ＩＬ－２－ＰＥ４０比培养开始时加入对ＭＬＣ抑制作用强。结论ＩＬ－２－ＰＥ４０能够高度选择性抑制免疫活性Ｔ细胞，是ＩＬ－２Ｒ靶向治疗中具有潜力的一种免疫抑制剂。     

灵芝多糖体外对小鼠脾细胞IL-2,IL-3 mRNA表达的影响

目的观察灵芝多糖体外对小鼠脾细胞ＩＬ－２、ＩＬ－３ｍＲＮＡ的表达水平是否有影响。方法逆转录多聚酶链式反应（ＲＴ－ＰＣＲ）检测ｍＲＮＡ表达，凝胶图象光密度分析系统进行相对定量。结果在原代小鼠脾细胞培养开始时加入不同浓度的灵芝多糖ＧＬＢ７（５，１０，２０，４０ｍｇ·Ｌ－１），培养１２ｈ及２１ｈ后观察ＧＬＢ７与ＩＬ－２及ＩＬ－３ｍＲＮＡ表达水平之间的量效关系。发现在一定范围内，随着ＧＬＢ７浓度的升高，ＩＬ－２及ＩＬ－３ｍＲＮＡ表达水平也相应提高，对ＩＬ－２ｍＲＮＡ的提高率分别为１０．４％，２１．９％，３７．８％，４６．６％；对ＩＬ－３ｍＲＮＡ的提高率分别为１５．４％，３５．２％，５２．４％，７４．５％。１９９８－０４－０８收稿，１９９８－０７－２６修回＊国家自然科学基金资助课题，Ｎｏ３９４００１６５作者简介：王庆彪，男，２６岁，硕士；雷林生，男，３８岁，医学博士，副教授培养１２ｈ和３０ｈ的上清液中ＩＬ－２样活性及ＩＬ－３样活性处理组与对照组相比亦有明显升高，且有一定的浓度依赖关系。结论灵芝多糖的免疫增强作用与其在转录水平上促进ＩＬ－２及ＩＬ－３ｍＲＮＡ的表达有关     

乌苯美司对小鼠白细胞介素─2的影响

目的：观察乌苯美司（ｕｂｅｎｉｍｅｘ，ＵｂＣ）对小鼠白细胞介素－２（ＩＬ－２）生成及反应性的影响。方法：Ｃ５７ＢＬ／６小鼠ｉｇ或ｉｐＵｂｅ５ｍｇ／（ｋｇ·ｄ）×７ｄ，在ｄ３给环磷酰胺（Ｃｙｃ）１次ｉｐ，１００ｍｇ／ｋｇ，ｄ８取小鼠脾细胞。用ＩＬ－２依赖性淋巴细胞株（ＣＴＬＬ）［３Ｈ］ＴｄＲ参入法，测定ＩＬ－２含量。结果：Ｕｂｅ能显著增加小鼠淋巴细胞的生成，增强对ＩＬ－２的反应性，但不影响血清中ＩＬ－２抑制物的活性。Ｃｙｃ对小鼠ＩＬ－２生成及ＩＬ－２反应性有较强的抑制作用，此作用在一定程度上可被Ｕｂｅ逆转。结论：Ｕｂｅ对小鼠ＩＬ－２生成及反应性有显著促进作用，且可拮抗Ｃｙｃ对ＩＬ－２生成的抑制。     

白芍总甙对正常人与类风湿性关节炎患者单核细胞和淋巴细胞功能的影响

０．１～２．５ｍｇ·Ｌ－１白芍总甙（ＴＧＰ）对正常人的ＬＰＳ诱导外周血单个核细胞产生ＩＬ－１．ＰＨＡ－Ｐ诱导淋巴细胞增殖反应和ＩＬ－２产生均呈现浓度依赖性的双向作用；ＴＧＰ还可浓度（０．１～１２．５ｍｇ·Ｌ－１）依赖性地降低正常人淋巴细胞上ＩＬ－２Ｒ的密度．ＴＧＰ能使类风湿性关节炎（ＲＡ）患者低下的ＰＨＡ－Ｐ致分裂素反应与ＩＬ－２产生能力恢复正常，使外周血中减少的Ｔｓ细胞数目回到正常水平．但可使ＲＡ患者ＰＢＭＣ过度产生ＩＬ－１降低至正常范围．并能显著降低ＲＡ患者增高的淋巴细胞ＩＬ－２Ｒ的密度。上述结果表明．ＴＧＰ对ＲＡ患者有明显的机能依赖性免疫调节作用．ＴＧＰ对ＲＡ的治疗作用可能与其调整ＲＡ患者异常的免疫功能有关。     

自身免疫性甲状腺病患者白细胞介素及受体基因表达的研究

目的 观察３７例自身免疫性甲状腺病（ＡＩＴＤ）患者甲状腺组织中相关白细胞介素（ＩＬ）及受体基因表达,并测定血清ＴＴ３,ＴＴ４及ＴＧＡ,ＴＭＡ的水平,结果表明格莱弗氏病（ＧＤ）患者ＩＬ－２,ＩＬ－２Ｒ及ＩＬ－６ｍＲＮＡＡ表达细胞阳性率与血清ＴＴ３,ＴＴ４水平呈正相关。桥本氏甲状腺炎（ＨＴ）患者ＩＬ－２,ＩＬ－２Ｒ,ＩＬ－６ｍＲＮＡ表达细胞阳性率与血清ＴＧＡ ＴＭＡ呈正相关。     

急性脑血管病患者血清可溶性白细胞介素2受体的观察

目的检测５１例急性脑血管病（ＡＣＶＤ）患者外周血可溶性白细胞介素２受体（ＳＩＬ－２Ｒ）水平。方法 采用ＥＬＩＳＡ双抗夹心法。结果 发现ＡＣＶＤ患者外周血可溶性细胞介素２受体水平升高。结论 提示ＡＣＶＤ患者存在免疫异常,临床上对ＡＣＶＤ患者应予以免疫增强剂。     

间硝苯地平对老龄肾性高血压大鼠心肌和脑微粒体Na~＋，K~＋－ATP酶，Ca~

间硝苯地平（ｍ－Ｎｉｆ，ｉｇ２０ｍｇ·ｋｇ－１·ｄ１持续给药９周）可显著降低老龄肾性高血压大鼠（ＲＶＨＲ）血压和左室重量（Ｐ＜０．０１），增高心、脑微粒体Ｎａ＋，Ｋ＋－ＡＴＰ酶和Ｃａ２＋－ＡＴＰ酶活性（Ｐ＜０．０１），降低Ｍｇ２＋－ＡＴＰ酶活性，体外量效关系研究发现，ｍ－Ｎｉｆ在较高剂量（１０～１０００μｍｏｌ·Ｌ－１）时可增高ＲＶＨＲ心脑微粒体Ｎａ＋，Ｋ＋－ＡＴＰ酶和Ｃａ２＋－ＡＴＰ酶活性，且随剂量增加而增高。上述结果表明，ｍ－Ｎｉｆ可改善老龄ＲＶＨＲ心脑微粒体Ｎａ＋，Ｋ＋泵和Ｃａ２＋泵功能。     

海带多糖的免疫调节作用

目的观察海带多糖 (BSP)对正常及免疫低下小鼠免疫功能的影响。方法BSP经腹腔注射给药后 ,测定了各组小鼠胸腺、脾指数 ,外周血白细胞数 ,脾的T、B细胞增殖能力 ,脾细胞产生IL 2能力 ,以及血清和脾细胞溶血素含量等的变化。结果BSP 10 0mg/ (kg·d)× 10d能显著提高免疫低下小鼠胸腺、脾指数及外周血白细胞数 ,还能提高正常小鼠胸腺、脾指数 ;明显促进正常及免疫低下小鼠脾的T、B细胞增殖能力和脾细胞产生IL 2能力 ;BSP还能增加正常及免疫低下小鼠血清和脾细胞溶血素的含量。结论BSP是一种免疫调节剂 ,对正常及免疫低下小鼠的免疫功能具有促进作用。     

Ser~(125)白介素-2的免疫及抑瘤活性研究

研究 Ｓｅｒ１２５白介素－２（Ｓｅｒ１２５ＩＬ－２）的免疫活性及抗瘤作用。方法：小鼠给药后,观察药物对巨噬细胞和淋巴细胞转化的影响;小鼠体内接种Ｓ１８０肉瘤和Ｂ１６黑色素瘤后,观察其抑瘤作用。结果：Ｓｅｒ１２５ＩＬ－２可明显提高小鼠腹腔巨噬细胞的吞噬率和淋巴细胞的转化率（Ｐ＜０． ０１）,显著抑制 Ｓ１８０肉瘤和 Ｂ１６黑色素瘤的体内生年（Ｐ＜０． ０１）。结论：Ｓｅｒ１２５ＩＬ－２ 有增强细胞免疫和抑制肿瘤生氏的作用。     

脑内注射白细胞介素-1β对淋巴结细胞应激免疫抑制因子生成的影响

our previous work showed that a suppressive factor( a protein with largemolecular weight in serum was induced by restraint stress in mice and rats,which suppressed Con Ainduced lymphocyte proliferation.It was also found that the generation of serum suppressive factorwas under control of the central nervous system.Our further study showed thatintracerebroventricular(icv )injection of interleukin 1 receptor antagonist(IL-1Ra)antagonised thegeneration of serum suppressive factor induced by restraint stress and icv injection of interleukin-1β(IL-1β)increased the generation of the suppressive factor.Our experiment also showed that the serumsuppressive factor induced by restraint stress was first made in lymph tissue and then released intoblood.The present work was designed to investigate the role of IL-1 in the brain in generation of thesuppressive factor in lymph node in mice.Icv injection of IL-1β( 1 pg/mouse) was shown tosignificantly increase the generation of the suppressive factor in lymph node.Icv injection of IL-1Ra,however ,antagonised generation of the suppressive factor.In mice without restraint stress,both thesuppressive factor in serum and in lymph node were found to be induced in dose-dependent manner byicv injection of IL-1β.Taken together,these results suggest that IL-1β in brain played a veryimportant role in generation of the suppressive factor in lymph node.The positive correlation betweenthe suppressive action of lymph node and of serum added to the evidence that lymph tissue is probablythe source of the serum suppressive factor.     

氟酰褪黑素对小鼠免疫功能的影响

目的探讨合成免疫调节剂氟酰褪黑素(N-(2-(5-methoxy-2-ethoxycarbonyl-3-indolyl)ethyl)tri-fluoroacetamide,TFMMT)对小鼠体内、外免疫活性的调节作用。方法使用正常动物模型,通过碳粒廓清实验、溶血素水平、迟发超敏反应、淋巴细胞转化实验及白介素-2(IL-2)的释放,测定小鼠的免疫功能。结果 TFMMT3个剂量组均能在不同程度上增强巨噬细胞的吞噬能力,提高血清溶血素水平;TFMMT高剂量组能提高小鼠对体内迟发超敏反应细胞的功能;浓度在2.03×10-10~6.98×10-7mol.L-1内,TFMMT剂量依赖性使小鼠脾脏中T淋巴细胞对ConA的反应性显著提高,TFMMT可使正常小鼠脾细胞分泌IL-2的水平升高,随剂量不断增大,作用反而减弱,呈剂量依赖性,但以1.17×10-9~6.98×10-7mo.lL-1内较为显著。结论 TFMMT能在体液、细胞及非特异性免疫等不同角度增强小鼠的免疫功能。     

Effect of exogenous catecholamines on tumor necrosis factor alpha, interleukin-6, interleukin-10 and beta-endorphin levels following severe trauma

Cytokines and endogenous opioids are mediators of the post traumatic inflammatory response. The aim of this study was to determine the effect of exogenous catecholamines on tumor necrosis factor alpha (TNFa), interleukin-6 (IL-6), interleukin-10 (IL-10) and beta(beta)-endorphin levels in patients with severe trauma, during the first 24 h after injury. Forty four traumatized patients with haemorrhage class III and IV were included in the study. Patients were divided in two groups: Group 1 (adrenergic, n=22) and Group 2 (non adrenergic, n=22), depending on the use of exogenous catecholamines. Blood samples were collected at 0, 2, 4 and 24 h time points. Baseline values were different between the two groups, but an altered pattern of release was observed for TNFa, IL-6, IL-10 and beta-endorphin levels in patients treated with catecholamines. ICU stay was longer for the adrenergic group, while survival after 1 month was significantly lower. Findings support an altered pattern of cytokine release during the early phase after trauma, probably due to catecholamine presence.     

龙眼壳多糖含量的测定及其免疫活性研究

目的从龙眼壳中提取分离龙眼壳多糖,测定龙眼壳多糖在龙眼壳中的含量,同时探索龙眼壳多糖对体外小鼠脾淋巴细胞的免疫活性的影响。方法采用水提醇沉法提取分离龙眼壳多糖,经酶-Sevage法除蛋白和H2O2氧化法除色素后,进一步用DEAE-纤维素柱层析和葡聚糖凝胶Sephadex G-100柱层析对龙眼壳多糖进行纯化,苯酚-硫酸法测定龙眼壳多糖含量;MTT法测定龙眼壳多糖对ConA诱导小鼠脾淋巴细胞的增殖能力;酶联免疫吸附反应(ELISA)分析龙眼壳多糖对ConA诱导小鼠脾淋巴细胞分泌IL-2的诱生作用。结果龙眼壳多糖总糖含量为51.84%,龙眼壳粗多糖得率为3.22%,经过纯化之后的龙眼壳多糖的糖含量为92.01%。龙眼壳多糖不同剂量组对ConA诱导小鼠脾淋巴细胞的增殖能力有增强作用,对ConA诱导小鼠脾淋巴细胞分泌IL-2有明显的促进作用,均与剂量呈正相关关系。结论龙眼壳多糖能增强小鼠脾淋巴细胞的免疫作用。     

The profile of Th17 subset in glioma

The Th17 cell subset is involved in many autoimmune and infectious pathologies. It is also associated with the tumorigenesis process and poor prognosis of certain tumors. However, its expression and function in glioma cases remain unclear. We measured the percentage of Th17 cells in peripheral blood mononuclear cells (PBMCs) and compared the concentrations of relevant cytokines in the serum of 35 glioma patients and 20 healthy donors. Protein, mRNA, and levels of Th17-relevant cytokines in 24 glioma tissues and 5 cerebral trauma tissues were also assessed. We evaluated whether Th17-relevant cytokines were associated with the clinical stages of glioma. The results showed that there were no significant differences in the volume of Th17 cells in PBMCs and serum concentrations of interferon (IFN)-γ, interleukin (IL)-17, IL-6, IL-23, and TGF-β between glioma patients and healthy donors nor did these differences exist in patients with different clinical stages of glioma. Different expression patterns of Th17-relevant cytokines were observed in glioma tissues when compared to trauma tissues. High mRNA-positive ratios of IL-17 (19/24) and retinoid-related orphan receptor (RORC) (18/24) were observed in glioma tissues, but not in trauma tissues. Positive ratios of transforming growth factor (TGF)-β were higher in trauma tissues and glioma grade II than in glioma grade IV. IL-6, IFN-γ, and IL-1β showed high positive ratios, but showed no significant differences between trauma tissues or grades of glioma. None of the glioma and trauma tissues was positive for IL-23. High positive ratios of IL-17 in glioma tissue were confirmed via analysis of immunohistochemical staining. The results demonstrated that IL-17 and other Th17-relevant cytokines could be expressed in glioma tissues. IL-17 expression, the hallmark of Th17 cell subset, may play an important role in glioma tumorigenesis and progression.     

In vivo effects of deoxyspergualin (NKT-01) on lymphocyte activation in response to alloantigens

We studied the effects of deoxyspergualin (NKT-01) on the events of lymphocyte activation in vivo by inoculating mice in the footpad with allogeneic spleen cells, and compared the effects with those of cyclosporin A (CyA). The administration of NKT-01 increased the numbers of cells recovered from the popliteal lymph node (PLN) 7 days after inoculation, but inhibited the proliferation of these cells in the presence of exogenous interleukin 2 (IL-2). NKT-01 enhanced IL-2 production, but suppressed the production of macrophage activating factor (MAF) in the mixed lymphocyte reaction between the PLN cells and allogeneic spleen cells treated with mitomycin C. CyA decreased the numbers of PLN cells little, and suppressed the response to exogenous IL-2 and the production of both IL-2 and MAF. Results with tumor cells used as allogeneic cells suggested that there was a close relationship between the suppression of MAF production by NKT-01 and its inhibition of allograft rejection. The findings showed that NKT-01 inhibited both the MAF production by and the response to IL-2 of PLN cells, and that these effects were involved in the suppression of allograft rejection by NKT-01.