精浆对血清补体溶解免疫复合物活性抑制作用的实验研究

本文就精浆对血清补体溶解免疫复合物活性(Complex-release activity of com-plement.CRA)的抑制作用进行了实验研究,结果表明精浆对CRA 有较强的抑制作用,测定20例正常精浆样品对CRA 的抑制率(?)±SD 为67.48±9.75%.同时还观察了实验中的影响因素.本文的实验研究对生殖免疫的深入研究和临床诊断有一定的应用意义.     

雷帕霉素纳米粒滴眼液联合环孢素A缓释膜治疗兔高危角膜移植术后免疫排斥反应的研究

Objective To evaluate the combined effect of topical rapamycin (RAPA) eye drop in nanometer vector and poly (lactic acid) (PLA) wafers of cyclospoirne A(CsA) in the prevention of acute allograft rejection after rabbit corneal transplantation. Methods It was an experimental study. RAPA was incorporated into the nanometer particles and CsA was incorporated into PLA wafers. A was syngeneic control whose both donor and recipient are New Zealand rabbit. Gray donor corneas were implanted into the 102 recipients of New Zealand albino rabbits with corneal neovascularization who were randomly divided into B, C, D, E, F, G 6 groups to receive the different types of therapy: B was no therapy control; C was eye drop of nanometer vector but no RAPA twice a day,28 days; D was PLA wafers in the anterior chamber of rabbit eyes but no drugs; E was 0.5% RAPA eye drop of nanometer vector twice a day,28 days; F was PLA wafers of CsA in the anterior chamber of rabbit eyes; G was PLA wafers of CsA in the anterior chamber of rabbit eyes and 0.5% RAPA eye drop of nanometer vector eye drop twice a day for 28 days together. Postoperative evaluation included slit-lamp biomicroscopy, histopathology and immunohistoiogy, Cytokines related with neovascularization and immunosuppression in the corneal tissue by RT-PCR. The graft survival was assessed by One-Way ANOVA and q test. Results Corneal allograft survival time: A (100.00±0.00), B ( 8.44±1.24), C (8.89±2.57), D (8.56±2.30), E (43.11±5.58), F (43.67±9.54), G (72.00±15.34)d. Group G led to a statistically significant prolongation of transplant survival and was superior than group E and F which was a statistical prolongation compared with group B, C and D (qGE=11.42, qGF=11.24,qEB=13.64, qEC=13.38, q<=13.46, qFB=13. 82, qFC=13.56, qFD=13.64; P<0.01). Immunohistopathologically, the grafts were subjected to an immune response contained a dense infiltrate of neutorphils,CD4+ and CD8+ T lymphocytes in the group B ,C and D. This cellular infiltrate was a significant reduction in group E,F,G. RT-PCR showed that the gene expression of IL-2 was inhibited earlier (3 days) in group F, G and VEGF gene expression being suppressed later (14 days) in group E, G. Conclusions Combined therapy with topical application of RAPA eye drop of nanometer vector and CsA PLA wafers can significantly prolong the survival of allograft at high-risk. Moreover, topical combined treatment of them is more effective, lower dosage, less side-effects and cheaper than the treatment with topical individual immunosuppressive drug.     

关于建立杂交瘤细胞株技术中几个问题的研究

当前越来越多的实验室已应用杂交瘤技术制备各种单克隆抗体(McAb)。但由于抗原性质及研究目的不同,在建立能分泌McAb 的杂交瘤细胞株时,许多技术环节也有差异,如动物的免疫方法,杂交瘤细胞筛     

碘对诱发易感和非易感小鼠自身免疫性甲状腺炎的实验研究

目的：研究典对实验性自身免疫性甲状腺炎（EAT）易和非易感小鼠诱发EAT的影响，进一步探讨自身免疫性甲状腺疾病（AITD）发病的机理。方法：采用EAT易感（TA－1）和非易感（BALB／c）小鼠经甲状腺球蛋白（Tg）免疫，诱发为EAT实验动物模型并给予不同水平的碘饮食，观察小鼠甲状腺组织的病理改变和炎细胞润程度，血清中Tg自身抗体的水平以及低磺和高碘Tg抗原性的不同。结果：（1）2种品系小鼠经Tg诱发，均出现不同水平的Tg自身抗性和甲状腺的炎症反应，血清中Tg自身抗体的出现早于甲状腺的病理改变。（2）TA－1小鼠的甲状腺炎症反应明显高于BALB／c小鼠，高碘组中的TA－1小鼠炎症较适碘组更明显，为弥漫性伴慢性炎症（＋＋＋）。（3）高碘Tg诱发的Tg抗体与高碘Tg抗原的反应明显高于与低碘Tg抗原的反应，低碘Tg诱发的Tg抗体反之，表明二者抗原性有所不同。结论：高碘摄入会使易感小鼠EAT的发病加重，其机理除了体内的遗传因素，可能与过度碘的Tg抗原性增强有关。     

雌激素对大鼠实验性自身免疫性甲状腺炎的影响

目的　研究雌激素在诱发实验性自身免疫性甲状腺炎 (EAT)形成中的影响。方法　 10周龄Wistar大鼠进行双侧卵巢切除术后采用同种属SD大鼠甲状腺球蛋白 (Tg)免疫诱发EAT。病理切片HE染色观察甲状腺炎症反应。采用放免方法测定血清中E2 、PRL水平。间接酶联免疫吸附实验 (ELISA )测定血清Tg抗体 (TgAb)水平。逆转录 聚合酶链反应 (RT PCR)检测甲状腺组织中γ 干扰素 (IFN γ)、白细胞介素 10 (IL 10 )mRNA的表达水平。结果　大鼠切除双侧卵巢后 ,其血清中雌二醇 ( 17.60± 1.0 2 )pmol/L和PRL( 2 .45± 0 .15 ) μg/L水平明显低于未切除卵巢组〔分别为 ( 5 8.5 6± 6.99) pmol/L和 ( 3 .2 2± 0 .17) μg/L〕(均P <0 .0 1) ,实验性自身免疫性甲状腺炎的发病率和甲状腺组织中炎细胞浸润程度也均较未切除卵巢直接诱发EAT组明显减轻 ,甲状腺组织中IFN γmRNA的表达水平 ( 0 .87± 0 .0 3 )较未切除卵巢直接诱发EAT组 ( 0 .99± 0 .0 0 )明显下降 (P <0 .0 5 ) ,而IL 10mRNA的表达水平 ( 0 .98± 0 .0 1)则高于未切除卵巢直接诱发EAT组 ( 0 .83± 0 .0 5 )。诱发为EAT的两组大鼠血清TGAb平均水平 ( 1.3 9± 0 .0 3 )明显高于非诱发EAT对照组的平均水平 ( 0 .18± 0 .0 0 )(P <0 .0 1)。结论　雌激素水平低下可     

ELISA检测脑膜炎球菌A群抗原的临床应用

对流行性脑脊髓膜炎(流脑)早期确诊是提高治愈率的关键。从病人体内分离病原菌是确诊的直接依据,但往往需时较长,阳性率不高。目前已有了不少新的诊断方法。本文应用 ELISA 法对临床诊断为流脑和非流脑病人的脑脊液标本进行了脑膜炎球菌 A 群抗原的检测,并探讨其临床应用价值。     

雷帕霉素纳米粒滴眼液联合环孢素A缓释膜治疗兔高危角膜移植术后免疫排斥反应的研究

Objective To evaluate the combined effect of topical rapamycin (RAPA) eye drop in nanometer vector and poly (lactic acid) (PLA) wafers of cyclospoirne A(CsA) in the prevention of acute allograft rejection after rabbit corneal transplantation. Methods It was an experimental study. RAPA was incorporated into the nanometer particles and CsA was incorporated into PLA wafers. A was syngeneic control whose both donor and recipient are New Zealand rabbit. Gray donor corneas were implanted into the 102 recipients of New Zealand albino rabbits with corneal neovascularization who were randomly divided into B, C, D, E, F, G 6 groups to receive the different types of therapy: B was no therapy control; C was eye drop of nanometer vector but no RAPA twice a day,28 days; D was PLA wafers in the anterior chamber of rabbit eyes but no drugs; E was 0.5% RAPA eye drop of nanometer vector twice a day,28 days; F was PLA wafers of CsA in the anterior chamber of rabbit eyes; G was PLA wafers of CsA in the anterior chamber of rabbit eyes and 0.5% RAPA eye drop of nanometer vector eye drop twice a day for 28 days together. Postoperative evaluation included slit-lamp biomicroscopy, histopathology and immunohistoiogy, Cytokines related with neovascularization and immunosuppression in the corneal tissue by RT-PCR. The graft survival was assessed by One-Way ANOVA and q test. Results Corneal allograft survival time: A (100.00±0.00), B ( 8.44±1.24), C (8.89±2.57), D (8.56±2.30), E (43.11±5.58), F (43.67±9.54), G (72.00±15.34)d. Group G led to a statistically significant prolongation of transplant survival and was superior than group E and F which was a statistical prolongation compared with group B, C and D (qGE=11.42, qGF=11.24,qEB=13.64, qEC=13.38, q<=13.46, qFB=13. 82, qFC=13.56, qFD=13.64; P<0.01). Immunohistopathologically, the grafts were subjected to an immune response contained a dense infiltrate of neutorphils,CD4+ and CD8+ T lymphocytes in the group B ,C and D. This cellular infiltrate was a significant reduction in group E,F,G. RT-PCR showed that the gene expression of IL-2 was inhibited earlier (3 days) in group F, G and VEGF gene expression being suppressed later (14 days) in group E, G. Conclusions Combined therapy with topical application of RAPA eye drop of nanometer vector and CsA PLA wafers can significantly prolong the survival of allograft at high-risk. Moreover, topical combined treatment of them is more effective, lower dosage, less side-effects and cheaper than the treatment with topical individual immunosuppressive drug.     

妊娠妇女血清中免疫球蛋白D的测定

免疫球蛋白D(IgD)在人体血清中含量极少,其免疫功能尚不十分清楚,它和人体的生理、病理状态之间的关系,国内外也     

传染性肝炎患者血清中Clq的测定

为了观察传染性肝炎发病过程中血清中Clq含量的变化,以探求传染性肝炎的自身免疫生病机制,本文应用火箭免疫电泳法测定了正常人和传染性肝炎患者血清中Clq的含量。     

碘对小鼠骨髓树突状细胞前体表型及功能影响

目的 探讨碘对小鼠树突状细胞(dendritic cell,DC)前体表型及功能的影响.方法 选雌性C57BL/6J小鼠40只,按碘摄入量随机分为适碘组(NI)、低碘组(LI)、10倍碘过量组(10HI)、50倍碘过量组(50HI)4组,喂养8个月后检测小鼠DC表面分子表达和培养上清中白细胞介素-12(interleukin-12,IL-12)水平以及DC刺激T细胞的增殖能力.结果 LI组小鼠DC表面分子CD40+CD11c+、CD80+CD11c+、CD86+CD11c+、MHC-Ⅱ+CD11c+在CD11c+细胞中所占比例均低于NI组小鼠,差异均有统计学意义(P<0.05);50HI组小鼠DC表面分子CD40+CD11c+、CD80+CD11c+、CD86+CD11c+、MHC-Ⅱ+CD11c+在CD11c+细胞中所占比例均高于NI组小鼠,差异均有统计学意义(P<0.05);LI组小鼠DC培养上清中细胞因子IL-12浓度为(275.8±32.6)pg/mL,低于NI组小鼠的(548.7±51.3)pg/mL(P<0.01);50HI组小鼠DC培养上清中细胞因子IL-12浓度为(963.2±83.4)pg/mL,高于NI组小鼠(P<0.01);LI组的刺激指数(SI)为(5.23±1.96),低于NI组小鼠的(8.61±2.15)(P<0.05);50HI组小鼠的SI为(12.38±2.61),高于NI组小鼠(P<0.05).结论 摄入一定水平的碘可诱导小鼠DC前体的增殖和成熟,提高机体的免疫功能.