CCK-8对内毒素血症小鼠腹腔巨噬细胞B7.1和B7.2表达及协同刺激功能的影响

目的： 探讨八肽胆囊收缩素（CCK-8）对内毒素血症小鼠腹腔巨噬细胞B7.1和B7.2表达及其协同刺激活性的影响。方法: 将BALB/c小鼠随机分组（n=4）,分别腹腔注射生理盐水（0.2-0.3 mL/mouse），LPS（100 μg/mouse）和/或CCK-8 (5 nmol/mouse)及CR1409（100 μg/mouse）、CR2945（100 μg/mouse）。12 h后收集并纯化腹腔巨噬细胞。采用流式细胞术分析细胞表面B7.1和B7.2含量的变化。用免疫磁珠从小鼠脾细胞分离CD4+T细胞，按4∶1数量比与上述处理的腹腔巨噬细胞共同体外培养，同时加入ConA 5 mg/L，采用［³H］掺入法测定CD4+T细胞增殖，反映巨噬细胞的协同刺激活性。结果: 整体应用CCK-8作用小鼠腹腔巨噬细胞，与对照组相比，CCK-8可上调静息小鼠腹腔巨噬细胞B7.2的表达，而对B7.1的表达则无影响；并且CCK-8使CD4+T细胞［³H］-TdR的掺入率升高，即促进其增殖，增强巨噬细胞的协同刺激活性。CCK-8降低LPS活化的内毒素血症小鼠腹腔巨噬细胞B7.1和B7.2的表达并且降低CD4+T细胞的［³H］-TdR掺入率，即抑制其增殖，抑制其协同刺激活性。CR1409及CR2945均能逆转CCK-8的上述作用，且CR1409的作用较CR2945更明显。结论: CCK-8通过上调巨噬细胞B7.2表达而增强其协同刺激活性；并且降低LPS活化的内毒素血症小鼠腹腔巨噬细胞B7.1和B7.2的表达，抑制其协同刺激活性。该作用由CCK1R及CCK2R共同介导，其中CCK1R起主要介导作用。     

腰椎骶化3步推拿治疗60例

背景 : 腰椎 骶 化患 者 常伴 有腰 骶 部 疼 痛 和 下 肢 放 射 性 疼 痛 ,影响患 者 的工 作和 生 活,寻找 一 种 有 效 的 治疗 这 种 疾 病的 方 法。目的 :探 讨 3步 推拿 治 疗腰 椎骶 化 患 者 的 临 床 疗效 。设 计 :以 患 者 为 研究 对 象 的 病例 分 析,观 察 性研 究 。单 位 :一 所 市 级 的中 医 院。对 象 : 研 究 对 象 为 1993/1998广 东 省 佛 山 市 三 水 区 中 医 院 收治 的 腰 椎 骶 化 患 者 ,纳 入 标 准 :临 床 表 现 均 有 腰 骶 部 疼 痛 和 下肢 放 射 性 疼 痛 且 自 愿 接 受 治 疗 。 共 纳 入 60例 ,其 中…     

损伤控制性手术与常规Ⅰ期手术用于肝胆外科创伤患者中的临床对比

目的 对比分析损伤控制性手术与常规Ⅰ期手术应用于肝胆外科创伤患者治疗中的临床效果.方法 2011年9月至2013年9月收治的肝胆外科创伤患者中随机选择89例进行研究,随机分为观察组（45例）和对照组（44例）,分别给予损伤控制性手术与常规Ⅰ期手术治疗.观察两组的治疗效果和并发症情况,并进行比较.术后随访1～6个月,采用电话随访的方式,了解患者的术后情况.随访率为100％.使用SPSS 15.0软件进行统计分析,计量资料予以t检验,计数资料予以x2检验.P ＜0.05则视为差异有统计学意义.结果 观察组的手术时间和住院天数分别为（64.2±12.7） min和（27.3±6.4）d,显著短于对照组的（98.4±24.6） min和（42.6±11.2）d,（t=8.64,6.83,均P＜0.05）.观察组的并发症发生率为13.3％ （6/45）,显著低于对照组的27.3％（12/44）,差异有统计学意义（x2 =9.11,P＜0.05）.结论 较之常规Ⅰ期手术治疗,利用损伤控制性手术治疗肝胆外科创伤患者可以获得较好的临床效果,且有效降低并发症发生率,疗效确切,值得推广.     

转染CD40配体的卵巢癌细胞株OVHM抗卵巢癌肝转移机制的研究

Objective To examine the in vivo anti-metastatic effect of enhanced expression of CD40L cDNA in murinc ovarian cancer OVUM cells (CD4OL-OVHM) injected into the spleen on liver metastasis in mice. Methods OVUM cells were inoculated into the spleen of 6 ～ 8 week-old female B6C3F1 (C57BL/6N × C3H/He) mice. The established liver metastasis was identified by histopathology (HE staining). OVUM cells, DNA-pMKITneo-OVHM cells or CD40L-OVHM cells were inoculated into the spleen of female B6C3F1 mice and the expressions of CD11c in splenic cells were detected by flow cytometry. The specific cytotoxicity of splenic cells was detected by MTT assay, and the serum cytokines of IFN-γ, TNF-α, IL-12, IL4 and IL-10 of the mice were measured by enzyme linked immunoabsorbent assay. The liver metastases and the survival time of the mice were also recorded. Results The mouse models with liver metastasis by injecting tumor cells into the spleen of mice were established. The expression of CD11c and the specific killing rote in CD40L-OVHM cells group was significantly higher than that in the OVHM cells group and DNA-pMKITneo-OVHM cells group. The expressions of IFN-γ, TNF-α and IL-12 in the CD40L-OVHM cells group were much more increased than OVHM cells group and DNA-pMKITneo-OVHM cells group, but the expressions of IL-4 and IL-10 in the CD40L-OVHM cells group were decreased significantly (P < 0.05). The average weights of livers and spleens of mice in CD40L-OVHM cells group were significantly lower than those of DNA-pMKITneo-OVHM cells group and OVHM cells group. The survival time of mice in CD40L-OVHM cells group was also significantly longer than that in the OVHM cells group and DNA-pMKITneo-OVHM cells group (P < 0.05). Conclusion The data directly demonstrate that the expression of CD40L in ovarian cancer cells (CD40L-OVHM) can enhance the proliferation and differentiation of dendritic cells in the spleen and induce specific cytotoxic effect of T cells in the spleen, and may regulate the immune function of peripheral blood cells and the immune balance between Thl cells and Th2 cells, which maybe the possible mechanism induced by CD40L in mice inhibiting the development of liver metastasis.     

流感疫苗:面对抗原漂移的挑战

流感一直影响着全球,给人类带来了巨大的痛苦和经济负担.抗原漂移导致反复的流感流行.大量研究表明,病毒抗原变化累积到一定程度能使病毒再感染同一宿主.为此,流感疫苗的成分要每年更新以保证疫苗的有效性;然而,由于疫苗成分的确定有时间上的限制,人们难以做到识别出每一个有意义的抗原漂移.疫苗不匹配会影响其效果,导致病毒传播和经济损失,1997-1998年流感季节就是如此.为了应对抗原漂移,需要研制能够抵抗异源变异株的广谱保护作用疫苗,以预防季节性、流行性和大流行流感.目前,除了应用佐剂外,正在兴起的研究还包括研发通用疫苗和利用交叉保护性免疫机制的疫苗.     

流感疫苗:面对抗原漂移的挑战

流感一直影响着全球,给人类带来了巨大的痛苦和经济负担.抗原漂移导致反复的流感流行.大量研究表明,病毒抗原变化累积到一定程度能使病毒再感染同一宿主.为此,流感疫苗的成分要每年更新以保证疫苗的有效性;然而,由于疫苗成分的确定有时间上的限制,人们难以做到识别出每一个有意义的抗原漂移.疫苗不匹配会影响其效果,导致病毒传播和经济损失,1997-1998年流感季节就是如此.为了应对抗原漂移,需要研制能够抵抗异源变异株的广谱保护作用疫苗,以预防季节性、流行性和大流行流感.目前,除了应用佐剂外,正在兴起的研究还包括研发通用疫苗和利用交叉保护性免疫机制的疫苗.     

转染CD40配体的卵巢癌细胞株OVHM抗卵巢癌肝转移机制的研究

Objective To examine the in vivo anti-metastatic effect of enhanced expression of CD40L cDNA in murinc ovarian cancer OVUM cells (CD4OL-OVHM) injected into the spleen on liver metastasis in mice. Methods OVUM cells were inoculated into the spleen of 6 ～ 8 week-old female B6C3F1 (C57BL/6N × C3H/He) mice. The established liver metastasis was identified by histopathology (HE staining). OVUM cells, DNA-pMKITneo-OVHM cells or CD40L-OVHM cells were inoculated into the spleen of female B6C3F1 mice and the expressions of CD11c in splenic cells were detected by flow cytometry. The specific cytotoxicity of splenic cells was detected by MTT assay, and the serum cytokines of IFN-γ, TNF-α, IL-12, IL4 and IL-10 of the mice were measured by enzyme linked immunoabsorbent assay. The liver metastases and the survival time of the mice were also recorded. Results The mouse models with liver metastasis by injecting tumor cells into the spleen of mice were established. The expression of CD11c and the specific killing rote in CD40L-OVHM cells group was significantly higher than that in the OVHM cells group and DNA-pMKITneo-OVHM cells group. The expressions of IFN-γ, TNF-α and IL-12 in the CD40L-OVHM cells group were much more increased than OVHM cells group and DNA-pMKITneo-OVHM cells group, but the expressions of IL-4 and IL-10 in the CD40L-OVHM cells group were decreased significantly (P < 0.05). The average weights of livers and spleens of mice in CD40L-OVHM cells group were significantly lower than those of DNA-pMKITneo-OVHM cells group and OVHM cells group. The survival time of mice in CD40L-OVHM cells group was also significantly longer than that in the OVHM cells group and DNA-pMKITneo-OVHM cells group (P < 0.05). Conclusion The data directly demonstrate that the expression of CD40L in ovarian cancer cells (CD40L-OVHM) can enhance the proliferation and differentiation of dendritic cells in the spleen and induce specific cytotoxic effect of T cells in the spleen, and may regulate the immune function of peripheral blood cells and the immune balance between Thl cells and Th2 cells, which maybe the possible mechanism induced by CD40L in mice inhibiting the development of liver metastasis.     

CCK-8对LPS作用下巨噬细胞B7.1和B7.2表达及其协同刺激功能的影响

目的探讨八肽胆囊收缩素(CCK-8)对LPS活化的巨噬细胞B7.1和B7.2表达及其协同刺激功能的影响。方法用CCK-8(10-12~10-6)mol.L-1和(或)脂多糖(LPS)孵育小鼠腹腔巨噬细胞,采用流式细胞术分析细胞表面B7.1和B7.2含量的变化,用免疫磁珠从小鼠脾细胞分离CD4+T细胞,按4∶1数量比与腹腔巨噬细胞[预先用LPS、CCK-8和(或)抗B7.1抗体、抗B7.2抗体、CCK1R拮抗剂CR1409、CCK2R拮抗剂CR2945孵育24h]共同体外培养,同时加入ConA5mg.L-1,采用3H参入法测定CD4+T细胞增殖反映巨噬细胞的协同刺激活性。结果CCK-8可以下调LPS诱导的巨噬细胞的B7.1和B7.2表达,抑制LPS活化的巨噬细胞的协同刺激活性。CCK-8的作用呈剂量依赖性,最大效应剂量在(10-7~10-9)mol.L-1之间。CR1409及CR2945均能逆转CCK-8的上述作用,且CR1409的作用较CR2945更明显。抗B7.1抗体和抗B7.2抗体可减轻LPS活化的巨噬细胞协同刺激活性。结论CCK-8通过下调LPS诱导的巨噬细胞B7.1和B7.2表达而抑制其协同刺激活性,该作用由CCK1R及CCK2R介导,其中CCK1R起主要介导作用。     

针药结合治疗内分泌失调性不孕症23例

女子婚后,配偶生殖功能正常,夫妇同居2年以上未避孕而不怀孕者,称为原发性不孕;曾孕育过,并未采取避孕措施,又间隔2年以上未再孕,称为继发性不孕;统称不孕症。笔者近3年应用针药结合治疗不孕症23例,疗效满意,报道如下。1临床资料1·1一般资料:23例患者均为门诊病人,年龄26~32岁     

应用氟尿嘧啶治疗胃癌患者预后与其癌组织中尿嘧啶核苷磷酸化酶基因的高表达相关性研究

目的:分析尿嘧啶核苷磷酸化酶基因表达水平与胃癌、肺癌和结肠癌的预后相关性。方法:采用RT-PCR法检测了28例胃癌、14例肺癌和22例结肠癌组织及其远癌正常组织中尿嘧啶核苷磷酸化酶(UP)基因的表达。结果:对28例胃癌组织及其远癌正常组织检测发现,有20例UP基因的表达比正常组织增高,另8例UP基因的表达比正常组织低或二者相等。所有这些胃癌患者均在手术前、后接受了氟尿嘧啶的治疗。胃癌组织中UP基因表达增高的患者比UP基因表达正常或降低的患者有较好的生存率;相反,大多数的结肠癌(16例)和所有的肺癌患者未接受氟尿嘧啶的治疗,且大部分的结肠癌(12例)和肺癌(10例)样本显示癌组织中UP基因呈低表达。肺癌和结肠癌组织相对于其远癌正常组织中UP基因的不同表达与患者的生存率不相关。结论:胃癌组织相对于其远癌正常组织的UP基因的表达水平可作为判断接受氟尿嘧啶的治疗的胃癌患者预后的一个指标。