免疫抑制的

Experiments on decalcification and activation of osteoinductive ability, comparison between the osteogenesis of demineralized bone matrix in orthotopic and in heterotopic sites, and correlation between immune response to allograft of bone and osteoinductive activity of the graft, were reported in this paper. 1. Syngeneic deminerolized bone matrix and the mixture of DBM with bone ash or acid-soluble protein extracted from demineralization was implanted into muscle pouch of mice, subsequently, the inhibition of DBM osteoinduction by bone ash or acid-soluble protein was demonstrated with histological and by means of alkaline phosphatase assay.

本文对脱钙处理使骨诱导活性表达的作用、脱钙骨基质植入不同部位的成骨表现，以及同种异体骨移植引发的免疫反应与骨诱导活性的内在关系三方面进行了研究：（1）在小鼠肌肉植入同系脱钙骨基质及其与脱钙所去除的骨矿盐和酸溶性蛋白混合物，碱性磷酸酶和组织学检查表明：骨矿盐和酸溶性蛋白具有抑制脱钙骨基质骨诱导活性的作用。

The problem is this: we simply eat too much. Excess sugar suppresses our immune system, causes us to become fat, and can play havoc with our emotions by exciting people to a state of jumpiness and then post-sugar depression.

问题在于：我们单纯的只是吃太多，过度的糖分却会抑制我们的免疫系统、造成我们过胖、或者影响情绪的起伏，像是过度的兴奋或者是摄取糖分后的沮丧感。

Methods The cells were divided into 5 treatment groups（10,25,50,75 and 100 μmol·L-1 QUE）, blank control and menstruum control group. The rat C6 cells were cultivated to 1×106·mL-1 in the RPMI 1640 medium, then added into 96 holes board with various doses of QUE by 3 holes per group,and MTT assay was used to observe the proliferation of the cells treated for 24,48 and 72 h. The change of cell cycle was also observed by flow cytometry after the cells were treated with 50 and 100 μmol·L-1 QUE for 48 h. The changes of the protein P53 and Bcl-2 of C6 cells treated with 50 μmol·L-1 QUE for 48 h were detected by immunocytochemical methods.

按QUE浓度分成10、25、50、75及100 μmol·L-15个处理组和空白对照组及溶剂对照组，大鼠脑胶质瘤C6细胞在RPMI 1640培养基中生长达1×106·mL-1后，在96孔板中分别加入上述浓度的QUE继续培养，每组设3复孔，作用24、48及72 h，采用MTT比色法检测QUE对大鼠脑胶质瘤C6细胞的增殖抑制情况，流式细胞术对50及100 μmol·L-1的QUE作用48 h的大鼠脑胶质瘤C6细胞进行周期分析，免疫组化法检测50 μmol·L-1的QUE作用48 h 的p53和bcl-2基因产物。

The journal publishes reviews covers the whole field of the biology and biochemistry of cancer, emphasizing oncogenes and tumor suppressor genes, growth-related cell cycle control signalling, carcinogenesis mechanisms, cell transformation, immunologic control mechanisms, genetics of human cancer, control of cell proliferation, genetic and molecular control of organismic development, rational anti-tumor drug design.

该杂志主要发表有关肿瘤生物学和生物化学的综述。其内容包括：致癌基因和肿瘤抑制基因，与生长有关的细胞周期控制的信号转导，致癌机理，细胞转化，免疫控制机理，人类癌症遗传学，细胞增殖的控制，组织发育的遗传和分子控制，合理的抗肿瘤药物设计等。

To produce the scientific evidence for developing and manufacturing new antitumor drugs.Methods: 1 The inhibitory effect on cell growth of Hela was measured by MTT assay in treated or untreated groups (3.125, 6.25, 12.5, 25, 50μg/ml TAM and control) for three different treatment times (24h, 48h and 72h).2 Apoptosis and cell cycle were measured by FCM in four experimental groups (0, 4, 16, 40μg/ml TAM) for 48h.3 Adopting Wright and Giemse's staining to observe the morphology of Hela cells which treated with 40μg/ml TAM.4 Using invasion experiment to detect the Hela cells'invasive abilities which treated with 40μg/ml TAM.5 The protein expressional levels of P-ERK, ERK, C-myc and Cyclin D1 in Hela cells untreated or treated with 4, 16, 40μg/ml TAM for 24h were measured by Western blot.6 Expression of anti-apoptotic gene bcl-2, apoptotic gene bax and MMP-9 in Hela cells of four experimental groups (0, 4, 16, 40μg/ml TAM for 24h), were observed by revers transcription PCR.7 The protein expression of P-ERK, ERK, Bcl-2 and Bax in Hela cells treated with 40μg/ml TAM for 24h observed by laser scanning microscopes.

1采用四甲基偶氮唑蓝法检测不同浓度北豆根总碱(3.125、6.25、12.5、25、50μg/ml)处理不同时间(24、48和72小时)对Hela细胞增殖反应的抑制作用。2采用流式细胞技术(flow cytometry，FCM)检测不同浓度北豆根总碱(0、4、16、40μg/ml)作用48小时，对Hela细胞凋亡及周期变化的影响。3瑞氏-姬姆萨染色后显微镜观察北豆根总碱(0、40μg/ml)作用24小时后Hela细胞形态学变化。4采用Transwell小室法检测北豆根总碱(0、40μg/ml)作用24小时后对Hela细胞侵袭性的影响。5采用免疫印迹方法检测不同浓度北豆根总碱(0、4、16、40μg/ml)作用24小时后，Hela细胞中磷酸化ERK、ERK、C-myc、CyclinD1的表达变化。6采用逆转录-聚合酶链反应(revers transcription PCR，RT-PCR)半定量检测北豆根总碱(0、4、16、40μg/ml)作用24小时，Hela细胞抗凋亡基因bcl-2、促凋亡基因bax、基质金属蛋白酶-9(MMP-9)的表达变化。7应用激光共聚焦显微镜(laser scanning microscope，LSM)观察北豆根总碱(0、40μg/ml)作用24小时后，Hela细胞内P-ERK、ERK、Bcl-2、Bax蛋白的表达变化。

According to the eresults described above, we preliminarily suggested that the pathogenic mechanism of Clonorchis sinensis may be related to activation of PKC and increased expression of γ-GTase.Praziquantel, not only can destroy adult worm directly, but also regulate γ-GTase activity. Furthermore, by inhibiting the expression of PKC, Praziquantel can elevate the repair of cells and reduce tumorigenesis. Further investigations are needed to dissect the detailed mechanism.

根据以上的实验结果，我们初步推测中华肝吸虫的致病机转可能和 PKC 的活化作用、γ-GTase 活性的表现有关，而驱虫药 Praziquantel 治疗中华肝吸虫，除了直接破坏虫体外，也可能会抑制 PKC 的表现进而调节γ-GTase 的活性，藉以提升细胞的免疫修复，而降低癌化的产生；唯其详细机转有待进一步探讨。

Methods: Mice were inoculated with tumor cells. Inhibitory effect of transfection with pCH510 on murine tumor origined from different inoculative dose and inhibiting effect of immediate transfection pCH510 after chemotherapy on tumor were observed, respectively. By cell culture technique, the influence of chemotherapeutic drug to activation of marcrophages and lymphocytes after i.p. injection of drug was observed. By cell counting method, the kinetics of the change of number of peripheral blood immunocytes induced by administration of chemotherapeutic drug was observed. The inhibitory effect of transfection with pCH510 five days after chemotherapy on murine tumor was observed.

采用瘤细胞接种建立小鼠肿瘤模型：通过基因转染，观察pCH510对不同接种量所形成的小鼠肿瘤的抑制作用以及小鼠肿瘤化疗后立即进行pCH510转染的抑瘤效果；采用细胞培养技术，观察小鼠体内注射化疗药物后，其对小鼠腹腔巨噬细胞和脾淋巴细胞激活功能的影响；采用细胞计数的方法，观察化疗药物所致小鼠腹腔巨噬细胞和外周血免疫细胞数量变化的动力学；另外小鼠肿瘤化疗后第5天进行pCH510转染，观察抑瘤效果。

F_D In vitro, their effects are also dramatically different from one another with only beta androstenetriol potentiating the cellular response by increasing lymphocyte activation and counteracting hydrocortisone immune-suppressive activity.

在体外，它们的作用也是彼此明显不同的，唯有雄甾烯三醇对淋巴细胞有强有力的细胞应答，并且抵消氢化考地松抑制免疫的活动。

As a kind of secondclass and selfdeveloped traditional medicine, cinobufotalin can regulate immunity, inhibit proliferation of tumor cells, antihepatitis B virus and is widely used on the clinic of antitumor, the treatment of chronic hepatitis B and other diseases.

华蟾素作为我国自行研制的二类新药，具有调节免疫、抑制肿瘤细胞增殖、抗乙肝病毒的药理作用，在抗肿瘤、治疗慢性乙型肝炎以及其他疾病的临床治疗上已经得到广泛的应用。

Objective To study the mechanism of the inbitory effect of matrine on central nervous. Methods In the present study, incubation of postnatal Wistar rat cortex neurons in culture with matrine at 0.5, 1.0, 2.0mmol/L was carried out to have knowledge of the effect of matrine on the expressions of GABAR.

目的 观察苦参碱对鼠原代培养皮质神经元γ-氨基丁酸受体蛋白表达的影响，探讨苦参碱抑制中枢的作用机制方法对Wistar新生大鼠原代培养皮质神经元分别给予剂量 0.5、1.0、2.0mmol/L培养基的苦参碱进行药物干预，4h后用细胞免疫组化方法测定GABAR的蛋白表达。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。