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objective to observe the antitumor activities of different solution extracts of plumbago zeylanica l.in vitro.method mtt method was used to detect the inhibitory effects on four kinds of cancer cells.results chloroform extracts had significant inhibitory effects on the breast cancer cell(bre-04),the nerve cancer cell(n-04) and the lung cancer cell(lu-04),ic50 were 0.2699mg/ml and 0.2634mg/ml,0.4961mg/ml respectively.ic50 of chloroform extract on the hepg2 was 0.9379mg/ml.ic50 of petroleum ether extracts on bre-04,n-04,lu-04 and hepg2 was 0.5902mg/ml,0.5725mg/ml,0.7938mg/ml,0.6374mg/ml;ethyl acetate extracts had fairly inhibitory effects on the lu-04,ic50 was 0.7343mg/ml;n-butanol extracts and water-solubility extracts had notsignificant inhibitory effects on the four kinds of cancer cells.conclusion the antineoplastic effective parts of plumbago zeylanica l.were chloroform and petroleum ether extracts.
目的 探讨白花丹体外抗肿瘤作用的活性部位。方法 mtt染色法对白花丹五种溶剂提取物体外抗肿瘤活性进行了初步的研究。结果氯仿提取物对乳腺癌细胞(bre-04)、神经癌细胞(n-04)、肺癌细胞(lu-04)有较好的抑制生长作用,ic50分别为0.269 9 mg/ml、0.263 4 mg/ml、0.496 1 mg/ml,对肝癌细胞hepg2抑制作用差, ic50为0.937 9 mg/ml;白花丹石油醚提取部位对乳腺癌细胞(bre-04)、神经癌细胞(n-04)、肺癌细胞(lu-04)、肝癌细胞hepg2的ic50分别为0.590 2 mg/ml、0.572 5 mg/ml、0.793 8 mg/ml、0.637 4 mg/ml;乙酸乙酯提取物对肺癌细胞(lu-04)有一定的抑制作用,ic50为0.734 3 mg/ml;水溶性提取物以及正丁醇提取物无明显抑制肿瘤作用。结论白花丹氯仿提取部位、石油醚提取部位体外抗肿瘤作用较好,值得对其提取部位进一步分离纯化并研究其抗肿瘤作用机制。
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AIM: To isolate bioactive secondary metabolites from the fruits of Schisandra rebriflora Rehd. et. Wils and study their effects on HIV-1 infectivity. METHODS: Inhibition of syncytia formation, HIV-1 reverse transcriptase and protease, protection of HIV-1 infected cells, level of HIV-1 p24 antigen,blockage of fusion were detected. RESULTS: A lignan compound, named rubrifloralignan A, was first isolated as a natural product with modest inhibition effects on syncytium formation and HIV- 1 replication and could protect HIV-1 infected cells with weak inhibition effects on fusion and RT, but it showed no effects on the replication of HIV-1 chronic H9 and PR. CONCLUSION: Rubrifloralignan A is an efficient anti-HIV-1 product with effect on early stage of HIV-1 replication.
目的:从红花五味子果实中寻找活性代谢产物,研究其抗HIV—1活性和作用机制方法:通过合胞体抑制、HIV-1感染细胞保护、HIV—1p24抗原测定、融合阻断、逆转录酶和蛋白酶活性分析等实验,检测分离化合物的抗HIV—1活性并探讨其作用机制一结果:红花五味子甲素能够抑制病毒诱导的合胞体形成,保护病毒感染细胞,抑制病毒在细胞内的复制对HIV-1感染细胞与正常CD4^+细胞间的融合,逆转录酶活性有一定的抑制作用但是红花五味子甲素不抑制病毒在慢性感染细胞中的复制,也不抑制蛋白酶的活性、结论:首次从天然产物中分离得到红花五味子甲素,它对HIV—1病毒复制早期具有抑制作用
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Studies also indicated that genistein exsists not only in soybeans but also in many kinds of plants such as vegetables and fruits.As a potential anticancer agent, the actional mechanisms of genistein mainly includes as follows:First, genistein can depress the activity of protein tyrosine kinase and transduction pathways for the phosphorylation of receptors and mitosis signal. So genistein can lead to cells' proliferation depressed. Second, genistein has minimal effects of phytoestrogens. It can be combined with estrogen receptor and improve the synthesis of cellular sex hormone binding glulobin, and improve the activity of UDP-glucuronyl transferase. Through these pathways, it can inhibit the cell activity of breast cancer and prostate cancer.
作为一个很有潜力的抗肿瘤物质,三羟异黄酮的作用机制主要包括:①抑制蛋白酪氨酸激酶活性,可阻抑PTK引起的受体磷酸化和有丝分裂的信号传递,导致癌细胞增殖受抑;②弱雌激素作用:可通过与体内雌激素受体结合,并可增加细胞内性激素结合球蛋白的合成,增加UDP-葡糖醛酸转移酶的活性等途径抑制乳腺癌和前列腺癌细胞活性;③拓扑酶Ⅰ和Ⅱ抑制剂,抑制细胞活性;④上调细胞周期性负性调节因子P21WAF1/CIP1的表达,使之负性调节因子作用增强;⑤可阻止胰岛素样生长因子-Ⅰ、肝细胞生长因子和神经生长因子的作用而抑制肿瘤生长;⑥其他:抗氧化作用、抑制热休克蛋白、诱导细胞凋亡、抑制新生血管生成和抑制多种耐药相关蛋白等。
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The ELISA titre was 1:2000.By cell fusion, 46 hybridoma cell lines were screened,and 10 lines were cloned with limited dilution method.16 lines secreting anti-bFGF monoclonal antibody were been developed, and 2 lines targeted fusion protein. Sensitive ELISA and dot-ELISA for bFGF was developed with this mAb. The detection limit of them were 0.1 ng/well and 0.5 ng/well. The expression level of anti-bFGF mAb by different rebuilt engineering cells were identified by western blot and to direct rebuild recombiment engineering cell. The dose and character of anti-bFGF mAb inhibiting bFGF biology activity were searched by 3T3 cell line. Searching 20 tissue of liver cancer, liver cancer cell lines and general tissue of liver, finding bFGF were highly expressed in tissues of liver cancer and liver cancer cell lines. Affinity chromatography purifying bFGF was set up by mAb binging CNBr-pepharose 4B, and the purification was 95%. We found that the titer of anti-bFGF antibody was very high in serum of neuropathic amyotrophia.
应用细胞融合制备46株杂交瘤,对其中10株进行克隆化,获得bFGF特异单抗16株,2株针对融合蛋白;应用该单抗建立了0.1ng/孔灵敏度的ELISA,0.5ng/孔敏度的斑点ELISA;用Western-blotting鉴别了经改造不同工程菌蛋白表达,指导重组工程菌改造;用3T3细胞培养研究了单抗抑制bFGF生物学活性的剂量和特点;合作研究了20例肝癌、肝癌细胞株和正常肝组织,发现前者bFGF高表达;应用单抗偶联CNBr-sepharose 4B建立了小量免疫亲和层析纯化bFGF,纯度达到95%;发现神经性肌萎缩患者血清中含有高滴度的bFGF抗体,已有10多家单位引用单抗或进行合作。
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Wenxin capsule can promote endolethial cells releasing CO and synthesing 〓, enhance activity of HO, induce angiectasis through activating guanylic cyclase and adenglate cyclate of intracellar of vessel smooth muscle cell to enhance content of intracellar cGMP and AMP. 3. Wenxin capsule can inhibit releasing of platelet activiting factor 〓 which inhibit platelet aggregation and have antithrombosis function. 4. Wenxin capsule can promote activity of t-PA, reduce activity of PAI-1, strengthen fibrinolytic function, therefore inhibit fibrin disposition. 5. Wenxin capsule can inhibit synthesis of smooth muscle cellular DNA. Its function don't kill it directly but prevent transformation from period Go to peried S. 6. Wenxin capsule is an effective prescription of anti-coronary atherosclerosis atherosis. The results of image pattern analysis tastifies that area of lipid plaque in treating group reduce 54% and 58% in contrast with that in control group. The results of light, electro- microscopy show that structure of endolethial cell and smooth muscle cell in treating group is more integral than that in control group.
其作用机制之一是由于该药具有良好的调脂降脂作用,其不仅能明显降低血清LDL-c及升高HDL-c含量,且能有效阻止TC沉积于血管壁,从而保护内皮细胞结构完整;此外,温心胶囊尚具有明显的抗氧化作用,该药不仅能明显降低血浆LPO含量,且能提高SOD活性,同时其对血红素在细胞内代谢的调节作用也参与了抗氧化过程。2 温心胶囊能明显促进内皮细胞释放CO及合成〓,提高HO活性,通过激活血管平滑肌细胞内鸟苷酸环化酶及腺苷酸环化酶引起细胞内cGMP、AMP浓度增加而引起血管舒张。3 温心胶囊能明显抑制血小板激活因子〓的释放,从而抑制血小板聚集,抗血栓形成。4 温心胶囊能明显提高t-PA活性,降低PAI-1活性,增强纤溶功能,从而抑制纤维蛋白沉积。5 温心胶囊能明显抑制平滑肌细胞DNA合成,其抑制作用不是直接杀伤抑制,而是阻止细胞由Go期向S期转化。6 温心胶囊是抗冠状动脉粥样硬化的有效制剂,图象分析结果证实,该药治疗组脂斑面积比对照组缩小了54%和58%,光电镜结果显示内皮细胞及平滑肌细胞结构较为完整。
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And the different concentrations of natural monoclonal anti-keratin antibody IgM 3B4 were incubated with the mixed suspenions of Candida albicans yeast phase with malpighian cells, human buccal epithelial cells, endothelial cells of fetal umbilical vein, respectively, to observe the action of natural monoclonal anti-keratin antibody IgM 3B4 to the adhesion of Candida albicans to malpighian cells, human buccal epithelial cells and endothelial cells of fetal umbilical vein.
结果:与对照组比较,不同浓度的单克隆天然抗角蛋白抗体IgM3B4均能抑制白念珠菌芽管生成,并且抗体浓度越高,抑制白念珠菌芽管形成的作用越明显;同时单克隆天然抗角蛋白抗体IgM3B4能够显著减少白念珠菌与角质形成细胞、上皮细胞、内皮细胞的粘附,其抑制作用与单克隆天然抗角蛋白抗体IgM3B4的浓度呈正相关。
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Results:(1) FSN can inhibit secondary joints swelling and multi-arthritis evidently, improve the whole condition of rats; at the same time, it can also lighten the synovial inflammation and hyperplasia of lesion joints distinctly, and prevent the joint cartilage and bone from destruction; the collective efficiency of FSN is better than TWP.(2) FSN can raise AA rats low LTT of spleen to normal nearly, remedy the disorder of Th / Ts and Thl / Th2 cells balance in peripheral blood, restrain exorbitant TNF- a ? IL-1 produced by PM O , thereof exert anti-inflammatory and immunoregulation effect.(3) Inside the lesion joints, FSN can depress abnormal hyper-expression of TNF- a mRNA and NF-kB in synovial tissues, as well as advance the expression of Caspase-3 (a proteolytic enzyme of apoptosis), reduce synovial immflamination and proliferation.(4) FSN can lower the expression of VEGF in synovial tissue,reduce neogenetic veins, so inhibit the growth of pannus tissue and the damage of cartilage and bone by that.(5) The above effect of FSN are in proportion to its dosage.Conclusions: FSN has inhibitory effects on symptom and condition of experimental RA, which is better than TWP as a whole.
结果:(1)FSN有明显的抗炎作用,可显著抑制AA大鼠足跖肿胀与多关节炎,改善大鼠的全身情况,同时明显减轻病变关节滑膜炎症与增生,防止关节软骨及骨质的破坏,其综合作用优于TWP;(2)FSN还能使AA大鼠低下的脾LTT恢复至接近正常,纠正外周血中T细胞亚群Th/Ts及Th1/Th2平衡紊乱,抑制大鼠PHφ过高的TNF-α、IL-1分泌,而发挥抗炎和免疫调节作用;(3)在病变关节局部,FSN能显著抑制AA大鼠滑膜细胞异常增高的TNF-αmRNA的表达,降低滑膜组织中NF-kB表达,并增加凋亡蛋白酶Caspase-3表达,从而抑制滑膜的炎症与增殖;(4)FSN还可下调滑膜组织中VEGF表达,减少血管新生,由此抑制血管翳的形成及其对软骨和软骨下骨的侵蚀;(5)FSN的上述作用皆呈现一定的量效依赖关系,高剂量组作用优于低剂量组。
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FSN can raise AA rats low LTT of spleen to normal nearly, remedy the disorder of Th/Ts and Th1/Th2 cells balance in peripheral blood, restrain exorbitant TNF-α、IL-1 produced by PMφ, thereof exert anti-inflammatory and immunoregulation effect.(3) Inside the lesion joints, FSN can depress abnormal hyper-expression of TNF-αmRNA and NF-kB in synovial tissues, as well as advance the expression of Caspase-3 (a proteolytic enzyme of apoptosis), reduce synovial immflammation and proliferation.(4) FSN can lower the expression of VEGF in synovial tissue, reduce neogenetic veins, so inhibit the growth of pannus tissue and the damage of cartilage and bone by that.(5) The above effect of FSN are in proportion to its dosage. Conclusions: FSN has inhibitory effects on symptom and condition of experimental RA, which is better than TWP as a whole.
结果:(1)FSN有明显的抗炎作用,可显著抑制AA大鼠足跖肿胀与多关节炎,改善大鼠的全身情况,同时明显减轻病变关节滑膜炎症与增生,防止关节软骨及骨质的破坏,其综合作用优于TWP;(2)FSN还能使AA大鼠低下的脾LTT恢复至接近正常,纠正外周血中T细胞亚群Th/Ts及Th1/Th2平衡紊乱,抑制大鼠PMφ过高的TNF-α、IL-1分泌,而发挥抗炎和免疫调节作用;(3)在病变关节局部,FSN能显著抑制AA大鼠滑膜细胞异常增高的TNF-αmRNA的表达,降低滑膜组织中NF-kB表达,并增加凋亡蛋白酶Caspase-3表达,从而抑制滑膜的炎症与增殖;(4)FSN还可下调滑膜组织中VEGF表达,减少血管新生,由此抑制血管翳的形成及其对软骨和软骨下骨的侵蚀;(5)FSN的上述作用皆呈现一定的量效依赖关系,高剂量组作用优于低剂量组。
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Results Trastuaumab inhibited cell proliferation, colony formation, and decreased or eliminated the levels of two uncharacterized phospho-proteins ( molar weight about 90 000 and 40 000) in SKBR3 cells shedding high level of HER-2 ECD expression.
结果高HER-2 ECD水平的SKBR3细胞生长及克隆形成率明显被曲妥珠单抗抑制,在相对分子质量为90000和40000左右分别有1条未知磷酸化蛋白明显降低或基本消失,而细胞生长及克隆形成率未受影响的SKOV3细胞中此蛋白无明显变化。
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(1) Oxidative/antioxidative reactions, inflammatory reactions, apoptosis in lung are involved in the pathogenesis of HILI;(2) ABX, rHuEPO have protective effects on HILI respectively;(3) Hyperoxia can increase VILI in rats, but has little effects with low tidal volume mechanical ventilation.
结论(1)氧化抗氧化失衡,炎症反应,肺内细胞凋亡参与了高氧所致成年大鼠肺损伤的过程;(2)ABX通过抗炎、抗氧化、抑制细胞凋亡作用对成年大鼠高氧肺损伤具有保护作用;rHuEPO通过抗炎、抗氧化、抑制细胞凋亡及一定程度的抗纤维化作用对成年大鼠高氧肺损伤具有保护作用;(3)高浓度氧能明显加重大鼠通气机所致肺损伤,而高浓度氧对小潮气量通气影响较小。
- 更多网络解释与抗抑制相关的网络解释 [注:此内容来源于网络,仅供参考]
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antacid:抗酸剂
碱性抗酸剂( antacid ) 氢氧化铝、铝碳酸镁等及其复方制剂质子泵抑制剂 (PPI) 奥美拉唑 20mg qd( 一 ) 抑制胃酸药物溃疡的愈合与抑酸治疗的强度和时间成正比.
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metabolic antagonism:代謝拮抗 代谢抑制物(抗代谢物)
message 信息 信息 | metabolic antagonism 代謝拮抗 代谢抑制物(抗代谢物) | metabolic degradation 代謝性降解 代谢性降解
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antagonist:拮抗物
凡是能使另一种化学物的生物学作用减弱的物质称为拮抗物(antagonist). 在毒理学或药理学中,常以一种物质抑制另一种物质的毒性或生物学效应,这种作用也称为抑制作用(inhibition). 例如,阿托品对胆碱酷酶抑制剂的拮抗作用;
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antidiuretic hormone:抗利尿激素 (后叶)加压素
antidiuresis | 制尿, 抑制尿分泌 | antidiuretic hormone | 抗利尿激素 (后叶)加压素 | antidiuretic | 尿分泌抑制剂, 抗利尿剂 抑制尿分泌的
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immunosuppressive therapy:免疫抑制治疗
三,免疫抑制治疗 再障发病有免疫因素介入,此是免疫抑制治疗(immunosuppressive therapy)的理论基础.常用的免疫抑制剂有抗胸腺细胞球蛋白(ATG)或抗淋巴细胞球蛋白(ALG)和环孢素.主要用于急性或重型再障治疗,单独或序贯应用,有效率50%~70%.联合用药效果优于单一用药,
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inhibited oil:抑制油,抗氧化剂油
inhibited admiralty metal | 防腐蚀海军金属 | inhibited oil | 抑制油,抗氧化剂油 | inhibiting action | 阻止作用,抑制作用
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inhibition:抑制(作用)
在毒理学或药理学中,常以一种物质抑制另一种物质的毒性或生物学效应,这种作用也称为抑制作用(inhibition). 例如,阿托品对胆碱酷酶抑制剂的拮抗作用;二氯甲烷与乙醇的拮抗作用. 独立作用(independent effect)指多种化学物各自对机体产生不同的效应,
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competitive inhibition:競爭性抑制 竞争性抑制
competitive antagonism 競爭性拮抗 竞争性拮抗 | competitive inhibition 競爭性抑制 竞争性抑制 | complement 補體 补体
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uncompetitive inhibition:抗竞争性抑制
uncompetitive enzyme inhibition 无竞争性酶抑制 | uncompetitive inhibition 抗竞争性抑制 | uncompleted contract 未完成的合同,未完成履行的契约
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antiplatelet:抗血小板
2.1 抗血小板(Antiplatelet)治疗抗血小板药是在缺血性卒中预防和治疗的众多药物中研究最充分、证据最多的一类药物. 抗血小板药主要包括血栓素A2抑制剂(阿司匹林)、腺苷二磷酸(ADP)受体拮抗剂(氯吡格雷和噻氯匹定)、磷酸二酯酶抑制剂(双嘧达莫)、糖蛋白(GP)IIb/IIIa受体阻滞剂(阿昔单抗)等.