鸟氨酸

niǎo ān suān
  • ornithine;ornithin
鸟氨酸鸟氨酸
鸟氨酸[niǎo ān suān]
  1. CaM水平上调不仅增强了谷氨酸途径在脯氨酸合成中的贡献,而且活化了脯氨酸合成的鸟氨酸途径。

    Both glutamate and ornithine pathways of proline biosynthesis were stimulated by CaM under osmotic stress .

  2. 二甲基苯蒽对小鼠皮肤表皮鸟氨酸脱羧酶和转化生长因子βmRNA水平的影响

    Effects of 7,12-Dimethylbenz [ a ] Anthracene on the Levels of Ornithine Decarboxylase and Transforming Growth Factor - β mRNA in Mouse Epidermis

  3. 暂时性脑缺血诱导c-fos原癌基因和鸟氨酸脱羧酶基因表达

    Induction of expression of proto-oncogene c fos and ornithine decarboxylase genes by transient cerebral ischemia

  4. 因此,这种脯氨酸积累的增强效应是CaM对两条脯氨酸合成途径共同作用的结果。渗透胁迫下,CaM对鸟氨酸途径的促进作用略大于谷氨酸途径。

    It seems that the Orn pathway is more regulated by CaM than Glu pathway in proline accumulation of transgenic tobacco under osmotic stress .

  5. 9例DM患者的谷氨酸、组氨酸、磷酸丝氨酸和氨值升高,鸟氨酸、谷氨酰胺无变化。

    Ornithine and glutamine had no change . Glutamic acid , histidine , phosphoserine , and ammonia of 9 patients with DM were increased .

  6. 二胺及其衍生物对体内小鼠S180鸟氨酸脱羧酶活性的影响

    Effects of Diamines and Their Derivatives on Activities of Ornithine Decarboxylase in Mouse Sarcoma 180 in vivo

  7. 方法自临床各呼吸道疾病病人选取分离菌株,并经APINH进行菌种鉴定的194株副流感嗜血杆菌,按其对吲哚、尿素、鸟氨酸的利用情况进行分型。

    Methods 194 isolates were taken from patients with respiratory infections and identified by API NH . These strains were classified according to the indole .

  8. MNNG对日本血吸虫成虫细胞鸟氨酸脱羧酶活性作用的初步研究

    Effect of MNNG on Ornithine Decarboxylase Activity in Cells from Adult Schistosoma japonicum

  9. 新生牛肝中三种低分子化合物牛磺酸、鸟氨酸、肌肽对HL-60细胞凋亡的诱导作用

    The induction apoptosis of HL-60 cells by low molecular weight compounds of taurine , ornithine and carnosine from new born calf liver

  10. 黄芪注射液通过激活鸟氨酸脱羧酶促进IEC-6细胞分化的研究

    Effect of Astragalus Injection in Promoting IEC-6 Cell Differentiation through Activating Ornithine Decarboxylase

  11. 二氟甲基鸟氨酸对人肺癌细胞生长特性的影响及其相关基因ALT-04(ag)表达调控

    Effect of Alpha-difluoromethylornithine on Growth Characteristics and Expression of ALT-04_ ( ag ) Gene of Human Lung Carcinoma Cells

  12. 方法:以速率法在全自动生化分析仪上测定乳酸脱氢酶(LDH)活力;以鸟氨酸的生成判断精氨酸酶(arginase)的活力;

    The activities of lactate dehydrogenase ( LDH ), acid phosphatase ( ACP ) and arginase ( Arg ) were detected by automatic biochemistry analyzer .

  13. 本报告提供根据瓜氨酸砷酸解产物的鸟氨酸及氨的生成量作为测定鸟氨酸氨基甲酰移换酶(OCT)活力的两种方法。

    Two methods for the determination of ornithine carbamyl transferase ( OCT ) activity , by estimating the products of arsenolysis of citrulline , ornithine and ammonia respectively , are described .

  14. 本文数据提示arg-13在线粒体鸟氨酸过膜转运过程中起主要作用。

    All available data suggest arg-13 plays a major role in mitochondrial ornithine transport .

  15. 精氨酸脱羧酶(ADC)和鸟氨酸脱羧酶(ODC)在果实采后初期活性较高,果实明显衰老时活性迅速降低。

    Arginine decarboxylase ( ADC ) and ornithine decarboxylase ( ODC ) had high activities at the early post harvest stage , but decreased rapidly when fruits showed obvious senescence .

  16. 用核酸分子杂交技术研究多胺生物合成限速酶L-鸟氨酸脱羧酶(ODC)的不可逆抑制剂&二氟甲基鸟氨酸(DFMO)对HL-60细胞c-myc、c-fos、c-Ha-ras癌基因及ODC基因表达的影响。

    The effects of α - difluoromethylornithine ( DFMO ) on the expression of c-myc , c-fos , c-Ha-ras oncogenes and ODC gene of HL-60 cells were investigated .

  17. 测定的血清酶有鸟氨酸氨基甲酰转移酶(OCT),谷草转移氨酶(GoT)和、r-谷氨酰转肽酶(r-GT)。

    The determined serum enzymes were ornithine carbamyl trasferase ( OCT ), glutamic oxalacetic transaminase ( GOT ) and γ - glutamyl transpeptidase (γ - GT ) . The activities of the serum enzymes OCT , GOT and γ - GT increased appreciably .

  18. 目的克隆多胺生物合成抑制剂二氟甲基鸟氨酸(DFMO)诱导HL60细胞凋亡的相关基因,分析该基因表达及诱导凋亡的活性。

    Objective To clone the gene associated with apoptosis induced by an inhibitor of polyamine biosynthesis , α difluoromethylornithine ( DFMO ) .

  19. 【方法】已克隆S-腺苷蛋氨酸脱羧酶、鸟氨酸氨基转移酶、甜菜碱脱氢酶3个基因和内参基因的基础上,应用定量PCR技术,对这3个基因在不同胁迫时间下的表达水平进行分析。

    [ METHOD ] In this paper , three gene S-adenosylmethionine decarboxylase ( SAMDC ), ornithine aminotransferase ( OAT ) and betaine aldehyde dehydrogenase ( BADH ) plus one house-keeping gene had been cloned and their expression levels under different stresses were evaluated by real-time PCR technique .

  20. 鸟氨酸脱羧酶(ODC)是多胺合成的关键酶,ODC活性的改变可作为反映脑胶质瘤恶性程度的可靠的生物学标志;

    Ornithine decarboxylase ( ODC ) is the first metabolic key enzyme of polyamine metabolism , and the activity of ODC represent biochemical markers of malignancy in glioma .

  21. 鸟氨酸脱羧酶(Ornithinedecarboxylase,ODC)是多胺生物合成的限速酶,通过调节多胺含量影响细胞增殖分化,其活性增高与肿瘤的发生、发展密切相关。

    The ornithine decarboxylase ( ODC ) is rate-limiting enzyme of polyamine biosynthesis , it 's activity increasing have close correlation with occurrence and development of tumour by regulating polyamine content .

  22. 目的测定1个迟发型鸟氨酸氨基甲酰转移酶(ornithinetranscarbamylase,OTC)缺乏症的中国汉族家系的基因突变及患者OTC基因外显子序列。

    Objective To determine the molecular basis of late onset ornithine transcarbamylase ( OTC ) deficiency in a Chinese family of Han nationality and the exon sequences of OTC gene of this patient .

  23. 本文利用Northern印迹分析技术研究了完全致癌物二甲基苯蒽(DMBA)对小鼠表皮鸟氨酸脱羧酶(ODC)mRNA和转化生长因子β(TGF-β)mRNA水平的影响。

    The effects of 7,12-dimethylbena [ a ] anthracene ( DMBA ) on the mRNA levels of ornithine decarboxylase ( ODC ) and transforming growth factor - β ( TGF - β) in mouse epidermis were studied by Northern blotting in this paper .

  24. 渗透胁迫可以提高烟叶精氨酸脱羧酶(ADC)和多胺氧化酶(PAO)活性,降低鸟氨酸脱羧酶(ODC)活性,且叶片PAO活性的提高与多胺含量积累几乎同步。

    Osmotic stress can heighten the activities of ADC and PAO and decrease the activities of ODC in flue-cured tobacco leaves , even the increase of the activities of PAO is almost in-phase with the accumulation of polyamine content .

  25. 目的通过测定小鼠二阶段皮肤乳头状瘤模型中鸟氨酸脱羧酶(ODC)、增殖细胞核抗原(PCNA)的变化,探讨芳维A酸乙酯的癌化学预防作用机制。

    Objective To study the mechanism of arotinoid ethylester on cancer chemoprevention by assaying ornithine decarboxylase ( ODC ) activity and proliferative cell nuclear antigen ( PCNA ) index of mouse skin in the process of mouse papilloma formation .

  26. 探讨二氟甲基鸟氨酸(DFMO)对人宫颈鳞癌细胞系HeLa细胞生长特性、凋亡和端粒酶活性的影响。

    To investigate the effects of difluoromethylornithine ( DFMO ), an inhibitor of polyamine biosynthesis , on the growing characteristics and apoptosis of HeLa cells . To explore its mechanisms of action on telomerase activity .

  27. 跟一起参加的其他孩子一样,杰西患有先天性鸟氨酸甲酰氨基转移酶(OTC)缺乏症,他的肝脏无法代谢足够的血氨。研究人员尝试通过注射感冒病毒来治疗。

    Like the other children in the study , he had been born with a condition called " OTC " that prevented his liver from eliminating enough ammonia , which the researchers tried to fight by injecting him with a cold virus .

  28. 目的构建人鸟氨酸脱羧酶抗酶(OAZ)突变基因,重组至原核表达载体中并表达出重组蛋白。

    Objective To clone human ornithine decarboxylase antizyme ( OAZ ) mutation gene and express its recombinant protein .

  29. Meyskens说,DFMO,α-二氟甲基鸟氨酸,是作为癌症治疗开发的,但现在用来治疗非洲昏睡病。

    Meyskens says that DFMO , which is short for difluoromethylornithine , was developed as a cancer medication , but is now used to treat African sleeping sickness .

  30. 在斑点试验条件下,arg-4,arg-13双突变株能利用鸟氨酸作为唯一氮源与精氨酸合成前体,但受赖氨酸与刀豆氨酸强烈抑制。

    Under spot test conditions , double mutant arg-4 , arg-13 is able to use ornithine as sole nitrogen source and arginine biosynthesis precursor , but subject to strong lysine and canavanine inhibition .