主动转运

结论：BDNF-PEG-29B4/SA可以通过主动转运进入血脑屏障，对AD转基因鼠有治疗作用。

Conclusion : BDNF targeting drug BDNF-PEG-29B4 / SA can enter the blood-brain barrier by active transport and has a therapeutic effect in AD transgenic mice .

强调了贝类对溶解态重金属的转运除了被动转运之外，还涉及到需要ATP供能的主动转运过程。

It is highlighted that besides passive transport , dissolved metal transport into bivalves was involved in active transport coupled with ATP .

本研究观察了不同热应激强度下大鼠心肌细胞内质网、线粒体中钙含量，Ca2＋－ATP酶活力，内质网Ca2＋主动转运速率及心肌ATP含量的变化。

The rate of Ca 2 + active transportation in SR and ATP content in myocardium were also observed .

除了载体介导的易化转运过程外，翡翠贻贝对溶解态Cd和Zn的吸收也与机体的能量代谢相关联，涉及到需要ATP供能的主动转运过程。

These experimental results suggested that Cd and Zn uptake was correlated with the energy metabolism , and may even be involved in an active transport , besides the facilitated transport .

结果表明丹参素与芍药苷在Caco-2细胞模型中存在P-gp蛋白介导的主动转运。

The transport of danshensu and paeoniflorin across Caco-2 cell monolayer model maybe was an active transportation mediated by P-glycoprotein transporter .

晶体的Na~+／K~+-ATPase活性，~3H-胆碱和~（86）Rb的主动转运均未受到影响。

Neither damage to lens membrane functions as measured by ~ 3H-choline and ~ ( 86 ) Rubidium uptake or loss of Na ~ + / K ~ + - ATPase activity was detected .

FcRn可特异性的结合IgGFc片段，介导黏膜上皮细胞主动转运IgG，使机体获得抵御病原体的能力。

The neonatal Fc receptor ( FcRn ) can mediate mucosal polarized epithelial cells to transport IgG initiatively by binding specific IgG Fc fragments , thus allowing body to obtain the ability to resist pathogens .

结果和结论：制备得到的囊泡均匀圆整，粒径0.55±0.11μm，5-FU在纹状缘囊泡的摄取过程包含主动转运与至少一个顺浓度梯度的被动过程。

The uptake of 5-FU by BBMVs was determined by the fast filtration techniques . RESULTS AND CONCLUSION The vesicles were spherical particles with size of 0.55 ± 0.11 μ m. The uptake of 5-FU contained active transport and at least one concentration gradient-dependent passive process .

主动转运似乎只限于其结构类似于机体内源性物质的那些药物。

Active transport appears to be limited to drugs structurally similar to endogenous substances .

口服补液盐和主动转运

ORS and Initiative Transport

现已确认，多种离子、维生素类、糖类和氨基酸类都采取这种主动转运方式。

Active transport processes have been identified for various ions , vitamins , sugars , and amino acids .

主动转运这种转运过程的特征是选择性和饱和性，需要细胞的能量消耗。

Active transport : This process is characterized by selectivity and saturability and requires energy expenditure by the cell .

主动转运或胞饮作用等方式穿越生物屏障。

Drugs may cross a biologic barrier by passive diffusion , facilitated passive diffusion , active transport , or pinocytosis .

肺泡上皮钠水主动转运机制与丝裂原活化蛋白激酶信号转导途径密切相关。

The mechanisms of aquaporin and sodium active transport in alveolar cells relate closely with mitogen-activated protein kinase signal transduction pathway .

一组为被动转运化合物，如阿司匹林，另一组为主动转运化合物，如头孢菌素Ⅵ，此组化合物一般在小肠内通过专门载体主动转运进入循环。

One group was passive transported compounds , such as aspirin . Another group was active transported compounds , such as cephalexin .

结论采用体位疗法、加强呼吸管理、注意监测血糖、提倡主动转运及宫内转运等方法联合应用能有效地提高有并发症早产儿的治愈率。

Conclusion : Position therapy , respiratory management , attention to glycemia and active conveyance are important methods to improve the conditions of preterm infants .

用偶氮胂Ⅲ指示剂检测心肌肌质网Ca~（2+）主动转运

Measurement of ATP-dependent Ca ~ ( 2 + ) transport by cardiac sarcoplasmic reticulum with arsenazo ⅲ as a Ca ~ ( 2 + ) indicator

栀子苷在大鼠小肠的吸收速率随浓度的增加而减小，提示药物的吸收机制除了被动扩散外，可能有主动转运和易化扩散因素；

Their absorption was first-order process besides the passive diffusion mechanism , and facilitated diffusion and active transport may also take part in the transport process .

研究表明牙本质矿化过程中钙离子转运是一种逆浓度梯度的跨细胞主动转运过程；

Recent evidence suggests that a major portion of the Ca2 + ions needed in the dentin mineralization are transported by a active transcellular route against concertration gradient .

原因可能是在鱼体内，药物主要通过肾脏血管和腮被动扩散消除，而哺乳动物则主要通过肾脏的主动转运消除。

The reason may be that in fishes , drugs are eliminated mainly through the passive diffusion by renal blood vessels and gills while in mammals , through active transport by kidney .

既往的研究表明，有临床意义的糖尿病黄斑水肿除了有视网膜血管渗漏的因素外，还要有血视网膜屏障的主动转运机制的破坏才会发生[5]。

Previous study has found that clinically significant diabetic macular edema develops only when ( in addition to vascular leakage ) the active transport mechanisms of the blood-retinal barrier are impaired [ 5 ] .

其吸收速率随着浓度的增加而逐渐减小，药物在小肠中的吸收不呈现一级动力学过程，吸收机制除了被动扩散以外，可能还有易化扩散和主动转运；

With the decrease of sanchinoside R_ ( 1 ) and ginsenoside Rg_1 concentration , the absorption rate is increased , their absorption was is first-order process , besides the passive diffusion mechanism , facilitated diffusion and active transport may also take part in the transport process .

酶系统除了有屏障功能外，酶系统还在跨毛细血管膜的主动转运中具有重要作用，对氨基酸和蛋白质等大分子物质的转运起调节作用。

We suggested that the enzyme barrier might be related with the formation of VBE . Enzyme system plays an adjustment role in the active transport of substance in the course of striding over blood capillary membran such as amino acid and protein besides the barrier function .

从得到的差异表达的蛋白点可知本研究所涉及的耐药机制包括灭活酶或钝化酶的产生，目标靶蛋白的修饰，主动药物转运系统的变化以及细胞外膜的通透性的改变等几种。

From differentially expressed protein spots , antibiotic-resistant mechanism of V. alginolyticus of which in activator or inactive enzyme were produced , target proteins were modified , efflux pump systems and permeability of outer membrane were changed could be known .

多巴胺通过主动传输过程转运回细胞内后，水平下降。

Dopamine levels wane as dopamine is taken back into cells by an active transport system .