生物屏障

正如哈蒙德教授认为的那样，科学家可以从化学工程领域借鉴纳米技术创意，以突破生物屏障。

As Professor Hammond observed , scientists could borrow nanotechnology ideas from chemical engineering to breach biological barriers .

试验四：乳酸杆菌对肠道病原菌粘附性能的影响乳酸杆菌是肠道正常优势菌群，与肠黏膜紧密结合构成肠道的生物屏障，阻止细菌、病毒和食物抗原的入侵。

Lactobacillus , a normal intestinal flora , closely integrated with the intestinal mucosa , constitute the biological barriers preventing the invasion of bacteria , viruses , and food antigens .

上述实验结果提示：ANP时肠道菌群严重失调，生物屏障损伤在ANP继发性胰腺感染中可能有重要作用。

The results indicated that microecological disturbance could take place after the onset of ANP , which may take an important role on pancreatic infection complicating ANP .

背景和目的：肠粘膜屏障主要由机械屏障、免疫屏障和生物屏障屏障构成，其中以机械屏障最为重要，它包括肠上皮细胞和细胞间的紧密连接（tightjunction，TJ）。

Objective : The intestinal mucosal barrier ( IMB ) is primarily composed of mechanical , biological and immunologic barriers , and the mechanical barrier is the most important component , which including the intestinal epithelial cells and the intercellular tight junction .

严重烧伤后大鼠肠道生物屏障损害的初步研究

A preliminary study of the postburn intestinal biological barrier injury in severely burned rats

目的观察严重烧伤大鼠肠道生物屏障的动态变化。

Objective To investigate the postburn change in the intestinal biological barrier in severely burned rats .

血管内皮细胞不仅是生物体内重要的生物屏障，而且还具有内分泌功能。

Vascular endothelial cells are not only an important biological barrier , but also have endocrine function .

目的：探索肠道生物屏障改变在胰腺感染中的作用。

Objective : To investigate the potential role of intestinal microflora barrier in the pathogenesis of pancreatic infection .

双歧杆菌对烫伤大鼠肠道黏膜机械及生物屏障的改善作用

Improvement of bifidobacterial supplement on the barrier function of intestinal mucosa and microbe flora induced by thermal injury in rats

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 .

目的：探讨严重烫伤后补充外源性双歧杆菌对肠黏膜机械及生物屏障的保护作用及其对肠道细菌或内毒素移位的影响。

Objective : To investigate the potential effect of bifidobacterial supplement on intestinal mucosal and biological barrier following severe burns .

通过研究取得了以下的结论：1.果树对土壤水分的蒸散起到了显著的生物屏障效应。

Following is the results : 1 . Fruit tress play a significant biological barrier effect on the evaporation of soil moist-ture .

对小鼠肠道损伤的作用机制主要是从机械屏障、化学屏障、生物屏障和免疫屏障四个方面造成肠道损伤。

Can effect on mouse intestine barrier was mainly from the four parts including machine , chemistry , biology and immunologic barrier .

小型化，尺寸更小的纳米粒子可以发挥一些特殊作用，如越过生物屏障等。

And ( 4 ) polymer nanoparticles of smaller size can play a special role , such as in getting across biological barrier , etc.

双歧杆菌作为肠黏膜的主要生物屏障，能够通过免疫排斥、免疫清除和免疫调节加强胃肠防御的各个防线，发挥抗感染、抗炎症和抗肿瘤的作用。

As the main biological barrier of intestinal mucosa , bifidobacteria can enhance gastrointestinal defense , anti-infection and anti-tumor through immunological rejection , immune clearance and immunological regulation .

人们对于纳米颗粒进入人体之后如何发生反应、它们可能穿过什么生物屏障以及它们可能对人类和环境产生什么有毒伤害知之甚少。

Very little is known about how nanoparticles will react when introduced to the body , what biological barriers they may pass through , and what toxic harm to humans and the environment they may cause .

皮肤由表皮和真皮两部分组成，是人体的重要器官；可阻止微生物入侵，维持机体内环境稳定的屏障，具有重要的化学、物理和生物屏障功能。

Skin is consists of two parts , epidermis and dermal , is a vital organ of the human body ; Can prevent microbial invasion , maintain stable barrier in the environment , and has important chemical , physical and biological barrier function .

除了要与骨组织牢固结合外，还必须在种植体软组织界面建立能够防止细菌及其它致炎因子侵入的生物屏障。

For the oral implant to survive in this dual enviroment , a viable biological seal that prevents the ingress of bacteria and other inflamation-producing agents must exist at the soft tissue-implant interface as well as a strong osseointegration at bone & implant interface .

肠黏膜屏障包括完整的肠上皮细胞及其细胞间连接所构成的机械屏障、肠道正常微生物群所构成的生物屏障和肠道相关淋巴样组织及其分泌抗体所构成的免疫屏障。

Intestinal mucosal barrier , including a complete intestinal epithelial cells and cells form the mechanical connection between the barrier posed by the normal intestinal microbial flora of the biological barrier and intestinal-associated lymphoid tissue and the secretion of antibodies by the immune barrier posed .

简要综述了几种能够携带药物跨越血脑屏障和细胞生物膜屏障的蛋白结构域的研究进展。

This article summarized several protein domains that can delivery drugs by passing blood-brain barrier and cell membrane barrier .

一个原因是，尽管人类帮助物种跨越天然的生物地理屏障已有千年之久，但如今事态发展的速度比过去快得太多。

For one thing , though humans have helped species move beyond natural biogeographical boundaries for millennia , today this is happening with far greater speed .

美国科罗拉多国家大气研究中心的科学家说，这种化学物可以提升植物的生物化学屏障。

The chemicals are produced as a gas to boost the plant 's biochemical defences , say scientists from the National Center for Atmospheric Research in Colorado .

领导此项研究的托马思。卡尔说，这种化学物质引发植物蛋白质的形成，从而提升其生物化学屏障，同时还能降低伤害。

Thomas Karl , who led the study , said the chemical triggers " the formation of proteins that boost their biochemical defences and reduce injury " .

结论硅纳米颗粒可跨越血前列腺屏障和细胞生物膜屏障，可能成为前列腺疾病治疗一种很有应用前景的给药载体。

Conclusions Silicon nanoparticles can overcome the obstruction of drug transportation by blood-prostate barrier or other biomembranes and thus may be promising as a drug carrier in treatment of prostate diseases .

生物可吸收屏障膜的降解性能

Degradation Performance of Biological Barrier Membrane

既是物质代谢中心，又是重要的分泌、排泄、生物转化和屏障器官，还是多种凝血因子合成的场所。

Metabolism is the Centre as well as a major secretion , excretion , biotransformation and barriers organ , or a variety of synthetic clotting factor places .