儿茶

The article in recent years the research progress of disease of oral cavity of TP prevention and cure makes one overview. The compositive TP of the basic research 1.1 TP of 1 TP is the floorboard that phenolic apperception of a kind of many hydroxyl closes matter, 25% what hold tea dry weight about, its are main component includes to express gallnut of gallnut catechu element gallnut of element of catechu of gallnut of acerbity ester, watch, watch catechu element is acerbity element of catechu of ester, watch, express gallnut of gallnut catechu element among them acerbity ester content is highest, occupy the 80%[1] of catechu element about, fighting oxidation with its unique element structure, fight the position with fight the respect such as tumor to have choppy, significant. The 1.2 TP absorption in oral cavity and metabolization Lee [2] is measured normally inside a hour after healthy person is chewing green tea Xie Huo contains juice of gargle green tea, content of the TP in saliva is very high, after observing green tea passes salivary enzymatic hydrolyze, TP is slow release and in oral cavity;Yang of local play action [the salivary level after 3] checked 6 volunteers to drink tea, chroma of the TP in making clear the saliva after drinking tea as a result is serous TP pH indicator 2 times, and the salivary TP concentration that contains gargle tea solution a few minutes to be able to produce higher level, and TP can be absorbed through oral cavity mucous membrane.

本文就近年来TP防治口腔疾病的探究进展作一综述。1 TP的基础探究1.1 TP的组成TP是一类多羟基酚类化合物的总称，约占茶叶干重的25%，其主要成份包括表没食子儿茶素没食子酸酯、表没食子儿茶素、表儿茶素没食子酸酯、表儿茶素等，其中表没食子儿茶素没食子酸酯含量最高，约占儿茶素的80%[1]，并以其独特的分子结构在抗氧化、抗突变、抗肿瘤等方面占有重要的地位。1.2 TP在口腔中的吸收和代谢Lee等[2]测得正常健康人在咀嚼绿茶叶或含漱绿茶液后的一个小时内，唾液中TP含量很高，并观察到绿茶通过唾液酶水解后，TP缓慢释放并在口腔局部发挥功能；Yang等[3]检查了6位志愿者饮茶后的唾液水平，结果表明饮茶后唾液中TP浓度是血浆TP浓度的2倍，而含漱茶溶液几分钟即可产生更高水平的唾液TP浓度，且TP可通过口腔黏膜吸收。

Upon initial signal assignment, about 20 chemical constituents in tea were identified, including amino acids, theanine, catechins (EGC, EC, EGCG, ECG and unknown catechins), sucrose, unknown sugars, fatty acids, caffeine, quinic acid and so on. The NMR data were then analyzed by the principal component analysis technique.

检测出约20种物质，包括多种氨基酸、茶氨酸、多种儿茶素表没食子儿茶素(EGC、表儿茶素、表没食子儿茶素没食子酸酯、表儿茶素没食子酸酯和一些未知的儿茶素、蔗糖、未知糖类、脂肪酸、咖啡因等。

The decrease of protocatechuric acid content was significant at the concentration level of 6μL/L MeJA, but 6μL/L MeSA and feeding damage for 48h by the third instar larvae of maize stalk borer had an opposite effect.

原儿茶酸的含量随着MeJA处理浓度的增大逐渐减少，6μL/L的MeJA使其显著降低，而6μL/L 的MeSA和玉米螟3龄幼虫处理48h则使其含量升高。

Chen (1995) Differential effects of chloral hydrate and pentobarbital sodium on a cocaine level and its catecholamine response in the medial prefrontal cortex: a comparison with conscious rats, J.

标题中译：以三氯乙醛及巴比妥钠盐麻醉下之大白鼠其内前额皮质区之古柯碱浓度及其引起儿茶酚胺浓度上升之关系：和清醒大白鼠相比较。

Substitute green tea for coffee and soda: it contains catechins known to inhibit cancer growth.

用绿茶代替咖啡和汽水，绿茶内的儿茶酚可以抑制癌细胞的生长

Catechin, thearubigins, and theaflavins of Tibetan tea, and products of their oxidation, degradation and complexity, contain important elements to prevent cancer, and reduce cancer and mutation so as to maintain a strong ability to kill cancer cells. The tea is also noted to prevent forms of carcinogenic nitroso compound, and restrain some enzyme that could activate carcinogen. Tibetan tea is rich in many materials, such ascatechin,β-carotene, vitamin

防癌、抗癌藏茶中茶红素、茶黄素、儿茶素以及其氧化、降解、络合产物都是重要的防癌、抗癌、抗突变的成分，有很强的杀灭癌细胞的作用；对人体致癌性亚硝基化合物的形成具有阻断功效，能抑制某些能活化致癌原的酶系；藏茶富含的多种物质，如儿茶素、β—胡萝卜素、维生素B1、B2、C、E等都有抗癌的作用。

Changes of contents of phenolic compounds (catechin, quercetin, chlorogenic acid, ferulic acid) and indoleacetic acid, and changes of activities of polyphenoloxidase and peroxydase during the cuttings rooting were determined.

蛇足石杉分别扦插于原生境土壤和灭菌土壤上，调查其生根率，测定生根过程中吲哚乙酸、酚类化合物(儿茶酚、槲皮素、绿原酸、阿魏酸)、多酚氧化酶和过氧化物酶活性的变化。

Alpha-2 agonists induced hypoxemia is an effect that is specific for ungulates and has neer documented in humans.

此外，Bissonnette[6]建议认为，胎儿和新生儿出现急性缺氧时的呼吸反应可被蓝斑核内的作用于α-2受体的儿茶酚胺所减弱。

The inhibitory effect against platelet aggregation induced by ADP of 4 watersoluble components was studied in vitro.

丹参4种水溶性单体对血小板功能的影响研究结果表明，丹参酚酸B、迷迭香酸、丹参素、原儿茶醛均具有体外抗ADP诱导的兔血小板聚集活性。

Senior author Duska Dragun, MD, from the Department of Nephrology and Intensive Care Medicine, Charite University Hospital–Campus Virchow Clinic, Berlin, Germany, and colleagues in Berlin and in Melbourne, Australia, investigated whether the COMT variant with lower activity predisposes patients to acute kidney injury and prolonged vasodilatory shock after bypass surgery because of the increase in plasma catecholamines.

资深作者、来自德国柏林Charite大学医院校园Virchow诊所肾脏科的Duska Dragun医师与澳洲墨尔本及柏林的同事们研究COMT基因变异是否会降低病患接受绕道手术后，因为血中儿茶酚胺浓度上升，发生急性肾脏损伤与血管扩张性休克的机率。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷