叶酸

Simultaneously we prepared benzimidazolines with two methods by the of reduction benzimidazolium salts with NaBH_4 and Grignard addition with benzimidazolium salts. Thus we provided a new biomimic synthetic method for 13 kind of tetrahydroisoquinoline starting from carboxylic aicd and halid, gave a new idea of the synthesis for new drugs.It can make many kind ofβ-carboline alkaloids which have bioactivity to antibacterium, antivirus and antitumor to start from 1,2,3,4-tetrahydro -β-carboline.

本文以1，3-二甲基苯并咪唑碘盐和2-取代的1，3-二甲基苯并咪唑碘盐为原料，采用了NaBH_4还原和Grignard试剂加成两种方法，制备了13种1，3-二甲基苯并咪唑烷和2-取代的1，3-二甲基苯并咪唑烷作为四氢叶酸辅酶一碳单元转移新模型，在酸性条件下，以2-(3，4-二甲氧基苯基)乙胺作为接收一碳转移的亲核试剂，完成了13种重要的四氢异喹啉类化合物的新合成方法研究。

Protein, soy fiber, xanthan gum, apple pectin, citrus pectin, blond psyliium seed powder, Algae, vitamins and minerals, vegetable powders broccoli, barley grass, wheat grass, spinach, beet green, cactus, collard, Jerusalem artichoke, golden seal, Echinacea angustifolia leaf, green pepper, wild yam, kale, rose hips, Lingzhi mushroom (Ganoderma lucidum, extracts of green tea and cola nut, American Sacred Bark, apple, prune and carrot juice, licorice.

蛋白质、大豆纤维、黄原胶、苹果胶、柑桔果胶、blond psyliium seed powder、绿藻、维生素A、B1、B2、B3、B5、B6、B12、C、D、E、叶酸、生物素，矿物质钙、镁、磷、铬、铜、碘、铁、锰、钼、硒、锌、氯、钾、矽，蔬菜粉(西芥兰、大麦草、小麦草、菠菜、甜菜)、仙人掌、芥兰、朝鲜蓟、金印草、紫锥菊、青椒、山药、羽衣甘蓝、玫瑰果、灵芝、绿茶、可乐果、American sacred bark、苹果、梅、胡萝卜汁、甘草。

Spinach, asparagus, lentils and garbanzo beans are some of the best folate sources.

菠菜，芦笋，小扁豆和豆类garbanzo一些叶酸的最佳来源。

Folic acid was associated with higher risks of haing 3 or more adenomas and of noncolorectal cancers.

服用叶酸与具有3处以上的腺瘤或无结直肠癌的高风险性相关。

There were 15 pediatric ALL patients, which had received 50 times of chemotherapy with HD-MTX. The records about blood concentration of MTX and clinical conditions for 50 times chemotherapy were divided into two groups. Group I: contained 25 records of stand-risk patients, administering MTX 3.0g/m2; Group II: contained 25 records of mid and high-risk patients, administering 5.0g/m2. Continuous intravenous dripped MTX for 24th in both two groups, while implemented hydrating and alkalizing for 4 days. All patients were rescued 6 times through leucovorin, 15mg/m~2, since 12th after the end of MTX dripping. Then examined the blood concentration of MTX by fluorescence polarization immunoassay approach at 24h, 44h, 68h, at the same time inspected liver function, blood routine examination, the occurrence time and degree of toxicological reactions.

观察15例ALL住院患儿，接受大剂量MTX共50例次，按ALL危险度分2组，低危治疗组接受MTX剂量为3.0g/m2为I组；中高危治疗组接受MTX剂量为5.0g/m2为II组，连续静脉点滴MTX共24小时，同时给予水化碱化治疗，共4天，全部病例均在MTX滴注结束后12小时开始静脉推注四氢叶酸钙(leucovorin，LV)解救，15mg/m2/次，共6次，采用免疫偏振荧光法检测药物滴注24、44、68小时MTX血药浓度，同时检测两组病例的肝功、血常规，观察临床出现MTX毒副反应的时间及程度，观察每个病例毒副反应出现程度与MTX血药浓度关系，两组毒副反应程度比较，进行统计学分析。

In addition, avocados provide a good amount of dietary fiber, potassium, and folate.

在此外， avocados提供了一个良好的金额膳食纤维，钾，和叶酸。

Supplementation of folate in diets may reduce hyperhomocysteinemia induced by excess intake of methionine and decrease the expression of NF-κBP65 protein and monocyte chemoattractant protein-1 (MCP-1) in carotid common artery after balloon angioplasty, These data show that Hcy may exacerbate neointima hyperplasia after denuding injury by increasing the expression of inflammatory factors via the activation of NF-kB, Folate can reverse the effect of Hcy on the activation of NF-κB and the expression of MCP-1, an effect of preventing the restenosis postangioplasty.

而Hcy有可能通过激活核转录因子通路增加损伤血管组织炎症因子的表达而加重血管球能损伤后新内膜的过度增生过程，叶酸能对抗Hcy的上述作用，对高同型半胱氨酸血症引起的血管成形术后再狭窄可能有一定的预防作用。

Disentangling the effects of folate from other micronutrients can be difficult, but the authors think they have succeeded in doing this by looking at several different nutrients in statistical analyses.

disentangling的影响叶酸从其他微量营养素可能有困难，但作者认为，他们已成功地在这样做的看几个不同的养分，在统计分析。

F-BSANP entrapping drugs can significantly enhance the drugs to tumor sites and improve their efficacy.

用叶酸偶联白蛋白纳米粒包裹药物能显著增强药物对肿瘤部位的靶向性，明显提高药效。

The interaction of human serum albumin and folic acid was studied using fluorescence spectroscopy, UV absorption and synchronous fluorescence spectroscopy in the pH 7.4 Tris-HCl buffer system at different temperatures.

在不同温度下的pH 7.4的Tris-HCl缓冲溶液体系中，采用荧光光谱、紫外吸收光谱和同步荧光光谱研究了人血清蛋白与叶酸的相互作用。

Fancy gold-plated dangling earrings with facetted White Opal crystals.

花式镀金悬垂耳环与facetted白欧泊水晶。

This essay chooses the study aim from biology teachers in middle school in Shi Jiazhuang which tells us that most of the middle school biology teachers in Shi Jiazhuang have the"burnout", lower successfulness, individualize.

本文选取石家庄市初中生物教师作为研究对象，运用问卷调查的方法对石家庄市初中生物教师职业倦怠的现状进行调查，调查结果发现，石家庄市初中生物教师这一群体普遍存在职业倦怠，情感枯竭程度偏高，成就感偏低，去个性化程度最为严重。