四环素

A method for the determination of tetracyclines residues in animal food by RP-HPLC..

采用高效液相色谱法进行四环素类抗生素药物残留量的测定。

The antibiotic resistance of staphylococcus aureus was detected by K-B method. Of 33 staphylococcus aureus stains isolated from food, 28 were resistant to penicillium and ampicillin, the resistance rate was as high as 84.8%.21 stains were resistant to carbenicillin, the rate was 63.6%.5 stains were detected resistant to methicillin, which took up to 15.2%. The stains also were resistant to cephalosporin antibiotics, aminoglycoside, microcline antibiotic and tetracyclines in different levels, all strains were sensitive to vancomycin.

结果 33株食品中分离的金黄色葡萄球菌，有28株对青霉素和氨苄西林耐药，耐药率高达84.8%；21株对卡比西林耐药，耐药率达63.6%；检出了5株耐甲氧西林的菌株，耐药率为15.2%；对其他头孢类抗生素、氨基糖苷类、大环内脂类、四环素类等都出现出不同程度的耐药；所有菌株均对万古霉素敏感。

Etiology is not clear at present, is generally believed that may be related to the following factors: the first 3 months of pregnancy the mother suffered from disease on primality infection; early pregnancy to accept a large quantity of radioactive radiation; severe malnutrition; taking certain drugs during pregnancy, such as tetracycline, sedatives, quinine, etc., can lead to the occurrence of congenital heart disease in children.

目前病因尚不清楚，一般认为可能与下列因素有关：母亲妊娠最初3个月患有病素性感染；妊娠初期接受大量放射性照射；严重营养不良；妊娠期服用某些药物，如四环素、镇静药、奎宁等，可导致小儿发生先天性心脏病。

Methods Mouse models of tibia fracture healing were established, and callus samples were collected 1, 3, 7, 14, 21 and 28 days after fracture. The development of callus and new bone formation were evaluated with roentgenology, Micro-CT and tetracycline double labeling method, and the expression of HIF-1α, vascular endothelial growth factor, Runx2 and ALP in callus were detected with RT-PCR, Western blotting and immunohistochemistry. The relationship between HIF-1α and fracture healing was analysed.

建立小鼠胫骨骨折模型，骨折后1、3、7、14、21、28 d取材，应用X线摄片、Micro-CT和四环素荧光双标记技术，观测骨痂组织的演变和新骨形成状况；采用RT-PCR、Western blotting和免疫组织化学方法，检测骨痂组织细胞HIF-1α、血管内皮生长因子和成骨性标志物（Runx2和ALP）的表达状况，分析HIF-1α与骨折愈合进程的关系。

Fuyang City, medical and health experts to remind the public not to panic, scrub typhus and other infectious diseases in general can be the same as anti-controllable, governance, tetracycline, chloramphenicol treatment effects .

阜阳市医疗卫生专家提醒公众不必恐慌，恙虫病和其他一般传染病一样可防、可控、可治，经四环素、氯霉素治疗有特效。

Terramycin,tetracycline and stilboestrol residues existed in raw meat in Harbin.The government should adopt corresponding measures to decrease the level of veterinary drug residues.

在哈尔滨市售的动物性食品中存在土霉素、四环素和己烯雌酚残留，应采取相应措施，降低兽药残留，确保人体健康。

Results showed that 40.78%(42/103) strains were resistant to erythromycin, 24. 27%(25/103) and 28. 16%(29/103) strains were resistant to tetracycline and streptomycin separately.

结果发现，40.78％（42／103）的细菌对红霉素具有抗性，而24.27％（25／103）及28.16％（29／103）的细菌分别对四环素和链霉素具有抗性。

Originally inferior test result indicates result , the staphylococcus poisons rates to different oxazole of sulfanilamide being able to bear being 100%, the penicillin poisons rates with the illotycin being able to bear approaching 100% equally , the streptococcus poisons rates most highly , is 61.11% to the penicillin being able to bear, being able to bear to streptomycin , illotycin , Achromycin etc.

结果 本次试验结果表明，葡萄球菌对磺胺异恶唑的耐药率为100%，青霉素和红霉素的耐药率均接近100%，链球菌对青霉素的耐药率最高，为61.11%，对链霉素、红霉素、四环素等的耐药率均超过50%，成为临床治疗的潜在危险，提示安全应用治疗药物的重要性。

In endemic disease preventive medication over the period at risk using 500 to 800g of tetracycline or trimethoprim/sulpha 400g/tonne in-feed may be used but it would be advisable to identify the major bacteria involved and determine their antibiotic sensitivities.

在高风险期需针对地方性疾病采取预防性用药措施，可在每吨饲料中添加500至800克四环素或400克甲氧苄胺嘧啶/磺胺。但建议用药前分离确定主要的病源并进行药敏试验。

The broad spectrum antibiotics, tetracyclines, trimethoprim/sulpha, or synthetic penicillins are the medicines of choice but if Mycoplasma alone is involved tiamulin or lincomycin may be used.

应选择广谱抗生素、四环素、甲氧苄氨嘧啶/磺胺，或合成青霉素。不过当只有气喘病伴发时，可用泰妙菌素或林可霉素。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。