离子液体促进氟罗沙星的合成

2,3,4-三氟苯胺经与EMME缩合、环合、氟乙基化、与N-甲基哌嗪缩合和水解反应制得氟罗沙星,前4步反应可被离子溶剂1-丁基-3-甲基咪唑六氟磷酸盐促进,如环合反应温度由300℃降至200℃,总收率61%.     

Synergistic antinociceptive interaction between acetaminophen or metamizol and B vitamins in the formalin test

There is evidence that B vitamins produce antinociception in animals. However, potentiation of NSAID‐induced antinociception by B vitamins is unclear. The current study was designed to investigate the antinociceptive interaction between a mixture of B vitamins and either acetaminophen or metamizol. Acetaminophen (56–316 mg/kg), metamizol (32–178 mg/kg), and the mixture of B vitamins (32–178 mg/kg of thiamine, pyridoxine, and cyanocobalamin in a 100:100:1 proportion, respectively) or a combination of each drug with the B vitamins mixture was administered orally to female Wistar rats, and the antinociceptive effect determined in the formalin test. Isobolographic analyses were used to define the nature of the interaction between NSAIDs and B vitamins. Oral administration of either drug produced a dose‐related antinociceptive effect. Isobolographic analyses revealed that both acetaminophen or metamizol and the B vitamins mixture interacted synergistically in the formalin test, suggesting that these two combinations could be useful in treating inflammatory pain states. Drug Dev. Res. 66:286–294, 2006. © 2006 Wiley‐Liss, Inc.     

重组人胰高血糖素类多肽-1(7-36)对化学致糖尿病模型动物的降血糖作用

目的　本文研究了重组人胰高血糖素类多肽 1(7 36 )[rhGLP 1(7 36 ) ]对化学所致糖尿病模型动物的降血糖和促胰岛素分泌作用。方法　对四氧嘧啶型糖尿病小鼠及链脲霉素型糖尿病大鼠皮下注射不同剂量的rhGLP 1,分别于给药 4天后采血 ,收取血清 ,测定血糖及胰岛素值。结果　四氧嘧啶型糖尿病小鼠皮下注射 4 0、80 μg·kg-1rhGLP 1后 ,血糖值显著下降 (P <0 0 1) ,而 2 0 μg·kg-1剂量组则无显著性改变 ;链脲霉素型糖尿病大鼠皮下注射 2 8、5 6 μg·kg-1rhGLP 1后 ,血糖值显著下降 (P <0 0 5、P <0 0 1) ,而 14 μg·kg-1剂量组则无显著性改变。结论　rhGLP 1对实验动物部分 β细胞破坏的胰岛仍有促分泌胰岛素及降糖作用     

提高化疗强度对伴IKZF1基因缺失儿童急性淋巴细胞白血病预后的影响

目的 总结伴IKZF1基因缺失儿童急性淋巴细胞白血病（ALL）的临床特征并观察提高化疗强度对其预后的影响。方法 2015年12月至2018年2月间确诊并按照中国儿童白血病协作组-ALL 2008（CCLG-ALL 2008）方案规范治疗的ALL患儿共278例,根据有无IKZF1基因缺失将其分为IKZF1基因缺失组和IKZF1基因正常组,IKZF1基因缺失组均接受CCLG-ALL 2008高危（HR）方案治疗,IKZF1基因正常组则按临床危险度分型接受不同强度化疗,比较两组的临床特征及无事件生存（EFS）率。结果 278例患儿中共24例（8.6%）检出IKZF1基因外显子大片段缺失。IKZF1基因缺失组初诊时WBC ≥ 50×10⁹/L、BCR-ABL1融合基因阳性、诱导缓解治疗第15天微小残留病≥ 10%、微小残留病-HR、临床危险度-HR所占比例均高于IKZF1基因正常组（P < 0.05）。IKZF1基因缺失组3年EFS率（76%±10%）低于IKZF1基因正常组（84%±4%）,但差异无统计学意义（P=0.282）;其中,IKZF1基因缺失组-非HR（实际按CCLG-ALL 2008 HR方案化疗）的预计3年EFS率为82%±12%,低于IKZF1基因正常组-非HR（86%±5%）,但差异无统计学意义（P=0.436）。结论 伴IKZF1基因缺失的儿童ALL早期治疗反应更差,提高化疗强度可能改善其预后。     

Incremental Development of an Integrated Assessment Method for the Professional Curriculum

Objective. To incrementally create and embed biannual integrated knowledge and skills examinations into final examinations of the pharmacy practice courses offered in the first 3 years of the pharmacy curriculum that would account for 10% of each course’s final course grade.Design. An ad hoc integrated examination committee was formed and tasked with addressing 4 key questions. Integrated examination committees for the first, second, and third years of the curriculum were established and tasked with identifying the most pertinent skills and knowledge-based content from each required course in the curriculum, developing measurable objectives addressing the pertinent content, and creating or revising multiple-choice and performance-based questions derived from integrated examination objectives. An Integrated Examination Review Committee evaluated all test questions, objectives, and student performance on each question, and revised the objectives and questions as needed for the following year’s iteration. Eight performance objectives for the examinations were measured.Assessment. All 8 performance objectives were achieved. Sixty-four percent of the college’s faculty members participated in the integrated examination process, improving the quality of the examination. The incremental development and implementation of the examinations over a 3-year period minimized the burden on faculty time while engaging them in the process. Student understanding of expectations for knowledge and skill retention in the curriculum also improved.Conclusions. Development of biannual integrated examinations in the first 3 years of the classroom curriculum enhanced the college’s culture of assessment and addressed accreditation guidelines for formative and summative assessment of students’ knowledge and skills. The course will continue to be refined each year.     

A mixture of pesticides at environmental concentrations induces oxidative stress and cholinergic effects in the neotropical fish Rhamdia quelen

The insecticides imidacloprid (IMI), a neonicotinoid, and propoxur (PRO), an N-methylcarbamate compound, are pesticides widely used throughout the world. Although they are not used together to combat pests, both are often found in freshwater near agricultural areas. Thereby, the goal of this study was to evaluate the additive effects of IMI and PRO mixtures at environmental concentrations in relation to isolated compounds on Rhamdia quelen, a neotropical fish. The fish was exposed to IMI (0.11 µg/L), PRO (0.039 µg/L), or Mix (0.11 µg/L IMI plus 0.039 µg/L PRO) during 96 h. Glutathione S-transferase (GST), superoxide dismutase (SOD), catalase (CAT), acetylcholinesterase (AChE) activities were determined. To verify oxidative damage thiobarbituric acid reactive substances (TBARS), protein carbonyl (PC), reactive oxygen species contents (ROS), antioxidant capacity against peroxides (ACAP) were determined in gills, liver, brain and muscle. The results shows that a mixture of these pesticides at environmental concentrations inhibited acetylcholinesterase activity in the brain and induced oxidative damage in all analyzed tissues. These results reinforce the hypothesis that mixture of contaminants present in environment could induce additive or synergistic effects on fish species.