人生中的3个3

学会做三件事 人一辈子有“三天”，即昨天、今天、明天。 昨天与今天之间有扇后门，今天与明天之间有扇前门。     

老年涂阳肺结核2H3R3Z3S3/4H3R3全程督导化疗

目的:探讨老年涂阳肺结核抗结核药物的治疗效果.方法:老年组51例,用全程督导2H3R3Z3S3/4H3R3方案治疗,设青年组106例作对照观察.结果:老年组痰菌阴转率93.3%,青年组97.1%.随访2 a,复发率老年组11.1%,青年组0.9%,两组比较差异无显著性(P＞0.05).结论:老年涂阳肺结核2H3R3Z3S3/4H3R3全程督导化疗疗效满意.     

化疗方案2H3R3Z3E3/4H3R3在肺结核合并糖尿病治疗中的疗效研究

目的探讨化疗方案2H3R3Z3E3/4H3R3在肺结核合并糖尿病治疗中的疗效。方法将50例初治涂阳肺结核合并糖尿病患者作为观察组,另外选择50例本院同期收治的初治涂阳肺结核患者作为对照组,两组均给予2H3R3Z3E3/4H3R3化疗方案进行全程督导,规则治疗满疗程。结果①两组均出现空洞、咯血及合并感染等情况,对照组上述情况发生率均要明显高于观察组,且两组相比,差异具有统计学意义（P〈0.05,P〈0.01）;②对照组治疗2个月末、4个月末痰菌转阴率分别为64.00%、76.00%、84.00%及86.00%,均明显小于观察组（分别为82.00%、90.00%、96.00%及98.00%）（P〈0.05,P〈0.01）;但在治疗6个月末以及疗程结束时,两组痰菌转阴率差异无统计学意义（P〉0.05）;③对照组X线胸片吸收率为84.00%,明显低于观察组（98.00%）,两组相比,差异具有统计学意义（P〈0.05）;④观察组复发率为4.44%,明显小于对照组（20.00%）,两组相比,差异具有统计学意义（P〈0.01）。结论初治疗涂阳肺结核合并糖尿病采用2H3R3Z3E3/4H3R3化疗方案治疗初治涂阳肺结核的传染期出现延长,病灶吸收率较慢。     

2H_3R_3Z_3E_3/4H_3R_3方案治疗初始涂阳肺结核556例效果分析

目的观察分析2H3R3Z3E3/4H3R3方案治疗初始涂阳肺结核的效果,为肺结核病防治工作提供参考依据。方法回顾性分析556例初始涂阳肺结核病患者的资料,均采用"世界银行贷款+中国结核病控制项目"的2H3R3Z3E3/4H3R3方案治疗,观察不同年龄阶段(中青年组、中年组、老年组)治疗效果及安全性。结果所有患者均于本科完成疗程,治疗满6个月,转阴503例(90.5%);对比各年龄阶段的治疗效果,同个时间点的转阴率比较,老年组的转阴率均低于其他各组,差异有显著性(P<0.05);老年组不良反应发生率显著高于其他两组,差异均有显著性(P<0.05)。结论本科用2H3R3Z3E3/4H3R3方案治疗初治凃阳肺结核治愈率复合国家>85%的要求,老年患者的治疗效果及安全性低于非老年患者,因此对疑似肺结核的老年人应提倡早登记、早确诊、早治疗,用2H3R3Z3E3/4H3R3方案治疗期间应加强观察病情以便调整用药剂量或用药方案。     

长寿养生用好3个3分钟

睡醒养神3分钟 有高血压、心脏病的中老年人,睡醒后应先在床上闭目养神3分钟再起来。这是因为刚醒来时大脑处于迷茫状态,血液黏稠,脑部缺血缺氧,容易跌倒,非常危险。     

PTPMeg2抑制NIH3T3/STAT3CA细胞模型STAT3转录活性的研究

目的探讨磷酸酶PTPMeg2对NIH3T3/STAT3CA细胞模型的增殖及STAT3转录活性的影响。方法构建STAT3异常突变的细胞模型NIH3T3/STAT3CA,MTT法和裸鼠异体移植瘤实验分别用于观察PTPMeg2对NIH3T3/STAT3CA细胞体外和体内增殖的影响,免疫共沉淀实验用于PTPMeg2与STAT3CA相互作用的研究,双荧光素酶报告基因法用于转录活性的研究。结果 PTPMeg2对NIH3T3/STAT3CA细胞在体外和体内都具有增殖抑制作用,与对照组比较均具有明显的统计学意义。PTPMeg2对NIH3T3/STAT3CA细胞的转录活性具有抑制作用,而PTPMeg2的突变体(PTPMeg2C515S)和ShPTPMeg2则无效。结论 PTPMeg2对NIH3T3/STAT3CA细胞具有增殖抑制作用,其作用机制可能与抑制STAT3的转录活性有关。     

Smad3 WT、Smad3 EPSM、Smad3 3S-A 3种质粒稳转HepG2细胞株的建立与功能研究

目的建立Smad3 WT、Smad3 EPSM及Smad3 3S-A 3种质粒稳转HepG2细胞株,探究单纯转染3种质粒及选择性上调p Smad3C、p Smad3L对HepG2细胞功能的影响。方法采用脂质体转染试剂盒将Smad3 WT(野生型Smad3基因)、Smad3 EPSM(Smad3L区磷酸化位点突变)、Smad3 3S-A(Smad3C区磷酸化位点突变)3种质粒转染至HepG2细胞中,经G418筛选阳性细胞,Western blot法鉴定3种质粒稳转细胞株的转染效率。MTT法检测细胞增殖情况。流式细胞术检测细胞周期及凋亡。结果 Western blot结果显示,转染相应质粒的HepG2细胞高表达目的蛋白,提示稳转细胞株构建成功。MTT结果显示,在缺乏TGF-β_1刺激情况下,转染3种质粒后对HepG2细胞增殖几乎没有影响,TGF-β_1能够诱导稳转细胞株的细胞增殖,且转染Smad3 EPSM质粒的HepG2细胞,较未转染、转染Smad3 WT或Smad3 3S-A质粒的HepG2细胞对TGF-β_1诱导的细胞增殖反应减弱。细胞周期分析显示,TGF-β_1刺激下,转染Smad3 EPSM质粒组G_0/G_1期细胞数明显增多,而转染Smad3 3S-A质粒组G_2/M期细胞数增加明显。细胞凋亡检测显示,TGF-β_1刺激下,较未转染和转染Smad3 WT质粒组,转染Smad3 EPSM质粒组细胞凋亡率明显增加,而转染Smad3 3S-A质粒组细胞凋亡率明显降低。结论成功建立Smad3 WT、Smad3 EPSM及Smad3 3S-A 3种质粒稳转HepG2细胞株,为进一步探讨开发能够经由调控p Smad3C、p Smad3L的药物提供一定的基础。     

Fragrance material review on 1-phenyl-3-methyl-3-pentanol

A toxicologic and dermatologic review of 1-phenyl-3-methyl-3-pentanol when used as a fragrance ingredient is presented. 1-Phenyl-3-methyl-3-pentanol is a member of the fragrance structural group Aryl Alkyl Alcohols and is a tertiary alcohol. The AAAs are a structurally diverse class of fragrance ingredients that includes primary, secondary, and tertiary alkyl alcohols covalently bonded to an aryl (Ar) group, which may be either a substituted or unsubstituted benzene ring. The common structural element for the AAA fragrance ingredients is an alcohol group -C-(R1)(R2)OH and generically the AAA fragrances can be represented as an Ar-Alkyl-C-(R1)(R2)OH group. This review contains a detailed summary of all available toxicology and dermatology papers that are related to this individual fragrance ingredient and is not intended as a stand-alone document. Available data for 1-phenyl-3-methyl-3-pentanol were evaluated then summarized and includes physical properties, acute toxicity, skin irritation, mucous membrane (eye) irritation, skin sensitization, and genotoxicity data. A safety assessment of the entire Aryl Alkyl Alcohols will be published simultaneously with this document; please refer to Belsito et al. (2012) for an overall assessment of the safe use of this material and all Aryl Alkyl Alcohols in fragrances.     

互隔交链孢霉素对NIH/3T3细胞毒性的作用

目的 研究互隔交链孢霉素(altenuene,ALT)对NIH/3T3细胞的毒性作用,为互隔交链孢霉的致癌机制提供理论依据.方法 以互隔交链孢酚(alternariol,AOH)为阳性对照,采用形态学观察,噻唑蓝法,生长曲线,流式细胞术(FCM)等方法检测不同浓度的ALT对NIH/3T3细胞生长的影响及细胞周期的改变.结果 ALT对NIH/3T3细胞的半数抑制率为76.4、50和100 μmol/L的ALT染毒24 h可使NIH/3T3细胞生长曲线明显下降,并有明显的形态学改变;以10.0、20.0和50.0 μmol/L的ALT染毒24 h后,与对照组比较,G2/M期细胞比例增加,且差异有统计学意义(P<0.05).结论 ALT对NIH/3T3细胞有毒性作用,可抑制细胞增殖并诱导G2/M期细胞阻滞,其细胞抑制作用可能与细胞周期阻滞有关.     

The short term exposition of AgNO3 on 3T3 mouse fibroblasts cell line

There is an increasing interest in using of silver coated (silver nitrate, silver alloy, silver oxide) catheters for hospital patients. Clinical trials with silver-coated urinary catheters have shown conflicting results. The most often performed catheterization is for a short period of time. The above observations have encouraged the authors to investigate the influence of silver nitrate (AgNO3) on 3T3 fibroblasts viability in vitro during a short time experiment (3 and 12 h). 3T3 fibroblast culture was established. The influence of AgNO3 on the viability of murine 3T3 fibroblasts with the use of trypan blue staining was evaluated. The regression curves and lethal concentrations for 90, 50 and 10% viability were calculated. The lethal concentrations of AgNO3 after 3 h exposition were as follows LC10=0.98, LC50=6.44 and LC90=21.38. The lethal concentrations of AgNO3 after 12 h exposition were as follows LC10=1.05, LC50=6.91 and LC90=22.96. The LC values were similar for 3 and 12 h exposure as well. In conclusion, the silver nitrate has the similar toxic effect on 3T3 fibroblasts during the short and long exposition. Attention should be paid when catheter has a close contact to injured urothelium even for a short period of time.     

聚羟基丁酸与羟基辛酸-阿奇霉素缓释微球的研究

目的研究聚羟基丁酸与羟基辛酸(PHBHOx)载阿奇霉素微球的制备技术、体外性能及在小鼠体内的药代动力学行为。方法采用静电纺丝法制备PHBHOx载阿奇霉素微球,运用三因素三水平响应面法优化了制备工艺条件。以pH7.4磷酸盐缓冲液(PBS)为释放介质考察了微球的体外释药性能。通过尾静脉将微球注入小鼠体内,运用高效液相色谱法(HPLC)检测了药代动力学参数。结果微球制备的最适条件为:PH-BHOx的浓度为6.47%,阿奇霉素与PHBHOx质量比为1∶2.7,静电电压为12kV。在扫描电镜下,微球呈圆球形,外观较圆整;粒径分布均匀,在3～30μm;包封率达60%以上;体外释放45d累计释药率达80%,释药曲线符合Higuchi方程。与阿奇霉素溶液相比,小鼠尾静脉注射PHBHOx载阿奇霉素微球后,药物的达峰浓度显著降低,具有较好的缓释性能。结论 PHBHOx载阿奇霉素微球的制备技术可行,重现性好,有望构建一个新的长效缓释给药系统,并为进一步开展靶向PHBHOx载药缓释微球制剂的研究奠定了基础。