盐酸奥洛他定片处方及制备工艺研究

目的:考察及筛选盐酸奥洛他定片的处方及制备工艺。方法:通过系列试验筛选崩解剂用量、片剂硬度、粉末直接压片和湿法制粒工艺、主要与辅料混合工艺等条件,确定处方及制备工艺。结果:确定了盐酸奥洛他定片的处方和制备工艺,崩解剂交联羧甲基纤维素钠用量为5%,采用等量递加法混合后湿法制粒,控制片剂硬度在40N-50N之间压片,薄膜包衣,即得。结论:盐酸奥洛他定片的处方合理、工艺可行,符合片剂的质量标准。     

恩替卡韦薄膜衣片处方工艺研究

<正>1处方依据、剂型选择、处方及制备工艺1.1处方依据恩替卡韦白色至类白色粉末;微溶于水。分子式:C12H15N5O3·H2O分子量:295.3结构式(图1):参考市售品说明书,其薄膜衣片片芯的处方组成为:乳糖一水合物、微晶纤维素、交联聚维酮、聚维酮、硬脂酸镁。1.2剂型选择我公司开发的恩替卡韦片为薄膜包衣片,两个规格分别为0.5mg和1.0mg。适应症为HBV活动性复制和血清转氨酶(ALT或     

川芎嗪与冰片处方配比与组合物的巴布剂基质处方的正交设计优化研究

目的:考察优化川芎嗪与冰片处方配比与组合物的巴布剂基质处方。方法:采用家兔离体皮肤透皮试验考察川芎嗪与冰片处方配比,采用正交设计筛选CMC-Na、NP-700、二氧化钛和丙三醇的用量。结果:川芎嗪与冰片处方最佳配比50:1;最佳处方为NP-700 6.0 g、二氧化钛0.5g、丙三醇10.0g和CMC-Na 0.5g。结论:通过优化处方配比,可制得黏附性能良好的川芎嗪与冰片巴布剂。     

康柏西普在糖尿病大鼠早期视网膜病变中的作用及对VEGF、ICAM-1及CRP的影响

摘要 目的：探讨康柏西普在糖尿病大鼠早期视网膜病变中的作用及对血管内皮生长因子 (vascular endothelial growth factor,VEGF)和细胞间粘附分子-1(Intercellular adhesion molecule-1,ICAM-1)及C-反应蛋白(C-reactive protein,CRP)的影响。方法：糖尿病大鼠早期视网膜病变模型(n=27)随机平分为三组-模型组、替米沙坦组与康柏西普组,造模成功后当天三组分别给予注射生理盐水、替米沙坦、康柏西普治疗,1次/w,持续4 w,检测VEGF、ICAM-1及CRP表达情况。结果：大鼠造模成功后均出现食欲增多、饮水、尿量、体重减轻的现象。替米沙坦组与康柏西普组治疗第1 w与第4 w的体重高于模型组(P<0.05),康柏西普组高于替米沙坦组(P<0.05)。替米沙坦组与康柏西普组治疗第1 w与第4 w的空腹血糖低于模型组(P<0.05),康柏西普组低于替米沙坦组(P<0.05)。替米沙坦组与康柏西普组治疗第4 w的视网膜VEGF、ICAM-1、CRP蛋白相对表达水平低于模型组(P<0.05),康柏西普组低于替米沙坦组(P<0.05)。康柏西普组视网膜厚度变薄不明显,内、外核层细胞排列整齐,神经纤维层未见明显空泡样变性。结论：康柏西普在糖尿病大鼠早期视网膜病变中的应用能抑制VEGF、ICAM-1及CRP的表达,能促进降低血糖,增加大鼠体重。     

苦胆草片薄膜包衣工艺研究

实验研究了用薄膜包衣预混剂（Dry Suspension for Film Coating)新菲尔（THIN FILM）用于苦胆草片的包衣方法,并用正交试验确定最佳工艺条件,结果表明：最佳条件为：包衣液浓度20%,流量0.15-0.18kg/min,颗粒水分3%-5%,硬度4-5kg/mm^2最主要的影响因素为包衣液的浓度,且新菲尔包制的薄膜衣片经过与糖衣片相比,其抗湿性优于糖衣片,且增重小,缩短了工作时间。     

除虫菊内生镰孢菌Y2发酵条件优化及其抑菌活性

从除虫菊叶中筛选到1株内生真菌Fusarium sp．Y2,对其进行了基础培养基的筛选及培养条件优化研究。结果表明,Y2菌株的较佳发酵培养基为：每L培养基中含有麦芽糖10g、蛋白胨6g、KH2PO42g、KCl 1g、FeSO40．02g、MgSO4·7H2O1g;较佳发酵条件为：初始pH8．5,250mL三角瓶装液100mL,摇床转速180r／min,培养温度28．0℃,接种量21％。在此条件下与原始发酵条件相比,Y2菌株发酵液对番茄灰霉病菌菌丝生长抑制率达98．6％,提高了6．8％;对其孢子萌发抑制率达95．4％,提高了16．1％;其茵丝生长量（干质量）达8．975mg／mL,增加了7．8％。     

正交设计法优选妇宁康凝胶剂的基质配方

目的优选妇宁康凝胶剂的基质配方。方法通过体外释药试验,采用HPLC法测定接收液中甘草酸含量,并计算甘草酸释药速率;以甘草酸释药速率为筛选指标,采用L9（3^4）正交试验对妇宁康凝胶剂的的基质配方进行优选。结果妇宁康凝胶剂的最佳基质配方为：卡伯姆2％,甘油5％,EDTA-2Na0．006％,丙二醇10％,三乙醇胺约1g。结论甘草酸体外释药符合Higuchi方程,配方中甘油和丙二醇的含量为主要影响因素,有极显著影响。     

替米沙坦与贝那普利治疗原发性高血压的疗效分析

目的:分析替米沙坦片与贝那普利片两种药物治疗轻中度原发性高血压的降压疗效与安全性。方法:把2013年3月至9月期间在我院治疗的90例轻中度原发性高血压患者平均分为A组和B组(每组45人),在高血压知识宣教,饮食控制,运动等常规治疗的基础上,A组给予替米沙坦治疗,B组给予贝那普利治疗,对比两组患者的治疗效果及安全性。结果:两组均能有效降低血压(P0.01),A组总有效率为94.52%,B组总有效率为89.87%,二者差别无统计学意义(P0.05)。结论:替米沙坦和贝那普利治疗轻中度高血压均具有良好的降压效果和安全性,但替米沙坦的降压效果优于贝那普利,安全性更高,是一种长效、安全、有效的降压药,值得临床推广。     

替米沙坦在糖尿病防治中的应用

替米沙坦是经典的抗血压病药物。近年来人们发现替米沙坦除可以抑制血管紧张素Ⅱ-1型受体外,还可以部分激活过氧化物酶体增殖物激活受体γ。得益于其双靶点的作用机制,替米沙坦可以通过改善糖脂代谢紊乱和缓解糖尿病带来的并发症而使糖尿病或糖尿病高危病人获益。本文就替米沙坦在糖尿病预防和治疗中的作用及相关的机制研究作一阐述。     

高浓度丁醇浸泡及N＋束注入诱变双重作用筛选丁醇高产菌

通过高浓度丁醇浸泡处理丙酮丁醇梭菌（Clostridiumacetobutylicum）CL-2,筛选得到一株丁醇耐受能力提高并溶剂产量增加的菌株BR30—2,丁醇产量达11．77g/L,比CL-2提高了16．65％。以BR30—2作为出发菌株,进行N＋束注入诱变,筛选得到高产菌株BH．9,丁醇产量达14．5g/L,总溶剂为23．14g／L。在BH-9发酵过程中添加0．1％丁酸钠,丁醇产量达到16．59g/L,丁醇比例提高至67．38％。     

Recent advances in the study of Kaposi's sarcoma-associated herpesvirus replication and pathogenesis

It has now been over twenty years since a novel herpesviral genome was identified in Kaposi's sarcoma biopsies. Since then, the cumulative research effort by molecular biologists, virologists, clinicians, and epidemiologists alike has led to the extensive characterization of this tumor virus, Kaposi's sarcoma-associated herpesvirus(KSHV; also known as human herpesvirus 8(HHV-8)), and its associated diseases. Here we review the current knowledge of KSHV biology and pathogenesis, with a particular emphasis on new and exciting advances in the field of epigenetics. We also discuss the development and practicality of various cell culture and animal model systems to study KSHV replication and pathogenesis.     

The structure, reproduction and taxonomy of Vidalia and Osmundaria (Rhodophyta, Rhodomelaceae)

Comprises species occurring mostly in subtidal habitats in tropical, subtropical and warm-temperate areas of the world. An analysis of the type species, V. spiralis (Sonder) Lamouroux ex J. Agardh, a species from Australia, establishes basic characters for distinguishing species in the genus. These characters are (1) branching patterns of thalli, (2) flat blades that may be spiralled on their axis, (3) width of the blade, (4) primary or secondary derivation of sterile and fertile branchlets and (5) position of sterile and fertile branchlets on the thalli. Application of the latter two characters provides an important basic method for separation of species into three major groups. Osmundaria , a genus known only in southern Australia, was studied in relation to Vidalia , and its separation from the Vidalia assemblage is not accepted. Species of Vidalia therefore are transferred to the older genus name, Osmundaria. Two new species, Osmundaria papenfussii and Osmundaria oliveae are described from Natal. Confusion in the usage of the epithet, Vidalia fimbriala Brown ex Turner has been clarified, and Vidalia gregaria Falkenberg, described as an epiphyte on Osmundaria pro/ifera Lamouroux, is revealed to be young branches of the host, Osmundaria prolifera.     

New or rare chromosome counts in Artemisia L. (Asteraceae, Anthemideae) and related genera from Kazakhstan

Fifteen chromosome counts of six Artemisia taxa and one species of each of the genera Brachanthemum, Hippolytia, Kaschgaria, Lepidolopsis and Turaniphytum are reported from Kazakhstan. Three of them are new reports, two are not consistent with previous counts and the remainder are confirmations of very scarce (one to four) earlier records. All the populations studied have the same basic chromosome number, x = 9, with ploidy levels ranging from 2x to 6x. Some correlations between ploidy level, morphological characters and distribution are noted.     

肝癌中HBV和HCV基因和抗原的分布及意义

采用原位分子杂交方法检测HCV RNA及HBV X基因;采用免疫组织化学方法研究HCV核心抗原,非结构区C33c抗原及HBxAg在肝细胞肝癌中的定位及分布.结果表明(1)HCV RNA、HBV X基因在肝细胞肝癌组织检出率分别为40%(55/136)和82%(112/136).HCV RNA定位于癌细胞的胞浆内,阳性细胞呈散在、灶状及弥漫分布三种形式;HBV X基因在肝癌细胞中的分布呈胞浆型、核型及核浆型,阳性细胞也呈上述三种分布形式;(2)HCV C33c抗原、核心抗原在肝细胞肝癌中的阳性率为81%(133/164)及86%(141/164).C33c抗原定位于癌细胞及肝细胞的胞浆内;核心抗原既定位于癌细胞核中,又可定位于胞浆中.C33c抗原阳性细胞以灶状分布为主;而核心抗原阳性细     

Selection with two alleles and complete dominance

For a plant selection model with frequency-independent viabilities, fertilities and selfing rates, it is shown that apart from global fixation, for certain parameter combinations a protected polymorphism and facultative fixation (either allele may become fixed according to initial frequencies) may both occur. Facultative fixation requires different selling rates for the dominant and recessive type. Protection of the polymorphism requires resource allocation for male and female function. In this connection the problem of purely genetically caused population extinction is discussed.
For general frequency dependence and regular segregation, the chances for establishment of a completely recessive gene are compared to those of a completely dominant gene. It is proven that the process of establishment of the recessive gene, despite a fitness advantage, may be considerably endangered by drift effects if random mating prevails. The recessive gene may reach the same effectivity in establishment as a dominant gene, only if the recessive homozygote mates exclusively with its own type during the period of establishment.