薄层扫描法测定肠康片中盐酸小檗碱的含量

目的:测定肠康片中有效成份盐酸小檗碱的含量.方法:双波长薄层扫描法.结果:盐酸小檗碱点样量在0.19～0.97μg的范围内,点样量与斑点峰面积积分值具有良好的线性关系.回收率为99.4%,RSD=1.6%.结论:采用薄层扫描法测定肠康片中盐酸小檗碱的含量,灵敏度高,重现性好,操作简单.     

常规法与细菌集菌法复试无菌检测中可疑阳性样品的结果比较

目的:建立鉴定样品灭菌彻底与否的方法,以杜绝药物医疗事故的发生.方法:将常规法检测中的可疑阳性样品(5个品种、20批次),用常规法和细菌集菌法进行复试.结果:常规法复试的阳性率为0;细菌集菌法复试的阳性率为65.0%,其中20%甘露醇注射液为87.5%,5%葡萄糖注射液为66.6%,10%葡萄糖注射液为50.0%.结论:细菌集菌法不受外环境污染,能高效、快速、准确地检验样品的灭菌情况,是药物制剂质量控制的好方法.     

反相高效液相色谱法测定注射用盐酸米诺环素含量

目的:探讨用反相高效液相色谱法(RP-HPLC法)测定注射用盐酸米诺环素中盐酸米诺环素含量.方法:采用Waters 2690-996高效液相色谱仪,以Nucleodur C18柱(250 mm×4.6 mm,5μm)为色谱柱,流动相为乙腈-水-三氟乙酸(15:85:0.1,V/V),流速为1.4 mL/min,检测波长为350 nm.结果:盐酸米诺环素的浓度在(12.5～800)μg/mL范围内与峰面积线性关系良好(r=0.999 9),平均回收率为103.24%,RSD=0.52%.结论:该方法操作简便、灵敏、快速,适用于盐酸米诺环素的含量测定.     

甘肃产当归的商品规格与其阿魏酸含量的相关性初探

采用高效液相色谱法测定不同商品规格的甘肃产当归中阿魏酸含量,对当归的商品规格与阿魏酸含量的关系进行初步探索.结果表明:当归的商品规格等级高低与阿魏酸含量之间无明显相关性.     

紫外分光光度法测定盐酸川芎嗪氯化钠注射液中盐酸川芎嗪含量

目的:建立盐酸川芎嗪氯化钠注射液中盐酸川芎嗪的含量检测方法.方法:采用紫外分光光度法,检测波长为295nm.结果:盐酸川芎嗪在3.0～15.0μg·ml-1范围内呈良好线性关系(r=1.0000,n=5),回收率为100.3%,RSD为0.65%(n=5).结论:本法操作简便、快捷,结果准确,尤适用于药厂、医院对该制剂半成品的质量控制和快速分析.     

DHS治疗股骨转子部骨折的临床应用体会

随着社会人口老龄化,股骨转子部骨折的发生率不断增高。虽然股骨转子部血运丰富,骨折容易愈合;但是如果处理不当,仍然可能预后功能不良。笔者回顾了我科自2001年8月至2004年5月期间应用动力髋螺钉(DHS)内固定治疗89例股骨转子部骨折,报道如下。临床资料本组89例,男33例,女56例;     

补肾方含药血清促进PC12细胞增殖及其拮抗谷氨酸神经毒作用的研究

目的运用中药血清药理学方法研究补肾复方含药血清(BS)促进体外培养的PC12细胞增殖及其拮抗谷氨酸兴奋性神经毒损伤的作用.方法以MTT法观察BS对体外培养的PC12细胞活力的影响及其拮抗谷氨酸损伤的作用,采用流式细胞仪观察BS对谷氨酸所诱导PC12细胞凋亡的影响.结果 BS含药血清可以增强PC12细胞活力,拮抗谷氨酸的兴奋性神经毒作用且在20%浓度时作用最强,并且能够抑制谷氨酸诱导的PC12细胞早期凋亡.结论补肾方BS可能具有神经保护作用.     

生化药物质量控制研究中应注意的问题

生化药物是从生物体分离、纯化所得的用于预防、治疗和诊断疾病的生化基本物质,以及用化学合成、微生物合成或现代生物技术制得的这类物质。生化药物有两个基本特点:其一,它来自生物体;其二,它是生物体中的基本生化成分。生化药物的生化基本物质主要包括氨基酸、肽、蛋白质、酶     

Novel estrogen receptor ligands and their structure–activity relationship evaluated by scintillation proximity assay for high‐throughput screening

The estrogen receptor (ER) is an important drug target with allosteric characteristics that binds orthotopic hormones and other ligands. A recently developed scintillation proximity (SPA)‐based assay for high‐throughput screening (HTS) of compound libraries was used to identify novel estrogen receptor ligands that might have ER subtype selective binding activity. Radioligand binding was determined in a multi‐detector scintillation counter designed for microtitration plates. Equilibrium binding experiments and kinetic competition tests were performed with [³H]‐estradiol and human ERα and ERβ receptors. A library of 6,000 structurally diverse compounds was screened. From this, several novel ligands were identified that showed pronounced subtype‐selective differences in ligand binding for ERα and ERβ. The observed equilibrium dissociation constant (K_d) for the binding of [³H]estradiol to ERα and ERβ receptors were approximately 0.25 and 0.64 nM, respectively. When 17β‐estradiol, raloxifene and daidzein were tested for binding affinity to ERα in a competition assay, the IC₅₀ values were 0.34, 1.31, and 75.6 nM, respectively. When tested for binding affinity to ERβ, the IC₅₀ values were 1.05, 11.4, and 10.6 nM, respectively. The results obtained show that the methodology is valid in comparison to previously published data regarding estradiol and other standard compounds (raloxifene and daidzein) binding characteristics of estrogen receptors. The assay is also well suited to applied research as a tool in HTS of compound libraries in the search of ER ligands. Several novel active compounds were identified and selected as potent ER subtype ligands. Drug Dev Res 64:203–212, 2005. © 2005 Wiley‐Liss, Inc.     

经方医学新论(续)

张仲景的《伤寒论》和《金匮要略》是经方医学的代表性著作，尽管其在中医学的发展历史中，不断地融入了医经医学的思想。前文认为，经方医学的科学性就在于经方医学严格地定义了每一个方剂。近年来，对汉代度量衡的研究取得了重要成果，许多学者对以容器计量和以个数计量的药物进行了实测，这些成果使我们能够对经方在古代的运用有了更明确的认识，也使我们能够准确地描述每一个经方。