金标免疫层析法测定前列腺抗原方法的应用

目的：采用前列腺抗原（ＰＳＡ）单抗标记胶体金的方法。测定ＰＳＡ抗原。方法：采用柠檬酸三钠还原法制备胶体金、金标免疫层析方法（ＧＳＬＩＡ）测定。结果：将金标方法与ＥＬＩＳＡ方法进行比较灵敏度、特异性、其两者无显著性差异。金标方法可在室温放置１年以上。结论：金标免疫层析法测定前列腺抗原，是一种快速、简便、灵敏的筛选前列腺癌患者的诊断方法。     

7-(4,7-二取代香豆素-3-乙酰氨基)头孢菌素的合成

本文根据构效关系,设计并合成了17个7-(4,7-二取代香豆素-3-乙酰氨基)头孢菌素衍生物。其缩合方法采用酰氯法、Vilsmeier试剂法及混合酐法。初步体外抑菌试验表明,化合物对革兰氏阳性菌和少数革兰氏阴性菌有较强的抗菌作用。进一步药理试验尚在进行。     

Synthesis of 14C‐labeled and tritiated AMPA potentiator LY450108

Asymmetric synthesis of AMPA potentiator LY450108‐[¹⁴C] containing ¹⁴C‐label attached to the chiral center of the molecule, was accomplished based on Evans' chiral oxazolidinone auxiliary method. Diastereoselective methylation of p‐nitrophenylacetic acid derivative was used as a key step. The auxiliary was reductively removed, and the resulting primary alcohol was converted into the corresponding amine. Its sulfonylation, reduction of the aromatic nitro group, and acylation with 3,5‐difluorobenzoyl chloride led to the final product. The synthesis of tritiated LY450108 is also detailed. Copyright © 2005 John Wiley & Sons, Ltd.     

Gold(III) porphyrin complex is more potent than cisplatin in inhibiting growth of nasopharyngeal carcinoma in vitro and in vivo

Nasopharyngeal carcinoma (NPC) is a common neoplasm in Southeastern Asia, and cisplatin‐containing regimens for combinational chemotherapy are widely used for treating locally recurrent or metastatic diseases. However, resistance to cisplatin is not infrequently seen and its associated side effects may be life‐threatening. In this report, another metallo‐pharmaceutical agent gold(III) porphyrin complex [Au(TPP)]Cl was investigated in comparison to cisplatin for its in vitro and in vivo anticancer effects. Through induction of the intrinsic apoptosis pathway, [Au(TPP)]Cl exhibited 100‐fold higher potency than cisplatin in killing NPC cells, including cisplatin‐sensitive and cisplatin‐resistant variants, and also an variant harboring the Epstein‐Barr virus. In addition, a safety concentration window was demonstrated, allowing [Au(TPP)]Cl to kill tumors with minimal cytotoxicity to noncancerous cells. More importantly, weekly intraperitoneal injection of 3 mg/kg [Au(TPP)]Cl was more effective than the same dose of cisplatin in inducing tumor apoptosis in vivo and remarkably inhibited tumor growth in animals without any noticeable side effect. [Au(TPP)]Cl therefore is a promising chemotherapeutic agent that deserves further development as a novel drug for the treatment of advanced NPC, in particular, for cases with cisplatin‐resistance. © 2008 Wiley‐Liss, Inc.     

The use of gold weight in facial palsy lagophthalmos

Peripheral facial paralysis is often accompanied by incomplete closure of the lid. In the past, tarsorrhaphy has been the primary method for achieving improved eyelid closure, but it has functional and cosmetic drawbacks.As an alternative, a gold weight implant has been used for closure of the upper lid by gravity and, ifnecessary, can be combined with further rehabilitative facial surgery. A total of 36 patients with peripheral facial paresis were treated with gold weight upper lid implants. Postoperative closure of the lids was sufficient in all cases. Complications were observed, such as pseudoptosis, deficiency of eyelid closure, a prominent bulge of the gold implant, in one case frank extrusion of the gold implant, and, surprisingly, in several cases the formation of a low grade corneal astigmatism. The satisfactory functional results show that the implant is both aesthetically and functionally superior to tarsorrhaphy. Received: 4 March 1998 / Accepted: 25 May 1999     

金电极阳极溶出伏安法测定河产品中微量砷

采用金电极阳极溶出伏安法测定食品中微量的砷,以还原蒸馏法分离干扰离子,在静止溶液中富集As~(3+),此法测定范围可从25—400ppb。用本方法分析水质、饮料、植物油、河产品中微量的砷可得到满意结果。     

ABO反定型试剂红细胞的质量控制

已知血型的试剂红细胞是ABO血型的血清学鉴定中检测抗体必不可少的试剂。为了提高ABO血型检定结果的准确性，解决自制试剂红细胞无标准和无质控的问题，本研究组建立了ABO反定型试剂红细胞的质控方法，进行了试剂红细胞的特异性和亲和性检测、振荡检测、流式细胞术和原子显微镜观察。通过筛选建立了质控参考品，并在此基础上确定质量检定标准及质控方法，同时对制备的3批次试剂红细胞进行了评价。研究结果表明：制备的反定型试剂红细胞既能保证质量和性能的稳定，又能最大限度地降低批次间的差异。结论：制备的AB0反定型试剂红细胞解决了自制红细胞的质控问题，并能提高血型检定结果的准确性。     

Comparison of pyridoxal phosphate-supplemented reagent kits for alanine aminotransferase using centrifugal analysis

The addition of pyridoxal-5-phosphate for assay of alanine aminotransferase has been recommended. The referral methods are inconvenient for high volume instrumentation due to use of multiple reagents and blanks. We adapted a well-documented method to the centrifugal analyzer as a reference for adaptation of two kit methods. Reference intervals obtained and linearity determined were all similar. The kit methods compared favorably to the referral method. Linear regression analysis yielded the following: DOW = 1.011 BERG + 1.666, r = 0.9965; SKI = 0.938 BERG + 4.559, r = 0.9926; and DSKI = 1.028 BERG + 1.051, r = 0.9889. Precision of the assays was acceptable. We concluded that automation of reagent kits incorporating pyridoxal-5-phosphate is feasible and the assays compared favorably to a recommended method. High volume instrumentation can be used without denigration of analytical quality and to allow comparability to a documented method for interlaboratory review.