作为生物医药产业的一部分,医疗器械行业的发展越来越受到我国相关部门的重视.为此,对我国医疗器械行业的市场绩效情况进行分析总结.同时基于产业组织理论的研究成果,对我国医疗器械行业市场绩效方面存在的问题进行归因探究,进而为加快我国医疗器械行业的发展提供参考与建议.

An empirical model was established to study the relationship between market structure and market performance in Chinese medical devices industry based on the hypothesis of industrial organization theories and the sample data of 16 medical devices listed companies from 2007 to 2012. The empirical results proved the view of SCP hypothesis, namely the market structure determines the performance in the medical devices industry. Based on the results, objective and feasible reference and suggestions were proposed in the end of the paper for the development of Chinese medical devices industry.

Heat shock protein 90 (Hsp90), whose inhibitors have shown promising activity in clinical trials, is an attractive anticancer target. In this work, we first explored the significant pharmacophore features needed for Hsp90 inhibitors by generating a 3D-QSAR pharmacophore model. It was then used to virtually screen the SPECS databases, identifying 17 hits. Compound S1 and S13 exhibited the most potent inhibitory activity against Hsp90, with IC50 value 1.61±0.28 μM and 2.83±0.67 μM, respectively. Binding patterns analysis of the two compounds with Hsp90 revealed reasonable interaction modes. Further evaluation showed that the compounds exhibited good anti-proliferative effects against a series of cancer cell lines with high expression level of Hsp90. Meanwhile, S13 induced cell apoptosis in a dose-dependent manner in different cell lines. Based on the consideration of binding affinities, physicochemical properties and toxicities, 24 derivatives of S13 were designed, leading to the more promising compound S40, which deserves further optimization.

This paper discussed the current status of logistics distribution system in China for the essential medicines and analyzed the problems occurred in the implementation of the essential drug distribution system,and put forward suggestions to improve the accessibility of essential medicines.

目的:探讨我国基本药物制度中物流配送方面的现状和困境,提出相应的看法和建议.方法:通过对基本药物制度实施过程中物流配送体系存在的问题进行分析,借鉴国外经验,提出相应的建议.结果与结论:基本药物制度物流配送管理应法制化和规范化,要充分利用有利的物流资源,实现基本药物制度物流配送体系的现代化良性发展.

The Aurora proteins are critical regulators of major mitotic events and attractive targets for anticancer therapy. 3D-QSAR studies based on molecular docking were performed on a dataset of 40 4-aminoquinazolines compounds. The CoMSIA model produced significantly better results than CoMFA model, with q(2) = 0.652 and r(2) = 0.991. The contours analysis provides useful information about the structural requirements for 4-aminoquinazolines for inhibiting Aurora B. Scaffold hopping method was used to generate new structures based on the maximum common substructure of the training and test set compounds. The ADMET property, binding affinity and inhibitory activity of the new designed compounds were predicted, respectively. Finally 16 compounds were identified as the novel inhibitors for Aurora B kinase.

Protein kinase CK2, a member of the serine/threonine kinase family, is an attractive therapeutic target for anticancer combination therapy. A multiple structure-based modeling approach complemented with shape components was taken to build a reliable pharmacophore model for ATP-competitive CK2 inhibitors. The final model consisted of one hydrogen bond acceptor (HBA), one hydrogen bond donor (HBD), two hydrophobic (HY) features, several excluded volumes and shape constraints. In the validation study, this model yielded an enrichment factor of 10.22 and performed fairly well in distinguishing active compounds. SPECS database was searched based on this query and sixteen compounds were retained after multiple filtrations for biological test. 4 compounds with IC50 values less than 10 mu M were disclosed, providing 2 new chemical scaffolds as CK2 inhibitors. It is expected that the information provided here is helpful for discovering more potential CK2 inhibitors.

IκB kinase β (IKKβ) is an important anti-cancer target that plays crucial role in activating the transcription factor NF-κB in response to various inflammatory stimuli. In order to discover novel IKKβ inhibitors, a 3D chemical-feature-based QSAR pharmacophore model was established. A homology model of IKKβ enzyme was also developed to study the binding mode of IKKβ and its inhibitors. The two models were consistent in predicting the binding conformation of IKKβ inhibitor. Based on the virtual screening using the pharmacophore model, 16 compounds from SPECS database were selected after multiple filtrations for biological test. Two compounds with IC50 values lower than 10 μM were discovered.