Mechanism of Baicalein in Inhibiting Microglial Activation and Protecting SH-SY5Y Nerve Cells / 中国实验方剂学杂志

ObjectiveTo investigate the effect of baicalein （BAI） on SH-SY5Y cell injury in lipopolysaccharide （LPS）-activated BV-2 cells conditioned medium and its mechanism. MethodThe BV-2 cells were activated with 1 mg∙L-1 of LPS to establish the conditioned medium of the LPS group， and a blank group and groups of BAI with low， medium， and high concentrations （4， 8， 16 μmol∙L-1） were established. SH-SY5Y cells were cultured with the conditioned medium of each group. The cell viability of BV-2 cells in each group after the intervention was determined by cell counting kit-8 （CCK-8）. The content of tumor necrosis factor-α （TNF-α）， interleukin-6 （IL-6）， and interleukin-1β （IL-1β） in the supernatant of BV-2 cells in each group was determined by enzyme-linked immunosorbent assay （ELISA）. The protein expression of α-synuclein （α-syn） and tyrosine hydroxylase （TH） in SH-SY5Y cells was observed by immunohistochemical （IHC） staining， and the nuclear transfer of nuclear factor kappa-B p65 protein （NF-κB p65， p65） in SH-SY5Y cells was observed by immunofluorescence （IF）. The protein expression of Toll-like receptor 4（TLR4）， p65， phosphorylated p65 （p-p65）， and Myeloid differentiation factor 88 （MyD88） in SH-SY5Y cells was observed by Western blot. ResultAs compared with the blank group， the viability of BV-2 cells in the LPS group was significantly decreased （P<0.01）， and the content of TNF-α， IL-6， and IL-1β in the cell supernatant was significantly increased （P<0.01）. As compared with the LPS group， the cell viability was significantly increased in groups of BAI with low， medium， and high concentrations （P<0.01）， and TNF-α in the cell supernatant was significantly decreased （P<0.01）. The content of IL-6 in the cell supernatant was decreased in the BAI group with high concentration （P<0.05）， and the content of IL-1β in the cell supernatant was significantly decreased in the BAI groups with medium and high concentrations （P<0.01）. The results of conditioned medium cultured SH-SY5Y cells showed that as compared with the blank group， the protein expression of p65 in the LPS group entered into the nucleus and accumulated， and the protein expression of TH was significantly decreased （P<0.01）， while that of α-syn， TLR4， MyD88， and p-p65 was increased （P<0.05， P<0.01）. Compared with the LPS group， the protein expression of p65 in SH-SY5Y cells in BAI groups with low， medium， and high concentrations gradually dispersed into the cytoplasm and had the enhanced protein expression of TH （P<0.01） but the lowered protein expression of α-syn （P<0.01）. The protein expression of TLR4， MyD88， and p-p65 was decreased in the BAI group with high concentration （P<0.05， P<0.01）， the protein expression of p-p65 and MyD88 was decreased in the BAI group with medium concentration， and the protein expression of MyD88 was decreased in the BAI group with low concentration （P<0.05）. There was no significant difference in the protein expression of p65 among groups. ConclusionBAI can inhibit the activation of BV-2 cells， thereby inhibiting the inflammatory response caused by LPS and further inhibiting the damage of inflammation to SH-SY5Y cells. The mechanism may be related to the regulation of the TLR4/MyD88/NF-κB signaling pathway and reduction of the inflammatory response， thus playing a neuroprotective role.

ETCM v2.0: An update with comprehensive resource and rich annotations for traditional Chinese medicine

Existing traditional Chinese medicine (TCM)-related databases are still insufficient in data standardization, integrity and precision, and need to be updated urgently. Herein, an Encyclopedia of Traditional Chinese Medicine version 2.0 (ETCM v2.0, http://www.tcmip.cn/ETCM2/front/#/) was constructed as the latest curated database hosting 48,442 TCM formulas recorded by ancient Chinese medical books, 9872 Chinese patent drugs, 2079 Chinese medicinal materials and 38,298 ingredients. To facilitate the mechanistic research and new drug discovery, we improved the target identification method based on a two-dimensional ligand similarity search module, which provides the confirmed and/or potential targets of each ingredient, as well as their binding activities. Importantly, five TCM formulas/Chinese patent drugs/herbs/ingredients with the highest Jaccard similarity scores to the submitted drugs are offered in ETCM v2.0, which may be of significance to identify prescriptions/herbs/ingredients with similar clinical efficacy, to summarize the rules of prescription use, and to find alternative drugs for endangered Chinese medicinal materials. Moreover, ETCM v2.0 provides an enhanced JavaScript-based network visualization tool for creating, modifying and exploring multi-scale biological networks. ETCM v2.0 may be a major data warehouse for the quality marker identification of TCMs, the TCM-derived drug discovery and repurposing, and the pharmacological mechanism investigation of TCMs against various human diseases.

Outcome Indicators in Randomized Controlled Trials on Traditional Chinese Medicine Treatment of Vertigo / 中国实验方剂学杂志

ObjectiveThis study analyzed the outcome indicators in randomized controlled trials （RCTs） on traditional Chinese medicine （TCM） treatment of vertigo， aiming to provide a reference for clinical trial protocol design and the establishment of core indicator sets for vertigo treatment. MethodCNKI， Wanfang， VIP， SinoMed， PubMed， Embase， and Web of Science were searched for the RCTs on TCM treatment of vertigo， and data extraction was conducted. ResultA total of 375 RCTs involving 33 593 patients were included， from which 482 outcome indicators were extracted， with a frequency of 2 715 and an average of seven outcome indicators used for each RCT. In addition， there were some differences in outcome indicators reported by different study groups. According to the functional properties， the reported outcome indicators were classified into nine domains： clinical symptoms and signs， TCM symptom efficacy， physical and chemical examinations， quality of life， mental health， safety events， patients’ satisfaction degree， long-term prognosis， and economic evaluation. The outcome indicators with higher frequency were clinical total effective rate， total TCM symptom score， occurrence of adverse reactions， dizziness handicap inventory （DHI） score， average flow velocity of the basilar artery， incidence of adverse reactions， average flow velocity of the left vertebral artery， average flow velocity of the right vertebral artery， plasma viscosity， and vertigo score. ConclusionThe outcome indicators reported by RCTs of TCM treatment of vertigo mainly have two problems： lack of unified standards and norms and insufficient attention to outcome indicators that can reflect the characteristics of TCM. The construction of the core indicator set for TCM treatment of vertigo should fully highlight the characteristic advantages of TCM and unify the standards and norms for the outcome indicators on this basis， so as to improve the quality of clinical research and the value of secondary research.

Performance evaluation system of research institutions funded by the South Korean government / 国际中医中药杂志

Performance evaluation system of 13 research institutions funded by the South Korean government was introduced in terms of policy and management.The situation of Korea Institute of Oriental Medicine performance evaluation in 2012 was presented.A reference has been provided for further improving science and technology evaluation system of China.

Design and implementation of a resident information input system based on the android platform / 国际生物医学工程杂志

ObjectiveAn input system was designed to solve the current problems of slow creation of electronic health record caused by the difficulty of resident information input.MethodsThe system,based on the Android platform,was designed to collect and save information by using PDA devices,and to send the information to the remote receiver over the wireless network with the hybrid encryption of DES and RSA.The receiver saved the information into the relational database after decryption.ResultsThe system saved acquisition time greatly compared to the traditional method.The transmission speed,security and reception rate of the system could well satisfy the requirements of information collection.ConclusionThe system provides a better way to solving the problems of heavy workload,low efficiency and high error rate in information collection,and will play an important role in practical life.

Design and implementation of disease notification system based on HL7 standards / 国际生物医学工程杂志

Objective According to the lack of timeliness in the current domestic disease notification system,an effective solution is proposed to solve the problem.Methods Based on research and analysis of the health information exchange standards HL7 (Health Level 7),which is widely used in the world,a solution on the base of HL7 standards is proposed in this study,to store,transfer,analyze and publish data.Results The solution allows medical institutions and the centers for disease control connect seamlessly,ensuring the data transfer in time,and publishing the data through Web service.Conclusion The solution can keep the people abreast of the latest status of the epidemic,and do their own protection as well as promote social stability.

Similarity and diversity analysis of qingkailing effective components in regulating hippocampus ischemia-related genes of mice / 中国中药杂志

<p><b>OBJECTIVE</b>To compare the different gene expression profiles among Qingkailing components of BA (baicalin), JA (jasminoidin), CA (cholic acid) and CM (concha margaritiferausta) in regulating hippocampus ischemia related genes of mice.</p><p><b>METHOD</b>The hippocampus ischemia-reperfusion model mice were randomly divided into groups of BA, JA, CA, CM and M (model group), 15 mice for each group, and decapitated after 24 hours. Coronal brain slices were stained with TTC (2, 3, 5-Triphenylte trazolium Chloride) and the percentages of infarct volume were calculated. Meanwhile, total RNA were extracted from the hippocampus. We selected 374 genes which related to cerebral ischemia to find the different gene expression profiles among the Qingkailing components. Then T-tests was used to select different genes between BA and CM, JA and CM, CA and CM by Arraytrack software (P < 0. 05, Fold change > 1.5), and the pharmacodynamic characteristics were explored according to GO functional classification.</p><p><b>RESULT</b>Compared with the model group BA, JA and CA could effectively reduce infarct size of hippocampus ischemic (P < 0.05). the numbers of significantly differentially expressed genes were 41 (24 up, 17 down) between BA and CM, 22 (13 up, 9 down) between JA and CM, and 11(8 up, 3 down) between CA and CM. All of BA, JA and CA could inhibit the expression of Myb gene.</p><p><b>CONCLUSION</b>When exerting its pharmacological effects, BA, JA, CA not only have common gene targets but also have diversity in pharmacological character.</p>

Differences in pharmacological pathways among Qingkailing effective component / 中国药理学通报

AimPurpose-The aim of this study is utilizing the highthrough genechip data to Compare the difference of the pharmacological pathways among the Qingkailing effective components Baicalin(BA),Jasminoidin(JA),cholic acid(CA) and Concha margaritiferausta(CM)in the treatment process of cerebral ischemia.Methods The focal cerebral ischemia-reperfusion model mice were randomly divided into groups of Baicalin(BA),Jasminoidin(JA),cholic acid(CA),Concha margaritiferausta(CM)and model group(M),15 mice for each group,24 hours later total RNA were abstracted from the hippocampus,we selected 374 gene expression profile related to cerebral ischemia,made cDNA chip marked by Cy3/Cy5,detect the variation of different components,Then apply Arraytrack software to select differentiate expressed genes between BA and M,JA and M,CA and M,CM and M by T-tests,select genes with P<0.05,Fold change>1.5,according GeneGO software to find the top two pathways of each components.Results the number of differentiate expressed genes between BA,JA,CA,CM and M is separately 46,50,54 and 30,according to the top two pathways of GeneGo display JA,CA,CM all participate Apoptosis and survival_TNFR1 signaling pathway,besides BA participate in regulating G-protein signaling and Development_A2A receptor signaling while CA in Neurophysiological process_NMDA-dependent postsynaptic long-term potentiation in CA1 hippocampal.Conclusion Qingkailing effective components take diversity Pharmacological characteristics,BA mainly for anti-apoptosis,JA mainly for inhibit apoptosis and promote ischemic brain protection,etc,CA focused on inhibiting calcium influx,and anti-neuron variability.But CM has no good results on this.

Relationship between C677T polymorphism of methylenetetrahydrofolate reductase gene/G448A polymorphism of β-fibrinogen gene and genetic susceptibility of ischemic stroke / 国际脑血管病杂志

Objective To investigate the relationship between the C677T polymor-phism of the methylenetetrahydrofolate reductase (MTHFR) gene/G448A polymorphism of the

Electrochemistry-based design of a detector for saliva glucose / 中国组织工程研究

A kind of saliva glucose detector based on electrochemistry is designed to measure the saliva glucose of diabetes mellitus, so as to achieve non-invasive measurement for diabetes mellitus state. A Prussian blue modified glassy carbon electrode was designed as the working electrode of the three-electrode system to improve the electrode sensitivity to H2O2's electrochemical reaction in a lower voltage. A three-electrode system was employed for measuring the current generated by the oxidation-reduction reaction of glucose catalyzed by glucose oxidase. Technique of shield-driving was used to avoid the attenuation of the voltage when it was processed, so as to ensure the precision measurement. A single chip microcomputer, C8051F020, was used to control the system and provide scanning voltage for the electrode, make A/D transition and process the result. Then the outputs were displayed on liquid crystal display. This detector's operating voltage was 0.496 V. The sensitivity was 0.1 mmol/L. There was a constant of proportionality between the measuring results of this detector and the precise analysator, Lanbiao LK98B. Results of the study show that this detector has low operating voltage, high sensitivity and good function of whole system, and can meet the request of measure.