Interpenetrated metal-organic frameworks with enhanced photoluminescence for selective recognition of m-xylene from xylene isomers.

Two novel luminescent metal-organic frameworks (MOFs), [Zn3(TCA)2(BPB)2]n (DZU-101, where H3TCA = 4,4',4''-tricarboxyltriphenylamine and BPB = 1,4-bis(pyrid-4-yl)benzene) and [Zn3(TCA)2(BPB)DMA]n (DZU-102), based on the same ligands and metal ions were synthesized by regulating the amount of water in the solvothermal reaction system. Structural analyses show that the two MOFs have pillar-layered frameworks with Zn3 clusters connected by the TCA3- and BPB ligands. Interestingly, DZU-102 possessed a two-fold interpenetrated framework distinct from the individual network of DZU-101. As a result, DZU-102 showed a visual fluorescence color change from chartreuse to azure in m-xylene, while the fluorescence color was turquoise in p-/o-xylene with no change. Furthermore, compared with p/o-xylene, the fluorescence emission peak of DZU-102 in m-xylene suspension produced an obvious blue shift. Moreover, selective fluorescence sensing experiments were also carried out, which demonstrated that the degree of peak shift was related to the concentration of m-xylene, indicating the potential application of DZU-102 in fluorescence sensing of m-xylene from xylene isomers and further revealed the application of structural interpenetration for luminescence tuning of MOFs.

Dynamically manipulating third-harmonic generation of phase change material with gap-plasmon resonators.

Here we theoretically demonstrate a dynamic third-harmonic generation (THG) device by incorporating chalcogenide phase change material (Ge2Sb2Te5) into ultra-small cavities of gap-plasmon resonators. Through coupling to plasmonic resonances, the THG efficiency of Ge2Sb2Te5 is increased up to five orders of magnitude due to the greatly enhanced electromagnetic fields within the ultra-small cavities. More interestingly, the THG signals of the proposed device can be dynamically switched on and off by tuning the phase states of Ge2Sb2Te5 between amorphous and crystalline. Our proposed dynamic THG nanostructures are beneficial to developing dynamic nonlinear nanophotonic devices.

Increased expression of the HDAC9 gene is associated with antiestrogen resistance of breast cancers.

Estrogens play a pivotal role in breast cancer etiology, and endocrine therapy remains the main first line treatment for estrogen receptor-alpha (ERα)-positive breast cancer. ER are transcription factors whose activity is finely regulated by various regulatory complexes, including histone deacetylases (HDACs). Here, we investigated the role of HDAC9 in ERα signaling and response to antiestrogens in breast cancer cells. Various Michigan Cancer Foundation-7 (MCF7) breast cancer cell lines that overexpress class IIa HDAC9 or that are resistant to the partial antiestrogen 4-hydroxy-tamoxifen (OHTam) were used to study phenotypic changes in response to ER ligands by using transcriptomic and gene set enrichment analyses. Kaplan-Meier survival analyses were performed using public transcriptomic datasets from human breast cancer biopsies. In MCF7 breast cancer cells, HDAC9 decreased ERα mRNA and protein expression and inhibited its transcriptional activity. Conversely, HDAC9 mRNA was strongly overexpressed in OHTam-resistant MCF7 cells and in ERα-negative breast tumor cell lines. Moreover, HDAC9-overexpressing cells were less sensitive to OHTam antiproliferative effects compared with parental MCF7 cells. Several genes (including MUC1, SMC3 and S100P) were similarly deregulated in OHTam-resistant and in HDAC9-overexpressing MCF7 cells. Finally, HDAC9 expression was positively associated with genes upregulated in endocrine therapy-resistant breast cancers and high HDAC9 levels were associated with worse prognosis in patients treated with OHTam. These results demonstrate the complex interactions of class IIa HDAC9 with ERα signaling in breast cancer cells and its effect on the response to hormone therapy.

Efficacy and safety of PEG-rhG-CSF therapy in the primary and secondary prevention of chemotherapy-induced neutropenia / 中国肿瘤临床

Objective: To evaluate the efficacy and safety of PEG-rhG-CSF therapy in the primary and secondary prevention of chemo-therapy-induced neutropenia . Methods: This single-center, one-arm, and open-label clinical study involved 217 patients with non-my-eloid malignant tumors. These patients included 18 gynecologic oncology (3 endometrial and 15 ovarian cancer), 50 breast cancer, 30 bone tumor, and 119 lymphoma patients who underwent a total of 774 cycles of chemotherapy, comprising 146 primary and 71 sec-ondary prevention patients. The patients ≥45 kg and those <45 kg received a single subcutaneous injection of 6 mg and 3 mg PEG-rhG-CSF, respectively, 24-48 h after the chemotherapy was completed. All patients received only one dose of PEG-rhG-CSF admin-istration per chemotherapy cycle. Results: The overall incidence of febrile neutropenia (FN) was found to be 5.7%, with rates of 4.9% and 7.2% in the primary and secondary prevention groups, respectively. Univariate and multivariate Logistic regression analyses re-vealed that the longer PEG-rhG-CSF was sustained in the treatment cycle, the lower the incidence of FN was. The incidence of FN was significantly lower in the second cycle of the treatment than in the first in both the primary and secondary prevention groups (cycle 1 vs. cycle 2: 11.6% vs. 4.4%, respectively, P=0.039, in the primary group; 16.9% vs. 5.6%, respectively, P=0.034, in the secondary group). The overall incidence of gradeⅣneutropenia was 10.3% (80/774), with rates of 6.7% (34/510) and 17.4% (46/264) in the primary and secondary prevention groups, respectively (P<0.001). The incidence of gradeⅣneutropenia was significantly lower in the second cy-cle of the treatment than in the first (cycle 1 vs. cycle 2: 17.1% vs. 5.3%, respectively, P=0.004, in the primary group; 46.5% vs. 11.3%, respectively, P<0.001, in the secondary group). The treatment-induced toxicity mainly involved bone pain, with 3.7% (8/217) and 1.8% (4/217) incidence rates for grade 1-2 and 3-4 bone pain, respectively. Conclusions: PEG-rhG-CSF administration can effectively reduce the incidence of FN (5.7%) when prophylactically applied to patients with non-myeloid malignant tumors. Primary prevention can sig- nificantly reduce the risk of grade IV neutropenia in all chemotherapy cycles relative to the secondary prevention.

Notch Signaling Promotes Proliferation and Migration of SW982 Synovial Sarcoma Cells / 中国医科大学学报

Objective To investigate the effect of the Notch signaling pathway on the proliferation and invasion of human SW982 synovial sarcoma cells. Methods SW982 cells and normal human synovial cells were routinely cultured, and the expression of proteins related to the Notch pathway was compared. The Notch signaling pathway was manipulated by NICD1 overexpression, CFB1 shRNA lentivirus, and the γ-secretase inhibitor, DAPT. CCK-8 and wound healing assays were carried out to investigate the role of the Notch signaling pathway in SW982 cells. Results The Notch signaling pathway clearly showed higher activity in human SW982 synovial sarcoma cells than in normal human synovial cells (P ＜ 0.05). The proliferation and invasion of SW982 cells were significantly upregulated by overexpressing NICD1; however, were suppressed by downregulating the Notch signaling pathway using CFB1 shRNA or DAPT (P ＜ 0.05). Conclusion Our findings demonstrate that the proliferation and invasion of human SW982 synovial sarcoma cells are dependent on Notch signaling pathway activity.

Weak plasmon-exciton coupling between monolayer molybdenum disulfide and aluminum disks.

Manipulation of the photoluminescence (PL) of monolayer (ML) molybdenum disulfide (MoS2) with metallic plasmonic nanostructures has attracted much more attention for potential applications in optoelectronic devices. However, due to the limitation of resonance wavelength and oxidation properties, gold and silver are not the best selections for manipulating PL of MoS2. Here, we employ aluminum (Al) disks to tune the PL of ML MoS2. We have found that PL enhancement reaches the maximum when plasmonic resonances of Al disks overlap with the absorption peaks of ML MoS2. Near-field simulations show that PL enhancement is due to weak plasmon-exciton coupling.

Anlotinib hydrochloride capsules for advanced soft tissue sarcoma: single-center data analysis of a stageⅡmulticenter clinical trial / 中国肿瘤临床

Objective: To investigate the efficacy and safety of anlotinib hydrochloride capsules for the treatment of advanced soft tissue sarcoma based on the data from Department of Bone and Soft Tissue Tumor, Peking University Cancer Hospital&Institute. Methods: Patients were randomized allocated at 2:1 ratio for the anlotinib treatment and placebo group. The treatment group received 12 mg/day of anlotinib for 14 consecutive days in a 21-day cycle. The primary end-point was progression-free survival (PFS), and the secondary end-points were disease control rate (DCR), overall survival (OS), and adverse event rate. Results: A total of 46 patients were enrolled in this study; 7 of them were excluded from per protocol set (PPS). Among the remaining 39 patients, 28 were included in the anlotinib group and 11 in the placebo group. In the anlotinib group, 4 patients had partial remission and 13 had stable disease (SD), whereas in the placebo group, 3 patients had SD. The difference in DCR between the 2 groups was statistically significant (60.7% vs . 27.3%, P=0.082). The DCR of the advanced soft tissue sarcoma in the anlotinib group was 78.6% (11/14). The median PFS in the anlotinib group was 12.4 (95% confidence interval [CI]: 7.6 to 17.2) months, which was significantly longer than 4 months in the placebo group (95% CI: 1.7 to 6.3 months, P=0.043); however, the difference in OS between the 2 groups was not significant (19.4 vs . 17.6 months, P=0.961). Regarding the safety, 2 patients had severe adverse events (7.14%) possibly related with treatment in the anlotinib group; one of them had pneumothorax. The other adverse events were grade 1 to 2. Conclusions: Soft tissue sarcoma is highly responsive to anlotinib, with prolonged PFS. Anlotinib is well tolerated and can be used as a treatment option for advanced soft tissue sarcoma.

Design of image diagnostic module for tent-form field medical system / 医疗卫生装备

Object To develop an easy-assembled and-disassembled image diagnostic module to solve the problems of the tent-form field medical system in size, weight, mobility, accessories, protection and etc, which is of high references for combination and integration scheme of large-scale digital imaging equipment by adopting box instrumentation.Methods The module had its design executed with system modeling, structure simulation and CAD after its service requirements were analyzed. The design fell into the ones for overall framework, combination mode, packaging and buffer vibration isolation, ergonomics, box instrumentation, radiography accessories for vertical and horizontal positions, protection device and etc.Results The module was gifted with radiodiagnosis-related performances such as digital radiography, digital diagnosis,diagnosis reporting, compatibility to vertical- and horizontal- position radiography, and radiation protection during war conditions.Conclusion The module developed gains advantages in power, continuous radiography, assembling and disassembling, accessories and protection, and thus meets the requirements of the tent-form field medical system in mass casualties imaging diagnosis.

Design of first aid module in tent-form field medical system / 医疗卫生装备

Objective To design a multi-function first-aid module integrating instruments with the box to solve the existing problems in integration, operation, deployment, withdrawal, environmental adaptability and etc, so as to realize integrated storage, transport and operation of the instruments. Methods The module had its structure, modes of deployment and withdrawal, instruments buffering and vibration isolation, ergonomics and etc designed with the technologies of integrating box and instruments, integration, buffering and vibration isolation, centralized oxygen and power supply as well as the methods of system modeling,structure simulation and CAD.Results The first-aid module was gifted with the functions of respiratory and circulatory rehabilitation,vital signs monitoring,emergency treatment of complex and multi injuries, which could be used as a 2 000 mm×800 mm×600 mm emergency treatment platform when deployed. There were 4 angles for adjusting the backboard to form anti-shock positions for the severe casualties.The module had the time for deployment and withdrawal not more than 5 min,and was easy to deploy,withdraw,transport and store.Conclusion The module behaves well in structure,function,layout,operation and military service when used for the treatment of the severe casualties in the tent-form field medical system,which contributes to enhancing the casualty treatment efficiency and prognosis.[Chinese Medi-cal Equipment Journal,2018,39(5):12-16]

Notch signaling pathway regulates osteosarcoma stem cell characteristics by inhibiting Eph pathway / 中华骨科杂志

Objective To investigate the role of Notch signaling pathway to maintain the stem cell-like characteristics of osteosarcoma and its underlying mechanism.Methods Lentiviral NICD1 or Numb-shRNA was transduced into MG63 osteosarcoma cells to activate Notch activity in vitro.The impact of Notch on osteosarcoma stem cells were assessed by the tumor sphere formation assay and flow cytometry analysis of cell surface markers STRO-1/CD117.The expression of stem cell related genes (Sox2,Oct4) were evaluated by Western blot and qPCR.The nude mice were randomly divided into 3 groups:the NICD1 overexpression (NICD-OE) group,the DAPT group and the control (CON) group.The tumor growth was monitored for 8 weeks and the tumor volume and weight were recorded weekly.To investigate whether Notch regulates Eph pathway,Eph pathway related protein EphB,pEphB was measured by Western blot.The impact of ephrinB 1 on NICD overexpression cell were assessed by tumor sphere formation assay.The expression of Sox2 and Oct4 was evaluated by Western blot.Results NICD1 overexpression or Numb-shRNA increased the activity of Notch pathway.The Notch-activated osteosarcoma showed enhanced in vitro tumor spheroid formation capacity,increased Stro-1/CD117double positive ratio,and upregulated expression of Sox2 and Oct4 in vitro.In animal experiments,it was found that activation of Notch pathway promoted tumor formation in vivo and Notch inhibition decreased it.The primary osteosarcoma cells were obtained from mice xenograft treated with DAPT and its tumor sphere formation capacity was significantly reduced.Finally,The Notch pathway inhibits the phosphorylation of EphB,as well as the downstream signal pathway of EphB,but there is no significant change in total EphB.The activation of Eph pathway inhibited Notch induced up-regulation of tumor sphere formation and Sox2 and Oct4 expression.Conclusion Notch signaling pathway maintains the stem cell-like characteristics of osteosarcoma probably by inhibiting the Eph pathway.

Clinical features and prognosis of 25 cases of soft tissue sarcoma with soft tissue me-tastasis / 中国肿瘤临床

Objective:To explore the outcome of soft tissue sarcoma (STS) on patients with soft tissue metastasis. Methods:We ana-lyzed 25 STS patients with soft tissue metastasis primarily localized on extremity and trunk. The study was conducted from June 2010 to June 2016 by retrospective analysis of the clinical and pathological characteristics of the patients. The assessed endpoints were overall survival. Results:Six patients (24%) had synchronous soft tissue metastasis, and 19 patients (76%) had metachronous metasta-sis. The average time for primary tumor recession of metastatic lesions was 45.3 months. Metastases were most common in parts of the trunk in 18 patients (72%), followed by the head and neck in 5 patients (20%). Eleven patients (44%) with lung metastasis had poor prognosis. Conclusion:STS occurred more rarely in soft tissue metastasis than in pulmonary metastasis. Neoadjuvant chemotherapy and surgical treatment were the major therapies employed. Targeted therapy as a new treatment rendered good results.

Advances in molecular targeted therapy for soft tissue sarcomas / 中国肿瘤临床

Sarcomas are tumors of mesenchymal origin that account for approximately 1%of human cancers. There are at least 60 dif-ferent subtypes of soft tissue sarcoma (STS). However, most tumor types are highly malignant tumors that lack an optimal therapeutic agent. Although gastrointestinal stromal tumor (GIST) responds well to imatinib, other types of STSs remain challenging because of their heterogeneous genetic and clinical features and poor prognosis. In recent years, the field of molecular targeted therapy has pro-gressed rapidly. Patients with advanced disease can receive individualized treatment to improve their quality of life. This review focus-es on the targeted therapies that have been evaluated for advanced non-GIST STS. Other promising novel therapeutic agents that are currently in the early phases of investigation are also presented.

Doxorubicin induces enrichment of stem-like cells in osteosarcoma by activating Notch signaling / 中国肿瘤临床

Objective:Cancer stem cells (CSCs) are resistant to chemotherapy. Our study aimed to investigate the stem cell-like proper-ties of doxorubicin-resistant osteosarcoma cell line 143B and its correlation with Notch signaling. Methods:We generated doxorubicin-resistant osteosarcoma cells by treating them with 2μm doxorubicin. Stem cell-like properties such as morphology change, Stro-1/CD117 double positive ratio, stem cell-related gene expression, sphere formation efficiency, and EMT character were assessed on day 5 after doxorubicin withdrawal. Notch receptor and its target genes were examined using qPCR and Western blot analysis. The stem cell-like properties of doxorubicin-resistant osteosarcoma cells were assessed when pretreated with Notch inhibitor or vehicle. The an-ti-tumor effect of Notch inhibitor was tested using a xenograft model. Results:Doxorubicin-resistant osteosarcoma cells were enriched in Stro-1+/CD117+cells, which showed obvious increased expression of stem cell-related genes, and exhibited enhanced spheroid for-mation and evident mesenchymal characteristics unlike doxorubicin-sensitive cells. qPCR and Western blot assays showed that Notch intracellular domain 1 (NICD1) and target genes Hes1 and Hey1 were upregulated in doxorubicin-resistant osteosarcoma stem cells compared with those in vehicle cells. Furthermore, pretreatment with a γ-secretase inhibitor (GSI) to prevent Notch signaling en-hanced chemo-sensitivity and inhibited doxorubicin-enriched osteosarcoma stem cell activity in vitro. Finally, the Notch inhibitor pre-vented tumor growth in mice xenograft models. Conclusion: Doxorubicin induced the enrichment of osteosarcoma stem-like cells through Notch signaling, and inactivation of Notch could be useful for overcoming drug resistance and eliminating osteosarcoma.

Impact of Anticoagulation on Deep Vein Thrombosis Occurrence in Patients After Right Heart Catheterization / 中国循环杂志

Objective: To explore deep vein thrombosis (DVT) occurrence in patients after right heart catheterization and the effect of anticoagulant therapy. Methods: A total of 171 consecutive patients with electrophysiological study (EPS) and/or radiofrequency catheter ablation (RFCA) in our hospital from 2015-01 to 2016-05 were enrolled. All patients had supra-ventricular tachycardia and completed a venous surgery, they were randomly divided into 2 groups: Anticoagulation group,n=87 and Non-anticoagulation group,n=84. Lower extremity vascular Doppler ultrasonography was performed at (24-48) h post-operation to compare the incidence of DVT between 2 groups. Results: There were 13/171 patients were excluded for not completing post-operative lower extremity vascular Doppler ultrasonography including 9 patients in Anticoagulation group and 4 in Non-anticoagulation group. 158 patients finished post-operative examination and follow-up study. Anticoagulation group had 7/78 (8.97%) patients suffered from DVT, Non-anticoagulation group had 41/80 (51.3%) patients suffered from DVT,P<0.001. Conclusion: The incidence of DVT was higher after right heart catheterization without anticoagulation; heparin treatment may reduce DVT occurrence in relevant patients.

Preliminary application of TREVO device in patients with acute ischemic stroke / 中国脑血管病杂志

Objective To preliminarily discuss the effect of thrombectomy with the TREVO device in patients with acute ischemic stroke.Methods Six patients with acute ischemic stroke treated with TREVO device at the Department of Neurointervention,Beijing Fengtai You′anmen Hospital from April to June 2016 were analyzed retrospectively,including 2 patients with middle cerebral artery (MCA)occlusion (time window from 2. 7 to 5. 5 h),4 with basilar artery occlusion (time window from 4. 0 to 7. 0 h). The effect of thrombectomy was evaluated by the modified thrombolysis in cerebral infarction (mTICI ) scores. The National Institutes of Health Stroke Scale (NIHSS)scores were used to evaluate the neurological status of patients before and after treatment. The prognosis was evaluated by the modified Rankin scale. Results (1 )After 1 to 2 embolectomies,the occlusive arteries of 5 patients achieved recanalization (mTICI gradeⅡb-Ⅲ;posterior circulation in 4 cases,MCA in 1 case). (2)Compared with at admission,the NIHSS score in 1 of 2 patients with MCA occlusion was reduced by 8 points at discharge,and 1 was not any improvement;compared with at admission,the NIHSS scores in 3 of 4 patients with basilar artery occlusion were decreased by 8-26 points at discharge,and 1 was not any improvement;in 2 patients with MCA occlusion,the modified Rankin scale scores were 0 to 1 at 3 months after discharge (0 in 1 case,4 in 1 case);the Rankin scale scores in 4 patients with basilar artery occlusion at 3 months after discharge were 0 in 1 case,1 in 2 cases,and 5 in 1 case.Conclusion The preliminary experience of using TREVO device embolectomy for patients with acute ischemic stroke shows that it is more safe and effective.

Blood Routine Analysis of Patients with Herpes Zoster at Early Stage,Acute Cholecystitis and Acute Myocardial Infarction / 现代检验医学杂志

Objective To evaluate the diagnostic value of these alternant indexes by compare the results of routine blood test of early herpes zoster(HZ),acute cholecystitis and acute myocardial infarction patients.Methods According to some inclu-sion and exclusion criteria,78 HZ patients,59 acute cholecystitis and 51 acute myocardial infarction patients from October 2013 to March 2017 were included.The receiver operator characteristics(ROC)were used to evaluate the diagnostic value of the blood corpuscle indexes.Results White blood cell count(WBC),blood platelet count(PLT)and neutrophilic granulo-cyte percentage(NE%)of HZ patients were lower than the acute cholecystitis and acute myocardial infarction patients(P<0.001).Lymphocyte percentage(LYM%)and monocyte percentage(MO%)were higher than the others'.The NE% index had a certain diagnostic value(AUC=0.848,95%CI:0.792~0.905).There was a highest specificity in LYM% index(spe-cificity=0.963).Conclusion There were some clinical significance of routine blood cell count results on the early HZ diag-nosis,which can reduce the missed diagnosis and misdiagnosis rate of an early diagnosis herpes zoster.

Microwave-assisted one-step rapid synthesis of near-infrared gold nanoclusters for NIRF/CT dual-modal bioimaging.

The development of ideal contrast agents was of great importance for multimodal imaging. However, the simple combination of different contrast components always needed long-time preparation and a tough reaction environment. In this study, we introduced a one-step microwave-assisted approach to synthesize lysozyme-capped gold nanoclusters (Lys-Au NCs) rapidly instead of traditional conditions. Irradiation with continuous microwave power shortened the reaction time from several hours to one hour and generated a large red shift (50 nm) of the fluorescence emission. The ultrasmall Lys-Au NCs showed excellent properties, including high quantum yield (19.61%), good stability, low cytotoxicity and good biocompatibility. This eco-friendly nanoprobe provided significant contrast signals in both NIRF (near-infrared fluorescence) and CT (X-ray computed tomography) in vivo imaging. Further conjugation with folic acid made the nanoprobe favorable for targeted fluorescence imaging of cancer cells and tumor-bearing mice.

Low-dose methotrexate combined with vinorelbine for inoperable desmoid tumor: efficacy and the prognostic factors / 南方医科大学学报

<p><b>OBJECTIVE</b>To characterize the clinical features of desmoid tumor, assess the efficacy of conservative chemotherapy for inoperable desmoid tumor and analyze the prognostic factors.</p><p><b>METHODS</b>From August 2009 to December 2013, 52 patients with inoperable desmoid tumor were treated in our department and received chemotherapy with vinorelbine combined with low-dose methotrexate. The clinical data of the patients were analyzed retrospectively.</p><p><b>RESULTS</b>The patients studied included 22 male and 30 female patients with the age of disease onset ranging from 2 to 46 years (mean 18.7 years). The lesions occurred most frequently in the lower limbs (36.5%, 19/52) and the tumor size ranged from 2.7 to 37 cm (mean 9.5 cm). The patients were followed up for a median of 29 months (7 to 64 months). The chemotherapy lasted for 4 to 30 months (median 12 months). After completion of the chemotherapy, 1 patient had a complete response (CR), 18 showed partial responses (PR), 27 cases had stable disease (SD), and 6 had progressive disease (PD), with an overall response rate (ORR) of 88.5%. The progression-free survival (PFS) time of the patients ranged from 4 to 63 months (median 26.5 months) with a 2-year PFS rate of 76.7% and 5-year PFS rate of 41.9%. A longer chemotherapy duration (over 12 months) was associated with a more favorable prognosis. No significant differences in PFS were found between the patients stratified by gender, age of disease onset, age when receiving chemotherapy, tumor site, or tumor size.</p><p><b>CONCLUSION</b>For recurrent, inoperable and progressive desmoid tumor, long enough cycles of vinorelbine combined with low-dose methotrexate can be an effective and safe option for tumor control.</p>

Study on experimental autoimmune encephalomyelitis with oxymatrine on rats model / 中国生化药物杂志

Objective To establish experimental autoimmune cerebral spinal cord inflammation ( EAE) model rats, and observe the pathological changes and effect of oxymatrine on EAE model.Methods 30 rats were randomly divided into control group,EAE ( model group) group and oxymatrine group.The EAE symptom score was used to evaluate the rats after the model, and to observe the changes of its behavior.By HE staining and Kluver &Barrera myelin dyeing to observe the inflammation of the brain and spinal cord demyelinating changes.Results The animals in control group had no change in behavior and pathological.In model group, all animals occured behavioral changes, accompanied by varying degrees of demyelination and inflammatory infiltration of the brain and spinal cord.In oxymatrine group,6 rats did not appear EAE clinical manifestations and behavioral change, and the myelin structure was intact.Conclusion Oxymatrine can extend the incubation period experimental autoimmune encephalomyelitis in rats of the disease, relieve symptoms and protect nerve.

Research on Safety of Hospital Traditional Chinese Medicine Preparations / 世界科学技术-中医药现代化

This study was aimed to provide a reference for the development, registration, and clinical use of hospital traditional Chinese medicine (TCM) preparations, in order to analyze and assess their safety and risk. It also provided a reference for the technical review and supervision of hospital TCM preparations. Through collecting review materials of hospital TCM preparations from 2012 to 2014 in the Sichuan Food and Drug Administration, 21 preparations developed by clinical experiences were screened out. Analysis was made on their ingredients, preparation process and acute toxicity data. The results showed that 98 kinds of Chinese herbal medicines were contained in 21 preparations. The dosages of herbs were in compliance with theChina Pharmacopoeia2010 Edition. Preparation processes of 16 preparations were made by water extraction, grinding and other traditional techniques. The preparation processes of the remaining 5 preparations were involved with alcohol extraction or alcohol precipitation. Acute toxicity test data were obtained with experimental data in mice. Clinical usages of preparation were much lower than MTD or LD50. It was concluded that these hospital TCM preparations developed by clinical experiences were with high safety.