The paper is aimed to establish a method of residue analysis for thiamethoxam and to study its degradation dynamic and final residue and its standard of safe application of thiamethoxam on Lonicera japonica. Samples extracted with methanol by ultrasonication were purified with dichloromethane by liquid-liquid extraction and SPE column and analysed by HPLC-UV. The results showed that average rate was 84.91%-94.44% and RSD 1.74%-4.96% with addition of thiamethoxam in respectively diverse concentration, which meets inspection requirement of pesticide residue. Two kinds of dosages of thiamethoxam were treated- varying from recommended dosage (90 g x hm(-2)) to high dosage (135 g x hm(-2)), Results of two years test showed that thiamethoxam was degraded more than 90% seven days after application and the half - life period of thiamethoxam was 1.54-1.66 d. The digestion rate of thiamethoxam was fast in the L. japonica. The recommended MRL of thiamethoxam in the L. japonica is 0.1 mg x kg(-1), the dosage of 25% thiamethoxam WDG from 90-135 g x hm(-2) is sprayed less than three times a year on L. japonica and 14 days is proposed for the safety interval of the last pesticide application's and harvest's date.
Agriculture ; methods ; standards ; Chromatography, High Pressure Liquid ; Flowers ; chemistry ; growth & development ; parasitology ; Half-Life ; Insect Control ; methods ; standards ; Insecticides ; adverse effects ; chemistry ; Lonicera ; chemistry ; growth & development ; parasitology ; Neonicotinoids ; Nitro Compounds ; adverse effects ; chemistry ; Oxazines ; adverse effects ; chemistry ; Pesticide Residues ; adverse effects ; chemistry ; Plant Diseases ; parasitology ; prevention & control ; Thiazoles ; adverse effects ; chemistry

With more and more attention and investment on acupuncture scientific researches, considerable outcomes and achievements has been acquired, but the shortcoming of low transformation rate of acupuncture research achievements is gradually exposed. Nowadays there is no related report on this problem, so based on achievement translational research in other areas and practical situation of acupuncture, the existing problems and solutions are analyzed. As a result, the existing problems include (1) the research content is mainly basic research and clinical research but less acupuncture device research, leading to limited transformation efficiency; (2) the evaluation system and transformation pattern are still needed to be perfect. The solutions are (1) to properly evaluate the research achievements of acupuncture, (2) to advocate the concept and method of translational medicine, (3) to reform the policy and system, and (4) to establish valid platforms covering research, outcomes and transformation.
Acupuncture ; economics ; legislation & jurisprudence ; manpower ; Biomedical Research ; Biotechnology ; economics ; legislation & jurisprudence ; manpower ; China ; Humans ; Technology Transfer

Objective To study the lysozyme activity in Oncomelania hupensis and observe its inhibitory effect on bacterial growth.Methods Soft tissues of Oncomelania hupensis were initially homogenized and immersed in Tris-HCl-TritonX-114 buffer solution for 24 hours then the supernatant was collected after centrifugation at 10 000 × g for 10 minutes.The supernatant was incubated in a 37 ℃ water bath for 15 minutes and centrifuged again at 2000 × g for 10 minutes.The precipitate was put into ultrafiltration tube (relative retention molecular mass =3000) and centrifuged at 4 ℃,5 000 × g for 30 minute to obtain concentrated enzyme.The protein content,lysozyme activity and the antibacterial effect on Micrococcus lysodeikticus,Shigella dysenteriae,Staphylococcus aureus,Escherichia coli and Candida albicans were measured with bicinchonininc acid(BCA) method,turbidimetric method and agar diffusion (K-B) method,respectively.Results The antibacterial protein lysozyme was identified in gastropod protein concentration of the concentrated enzyme was 3.428 g/L.Average activity,total activity,and specific activity were (760 ± 120) × 103 U/L,(1520 ± 240) × 103 U/L and (221.70 ± 35.00)U/mg,respectively.The enzyme had produced exclusive inhibitory effects on growth of Micrococcus lysodeikticus and Shigella dysenteriae.Average inhibitory diameters were 10-12 and 12-15 mm,respectively.No inhibition zone was observed in saline control,Staphylococcus aureus,Escherichia coli and Candida albicans.Conclusions Lysozyme can be extracted from soft tissues of Oncomelania hupensis with Tris-HCl-TritonX-114 buffer solution,and the enzyme has inhibitory effect on growth of Micrococcus lysodeikticus and Shigella dysenteriae but has no antibacterial effect on Staphylococcus aureus,Escherichia coli and Candida albicans.

In order to ensure the superior quality and safety of the raw materials of the Chinese herbal medicine, a standard operating procedure for astragalus was established on the base of the GAP of the Chinese herbal medicine as well as practice investigation and experiments. This standard operating procedure provides the technical requirements for astragalus's growing, field management, controlling of the diseases and pests, harvesting, processing, packing, storing, transporting and quality monitoring.
Astragalus membranaceus ; growth & development ; Drug Packaging ; Drug Storage ; Pest Control ; Pesticide Residues ; Plant Diseases ; Plant Roots ; growth & development ; Plants, Medicinal ; growth & development ; Quality Control ; Soil ; Technology, Pharmaceutical ; standards

From the perspective of standardization development of Traditional Chinese Medicine (TCM) information,the paper puts forward the categorizing and coding scheme of clinical TCM information,builds a frame of basic clinical TCM information classification,which consists of 6 Grade 1 categories,30 subcategories and a few detailed categories,to provide standardized support for informatization and standardization study in the area of TCM.

OBJECTIVETo evaluate the value of three-phase pulmonary helical CT in diagnosing peripheral pulmonary cancer (diameter

METHODSSerial single-slice dynamic scans were obtained with helical CT before and after injection of 100 ml contrast material in 60 patients with solitary pulmonary nodules (SPNs, diameter

RESULTSThe delayed times of three-phase pulmonary helical CT were pulmonary artery phase (15 second), bronchial artery phase (36 second), equilibrium phase (90 second) respectively. The prevalence model of density change for three-phase pulmonary helical CT: no enhancement, marked enhancement, moderate-enhancement in pulmonary cancer; slight or moderate-enhancement, marked-enhancement, marked-enhancement in inflammatory nodules; no enhancement or light-enhancement in tuberculoma and metastatic nodules. The enhanced branch and small spot vessels were demonstrated by bronchial artery phase in 82.9% of pulmonary cancer nodules.

CONCLUSIONThe three-phase pulmonary helical CT could reflect the enhancement feature, blood supply of bronchial artery in peripheral pulmonary cancer (diameter
Adult ; Aged ; Aged, 80 and over ; Aorta, Thoracic ; diagnostic imaging ; Diagnosis, Differential ; Female ; Humans ; Lung Neoplasms ; blood supply ; diagnostic imaging ; Male ; Middle Aged ; Pulmonary Artery ; diagnostic imaging ; Radiographic Image Enhancement ; Solitary Pulmonary Nodule ; blood supply ; diagnostic imaging ; Tomography, Spiral Computed ; methods

OBJECTIVETo investigate the efficacy and toxicity of neoadjuvant chemotherapy with paclitaxel and carboplatin or cisplatin for patients with locally advanced cervical cancer.

METHODSA total of 70 patients with locally advanced cervical cancer were treated with neoadjuvant chemotherapy with paclitaxel and carboplatin or cisplatin in our department from July 2007 to May 2010. The stage distribution among the patients included 45 stage IB2, 21 stage IIa, and 4 stage IIb. Of the 70 patients, 6 were G1, 26 were G2, 32 were G3, and the rest 6 patients were not histologically classified. Sixty-five patients had squamous cell carcinoma, 3 had adenocarcinoma, and 2 patients had adenosquamous cell carcinoma. The clinicopathological parameters were analyzed, and their impact on tumor response were investigated.

RESULTSOf the 70 patients, 14 (20.0%) showed a complete response, 37 (52.9%) had a partial response to chemotherapy, making an overall response rate of 72.9%. Sixty-eight (95.7%) patients underwent surgery, and among them 12 (17.1%) pathological CR were identified. Eleven (16.2%) patients were found to have lymph node metastasis after surgery. Response rates of stage Ib2 and IIa patients were 73.7% and 52.3%, respectively, P<0.05. Patients with SCC exhibited a better response rate than patients with adenocarcinoma and adenosquamous cell carcinoma (73.8% vs. 60.0%). Initial tumor volume, histological classification and cycles of neoadjuvant chemotherapy were not significantly correlated with the response rate.

CONCLUSIONPaclitaxel and carboplatin or cisplatin regimen is a promising therapy with definite short-term efficacy, can improve the resection rate with tolerable side effects, and is an applicable option of treatment for patients with locally advanced cervical cancer in the neoadjuvant setting.

Adenocarcinoma ; drug therapy ; immunology ; pathology ; surgery ; Adult ; Antigens, Neoplasm ; metabolism ; Antineoplastic Combined Chemotherapy Protocols ; therapeutic use ; Carboplatin ; administration & dosage ; Carcinoma, Adenosquamous ; drug therapy ; immunology ; pathology ; surgery ; Carcinoma, Squamous Cell ; drug therapy ; immunology ; pathology ; surgery ; Chemotherapy, Adjuvant ; Cisplatin ; administration & dosage ; Female ; Follow-Up Studies ; Humans ; Hysterectomy ; methods ; Lymphatic Metastasis ; Middle Aged ; Neoadjuvant Therapy ; Neoplasm Staging ; Paclitaxel ; administration & dosage ; Remission Induction ; Serpins ; metabolism ; Uterine Cervical Neoplasms ; drug therapy ; immunology ; pathology ; surgery

Objective To study the epidemic tendency of emerging influenza A (H1N1) in mainland China, and to explore the different patterns of spread on the disease under the following contexts: (1) To stop the temperature screening program at the border areas of the country; (2)To stop measures of prevention and control on those identified cases and their close contacts; (3) To strengthen programs for the foreign immigrants on 'home quarantine'. Methods Under relevant parameters and information on the transmission link from different reference data, the patterns of influenza spread were simulated by Monte Carlo method. Results The temperature screening on border could inhibit the transmission of influenza A (H1N1) to some extent, so that after 3 months the cumulative number of cases will be reduced by 21.5% (1718 cases) and transmission speed of influenza A (H1N1) in mainland China will be delayed by about 4 days. Furthermore, taking positive measures of prevention and control could efficiently slow down the epidemic, so that after 3 months the cumulative number of cases will be reduced by 93.4%(about 90 thousand cases) and it would be delayed by about 15 days if influenza A (H1N1) spreads to the whole country. In addition, if the immigrants were able to practise quarantine measures consciously by themselves at home the effect of prevention and control against influenza A(H1N1) would be more significant. If 30%, 60% and 90% of immigrants would take quarantine measures home consciously, after 3 months the cumulative number of cases will be reduced by about 15% (about 940 cases), 34% (about 2230 cases) and 64% (about 4180 cases), respectively. Also, influenza A (H1N1) spreads to the whole country will be delayed by about 4 days, 10 days and 25 days, respectively. It is difficult to curb fully the development of the epidemic by taking existing control measures, and influenza A (H1N1) may spread to almost all provinces after about 3 months. Conclusion The effects of existing prevention and control measures were objectively assessed and the results showed the necessity and effectiveness of these measures against the transmission of influenza A (H1N1) , in the mainland of China.

OBJECTIVETo evaluate the clinical value of radial endorectal ultrasound (ERUS) in the assessment of preoperative staging of rectal carcinoma.

METHODSOne hundred and ten patients with rectal cancer underwent preoperative endorectal ultrasound (ERUS) examination in our hospital from February 2010 to September 2011. ERUS was performed using a Hitachi 900, Hitachi HI Vision Preirus US scanner, with a 5 - 10 MHz rigid rotating radial transducer and a focal length of 2 - 5 cm. The size, shape, echo pattern, infiltration depth, degree of circumferential involvement, extra-rectal invasion of the lesions and lymph node involvement were observed. The results of ERUS staging were compared with histopathological findings of the surgical specimens.

RESULTSThe accuracy of ERUS for T staging was 91.4%. The accuracy of ERUS in diagnosing stage T1, T2, T3, T4 cancers was 92.7%, 88.2%, 88.2% and 96.4%, respectively. The sensitivity of ERUS in diagnosing stage T1, T2, T3, T4 cancers was 92.3%, 72.7%, 85.4% and 71.4%, respectively. The specificity of ERUS in diagnosing stage T1, T2, T3, T4 cancer was 92.9%, 92.0%, 90.3% and 100.0%, respectively. Comparing the consistency of preoperative T-staging and postoperative pathological results, the Kappa value was 0.75, with a considerable consistency. The sensitivity, specificity, and accuracy of ERUS in the assessment of lymph node metastasis were 74.2%, 89.9% and 85.5%, respectively. Comparing the consistency of preoperative N-staging and postoperative pathological results, the Kappa value was 0.64, with a considerable consistency.

CONCLUSIONSERUS is a practical and accurate tool in assessment of preoperative staging of rectal tumors in regard to tumor invasion depth (T) and regional lymph node status (N), with advantages of simple operation, less pain, and high accuracy.

Adult ; Aged ; Endosonography ; methods ; Female ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Staging ; Preoperative Period ; Rectal Neoplasms ; diagnostic imaging ; pathology ; surgery ; Rectum ; diagnostic imaging ; pathology ; surgery

OBJECTIVETo compare plasma concentrations of biomarkers of endothelial dysfunction between patients with primary aldosteronism (PA) and essential hypertension (EH), and to determine whether elevated levels of these biomarkers could predict development of early organ damage.

METHODSThirty-six PA patients and 39 EH patients matched for age, sex, blood pressure and duration of hypertension were included in this study. Plasma levels of biomarkers reflecting endothelial dysfunction (von Willebrand factor, vWF; soluble intercellular adhesion molecule 1, sICAM-1; and oxidized low density lipoprotein, ox-LDL) were detected and compared between PA and EH patients. Left ventricular mass index (LVMI) determined by echocardiography, 24-hour urinary protein quantitative determination and urinary albumin excretion rate (UAER) were analyzed to evaluate early organ damage. Left ventricular hypertrophy was defined as LVMI > 125 g/m(2) in men and > 120 g/m(2) in women, and UAER between 20 µg/min and 200 µg/min was defined as microalbuminuria.

RESULTSvWF [(122.3 ± 53.8)% vs. (113.1 ± 68.3)%], sICAM-1 [(401.0 ± 74.1) µg/L vs. (300.9 ± 87.0) µg/L], ox-LDL [(13.6 ± 10.0) U/L vs. (8.1 ± 5.9) U/L], LVMI [(124.7 ± 33.6) g/m(2) vs. (109.1 ± 25.7) g/m(2)], 24-hour urinary protein quantitation [24 h UPQ, (0.17 ± 0.10) g vs. (0.09 ± 0.04) g] and UAER [(25.9 ± 7.7) µg/min vs. (9.7 ± 5.9) µg/min] were significantly higher in PA group than in EH group (all P < 0.05). Elevated plasma vWF, sICAM-1 levels and plasma aldosterone concentration independently predicted microalbuminuria. Whereas, elevated plasma vWF and ox-LDL levels, plasma aldosterone concentration and systolic blood pressure independently predicted left ventricular hypertrophy.

CONCLUSIONPatients with PA have severer endothelial dysfunction reflected by multiple biomarkers and earlier organ damage than patients with EH, and plasma aldosterone concentration and multiple endothelial dysfunction biomarkers could independently predict early organ damage.

Albuminuria ; Biomarkers ; metabolism ; Female ; Humans ; Hyperaldosteronism ; metabolism ; pathology ; physiopathology ; Hypertension ; metabolism ; pathology ; physiopathology ; Lipoproteins, LDL ; blood ; Male ; Middle Aged ; von Willebrand Factor ; metabolism