The effective guarantee of the supply of low-price medicine in common use is of great significance for the protection of public health, the safeguard of social equality and the smooth progress of new healthcare reform. On the basis of the governance tools theory, the paper focuses on an analysis of approaches to combine and optimize the diverse utilization of governance tools in order to integrate the means of supply of the low-price medicine in com-mon use. In other words, the paper utilizes the ‘Voluntary-Directive-Mixed’ governance tools framework to provide possible solutions for the supply of low-price medicine in common use, namely, the locations of the voluntary tools ( household and community, volunteers, and market) , the directive tools ( government command-control regulation, establishment of public enterprises, and direct provision) , and the mixed tools ( information disclosure and advice, subsidies, auctions of property rights, tax and user charge) . Lastly the paper proposes specific policy suggestions in four aspects to confirm the total strategy of guaranteeing the supply of low-price medicine in common use:clever use of price leverage, improvements to procurement methods, establishment of an information disclosure system for medi-cine price, and a confirmation of government subsidies and industrial policy strategies.

OBJECTIVE:To establish a method for the content determination of geniposide in TCM callus convenient wipes drug solution. METHODS:HPLC was performed on the column of Agilent Zorbax SB-C18 with mobile phase of acetonitrile-0.1%phosphoric(10:90,V/V)at the flow rate of 1.0 ml/min,column temperature was 30 ℃,detection wavelength was 236 nm and the volume was 10 μl. RESULTS:The linear range of geniposide was 0.104 1-1.041 μg (r=0.999 8);RSDs of precision,stability and reproducibility tests were all lower than 2%;recovery was 99.04%-100.82%(RSD=0.85%,n=6). CONCLUSIONS:The method is simple,accurate,reproducible,and can be used for the content determination of geniposide in TCM callus convenient wipes drug solution.

Objective:To investigate the clinical efficacy of ultrasound-guided percutaneous radiofrequency ablation in the treatment of ectopic pregnancy.Methods:A retrospective analysis was performed on 8 patients with ectopic pregnancy admitted to the First Affiliated Hospital of Zhengzhou University from January 2018 to January 2020, all of whom underwent ultrasound-guided percutaneous radiofrequency ablation. Contrast ultrasonography was performed immediately after the operation to observe the changes of pregnancy sac. The length of hospital stay, mass absorption time and menstrual recovery time of the patients were recorded. Postoperative complications and serum human chorionic gonadotropin (HCG) negative conversion time were observed. At 3 months after the operation, hysterosalpingography was performed 3-7 days after the menstruation to observe the patency of the fallopian tubes, all patients were followed up for 1 year to observe the postoperative intrauterine pregnancy and re-ectopic pregnancy.Results:All the 8 patients were successfully treated with radiofrequency ablation, and postoperative ultrasonography showed that the mass remained unenhanced. The length of hospital stay was (3.0±0.8)d. The packet absorption time was (32.4±14.3)d. The recovery time of menstruation was (39.6±2.7)d. There were no serious complications.Blood HCG levels decreased rapidly within a week, and all returned to normal level of non-pregnancy 2-3 weeks after the operation. Three months after the operation, the salpingogram showed that the fallopian tubes were recanalized in 3 patients. After a follow-up of 1 year, 1 patient had a natural intrauterine pregnancy, and there was no case of recurrent ectopic pregnancy.Conclusions:Ultrasound-guided percutaneous radiofrequency ablation is effective in the treatment of ectopic pregnancy with minimal trauma and rapid recovery, and can retain the reproductive ability of patients to some extent, which is worth popularizing in clinical application.

Objective:To study the safety and efficacy of ultrasound-guided radiofrequency ablation in treatment of gallbladder polyps.Methods:The clinical data of 13 patients who underwent ultrasound-guided radiofrequency ablation for gallbladder polyps at the First Affiliated Hospital of Zhengzhou University from April 2019 to March 2020 were retrospectively analyzed. These were 8 males and 5 females, with ages ranging from 20 to 49 years. The incidence of adverse reactions and complications after treatment, the complete ablation rate of polyps and the absorption of postoperative lesions were studied, and the gallbladder systolic function of patients before and after treatment were compared.Results:Of 13 patients, surgery was successfully carried out and there was no serious complications of gallbladder perforation, bleeding and collateral organ injury. The median radiofrequency ablation time was 30 s, and the complete ablation rate was 100.0%(13/13). After 6 months of follow-up, the rate of reduction of lesion volume was 100.0(98.0, 100.0)% at 6 months after surgery, which was significantly higher than the rates of 46.0(40.0, 54.0)%, 72(64.0, 100.0)% and 87.0(81.0±100.0)% at 1, 2 and 3 months after surgery ( P<0.05). The gallbladder contractility rate at 3 months after operation was (78.38±10.83)% compared with that before operation (77.46±11.28)%, and there was no significant difference ( P>0.05). Conclusion:Ultrasound-guided radiofrequency ablation for gallbladder polyps was safe. It had a significant short-term efficacy for treatment of gallbladder polyps.

ObjectiveTo investigate the difference in the outcomes in patients with acute anterior circulation stroke having achieved the Thrombolysis in Cerebral Infarction (TICI) 2b and TICI 3 recanalization after mechanical thrombectomy.MethodsThe patients with acute anterior circulation stroke having achieved successful recanalization after mechanical thrombectomy were enrolled retrospectively.They were divided into TICI 2b (almost complete recanalization) group and TICI 3 (complete recanalization) group.The good outcome was defined as the modified Rankin Scale score 0-2 at 3 months after onset.ResultsA total of 83 patients were enrolled in the study, including 38 patients (45.8%) with TICI 2b and 45 (54.2%) with TICI 3;49 (59.0%) had good outcome, and 34 (40.9%) had poor outcome.The good outcome rate in the TICI 3 group was significantly higher than that in the TICI 2b group (68.9% vs.47.4%;χ2=3.946, P=0.047).After adjusting for age, hypertension, diabetes, baseline systolic blood pressure, triglyceride, intravenous thrombolysis, and ASITN/SIR collateral grades, TICI 3 was an independent predictor for good outcome at 3 months after onset (odds ratio [OR] 3.759, 95% confidence interval [CI] 1.098-12.871;P=0.035), while the higher baseline National Institutes of Health Stroke Scale score (OR 0.820, 95% CI 0.715-0.941;P=0.005) and higher fasting glucose (OR 0.610, 95% CI 0.410-0.906;P=0.014) were the independent predictors for poor outcome at 3 months after onset.ConclusionsThere are difference in the outcomes in patients with successful recanalization in anterior circulation stroke treated with mechanical thrombectomy.The outcome is substantially better in TICI 3 than TICI 2b patients.

Objective To compare the efficacies of 4 risk models (THRIVE[Totaled Health Risks in Vascular Events],MSS[Multicenter Stroke Survey],HIAT[Houston Intra-Arterial Therapy],and GRASPS[Glucose at presentation,Race,Age,Sex,Systolic blood pressure,Severity of stroke at presentation]) in predicting intracranial hemorrhage and poor outcomes in acute anterior circulation ischemic stroke after mechanical thrombectomy.Methods From May 2013 to March 2016,153 consecutive patients with acute anterior circulation vascular occlusion conducted mechanical thrombectomy within 6 hours after onset and admitted to the Departments of Neurology,Jinling Hospital,Nanjing University School of Medicine and Zhongshan Hospital,Xiamen University were enrolled prospectively.Logistic regression analysis and the area under the receiver operating characteristic (ROC) curve (AUC) were used to investigate the efficacies of 4 risk models (the THRIVE,MSS,HIAT,and GRASPS scores) for predicting intracerebral hemorrhage (including any intracranial hemorrhage events and symptomatic intracranial hemorrhage) and poor outcomes (including 90 d all-cause death and modified Rankin Scale[mRS] score≥3) in acute anterior circulation ischemic stroke after mechanical thrombectomy.Results The MSS score (AUC 0.639,95%CI 0.548-0.730,P=0.004) and GRASPS score (AUC 0.616,95%CI 0.525-0.706,P=0.017) could predict any intracranial hemorrhage events,but the predictive accuracy was low.They had the predictive value for death within 90 d after mechanical thrombectomy,and the GRASPS score (AUC 0.783,95%CI 0.706-0.860,P<0.001) had the moderate predictive accuracy,and the AUC of the other 3 models was all<0.7,the predictive accuracy was low.The models could predict the poor prognosis at 90 d (90 d mRS≥3).The AUCs of both the GRASPS score and THRIVE score were >0.7.The AUC of GRASPS score was the largest (AUC 0.782,95%CI 0.708-0.885,P<0.01).Both had moderate predictive accuracy.Conclusion The GRASPS score had a better clinical predictive value for all-cause death and poor prognosis within 90 d after mechanical thrombectomy.The THRIVE score had a better clinical predictive value for poor prognosis at 90 d.The 4 models predictive value for intracranial hemorrhage events after mechanical thrombectomy should be further examined.

Biased signaling or functional selectivity refers to the ability of an agonist or receptor to selectively activate a subset of transducers such as G protein and arrestin in the case of G protein-coupled receptors (GPCRs). Although signaling through arrestin has been reported from various GPCRs, only a few studies have examined side-by-side how it differs from signaling via G protein. In this study, two signaling pathways were compared using dopamine D2 receptor (D2R) mutants engineered via the evolutionary tracer method to selectively transduce signals through G protein or arrestin (D2G and D 2Arr, respectively). D2G mediated the inhibition of cAMP production and ERK activation in the cytoplasm. D2Arr, in contrast, mediated receptor endocytosis accompanied by arrestin ubiquitination and ERK activation in the nucleus as well as in the cytoplasm. D2Arr-mediated ERK activation occurred in a manner dependent on arrestin3 but not arrestin2, accompanied by the nuclear translocation of arrestin3 via importin1. D2R-mediated ERK activation, which occurred in both the cytosol and nucleus, was limited to the cytosol when cellular arrestin3 was depleted. This finding supports the results obtained with D2Arr and D2G. Taken together, these observations indicate that biased signal transduction pathways activate distinct downstream mechanisms and that the subcellular regions in which they occur could be different when the same effectors are involved. These findings broaden our understanding on the relation between biased receptors and the corresponding downstream signaling, which is critical for elucidating the functional roles of biased pathways.

OBJECTIVETo study the regulation trend of resveratrol on TNF-alpha, IL-1beta, IL-6 expressions in bronchoalveolar layage fluid (BALF) of RSV-infected BALB/c mice at different time points.

METHODRSV-induced BALB/c mice were orally administered with resveratrol. Their BALFs were collected at 24, 72 and 144 h after the first nasal drip with RSV to detect the level of TNF-alpha, IL-1P3, IL-6 by EILSA.

RESULTThe expression of TNF-alpha, IL-1Pf and IL-6 in BALF increased significantly compared with the normal group (P <0. 01) after 24 hours of RSV infection, while the expression of TNF-alpha (P < 0.01), IL-1beta (P < 0.05), IL-6 (P < 0.01) in the resveratrol group decreased notably compared with the model group. After 72 hours of infection with RSV, although the expression of TNF-alpha (P < 0.05), IL-1beta (P < 0.01) and IL-6 (P < 0.01) in BALF in model group were higher than those in the normal group, they were much more lower than at 24 h. The expression of IL-1beta and IL-6 (P < 0.05) in the resveratrol groups were down-regulated significantly, but no difference had been shown in TNF-alpha expression compared with the RSV infection group. After infection with RSV for 144 h, the expression of IL-1beta (P < 0.01) and IL-6 (P < 0.05) in BALF in the model group were higher than those in the normal group, but there was no difference in the secretion of TNF-alpha. The expression of TNF-alpha, IL-1beta and IL-6 showed also no remarkable difference between the resveratrol groups and the RSV infection group.

CONCLUSIONResveratrol can inhibit the over expression of inflammatory factors TNF-alpha, IL-1beta, IL-6 in bronchoalveolar lavage fluid of RSV-induced BALB/c mice and keep them at a low level with the passing of infection time.

Animals ; Bronchoalveolar Lavage Fluid ; immunology ; Female ; Interleukin-1beta ; analysis ; Interleukin-6 ; analysis ; Mice ; Mice, Inbred BALB C ; Respiratory Syncytial Virus Infections ; drug therapy ; immunology ; Stilbenes ; pharmacology ; therapeutic use ; Tumor Necrosis Factor-alpha ; analysis

OBJECTIVETo screen novel miRNAs targeting EZH2 3' untranslated region (UTR) in recombinational MCF-7 breast cancer cells over-expressing EZH2 3' UTR and quantitative analyze the expressions of the screened miRNA in breast cancer cells and tissues.

METHODSA lentiviral library was transfected into the recombinant cell line MCF-7. The cells were screened with cytotoxic agents before extraction of the genome for amplification of the miRNA precursors using PCR. The screened miRNAs were identified with sequence analysis and their expressions were analyzed quantitatively with real-time PCR in breast cancer cells and tissues.

RESULTSSeven miRNAs were screened from the recombinant MCF-7 cells, namely miR-15b, miR-16-2, miR-181b2, miR-217, miR-224, miR-329-1, and miR-487b, all of which failed to be predicted by bioinformatics software. Real-time PCR showed that miR-217, miR-329-1, and miR-487b were over-expressed in MCF-7 cells, and the expression of miR-15b and miR-16-2 was significantly increased in cancer tissues compared with the adjacent tissues (P<0.05).

CONCLUSIONNovel targeted miRNAs that can not be predicted by bioinformatics software were successfully screened from MCF-7 breast cancer cells over-expressing EZH2 3' UTR. These miRNAs are expressed differentially between normal breast cells and breast cancer tissues.

3' Untranslated Regions ; Breast Neoplasms ; genetics ; Cell Line, Tumor ; Enhancer of Zeste Homolog 2 Protein ; Female ; Gene Expression Profiling ; Humans ; Lentivirus ; genetics ; MicroRNAs ; genetics ; Polycomb Repressive Complex 2 ; genetics

Objective: To assess the role of the arterial based complexity (ABC) scoring system in predicting clinically relevant outcomes of minimally invasive partial nephrectomy (MIPN). Methods: A retrospective review of 161 renal cell carcinoma patients who under-went MIPN at Tianjin Medical University Cancer Institute and Hospital from June 2016 to January 2018 was performed. The ABC score, including grades 1, 2, 3S, and 3H, were based on the patients'enhanced preoperative abdominal CT images. The reproducibility of the ABC scoring system was evaluated, and the relationship between the ABC score and patients'pathological features, surgery-related variables, postoperative complications, and renal function was analyzed. Results: Patients in grades 1, 2, 3S, and 3H in this study ac-counted for 20.5% (33/161), 60.2% (97/161), 11.8% (19/161), and 7.5% (12/161), respectively. The average Kappa value of the physi-cian's score was 0.523, and the average exact match percentage was 70.2%. The ABC score was significantly associated with operative time, warm ischemia time (WIT), estimated blood loss (EBL), and tumor size (P<0.001 for all) and was not associated with postopera-tive hospital stay, postoperative complications, preoperative estimated glomerular filtration rate (eGFR), and eGFR at 3 and 6 months postoperatively (P>0.05 for both). Conclusions: The ABC score is a scoring system with good repeatability and has certain predictive significance for the complexity of MIPN. However, further research is needed for its clinical application.