With Chira's proposal of building an innovative country and implementing national intellectual property strategy,the rapid development of intellectual property,reward system of science and technology had a profound effect.This article made preliminary discussion from the level of scientific and technological achievements,the evaluation system and the types of science and technology rewards.

Objective To investigate the influence of spleen aminopeptidase lyophilized powder on serum levels of transforming growth factor -β1 (TGF -β1),monocyte chemoattractant protein -1 (MCP -1),stromal cell derived factor 1 (SDF -1 )in pediatric asthma.Methods 128 patients with asthma were randomly divided into observation group(64 cases)and control group (64 cases).Two groups of children were given symptomatic treat-ment.The control group was orally administered montelukast,the observation group was treated with montelukast and splenic ammonia lyophilized powder for 3 months.The levels of TGF -β1,MCP -1,SDF -1 of the two groups were compared before and after treatment.Results After treatment,the asthma control test table (ACT)score,expiratoryvolume in one second (FEV1 )and peak expiratory flow rate (PEF)in the observation group were (24.25 ± 3.98)points (80.25 ±4.25)%,(7.25 ±0.69)L/min,which were significantly higher than those in the control group [(20.12 ±4.02)points,(75.02 ±3.96)%,(5.82 ±0.70)L/min,t =7.203,6.757,14.459,26.677,P <0.01].After treatment,the serum levels of TGF -β1,MCP -1,SDF -1 of the observation group were (42.23 ± 6.02)ng/mL,(48.56 ±3.96)pg/mL,(252.36 ±32.22)ng/L,which were significantly lower than those in the con-trol group [(42.23 ±6.02)ng/mL,(59.02 ±4.22)pg/mL,(425.25 ±40.62)ng/L,t =6.757,14.459,26.677,all P <0.01].Conclusion Montelukast combined with splenic aminopeptidase lyophilized powder for asthma can effec-tively reduce serum TGF -β1,MCP -1,SDF -1 levels and improve clinical symptoms and lung function,improve the treatment of children.

Abstract: Objective To investigate the research hotspots of occupational exposure in healthcare workers at home and abroad Methods in the past decade and future research trends. Based on the Web of Science platform, independent retrievals were performed by two researcher. The number, core authors, keywords, and other contents of articles were analyzed using CiteSpace Results 5.6.R2. A total of 1 066 references on occupational exposure among healthcare workers from 2010 to 2019 were retrieved. These articles were mainly from the United States, Italy, France, Germany, Brazil, England, and China, with 272, 71, 56, 52 and 52 articles, respectively. One hundred and eight core authors, who mainly came from the United States and Korea, contributed 418 papers (39.2%). Current hotspots included human immune deficiency virus (HIV), workplace violence, hand eczema, fluoroscopy, antineoplastic drugs, nervous system, nitrous oxide, assessment, standard precautions, and personal protective equipment. Topics such as percutaneous injury, tuberculosis, guideline, HIV, and burnout are future research trends. Conclusions There is a need to strengthen international cooperation. It´s encouraged to develop guidelines on occupational - exposure protection and to prevent long term chronic occupational exposure, such as antineoplastic drug exposure.

This article statistically analyzes and discusses the problems in national supervision sampling of vertical mode steam sterilizers in 2014. For improving product quality, strengthening the supervision and management, it provides a reference.
Steam ; Sterilization ; methods ; standards

Vulnerable plaque (VP) has been widely considered as the main cause of acute coronary syndrome (ACS) and cardiac death .In recent years ,invasive or non-invasive intravascular ultrasound imaging has become one of main measures for detecting VP .The present article made following overview on advantages and disadvantages of intravascular ultrasound imaging assessing VP .

BACKGROUND:The use of neural stem cels provides a new approach for nervous system functional reconstruction and nerve regeneration. How to solve the induced differentiation of neural stem cels is stil a research hotspot.
OBJECTIVE:To investigate the differentiation of rat neural stem cels into neurons and dopaminergic neurons under induction of glial cel-line derived neurotrophic factor gene.
METHODS:PcDNA3-GDNF-GFP plasmids were constructed and transferredvia lipidosome into rat embryonic neural stem cels. Differentiation of neural stem cels after transfection was identified under a fluorescence microscope. Immunofluorescent staining was used to detect expression of β-tubulin III and tyrosine hydroxylase.
RESULTS AND CONCLUSION:At 3 days after transfection, green fluorescence was observed in the transfected cels that were globular. At 7 days after transfection, the proportion of neural stem cels differentiating into neurons and dopaminergic neurons were significantly increased. These results indicate that the glial cel-line derived neurotrophic factor gene can induce the differentiation of neural stem cels into neurons and dopaminergic neurons.

AIM:To investigate the levels and clinical significance of microRNA-133a/b (miR-133a/b) and multidrug resistance-associated protein 1 ( MRP1 ) in peripheral blood of the patients with drug-refractory epilepsy. METHODS:Prediction of the miRNAs targeting transcriptional regulation of MRP1 was conducted by bioinformatics analy-sis.The plasmids containing wild type and mutant 3’UTR of MRP1 reporter gene were constructed.Dual luciferase report-er gene assay was used to verify this prediction.In addition, the peripheral blood samples of the epilepsy patients (37 cases were drug-refractory, the other 58 cases were nonresistant) were collected.The levels of miR-133a/b and MRP1 were measured by real-time PCR and ELISA.RESULTS:Through TargetScan database, it was predicted that miR-133a/b tran-scriptionally regulated MRP1.The results of dual luciferase report gene assay suggested that luciferase activity in experi-mental group with miR-133a/b mimics, pMIR-MRP1 and pRLTK plasmids were down-regulated by 76.9% and 64.1%compared with that in control group with scramble mimic, pMIR-MRP1 and pRLTK plasmids.The luciferase activity was up-regulated by 3.62 times and 2.04 times in mutation group with miR-133a/b mimics, pMIR-mut-MRP1 and pRLTK plasmids compared with experimental group.Before administration, the serum levels of miR-133a/b in the epilepsy patients without drug resistance was 2.18 times and 1.74 times higher than than in the epilepsy patients with drug resistance ( P<0.05), respectively, while MRP1 expression level was 3.72 times higher in the epilepsy patients with drug resistance than those in the epilepsy patients without drug resistance.After administration, the levels of miR-133a/b in the epilepsy pa-tients without drug resistance were 2.76 times and 2.95 times higher than those in the epilepsy patients with drug resistance (P<0.05), respectively, while the serum level of MRP1 in the epilepsy patients with drug resistance was 4.99 times higher than that in the epileptic patients without drug resistance (P<0.01).CONCLUSION:miR-133a/b transcriptio-nally regulates MRP1.There are lower expression levels of miR-133a/b and higher expression level of MRP1 in the epilep-sy patients with drug resistance compared with those in the epilepsy patients without drug resistance.miR-133a/b and MRP1 may be a diagnostic indicator for determining refractory epilepsy.

Objective:Following the detection of the safety of nerve and muscle stimulators YY 0607-2007 standard, approach the characteristics of nerve and muscle stimulators. Methods: By understanding the standards of particular requirements for the safety of nerve and muscle stimulators and test method for measuring output characteristics of the nerve and muscle stimulators, different types of the products were received multiple detections, analysis, compare and make summary of the features of measuring output characteristics of products. Results:Through proposing the highlights before the detection, sorting complex detection conditions, identifying detection contents and reasonable detection order, combined with the characteristics of nerve and muscle stimulators to make the standard rules more reasonable. Conclusion: It made the detection of output characteristics more convenient and avoided the occurrence of false and missing detection.

Gallstone disease is highly prevalent in clinic,particularly in women and some specific ethnic groups.The formation of water-insoluble cholesterol crystals is due to a misbalance between the three major lipids present in the bile:cholesterol,bile salts,and phospholipids.Many proteins implicated in biliary lipid secretion in the liver are regulated by several transcription factors,including nuclear receptors LXR and FXR.Human and murine genetic,pathophysiological evidence is consistent with the relevance of these nuclear receptors in gallstone formation.In addition,there is emerging data that also suggests a role for estrogen receptor ESR1 in abnormal cholesterol metabolism leading to gallstone disease.A better comprehension of the role of nuclear receptor function in gallstone formation may help doctors to design new and more effective therapeutic strategies for this highly prevalent disease condition.

Radiotherapy is the main treatment for nasopharyngeal carcinoma .The intensity modulated ra-diation therapy is one of the most ideal radiotherapy technology for nasopharyngeal carcinoma .Local recurrence and distant metastasis are still the main reasons responded to the radiation fails .Therefore,chemoradiotherapy has become the most recommended treatment for nasopharyngeal carcinoma ( NPC) ,and the synchronous chemoradio-therapy is a widely accepted joint model .Neoadjuvant chemotherapy shows significant advantages comparing to concurrent chemoradiotherapy in reducing the adverse reactions ,while it is uncertain whether the follow -up ma-intenance chemotherapy can improve total survival .The understanding of targeted drugs in chemoradiotherapy is still in early stage,but the result is worth looking forward to .In addition,novel treatments and concepts ,including immune therapy and biological chemotherapy ,are attracting more and more attention .