OBJECTIVE To investigate the effect of gene CD47 on immune microenvironment of lung squamous cell carcinoma and predict its immune response. METHODS The differences in the expression of CD47 between lung squamous cell carcinoma tissues and normal tissues were compared through The Cancer Genome Atlas(TCGA) databases. CD47 involved immune-related pathways were analyzed by Gene Set Enrichment Analysis(GSEA). Tumor Immune Estimation Resource(TIMER) databases and TISIDB databases(http://cis.hku.hk/TISIDB/TISIDB) were employed to analyze the relationship between CD47 gene expression in lung squamous cell carcinoma and immune cells infiltration in the tumor microenvironment. And further explored the associations between CD47 and other immune-related molecules such as PD-1, PD-L1, CTLA-4, IDO-1. Using the pRRophetic and TIDE algorithms, this study predicted the correlation between the expression of CD47 gene and chemotherapy drug sensitivity as well as the response to immunotherapy. RESULTS Compared with normal tissues, CD47 was lower expressed in lung squamous cell carcinoma tissues. It was found that CD47 could activate immune-related pathways such as the inflammatory response, interferon alpha response, interferon gamma response and JAK-STAT pathway. In lung squamous cell carcinoma tissues, the expression level of CD47 was significantly positively correlated with the infiltration level of B-cells, CD8T-cells, CD4T-cells, macrophage, neutrophils and dendritic cells according to the two databases. At the same time, CD47 showed a positive correlation with other immune checkpoints such as PD-1, PD-L1, CTLA-4, IDO1. The result of chemotherapy sensitivity indicated that in lung squamous cell carcinoma tissues, IC50 values of high expression CD47 group were lower than that for chemotherapy drugs such as sunitinib, dasatinib, doxorubicin and gemcitabine. However, the response rate to immunotherapy was lower in the low expression group for the immunotherapy. CONCLUSION CD47 is low expressed in lung squamous tissue, it can activate immune related pathways, and has a high response rate to immunotherapy. It can be used as a novel molecular marker for lung squamous cell carcinoma.

ObjectiveTo investigate the clinical characteristics and risk factors of hyperamylasemia and acute pancreatitis after percutaneous transhepatic biliary stenting (PTBS). MethodsA retrospective analysis was performed for the clinical data of 249 patients with malignant biliary obstruction who were admitted to Department of Interventional Radiology, The First Affiliated Hospital of Nanjing Medical University, and underwent PTBS from March 2016 to February 2020, and according to the presence or absence of postoperative hyperamylasemia or acute pancreatitis, the patients were divided into two groups to analyze incidence rate, severity, and related risk factors. The t-test or the Mann-Whitney U test was used for comparison of continuous data between groups, and the chi-square test was used for comparison of categorical data between groups. A multivariate logistic regression analysis was performed for the factors with P＜0.1 in the univariate analysis to investigate independent risk factors for hyperamylasemia and acute pancreatitis after PTBS. ResultsAfter PTBS, 55 patients (221%) patients had abnormally elevated serum amylase, among whom 26 (10.4%) were diagnosed with hyperamylasemia and 29 (11.7%) were diagnosed with acute pancreatitis. All patients with acute pancreatitis had mild manifestations. The multivariate logistic regression analysis showed that age ≤60 years (odds ratio ［OR］=2.2, 95% confidence interval ［CI］: 1.07-4.52, P=0033), iodine-125 seed strand implantation (OR=2.8, 95%CI: 1.21-6.45, P=0.016), biliary stent placement across the papilla (OR=6.3, 95%CI: 2.85-1405, P＜0.001), and visualization of the pancreatic duct during surgery (OR=13.9, 95%CI: 5.64-3403, P＜0.001) were risk factors for hyperamylasemia and acute pancreatitis after PTBS. ConclusionHyperamylasemia and acute pancreatitis are relatively common complications after PTBS. Age ≤60 years, iodine-125 seed strand implantation, biliary stent placement across the papilla, and visualization of the pancreatic duct during surgery are independence risk factors for hyperamylasemia and acute pancreatitis after PTBS.

By comparing the proportion of hospital pharmaceutical functions and work contents of different levels of pharmaceutical professionals at home and abroad, the authors divided pharmaceutical care in medical institutions into basic pharmaceutical care based on drug management and advanced pharmaceutical care based on drug treatment. Different pharmaceutical service levels created different pharmaceutical service values. Pharmaceutical classification service can stimulate the work potential of pharmaceutical professionals at all levels, improve the service level of pharmacists, and provide basis for the better distribution of medical costs in China.

Objective:To investigate the relevant situation of the emergency departments (ED) of general hospitals at all levels in Zhejiang Province participating in the prevention and control of Corona Virus Disease 2019 (COVID-19), and to provide a reference for further improving the capacity of emergency services.Methods:A multi-center cross-sectional investigation study was jointly initiated by the Zhejiang Provincial Emergency Medicine Quality Control Center, the Emergency Medicine Branch of Zhejiang Medical Association, and the Emergency Physicians Branch of Zhejiang Medical Doctors Association. Before investigation, experts were organized to develop a special questionnaire. Then the ED of general people's hospitals or Chinese Medicine hospitals at the county/district-level or above were included and their participations in the prevention and control of COVID-19 epidemic between March 9, 2020 and March 15, 2020 were investigated. The collected information included: basic information of the hospitals; participation of ED in fever clinics; the number of COVID-19 patients admitted to ED; the situation of ED support to the anti-epidemic front-line; and the epidemic prevention facilities of ED, and the early supply of medical protective equipments.Results:A total of 181 hospitals from 11 prefectures and cities across the province were finally included, including 52 (28.7%) Grade-A tertiary hospitals, 45 (24.9%) Grade-B tertiary hospitals, 64(35.4%) Grade-A secondary hospitals, and 20 (11.0%) Grade-B secondary or lower hospitals. Among them, 93 (51.4%) were COVID-19 designated hospitals, and 49 (27.1%) had the ability to detect COVID-19 nucleic acid; 177 (97.8%) set up independent fever clinics and 33 (18.6%) were managed by ED alone or mainly. The medical staffs of 65 (36.7%) fever clinics were all or mainly from ED. A total of 213 cases of COVID-19 were received/treated in 40.3% ED, accounting for 17.3% of the total number of cases in Zhejiang Province. A total of 3 848 doctors and nurses supported the front-line of epidemic prevention, of them, 253 supported Hubei Province (accounting for 12.5% ??of the total number). There were 68.5% and 76.8% ED having spare separate clinic and ordinary rescue single room to deal with the COVID-19. In addition, at the early days of anti-epidemic, more than 50% ED were in short supply or even had no medical protective equipment.Conclusions:The ED of Zhejiang Province plays an important role and has made a great contribution to the prevention and control of the COVID-19 epidemic. It is necessary to improve the conditions of ED to effectively respond to the prevention and control of daily infectious diseases.

The incidence of testicular infarction secondary to epididymal-orchitis is extremely low. It usually manifests as acute testicular enlargement and pain, which requires differentation with testicular tumors and testicular torsion. This article reported a case with 10 days unsatisfied conservative treatment. Scrotal exploration operation revealed no obvious formation of abscess cavity. Subdivision of spermatic cord sheath, testicular sheath reversal drainage, and testicular sheath decompression treatment were performed. The pain of the patient relieved significantly after surgery. No abnormality was recorded within 6 months follow-up.

Criteria for diagnosis of Alzheimer's disease (AD) is not available in China.The international criteria is not a proper choice due to issues such as translation and lead to low diagnostic rate and high rate of missed diagnosis.The research group of Alzheimer's Disease Chinese (ADC) reviewed knowledge and techniques in neuropsychology,neuroimaging,molecular biology,and clinical neurology,and systematically studied the detection techniques such as memory,language,visuospatial,executive function,and medial temporal lobe visual scores on MRI,and their optimal threshold and diagnostic value for the diagnosis of AD.Through a systematic review and consensus meeting,a diagnostic framework for screeningAD in the Chinese population was established.Among these methods,an operational standard for clinical pathology models increased the diagnostic sensitivity by 15％.The sensitivity and specificity of screening memory impairment increased by 18.1％ and 11.6％,respectively.The sensitivity of screening medialtemporal lobe atrophy increased by 24.5％ and missed diagnosis was decreased by 34.5％.An operational standard for clinical biology models,incorporating the latest molecular imaging and molecular biology techniques,has enabled the early diagnosis of AD in China.The framework combines a principled diagnostic guideline with an operational screening protocol,which is applicable to all clinical settings and of great significance for the early detection,early diagnosis and early treatment of AD.

OBJECTIVE： To provide reference for the revision of China National Formulary for Children and make a sample for Chinese medical institutions to formulate their own formulary. METHODS： The suggestions on formulary revision and the formulation of formulary in medical institutions were put forward through comparing the selection principle， catalogues， chapters， drug items， formulary quantity and coincident drugs of World Health Organization （WHO） Model Formulary for Children （2010 edition） （WMFc）， British National Formulary （Children edition） （2016-2017 edition） （BNFc）， Chinese National Formulary （Children edition） （2013 edition） （CNFc）. RESULTS & CONCLUSIONS： The selection principle of WMFc was safe， effective and economical； that of BNFc was accurate and up-to-date， that of CNFc was safe， effective， economical and appropriate. The catalogues of three formularies included introduction， outline and separated section， but the contents or descriptions were different. For example， in separated section， WMFc was divided into 27 chapters， BNFc was divided into 16 chapters and CNFc was divided into 20 chapters. The chapters and catalogues of WMFc were classified according to ATC； those of BNFc were classified according to organ system and disease arrangement； those of CNFc were classified according to disease treatment system. 15 chapters of three formularies were the same， such as drug for nervous system diseases， drug for endocrine system and drug for respiratory system. The unique chapter of CNFc was “drugs for stomatological diseases”. The drug items of three formularies included drug name， indications， usage and dosage， contraindication， ADR， matters need attention， preparation and specifications， etc. Compared with CNFc， unique chapters of WMFc included ATC numbering， drug interaction， liver injury， etc.； those of BNFc included pharmacological action， interaction， allergy， etc. WMFc contained 271 drugs， CNFc 847 drugs and BNFc 955 drugs. Among them， there were 166 overlaps between WMFc and CNFc， 359 between BNFc and CNFc， 174 between WMFc and BNFc. There were 141 same drugs in the three formularies. When revising or formulating formulary， our country should not copy them mechanically， but should revise formulary according to our national conditions. It is necessary to refer to selection principles of WMFc and BNFc， update our children’s formulary in certain or real time， standardize drug access criteria of formulary， rationally increase the variety of drug and call on the relevant departments of the state to improve the standards for the formulation of drug instructions for children.

Objective To evaluate the feasibility and safety of establishing benign proliferative esophageal stenosis model by using stent implantation in experimental rats.Methods A customized self-expanding,metallic and straight tubular stent was used in this experiment (5 mm in diameter and 15 mm in length),on both sides at the stent's middle part there was a protruding barb that was used as a fixation device.Twelve healthy Sprague Dawley (SD) rats were randomized divided into group A (blank control group) and group B (stent implantation group),with 6 rats in each group.Esophageal stent implantation was employed in the rats of group B,and esophageal radiography was separately performed immediately,one and 4 weeks after stent implantation.All the experimental rats were sacrificed 4 weeks after stent implantation.The normal esophageal tissue of the rats in group A and the esophageal tissue at stent site of the rats in group B were collected and sent for pathological examinations,including gross morphology,light microscopy,etc.Results Successful stent implantation was achieved in all rats of group B,and the esophageal radiography performed immediately,one and 4 weeks after stent implantation showed no esophageal stent displacement;no severe complications occurred during the operation or follow-up period.Compared with group A,esophageal radiography reexamination performed 4 weeks after stent implantation in group B revealed that esophageal stricture at stent segment,caused by benign tissue hyperplasia,could be observed.The esophageal stent segment was taken out,its lumen was obviously narrowed under gross observation,and typical benign hyperplasia could be seen under optical microscope examination.Conclusion Using esophageal stent implantation to establish esophageal stenosis model is safe and feasible in experimental rats.The use of esophageal stent with barbs can significantly reduce the incidence of stent displacement.

Objective To compare the difference in clinical prognosis of patients with low malignant obstructive jaundice treated by percutaneous biliary stent insertion across or above the duodenal papilla.Methods 56 patients with malignant biliary obstruction were reviewed retrospectively.Stents were placed above the duodenal papilla in 31 cases (group A) and across the duodenal papilla in 25 cases (group B).Total bilirubin reduction rate after 4-7 days of the procedure, biliary infection rate and stent occlusion rate were evaluated and compared between two groups.Results Mean survival periods were 180.3±142.5 days for group A and 178.6±137.7 days for group B (P=0.840).Total bilirubin level was decreased by 42.0±43.6% for group A and by 41.4±28.7% for group B after 4-7 days of the procedure(P=0.950);clinical success rates were 93.5% for group A and 92.0% for group B (P=1.0).Post-procedure cholangitis occurred in 7 cases (22.6%) in group A and 5 cases (20.0%) in group B (P=0.815).Stent occlusion rates were 22.6% and 28.0% for group A and group B (P=0.642).Conclusion For patients with lower malignant biliary obstruction, both of the two modalities of stent placement are safe and effective treatment.Stent placement across the duodenal papilla do not increase the development of stent occlusion or cholangitis compared with stent placement above the duodenal papilla.

Objective To evaluate the safety and efficacy of peripheral chemoembolization by using ethanol-soaked gelatin sponge (ESG) combined with chemotherapeutic drugs and/or iodized oil in treating patients with hepatocellular carcinoma (HCC) complicated by moderate-to-severe hepatic arterio-portal shunts (APS).Methods The clinical data of 106 HCC patients associated with moderate-to-severe APS,who were treated with ESG chemoembolization during the period from June 2008 to December 2015,were retrospectively analyzed.The postoperative improvement of APS,the procedure-related complications,the tumor response,the survival time,the prognostic factors,etc.were statistically analyzed.Results In the 106 HCC patients associated with moderate-to-severe APS,the median survival time was 278 days,and the 6-,12-and 18-month cumulative survival rates were 70.8％,36.1％ and 16％,respectively.Univariate analysis showed that sex,total bilirubin level,maximal tumor diameter,history of previous treatment,tumor response and postoperative improvement of APS were closely correlated with the patient's prognosis.Multivariate regression analysis indicated that tumor response and postoperative improvement of APS were the independent protection factors,while the female sex and the maximal tumor size ≥5 cm were the independent risk factors.Conclusion For the treatment of HCC complicated by moderate-to-severe hepatic APS,transarterial chemoembolization by using ESG combined with chemotherapeutic drugs and/or iodized oil is safe and effective.The presence of tumor response to treatment and the postoperative improvement of APS indicate a better prognosis.The female sex and the maximal tumor size ≥5 cm are the independent prognostic risk factors.