Gallbladder cancer (GBC) is the most common malignancy of the biliary tract.Most patients are diagnosed at the advanced stage,missing the optimal chance for curative surgery,thus leading to the fact that GBC is usually associated with poor prognosis.It is very crucial to strengthen the basic research on GBC,which may further improve the diagnosis and treatment.The research updates on the related genes in the initiation and progression,molecular mechanism of lymphatic metastasis,and tumor microenvironment of GBC in recent years were reviewed in this paper.

OBJECTIVETo investigate the effect of cancer-associated fibroblasts (CAFs) on the growth and invasion of gallbladder cancer cells.

METHODSThe CAFs were isolated from human primary gallbladder carcinoma tissues by tissue culture and digestion methods. The cells were purified by differential adhesion method, and the primary cells were identified morphologically and immunocytochemically. The proliferation and invasion of two human gallbladder carcinoma cell lines (SBC-996 and GBC-SD) co-cultured with CAFs were detected by MTT and Transwell chamber assays.

RESULTSGallbladder carcinoma CAFs were isolated successfully by both tissue culture and enzyme digestion methods, and the latter method was more convenient and efficient. MTT and Transwell assays showed that CAFs significantly promoted the proliferation and invasion of the two gallbladder carcinoma cell lines.

CONCLUSIONCAFs can promote the proliferation and invasion of gallbladder carcinoma cells in vitro, suggesting the important role of CAFs in the development of gallbladder carcinoma.

Carcinoma ; pathology ; Cell Line, Tumor ; Cell Proliferation ; Coculture Techniques ; Fibroblasts ; cytology ; Gallbladder Neoplasms ; pathology ; Humans

OBJECTIVE:To systematically evaluate the monitoring system for global short drugs,and provide evidence-based reference and policy recommendations for developing the short drug monitoring in China. METHODS:Relevant literatures pub-lished in PubMed,Embase,CNKI,Wanfang,VIP database from building to Apr. 3rd in 2017 were retrieved by using"Drugs (cheap drugs,essential medicines,emergency drugs) storage""Short drugs""Insufficient supply of drugs""Drug shortage"as Chinese keywords,and"Drug storage""Out-of-stock drug""Stortage of medicine""Stock out of medicine"as English keywords. Literatures about monitoring system for short drugs in Baidu,Google and national or regional health administration websites were collected,and general information,data collection,data validation,data reporting method,feedback and improvement measures of monitoring system were extracted. RESULTS & CONCLUSIONS:Totally 25 literatures were included,20 national or regional health administration websites were retrieved. 11 countries and European Union had established monitoring system for short drugs. The main reporting agencies in each country were different,which were production enterprises,business enterprises and medical in-stitutions. It was mainly reported by network. Data validation was mainly conducted by specialized departments or groups for short drugs in each country. The monitoring reporting included information of short drugs and discontinued drugs. Countermeasures in each country mainly included looking for alternative drugs,encouraging production,temporary import,looking for new or other sources of raw materials and speeding up the approval of short drugs. Besides, precautions included implementation relevant laws and guidelines for short drugs,and increasing the cooper-ation with non-government departments,etc. Monitoring sys-tem for short drugs needs to be further improved in China. Itis suggested to establish monitoring and early warning platform for short drugs,and hierarchical intervention mechanism,improv-ing relevant laws and developing guidelines on managing short drugs.

OBJECTIVETo analyze the clinical features of patients with gallbladder cancer from 17 hospitals in 5 Northwestern provinces (autonomous region) of China from 2009 to 2013.

METHODSA total of 2 379 cases with gallbladder cancer in 17 tertiary hospitals from 5 Northwestern provinces of China from January 2009 to December 2013 were reviewed retrospectively. The clinical data was collected by standardized "Questionnaire for Clinical Survey of Gallbladder Cancer in Northwestern Area of China". χ² test was used to analyze the data.

RESULTS(1) Gallbladder cancer from 17 hospitals accounted for 1.6%-6.8% of all bile tract diseases from 2009 to 2013 in Northwestern China, average was 2.7%. Gallbladder cancer accounted for 0.4%-0.9% of abdominal surgery, average was 0.7%. (2) The incidence of gallbladder cancer was higher in the aged females, the ration of female to male was 1.0 to 2.1. The average age of gallbladder cancer was (64 ± 11) years. The occupation of patients was mainly farmers (χ² = 147.10, P < 0.01). (3) 57.2% of the gallbladder cancers were associated with gallstones. (4) The main pathological patterns of gallbladder cancer were moderate and poor differentiated adenocarcinoma, showing an aggressive malignancy. TNM stage IV accounted for 55.1% of all cases, which was associated with the poor prognosis. (5) The curative resection rate was 30.4%.

CONCLUSIONSGallbladder cancer is common in the aged females and mainly at advanced stage. The screening and follow-up of high-risk groups with ultrasound and other methods regularly could increase the early diagnosis rate of gallbladder cancer, aggressive surgical resection combined with other comprehensive treatment could improve the prognosis of patients.

Adenocarcinoma ; epidemiology ; pathology ; Aged ; China ; epidemiology ; Female ; Gallbladder Neoplasms ; epidemiology ; pathology ; Gallstones ; epidemiology ; Humans ; Incidence ; Male ; Middle Aged ; Prognosis ; Retrospective Studies

Objective To construct mouse BaF3-FIP1L1-PDGFRA(F/P),BaF3-F/P-T674I and BAF3-F/P-D842V pre-B cell strains which stably express F/P fusion protein and its T674I and D842V mutants in order to e-valuate their activity by checking their responses to tyrosine kinase inhibitors(TKIs).Methods Lentivirus infected technique was used to transfect the target gene into BaF3 cells.RT-qPCR was used to detect mRNA expression,and CCK-8 method was used to detect the inhibitory effect of TKIs on the proliferation of stable cell strains.Results The constructed BaF3-F/P,BaF3-F/P-T674I and BAF3-F/P-D842V cell strains all transcripted FIP1L1 and PDGFRA mRNA.They exhibited malignant phenotypic characteristics of proliferation independent of IL-3 and sen-sitivity to corresponding TKIs.Conclusions The pre-B-cell strains stably expressing F/P and its T674I and D842V mutants are successfully constructed,which provide a good cell model for the development of compounds targeting at those molecules.

OBJECTIVE： To systematically evaluate the efficacy and safety of Clonidine tansdermal patch for child tic disorders in children， and to provide evidence-based reference for clinical treatment. METHODS： Retrieved from Medline， Embase， Cochrane library， CNKI， VIP， CBM and Wanfang database， randomized controlled trials （RCTs） about Clonidine tansdermal patch （trial group） versus other therapies （control group， including placebo group， thiopride group， haloperidol group） for child tic disorders were collected from datbase estallishment to July 2018. The literatures met inclusion criteria were summarized. After quality evaluation with Cochrane system evaluation manual 5.1.0， Meta-analysis of reduction rate （amount） of YGTSS， the incidence of ADR and response rate was performed by using Rev Man 5.3 statistical software. Descriptive analysis was performed on indicators of groups that were unable to perform Meta-analysis. RESULTS： A total of 8 RCTs involving 1 320 patients were included. Among them， 2 RCTs involved placebo in control group； 2 RCTs involved thiopride， 3 RCTs involved haloperidol， and 1 RCT involved thiopride and haloperidol. Results of Meta-analysis showed that reduction rate of YGTSS in trial group were significantly higher than haloperidol group [MD＝21.94， 95％CI（21.03， 22.86）， P＜0.001]， but there was no statistical significance compared with thiopride group [MD＝10.66， 95％CI（－15.68， 37.00）， P＝0.43]. The incidence of adverse events （mainly including skin itching， redness， dry mouth， dizziness， decreased blood pressure， abnormal electrocardiogram） in trial group were significantly lower than thiopride group [OR＝0.42， 95％CI（0.22， 0.82）， P＝0.01] and haloperidol group [OR＝0.17， 95％CI（0.09， 0.32）， P＜0.001]， but there was no statistical significance compared with placebo group [OR＝0.61， 95％CI（0.29， 1.29）， P＝0.20]. There was no statistical significance in response rate of trial group compared with thiopride group [OR＝1.29，95％CI（0.38， 4.39）， P＝0.69] and haloperidol group [OR＝1.63， 95％CI（0.89， 2.96）， P＝0.11]. The results of descriptive analysis showed that reduction rate （amount） of YGTSS in trial group was significantly higher than that of placebo group （P＜0.05）， and response rate of trial group was significantly higher than that of placebo group （P＜0.01）. CONCLUSIONS： For child tic disorders in children， Clonidine tansdermal patch is better than placebo and haloperidol in reduction rate （amount） of YGTSS， and is similar to thiopride. Response rate of Clonidine tansdermal patch is better than that of placebo， and is similar to those of thiopride and haloperidol. The safety of Clonidine tansdermal patch is better than those of thiopride and haloperidol， and is similar to that of placebo.

Various c-mesenchymal-to-epithelial transition (c-MET) inhibitors are effective in the treatment of non-small cell lung cancer; however, the inevitable drug resistance remains a challenge, limiting their clinical efficacy. Therefore, novel strategies targeting c-MET are urgently required. Herein, through rational structure optimization, we obtained novel exceptionally potent and orally active c-MET proteolysis targeting chimeras (PROTACs) namely D10 and D15 based on thalidomide and tepotinib. D10 and D15 inhibited cell growth with low nanomolar IC₅₀ values and achieved picomolar DC₅₀ values and >99% of maximum degradation (D_max) in EBC-1 and Hs746T cells. Mechanistically, D10 and D15 dramatically induced cell apoptosis, G1 cell cycle arrest and inhibited cell migration and invasion. Notably, intraperitoneal administration of D10 and D15 significantly inhibited tumor growth in the EBC-1 xenograft model and oral administration of D15 induced approximately complete tumor suppression in the Hs746T xenograft model with well-tolerated dose-schedules. Furthermore, D10 and D15 exerted significant anti-tumor effect in cells with c-MET^Y1230H and c-MET^D1228N mutations, which are resistant to tepotinib in clinic. These findings demonstrated that D10 and D15 could serve as candidates for the treatment of tumors with MET alterations.

OBJECTIVE：To evaluate guidelines f or health technology assessment （HTA）at home and abroad ，and to provide reference for scientific formulation of HTA guidelines in China. METHODS ：Databases including PubMed ，Embase，Guidenlines International Network and 83 official websites from 26 countries governments and academic organizations were searched to collect HTA guidelines from inception to April 2020. Two reviewers independently screened literature and extracted data ，including basic characteristics， content of guideline and assessment content. Then a descriptive analysis was conducted. RESULTS & CONCLUSIONS：A total of 19 guidelines published during 2001 to 2018 were included ，7 guidelines（36.8％）were published in 2015-2020；in addition to 1 guideline from WHO ，14 guidelines （73.7％）were published in Europeand ，2 guidelines（10.5％） in North America and 1 guideline each from South America and Asia （5.3％）. There were 11 guidelines（57.9％）developed by academic organizations and 8 guidelines（42.1％）by health administration ；11 guidelines（57.9％）were evidence-based ，while the others weren ’t evidence- based （42.1％）. The purpose ，content and object of assessment are demonstrated in 19 guidelines；18 guidelines specified the assessment method （94.7％），and 16 guidelines（84.2％）defined the subject of assessment ；14 guidelines （73.7％）specified the HTA assessment process ；12 guidelines（63.3％）mentioned the conflict of interest in HTA assessment process；7 guidelines（36.8％）mentioned the application of assessment results. There are some differences in the formulation methods and contents of HTA guidelines in foreign countries ，but the core contents ar e basically the same. At present ，there is a lack of HTA guidelines in China. We can refer to foreign guidelines，and establish applicable HTA guidelines which aresuitable for national conditions ，so as to provide scientific guidance for HTA research.