Objective To investigate the application value of apparent diffusion coefficient(ADC)histogram parameters of multi-plexed sensitivity encoding diffusion weighted imaging(MUSE-DWI)in evaluating lymph node metastasis of cervical cancer(CC).Methods A total of 54 patients with CC diagnosed pathologically after extensive hysterectomy and pelvic lymph node dissection were analyzed retrospectively,and 74 lymph nodes were extracted,including 28 metastatic lymph nodes and 46 non-metastatic lymph nodes.All patients underwent routine MRI examination and MUSE-DWI before surgery.Through the T2WI fat suppression images were referenced,the region of interest(ROI)covering the entire lymph nodes were drawn on the b=800 s/mm2 images of MUSE-DWI,and ADC histogram parameters were obtained including minimum,maximum,mean,median,percentiles(10 th,25 th,75 th,90 th),kurtosis,and skewness.The differences of ADC histogram parameters between the metastatic lymph nodes and the non-metastatic lymph nodes were compared.The receiver operating characteristic(ROC)curves were drawn and the area under the curve(AUC)were calculated to evaluate the diagnostic efficacy of different parameters in distinguishing lymph node metastasis.Results The mean,median,25 th and 75 th percentiles of ADC histogram of the metastatic lymph nodes were significantly lower than those of the non-metastatic lymph nodes(P＜0.05).However,there were no statistically significant differences in minimum,maximum,10 th percentile,90 th percentile,kurtosis,and skewness(P＞0.05).In the evaluation of various parameters for distinguishing lymph node metastasis,the mean had the highest diagnostic efficacy(AUC=0.718),and when the threshold was 963.07×10-6 mm2/s,the sensitivity and specificity were 0.643 and 0.717,respectively.Conclusion The ADC histogram parameters based on MUSE-DWI have high diag-nostic value in differentiating CC lymph node metastasis,and the mean has the highest diagnostic efficiency.

BACKGROUND: At the end of 2019, the outbreak of coronavirus disease 2019 (COVID-19) severely damaged and endangered people's lives. The public health emergency management system in China has played an essential role in handling the response to the outbreak, which has been appreciated by the World Health Organization and some countries. Hence, it is necessary to conduct an overall analysis of the development of the health emergency management system in China. This can provide a reference for scholars to aid in understanding the current situation and to reveal new research topics. METHODS: We collected 2247 international articles from the Web of Science database and 959 Chinese articles from the China National Knowledge Infrastructure database. Bibliometric and mapping knowledge domain analysis methods were used in this study for temporal distribution analysis, cooperation network analysis, and co-word network analysis. RESULTS: The first international article in this field was published in 1991, while the first Chinese article was published in 2005. The research institutions producing these studies mainly existed in universities and health organizations. Developed countries and European countries published the most articles overall, while eastern China published the most articles within China. There were 52 burst words for international articles published from 1999-2018 and 18 burst words for Chinese articles published from 2003-2018. International top-ranked articles according to the number of citations appeared in 2005, 2007, 2009, 2014, 2015, and 2016, while the corresponding Chinese articles appeared in 2003, 2004, 2009, and 2011. CONCLUSIONS There are differences in the regional and economic distribution of international and Chinese cooperation networks. International research is often related to timely issues mainly by focusing on emergency preparedness and monitoring of public health events, while China has focused on public health emergencies and their disposition. International research began on terrorism and bioterrorism, followed by disaster planning and emergency preparedness, epidemics, and infectious diseases. China considered severe acute respiratory syndrome as the starting research background and the legal system construction as the research starting point, which was followed by the mechanism, structure, system, and training abroad for public health emergency management.
Betacoronavirus ; China ; epidemiology ; Communicable Disease Control ; organization & administration ; Coronavirus Infections ; epidemiology ; prevention & control ; Disease Outbreaks ; prevention & control ; Humans ; Internationality ; Pandemics ; prevention & control ; Pneumonia, Viral ; epidemiology ; prevention & control

Objective To study the features of anatomical delamination of the posterior renal fascia in CT images.Methods Clinical datas and CT images of 85 patients with acute pancreatitis were collected,the anatomical delamination features of the adult posterior renal fascia were observed and recorded.Results (1) 23 cases showed anatomical delamination of the left posterior renal fascia, 9 cases showed anatomical delamination of the right posterior renal fascia, and 8 cases showed anatomical delamination of bilateral posterior renal fascia.(2) The features of anatomical delamination of the posterior renal fascia were detected in the whole posterior renal fascia or in the lateral part of the posterior renal fascia.Anatomical delamination was detected in the whole left posterior renal fascia in 6 cases, and was detected in the lateral part of the left posterior renal fascia in 17 cases.Anatomical delamination was detected in the whole right posterior renal fascia in 4 cases and in the lateral part of the right posterior renal fascia in 5 cases.Anatomical delamination of the whole part in the bilateral posterior renal fascia were detected in 4 cases and pure delamination of the lateral part in the both sides were 4 cases.Conclusion CT images can show the anatomical delamination of the posterior renal fascia which has two types.The anatomical delamination of bilateral posterior renal fascia is not always the same.

Objective To establishing an immortal cell line of familial papillary thyroid carcinoma (FPTC), and explore a new approach for studying familial non-medullary thyroid carcinoma (FNMTC). Methods The specimen from a patient with FPTC was selected, separated, and the primary cells were cultured using DMEM/F12 medium (with TSH, T3, EGF and hydrocortisone). To inducing cell immortalization, the exogenous genes SV40T/TERT were transfected into cells by two ways. RT-PCR was used to detect the expressions of thyroid peroxidase (TPO), thyroid globulin (TG), thyroid stimulating hormone receptor (TSHR) and sodium/iodide co-transporter (NIS). Immunofluorescence method was used to detect the expressions of TPO and GPC3. In order to detect the genomic mutations, the peripheral blood DNA of the patient was extracted. The cell genome was detected. Results The FPTC cells adhered to the plate and showed an irregular polygon shape. The cells can stably grow for six months, FPTC-S (with SV40T transfected) passaged to p26, FPTC cells passaged to p23 and FPTC-ST (with SV40T/TERT transfected) passaged to p19. Both FPTC-S and FPTC-ST can stably express TPO, TG and TSHR in mRNA level. MLH1 R217C mutation existed in the peripheral blood of the patient, and BRAF V600E mutation existed in the primary cultured cells. Either the primary or the immortal cells showed MLH1 R217C mutation. Conclusion This study preliminarily established an immortal cell line of familial papillary thyroid carcinoma with MLH 1 R217C and BRAF V600E mutations. This cell line provides a research model for studying these mutations in FPTC.

In recent years , there are increasing articles concerning Epstein-Barr virus associated lymphoproliferative disorder (EBV+LPD), and the name of EBV +LPD is used widely.However,the meaning of EBV+LPD used is not the same , which triggered confusion of the understanding and obstacles of the communication.In order to solve this problem.Literature was reviewed with combination of our cases to clarify the concept of EBV +LPD and to expound our understanding about it .In general, it is currently accepted that EBV +LPD refers to a spectrum of lymphoid tissue diseases with EBV infection , including hyperplasia , borderline lesions , and neoplastic diseases .According to this concept , EBV+LPD should not include infectious mononucleosis ( IM ) and severe acute EBV infection ( EBV +hemophagocytic lymphohistiocytosis, fatal IM, fulminant IM, fulminant T-cell LPD), and should not include the explicitly named EBV+lymphomas ( such as extranodal NK/T cell lymphoma , aggressive NK cell leukemia , Burkitt lymphoma, and Hodgkin lymphoma , etc.) either.EBV +LPD should currently include: ( 1 ) EBV +B cell-LPD:lymphomatoid granulomatosis , EBV +immunodeficiency related LPD , chronic active EBV infection-B cell type, senile EBV +LPD, etc.(2) EBV +T/NK cell-LPD:CAEBV-T/NK cell type, hydroa vacciniforme, hypersensitivity of mosquito bite, etc.In addition, EBV+LPD is classified, based on the disease process , pathological and molecular data , as 3 grades:grade1, hyperplasia ( polymorphic lesions with polyclonal cells ); grade 2, borderline ( polymorphic lesions with clonality ); grade 3, neoplasm (monomorphic lesions with clonality).There are overlaps between EBV +LPD and typical hyperplasia, as well as EBV+LPD and typical lymphomas .However , the most important tasks are clinical vigilance , early identification of potential severe complications , and treating the patients in a timely manner to avoid serious complications , as well as the active treatment to save lives when the complications happened .

Using the Web Service technology, the paper puts forward a solution of remote communication between PACS and the handheld mobile intelligent devices, the characteristics of the solution are simple, easy to implement, short development cycle, high practicability, and low cost etc.
Artificial Intelligence ; Computer Communication Networks ; Computers, Handheld ; Image Enhancement ; instrumentation ; Internet ; Signal Processing, Computer-Assisted ; instrumentation ; Software

OBJECTIVETo evaluate the therapeutic effects of transcatheter arterial chemoembolization (TACE) with or without radiofrequency ablation (RFA) in hepatocellular carcinoma (HCC) patients based on propensity score matching.

METHODSA logistic regression model was established with the treatment assignment as the dependent variable and the covariates as the independent variables. For each HCC patient, the propensity score was calculated from the model for caliper matching, and a survival analysis of the matched data were carried out.

RESULTSThe covariates between the groups were balanced after caliper matching based on the propensity scores. Before matching, the one-, two-, and three-year survival rates of TACE and TACE+RFA were 52.07% and 59.08%, 32.24% and 36.43%, and 316.54% and 19.39%, with the median survival time of 1.20 and 1.40 years, respectively, showing no significant differences in the overall survival rate between the two groups. After matching, the 1-year, 2-year, and 3-year survival rates of TACE and TACE+RFA groups were 54.39% and 62.28%, 23.15% and 40.08%, and 10.20% and 18.52%, with the median survival time of 1.10 years and 1.50 years, respectively, showing significant differences in the overall survival between the two groups. The survival rate in TACE+RFA group was higher than that of TACE only group.

CONCLUSIONPropensity score matching can effectively reduce the confounding bias of non-randomized clinical observational data for a more accurate evaluation of the therapeutic effect in HCC patients.

Adult ; Aged ; Carcinoma, Hepatocellular ; epidemiology ; mortality ; therapy ; Catheter Ablation ; Chemoembolization, Therapeutic ; Female ; Humans ; Liver Neoplasms ; epidemiology ; mortality ; therapy ; Logistic Models ; Male ; Middle Aged ; Propensity Score ; Survival Analysis ; Survival Rate

Using the technology of Web Service and the Development tools of MyEclipse, we design and realize a Medical Data Integration Platform. The plan can use the existing resources of the hospital adequately, simplify the integration of Medical Data, and have the nice extensibility and maintainability.
Computational Biology ; Internet ; Medical Informatics Applications ; User-Computer Interface

Objective To study the effects of enriched rehabilitative training on the expression of microtu-bule associated protein 2 (MAP-2) and synaptophysin (SYN), and to explore its relationship with brain plasticity. Methods Seventy-seven male Wistar rats weighing 160 to 200 g were randomly divided into an ischemia + enriched rehabilitation group (IE, n=36), an ischemia + standard rehabilitation group(IS, n=8), a sham ischemia + en-riched rehabilitation group (SE, n=21) and a sham ischemia + standard rehabilitation group (SS, n=12). Rats in the ischemia groups had their middle cerebral artery sutured for two hours before reperfusion, while those in the sham groups had a similar operation without occlusion. The enriched groups were given enriched rehabilitative train-ing, while the standard groups were left without any training. Behavioral tests, including the acrobatic performance, were administered once daily 2 days after operation, and SP staining of MAP2 and SYN were used to observe the func-tional recovery and brain plasticity changes among the groups at 1,7, 14, 21 and 28 days after the operations. Re-sults Acrobatic performance times reduced gradually. Bederson scores were significantly better in the IE than in the IS group by the 28th day after the operation). There was no significant difference between IE and IS groups in a foot fault test). The expression of MAP-2 and SYN around the infarct and in the hippocampus decreased significantly at first), then recovered gradually. The expression of MAP-2 and SYN in the IE group was significantly higher than that in the IS group at various time points of observation). Conclusion Enriched rehabilitative training can improve functional recovery and the expression of MAP-2 and SYN after brain ischemia, and the functional enhancement may attribute to the brain plasticity.

ObjectiveTo investigate the effects of Angelica sinensis on the expression of vascular endothelial growth factor (VEGF) Flt-1, Flk-1 mRNA after the brain ischemia-reperfusion injury in rats.MethodsWistar rats were randomly divided into the group A, group B and normal control group. The group A underwent middle cerebral artery occlusion (MCAO) for 2h by suture, group B underwent MCAO for 2h meanwhile received treatment with Angelica sinensis (5 g/kg). Immunohistochemistry and quantitative reverse transcription and polymerase chain reaction (RT-PCR) technique were used to examine the gene expression of VEGF.ResultsThe result of immunohistry revealed that VEGF in the group A and group B reached its peak at 24 h after reperfusion then declined gradually. The result of RT-PCR manifested that the gene expression of VEGF in the group A increased from 3 h after reperfusion and reached its peak at 6 h; in the group B reached its peak on the 3rd day. The expression of VEGF in the group B was significantly increased than group A at the same time point.ConclusionAngelica sinensis can enhance the expression of Flt-1, Flk-1 after transient interruption of cerebral blood flow in rats.