Objective To establish a method for the isolation of Zika virus and to gather experi-ences for viral isolation. Methods Suckling mice at age 1-3 days were inoculated with serum samples posi-tive for Zika virus through intracranial injection. All mice were sacrificed 6 days after the injection. Viral nu-cleic acids were extracted from brain, heart, liver, spleen, lung, kidney, muscle, skin and intestine tissue samples and analyzed by real-time RT-PCR. The supernatants of brain tissues positive for Zika virus were used for subculturing. Nested PCR was performed to amplify the NS5 gene of the isolated virus. The se-quences of NS5 gene were analyzed by using MEGA6. 0 software. Results All of the tissue samples were positive for Zika virus. Higher viral loads were detected in heart and brain tissue samples with cycle thresh-old (Ct) values of 24. 4 and 25. 3, respectively. The second generation of Zika virus was identified in suck-ling mice brain tissues 2 days after infection by using real-time RT-PCR. The amplified product of nested PCR was 972 bp in length. Sequencing analysis showed that the isolated Zika virus ( GDZ16002 strain) be-longed to the Asian lineage. Conclusion A strain of Zika virus was successfully isolated in China by using intracranial injection via a suckling mouse model. The isolated Zika virus belonged to the Asian lineage.

Objective To provide scientific evidences for Zika virus detection by clarifying the means by which Zika virus was discharged and the duration of corresponding processes. Methods Various samples of Zika cases were collected at different times and detected by using real-time RT-PCR. The positive samples were inoculated into cells and suckling mice through intracranial injection. The whole genome se-quences of those isolated Zika virus strain were sequenced and the results were further analyzed by comparing with the sequences of Zika virus from GenBank. Results The positive rates of Zika virus in urine, saliva and serum samples were 82. 4% (14/17), 82. 4% (14/17) and 52. 9% (9/17) respectively. The longest period of detected presence of Zika virus was found in urine samples amongst the three types of samples, fol-lowed by saliva and serum samples. Six Zika virus strains were isolated from 9 positive serum samples. Phy-logenetic analysis showed that the six genomes of Zika virus all belonged to Asia lineage, but located in two branches by Samoa and Venezuela strains. Conclusion This study indicated that urine, saliva and serum all could be used as the samples for routine detection of Zika virus. Urine and saliva samples showed higher detection rates of Zika virus RNA in comparison to serum samples, while Zika virus could be easily isolated from positive serum samples. Suckling mice were better for Zika virus isolation than cell lines.

ObjectiveTo investigate the clinical effect of infusion of albumin versus artificial colloidal fluid after ascites drainage in patients with liver cirrhosis and ascites. MethodsCochrane Library (from 1993 to February 2018) PubMed (from 1966 to February 2018), Embase (from 1990 to February 2018), Chinese Scientific Journal Full-Text Database (from 1994 to February 2018), CBM (from 1978 to February 2018), China Science and Technology Journal Database (from 1989 to February 2018), Chinese Medical Association Digital Periodical Database (from 1997 to February 2018), and related periodicals and conference proceedings were searched for randomized controlled trials (RCTs) on infusion of albumin and artificial colloidal fluid after ascites drainage in patients with liver cirrhosis and ascites. The modified JADAD method and Cochrane systematic review were used for data extraction and literature quality assessment, and a statistical analysis was performed. RevMan 53 was used for the Meta-analysis. ResultsA total of 7 RCTs with 696 patients were included, with 299 patients in the human serum albumin group and 397 in the artificial colloidal fluid group. The human serum albumin group had a significantly lower incidence rate of hyponatremia than the artificial colloidal fluid group (11.04% vs 20.4%, risk ratio ［RR］=0.58, 95% confidence interval ［CI］: 0.40-0.84, P=0.004). There were no significant differences between the two groups in the incidence rates of kidney injury (702% vs 7.81%, RR=0.93, 95%CI: 0.53-1.65, P=0.82), hepatic encephalopathy (6.77% vs 7.45%, RR=0.87, 95%CI: 0.48-1.55, P=0.63), gastrointestinal bleeding (3.91% vs 3.65%, RR=0.97, 95%CI: 0.43-2.22, P=0.95), abdominal infection (522% vs 4.56%, RR=1.07, 95%CI: 052-2.18, P=0.86), and hospital death (12.78% vs 14.59%, RR=0.70, 95%CI: 047-1.02, P=0.06). ConclusionHuman albumin has an advantage over artificial colloidal fluid in reducing hyponatremia after ascites drainage in patients with cirrhotic ascites.

Currently, continuous renal replacement therapy (CRRT) is one of the most important means of organ support methods in critical care medicine. Anticoagulation is an essential part of the treatment process due to its prolonged duration. Patients with liver failure often have coagulation dysfunction and heparin anticoagulant can increase the risk of bleeding, but without heparin anticoagulant, coagulation can easily occur. In addition, an increased volumetric load, hemodynamic instability, nursing workload and other problems are major issues. Therefore, regional citrate anticoagulation (RCA) is the main anticoagulant method for CRRT therapy in patients with liver failure. This article reviews the mechanism, indications, advantages and disadvantages of using RCA to CRRT in hepatic failure.

Although the risk of post-hepatectomy liver failure is severe and it affects the prognosis of patients,hepatectomy is the first choice for hepatocellular carcinoma patients.At present,the mechanism of liver regeneration and post-hepatectomy liver failure is unclear.In this paper,we reviewed the liver regeneration for three stages:initiation,proliferation and termination,and also reviewed the mechanism of post-hepatectomy liver failure.

Objective:To establish a standardized information management system (IMS) for preserving, managing, querying, and performing statistics on biospecimens and their clinical data, which is conducive to improving the utilization of biobank.Methods:Under the premise of ensuring operating environment and data security, a database-based data logic relationship model is created and applied to the IMS to manage and analyze biospecimens and their supporting clinical information of patients enrolled in the biobank of our center.Results:To ensure the establishment of the follow-up cohort, biospecimens and clinical information of inpatients and outpatients were continuously collected in the biobank of our center. Since December 2014, more than 270 000 biospecimens from inpatient, outpatient, and scientific research have been preserved. The IMS optimized by this model efficiently completes the basic work of the biobank. At the same time, the data can be queried jointly and in batches, and then converted into a report format for statistical analysis.Conclusions:The IMS of our center is suitable for application and popularization as a construction and management model for the hospital-level biobank, which meets the daily work of the biobank and diverse research needs, and provides a convenient platform and rich resources for the development of precision medicine.