The herpes simplex virus(HSV) Us3 gene encodes a ser/thr protein kinase(PK).As an accessory gene,it plays an important role in the regulation of the apoptosis of infected cells and virus release.Us3-induced alterations in the host cytomorphology are associated with enhanced intercellular virus spread,suggestive of a previously undescribed aspect of alphaherpesvirus spread.

Objective To explore the application of the virtual private network(VPN) to picture archiving and communication system(PACS) for the remote access and management of PACS.Methods The client-ports(namely the remote computers) were connected to Internet by broadband such as ADSL,and the web server of PACS was connected to Internet by broadband router with VPN function so that the remote computers could access the web server of PACS remotely.By the VPN technology,the system administrators of PACS could diagnose and maintain the general malfunctions of the radiology's local network,and thus the remote management came true.Results The remote access and management of PACS had been available in our hospital for half a year since the application of the VPN technology in PACS.By more convenient medical services the work efficiency had been greatly improved.Conclusion The application of VPN technology to PACS,which is characterized by low expense,dependable performance,simple maintenance,can realize remote access and management of PACS.

ObjectiveTo discusses the MSCT multiplanar reconstruction manifestation (MPR) of localized fat collection adjaction to subdiaphragmatic inferior vena cava (IVCfat).MethodsThe thoracic and abdominal MSCT scan data of 8246 patients were browsed,45 patients with presumed IVCfat on axial CT scans were further studied prospectively with MSCT MPR.The predisposing position of IVCfat and its relationship with IVC were observed.It was divided into two kinds of intraluminal type and extraluminal type according to the angle of IVCfat with respect of the wall of IVC.The other 50 patients without IVCfat were randomly selected as the control group.The sagittal inclination angle (SIA) and diameter ratio (DR) between supra- and sub-diaphragmatic IVC between the two groups were compared by using t test.Results The detection rate was 0.55％ (45/8246).Of which hepatic vein lacuna 8 patients,subdiaphragmatic gap medial to IVC 28 patients and IVC groove 9 patients.The shape of IVCfat showed mainly for the round,oval and crescents on axial CT scans,of 15 patients intraluminal type,4 showed target signs .The shape of IVCfat showed mainly for half-moon at MPR.The SIA and DR at IVCfat group were 21.62° ± 8.42°and 2.01 ±0.84 respectively,at control group were 16.75° ±7.82°(t =1.594,P ＞0.05) and 1.31 ±0.28(t =2.341,P ＜ 0.05 ) respectively.ConclusionThe round,oval or half of limited fat density shadow adjaction to subdiaphragmatic inferior vena cava which similar to in the lumen is the characteristic performance of IVCfat,it may be an anatomical variation.

Objective To explore the clinical features,treatment and prognosis of malignant solid tumors in the digestive tract in children and adolescents. Methods Sixty-five children and adolescents with malignant solid tumors in the digestive tract from January 1997 to June 2017 were selected,who were treated at the Affiliated Cancer Hospital of Zhengzhou University/Henan Cancer Hospital. The tumor site,gender,age,clinical presentations,treatment, follow-up time and their life status by deadline follow-up in 65 children and adolescents were collected respectively, and the clinical features,treatment methods and prognosis were retrospectively analyzed. The follow-up deadline was on December 31,2017. Results The most frequent sites of tumors were liver tumor(36 cases,55. 38%),followed by rectum tumor(11/65 cases,16. 92%),colon tumor(6/65 cases,9. 23%),pancreas tumor(5/65 cases,7. 69%),gas-tric(3/65 cases,4. 62%),esophagus (1/65 cases,1. 54%),gallbladder tumor (1/65 cases,1. 54%),ileum tumor (1/65 cases,1. 54%),and appendix tumor (1/65 cases,1. 54%). The prevalence rate in males and females was 1. 32:1. 00. The age of embryo tumor incidence was smaller,and the age of epithelium cancer incidence was older. The main symptoms included abdominal distension and pain (66. 15%,43/65 cases). Twenty-seven patients (41. 5%, 27/65 cases)was in stageⅣ. Radical and palliative surgery were the main treatment in 50 cases (76. 92%). The 1-year,3-year,5-year overall survival rates were 60. 7%,31. 0%,18. 8%,respectively. The overall survival rate of co-lon and rectal cancer was higher than that of hepatocellular cancer,and the differences were all statistically significant (χ2＝6. 268,P＝0. 012;χ2＝11. 772,P＝0. 001). The overall survival rate of patients who received surgery combined with chemoradiotherapy was the longest and those undergoing chemotherapy only was the shortest,but the differences had no statistical significance among 4 groups of sheer surgery,chemotherapy alone,surgery combined with chemothera-py and surgery combined with chemoradiotherapy(all P＞0. 05). Conclusion The malignant solid tumors in the di-gestive tract in children and adolescents have a poor prognosis. The unspecific presentation makes the diagnosis diffi-cult. It is very important to diagnose early and treat as soon as possible by the combination of surgery,chemotherapy and radiotherapy to improve the overall survival rate.