Hantavirus is the main cause of hemorrhagic fever with renal syndrome (HFRS). It is an acute infectious diseases characterized by fever, hemorrhage, nephritis or thrombocytopenia, and hantavirus pulmonary syndrome(HPS). The main clinical manifestations are fever, hemorrhagic lesion, acute respiratory distress and capillary leakeage syndrome. These are four different serotypes of the hantavirus species: Hantan virus(HTNV),Seoul virus(SEOV),Dobrava/Belgrade virus(DOBV),and Puumala virus(PUUV). They are known to cause HFRS, while Sin Nombre virus(SNV) causes HPS. In China, these are two serotypes of hantavirus: HTNV and SEOV found. The severity of infection depends on the viral serotype. To find a safe, rapid and specific serotyping diagnosis of the causative virus is important. The results not only can be beneficial for rodent control, but also for prevention and therapy. The current research of Hantavirus nucleocapsid protein used as serotyping antigen are summarized.

Objective To observe changes of ?-glycuronida se (?-G) activity in blood and intraabdominal exudate in a monkey model with ac ute necrotic pancreatitis and the effects of somatostatin.Method The ANP model was induced by intrapancreatic duct injection of bile and 5% trypsin. Somatostatin was administrated at a dosage of 10 ?g?kg~-1?h~-1 in the treatment group (6 monkeys), w hile normal saline was given in 6 control monkeys. Blood and exudate were col lected for the meas urement of ?-G activity (?g/h?ml~-1). Resul ts (1)the mortality rate was 100% and 50% in the control group and treatment group, and the average survival time was (31?9) h and (53 ?24) h (P

In this paper, a segmentation method, supervised FCM, is used to segment multi-spectrum MR imaging. The qualitative evaluation of human brain can be provided by the results for diagnostics. It can improve the results using FCM.

To evaluate the inhibitive effect of plant protein MAP30 (momordica anti-HIV protein of 30kDa), AZT (3′-azido-2′,3′-dideoxythymidine) , ACV (acyclovir) and IFN-?2a (interferon-?2a) against HIV-1 in vitro, MT4 was used as the target cell and the inhibitive effects of these drugs on HIV-1 P24 expression were investigated by ELISA. The inhibitory effect of these drugs on HIV-1-induced cytopathy was also evaluated. The 50% inhibition concentration (IC 50) of MAP30 was 0.9?mol/L. In comparison, the IC 50 for AZT , a commonly used anti-HIV drug, was 0.7?mol/L. The cytopathic effect induced by HIV-1 was also inhibited by MAP30 and AZT. ACV and IFN-?2a showed little effect on HIV-1. All these results strongly indicated that plant protein MAP30 could obviously inhibit HIV-1 replication in vitro.

Objective To investigate the short-term surgical effect and complications of posterior dislocation of the hip with femoral head fractures.Methods Twenty-two patients with posterior dislocation of the hip with femoral head fractures treated surgically from December 1999 to December 2008 were reviewed retrospectively.All the patients were males aged from 23-52 years (mean 39.2 years).According to Pipkin classification,fractures were type Ⅰ in nine cases (41％),type Ⅱ in seven (32％),type Ⅲ in two (9％) and type Ⅳ in four (18％).Different surgical approaches and treatment methods were employed together with a periodic follow-up.Harris score and Thompson & Epstein score were used as measurement standard in postoperative clinical and radiological follow-up.Postoperative complications were analyzed as well.Results All the patients were followed up for mean 36 months.Clinical outcome as assessed by Harris criteria was excellent in 10 cases,good in seven,fair in two and poor in three,with excellent-good rate of 77％.Complications included femoral head avascular necrosis in four cases and traumatic arthritis in six.Heterotopic ossification of the hip did not occur.One case complicated with idiopathic injury of sciatic nerve was recovered at one year after operation.Conclusions Posterior dislocation of the hip with femoral head fractures should be operated as soon as possible.Operational modalities should depend on the type of fractures for the sake of reducing complications.

The coding region of S genome segment of Hantaan virus (76/118 strain) was inserted into the eukarytic expression plasmidpVR1012. The recombinant expression plasmid pVRS22 was constructed. Vero-E6 cells were transiently transfected in vitro with pVRS22 plasmid. The transient expression of Hantaan virus nucleocapsid proteins in Vero-E6 cells was detected by indirect immunofluorescence assay (IFA) with monoclonal antibody 5H5 against Hantaan virus.

OBJECTIVETo determine the frequency and characteristics of reassortment among Hantaan and Seoul viruses causing hemorrhagic fever with renal syndrome (HFRS).

METHODSMixed infections were initiated in tissue culture, using Hantaan virus strain 76 - 118 and Seoul virus strain SR-11. Potential reassortant virus plaques were picked out by multiplex RT-PCR, using primers specific for individual genome segments (L, M, S) of each strain.

RESULTSMost of the progeny virus plaques (68.19% of 44) had parental genotype of 76 - 118 strain or SR-11 strain while 2 of 44 plaques had mixed genotypes that yielded RT-PCR bands for the same segment of both parental strains. Reassortant viruses were detected in 68.19% of 44 progeny plaques tested, involving the M and S segments. In addition, approximately 4.55% of the progeny virus plaques appeared to contain S or M segments originating from both parental virus strains, showing that they were diploid.

CONCLUSIONGenetic reassortment can occur between Hantaan virus and Seoul virus strains.

Animals ; Cercopithecus aethiops ; Genome, Viral ; Genotype ; Hantaan virus ; genetics ; RNA, Viral ; genetics ; Reassortant Viruses ; genetics ; Reverse Transcriptase Polymerase Chain Reaction ; Seoul virus ; genetics ; Vero Cells

Objective To analyze the clinical characteristics of connective tissue disease related interstitial lung disease (CTD-ILD).Methods The demographic data,clinical manifestations,blood gas analysis,lung function,chest high resolution CT (HRCT),histopathology of 186 patients with CTD-ILD admitted in Jinhua Central Hospital from January 2013 to December 2017 were retrospectively analyzed.Results In 186 patients with CTD-ILD,70 were males and 116 were females,with a mean age of 56.22± 12.27.Among them,61 cases were polymyositis/dermatomyositis (DM/PM)-ILD,44 cases were rheumatoid arthritis (RA)-ILD,26 cases were interstitial pneumonia with autoimmune features (IPAF),16 cases were systemic sclerosis (SSc)-ILD,14 cases were Sjogren syndrome (SS)-ILD,11 cases were overlap syndrome (OS)-ILD,7 cases were systemic lupus erythematosus (SLE)-ILD,5 cases were undifferentiated connective tissue disease (UCTD)-ILD,and 2 cases were mixed connective tissue disease (MCTD)-ILD.The incidence of respiratory symptoms was higher than that of systemic symptoms,and the incidence of systemic symptoms was higher than that of skin symptoms.Cough was the most common symptom of respiratory system,and arthralgia was the most common symptom of systemic symptoms,accounting for 54.9％(101/186) and 48.9％ (91/186)respectively.Blood gas analysis showed that hypoxemia accounted for 56.5％(83/147) and type Ⅰ respiratory failure accounted for 26.5％(39/147).The proportion of restrictive ventilation dysfunction in pulmonary function tests was 70.9％(105/148) and the diffuse dysfunction was 81.1％(120/148).The manifestations on HRCT were reticular linear shadow (44.1％),ground-glass opacity (54.3％),consolidation (23.1％),nodules shadow (20.9％) and cystic low density shadow(9.1％).The histopathological diagnosis mainly was non-specific interstitial pneumonia (NSIP,43.0％) and usual interstitial pneumonia (UIP,40.0％).Conclusion The arterial blood gas analysis,lung function and chest HRCT screening,and lung histopathological examination are important for early identification and diagnosis of CTD-ILD.

Objective To explore the feasibility of hybrid procedure of percutaneous puncture for residual shunt after ventricular septal defect(VSD) repair.Methods From March 2015,we did percutaneous punctured transcatheter device closure of residual shunt after VSD repair for four patients.The patients included 2 males and 2 females with age from 4 years 9 months to 11 years 7 months and weight from 18 kg to44 kg.Four patients are diagnosed for4 years after VSD repair,3 years after tetralogy of Fallot (TOF),3 years after coarctation of aorta(CoA) combined with VSD,and 1 year after VSD repair,respectively.The withsize of residual shunt from 4.8 mm to 6.8 mm.Residual shunt are perimembranous,conoventricular and intracristal.Punctured directly through the right ventricular surface into the right ventricle in the 4-th or 5th intercostal space of the left sternal border.Next,extracted the guide wire after inserting a conveyor tube.Subsequently,7-10 mm VSD closure device were delivered via the conveyor tube.Results All the four operations were succeeded.A total of four closure devices were placed.Two of them are equilateral devices,and two are decentered devices,with size from 7mm to 9mm.Echocardiographyexamination revealed no significant pericardial effusion.Post-operative ultrasonic cardiogram showed the VSD closure device on site,with no pericardia1 effusion and no obvious morphological abnormalities of the valve.For one-year follow-up,the cardiac functionsof all patients were well.Conclusion Percutaneous punctured transcatheter device closure is a new,efficient and reliable method of treatment for children withresidual shunt after VSD repair.This method also can extend and offer a new avenue for valvular prosthesis and Perimembranous VSD.

Objective To explore the feasibility of percutaneous puncture for ventricular septal defect(VSD).Methods From March 2015,we did percutaneous punctured transcatheter device closure of VSD for 22 patients.The patients included 15 males and 7 females with age from 2 years 6 months to 11 years 7 months, weight from 13.5 kg to 44.0 kg.Among 22 pa-tients,6 were diagnosed with residual shunt after VSD repair, with size of residual shunt from 4.8 mm to 7.0 mm.Residual shunts are perimembranous, conoventricular and intracristal.The other 16 patients were diagnosed with isolated VSD,with de-fect size from 3.5 to 5.1 mm.For all patients,we punctured directly through the right ventricular surface into the right ventri-cle in the 3th or 4th intercostal space of the left sternal border.Next, we succeeded to extract the guide wire after inserting a conveyor tube for 21 patients.Subsequently,7-10 mm VSD closure device were delivered via the conveyor tube.Only one patient was changed to perform occlusion of VSD through chest small incision due to improper selection of punctured position. Results A total of 21 closure devices were placed for 21 patients.18 of them are equilateral device,and 3 are decentered de-vice,with size from 5 mm to 10 mm.There were small amount of pericardial effusion in 4 patients using TEE examination,and no future treat was performed after observation.For one-year follow-up, all patients have recovered very well.Conclusion Percutaneous punctured transcatheter device closure fits for treatment for children with residual shunt after VSD repair and isola-ted VSD.It has a good recent result.