Objective To obtain the heavy chain variable region (VH) gene of monoclonal antibody 2F2 against Japanese encephalitis virus (JEV).Methods Total RNA was isolated with Trizol from hybridoma 2F2 cells,and cDNA of VH was amplified with reverse transcription polymerase chain reaction (RT-PCR) and sequenced.The putative VH gene was expressed in E.coli,and the expressed products was detected with enzyme linked immunosorbent assay (ELISA) to determine the activity to bind JEV.Results The VH gene was 354 bp in length which encodes 118 amino acids.Tricine-sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) showed that the VH gene was successfully expressed and purified from inclusion bodies.ELISA result also demonstrated that VH gene expressed products bind purified JEV.Conclusions The VH gene of monoclonal antibody 2F2 against JEV had been cloned.

Objective To summarize our experience in percutaneous transluminal angioplasty(PTA) in the management of thoracoabdominal aortic stenosis of Takayasu's arteritis. Methods From 1987～2001, 12 patients of Takayasu's arteritis with thoracoabdominal aortic stenosis underwent PTA. Aortography and pressure of stenotic segment of arota before and after angioplasty were used to evaluate efficacy. Color Doppler ultrasound examination and Doppler segmental pressure measurement were used in follow-up. Results Success was achieved in all cases without mortality and serious complications except for 1 case of acute thrombosis of iliofemoral artery. The residual stenosis were less than 50% in all cases and the pressure gradient was 5 0mmHg～10 5 mmHg with average pressure being 7 2 mmHg after angioplasty ,although they were 25mmHg～46 mmHg averaging of 37 7 mmHg before angioplasty. All cases were followed up for 9(12～72) months and the result was good without lumen restenosis and obstruction. Conclusions PTA is the first choice for Takayasu's arteritis of thoracoabdominal aortic stenosis of local size and proved to be safe, effectiveand economical. It is also effective for long size cases. It is not necessary to dilate aorta stenosis to normal size, and reducing pressure gradient effectively is enough.

Objective To investigate the causes of and preventive measures for complications following the placement of permanent inferior vena cava filter (VCF). Methods A total of 71 patients, with proven diagnosis of lower limb deep vein thrombosis (DVT) by Doppler ultrasonography, underwent the placement of permanent VCF from December 1999 to June 2003. Forty of the patients were acute lower limb DVT. Cavography was performed routinely during operation to confirm no thrombosis in inferior vena cava and access veins. The insertion site of filters was below the renal veins. Four types of permanent VCF were used: Titan-Greenfield filters, Simon-Nitinol filters, LGM filters and TrapEase filters. Anticoagulation treatments were used in all the cases post-VCF insertion. Results The placement of VCFs was successfully accomplished in all the cases in the study. Follow- up observations for 1～41 months revealed vena cava thrombosis at the site of insertion in 2 cases and filter tilting less than 15? in 5 cases. There were no events of filter migration, filter fracture, vessel wall perforation, filter embolism or access vein thrombosis, as well as pulmonary embolism (PE). Conclusions Different types of VCFs have different kinds of complications and their incidence rates. Preoperative ultrasonography and intraoperative cavography should be performed to evaluate the vena cava and access vein. Careful surgical management and strict anticoagulation therapy are the key to the successful VCF placement and the prevention of PE or other complications.

Summarizing the literature of syndrome differentiation and treatment of alcoholic liver disease (ALD) with Traditional Chinese Medicine (TCM) in recent five years,to investigate the realization and the laws of prescribing in this disease from the perspective of selecting drugs and forming formulas of TCM. This article summarized the characteristics of formula selection in treating ALD,and summed up the treatment principle of ALD and the realization of main syndrome by the principle of 'learning syndrome from formula','correspondence of syndrome with for mula'. The results showed that promoting blood circulation for removing blood stasis,tonifying consumption,promoting diuresis and percolating dampness were the main principle of prevention and treatment of ALD in recent years,and blood stasis,qi asthenia and phlegmatic hygrosis were the major pathogenesis of ALD. According to studying the literature of TCM,it was can be seen that the present treatment of ALD was still in the exploratory stage of clinical observation,it lacked multi-center,randomized and control prospective study of large sample,and judgment of curative effect were disunity,and objective evaluation criteria was lacked. These questions were worth further exploration.

Objective To study the clinical treatment methods for properties of unknown in elderly patients with atypical squamous cell of undertermind significant and above cervical lesions.Methods According to the clinical grouping of ASCUS in elderly patients with cervical lesions of different treatment methods,observation group 1 (348 cases) underwent colposcopy;observation group 2(316 cases) for high-risk human papillomavirus(HPV) detection,HPV positive colposcopy ;observation group 3 (129 cases) of cervical cytology examination regularly,squamous intraepithelial lesion colposcopy,compared three groups of clinical treatment.Results Liquid based cytology and three groups of 574 patients (TCT) and colposcopy and cervical biopsy,the results of intraepithelial neoplasia(C IN) above cervical lesions in 223 cases(38.9%),in which CIN Ⅰ 136 cases(23.7%),CIN Ⅱ in 64 cases(11.2%),CIN Ⅲ 20 cases(3.5%),3 cases of carcinoma in situ(0.5%) ;the group1 were observed in 348 cases,348 cases underwent colposcopy biopsy(100%),CIN Ⅱ above 36 cases(10.3%) were observed in the group 2;213 cases of colposcopy biopsy(67.4%),CIN Ⅱ above 38 cases (12%) were observed in the group 3 ; colposcopy examination in 13 cases (10.1%),3 cases of biopsy CIN Ⅱ of the cases(2.3%).Biopsy of CIN Ⅱ above the detection rate,the observation group 1,observation of the 2 groups had no significant differences(P ＞ 0.05),and observe the difference between the 3 groups was statistically significant(x2 =7.014,9.156,all P ＜ 0.05).Conclusion High-risk HPV detection of shunt ASCUS can reduce cervical lesions treatment process misdiagnosis,missed diagnosis and treatment of the problem of excessive.

0.05).The subgroup patients of the oxygenation index

Diosgenin,an important steroid sapogenin,is one of major precursors of synthetic steroids.It is rich in natural resources and has various significant activities such as anti-tumor,anti-inflammation,and cardiovascular-protection and so on.Recently,it causes increasing attention of scholars all over the world due to its valuable application in medicine.In this paper,the latest international research advances of diosgenin in its pharmacologic activities and mechanism were reviewed.

ObjectiveTo evaluate axillofemoral bypass(AxFB) for the treatment of chronic severe lower limb ischemia. Method Consecutive AxFB performed in Anzhen Hospital from January 1995 to November 2002 was retrospectively analysed, with 31 patients of aortoiliac occlusive disease undergoing axillobifemoral bypass (AxBFB) and 32 axillounifemoral bypass(AxUFB) respectively. Result On discharge, rest pain disappeared in 44 cases and intermittent claudication in 19 cases, with average ankle/brachial index changing from preoperative 0.18(0～0.49) to postoperative 0.68(0.29～1.04). Rate of limbs salvage was 87.4%, amputation rate was 7.9%. Three cases died with a perioperative mortality of 4.8%. The patency rate of 1,3,5 years were 93.2%,79.8% and 64.1%, respectively. Conclusion AxFB for aortoiliac occlusive disease is considered to be acceptable procedure in high-risk patients with poor femoral run-off and chronic critical lower limb ischemia.

Objective To assess the efficiency,safety and indications of permanent inferior vena cava filters (VCF) placement for prevention of pulmonary embolism in cases of deep vein thrombosis (DVT). Method In this study 71 cases were treated with permanent inferior vena cava filters by way of the internal jugular vein and the common femoral vein. Cavography was performed routinely before inserting the VCF to confirm no thrombosis in IVC and access veins. The insertion site for filters is the subrenal vena cava. Results The procedure was successful in all cases. There was no case of symptomatic PE occurred during 1～41 months of follow-up. There were 2 cases of IVC thrombosis at the site of insertion and 5 cases of filter tilting less than 15?. There were no other complications. Conclusion Permanent IVC filter placement is an effective method for preventing fatal PE due to DVT. Imaging of the vena cava and access vein by venous ultrasound and cavography, strict anticoagulation therapy after VCF insertion are key to perform VCF placement, provide protection from recurrent life-threatening PE and reduce complications. The filter placement indications should be strict.

Objective To evaluate endovascular therapy and open surgery for subclavian artery occlusion disease. Methods In this study, 69 patients received endovascular therapy (44 patients)or open surgery(25 patients)from January 2002 to July 2007.Balloon dilatation was carried out in 3 cases and 43 stents was placed in 41 cases. Results All procedures were successful. In endovascular therapy group, the ratio of healthy/dieased side of mean blood pressure was improved from 0.66±0.14 to 0.96±0.13(t=9.532,P＜0.001＝;in surgery group, the ratio improved from 0.63±0.16 to 0.95±0.18(t=8.236,P＜0.001＝.Sixty-one discharged patients were followed up for 2～49 months(mean 16.7 months),in endovascular group, restenosis occurred in 1 patient 1 year after the therapy, in surgery group, all prothesis remained patent and there was no complication related to prothesis. Conclusions Both endovascular therapy and surgery were the effective methods for subclavian artery occlusion, and endovascular therapy is preferred for less invasiveness.