Herbicides ; poisoning ; Humans ; Paraquat ; poisoning ; Poisoning ; metabolism ; pathology ; therapy

Adult ; Arterio-Arterial Fistula ; therapy ; Cardiac Catheterization ; Coronary Vessels ; pathology ; Heart Ventricles ; pathology ; Humans ; Male

Objective: To evaluate the effects of stent implantation for treatment of Budd-Chiari syndrome. Methods:A total of 16 patients with pasthepatic inferior vena cave (IVC) obstruction syndrome were treated by balloon catheters ( Polythene and Inoue ) in percutaneous transluminal angioplasty (PTA) , then stent were inserted into the obstruction. Results: The residual pressure gradient after PTA and stent implantation was decreased from (4.6?0. 3 ) kPa to (2. 1?0. 1) kPa. The diameter of IVC after PTA and stent implantation was increased from (3.8?1. 7)mm to (14. 9?2. 0)mm. Conclusion : PTA and stent implantation are effective treatment for pasthepatic inferior vena cave obstruction.

Objective: To evaluate the effects of percutaneous balloon pulmonary valvuloplasty ( PBPV) for pulmonary valve stenosis (PS) by single-balloon, double-balloon and Inoue-balloon methods. Methods: PBPV was performed in 42 patients with PS. The systolic right ventricular pressure (SRVP) , systolic right ventricular outflow pressure and systolic pulmonary arterial pressure ( SPAP) were contrasted before and after the procedure. Systolic transpulmonary valve pressure gradient (TVPG) and total pressure gradient from right ventricular to pulmonary arterial after the procedure were compared among the three gropes. Results:SRVP, SRVOP were decreased from (14. 69?6. 01 )kPa, (12. 16?3. 48)kPa to (8.14?5.26)kPa, (5.39?2.21)kPa and PAP increased from (1.57?0.56)cm to (17. 16? 2.16)cm after PBPV, respectively. TVPGs were (2. 40?2. 05) kPa, (3. 29?2. 25 ) kPa, (2.52? 1.95)kPa and TPGs were (2. 40?2. 05)kPa, (4.98?4.26)kPa, (6.16?6.93)kPa, (5.65?4.75) kPa after PBPV by single balloon, double balloon and Inoue balloon methods, respectively. During the follow-up period (2. 5?1. 6) years, bloodflow velocity at pulmonary valve measured by supersonic Doppler decreased from (2. 38?1. 89) m/s immediately after PBPV to (2.22?1. 96) m/s, further TVPG decreasing was indicated. Conclusion: The short and long term results of PBPV for PS by each of the three methods were excellent. Inoue balloon may be the first choice for elder children and adults, while for younger children, single balloon method may be preferred. Double balloon method can be remained as the second choice when Inoue method failed.

Objective To develop a computer-aided diagnosis(CAD)system with automatic contouring and morphologic and tex-tural analysis to aid on the classification of breast nodules on ultrasound images .Methods A modified Level Set method was pro-posed to automatically segment the breast nodules(46 malignant and 60 benign nodules) .Following ,16 morphologic features and 17 texture features from the extracted contour were calculated and principal component analysis(PCA)was applied to find the optimal feature vector dimensions .Fuzzy C-means classifier was utilized to identify the breast nodule as benign or malignant with selected principal vectors .Results The performance of morphologic features was 78 .30% for accuracy ,67 .39% for sensitivity and 86 .67%for specificity ,while the latter was 72 .64% ,58 .70% and 83 .33% ,respectively .After the combination of the two features ,the re-sult was exactly the same with the morphologic performance .Conclusion This system performs well in classifying the malignant breast nodule from the benign breast nodule .

Objective To investigate the safety and obtain parameters of microeoagulation of dorsal root entry zone (DREZ) of cervical cord with bipolar foreps on animal model,and provide histological base for clinical application of treatment of brachial plexus avulsiol pain using microcoagulation of dorsal root entry zone.Methods On the base of swine's weight and spinal cord size in similar to human being,it was chosen to be experimental animal.The right DREZs of cervical cord were microcoagulated with bipolar forceps.The swines were fed in normal way.Their activities were observed.The mass change of the cervical cord segment were observed after 3 weeks and the cervical cord segment was fixed with 10% fromalin,paraffin sliced,HE dying.Coagulating space,depth and width were measured under microsope.The coagulating parameter were adjusted according to measuring outcome in order to achieving a most avaliable parameter.Results All post-op swine survived.When the microcogulation were made with bipolar forceps adopted following parame- ters:The distance of between the polar was 2.0 mm;The diameter of polar was 0.3 mm.The inserting depth 2 mm,the coagulated power 18 watt,the coagulated time was 2 second,then the width of lesions of DREZ in cross section was 1.15 mm and the depth of lesions was 3.10 mm,which was consistent with the area of hu- man DREZ of cervical cord.Conclusion The experiment on swine suggested,microcoagulation of DREZ by bipolar forceps is safe and no mortal complications when the testified parameters are adoped,and can achieve the area of DREZ of cervical cord in human.

In this paper 3 different media (A,for yeast cultivation ; B, for laccase producing; D, for white rot fungi cultivation) were compared in enriching and screening decolorizing fungi culture using Reactive Black 5 (RB5) and Reactive Red (M-3BE) from the following three points: decolorization effects, abilities of producing enzymes and diversity of microbial community. 11 groups of fungi with obvious decolorization effects were obtained after enrichment for near one month. Among them, 6 groups came from medium D, the other two 3 groups from medium A and B, respectively. However, the 3 groups from medium A exhibited the highest microbial diversity and best decolorization results with 99.53% and 97.42% color removal rate of Reactive Red M-3BE and Acid Red. From them, 16 strains of fungi were isolated and primarily identified as Saprolegniaceae, Eurotiaceae (Monascus went), Erysiphaceae and Physodermataceae. Fungi groups from medium B and D exhibited a bit lower color removal rate of various dyes and only 3 and 2 isolates primarily classified as Saccharomycetaceae and Eurotiaceae (Penicillium) were obtained from them. Fungi cultures in medium A and B could produce lignin peroxidase, and those in medium D could be detected higher activity of laccase. All the fungal cultures exhibited very weak activity of manganese dependant peroxidase.

Objective： The current study was designed to evaluate the treatment results of nasopharyngeal carcinoma by conformal radiotherapy. Methods： From September 1997 to February 2000, a total of 41 cases of recurrent nasopharyngeal carcinoma were treated by conformal radiotherapy. Among them, 27 cases were treated by late-course hypofraction conformal radiotherapy with the dose of 20- 24 Gy at 80％ isodose, 4- 7 Gy per time, following routine radiotherapy of 39 Gy/30f/3weeks. Fourteen cases received total-course conformal radiotherapy with the dose of 59.8 Gy/46f/4.6weeks at 90％ isodose. Results： The reference isodose curves conform to the target in three dimensions in conformal radiotherapy. The acute radiation mucositis, cranial nerve paralysis and trismus incidence were similar in two groups, however, in the hypofractionation group 22％ developed necrosis of nasopharyngeal mucosa, 3.7％ developed reduced optic nerve lesion, whereas none of the hyperfractionation group had these complications. The tumor response rate were both 93％ for two groups. Conclusion： Hyperfraction conformal radiotherapy is effective in the treatment of recurrent nasopharyngeal carcinoma and has relatively lower incidence of radiation complication.

Objective To investigate the value of the bedside index for severity in acute pancreatitis (BISAP),Ranson's,APACHE Ⅱ and computed tomography severity index (CTSI) scoring system in evaluating the severity of acute pancreatitis.Methods The clinical data of 385 patients with acute pancreatitis who were admitted to the Zhongnan Hospital of Wuhan University from 2005 to 2011 were retrospectively analyzed.The values of 4 scoring systems including BISAP,Ranson's,APACHE Ⅱ and CTSI in predicting the incidences of severe acute pancreatitis,local complications and death were investigated by Chi-square test and receiver operating characteristic curv e.Odds ratio (OR) was calculated.The differences of areas under the curves (AUC) were analyzed using the Z test.Results The incidences of severe acute pancreatitis,local complications and mortality of patients with BISAP score ≥ 3 were 64.4％ (56/87),16.1％ (14/87) and 8.0％ (7/87),which were significantly higher than 13.4％ (40/298),6.4％ (19/298) and 0.3 ％ (1/298) of patients with BISAP score ≤ 2 (x2 =93.4,8.1,19.7,P ＜ 0.05).The incidences of severe acute pancreatitis,local complications and mortality of patients with Ranson's score≥3 were 52.7％ (48/91),22.0％ (20/91) and 7.7％ (7/91),which were significantly higher than 16.3％ (48/294),4.4％ (13/294) and 0.3％ (1/294) of patients with Ranson's score ≤2 (x2 =49.2,27.3,18.5,P ＜0.05).The incidences of severe acute pancreatitis,local complications and mortality of patients with APACHE Ⅱ score ≥ 8 were 46.6％ (27/58),20.7％ (12/58) and 8.6％ (5/58),which were significantly higher than 21.1％ (69/327),6.4％ (21/327) and 0.9％ (3/327) of patients with APACHE Ⅱ score≤7 (x2 =17.0,12.8,14.4,P ＜0.05).The incidences of severe acute pancreatitis,local complications and mortality of patients with CTSI score ≥4 were 51.4％ (19/37),51.4％ (19/37),16.2％ (6/37),which were significantly higher than 22.2％ (77/347),4.0％ (14/347),0.6％ (2/347) of patients with CTSI score≤3 (x2 =15.1,95.3,40.1,P ＜ 0.05).The sensitivity,specificity,positive and negative predictive values of BISAP were 58％,89％,64％,86％,respectively,and the AUC was 0.848,which were significantly higher than the other 3 systems (Z =2.02,4.22,4.78,P ＜ 0.05).The sensitivity,specificity,positive and negative predictive values of CTSI were 58％,95％,51％ and 96％,respectively,and the AUC was 0.926,which was significantly higher than the other 3 systems (Z =3.99,3.24,4.06,P ＜ 0.05).The sensitivity,specificity,positive and negative predictive values of BISAP were 88％,79％,8％ and 100％,respectively,and the AUC was 0.855,with no significant difference compared with the other 3 systems (Z =0.81,0.03,0.14,P ＞ 0.05).Conclusions The accurate rate of BISAP in predicting the severe acute pancreatitis is higher than Ranson's,APACHE Ⅱ and CTSI.The accurate rate of CTSI in predicting the incidence of local complications is higher than the other 3 systems.There is no significant difference of the 4 systems in predicting the mortality.The BISAP scoring system is helpful in early diagnosis of severe acute pancreatitis,and making the individualized treatment plan,thus improving the prognosis of patients.

Objective To study lymph node micrometastasis in N0 colorectal cancer patients and its clinical significance. Methods In this study, 548 lymph nodes obtained from 62 cases of No colorectal cancer undergoing curative operation were examined by fluorescent quantity polymerase chain reaction assay for the expression of cytokeratin 20 (CK20) mRNA. Results Micrometastasis was detected in 55 lymph nodes (10.0% ) of 24 cases (39%). According to lymph node anatomical locations, micrometastasis was identified in 15. 8%, 5.0% and 3.3% lymph nodes in group Ⅰ ,Ⅱ and Ⅲ (grouped by the distance from the tumor), respectively. Micrometastasis was correlated with invasion depth of primary tumor, but was notrelated to gender, age, tumor size, tumor site and differentiation. Conclusions The expression of CK20mRNA in lymph nodes in patients with No coloreetal cancer could be used to improve the accuracy of clinical staging, and provide information for rational adjuvant therapy.