Objective To explore the feasible of diagnosing ischemic cerebrovascular diseases by detecting central retina artery sclerosis(CRA) with color Doppler ultrasonography.Methods210 patients with ischemic cerebrovascular disease(420 eyes) and 80 healthy volunteers(160 eyes) were examined by color Doppler flow imaging(CDFI) to detect double sides blood frequency spectrum of CRA and hemodynamic parameters of CRA including peak systolic velocity(PSV),end of diastolic velocity(EDV)and resistant index(RI).ResultsThe blood frequency spectrum of CRA showed three apices and two vales or slanting triangle in healthy volunteers.But in patients with ischemic cerebrovascular disease,the blood frequency spectrum changed,and PSV and EDV were slower and RI increased compared with those in the healthy volunteers(PP<0.05～0.001).ConclusionIn patients with ischemic cerebrovascular disease,the blood flow of CRA is slower and RI increases compared with health individuals.The color Doppler ultrasonography can used for diagnosis of CRA sclerosis.

Objective To investigate role of reverse digital artery island flap combined with dig- ital nerve end to side anastomosis.Methods Reverse digital artery island flaps were used for recon- struction of 65 fingertip defects in 57cases,in which the restoration of the flap sense was attained via dig- ital nerve end to side anastomosis.Results After primary repair,all flaps survived,with good appear- ance and wear-resisting as well as satisfactory two-point discriminations.Conclusion Digital artery re- verse island flap combined with digital nerve end to side anastomosis is a simple and effective procedure for repair of finger defect.

Objective To discuss the Clinical character of pulmonary tuberculosis combined malignant lymphoma and its Pathogenesis,and to review the literature.Methods Eighteen cases of pulmonary tuberculosis combined malignant lymphoma from 1996 to 2003 were retrospectively analyzed by its clinical manifestations,X-ray features,diagnosis and treatments.Results 18 cases were all infiltrative pulmonary tuberculosis,13 them were calcification focals,5 were active pulmonary tuberculosis;5 of all were Hodgkin’s lymphomas,13 of all were non-Hodgkin′s lymphomas.16 cases were lymphomas after tuberculosis,2 cases tuberculosis after lymphomas,none were co-existent malignant lymphoma and tuberculosis.Tuberculosis may precede or complicate a lymphomatous process during the development of both diseases,This might is linked to immune deficiency and chronic inflammation;Lymphomas might cause pulmonary tuberculosis,it might cause the immune turbulence of an individual,Pulmonary tuberculosis infection occurring during or after the radiotherapy and chemotherapy of lymphoma.Conclusions It may pulmonary tuberculosis combined malignant lymphoma in the patients in the endemic areas of tuberculosis,Appropriate invasive biopsy procedures are necessary for early diagnosis.

The paper is aimed to establish a method of residue analysis for thiamethoxam and to study its degradation dynamic and final residue and its standard of safe application of thiamethoxam on Lonicera japonica. Samples extracted with methanol by ultrasonication were purified with dichloromethane by liquid-liquid extraction and SPE column and analysed by HPLC-UV. The results showed that average rate was 84.91%-94.44% and RSD 1.74%-4.96% with addition of thiamethoxam in respectively diverse concentration, which meets inspection requirement of pesticide residue. Two kinds of dosages of thiamethoxam were treated- varying from recommended dosage (90 g x hm(-2)) to high dosage (135 g x hm(-2)), Results of two years test showed that thiamethoxam was degraded more than 90% seven days after application and the half - life period of thiamethoxam was 1.54-1.66 d. The digestion rate of thiamethoxam was fast in the L. japonica. The recommended MRL of thiamethoxam in the L. japonica is 0.1 mg x kg(-1), the dosage of 25% thiamethoxam WDG from 90-135 g x hm(-2) is sprayed less than three times a year on L. japonica and 14 days is proposed for the safety interval of the last pesticide application's and harvest's date.
Agriculture ; methods ; standards ; Chromatography, High Pressure Liquid ; Flowers ; chemistry ; growth & development ; parasitology ; Half-Life ; Insect Control ; methods ; standards ; Insecticides ; adverse effects ; chemistry ; Lonicera ; chemistry ; growth & development ; parasitology ; Neonicotinoids ; Nitro Compounds ; adverse effects ; chemistry ; Oxazines ; adverse effects ; chemistry ; Pesticide Residues ; adverse effects ; chemistry ; Plant Diseases ; parasitology ; prevention & control ; Thiazoles ; adverse effects ; chemistry

Objective To study the clinical outcomes of titanium-coated interbody fusion system in treating lumbar isthmic spondylolisthesis.Methods A retrospective study was made in 22 cases with lumbar isthmic spondylolisthesis including 15 with degree I spondylolisthesis and seven with degree II spondylolisthesis treated by posterior lumbar interbody fusion using titanium-coated fusion cages from June 2002 to December 2003 in our hospital.There were six males and 16 females,with age range of 41-68 years(mean 52.5 years).In all cases,double cages were implanted with additional posterolateral bone graft,supplemented with pedicle screw systems.The average preoperative and postoperative disc space height,foraminal height,segmental and lumbar lordosis,spondylolisthesis and domain of sagittal rotation on flexion-extension radiographs were measured and fusion state observed.The Oswestry disability index (ODI)was used to evaluate the clinical outcome.Results The fusion rate was 95.4%.There was significant recovery of disc space height,foraminal height and domain of sagittal rotation.ODI decreased significantly.Conclusion The anatomic titanium-coated fusion system is effective and safe in treatment of lumbar isthmic spondylolisthesis because it has advantages in restoring sagittal alignment and keeping bony endplate intact.

By non-steady method,the effective diffusivity of ferrous sulphate within alginate calcium gel entrapped without bacteria was measured.Meanwhile the oxidation ability of entrapped bacteria was analyzed.Experimental results showed that the effective diffusion coefficient of ferrous sulphate decreased with the increase of alginate concentration,the optimum alginate concentration is 2%(W/V).The effect of calcium chloride on the effective diffusivity was neglectable.The incubation of ferrooxidans would pass through 10 hours,and the diffusion coefficient within gel entrapped Thiobacillus ferrooxidans cells was less remarkably than that of ferrous sulphate without entrapped cells.For the entrapped cells,the absolute oxidation time was shortest and the rate change was fastest with the initial Fe concentration 5g/L.The absolute oxidation time was same when the initial Fe concentration was 8g/L and 10g/L.

Objective To research whether the polyunsaturated fatty acids (PUFAs) level in prenatal and postpartum women af‐fect the incidence of postpartum depression .Methods 102 eligible and voluntary parturients of full‐term normal delivery were se‐lected and the serum specimens before labor and on postpartum 3 ,42 d were respectively collected for detecting serum PUFAs lev‐els .The perinatal depression related factors questionnaire and the Edinburgh Postnatal Depression Scale (EPDS) were filled in and the scores were evaluated for analyzing the incidence of postpartum depression .Results Among 102 pregnant women and parturi‐ents ,the postputum depression appeared in 28 cases with the positive rate of 27 .5% .The incidence rate of postpartum depression in the eicosapentaenoic acid (EPA) low values group and the docosahexaenoic acid (DHA) low and medium values groups was higher than that in the high values groups ;the incidence rate of postpartum depression in the arachidonic acid (AA) high value group was the higher than that in the low value group .Conclusion The lower the EPA and DHA levels ,the easier to develop depression .

Objective To analyze magnetic resonance images of medulloblastomas and ependymomas by texture analysis method, and evaluate the texture characteristics of two tumors by support vector machine (SVM).Methods 58 tumors were analyzed retro-spectively,including 31 medulloblastomas and 27 ependymomas,which had been confirmed with operation and pathology.Texture analysis was performed onthese tumors.Results The 5 texture parameters extracted from the gray level co-occurrence matrix and at least 3 parameters which had statistical significance between the two different classes of data sets(P<0.05).For all data sets,the variance parameters of gray value of ROI region have statistical significance.The accuracy of SVM test was (86.15±4.16)%,which had remarkable significance between the ependymomas and medulloblastomas.Conclusion The analysis of texture features can pro-vide a lot of quantitative information,and can be a potential method for the differential diagnosis of medulloblastomas and ependy-momas.

Objective To explore the value of MRI histogram analysis in the risk assessment of medulloblastoma recur rence.Methods The data of 28 patients pathologically confirmed of medulloblastoma was analyzed retrospectively.All patients were divided into recurrent group and the non recurrent group (each n=14).The ROIs were drawn on the maximum level of enhanced MR sagittal images,and the histogram analysis were performed using the software named Mazda.The statistical analysis was performed on the histogram parameters to find out the different characteristics between the two groups,and the ROC curve was drawn to evaluate its diagnostic efficacy for recurrence of medulloblastoma.Results In all of the 9 parameters which are extracted from histogram,kurtosis had statistical significance between the 2 groups (P=0.018).The area under the ROC curve was 0.776 (P=0.018),and the sensitivity and specificity of kurtosis in the risk assessment of medulloblastoma recurrence were 64.3％ and 71.4％,respectively.Conclusion MRI histogram analysis can be an important method to assess the risk of medulloblastoma recurrence.

Objective To explore the correlation of E-cadherin(E-cad) mRNA expression with tumorigenesis and development of lung cancer.Methods The relative quantitative nested RT-PCR was used to detect the expression of E-cad mRNA in cancerous tissues,adjacent and distal tissues of tumor from 50 lung cancer patients,and non-cancerous benign lung tissues from 5 lung disorder patients.Results The means of expression rate of E-cad mRNA in cancerous tissue,adjacent and distal tissues of tumor,and non-cancerous tissues were 1.33?0.53,1.65?0.60,2.01?0.46 and 2.09?0.09 respectively.The data were evaluated by analysis of variance.There were significant difference among cancerous tissue,adjacent and distal tissue(F=18.810,P0.05).Also,there were no significant differences among squamous cell carcinoma,adenocarcinoma and adenosquamous carcinoma in the group of cancerous,adjacent and distal tissue.Conclusion The reduced expression of E-cadherin mRNA may play important role for tumorigenesis and development of lung cancer,and there was no evident relationship of E-cad mRNA with different pathological types of lung cancer.