Along with the transgenic plant planting more and more popular in the world,the influence of transgenic plants on ecological environment was widely given attention and the comprehensive research had been done on effect of transgenic plants in soil ecosystems.The latent risks of transgenic plants to the soil ecosystem were reviewed.Also,the study on decomposition of transgenic plants in soil,the vertical and horizontal transfer possibility of recombinant DNA by transformation,as well as the influence of the exogenous gene and its expression product on soil animals,soil microbes as well as soil physical and chemical properties were also discussed,all of which would provide useful information for utilization of transgenic plants more safely in future.

China ; Curriculum ; Education, Dental ; Oral Medicine ; education

BACKGROUND:Catheter associated urinary tract infection is a difficult problem for clinical practice management, and its key pathogenesis is the bacterial biofilm formation on the surface of the catheter material. Therefore, developing a new anti-infective urinary catheter has become an area of interest in the current studies of anti-infective biological materials. OBJECTIVE:To review the research literatures on anti-infective urinary catheter, and provide a direction for further study and clinical application. METHODS:Al related Chinese patent papers of anti-infective urinary catheters were retrieved by Google’s proprietary search platform (http://www.google.com/advanced_patent_search) until the deadline of March 26, 2014, with the search strategy of‘Return the patents with the fol owing proprietary name:urinary catheter’. RESULTS AND CONCLUSION:According to the predefined search strategy, 949 potential y relevant patent papers were screened out for further identification, and 23 papers referred to anti-infective catheters that were obviously eligible were included. The analyses showed that:(1) The antibacterial coating agents of the majority of papers were antibacterial agents of nano-inorganic metal cations, only four papers used antibiotic coated. (2) The drug-eluting catheters were mainly composite-coated. (3) The drug release modes from coating were mainly extended-release but release mechanism was not clarified. (4) The preparation process was chemical bond or ionic bond in one paper, blending methods in one paper, repeated electroplating in one paper, electrospinning technology in one paper, and physical impregnation methods in 12 papers (52.17%). (5) The antimicrobial mode was ultrasonic-antibacterial method in two patent papers, sterile sleeve in one paper, hydrophilic coating in one paper, catheter made by blending polymer material and anti-infective agents in one paper, drug coated films made by coating with antimicrobial drug liquid and drying process in 20 papers (82.61%). In conclusion, there have been no translational and applied clinical researches about the anti-infective urinary catheter, and the relevant researches were only at the laboratory level. The research methods of Chinese patent for anti-infective urinary catheter were limited, and need to be further improved.

Objective To investigate the changes of the intervertebral angle and retrolisthesis of the last instrumented vertebrae (LIV) after anterior correction and instrumentation in adolescent idiopathic scoliosis patients. Methods By reviewing the medical records and roentgenograms of adolescent idiopathic scoliosis patients who underwent anterior correction and instrumentation in recent 4 years, their Cobb angle of the curve, correction rate, trunk shift, LIV rotation, obliquity between LIV and the pelvis, intervertebral angle and retrolisthesis of the LIV were measured and analyzed. Results There were total 50 patients included. The apex of the main curve was located at thoracolumbar junction or lumbar spine. The coronal Cobb angle of the main curve were 47.78??9.39? and 10.32??8.50? before and after surgery respectively, with an average correction rate of 79.05%. The average rotation of LIV before surgery was 1.54??0.58?, and improved to 1.06??0.47? after surgery. The obliquity between LIV and the pelvis before and after surgery were 23.80??7.91? and 9.16??9.46? respectively. The intervertebral angle was 3.72??3.05? before surgery, and -2.22??5.85? on Bending films, 1.56??5.97? after surgery respectively. The changes were of significance in the intervertebral angle after surgery compared with that before surgery(P=0.029). The angle was 4.87??7.95? at final follow up, the change was also significant compared with that after surgery(P=0.038). 19 patients had LIV retrolisthesis postoperatively, and the average retrolisthesis distance was (4.79?1.75) mm. There were significant differences between the patients with retrolisthesis and the patients without retrolisthesis in apical vertebral rotation and intervertebral angle on Bending films(P=0.047 and P=0.033) respectively. Conclusion The intervertebral angle is much improved after anterior correction and instrumentation surgery, but it increases gradually at follow up. The retrolisthesis of LIV may be correlated with the apical vertebral rotation before surgery and the intervertebral angle on Bending films.

Objective To investigate methods and effect of preventing hemorrhoea when superior position sacral tumor was resected.Methods 36 patients with superior position sacral tumor were operated by excision of presacral tumor from May 2000 to May 2007.14 cases were performed with double hypogastric artery ligation.Hy- pogastric arteries were embolismed temporarily through intervention in 7 cases and permanently in 10 cases.Distal end of abdominal aorta was placed with sacculus in advance in 5 cases.Average volume of blood was calculated ac- cording to different methods of preventing blood.Results Blood loss was 500～2000ml(average 1100ml)by hy- pogastric artery ligation.Blood loss was 600～2100ml(average 1200ml)by temporary double hypogastric arterial em- bolism while blood loss was 550～1900ml(average 1150ml)by temporary embolism.Blood loss was 200～1000ml (average 560ml)by placing sacculus in advance at distal end of abdominal aorta.Conclusion Hemorrhoea may be prevented completely through temporarily or temporarily reducing blood supply of pars sacralis when sacral tumor was resected.Especially,it is a best method when distal end of abdominal aorta was placed with sacculus in advance.

With the development of industrialization,the problem of oil-contamination to the soil is getting more and more serious.How to clear up or remove the oil-contaminants from the soil becomes an important environmental problem for all countries around the world.Bioremediation,as the methods with fast and safe in processing,low cost and non-secondary contamination,is becoming the main solution to soil environment by oil contamination.Biostimulation and bioaugmentation are most commonly used techniques in bioremediation.The theory of bioremediation,including the concept and method of biostimulation and bioaugmentation were introduced,and advance study and progress in this field from the world in recently years were demenstrated.Both of the two methods can lead a significant decrease in soli TPH content,but the efficiency relates to many factors.Accordingly,the bioremediation technique should be tailored specifically to each polluted site.

Objective To retrospectively analyze the clinical effect of 131 I in the treatment of hyperthyroid heart disease.Methods 269 cases who received nuclear medicine 131 I therapy for hyperthyroid heart disease were selected.Clinical laboratory and related examinations,including determination of serum thyroid hormones and antibod-ies (FT3 ,FT4 ,TSH,TRAb,TGAb and TPOAb),biochemical indicators,analysis of blood,electrocardiogram,thyroid ultrasonography,thyroid 131 I uptake rate determination,static imaging and color Doppler ultrasound of the heart were condutced.After diagnosis clear integrated touch technique,thyroid color Super and the thyroid static imaging deter-mine thyroid weight.131 I dose by following formula calculation determine:131 I dose =(each grams thyroid plans vol-ume)×thyroid weight (g)/thyroid 24h or highest 131 I rate (%),each grams thyroid plans volume for 2.96-4.44MBq,calculation 131 I dose,application SPSS 17.0 statistics software for statistics,used paired t test to analyze serum hormone levels of FT3 ,FT4 ,sTSH before treatment,3,6 and 12 months after treatment.Results After 131 I treatment 3,6,12 months,serum FT3 ,FT4 ,sTSH levels significantly declined compared with before treatment (t =36.03,23.88,17.81,45.01,24.85,13.95,49.97,25.66,10.28,all P <0.01).Of 269 patients received 131 I treat-ment,hyperthyroidism cured in 220 cases (81.8%),improved in 42 cases (15.6%),invalid in 7 cases (2.6%);hyperthyroidism heart recovered in 226 cases (84.0%),effective rate was 97.0%(261 /269).Conclusion The treatment of hyperthyroid heart disease as soon as possible is the key to control hyperthyroid,reduced thyroid hormone in the peripheral circulation,131I can be fast and effective treatment of hyperthyroidism,hyperthyroid abnormal ECG and cardiac anomalies symptom relief for time is the ideal treatment of hyperthyroid heart disease recovery as soon as possible,with normal thyroid function,hyperthyroid can return to normal or part of normal.

ObjectiveTo compare and observe the clinical effect of Qizhengxiaotong plaster and Votalin emulsion in curing osteoarthritis of knee (KOA) for outpatient treatment.MethodsIn 70 cases,the KOA patients are randomly divided into treatment group and control group,respectively given Qizhengxiaotong plaster plus Xianling Gubao and Votalin emulsion for one month.To observe the clinical effects of patients respectively pre and post treatment.ResultsAfter a course of treatment,Qizhengxiaotong plaster plus Xianling Gubao could improve the clinical symptoms and signs significantly.Its improvement for pain was the same as Votalin.But Qizhengxiaotong plaster plus Xianling Gubao was significantly better than Votalin in eliminating the swollen,tenderness and dysfunction.And there was no obvious difference between Qizhengxiaotong plaster plus Xianling Gubao and Votalin emulsion in total effective rate,evaluated by WOMAC Osteoarthritis Index Guide and VRS-5.The typical symptoms were improved after the therapeutic method.No adverse reaction was found during the treatment.ConclusionQizhengxiaotong plaster plus Xianling Gubao had obvious effect on the osteoarthritis of knee and could improve the patients' pain and limitation of activity.Hence,it was worthy to be generalized in the conservative treatment of the osteoarthritis of knee for out-patients.

Adult ; Female ; Hamartoma ; Humans ; Nasopharyngeal Diseases ; Nasopharynx ; pathology