Objective To investigate the occurrence, progress and conversion of hypotony in anterior proliferative vitreoretinopathy (aPVR), and to provide knowledge about how to prevent and treat it. Methods Animal models of chronic hypotony by aPVR were made with cultured homologous dermal fibroblasts on pigmented rabbits. The intraocular pressure (IOP) and ultrasound biomicroscopy(UBM) examination were taken preoperatively and on days 7,14, 28 and 56 postoperatively. Rabbits were killed on days 14, 28 or 56 postoperatively, prepared for histology and ultrastructure examination. Results The average IOP of experimental group was lower than that of control group on days 7,14,28 and 56 significantly (P

Objective To study the dynamics of aqueous humor in chronic hypotony induced by traumatic anterior proliferative vitreoretinopathy (aPVR), and to demonstrate physiologic mechanisms of the hypotony. Methods A model of hypotony to simulate traumatic aPVR was reproduced in rabbits. Preoperatively and on day 7, 14, 28 and 56 postoperatively, the aqueous humor flow rate and the uveoscleral outflow of aqueous humor were determined. Results The flow rate of aqueous humor in experimental group was reduced remarkably compared with that of control group on days 14, 28 and 56 (P

Objective To study the occurrence, development and outcome of hypotony following traumatic anterior proliferative vitreoretinopathy (aPVR), so as to provide a theoretical basis for its prevention and treatment. Methods An animal model of chronic hypotony following traumatic aPVR was reproduced in rabbits. The intraocular pressure (IOP) was measured before the experiment and on days 7, 14, 28 and 56 after the injury. Rabbits were killed on days 14, 28 and 56 after the experiment, prepared for pathological and ultrastructure examination. Results The average IOP of experimental group was significantly lower than that of control group on days 7, 14, 28 and 56 (p

To investigate the effectiveness and safety of systemic administration of high dose urokinase for acute central retinal artery occlusion (CRAO). 6 patients who had unilateral CRAO with symptoms lasting 6 hours to six days' (average, 3 7 days) received intravenous urokinase, 500,000U / day, with a total dose of 2,500,000U. Each urokinase delivery was followed by in travenous low molecular weight Dextran, 500ml / day, and Ginaton 87 5 mg / day, for 10 days. The treatment also included anterior chamber paracentesis, ocular massage, oral acetazolamide, sublingual isosorbide dinitrate, and inhalation of carbogen ( 95% oxygen, 5% carbon dioxide ). Visual acuity and ocular findings were recorded before and after treatment. Duration of follow up ranged from 4 to 12 months. After first intravaneous urokinase, visual acuity was slightly improved in five of the 6 patients, and no change in one patient. All 6 patients showed markedly improved vision at discharge, with vision better than 0 05. At the final visit, visual acuity reached 0 1 in all the 6 patients, and in four patients visual acuity was improved to 0 2 or better, two patients had vision recovered even to 1 2 and 1 5, respectively. During treatment no serious complications were noticed. These results indicate that systemic treatment for acute central retinal artery occlusion with high dose urokinase could help reestablish retinal circulation and improve vision.

Objective　To make a preliminary analysis of orthokeratology(OK) for treating myopia.Methods　OK lenses were chosen to treat myopia with or without astigmatism according to the myopia characterizations, then changes of their visions, refractions, corneal curvature and eccedtricities after being treated for ld, 1、2、3、4 weeks were observed once every 4weeks and were followed up for 18 months.Results　Significant changes were observed after being treated. Slight myopia: the diopters decreased-2.75D±0.50D,the horizontal meridians flattened 1.64±0.21, the vertical 0.92±0.27 and the eccedtricities declined 0.47±0.11; Middle myopia: the diopters decreased -5.50D±0.75D,the horizontal meridians flattened 2.16±0.45, the vertical 1.61±0.67, and the eccedtricities declined 0.38±0.07; High myopia:the diopters did -6.75D±0.50D,the horizontal did 3.86±0.56, the vertical 2.97±0.67 and the eccedtricities did 0.32±0.10. The predicabilities of slight and middle myopia were superior to high myopia's.Conclusion　Orthokeratology is a non-traumatic therapy and the clinical application should be careful and scientific.

Objective:To compare the effects of repetitive transcranial magnetic stimulation (TMS) at three different relatively high frequencies on neuropathic pain so as to find the best frequency.Methods:One hundred Sprague-Dawley rats were randomly divided into a sham operation group, a model group, a TMS group and a control stimulation group. The TMS group was further divided into a 5Hz group, a 10Hz group, and a 20Hz group. The rats in the model, control stimulation and TMS groups received constriction injury of the sciatic nerve, while the rats in the sham group were given a sham version of the operation. On the third day after the operation the rats in the TMS group and the control stimulation group began to receive TMS treatment. Neuropatic pain was evaluated on the day before the operation, and on the 3rd, 5th, 7th, 10th and 12th days after the operation. The evaluations included the paw withdrawal thermal latency (PWTL) and the paw withdrawal mechanical threshold (PWMT).Results:The average PWTLs and PWMTs in all of the TMS groups increased with the TMS treatment. Those of the 10Hz and 20Hz groups were significantly higher than the 5Hz group′s average, while there were no significant differences between the 10Hz group and 20Hz group.Conclusions:High-frequency TMS at different frequencies has different effects on neuropathic pain, at least in rats. The treatment efficacy at 10 and 20Hz is superior to that at 5Hz.

0bjective To investigate the serum total bilirubin level of healthy population in northwest area of China.Methods According to the guiding principle and the screening standard of C28-P3,722 individuals conforming to the screening standard from October 2011 to January 2012 were collected.Serum total bilirubin was determined with diazo reagent method(Roche)on the P module of Hitachi 7600 automatic biochemistry analyzer,and the vanadate reagent method(WAKO)on the D module of the Hitachi 7600 automatic biochemistry analyzer,respectively.The detection results were analyzed between different analysis systems,between country and city and among different age groups by SPSS13.0.The top and bottom limitations of 95% reference interval recommen-ded by the C28-P3 file were calculated by the non-parametric method.Results Serum total bilirubin detection results had no statis-tically significant differences between the two kinds of detection methods,between rural and urban populations,among all ages and genders (P >0.05).The ultimate reference interval of serum total bilirubin in the northwest area was 2.19 -29.29 μmol/L.Con-clusion The differences of serum total bilirubin reference interval exist between the healthy population in the Northwest area of China and the current reference interval used in domestic and foreign population.Establishing the reference intervals of new bio-chemical test item suitable for China′s population will provide the scientific basis for the evaluation of disease diagnosis,treatment, prognosis judgment and health assessment in the Chinese population.

Objective To compare the clinical effect of drug-eluting stents implantation or pure balloon expansion for the treatment of patients with knee artery lesions. Methods Sixty-eight patients with knee artery lesions were randomly and voluntarily divided into the control group( n=34 )and observation group( n=34 ) . The patients in the control group were given balloon expansion treatment,while in observation group were implanted drug-eluting stents besides balloon expansion. Pathological changes of skin temperature,percutaneous oxygen partial pressure( TcPO2 ),ankle brachial index( ABI),and the recurrence rate of patients before and after treatment for 6 months and 12 months were recorded and compared. Results After 6 months treatment,TcPO2 and ABI in observation group were(35. 4 ± 4. 5)mmHg and 0. 85 ± 0. 04,significantly higher than that in control group(( 28. 2 ± 3. 5 ) mmHg and 0. 62 ± 0. 03 ),and the differences were statistically significant( t=2. 535,2. 185;P﹤0. 05). At 12 months after treatment,skin temperature,TcPO2,ABI in observation group were(32. 4 ± 4. 3)℃,(34. 3 ± 4. 2)mmHg and 0. 80 ± 0. 04,significantly higher than that of the control group ((28. 6 ± 3. 7)℃,(26. 4 ± 3. 6)mmHg,0. 53 ± 0. 02;t =2. 354,2. 648,2. 064;P ﹤0. 05). Meanwhile,the recurrence rate was 5. 9% in observation group,significantly lower than that of the control group( 32. 4%;χ2=8. 463,P﹤0. 05). Conclusion The clinical effect of drug-eluting stents implantation in treatment of patients with knee artery lesions is superior to that of balloon expansion.

Objective To study the reference interval of serum iron and magnesium of healthy people in northwest region . Methods 722 healthy people aged 18- <80 were recruited according to the screening criteria of enzymatic multi-center study of International Federation of Clinical Chemistry (IFCC) .Atomic absorption spectrophotometry and Roche assay kit were employed for serum iron ,magnesium detection .Results Differences of serum iron ,magnesium detection results obtained by two different methods ,between urban and rural people and among different age periods showed no statistically significant (P>0 .05) ,and the re-sults was combined into one group .Difference of iron test results between male and female was statistically significant (P<0 .05) , and grouping was performed according to gender ,that was ,male:10 .05-36 .21 mmol/L ,female:6 .19-30 .87 mmol/L .Difference of magnesium test results between male and female showed no statistical significance (P<0 .05) ,and was combined into one group , with the reference interval of 0 .74-1 .06 mmol/L .Conclusion The iron and magnesium 95% reference intervals of healthy people in northwest region are narrower than those of the National test results .

Objective To investigate the efficacy and toxicity of low dose of docetaxel and cisplatin (TP) combined with radiotherapy in the treatment of elderly patients with esophageal cancer.Methods The data of 65 elderly patients with esophageal cancer were studied retrospectively, including 33 patients treated by TP combined with radiotherapy (chemoradiotherapy group) and 32 patients by radiotherapy only (radiotherapy group).Patients in both groups received 3D conventional radiotherapy (3D-CRT).In chemoradiotherapy group, 40 mg/1f docetaxel and 40 mg/1f cisplatin were administered once a week on the 1st, 8th, 15th, 22th, 36th day of five successive weeks.Results In chemoradiotherapy group and radiotherapy group, the response (CR+RR) rates were 87.8 ％ (29/33) and 65.6 ％ (21/32), respectively (P ＜ 0.05), the median TTPs were 5.5 months and 4.3 months, and the difference had statistically significant (P ＜ 0.05).The 1-year survival rate was 69.6 ％ and 59.3 ％ in chemoradiotherapy group and radiotherapy group, respectively, and there was no statistically significant difference between both groups (P ＞ 0.05).The incidences of esophagitis and gastrointestinal tract were slightly higher in chemoradiotherapy group than those in radiotherapy group (P ＜ 0.05).Conclusion Concurrent radiotherapy and chemotherapy with low dose TP can treat effectively esophageal cancer in elderly patients with the tolerable toxic reactions.