1.Progression in the basic research on neovascular glaucoma
Yu-Jie, LI ; Xu, HOU ; Dan, HU
International Eye Science 2015;(7):1179-1183
Neovascular glaucoma ( NVG ) is a series of blinding and intractable eye diseases, which caused by various intraocular or extraocular diseases. The iris and angle neovascularization and vascular membrane fiber contraction may eventually lead to progressive elevation of intraocular pressure and angle closure. Because of complex etiology, the treatment of NVG is intractable and inefficient. Based on the articles published in recent years, we reviewed the progressions of the relevant cytokines and animal models.
2.Review of the Ecological Risks of Genetically Modified Trees
Ying-Jie HOU ; Bing-Yu ZHANG ; Xiao-Hua SU ;
China Biotechnology 2006;0(12):-
Delightful achievements have been obtained in forestry genetic breeding since the application of transgenic technology in this field during the past 20 years. Field trials of some genetic modified (GM) trees have been carried out, and some GM trees have been commercialized. Meanwhile, the risks of ecological safety caused by GM trees have raised attention in the public gradually. These issues mainly include the horizontal transfer and vertical flow of foreign genes, and the potential effects on insects, soil ecosystems and virus. The current status of field trials, commercial applications and the potential ecological risks of GM trees were summarized. Then the prospects of GM trees were also presented.
3.Interfractional dosimetric study of target volume and organs at risk following intracavitary brachytherapy for cervical cancer
Junfang YAN ; Lang YU ; Ke HU ; Xiaorong HOU ; Jie SHEN ; Xin LIAN ; Zhikai LIU ; Fuquan ZHANG
Chinese Journal of Radiation Oncology 2017;26(9):1045-1049
Objective To examine the interfractional dosimetric variations among inverse three-dimensional (3D) plan, forward 3D plan, and two-dimensional (2D) plan of intracavitary brachytherapy for cervical cancer, and to discuss the risk of implementing the interval plan on different implantation applicators at short time intervals.Methods Twenty-five groups of CT-guided intracavitary brachytherapy (two consecutive radiations at ≤4 d apart) plans from 11 cervical cancer patients who received radical radiation therapy in our hospital were reviewed and compared.The dwelling location and time of the first intracavitary brachytherapy plan (Plan-1) were simulated on the CT image of the second intracavitary brachytherapy to form Plan-1-S.The target coverage indices and D 2 cc of organs at risk (OARs) of Plan-1-S and Plan 2(actual plan of the second intracavitary brachytherapy) under the three planning modes were recorded and compared using the paired t-test, Wilcoxon signed rank test, and ANOVA.Results The D90, D100, and V100 of high-risk CTV were significantly lower in Plan-1-S created under the inverse mode in the actual plan (-9.11±13.46%,-13.16±18.79%, and-7.80±13.34%, P=0.002, 0.002, and 0.005, respectively).D90, D100, and V100 of the interval plan had the greatest reduction under the inverse mode (76%, 80%, and 76%, respectively).The maximum reductions in D90, D100, and V100 were 332.14 cGy (2D), 244.12 cGy (forward), and 41.76%(inverse).OAR overdose occurred most frequently under the forward mode;the rates of D90, D100, and V100 reductions accompanied by one OAR overdose were 29.41%, 37.50%, and 25.00%, and the rates of D90, D100, and V100 reductions by two OAR overdoses were 5.88%, 12.50%, and 6.25%,respectively.Overdose occurred most frequently in the small intestine (36%).Comparison of the three planning modes showed that the inverse plan had a greater reduction in each target coverage index than the 2D plan.Conclusions The simulated interval plan can significantly reduce target coverage and increase the risk of OAR overdose regardless of the planning mode and the short time intervals, and is therefore not recommended for clinical application.
4.Progesterone protects neurons against impairment induced by Aβactivated astrocytes
Jie WU ; Honghai WU ; Yang YU ; Yabin QIN ; Xiaolei HAN ; Yanning HOU
Chinese Pharmacological Bulletin 2014;(11):1539-1542,1543
Aim To investigate the effect of progester-one ( PROG) in protecting the neurons against impair-ment induced by the Aβ1-42 activated astrocytes, and the underlying molecular mechanism. Methods The astrocytes were divided into 5 groups: control, Aβ, and Aβplus PROG groups treated with 3 different con-centrations of progesterone for 24h. Then, Aβand pro-gesterone were removed, and neurons were co-cultured with the treated astrocytes. MTT assay was used to e-valuate the viability of cultured neurons; ELISA was used to detect the levels of IL-1βand TNF-αin culture media of astrocytes; immunofluorescence and Western blot were performed to detect the activation of NF-κB in astrocytes. Results PROG dose dependently pro-tected against Aβ1-42 activated astrocytes induced via-bility decrease in co-cultured neurons. Aβ induced release of IL-1β and TNF-α from astrocytes, and in-crease of NF-κB activity was abolished by progesterone treatment. Conclusion PROG protects the neurons through inhibiting the reactivity of astrocytes, and the underlying mechanism involves the NF-κB signal trans-duction.
5.Treatment of unstable thoracolumbar burst fractures: a comparison between anterior approach and posterior approach
Hui MA ; Jie ZHAO ; Baoqing YU ; Shuogui XU ; Zhiming CHEN ; Cong WANG ; Tiesheng HOU
Chinese Journal of Trauma 2008;24(8):602-604
Objective To retrospectively analyse the anterior and posterior surgical approaches in treatment of unstable burst thoracolumbar fractures and compare radiographic measurement parameters of beth surgical techniques so as to provide references for surgical treatment of such kind of fracture. Methods The study selected 41 patients with unstable thoracolumbar fracture treated with either anterior neurodecomprossion and fixation (n=19) or posterior reposition and internal fixation by pedicle screw (n=22) from January 2003 to December 2005. All patients were followed up for 24-48 months ( mean 38 months) and divided into anterior approach group and posterior approach group. Sagittal alignment was assessed by the Cobb angle depending on lateral radiographs. Results The Cobb angle of the anterior approach group was average 27.3°on admission but 3.1°postoperatively and 4.6° at follow-up; while the Cobb angle of posterior approach was average 26.1° on admission, 3.0°postoperatively and 12.5°at follow-up. There was no statistical difference between Cobb angle on admission and postoperative one (P>0.05) but showed significant differences between them at follow-up ( P<0.01). Conclusion The anterior surgical approach can consistently yield better maintenance of kyphotic correction compared with the posterior surgical approach.
6.Comparison study of corneal epithelial remodeling after TransPRK and Epi-LASIK for myopia
Fan-Chao, MENG ; Jie, HOU ; Yu-Lin, LEI ; Xiu-Yun, ZHENG
International Eye Science 2016;16(8):1519-1521
Abstract?AIM: To compare the changes in epithelial thickness profile following TransPRK and Epi-LASIK for myopia.? METHODS: In this prospective non -randomized controlled study, 76 right eyes of 76 myopic patients with the spherical equivalent refraction -1.25 to -6.00D were included under the informed consent. The eyes were divided into TransPRK group for 43 eyes and Epi-LASIK group for 33 eyes. Epithelial thickness was measured using spectral-domain optical coherence tomography at different corneal zones ( central, 2mm; paracentral, 2-5mm;and mid-peripheral, 5-6mm) preoperatively and at 1, 3, and 6mo postoperatively. The results were compared between the two groups.?RESULTS: The epithelium were thicker at 3 and 6mo after surgery compared to preoperative measurements in the two groups (all P<0.05).In TransPRK group, the epithelial thickness at 3 and 6mo demonstrated a negative meniscus-like lenticular pattern with lesser thickening centrally and progressively great thickening centrifugally (F3mo =-2.687,P=0.027;F6mo =-2.908,P=0.000).No statistically significant change was detected among the three zones in Epi-LASIK group (F=1.365, P=0.237). The epithelial thickness was thicker in the TransPRK group compared to the Epi-LASIK group mid-peripherally ( P<0.05) .? CONCLUSION: Significant epithelial thickening was observed after TransPRK and Epi-LASIK.It was showed a lenticular change with more thickening mid-peripherally after TransPRK than Epi -LASIK. Wound healing and inflammation may account for differences in the effect on epithelial thickness change by both surgeries.
7.Effects of Shexiang injection on expression of CD54 of mononuclear cells and soluble vascular cell adhesion molecule-1 in patients with acute cerebral infarction.
Yu-sheng WU ; Qian HOU ; Dao-jie ZHANG
Chinese Journal of Integrated Traditional and Western Medicine 2006;26(4):308-310
OBJECTIVETo investigate the clinical efficacy of Shexiang Injection (SI) on inflammatory reaction in patients with acute cerebral infarction (ACI).
METHODSForty-two patients with ACI were randomly divided into two groups, 21 in each group. The control group treated with conventional therapy and the SI group treated with conventional therapy plus SI. Besides, 21 healthy people were arranged in the normal group for control. Expression of CD54 of mononuclear cell (MC-CD54) and serum level of soluble vascular cell adhesion molecule-1 (sVCAM-1) were determined and the clinical efficacy was observed dynamically before treatment and on the 7th, 14th day of the course.
RESULTSLevels of MC-CD54 expression and sVCAM-1 in the ACI patients increased obviously (P < 0.01), reached the peak on the 7th day, and declined obviously on the 14th day in both groups, however, the lowering in the SI group was more significant than that in the control group (P < 0.01); and positive correlation was shown between these two indexes (P < 0.01). After treatment, score of neural defect was improved more significantly (P < 0.01), and the markedly effective and curative rate was higher in the SI group than those in the control group (P < 0.05), respectively.
CONCLUSIONSI could inhibit the subsequent inflammatory reaction, and thus improve the clinical efficacy of conventional therapy in treating patients with ACI.
Aged ; Cerebral Infarction ; blood ; drug therapy ; Drug Administration Schedule ; Drugs, Chinese Herbal ; administration & dosage ; therapeutic use ; Female ; Humans ; Injections, Intravenous ; Intercellular Adhesion Molecule-1 ; blood ; Leukocytes, Mononuclear ; drug effects ; metabolism ; Male ; Middle Aged ; Phytotherapy ; Treatment Outcome ; Vascular Cell Adhesion Molecule-1 ; blood
8.Dosimetric comparison of simulation treatment planning for thoracic esophageal carcinoma patients in contouring biological tumor volume with FLT and FDG PET-CT
Dali HAN ; Guifang ZHANG ; Zheng FU ; Jie LU ; Xiaojun ZHONG ; Shuqiang ZHAO ; Xiaohui WANG ; Qingzhen HOU ; Yonghua YU ; Jinming YU
Chinese Journal of Radiological Medicine and Protection 2011;31(1):41-45
Objective To investigate a feasibility of treatment planning in thoracic esophageal carcinoma with 3-deoxy-3-fluorothymidine (FLT) PET-CT and to compare with fluorodeoxyglucose (FDG) PET-CT based on dosimetric analysis.MethodsTwenty-two patients with esophageal squamous cell carcinoma detected by FLT and FDG PET-CT were enrolled.The gross tumor volumes ( GTV ),clinical target volume(CTV) and planning target volume ( PTV ) were delineated using treatment planning system of Philips Pinnacle3 based on the optimal threshold of FLT and FDG PET-CT respectively,and to make two groups simulation treatment planning.The parameters of dose-volume histograms in two groups planning were compared in the similar direction and ensuring prescribed dose line surround 95% target volume.Results The values of GTV,CTV and PTV in FLT PET-CT planning were less than those of FDG,that dose received by spinal cord in two planning were not significantly yet ( t = - 1.60,- 1.55,all P > 0.05 ).While,the values in mean lung dose,V5,V10,V30,V40 and V50 of bilateral lung,mean heart dose,and V30 of heart in FLT PET-CT planning were significant lower than those of FDG( t = -5.442 - -2.637,all P <0.05).Conclusions Compared with FDG,FLT PET-CT based treatment planning brings potential benefits for lungs and heart.
9.Application of infrared fluoroscopic navigation in guiding pedicle screw fixation of thoraic-lumbar spine
Zhong YU ; Liming WANG ; Jie XU ; Jianchao GUI ; Chunzhi JIANG ; Gangrui WANG ; Shengnai ZHEN ; Jingdong YAO ; Mingfu HOU
Journal of Chinese Physician 2001;0(09):-
Objective To evaluate the application of infrared fluoroscopic navigation guiding pedicle screwfixation of thoracic-lumbarspine.Methods The pedicle screw fixation of thoraic-lumbar spine was adopted in 32 patients,including 19 cases with thoracic-lumbarspine fractures,5 cases with protrusion of lumbar intervertebral disc or vertebral canal stenosis,8 cases with lumbar spine slippage.The timefor pedicle screwfixation and amount of bleeding were recorded.The pedicle screwposition was assessed with post-operative CTby using An-drewgrade.Results Totally148 screws were fixed in 32 cases successfully,including10 screws in T11,20 in T12,18 in L1,36 in L2,16 inL3,26 in L4,28 in L5,and 14 in S1.According to andrewgrade,165 screws were inⅠgrade(98%),2 inⅡgrade,and 1 inⅢ grade.Nonerve and spinal cord damage was observed after operation.The average time of per pedicle screwfixation was(10?2.4) min.The averageamount of bleeding was(400?52.3) ml in thoracic-Lumbar Spine fractures,(200?36.8) ml in protrusion of lumbar intervertebral disc orvertebral canal stenosis,and(300?44.6) ml in Lumbar Spine slippage.Conclusion Infrared fluoroscopic navigation can improve the pre-cision of pedicle screw fixation of thoraic-lumbar spine,reduce the amount of bleeding,and shorten the operative time.
10.A Strategy to Optimize the Oligo-Probes for Microarray-based Detection of Viruses
Zhuo, ZHOU ; Zhi-xun, DOU ; Chen, ZHANG ; Hou-qing, YU ; Yi-jie, LIU ; Cui-zhu, ZHANG ; You-jia, CAO
Virologica Sinica 2007;22(4):326-335
DNA microarrays have been acknowledged to represent a promising approach for the detection of viral pathogens. However, the probes designed for current arrays could cover only part of the given viral variants, that could result in false-negative or ambiguous data. If all the variants are to be covered, the requirement for more probes would render much higher spot density and thus higher cost of the arrays. Here we have developed a new strategy for oligonucleotide probe design. Using type I human immunodeficiency virus (HIV-1) tat gene as an example, we designed the array probes and validated the optimized parameters in silico. Results show that the oligo number is significantly reduced comparing with the existing methods, while specificity and hybridization efficiency remain intact. The adoption of this method in reducing the oligo numbers could increase the detection capacity for DNA microarrays, and would significantly lower the manufacturing cost for making array chips.