1. The inhibitory effect of aspisol on human breast cancer cells in vitro and its mechanism
Tumor 2008;28(7):563-566
Objective: To investigate the effects of aspisol on expressions of cyclooxygenese-2 (COX-2), matrix metalloproteinaseses-9 (MMP-9) proteins in human breast cancer MDA-MB-231 cells. Methods: MDA-MB-231 cells were incubated with aspisol at various concentrations for 24 h. The morphological changes of MDA-MB-231 cells were evaluated by HE staining. The inhibitory effects of aspisol on the proliferation of MDA-MB-231 cells were determined by MTT assay. The effects of aspisol on the expressions of COX-2 and MMP-9 in MDA-MB-231 cells were measured by Western blotting. Results: Under light microscope the cells in aspisol treatment groups showed decreased density, round shape, and light staining of nucleus. Aspisol significantly inhibited the proliferation of MDA-MB-231 cells (P < 0.01). Compared with the control group, aspisol dose-dependently inhibited the expressions of COX-2 and MMP-9 protein in MDA-MB-231 cells (P < 0.05). Conclusion: This study suggested that aspisol inhibited the expressions of COX-2 and MMP-9 protein in breast cancer MDA-MB-231 cells.
2.Retrospective analysis of clinical effects of intraocular foreign bodies in 46 cases
International Eye Science 2014;(10):1889-1891
AIM: To retrospectively analyze the effect of different surgical treatment on intraocular foreign bodies, according to different types and position.
METHODS: Clinical data of 46 cases diagnosed with intraocular foreign bodies from June 2010 to April 2013 were retrospectively analyzed.
RESULTS:Intraocular foreign bodies in anterior segment could be removed or magnetically attracted directly, intraocular foreign bodies in posterior segment could be attracted if there was accurate location. Vitrectomis was more favorable for the non magnetic or intraocular foreign bodies in posterior segment. In 46 cases, all intraocular foreign bodies ( 100%) in posterior segment were removed successfully. Among them the functional cure in 33 cases ( 72%) , the anatomical cure in 12 cases ( 26%) , discharged in 1 case (2%).
CONCLUSION:The aim of operation is to reconstruct of eyeball structure preserve and restore visual function. We should find more appropriate mode of operation and timing of surgery according to the foreign bodies'different types and injury of eyeball, reduce complications, preservation eyeball and improve visual function.
4.Establishment of pharmacodynamic model of sevoflurane in pediatric patients: bispectral index
Yunan SONG ; Yue HUANG ; Lin LIN ; Mazhong ZHANG ; Jing NIU
Chinese Journal of Anesthesiology 2013;33(11):1342-1345
Objective To establish the pharmacodynamic model of sevoflurane with bispectral index (BIS) as the effective index in pediatric patients.Methods Thirteen ASA physical status Ⅰ or Ⅱ pediatric patients,aged 4-9 yr,weighing 12-39 kg,undergoing non-cardiac surgery,were selected in the study.The pediatric patients sequentially inhaled 1%,5 % and 1% sevoflurane via a face mask and each concentration was inhaled for 15 min.BIS value,HR,BP and SpO2 were automatically recorded every 10 s.Based on nonlinear mixed effect modeling,the population pharmacodynamic model of sevoflurane was established using NONMEM software.The effect of age on the pharmacodynamic parameters was evaluated using a stepwise forward addition then backward elimination modeling approach.The standard for model improvement was defined as a decrease in the value of the objective function by more than 3.84.Results Twelve pediatric patients,aged 4.0-8.5 yr,weighing 12.8-38.0 kg,with body height of 92-135 cm,were enrolled in this study and the data which were enrolled comprised 2964 effective concentration-time-BIS points.The model was not improved significantly with any covariates (age,body height,and body weight) introduced (P > 0.05).The estimated parameters of the final pharmacodynamic model of sevoflurane were as follows:ke0 =O.516/min ; EC50 (BIS50) =2.11% ; γ =2.46 ; E0 =74.6 ; EMAx =11.2.Conclusion The pharmacodynamic model of sevoflurane is successfully established with BIS as the effective index in pediatric patients,and the analysis for each parameter of the model indicates that the sensitivity to sevoflurane is lower,but the blood-brain equilibration time of the drug is shorter and the onset and recovery are faster in children than in adults.
5.Effects of resveratrol on proliferation of retinal vascular endothelial cells and expression of VEGF
Wen-Lin, LI ; Li, ZHANG ; Yue-Li, ZHANG
International Eye Science 2008;8(6):1087-1090
AIM: To study the effects of resveratrol on the proliferation of human retinal vascular endothelial cells induced by cobalt chloride-simulated hypoxia in vitro.METHODS: CoCl2 (100μmol/L) was used to simulate hypoxic condition, and human retinal vascular endothelial cells were cultured in vitro as model. The cell proliferation was determined by MTT method; SABC method was employed to test the expression of vascular endothelial growth factor (VEGF); and computer image analyzer was used to process data. The effects of resveratrol on the proliferation of vascular endothelial cells were observed.RESULTS: Resveratrol inhibited the proliferation of human retinal vascular endothelial cells induced by CoCl2 in a dose- and time-dependent manner in vitro, meanwhile VEGF expression in all groups which were administered medicine was down-regulated. Both kinds of inhibitive effects of resveratrol were statistically significant (P<0.01).CONCLUSION: Resveratrol can significantly inhibit the proliferation of human retinal vascular endothelial cells and the expression of VEGF, which may provide a new approach for prevention and treatment of retinal neovascular diseases.
6.Estimation of the effective doses for interventional employees in three common interventional diagnosis and treatment procedures
Lin ZHANG ; Jianguo ZHU ; Nan MIN ; Feng LU ; Yue CHEN
Chinese Journal of Radiological Medicine and Protection 2011;31(4):391-394
Objective To study and estimate the effective dose of interventional employees in the common cerebralvascular, cardiovascular and liver interventional diagnosis and treatment.Methods The absorbed doses of tissue or organ of anthropomorphic phantom in these three procedures were estimated by the anthropomorphic phantom experiment.The effective doses were calculated by the tissue weight factor which was given by International Commission on Radiological Protection publication 103.Results The effective doses to high, medium and low group were 24.0, 9.7,6.8 μSv for cerebralvascular interventional diagnosis and treatment, and 36.3, 29.3, 17.8 μSv for cardiovascular interventional diagnosis and treatment, and 23.9, 11.3, 5.5 μ Sv for liver interventional diagnosis and treatment, respectively.Conclusions The effective doses of high, medium and low group of interventional employees in cardiovascular interventional procedure are higher than those of cerebralvascular and liver interventional procedures.
7.LEEP conization on future obstetrics outcome
Jinghong JIANG ; Wei ZHANG ; Zhuoran WANG ; Qing LIN ; Yue WANG
Clinical Medicine of China 2009;25(11):1209-1211
Objective To evaluate the implication of LEEP cervical conization on the outcome of subse-quent pregnancy. Methods The study group comprised 85 women who had a LEEP in Renmin Hoapital of Wuhan University during Jan. 2005 and Jan. 2007 ,and then had a subaequent pregnancy. 109 control women were extracted from outpatient clinic who received antenatal care in the same period with no history of cervical surgery, matching by age, health condition and perinatal stage. The pregnancy outcome of two groups were analyzed. Results Women who had a LEEP were more likely to give preterm delivery than controla (9.88% va 3.70%). But there waa no differ-ence in preterm delivery(χ2=2.97, P>0.05). So were low birth weight infants, preterm premature rupture of mem-branes (pPROM) or cesarean section. On a further study, we found that the time interval between cervical conization and subsequent pregnancy was associated with risk of preterm birth. The shorter time interval, especially shorter than 6 months,the higher risk of preterm birth. Conclusions LEEP cervical conization is not associated with an in-creased risk of preterm delivery, low birth weight infants, pPROM or cesarean section. LEEP conization is a more sol-id choice for women who want to preserve reproductive function. But it would be better for them to have pregnancy plan six months later.
9.Observation of oral Streptococcus oligofermentans colonization in rats
Jie ZHANG ; Lei SONG ; Denghui DUAN ; Lin YUE
Journal of Peking University(Health Sciences) 2016;48(2):316-319
Objective:To study the colonization ability of Streptococcus oligofermentans (S.oligofer-mentan)in the condition of high sucrose in oral cavity of rats.Methods:In this study,48 SPF-SD rats aged 21 days were selected.From 24th to 27th days,the rats were fed with water of antibiotic and fed with high glucose diet continuously.On the 28th day,the rats were divided into four groups randomly,12 rats per group.From the 28th day to 30th day,the first group (SMgroup)was inoculated with S.mutans,the second group (SO group)with S.oligofermentan,the third group (SO+SM group)with mixture of S. mutans and S.oligofermentan,the control group not with any bacteria.On the next day and the 10th day after inoculation of bacteria,the samples of dental plaque of the rats were acquired by scrubbing occlu-sal,buccal and lingual surfaces of bilateral mandibular molars with sterile swabs.The samples of SM group were inoculated on MSB and BHIS,of SO group on MSAE,of SO+SMgroup on MSB,MSAE and BHIS,of the control group on MSB and MSAE.S.mutans were screened and calculated on MSB,the suspected colonies of S.oligofermentan were screened and identified by the analysis of 16S rDNA.Re-sults:On the next day,the detection rate of S.oligofermentan was 33.3% (4/12)in the group of SO;in the group of SO+SM,the detection rate of S.oligofermentan was 0,the detection rate of S.mutans 100.00%,and the proportion of S.mutans 14.70%±4.53%;in the group of SM,the detection rate of S.mutans was 100.00%,the proportion of S.mutans 12.42%±4.27%.On the 10th day,in the group of SO,the detection rate of S.oligofermentan was 0;in the group of SO+SM,the detection rate of S.oligofermentan was 0,the detection rate of S.mutans 100.00%,and the proportion of S.mutans 15.78%±5.10%;in the group of SM,the detection rate of S.mutans was 100.00%,and the propor-tion of S.mutans 17.08%±5.75%.Conclusion:In the condition of the experiment where high glucose was maintained in the oral cavity in rats,S.oligofermentan appeared transiently and couldn’t colonize in the rats.
10.Gastric sensorimotor function in patients with functional dyspepsia
Xiaoguang ZHANG ; Pinjin HU ; Jinkun LIN ; Dianchao YUE ; Xiaozhong PENG ;
Chinese Journal of Digestion 2001;0(04):-
0.05). Conclusions Gastric hypersensitivity, impaired proximal gastric accommodation and delayed gastric emptying may be important but independent pathophysiological factors of FD. Different pathophysiological factors can coexist in one patient with FD.