1.Expressions of MCM5 and Ki67 in cervical intraepithelial neoplasia and cervical cancer and their clinical significance
Journal of Third Military Medical University 2003;0(14):-
Objective To study the expressions of MCM5 and Ki67 in cervical intraepithelial neoplasia (CIN) and cervical cancer and their clinical significance. Methods Immunohistochemistry (S-P method) was used to detect the expressions of MCM5 and Ki67 in 50 CIN and 49 cervical cancer. Results The positive expression rate of MCM5 and Ki67 in normal cervical epithelium, CIN Ⅰ-Ⅱ, CIN Ⅲ and cervical cancer were 26.7%, 72.0%, 80.0%, 97.9% and 10.0%, 32.4%, 84.0%, 97.9% respectively. The positive expression rate of MCM5 was significantly different between CIN and cervical cancer (P
2.Studies on chemical constituents of hedysarum multijugum
Wei WANG ; Wei CHEN ; Hubiao CHEN ; Jianquan LIU ; Yuying ZHAO
Journal of Peking University(Health Sciences) 2001;33(3):205-208
Objective: To study the chemical co nstituents obtained from Hedysarum multijugum . Methods: The compounds were separated by liquid-liquid extraction a nd chromatography, their structures were identified by spectral analyses. Results: Seven compou nds were obtained triacontyl alcohol (1); tetra cosanoic acid (2); 5,7-dihydro xy-6, 8-di-C-prenyl -4′-methoxy -isoflavone (3); 4′-hydroxy-trans-cinnamic acid docosyl ester (4); stigmasterol (5); 5, 7-dihydroxy-6-C-prenyl-4′-methoxy-isofl avone (6, Gancaonin M); caffeic acid tetracosyl ester (7). Conclusion: Compounds 3 and 4 were new natural compoun ds and the rest were obtained from the plant for the first time.
3.Expression and significance of toll-like receptor 4 in the uvea of endotoxin induced uveitis
Hong LU ; Wei CHEN ; Li ZHAO ;
Ophthalmology in China 1993;0(01):-
Objective To investigate the expression and significance of Toll-like receptor 4(TLR4)in the uvea of endotoxin in- duced uveitis.Design Experimental study.Participants 12 Wistar rats were divided into two groups at random,a group(n=6)of endo- toxin induced uveitis(EIU)and a control group(n=6).Methods Cholera vibrio was injected into hind footpad and abdominal cavity in the EIU group.In the control group,cholera vibrio was replaced by PBS.Anterior segment of the rats eyes were observed by slit lamp microscope at 4h,10h,16h,24h after injection.Immunohistochemical staining was performed using polyclonal antibodies to TLR4 on the frozen sections of the eyes and uveal wholemounts at 24 hours after LPS injection.Main Outcome Measures The inflammation of anterior segment and the number of TLR4 positive cells in uveal wholemounts.Results The inflammation began at 4h after LPS injec- tion.Cellulose exudates were observed at 16h after injection.The positive-stained protein located in cellular membrane or cytoplasm. The number of TLR4 positive cells in EIU group is evidently higher than that in the control group.TLR4 positive cells were hardly de- tected in the frozen sections of eyes.Conclusion TLR4 expression increases in the EIU,which suggests that TLR4 probably participates in the formation and development of acute anterior uveitis.(Ophthalmol CHN,2008,17:48-51)
4.Investigative strategy for research on biological basis of traditional Chinese medicine syndrome: feature selection-based data mining methods.
Jianxin CHEN ; Huihui ZHAO ; Wei WANG
Journal of Integrative Medicine 2010;8(8):747-9
This paper is devoted to discussing two research patterns of biological basis of traditional Chinese medicine syndrome and presenting a research strategy for data mining methods. It points out that data mining methods which are based on feature selection are better fit for investigating biological basis of traditional Chinese medicine syndrome. Based on such a discussion, the concept of "characteristic pattern" is proposed to bridge the gap between "golden index" and biological basis of traditional Chinese medicine syndrome. This paper presents a novel research avenue for investigating biological basis of traditional Chinese medicine syndrome.
5.Mild cognitive impairment and vascular cognitive impairment no dementia
Nana SHEN ; Wei CHEN ; Renliang ZHAO
International Journal of Cerebrovascular Diseases 2010;18(9):691-695
The mild cognitive impairment and vascular cognitive impairment no dementia are the early stages for Alzheimer's disease and vascular dementia proposed in recent years.They both not only have some differences,but also have many crosses and contacts in concepts,diagnostic criteria,epidemiology,pathology,neuropsychology,and biological markers,etc.This article reviews the recent progresses and problems facing in recent years.
6.Current status of diagnosis and treatment for medial collateral ligament injury of the knee
Xinyu ZHAO ; Wei ZHANG ; Liaobin CHEN
Journal of Clinical Surgery 2015;(1):73-76
Medial collateral ligament injury is the most common injury of the knee ligament. Most patients with conservative treatment can achieve preinjury activity level. Nonetheless,it's necessary to eval-uate the severity of the injury and judge the best time and details for surgery as serious injury of the medial collateral ligament will cause chronic knee stability and accelerate its degeneration. This paper summarizes the current status of diagnosis and treatment for medial collateral ligament injury of the knee,aiming to pro-vide guidance for dealing with this lesion.
7.Role of pharmaceutical interventions in parenteral nutrition: prescription standardization and error prevention
Chinese Journal of Clinical Nutrition 2014;22(3):167-170
Objective To investigate the effects of pharmaceutical interventions on parenteral nutrition.Methods Data collection sheet (with data,ward,patient general information,type of irrational prescribing,type of error,process of error,intervention content,and intervention results) for recording pharmaceutical interventions was designed.The prescriptions of total parenteral nutrition in our hospital from January 1st,2013 to December 31st,2013 were retrospectively analyzed.Pharmaceutical interventions were carried out for unreasonable prescriptions.Results A total of 6 454 prescriptions were reviewed during the research period,among which pharmaceutical interventions were provided for 154 prescriptions (2.39%).Totally 160 errors were identified,and 44 were prevented.The intervention acceptance rate was 98.70%.Conclusions Pharmaceutical interventions can adjust unreasonable prescriptions and modify errors.It is useful to promote the clinical drag use in a safe,rational,effective,and economical manner.
8.Expression of discoidin domain receptor 1 in the rat with pulmonary fibrosis induced by acute paraquat ;poisoning
Feng CHEN ; Wei XIONG ; Yu ZHAO
Chinese Critical Care Medicine 2016;28(10):891-895
Objective To explore the expression of discoidin domain receptor 1 (DDR1) in rats with pulmonary fibrosis induced by paraquat (PQ) poisoning, and its relationship with the expression of transforming growth factor-β1 (TGF-β1). Methods 120 Sprague-Dawley (SD) rats were divided into control group and 20, 40, and 80 mg/kg PQ poisoning groups (each n = 30). Pulmonary fibrosis induced by PQ poisoning model was reproduced by one time administration of 20, 40, 80 mg/kg of 20% PQ, and the rats in control group were given 4 mL normal saline. Fifteen rats in control and different doses of PQ groups were sacrificed at 7 days and 21 days after intragastric administration, and lung tissues were collected. Pulmonary fibrosis was observed after hematoxylin-eosin (HE) staining. The immune-histochemical method was used to determine the expressions of DDR1 and TGF-β1. The relationship between the expression of TGF-β1 and DDR1 was analyzed by Pearson correlation analysis. Results The rats in control group were active, and no pathological changes in lung tissue were found. The rats in PQ groups became shortness of breath, bristles, and slow reaction etc. 0.5 hours after intragastric administration. After 7 days, the lung tissue was dark red, hard texture, appearance of yellow soil fiber nodules and obsolete hemorrhage, destruction of alveolar structure. The extent of lung injury increased gradually with the time of poisoning and the increase of PQ dose. It was shown by immune-histochemical staining that the control group had only a small amount of DDR1 and TGF-β1 positive expressions; in PQ groups, there were a large number of DDR1 and TGF-β1 positive expression particles in the alveolar wall, pulmonary interstitial and alveolar cavity. It was displayed by quantitative analysis that compared with the control group, DDR1 and TGF-β1 expressions were significantly increased in 20, 40, 80 mg/kg PQ groups with time- and dose-dependent [DDR1 (integral A value): 0.221±0.014, 0.249±0.021, 0.364±0.016 vs. 0.121±0.036 at 7 days; 0.247±0.025, 0.321±0.015, 0.432±0.027 vs. 0.139±0.021 at 21 days; TGF-β1 (integral A value): 0.230±0.016, 0.265±0.015, 0.339±0.016 vs. 0.129±0.032 at 7 days; 0.248±0.011, 0.295±0.016, 0.399±0.026 vs. 0.119±0.026 at 21 days; all P < 0.05]. It was shown by Pearson correlation analysis that DDR1 expression was positively correlated with TGF-β1 expression with the increase of PQ dose and poisoning time (DDR1 with TGF-β1: r = 0.996, P < 0.000; DDR1 with PQ dose: r = 0.985, P < 0.000; DDR1 with poisoning time: r = 0.989, P < 0.000; TGF-β1 with PQ dose: r = 0.992, P < 0.000; TGF-β1 with poisoning time: r = 0.972, P < 0.000). Conclusions The expression of DDR1 in the lung tissue in PQ poisoning rats showed a time- and dose-dependent change, and it was positively correlated with TGF-β1 expression. DDR1 may be involved in the process of pulmonary fibrosis induced by PQ poisoning.
9.Effects of propofol on glomerular and renal tubular functions
Heling ZHAO ; Wei CHEN ; Xichun ZHU
Chinese Journal of Anesthesiology 1994;0(06):-
Objective To evaluate the effects of propofol on glomerular and renal tubular functionsMethods Twenty-five patients without renal disease were randomly assigned to two groups: propofol group(n=13) and enflurane group(n=12), The creatinine, urea nitrogen, uric acid(UA) , ? 2 -microglobulin( ? 2-MG) concentrations in serum and urine were measured before induction of anesthesia, and 1, 2, 3, and 24h after induction Albumin(ALb), immunoglobulin G(IgG), pH, and protein in urine were also examinedResults In both groups , the urine concentrations of ? 2-MG , ALb and IgG were significantly increased following the administrations compared with those before induction of anesthesia (P
10.Lens-sparing vitreoretinal surgery for treatment of giant retinal tears
Song CHEN ; Jinwen WEI ; Bingshui ZHAO
Chinese Journal of Ocular Fundus Diseases 1999;0(02):-
Objective To evaluate the effect of vitreoretinal surgery with lens sparing technique in treating the detachment with giant retinal tear(GRT) associated with proliferative vitreoretinopathy(PVR). Methods Thirty one consecutive eyes with GRT underwent vitrectomy were analysed retrospectively. Operative techniques included peeling of pre retinal membrane, injection of perfluorodecalin liquid, retinotomy and retinectomy,endolaser,and silicon oil or C 2F 6 gas tamponade. Lens sparing vitrectomy was performed in 28 phakic eyes. Follow up period ranged from 11 to 34 months. Results Anatomic retinal attachment was achieved intraoeratively in 29 eyes. In 16 eyes of 28 eyes with postoperative cataract formation,3 eyes underwent cataract surgery with or without intraocular lens implantation. The corrected final visual acuity ranged from 0.4 to 0.01. Conclusion Most phakic eyes of retinal detachment with GRT PVR can be successfully operated on with an outcome of improving the visual acuity by using techniques of lens sparing vitrectomy, perfluorodecalin liquid and silcone oil tamponade.