1.Treatment of endoscopic sphincterotomy by endoscope to the patients with common duct stones after their gallbladders resected
Chinese Journal of Primary Medicine and Pharmacy 2009;16(5):844-845
Objective To evaluate the safety and therapeutic value of endoscopic sphincterotomy by endoscope to the patients with common duct stones after their gallbladders resected. Methods 158 patients with common duct stones after their gallbladders resected were given the treatments of endoscopic sphincterotomy and nasobiliary drainage in recent 4 years. Results 153 of 158 patients got succeed. The symptoms obviously improved such as jaundice and fever and epigastric distention and so on. As for the postoperative complications, the hyperamylasemia occurred in 85 patients of all patients,and active hemorrhage in 2 patients,and acute pancreatitis in 16 patients,and cholangitis in 5 patients,but no one occurred biliary fistula,no one died,too. Conclusion EST is the best way for us to treat the patients with common duct stones after their gallhladders resected by endoscope,and its curative effect is sure and its safety coefficient is higher.
2.Anti-HIV therapy in central nervous system:challenges and strategies
Yulin ZHANG ; Dexi CHEN ; Ronghua JIN
Chinese Journal of Clinical Infectious Diseases 2015;(4):376-380
Combined antiretroviral therapy ( cART) is widely used for infections of human immune deficiency virus ( HIV) .However , some antiviral drugs can not reach the effective concentrations in central nervous system due to the hinder of blood-brain barrier ( BBB) , resulting in the formation of viral reservoir in central nervous system .BBB is formed by human brain microvascular endothelial cells ( HBMVECs ) , which are connected by tight junction and a thick basement membrane , and astrocytic end-feet.This paper reviews possible mechanisms of BBB hindrance and anti-HIV drug efflux by transport proteins , as well as effective methods to deliver antiretroviral drugs into brain , including the application of nano technology .
3.Evaluation of the Effects of Occupation Moral Training in Higher Vocational Nursing Students
Lucai SHAO ; Jiansong CHEN ; Dexi MENG
Chinese Medical Ethics 2015;(5):802-804
Objective:To investigate the effect of occupation moral training for nursing students .Methods:By cluster sampling method , two nursing professional classes were included as the research objects .One class was re-garded as the experimental group .The other class was regarded as the control group .The various measures were taken to cultivate occupation moral .The teaching reform of nursing ethics was carried out .The occupation moral education was integrated into the specialty courses .The occupation moral education was strengthened in clinical practice stage .After the culture period , two groups′nursing ethics knowledge was tested .Their satisfaction on oc-cupation moral cultivation effect was surveyed .The hospital satisfaction on their occupation morality level and qual-ity was surveyed too .The occupation moral cultivation effect was evaluated through these .Results: The experi-mental group′evaluation score of nursing ethics knowledge , the satisfaction rate of occupation moral cultivation effect , teaching hospital′satisfaction rate of occupation moral standards and quality were higher than those of the control group with a significant difference (P<0.05).Conclusion:The construction of occupation moral educa-tion system effectively improves the occupation moral level and comprehensive quality of nursing students .
4.Comparative study of the different surgical technique for intertrochanteric fractue in elderly
Dexi CHEN ; Xiuyang WAN ; Jixiao LANG
Orthopedic Journal of China 2006;0(06):-
[Objective]To evaluate and compare the of the ideals surgical technique for intertrochanteric fractue between DHS and arthroplasty.[Method]A total of 40 gerontal patients with the different surgical treatment from January 1999 to May 2004 were chosen. The mean age of the patients was 82 (75~90).Among the patients, 23 patients by DHS,17 by arthroplasty.[Result]The duration of follow-up averaged 1.5 years.The time in bed were 3 and 1 weeks due to DHS and arthroplasty, the full weight-bearing time were 10 and 6 weeks.[Conclusion]arthroplasty is ideal choice for the un-stable intertrochanteric fractue.
5.RP-HPLC method for the quantitation of β-Sitosterol in Elaeagnus Gonyanthes Benth
Dexi JIANG ; Wenzhi CHEN ; Dan ZHANG
Journal of Pharmaceutical Analysis 2010;22(3):160-162,167
Objective To establish an RP-HPLC method for the determination of β-Sitosterol in Elaeagnus Gonyanthes Benth. Methods The separation was performed on a luna C8 (2) (150 mm×4.6 mm, 5μm) column with the mobile phase of methanol-water (88∶12, v/v) at a flow rate of 1.0 mL/min, the detection wavelength was set at 210 nm, and the temperature of the column was maintained at 35 ℃. Results The calibration curve of β-Sitosterol was linear over the concentration range of 0.075-0.375 mg/mL (r=0.9999) and the average recovery of β-Sitosterol was 96.30% with RSD of 3.60%(n=3). Conclusion The method is simple, rapid, and accurate, and can be used for the quality control of Elaeagnus Gonyanthes Benth.
6.Relationship between cytokeratin 18 phosphorylation and hepatitis B virus infection
Ying SHI ; Feili WEI ; Luxin QIAO ; Dexi CHEN
Chinese Journal of Infectious Diseases 2014;32(1):39-42
Objective To investigate the relationship between hepatitis B virus (HBV) infection and cytokeratin 18 (CK18) phosphorylation.Methods Liver tissues were taken from 21 chronic hepatitis B (CHB) patients by liver biopsy and 14 healthy controls were collected.Immunofluorescence double staining and Western blotting were used to detect CK18 pSer33 and CK18 pSer52 phosphorylation.HepG2 cell line was transfected with either 1.3 mer HBV vector or empty control vector.CK18 pSer33 or CK18 pSer52 phosphorylation were tested using immunofluorescence double staining and Western blotting.Total mRNA was extracted from the cells.The expressions of cell division cycle 2 (cdc2) and protein kinase Cε (pKCε) were analyzed by realtime polymerase chain reaction relative quantification.Statistical analyzee were performed by using two-independent samples t test.Results Compared to healthy controls,phosphorylation of CK18 pSer33 in HBsAg stained hepatocytes was significantly higher in CHB patients (t=6.618,P=0.000).However,no difference was found in phosphorylation of pSer52 (t=2.429,P=0.051).Phosphorylation of CK18 pSer33 and expression of cdc2 mRNA in HBV transfected HepG2 were significantly higher in empty vector transfected HepG2 (t=5.365,P=0.006),while no difference was found in phosphorylation of pSer52 and expression of pKCε mRNA (t=1.098,P=0.334).Conclusion HBV infection is significantly associated with phosphorylation of CK18 pSer33.
7.Role of P53 outside the nucleus
Qingsheng HOU ; Yulin ZHANG ; Dexi CHEN ; Hongliang GUO
Journal of International Oncology 2012;39(9):665-668
P53 protein plays a crucial role in inhibition tumor development.It will accumulate in cells in the condition of DNA damage,oncogenes activation or stress.As a nuclear transcription factor,P53 can transactivate the genes which correlate with apoptosis,cell cycle control and other procedures. Current research reveals P53 outside the nucleus can induce apoptosis and inhibit autophagy which contributes to its function of tumor suppression.The study of the extranuclear function of P53 is beneficial to further understanding the mechanism of P53 in the genesis and development of tumor.
8.Intervention of Zhuanggu granule on IL-1β and TNF-α level of the patients with osteoarthritis
Jixiao LANG ; Dexi CHEN ; Peilin YU ; Jingming ZHAO ; Zhijun XING
International Journal of Traditional Chinese Medicine 2010;32(5):400-401
Objective To investigate the influence of Zhuanggu granule on the concentration of IL-1β and TN-F-α in knee cavity of patients with knee degenerated osteoarthritis. Methods A total of eighty patients with knee degenerated osteoarthritis were recruited into a Zhuanggu granule group (30 cases), a Sulphuric acid Glucosamine group (15 cases) and a Sodium Hyaluronate group (15 cases) according to Doll grouping method. After all groups were treated for 4 weeks, the changes of concentration of IL-1β and TNF-α was detected before and after the therapy Results After the treatment, the concentration of IL-1β and TNF-α in Zhuangu granule group was significantly lower than the other two groups (Sodium Hyaluronate and sulphuric Glucosamine group). Conclusion Zhuangu Granule could influence the concentration of IL-1β and TNF-α in patients of knee degenerated osteoarthritis.
9.Quality control of human ASPP2 recombinant adenovirus
Shuang WANG ; Jianji XU ; Xiaoni LIU ; Dexi CHEN
Chinese Pharmacological Bulletin 2016;32(6):881-884,885
Aim Toanalyzethekeyqualityandestablishmeth-ods for essential quality control of human recombinant ASPP2 adenovirus.Methods TheviralstructuralgeneofE2Bandtar-get gene of ASPP2 were identified by PCR;The number of virus particles was measured by UV-SDS methods;Infectious titer was determined by TCID50 assay;Target protein of ASPP2 was ob-served by Western blot assay;The biological effects of recombi-nant adenovirus on liver cancer cells were evaluated by MTT as-say;A549 cells were used to check replication of the competent adenovirus(RCA)by the observation of the cytopathic effect. Results PCRanalysisofE2BandASPP2wasinconsistent with theoretical values;Particle numbers of virus were 5. 6 × 1012 VP/mL,infectious titer was 2 ×1011 IU/mL and specific activity was 3. 5%;ASPP2 protein expression could be detected when cells were infected with virus for 24 h;Growth inhibition of liver cancer cells could be found by adding recombinant ASPP 2 adenovirus;The level of RCA was less than 1 RCA/3. 0 ×1010 VP,in line with the standards of China Food and Drug Adminis-tration(SFDA).Conclusion Thequalitycontrolmethodswere established aiming at key characters of human recombinant AS-PP2 adenovirus,which may provide foundations for its quality standard and future applications.
10.Automated biometry of human ocular anterior segment based on spectral domain optical coherence tomography
Sisi, CHEN ; Dexi, ZHU ; Qingkai, MA ; Meixiao, SHEN
Chinese Journal of Experimental Ophthalmology 2016;34(4):345-350
Background Ultra-long scan depth OCT can achieve imaging of full range of human ocular anterior segment.However,the measurement of the dimension of anterior segment from the OCT image with high speed and precision is a challenge at present.The software of automatic data processing is still lack in analyzing spectral domain OCT.Objective This study was to perform the automatic biometry and data processing of human ocular anterior segment OCT image by using self-developed automatic detection software and evaluate the accuracy and repeatability of this method.Methods Twenty eyes of 10 normal subjects were included in Eye Hospital of Wenzhou Medical University from June to July 2013.The OCT image of anterior eye segments were obtained with custom-made ultra-long scan depth OCT under the informed consent.Anautomatic software algorithm was developed for the biometric measurement on these OCT images,including boundary segmentation,image registration and optical correction of OCT images.The boundary segmentation algorithm utilized the axial gradient information of OCT images and the shortest path search principal based on the dynamic programming to optimize edge finding.Central corneal thickness (CCT),anterior chamber depth (ACD),pupil diameter (PD),lens thickness (LT),radius of lens anterior curvatures (LAC) and radius of lens of posterior curvatures (LPC) were automatically and manually measured,and the validity of automatic detection algorithm was assessed by calculating the intraclass correlation coefficient (ICC) between the automatic and manual measurements,and the repeatability was validated by calculating the coefficient of repeatability (COR) between repeated measurement.This study was approved by the Ethic Committee of Wenzhou Medical University and informed consent was obtained from all subjects.Results There were no significant differences in the results of CCT,ACD,PD,LT,LAC and LPC between the automatic and manual measurements (P =0.205,0.167,0.285,0.127,0.102,0.074).The results were consistent between automatic and manual measurements (all at ICC>0.75).The repeated measurement values were consistent in CCT,ACD and LT in both automatic and manual modes (all at ICC>0.75).The reproducibilities of automatic biometry in PD and LAC (ICC =0.793,0.872;COR =2.90,5.79) were better than those of manual mode (ICC =0.631,0.579;COR =5.62,10.46);while the reproducibility of automatic biometry in LPC (ICC =0.663;COR =6.17) was lower than that of manual mode (ICC =0.794,COR =4.79).Conclusions Self-developed automatic detection software appears to be accurate and repeatable in measuring dimension of spectral domain OCT images.This automatic software algorithm can be used for the biometry and monitor of human ocular anterior segment.