1.ELECTROENCEPHALOGRAPHIC STUDIES OF CHINESE WOMEN VOLLEYBALL PLAYERS TAKING BICYCLING TESTS AT DIFFERENT LOADS
Chinese Journal of Sports Medicine 1983;0(04):-
0.5). It appears that both Load 1 and Load 2 accelerated the body metablism in the subjects, as evidenced by theadaptative rise in the frequency, amplitude and index of alpha waves. At a moderate load, the index of beta waves in the occipital region was 8.4% before the experiment, risingto 14.1% (P0.5)the 2-min interval. The increase in beta index in the occipital region indicates an increase of excitability of thecentral nervous system, and its return to normal after the 2-min interval signifies the adaptability of thesubjects.
3.Expression and cytotoxic effect of transmembrane form of human blood group A antigen mimotope vaccine in a malignant melanoma cell line B16
Dongzhi CEN ; Hui MENG ; Jiren ZHANG
Chinese Journal of Dermatology 2011;44(1):18-22
Objective To establish a stable cell line expressing transmembrane form of human blood group A antigen mimotope vaccine by transfecting malignant melanoma cell line B16, and to detect the cytotoxicity of the vaccine against melanoma cells. Methods Cultured B16 cells were classified into 4 groups, i.e.,P/F-M-pIRES group [transfected with the recombinant plasmid mimotope peptide/Fas-macrophage inflammatory protein (Mip)-pIRES], P/F-pIRES group (transfected with the recombinant plasmid mimotope peptide/FaspIRES), M-pIRES group (transfected with the recombinant plasmid Mip-pIRES), and pIRES group (transfected with the empty plasmid pIRES). B 16 cells were transfected through Lipofectamine 2000. Subsequently, RT-PCR and Western blotting were performed to detect the mRNA and protein expressions of the mimotope peptide/Fas fusion gene and Mip3β in transfected B16 cells. Cell counting kit-8 (CCK-8) was used to evaluate the vaccinemediated complement dependent cytotoxicity (CDC) and antibody-dependent cell-mediated cytotoxicity (ADCC)against B16 cells. Results RT-PCR yielded specific DNA fragments with expected size. Western blotting revealed the anti-A antibody-binding activity of the recombinant mimotope peptide/Fas fusion protein. Factor analysis indicated significant differences in CDC (F = 244.522, P < 0.01 ) and ADCC (F = 71.593, P < 0.01 )against B16 cells between the 4 groups. Group comparisons demonstrated more intense CDC and ADCC in P/FM-pIRES and P/F-pIRES groups compared with M-plRES and pIRES groups, stronger ADCC in P/F-M-pIRES group in comparison with P/F-pIRES group (F = 15.42, P < 0.05), but no significant difference in CDC was observed between M-pIRES and pIRES group. Conclusions The transmembrane form of human blood group A antigen mimotope vaccine could be stably expressed in B16 cells, and mediate ADCC and CDC against B16 cells in vitro.
4.The efficiency and safty of home-bleaching:A systematic review and Meta-analysis
Xiao CEN ; Xinqi HUANG ; Zhi ZHANG ; Xuan ZHANG
Journal of Practical Stomatology 2015;(3):384-388
Objective:To evaluate the efficiency and safty of home-bleaching.Methods:Randomised controlled trials on home-bleaching were searched using CBM,CNKI,Medline,EMBASE and Cochrane Library up to April,201 3.The articles were selected by inclusion criterion,qualified by Cochrane system and analysed by Meta method.Results:1 2 studies with 61 1 cases were finally includ-ed and analysed.The results showed that 1 0% carbamide peroxide (CP)produced better bleaching efficiency than 1 5% CP(MD, 0.21 ;CI:[0.03,0.38];Z =1 .92;P =0.002).Hydrogen peroxide(HP)at 35% lead to higher tooth sensitivity in office-bleaching than CP at 1 0% in home-bleaching(MD,-1 .68;95%CI:[-2.75,-0.61 ];Z =3.09;P =0.002);home-bleaching were asso-ciated with less tooth sensitivity than office-bleaching(MD,-2.64;95%CI:[-3.96,-1 .32];Z =3.93;P <0.000 1 ),while there was no significance of tooth sensitivity between home-bleaching using CP and HP (OR,1 .94;95%CI:[0.84,4.44];Z =1 .56;P =0.1 2).Conclusion:1 0% CP home-bleaching may produce better bleaching efficiency;home-bleaching is associated with less tooth sensitivity than office-bleaching.
5.Clinical application value of laparoscopic intraoperative cholangiography in laparoscopic cholecystectomy
Feng CEN ; Qiang YAN ; Guolei ZHANG ; Jun NI ; Yunhai WEI
Chinese Journal of Primary Medicine and Pharmacy 2015;(7):996-998
Objective To investigate the clinical application value of the laparoscopic intraoperative cholan-giography in laparoscopic cholecystectomy,and summarize the experience.Methods The clinical data of 169 cases of laparoscopic cholecystectomy intraoperative cholangiography were analyzed retrospectively.Results 169 patients were successfully completed,131 cases recovered well and no complications occurred after operation.29 patients showed hyperamylasemia,of which 3 patients had intractable hyperamylasemia,8 patients complicated with secondary acute pancreatitis,with fasting,gastrointestinal decompression,enzyme inhibition(plus somatostatin)and acid,analgesic, anti infection,rehydration treatment after remission.Conclusion Laparoscopic cholecystectomy intraoperative cholan-giography is a safe and reliable diagnostic technique,on the occurrence of biliary residual stones in prevention of post-operative prevention and timely detection of bile duct injury during operation and improves the success rate of repair of bile duct injury has important clinical value;control adaptation of intraoperative cholangiography has important clinical significance of reasonable application license.
6.A Systematic Review of the Therapeutic Effects of Intact Canal Wall Mastoidectomy and Open Mastoidectomy for Cholesteatoma Otitis Media
Tingting WU ; Cen ZHANG ; Tao PENG ; Kaiyu SUN
Journal of Audiology and Speech Pathology 2015;(6):637-642
Objective To carry out a meta-analysis on the published data to evaluate therapeutic effects of intact canal wall mastoidectomy and open mastoidectomy for cholesteatoma otitis media .Methods A comprehensive search was performed in VIP (1989-2015) ,WANFANG (1999-2015) ,CNKI (1994-2015) and CAJD databases to collect the randomized controlled trials (RCTs) on the intact canal wall mastoidectomy and open mastoidectomy treat cholesteatoma otitis media ,and to analyze the RCTs in meta -analysis method .Results 1 069 patients were analyzed in the 18 RCTs which met the inclusion criteria .Patients were followed up from 3 months to 7 years .The meta-analysis results suggested that ,compared with the open mastoidectomy group ,the patients had less operative time (test for overall effect :Z=15 .54 ,MD= -18 .36 ,95% CI(-24 .54 ,-12 .18) , P<0 .000 01) ,less dry ear time (test for overall effect :Z=8 .64 ,MD= -13 .90 ,95% CI(-17 .05 ,-10 .75) , P<0 .000 01) ,less complica‐tions (test for overall effect :Z=7 .63 ,OR=0 .19 ,95% CI(0 .12 ,0 .29) , P<0 .000 01) ,and more patients with decreased pure tone air conduction thresholds >10 dB (test for overall effect:Z=2 .83 ,OR=2 .47 ,95% CI(1 .32 , 4 .61) ,P=0 .005) ,more patients with air-bone gaps <20 dB(Z=3 .05 ,OR=1 .60 ,95% CI(1 .18 ,2 .17) ,P=0 .002) ,but the recurrent rate is not different significantly (test for overall effect :Z= 1 .92 ,OR =1 .87 ,95% CI (0 .99 ,3 .53) ,P=0 .05) .Conclusion The illness is suitable to be treated by using the two surgical ways while the intact canal wall mastoidectomy treatment takes less operative time ,dry ear time and complications ,and improve hearing more significantly than the open mastoidectomy ,but the recurrent rate is not different significantly for trea‐ting cholesteatoma otitis media .
7.Mutation of P927S in PRD1 gene mediates azole resistance in Candida glabrata
Cen JIANG ; Danfeng DONG ; Lihua ZHANG ; Xuefeng WANG ; Yibing PENG
Chinese Journal of Infectious Diseases 2014;32(6):325-329
Objective To investigate the role of PDR1 gene in azole-resistant Candida glabrata (C.glabrata).Methods Thirty-eight clinical isolates of C.glabrata were collected from five different hospitals.The minimal inhibitory concentrations (MIC) of azole antifungals including fluconazole,itraconazole and voriconazole against C.glabrata were determined by broth microdilution.Sequencing and amplification of PDR1 gene was achieved by real-time quantitative polymerase chain reaction (PCR).The mutation was cloned into an expression plasmid and then transferred into C.glabrata.The efflux of rhodamine 6G and drug sensitivity test were performed,and expressions of CDR1 and CDR2 were examined to verify function of mutation.Results Among these 38 isolates of C.glabrata,17 were resistant to at least one of azole antifungals.Moreover,mutations of PDR1 gene existed in every resistant isolates.Results of phenotyping test showed that in the isolate that expressed PDR1P927S,the expression of CDR1 and CDR2 were increased by 20.53 and 4.03 fold,respectively.And the fluorescence intensity of rhodamine 6G was decreased to 0.62 in efflux experiment.Conclusion P927S mutation of PDR1 gene could induce azole resistance of C.glabrata by increasing the expressions of CDR1 and CDR2,which results in drug resistance due to enhanced effect of efflux pump.
8.Parathyroid in situ exposure and protection in differentiated thyroid carcinoma surgery
Yu ZHANG ; Xueying CEN ; Guoqing ZHENG ; Qiang HUO
Chinese Journal of Endocrine Surgery 2016;10(2):166-169
Objective To study the application value of parathyrod in situ exposure and protection in differentiated thyroid cancer thyroid carcinoma (DTC) surgery. Methods 500 cases of DTC admitted from Jan. 2012 to Dec. 2014 were selected for the research. According to whether the parathyroid was anatomically exposed during the surgery, the patients were divided into experimental group (exposed group) and the control group (un-exposed group). Then, depending on tumor extent and risk factors, the experimental group were divided into group E1 (lateral affected glandular lobe, isthmus lobe resection and unilateral VI lymph node dissection )and E2 (total or subtotal thyroidectomy and bilateral VI lymph node dissection), while the control group were divided in-to group C1 (surgical treatment same as E1)and group C2 (surgical treatment same as E2). Patients’ postopera-tive nerve and muscle symptoms were observed, such as clinical manifestations of face, lips, hand and foot numb-ness or convulsions. Both preoperatively and postoperatively, patients’ parathyroid hormone (PTH) and serum calcium level indicators were detected before surgery and at the 1st, 3rd, 5th, 7th, 14th and 28th day after surgery. Results The lymph node metastasis rate and number between experimental group and the control group had statistical insignificance (χ2=1.02, 0.79, P=0.14, 0.96). The recurrence rate of the 2 groups had no significant difference during the follow-up (χ2=0.23, P=0.65). Group E1 was significantly lower than Group C1 in postopera-tive parathyroid function decline rate, incidence of hypocalcemia and parathyroid mistakenly cut rate. Group E2 was also obviously lower than Group C2 in all these aspects. The difference had statistical significance (P<0.05). Conclusion Parathyrod in situ exposure and protection assisted by direct vision of the magnifying glass can re-duce the mistakenly cut rate of parathyroid and the temporary hypoparathyroidism, which can effectively avoid the adverse effects caused by total thyroidectomy.
9.A pilot clinical study on quantitative evaluating the degree of diffuse fatty liver by acoustic radiation ;force impulse imaging in patients with T2DM complicated with NAFLD
Hua WEI ; Ying LU ; Huan CEN ; Jianxing ZHANG ; Bingli CHEN
The Journal of Practical Medicine 2016;32(12):1941-1944
Objective To investigate the influencing factors of the controlled virtual touch tissue quantification (VTQ) in liver of patients with type 2 diabetes mellitus (T2DM) complicated withnon-alcoholic fatty liver disease (NAFLD). Methods Two hundred and twenty-seven patients with T2DM complicated with NAFLD were enrolled in this study,and the shear wave speed of the liver was measured by VTQ. Levels of the fasting plasma glucose, glycated hemoglobin,total cholesterol three acids glyceride, low density lipoprotein, high density lipoprotein , aspertate aminotransferase , alanine aminotransferase , gamma glutamyl transpeptidase and uric acid were measured. The relationships among VTQ and the severity of NAFLD , and those quantitative indexes were analyzed. Results Univariate analysis showed that the value of shear wave speed was negatively correlated with age,duration of diabetes,INS and HDL-C,while was positively correlated with HbA1c and AST. Conclusion Age, sex and levels of serum HbA1c,INS,AST and HLD-C might affect the values of shear wave speed in patients with T2DM complicated with NAFLD.
10.Optimization of extraction technology of the polysaccharides from sporophyll of Undaria pinnatifida Suringar by orthogonal design
Liang ZHU ; Qing ZHANG ; Qinchang ZHU ; Yifei WANG ; Yinzhou CEN
Chinese Journal of Marine Drugs 2000;0(06):-
Objective To study the extraction technology of the polysaccharides from Sporophyll of Undaria pinnatifida Suringar and find out the optimum extraction condition.Methods The extraction technology was studied by the orthogonal design.Results The optimum extraction conditions were to add 50 times of water to the Undaria pinnatifida Suringar material at 90℃ for 4 hours.Conclusion This optimum extraction technology based on the orthogonal design was confirmed by the experiment and was available in the future research.