1.In vitro antifungal activity of closantel against Candida albicans
Wenfeng CHEN ; Ziping ZHANG ; Bo CHENG
Chinese Journal of Dermatology 2012;45(8):549-552
Objective To determine the in vitro antifungal effects of closantel against Candida albicans.Methods A microdilution method was used to determine the minimum inhibitory concentration (MIC)of fluconazole alone and in combination with closantel against Candida albicans standard strain CAF-2.Ten strains of Candida albicans were cultured in RPMI-1640 liquid culture containing 10% calf serum with or without the presence of closantel at 16 mg/L,followed by the observation of hypha formation.Transmission electron microscopy (TEM) and scanning electron microscopy (SEM) were performed to observe the ultrastructure of Candida albicans CAF-2 strain after exposure to closantel at 16 mg/L for 24 hours.Results Closantel could inhibit the growth of Candida albicans,and enhance the antifungal effect of fluconazole against Candida albicans in vitro.The percentage of Candida albicans forming hypha was 91.2% ± 3.9% in untreated Candida albicans,significantly higher than that in closantel-treated Candida albicans (29.8% ± 5.1%,t =30.24,P < 0.05).As TEM showed,closantel-treated Candida albicans gave a round,oval or pleomorphic appearance,with an irregular budding from the cell surface.Further more,the electron dense layer in the outer layer of cell wall was absent or unevenly distributed,the transparent layer was irregularly thickened,some cell membrane was locally disrupted or collapsed,and intracellular vacuoles increased after closantel treatment.Scanning microscopy revealed a rough surface,sparse and irregular budding of Candida albicans after treatment with closantel.Conclusion Closantel exhibits a promising anti-Candida albicans property in vitro.
2.Genetic polymorphisms of DNA repair genes XPD, XPC, and XRCC4 in relation to colorectal cancer susceptibility
Sha ZHANG ; Ziping CHEN ; Wenjun DU ; Hongchao XIONG ; Changqing XU
Chinese Journal of Clinical Oncology 2017;44(8):365-370
Objective:To investigate the association of XPD rs13181 (codon751A/C, Lys751Gln), rs238406 (codon156C/A, Arg156Arg), XPC rs2279017 (i11C/A), and XRCC4 rs3734091 (codon247T/C, Ala247Ser) polymorphisms with colorectal cancer (CRC) susceptibility. Methods:A total of 338 patients with CRC who were treated at the Beijing Cancer Hospital from April 2013 to January 2016 (case group) and 315 healthy controls (control group) were genotyped using TaqMan technology. Results:The genotype GT and G alleles of XPD rs13181 increased the risk of CRC (GT>TT, adjusted OR=1.69, 95%CI=1.15-2.47, P=0.007;G>T, adjusted OR=1.77, 95%CI=1.19-2.64, P=0.005). The genotype GT and T alleles of XRCC4 rs3734091 increased the susceptibility of CRC (GT>GG, adjusted OR=9.02, 95%CI=5.61-14.50, P<0.001;T>G, adjusted OR=4.06, 95%CI=2.49-6.61, P<0.001). Analyses of XPD rs13181 and rs238406 indicated that the haplotype GT significantly decreased the risk of CRC (adjusted OR=0.39, 95%CI=0.18-0.85, P=0.018). Moreover, the combinations of the XPC rs2279017 G allele and the XRCC4 rs3734091 T allele (adjusted OR=28.43, 95%CI=6.85-117.95, P<0.001) and the XPD rs13181 G allele and the XRCC4 rs3734091 T allele (adjusted OR=10.24, 95%CI=4.69-22.35, P<0.001) exhibited significantly increased CRC risk. Conclusion:The polymorphisms of XPD rs13181 and XRCC4 rs3734091 increased the risk of CRC.
3.Inhibition of angiogenesis inhibitor SU5416 on growth and metastasis of experimental rat pancreatic cancer
Lizhi SHI ; Zhaochun WANG ; Ziping CHEN ; Guihua ZOU ; Jian SUO
Chinese Journal of General Surgery 2001;0(07):-
Objective To study the effects of angiogenesis inhibitor SU5416 on the growth and metastasis of pancreatic cancer in SD rat model. Methods Dimethylbenzanthracine (9 mg) (DMBA),was implanted into the parenchyma of Sprague Dawley rat pancreas to induce pancreatic cancer. Rats with established pancreatic carcinoma were randomly divided into 4 groups (15 rats each) to receive every the other day for consecutive 13 weeks before sacrifice peritoneal cavity injection of: Normal saline (control),5-fluorouracil 30 mg?kg -1 (5-Fu group),SU5416 16 mg?kg -1 (SU5416 group),and both 5-Fu and SU5416(combined treatment group). Tumor weight,inhibition rates,intratumoral microvessel density (MVD),apoptotic index (AI) and metastasis were evaluated. Results Tumor weight was (1.15?0.21) g,(0.68?0.42) g,(0.31?0.11) g,(0.19?0.06) g respectively;the inhibition rate was 0,48%,80%,85% respectively;the intratumoral microvessel density (MVD) was (12.3?3.2),(11.4?3.8),(2.1?1.5),(1.8?1.1) respectively;The apoptotic index (AI) was (2.64?1.86)%,(5.71?3.14)%,(13.21?4.26)%,(21.12?7.15)% respectively. Peritoneal metastasis was significantly less severe in 5-Fu group,SU5416 group and combined group than that in control group(83% versus 46%,25% and 0) ( P
4.The Investigation of venous blood cell reference interval for 3-14 years old healthy children in Nanhai district of Foshan city
Zongbo CHEN ; Guoxuan LI ; Biyun ZHOU ; Ziping LI
International Journal of Laboratory Medicine 2014;(8):1005-1006
Objective To establish the reference interval of 3-14 years old children in Nanhai district of Foshan city .Methods 2 032 cases of 3-14 years old healthy children were detected and analyzed using MINDRAY BC-5800 automatic blood cell analy-zer .The levels of WBC ,RBC ,Hb ,PLT ,Hct ,MCV ,MCH ,MCHC ,RDW were analyzed .Results The levels of WBC ,RBC ,Hb , PLT ,Hct ,MCV ,MCH ,MCHC ,RDW in 2 031 cases were non normal distribution .The levels of Hb ,Hct had no statistical signifi-cance between male children and female children (P>0 .05);The levels of WBC ,RBC ,PLT ,MCV ,MCH ,MCHC ,RDW had statis-tical significance between male children and female children (P<0 .05) .Conclusion It is very important to establish the reference interval of 3-14 years old children in Nanhai district of Foshan city .
5.Clinical study of osteoporosis in patients with liver cirrhosis following hepatitis B virus infection
Yiguo WANG ; Qian LIU ; Wenqi WANG ; Ziping CHEN ; Mingxian YAN
Chinese Journal of General Practitioners 2002;0(01):-
Objective To study the pathogenesis of osteoporosis in patients with liver cirrhosis following hepatitis B virus(HBV) infection(HBV-liver cirrhosis).Methods Bone mineral density(BMD) was measured by NM-300 sigle-energy X-ray acsorptiometry system for 61 patients with HBV-liver cirrhosis and 30 age-matched healthy controls.Serum levels of calcium regulatory hormones(CRH),1,25-dihydroxycholecalciferol [1,25(OH)_2D_3],parathyroid hormone(PTH),calcitonin(CT),osteocalcin(BGP),interleukin-1?(IL-1?),interleukin-6(IL-6) and tumor-necrosis factor-?(TNF-?),and urine level of crosslaps were measured in these patients and controls.Patients with HBV-liver cirrhosis were divided into two groups,osteoporotic and non-osteoporotic,based on their BMD in the ulna and radius,for comparison.Results BMD of the ulna and radius in patients with HBV-liver cirrhosis were significantly lower than those in controls.Serum levels of 1,25(OH)_2D_3 and BGP in patients with HBV-liver cirrhosis were significantly lower than those in controls,and much lower in osteoporotic group than that in non-osteoporotic one.While urine level of crosslaps increased significantly in patients with HBV-liver cirrhosis than in controls, much more increased in the those with osteoporosis than those without osteoporosis.Serum level of 1,25(OH)_2D_3 correlated with serum levels of BGP and BMD of the ulna and radius.Urine level of crosslaps correlated inversely with BMD of the ulan and radius in osteoporotic patients,but not in non-osteoporotic ones.Serum levels of IL-1?,IL-6 and(TNF-?) and urine level of crosslaps increased significantly in patients with HBV-liver cirrhosis than in controls,as well as increased significantly in those with osteoporosis than in those without osteoporosis.Serum levels of IL-1?,IL-6 and TNF-? and urine level of crosslaps correlated inversely with BMD of the ulna,particularly more significantly in those with osteoporosis than those without osteoporosis.Conclusions Two factors,less osteogenesis and more osteolysis,existed in patients with HBV-liver cirrhosis.Serum level of 1,25(OH)_2D_3 and serum levels of IL-1?,IL-6 and(TNF-?) played an important role in weakened bone formation and in increased bone resorption,respectively.Adequate supplementation of vitamin D_3 and reducing serum levels of IL-1?,IL-6 and TNF-? may be very important for prevention and treatment of hepatic bone disease.
6.FORMULA OF SENSOR OF ZWF-4 A PARTICLE ANALGZER FOR INJECTION
Kechai WU ; Ziping HU ; Huifa CHEN ; Xiangjian LIU ;
Chinese Medical Equipment Journal 1989;0(03):-
The artile introduced aformula that that is derived electrical re- sponse from particles size when it pass through aperture according to the principe.The result is identical with the coulter's formula and it has universality.
7.A study on diagnostic value of serum human epididymis protein 4 detection for ovarian cancer
Zongbo CHEN ; Zhanze CHEN ; Guoxuan LI ; Biyun ZHOU ; Weiqi LIU ; Ziping LI
International Journal of Laboratory Medicine 2014;(9):1129-1130,1133
Objective To investigate the diagnostic value of serum human epididymis protein 4 (HE4 ) for ovarian cancer . Methods Electrochemiluminescence immunoassay was employed to detect the serum HE 4 of 91 patients with ovarian cancer (ovari-an cancer group) ,69 patients with benign ovarian disease(benign group) and 60 healthy people(control group) .Area under the curve(AUC ) of receiver operator characteristic (ROC ) curve for HE4 was calculated .Results Serum HE4 level [(146 .81 ± 81 .29)pmol/L] of patients in ovarian cancer group was significantly higher than those in control group [(43 .16 ± 25 .64) pmol/L] and benign group[(59 .86 ± 39 .87) pmol/L](P<0 .01) .Set serum HE4≥140 pmol/L as positive cutoff value ,the diagnostic sensi-tivity of serum HE4 detection for ovarian cancer was 82 .4% (75/91) ,specificity 89 .9% (62/69) and diagnostic efficiency 85 .6% . Serum HE4 levels of patients with serous adenocarcinoma ,endometrial adenocarcinoma or other ovarian cancer were markedly high-er than that with mucinous adenocarcinoma (P<0 .01) .Serum HE4 levels of patients with stage Ⅲ ,Ⅳ ovarian cancer were obvious-ly higher than those with Ⅰ ,Ⅱ stage(P<0 .01) .Conclusion HE4 detection has clinical value for the auxiliary diagnosis of ovarian cancer .
8.The improving effect of meditation training on elderly patients with postoperative cognitive dysfunc-tion recovering from operation for valvular heart disease
Yumei CHEN ; Shuying YAN ; Hui YAO ; Ziping MA ; Xingyuan GONG ; Yuanyuan CHEN
Chinese Journal of Behavioral Medicine and Brain Science 2016;25(12):1096-1099
Objective To investigate treatment of meditation training for elderly patients with cogni-tive disorder recovering from operation for valvular heart disease( VHD) . Method 67 elderly patients who were up to the inclusion criteria were divided into experiment group( n=34)and control group( n=33),by dropping coins according to the admission time.Both of the two groups accepted regular health education and mental nursing.Besides,the experiment group accepted meditation training 5 times a week. Montreal Cogni-tive Assessment (MoCA) was used to evaluate cognitive function before and after the treatment. Results ( 1) Ridit analysis showed the intervention effect of the experimental group was better than that of the control group( R=2.12, t=-2.48, u=0.02),and the difference was statistically significant(P<0,05).The total effec-tive rate of experiment group is 90.32%,while the rate of control group is 62.89%. (2)The score of MoCA for the experiment group(25.79±1.23)was higher than that of the control group(23.85±1.82)after 6 weeks intervention,and the difference was statistically significant( t=5.14,P<0.01).(3) The score of MoCA of the experiment group before the intervention (23.91±2.22)was lower than after 6 weeks intervention(25.79±1. 23),and the difference was statistically significant( t=-4.30,P<0.01).Conclusion Meditation training can effectively improve cognitive function of elderly patients recovering from operation for VHD.
9.The predictive value of mild renal insufficiency on the prognosis of patients with acute coronary syndrome
Jianhua ZHANG ; Yan XU ; Xuhua CHEN ; Mengzuo WU ; Ziping CHENG ; Bin CHEN
Chinese Journal of Internal Medicine 2013;52(12):1033-1036
Objective To investigate the predictive value of mild renal insufficiency on the endpoint events in patients with acute coronary syndrome (ACS).Methods A total of 552 patients with ACS were enrolled in the present study.According to the levels of estimated glomerular filtration rate (eGFR),patients were divided into two groups,normal renal function (eGFR≥90 ml · min-1 · 1.73 m-2) and mild renal insufficiency (60≤eGFR <90 ml · min-1 · 1.73 m-2).The primary and secondary events were collected and analyzed through the present prospective follow-up study.Results The patients in mild renal insufficiency group had a higher incidence of the primary endpoint events than normal renal function group [31 cases (12.6%) vs 15 cases (4.9%),P =0.001].There was no difference of the secondary endpoint events incidence in the two groups.The incidence rate of all-cause mortality [8.9% (22 cases) vs 2.2% (7 cases),P <0.001] and cardiac death [6.5% (16 cases) vs 1.3% (4 cases),P =0.001] was higher in mild renal insufficiency group,but there was no statistical difference of incidence rate of no fatal stroke and myocardial infarction in the two groups.The results of COX regression analysis showed that the incidence of primary endpoint events in patients with mild renal dysfunction was 2.265 folds (95% CI 1.076-4.771,P=0.031) of patients with normal renal function.Further analysis indicated that the predictive value of mild renal insufficiency was only for all-cause mortality (HR 3.118,95% CI 1.197-8.125,P =0.020),not for heart failure and revascularization.According to the Kaplan-Meier curves results,the incidences of the primary endpoint events (P =0.004) and all-cause mortality (P =0.001) were higher in mild renal insufficiency group than in normal renal function group.Conclusion Mild renal insufficiency has important predictive value for primary endpoint events in patients with ACS.
10.Transsphenoidal expanded to reach the tumor in central part of the skull base by microsurgical anatomy
Shengli CHEN ; Zhigang QIAO ; Hanwei ZHANG ; Ziping ZHANG ; Tao HU ; Chunhong WANG
Cancer Research and Clinic 2011;23(5):314-317
Objective To study the microsurgical anatomy of the extended transsphenoidal approach to the central skull base, and provide anatomical parameters for the surgical approach. Methods Forty wet skulls were dissected in detail via mimic extended transsphenoidal approaches under an operating microscope and an extended exposed operating microscope. Important structures and connections were observed, measured precisely and photographed. Dry skulls were used to observe and measure the osseous structures related to the approaches. Results The extended transsphenoidal approach can expand ahead, astern and laterally to the suprasellar intradural space by resecting bone and displaying the basafrontal lobe, pre-chaismatic space, optic chiasma cistern, anterior cerebral artery complex, the branches and cavernous sinus segment of the internal carotid artery, pons, basilar artery and its branches, posterior cerebral artery, and superior cerebellar artery. Conclusion The extended transsphenoidal approach can provide the new pathway for treating lesions of the central skull base.