1.Comparison of ELISA and colloidal gold immunochromatographic assay for detection of serum anti-CCP antibody in the diagnosis of RA
Weihua TIAN ; Wenyuan MA ; Shasha LI
International Journal of Laboratory Medicine 2015;(11):1528-1529
Objective To evaluate the diagnostic values of enzyme‐linked immunosorbent assay (ELISA ) and colloidal gold im‐munochromatographic assay in detecting serum anti‐cyclic citrullinated peptide(anti‐CCP) antibody .Methods Colloidal gold immu‐nochromatographic assay and ELISA were used to detect serum anti‐CCP antibody in 110 RA patients and 110 healthy cases . Results The data were analysed with the paired Chi‐Square Test (χ2 = 174 .354 ,P < 0 .01) ,the difference was significant .The K ap pa value was 0 .890(P< 0 .01) ,indicating that the coincidence between the two kinds of methods was good .The sensitivity , speciality of ELISA were 83 .64% and 92 .73% respectively .Conclusion In detecting serum anti‐CCP Antibody ,there was dife‐rence between colloidal gold immunochromatographic assay and ELISA according to statistics analysis .The sensitivity and speciality of ELISA were higher than those of colloidal gold immunochromatographic assay .
2.Combined detection of anti CCP antibodies,AKA and APF in the diagnosis of rheumatoid arthritis
Weihua TIAN ; Wenyuan MA ; Shasha LI
International Journal of Laboratory Medicine 2016;(2):150-152
Objective To investigate the diagnostic value for rheumatoid arthritis(RA) by using combined detection of anti‐cy‐clic citrullinated peptide antibody (anti CCP ) ,anti keratin antibody (AKA ) and the antiperinuclear factor (APF ) in serum . Methods A total of 110 RA patients(RA group) ,50 patients with other autoimmune diseases(non RA group) and 110 healthy subjects (control group) were enrolled in the study .The concentrations of AKA ,APF were detected by using indirect immunofluo‐rescence assay and anti CCP by using ELISA .Results The positive rates of anti‐CCP ,AKA ,APF in RA group were higher than those in non RA group and control group(P<0 .05) .In the series detection of the three indicators ,the sensibility and specificity were 44 .55% and 99 .38% respectively ;in the parallel detection of the three indicators the sensibility and specificity were 93 .64%and 85 .63% respectively .Conclusion Anti CCP detection exhibits relatively higher sensitivity and specificity in the diagnosis of RA .Series detection of the 3 indicators can improve the specificity ,reduce the rate of misdiagnosis;parallel detection of the 3 indica‐tors can improve the sensitivity ,reduce the rate of misdiagnosis .The Combined detection of anti CCP ,AKA and APF has better di‐agnostic efficiency than single detection .
3.Correlation of Serum Hs-CRP, D-dimmer and Lp-PLA2 Levels with Vulnerable Plaque of Coronary Artery Atherosclerosis in Patients with Coronary Heart Disease
Derong ZHUANG ; Shenghu HE ; Dinghua CAI ; Wenyuan WANG ; Long TIAN
Progress in Modern Biomedicine 2017;17(26):5131-5133
Objective:To investigate the correlation of serum hs-CRP,D-dimmer and Lp-PLA2 with vulnerable plaque of coronary artery atherosclerosis in patients with coronary heart disease.Methods:Selected 106 cases of patients in our hospital from January 2014 to December 2015,all taken coronary angiography and intravascular ultrasound.Divided into three groups according to the results of the examination,the levels of serum hs-CRP,D-dimmer and Lp-PLA2 were examined and compared,and the correlation with fiber cap thickness,plaque eccentricity index,and vascular remodeling index were tested by Pearson correlation analysis.Results:Serum levels of hs-CRP,D-dimmer and Lp-PLA2 of vulnerable plaque group and stable plaque group were significantly higher than that of the control group (P<0.05),and the serum levels of hs-CRP,D-dimmer and Lp-PLA2 of vulnerable plaque group were significantly higher than that of stable plaque group (P<0.05);hs-CRP was negative correlated with the thickness of fibrous cap (r=-0.712,P<0.05),and positive correlated with eccentric plaque index and vascular remodeling index (r=0.813,0.756;D-,P<0.05),D-dimmer was negative correlated with the thickness of fibrous cap (r=-0.654,P<0.05),and positive correlated with eccentric plaque index and vascular remodeling index (r=0.912,0.853,P<0.05);Lp-PLA2 was negative correlated with the thickness of fibrous cap (r=-0.796,P<0.05),and positive correlated with eccentric plaque index and vascular remodeling index (r=0.836,0.729,P<0.05).Conclusion:Hs-CRP,D-dimmer and Lp-PLA2 have high correlation with vulnerable plaque in coronary artery disease,can be used as reference indexes for assessing the instability of coronary atherosclerotic plaque.
4.Exploration on clinical pharmacology teaching
Hong JIANG ; Wenyuan TIAN ; Shumin CHEN ; Yanmin CHEN
Chinese Journal of Medical Education Research 2006;0(07):-
Clinical pharmacology is a cross subject of clinical medicine sciences and basic pharmacology.Only by making a lot of efforts to teach clearly,newly and lively,can we increase the students'interest and improve the teaching quality.
5.Correlation studies of rCBV with VEGF protein expression and MVD in gliomas
Benqiang YANG ; Jianming TIAN ; Lijuan ZHOU ; Wenyuan LIU ; Changqun GUAN ;
Chinese Journal of Radiology 2001;0(04):-
Objective To investigate the correlation of rCBV with vascular endothelial growth factor (VEGF) protein expression and microvessel density (MVD) in gliomas Methods MR examinations were performed preoperatively in 46 patients with suspected supratentorial gliomas All the 46 cases were proved by operation and pathology Immunohistochemical stain methods were used to demonstrate the situation of VEGF protein expression and quantitatively measure the MVD in gliomas The procedures of MR examinations included plain MR scan, PWI and routine contrast enhanced MR scan The pulse sequence of PWI was single shot GRE EPI T 2WI The CBV maps were calculated from the original data of perfusion images and the maximum rCBV of gliomas was acquired from CBV maps through measurement on the region of interest (ROI) According to the situation of VEGF protein expression, all the 46 cases were divided into two groupsincluding positive VEGF protein expression group and negative VEGF protein expression group Mann Whitney U test was used for comparing the difference between the two groups Spearman′s rho correlation analysis was used for observing the correlation between maximum rCBV and MVD in gliomas Results Of the 46 cases; 12 cases were astrocytomas, 3 were oligodendrogliomas, 1 was mixed glioma, 14 were anaplastic astrocytomas, and 16 were glioblastomas multiforme The maximum rCBV value in VEGF(-) group ( n =14) and VEGF(+) group ( n =32) ranged from 0 33~6 63 and 1 03~10 68, with median of 3 08 and 5 95, respectively The difference in maximum rCBV between the two groups was statistically significant ( Mann Whitney U test | z| =2 638, P
6.Clinical observation of glucose metabolism disorders in elderly patients with obstructive sleep apnea disorder
Qiang ZHANG ; Wenyuan GAO ; Weisan ZHANG ; Jianli TIAN ; Yun ZHANG
Chinese Journal of Geriatrics 2013;(5):493-495
Objective To explore the correlation between obstructive sleep apnea hypoventilation syndrome (OSAHS)and glucose metabolism disorders in patients without diabetes mellitus.Methods A total of 88 patients with OSAHS but without diabetes mellitus from 2009 to 2011 in our hospital were selected and the pulse oximeter were used to measure the oxygen saturation.Patients were divided into 2 groups:the mild OSAHS group (n=46) and the severe OSAHS group (n=42).The age-and body mass index (BMI) matched control patients without OSAHS (control group,n =48) were randomly selected.The medical history,age,body height and BMI were recorded.The levels of fasting blood glucose,glycated hemoglobin (HbA1c),cholesterol,triglyceride and low density lipoprotein cholesterol were determined.Results There were significant differences in the numbers of respiratory disorders,respiratory disturbance index,average length of apnea,the longest apnea time,low-oxygen frequency,oxygen index,the time of oxygen saturation (SaO2) below 90%,minimum SaO2 and mean SaO2 between the OSAHS group and the control group (F=2.71,2.89,1.94,2.30,2.93,2.27,3.66,3.06,1.82,respectively,all P<0.05).There were differences in the levels of fasting blood glucose,postprandial blood glucose,HbA1c,cholesterol,triglycerideand low density lipoprotein cholesterol between the three groups(F=1.81,1.85,2.16,1.77,2.24,2.19,respectively,all P<0.05).Conclusions The severe degree of OSAHS has the correlation with the levels of glycated hemoglobin and blood glucose,which can provide a basis to observe the duration of diabetes mellitus and to predict the risk of cardiovascular diseases.
7.Observations on therapeutic outcome of operation combined with hyperthermic intraperitoneal lavage chemotherapy in treatment of stages Ⅲ_b and IV gastric cancer
Shengxiang WANG ; Hongbing CHEN ; Wenyuan CHEN ; Jisheng WANG ; Fade SU ; Haiping TIAN
Chinese Journal of General Surgery 1997;0(04):-
Objective To discuss the effect of intra-operative and post-operative hyperthermic intraperitoneal lavage chemotherapy for Ⅲb and IV gastric cancer on post-operative peritoneal metastasis and survival rate.Methods The clinical data of 31 cases of gastric cancer(control group)who underwent operation only and 50 cases(chemotherapy group)who receved operation combined with intra-operative and post-operative hyperthermic intra-peritoneal lavage chemotherapy were comparatively studied.Results The survival rate of control group after 2 years and 3 years was lower than that of the chemotherapy group,and the intraperitoneal recurrence raue of cootrol group after 2 years and 3 years was higher than that of chemotherapy group.Conclusions Intra-operative and post-operative hyperthermic intraperitoneal lavage chemotherapy for gastric cancer has important significance in prevention and treatment of peritoneal metastasis and can improve survival rate.
8.Study on comparation of three methods for anti-double-stranded DNA antibody and diagnostic value of joint detection in systemic lupus erythematosus
Yuhong YANG ; Weihua TIAN ; Bangneng ZHANG ; Sitong ZHOU ; Fujun XING ; Wenyuan MA ; Shaohua YANG
International Journal of Laboratory Medicine 2016;37(5):588-590
Objective To analyse the differences of indirect immuno‐fluorescence (IIF) ,enzyme‐linked immunosorbent assay (ELISA) and immunoblotting technique(IBT) for the determination of anti‐dsDNA antibody ,and evaluate the value of joint detec‐tion of the three methods for diagnosing systemic lupus erythematosus(SLE) .Methods From January 2012 to March 2015 ,50 ca‐ses of patients with SLE ,100 cases of patients with other autoimmune disease(AID)and 100 healthy individuals were selected .Ser‐um levels of anti‐dsDNA antibody were detected by using IIF ,ELISA and IBT respectively .Then ,compared the sensitivity and spe‐cificity of the three methods ,and analysed the sensitivity and specificity of joint detection .Results The IIF method had the highest specificity(99 .5% ) ,while ELISA had the highest sensitivity(74 .0% ) .There were statistically significant differences in the positive detection rates of serum anti‐dsDNA antibody in patients with SLE between IIF and ELISA ,IIF and IRT ,ELISA and IBT(χ2 values were 11 .435 ,13 .994 and 4 .539 ;P<0 .05) ,and the Kappa values were 0 .411 ,0 .522 and 0 .278 respectively .The specificity of three methods joint in series was increased to 99 .5% ,and the sensitivity of parallel combined detection of the three methods was in‐creased to 82 .0% .Conclusion Among the three methods for detecting anti‐dsDNA antibody ,ELISA has the highest sensitivity , and IIF has the highest specificity .Moreover ,joint detection could increase the sensitivity and specificity .
9.An experimental investigation of deep burn by constant low heat.
Wenyuan MA ; Cheng HUO ; Shemin TIAN ; Ping CAO
Chinese Journal of Burns 2002;18(2):99-101
OBJECTIVETo investigate the basic pathogenetic rule and mechanism of deep burn by constant low heat.
METHODSAnimal burn model inflicted by constant low heat was established as follows. (1) The rats were randomly divided into groups in terms of temperature and duration of contact. The burn wound formation process, the skin tissue density and pathomorphological changes in the rats were observed after burn was produced on the back by contacting heat source constantly. (2) The subcutaneous temperature of the back was monitored at different time and temperatures of heat contacting by placing the thermometer under the fascia of the rat back.
RESULTS(1) The time of burn wound formation was shortened and the injury degree deepened along with the increase in the contact temperature. The rat skin density exhibited irregular hyperbola or triple curves. (2) The subcutaneous temperature exhibited a parabolic curve with fixed experimental conditions.
CONCLUSION(1) The sharp increase in subcutaneous temperature leading to degeneration and necrosis might be the primary cause of deep burn. (2) The regularity of the skin tissue injury was the result of multiple effects of heat-origin injury, increase of capillary permeability and the change in tissue mass.
Animals ; Burns ; etiology ; Female ; Hot Temperature ; adverse effects ; Male ; Models, Animal ; Rats ; Rats, Wistar ; Severity of Illness Index ; Skin ; pathology ; Time Factors ; Wounds and Injuries ; etiology
10.Investigation of the vancomycin trough concentration in elderly patients with se-vere infection
Shumin CHEN ; Wenyuan TIAN ; Meng BIAN ; Jie ZHANG
Journal of Pharmaceutical Practice 2014;(3):216-219
Objective To investigate the vancomycin trough concentration in elderly patients with severe infection and provide references for clinical use of drugs effectively .Methods According to the Ccr of elderly patients (56 cases), who were ≥65 years old, the patients were divided into two groups , one with Ccr≥50 ml/min, which named group A , the other with Ccr between 20 ml/min and 50 ml/min, which named group B .The use of vancomycin , vancomycin steady-state plasma trough concentration and the differences of renal function were analyzed before and after in both two groups .Results There were 31cases of patients in group A (25 cases of them use vancomycin 1 g,q 12 h;other 6 cases use 0.5 g,q 12 h), 25 cases of patients in group B (15 cases of them use vancomycin 1 g, q 12 h;other 10 cases use 0.5 g,q 12 h) .The percentage that the trough concentration of the patients who use two different scheme of using drugs in group A was between 10 mg/L and 20 mg/L is 12%(3/25) and 66.67%(4/6).The percentage that the trough concen-tration of the patients who used two different scheme of using drugs in group B was between 10 mg/L and 20 mg/L is 20%(3/15) and 60%(6/10).The percentage that trough concentrationis more than 20 mg/L is 73.33%(11/15) and 30%(3/10).The serum creat-inine value of the 15 patients of all cases except for group B of which vancomycin dosage was 1 g, q 12 h had significantly risen after using the drug(P<0.05).The urea nitrogen had no obvious change (P>0.05).The serum creatinine value and urea nitrogen of oth-er patients had no significant change after using the drug (P>0.05).Group B had kidney toxicities observed in 5 patients, the dosage of vancomycin was 1 g, q 12 h, valley concentration >30 mg/L.There was no kidney toxicities observed in group A .Conclusion The use of vancomycin in elderly patients must depend on their Ccr .If the Ccr was larger than 50 ml/min, the use of vancomycin should be 1 g,q 12 h, and the Ccr was between 20 ml/min and 50 ml/min, the use should be 0.5 g.In addition, blood trough concentration need to be paid more attention in elderly patients in order to regulate the regimens according to the individual differences .