2.Evaluation of ELISA kit for detection of serum specific IgG antibodies against Taenia solium in diagnosis of human cysticercosis
Chuang CHEN ; Xingwang CHEN ; Jianzhong DENG ; Tiaoying LI
Chinese Journal of Schistosomiasis Control 2017;29(2):228-230
Objective To evaluate the ELISA kit for detection of IgG antibodies against Taenia solium cysticercus in hu-mans,so as to provide a reference for its application in clinical practice. Methods The sera collected from the patients with neurocysticercosis,echinococcosis,taeniasis and healthy people,respectively,were checked by ELISA for specific IgG anti-bodies against T. solium cysticercus,as described in the instruction of the kit. Results Of the 30 patients with neurocysticerco-sis at active stage,28 showed seropositive reaction,indicating a sensitivity of 93.33%. There were no positive reactions in the 100 healthy people. Two of the 42 persons with taeniasis were seropositive with an infection rate of 4.76%. Forty-one of the 60 persons with echinococcosis showed positive reactions,suggesting that the cross reaction rate of the kit with echinococcosis was 68.33%. Conclusions The assessed ELISA kit has a reasonably high sensitivity but a poor specificity,and the cross reaction rate with echinococcosis is very high. It is urgent to improve the sensitivity and specificity of the diagnostic kit for detection of T. solium cysticercosis in China.
3.MECHANISM OF IMMUNOMODULATORY ACTIONS OF TOTAL GLUCOSIDES OF PAEONY IN MICE
Xingwang WANG ; Wei WEI ; Mingzhu CHEN ; Shuyun XU
Chinese Pharmacological Bulletin 1986;0(06):-
Mechanism of Immunomodulatory actions of total glucosides of paeony ( TGP ) was studied by McAb indirect immunofluorescence. TGP 5 mg/( kg?d ) ip for 8d suppressed DTH, that was enhanced by cyclophosphamide( Cy), and decreased L3T4+/Lyt-2+ 〔 (Th/i)/(Ts /c) 〕 cell ratio in ICR mice .TGP 5 mg/ ( kg?d ) ip for 5d enhanced DTH that was suppressed by Cy, and increased the L3T4+/Lyt-2 + cell ratio in ICR mice. The same dose of TGP ip for 5d promoted the hemolysin production of spleen cells, that was suppressed by Cy, increased the L3T4+/Lyt-2 + cell ratio in BLAB/c mice. The results suggest that immunomodulatory actions of TGP might be brought about by altering Th/Ts cell ratio.
4.Expression of p-FRK and its prognostic analysis in non-small cell lung cancer patients
Li LI ; Yuling KOU ; Fei CHEN ; Xingwang SUN
Chinese Journal of Clinical and Experimental Pathology 2017;33(5):525-529
Purpose To investigate the expression of pFRK protein in non-small cell lung cancer (NSCLC) patients and to explore its prognostic value.Methods The expression of p-FRK protein in tumor tissues and corresponding adjacent normal pulmonary tissues from 162 NSCLC patients was detected by immunohistochemistry of EnVision two-step.The correlation among p-FRK expression,age,gender,clinicopathologic features,pTNM stage and metastasis of NSCLC patients was also analyzed.whether p-FRK could be used as an independent predictor of prognosis for patients with NSCLC was further determined.Results The positive expression rate of p-FRK in NSCLC tissues (51.9%) was significantly higher than that of adjacent normal lung tissues (11.7%) (P =0.001).The expression of p-FRK in NSCLC was significantly correlated with histopathologic type,lymph node status and pTNM stage (P <0.05).Kaplan-Meier survival analysis showed that there was a negative correlation between p-FRK positive rate and postoperative overall survival (x2 =17.849,P <0.001).Multivariate analysis showed that p-FRK expression was an independent prognostic factor for overall survival of NSCLC patients (HR =0.496,95% CI:0.295-0.836,P < 0.05).Conclusion As a novel NSCLC biomarker,the expression of p-FRK may predict a poor prognosis in the patients with NSCLC.
5.Initial clinic verification of internal target volume generated with four-dimensional CT and deformable registration
Jun YANG ; Xingwang GAO ; Xiaowu DENG ; Ming CHEN ; Fugen ZHOU
Chinese Journal of Radiation Oncology 2013;(1):80-83
Objective To study preliminary the accuracy of clinical target volume (CTV) and internal target volume (ITV) automatically generated by an in-house deformable registration software on fourdimensional CT (4DCT),and evaluate its feasibility of clinical application.Methods Clinic treated one lung cancer patient and one liver cancer patient were selected for the study.CTV was delineated by radiation oncologist according to a single respiratory phase image of 4DCT scanning,and then deformed to the other phases and generated the CTVdefm on each phase image.Differences between the CTVdefm and CTVmanu were then compared.A composite ITVcopm was created by overlapping all the CTVdefm of 10 phases and compared with the ITVMIP which was contoured on the maximum intensity projection (MIP) CT images,including the shape,volume and geometric center position of the ITV contour.Results For the tested lung case,average volume difference between the CTVdefm and CTV was (-2.59 ± 5.02)% for the all 10 phases,and the vector departure of the two ITV centers was (1.04 ± 0.89) mm.The ITVcomp almost completely matched the ITVMIP on the tested liver case with a volume difference smaller the 1% and only 1.4 mm vector departure between their geometric centers.Conclusion The validity of the CTVdefm and ITVcomp gained from automatic deformation of manual delineation reference based on 4DCT images were preliminary evaluated and proved to be good enough for clinic planning.
6.Comparison analysis of clinical features of varicella in pregnant women and outcomes of mothers and their newborns
Huihui ZENG ; Wei YI ; Zhihai CHEN ; Xingwang LI
Chinese Journal of Infectious Diseases 2015;(8):476-479
Objective To investigate the clinical features of varicella and the prognosis in pregnant women and their newborns .Methods Clinical data of pregnant women with varicella zoster virus (VZV) infection (n= 25) and their newborns hospitalized in Beijing Ditan Hospital from 1st Jan .2008 to 31st Dec .2014 were retrospectively analyzed and randomly compared to non‐pregnant women with VZV infection (n=50) .Clinical features and prognosis of varicella in pregnant women and their infants were analyzed .Chi‐square test was used for categorical data and t test was used for quantitative data .Results Time to rash scab of varicella in pregnant women was longer than non‐pregnant women ([10 .1 ± 2 .1] d vs [5 .6 ± 1 .4] d ,t=10 .941 ,P<0 .05) .The rate of bacterial infection in pregnant women was higher than non‐pregnant varicella women (72 .0% [18/25] vs 32 .0% [16/50] ,χ2 = 10 .761 , P < 0 .05) , with statistical significance .Among 25 cases of varicella pregnant women ,the pregnancy complications were observed in 3 cases of diabetes ,2 cases of premature rupture of membranes ,5 cases of anemia and 1 case of oligoamnios .Seven cases out of 25 pregnant women underwent parturition during fever and varicella period ,and 3 cases (12 .0% ) were complicated with intrapartum hemorrhage . Twenty five varicella pregnant women were all cured after antiviral and supportive treatment and gave birth to their babies ,with no abortion ,stillbirth or birth defects .No congenital varicella was observed in newborns .Of the 25 infants ,4 developed (16 .0% ) varicella within 2 weeks after birth and they were all born from mothers who developed varicella around delivery time .The clinical features of neonatal varicella presented with classic rash with no fever .The time to rash scab was longer (11 .0 ± 2 .1) d and antibody test for VZV was negative .All neonates were cured after antiviral and immunoglobulin treatment .Conclusions Longer duration of skin rash scab and higher rate of bacterial infections are the features of varicella in pregnant women .Intrapartum hemorrhage occurrs more commonly in pregnant women with varicella onset around delivery time .Varicella occurring during mid‐pregnancy may not increase the risk of neonatal birth defects after treatment .The newborns whose mothers with varicella onset during perinatal time especially around delivery time may suffer from varicella .The prognosis of neonatal period varicella is good after treatment .
7.Predictive value of the serum kaliuretic peptide in patients with severe sepsis concurrency atrial fibrillation and prognosis
Zhijun YAO ; Xingwang CHEN ; Huafeng ZHOU ; Houwang CHEN ; Huachu WU ; Zhao LI ; Jianbo LAI
Clinical Medicine of China 2016;32(5):407-411
Objective To evaluate the value of serum kaliuretic peptide (KP) in predicting atrial fibrillation (AF) and its prognosis,by detecting serum KP levels in patients with severe sepsis.Methods Fifty-six patients with severe sepsis in Integrated Intensive Care Unit of Shajing Hospital of Shenzhen Affiliated to Guangzhou Medical University from January 2014 to August 2015 were collected as the case group.In addition 20 cases health checkup for the same period were collected as the control group.Serum KP were determined in all patients in the case group every day for 1 week after admission,meanwhile the APACHE-Ⅱ score was undertook,then according to heart guardianship and electrocardiogram whether occurrence of AF the case group were divided into AF group and non AF group.According to survival after 28 days again divided into survival group and death group,the relationship of serum KP with AF and the prognosis were analyzed.Serum KP was detected on the day of physical examination in the control group.Results (1) The incidence of AF was 32.1%(18/56) in 56 patients with severe sepsis.(2)Serum KP in admission to hospital in case group was significantly higher than that in the control group((234.2±73.5) pmol/L vs.(169.6±65.4) pmol/L;t =3.47,P =0.001).Serum KP in admission to hospital in AF group was significandy higher than that in the non AF group((306.0±35.6) pmol/L vs.(200.2±61.2) pmol/L;t =6.79,P =0.001).Serum KP in AF group before 1 day of the occurrence AF was significantly higher than of the admission to hospital ((339.2± 30.5) pmol/L vs.(306.0±35.6) pmol/L;P=0.007),serum KP on the day of occurrence AF was significantly higher than before 1 days of the occurrence AF((390.6±47.8) pmol/L vs.(339.2±30.5) pmol/L;P=0.006),there was no difference between the serum KP after 1 days of occurrence AF and on the day of occurrence AF(P=0.246),but began to gradually declining.Serum KP and APACHE-Ⅱ score in death group on admission to hospital were significantly higher than survival group((301.1±42.0) pmol/L vs.(199.8±61.5) pmol/L,(26.1±2.8) points vs.(19.9±4.3) points;t =6.44,5.67;P<0.001).(3) Linear correlation analysis showed that serum KP on admission to hospital was positively correlated with the occurrence of AF(r=0.679,P=0.010).According to AF grouping,serum levels of KP on admission to hospital draw ROC curve,the serum KP of AUC was 0.908(95% CI:0.831-0.984),when the KP value was 351.5 pmol/L,the sensitivity of the occurrence AF was 89.9%,specificity of 97.4%.(4)Linear correlation analysis showed that serum KP on admission to hospital was positively correlated with death(r=0.659,P =0.010),according to prognostic grouping,serum KP on admission to hospital and APACHE-Ⅱ score ROC curve was drew,the serum KP of AUC was 0.893 (95% CI:0.811-0.974),when the KP value was 338.5 pmol/L,the sensitivity of death was 78.9%,specificity of 97.3%.Conclusion Early serum KP level can be used as an indicator to predict AF and prognosis in the patients with severe sepsis.
8.Effect of azelastine hydrochloride nasal spray combined with desloratadine to inflammatory factors, cell function and IgE of patients with allergic rhinitis
Xingwang RAO ; Qinjuan CHEN ; Xiaoyun CHEN ; Yue ZHANG ; Renyu LIN ; Zhisu LIAO
Chinese Journal of Biochemical Pharmaceutics 2016;36(9):42-44,48
Objective To explore the effect of azelastine hydrochloride nasal spray combined with desloratadine to inflammatory factors, cell function and IgE of patients with allergic rhinitis.Methods 92 cases of allergic rhinitis patients treated in the first affiliated hospital of wenzhou medical college hospital from June 2014 to December 2015 were divided into experimental group(n=46) and control group(n=46) according to the random number table method.The control group was given oral loratadine tablets, one piece per time, one time per day, while the experimental group was given azelastine hydrochloride nasal spray on the basis of the control group,each nostril one spray, one time in the morning and night.The clinical efficacy of two groups of patients would be observed after 4 weeks,ELISA would be used to detect serum levels of IFN-γ, IL-4, IL-8 and IgE level, and IFN-γ/IL-4 was the value of Thl/Th2,flow cytometry instrument was used to the determination of T cell subgroup CD4 +,CD8 + cells.Results 4 weeks after treatment,stuffy nose, nasal itching, runny nose, sneezing and nasal cavity change points are lower than before the treatment in both the two groups.Experimental group obviously lower than the control group, the difference was statistically significant ( P <0.05 ).The total effective rate of treatment group is higher than the control group,the difference was statistically significant(χ2 =4.389,P=0.036).The serum level of IFN-γis higher than before treatment in both the two groups.IL-4, IL-8 inflammatory factor levels were lower than before treatment,the experimental group was better than control group,the difference was statistically significant(P<0.05).CD4 +,CD8 +of T cells and Thl/Th2 values are higher than before the treatment in both the two groups,the experimental group was higher than control group, the difference was statistically significant ( P<0.05 ).Serum IgE levels were lower than before the treatment in both the two groups,the experimental group was lower than control group,the difference was statistically significant (P<0.05).Conclusion The therapy of azelastine hydrochloride nasal spray combined with desloratadine can improve the clinical effect of the treatment of allergic rhinitis,reduce inflammation,strengthen the body's immune function, improve thelevel of serum IgE.
9.In vitro study on anti-HBV effects and mechanism of hypericin
Tianyun LAN ; Hong FAN ; Yongbin CHEN ; Cuiping YANG ; Xingwang ZHAO ; Yan LI
Chongqing Medicine 2017;46(1):40-43,47
Objective To evaluate the anti-HBV effect of hypericin from the cellular level and to preliminarily explore its po-tential drug target point.Methods Liver cell line HepG2.2.15 cells secreting HBV particles were selected as the experimental ob-jects.Hypericin served as the HY group,lamivudine was taken as 3TC group and deionized water as the blank control group.The cells were grouped and administrated.The HBV-DNA copy level was measured at72 h after medication by Southern blot and fluo-rescent quantitative PCR;the inhibition rate of HBsAg and HBeAg was detected by using ELISA assay;the pgRNA expression level was tested by using Northern blot and fluorescent quantitative PCR;Western blot and fluorescent quantitative PCR were adopted to detect the expression of regulatory factors including HNF3β,HNF4α,PPARαand RXRα.Results Compared to the blank control group,both hypericin and lamivudine had significant inhibiting effect on HBV DNA and expression level of HBsAg and HBeAg in HepG2.2.15 cells (P <0.05).Hypericin could significantly decrease the pgRNA expression compared with the blank control group (P <0.05),while lamivudine had no obvious change (P <0.05).Moreover,hypericin exhibited significant effects on the expression of HNF3βand regulatory factor HNF4αcompared with the blank control group and 3TC group(P <0.05).Conclusion Hypericin represents a strong anti-HBV effect,moreover could increase the negative regulatory factor HNF3βn expression and decreases the positive factor HNF4αexpression,prompting that its drug target point could be pgRNA.
10.Development and clinical application of integrated network management platform for tumor radiotherapy information
Xingwang GAO ; Guangshun ZHANG ; Li CHEN ; Luosheng ZHANG ; Shaomin HUANG ; Xiaowu DENG
Chinese Journal of Radiation Oncology 2016;25(4):395-400
Objective To develop a network management system for tumor radiotherapy information that integrates process management and quality assurance functions, and to investigate its clinical value. Methods Based on the requirements of radiotherapy process quality assurance and control, the client-server ( C-S) pattern, along with SQL SERVER 2008 database structure, international standard DICOM 3.0, DICOM RT, and HL7 protocols, and system hardware and self-developed software in local area network, was adopted to establish the network management system for radiotherapy information, and clinical tests were performed to evaluate the operation performance of this platform.Results ( 1 ) The interactive integrated management platform and client-side functional modules with a uniform interface were developed.( 2) The safe and reliable standardized data interface was developed, which could be connected to accelerators, treatment planning systems, and hospital information systems developed by mainstream manufacturers.( 3) The modules for radiotherapy process management and quality assurance and management were designed and developed.( 4) The platform passed all the tests before operation and had been used in clinical departments for almost 3 years, which confirmed that the system was safe and stable during operation and that all functions designed were realized.Conclusions The integrated management platform meets the requirements for application and management of radiotherapy information and data, improves the overall work efficiency in radiotherapy department and the level of quality assurance and control, and holds promise for clinical application as a good tool for tumor radiotherapy departments.