2.Artificial Abortion Has Important Effect on the Development of Adenomyosts
Fei YU ; Weiwei GAO ; Yuquan ZHANG
Journal of Medical Research 2009;38(8):71-73
Objective To study the factors such as artificial abortion frequency, pregnancy time and so on on development of adeno-myosis (AM). Methods A retrospective analysis was carried in 462 patients who were from the department of gynaecology and obstetrics in Affiliated Hospital of Nantong University and Beijing Aviation Center Hospital from January 2004 to December 2008. The patients were divided into two groups: AM and no - AM. The two groups were compared for abortion frequency, pregnancy time, age, menarche age and so on. Results There were no significant differences between the two groups in age, menarche age, age of the first artificial abor-tion, bearing frequency, IUD with pregnancy and so on(P > 0.05). The proportion of patients with repeated artificial abortion or history of curettage of uterus in AM group was higher than that in the no - AM group. The patients with pregnaney time more than 8 weeks who re-ceived artificial abortion had higher rate of development of AM. Conclusion Repeated artificial abortion, pregnancy time and history of curettage of uterus were the risk factors of development of adenomyosis.
3.Investigation on Water Source Pollution by Cryptosporidium parvum and Giardia lamblia in the Small Towns and Villages in Shenzhen,China
Shuyuan YU ; Fei TANG ; Zhicheng ZHANG
Journal of Environment and Health 1989;0(06):-
Objective To investigate the water source pollution by parasitic protozoa in small towns and villages in Shenzhen,China,in order to present the data to establish the national hygienic standard for controlling parasitic protozoa pollution.Methods The samples of water source were collected from 8 village level water plants in Shenzhen.Giardia lamblia and Cryptosporidium were detected,according to the EPA methods,by filtering,rinsing,magnetic isolation and staining.Results Giardia lamblia was found in water sources of 6 water plants and Cryptosporidium was found in one water plant.Conclusion At present,some water sources of village level water plants where the reservoirs were used as the water source in Shenzhen have been polluted by Giardia lamblia and Cryptosporidium,that indicates the potentiality of the water-born-diseases in that areas.
4.Research of Automatic QT Interval Detection Based on Morphological Method
Hui YU ; Fei DU ; Lixin ZHANG
Space Medicine & Medical Engineering 2006;0(01):-
Objective To study and design a new algorithm of QT interval measurement based on multi-scale morphological derivative transform(MMDT) according to the demands of mobile monitoring platform.Methods After the MMDT of ECG signals by inducing a triangle and a short line as a pair of structure elements,they were classified into four types by their morphological characteristics and the optimal strategy for each type was described to detect the onset of Q-wave.By introducing the "wing" function,two referenced points of T peak were picked out,which was helpful to locate the peak and offset of T wave,and improve the precision and recognition rate of MMDT method when detecting the bifid T wave(90.9%)and biphasic T wave(86.7%).Results Eighty data records from CSE database were used to evaluate the availability.By contrast with the wavelet transform method,the statistical results showed that the proposed algorithm had generally less error and smaller standard deviation especially for abnormal-phase T wave.Conclusion Compared with those algorithms based on wavelet transform and self-adaptive threshold techniques,our algorithm needs less empirical parameters and calculation.It is also suitable for mobile monitoring and HOLTER system,and has a wide prospect of application.
5.Artificial Abortion Has Important Effect on the Development of Adenomyosis
Fei YU ; Weiwei GAO ; Yuquan ZHANG
Journal of Medical Research 2006;0(08):-
0.05).The proportion of patients with repeated artificial abortion or history of curettage of uterus in AM group was higher than that in the no-AM group.The patients with pregnancy time more than 8 weeks who received artificial abortion had higher rate of development of AM.Conclusion Repeated artificial abortion,pregnancy time and history of curettage of uterus were the risk factors of development of adenomyosis.
6.A Study on the Diagnostic Value of Dynamic Contrast-Enhanced CT in the Solitary Pulmonary Nodules
Yu XIANG ; Fei ZHOU ; Tiegang ZHANG
Journal of Chinese Physician 2001;0(08):-
Objective To explore the value of dynamic contrast-enhanced CT for differentially diagnosing benign and malignant the solitary pulmonary nodules. Methods 117 solitary pulmonary nodules proved by histopathological examination were enrolled in this study. Thin-section CT scanning was performed before and 1,2,3,4 and 5 minutes after contrast enhancement. Results The enhanced value of malignant nodules (39.6?15.8)Hu was significantly higher than that of benign nodules (19.18?17.23)Hu (P
7.MR elastography on 3.0 T scanner: a preliminary study of fiver stiffness measurements and inter-rater consistency in volunteers and patients with chronic fiver disease
Yu SHI ; Qiyong GUO ; Lan ZHANG ; Fei XIA ; Bing YU
Chinese Journal of Radiology 2013;47(11):1005-1008
Objective To estimate reliability of magnetic resonance elastography (MRE) in measuring liver stiffness of volunteers and patients with chronic liver disease and to assess inter-rater consistency.Methods MRE was performed on a 3.0 T scanner in all subjects,including 24 volunteers (control group) and 64 patients with liver disease (chronic liver disease group).Liver stiffness was measured blindly by two raters.The pathological fibrosis score was applied as a standard reference for liver fibrosis in 22 patients.The intraclass correlation coefficient (ICC) was used to evaluate inter-rater reliability.The differences of liver stiffness between two groups were evaluated using non-parametric MannWhitney U test.Spearman analysis was used to analyze the correlation between fibrosis stages and liver stiffness.Results The intraclass correlation coefficient of liver stiffness was perfect (ICC =0.99,P < 0.01)between two raters.There was significant difference of mean stiffness between control group and patient group (U =90.5,P <0.01) with(2.35 ±0.34) kPa and(4.17 ± 0.47) kPa,respectively.The correlation between fibrosis stage (3,3,5,5 and 6 patients in fibrosis stage S0,S1,S2,S3 and S4) and stiffness (2.13,3.25,3.82,5.45 and 7.35 kPa) was very strong (r =0.96,P <0.01).Conclusion MRE is a reliable and promising tool to measure liver stiffness and to assess liver fibrosis.
8.13 cases of Abamectin poisoning.
Yu-fei GUO ; Yi WANG ; Ji-xian ZHANG
Chinese Journal of Industrial Hygiene and Occupational Diseases 2010;28(6):472-472
Adult
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Female
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Humans
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Insecticides
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poisoning
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Ivermectin
;
analogs & derivatives
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poisoning
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Male
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Middle Aged
9.Everolimus after liver transplantation: a Meta-analysis
Liang YU ; Dong ZHANG ; Fei PAN ; Qiang HE ; Ren LANG
Chinese Journal of Hepatobiliary Surgery 2016;22(7):454-459
Objective To compare everolimus (EVR) with calcineurin inhibitor (CNI) minimization or withdrawal on renal function of liver transplant patients with standard CNI therapy.Methods A search was conducted on databases which included the PubMed,Embase and Cochrane library for randomized controlled trials (RCTs) comparing EVR with CNI with minimization or withdrawal (the EVR group) with standard CNI therapy (the standard CNIs group) on renal function of liver transplant patients.A metaanalysis was performed using RevMan 5.3 software.Results Five RCTs which included 1 264 patients were selected into this study.There were 790 patients in the EVR group and 474 patients in the standard CNIs group.On meta-analysis,the EVR group had significantly better renal function (SMD =0.36,95% CI 0.09 ~ 0.64,P < 0.05),but higher rates of infection (RR =1.37,95% CI 1.08 ~ 1.74,P < 0.05),dyslipidemia (RR =2.46,95% CI 1.79 ~ 3.38) and leukopenia (RR =2.37,95% CI 1.32 ~ 4.26).No significant differences were found on the mortality and the acute rejection rates between the two groups (all P < 0.05).Conclusions EVR with CNI minimization or withdrawal after liver transplantation provided effective immunosuppression and improved patients' renal function.The treatment increased the rates of infection,dyslipidemia and leukopenia.
10.Homeostasis of complement system and the severity of coronary artery disease
Fei SONG ; Mengyue YU ; Jianru LIU ; Dewei WU ; Xinyue ZHANG
Chinese Journal of Laboratory Medicine 2016;39(9):685-689
Objective To investigate if the relative ratio between C1q and C3a, C5a had a relationship with the extent of coronary artery disease ( CAD) which had never been evaluated in humans.Methods Fifty-three patients scheduled for elective percutaneous coronary intervention ( PCI ) from February, 2016 to April, 2016 at Fuwai hospital were prospectively enrolled.According to the clinical and angiographic characters patients were divided into two groups:acute coronary syndrome ( ACS) group ( n=24), and control group (n=29, 19 patients with stable angina and 10 patients without CAD confirmed by angiography).In all individuals, fasting venous blood was collected by EDTA tubes after admission and strictly before PCI.The plasma level of C1q was measured by immune turbidimetric analysis, C3a and C5a were measured by ELISA tests.Differences between groups were assessed using t test, Mann-Whitney Utests, chi-squared test or Fisher exact test depending on the type of data respectively.Multivariate logistic regression analyses were conducted to evaluate the adjusted effect of C1q, C3a, C5a, C1q/C3a and C1q/C5a on ACS.Results Compared with control group, ACS group has an elevated circulation level of C3a (4 531.14 μg/L vs.4 179.95 μg/L, t=1.381,P=0.173) and C5a (6.44 μg/L vs.4.42 μg/L, t=0.133, P=0.108) but a decreased level of C1q (176.98 μg/ml vs.200.60 μg/ml, t=-2.022, P=0.048).The relative ratio of C1q/C3a was significantly decreased in ACS patients(4.05 ×10 -2 vs.4.97 × 10 -2 , t=-2.484, P=0.016).According to the multiple logistic regression analysis, lower relative ratio of C1q/C3a level proved to be independently associated with ACS ( OR=0.937, P=0.047, 95% CI:0.879-0.998).Conclusions The decreased relative ratio of C1q/C3a level proved to be independently associated with ACS.C1q/C3a ratio could be used as an important index reflecting the complement system homeostasis status which might have potential clinical value in evaluating the prognosis of patients with CAD.