1.The lesion distribution pattern of poststroke pathological laughing and crying:an MRI study
Chinese Journal of Behavioral Medicine and Brain Science 2017;26(3):220-225
Objective To explore the lesion distribution pattern of poststroke pathological laughing or crying (PSPLC) by using MRI,and to discuss its pathogenesis. Methods All 24 cases selected from stroke patients who were treated in the department of neurology from May 2012 to December 2015 and had complete follow?up information after their discharge through 6 months were screened for pathological laughing and crying( PLC) . MRI characteristics of cases were analyzed retrospectively to identify lesion distribution. 28 cases with acute isolated pontine infarction who did not demonstrate PLC were enrolled as a comparison group. Lesion pattern difference between 14 cases of the pontine infarction with PLC and 28 cases of acute i?solated pontine infarction without PLC was compared. Results In these 24 cases,the highest occurrence rate of PLC was 41.67% in the second month. 15 cases had forced crying (62.5%),3 cases had forced laughing (12.5%),6 cases had pathological laughing or crying (25%). MRI studies showed lesion location in the left side were 3 cases,in the right side were 1 case,in the bilateral brain were 20 cases,in the basal ganglia were 9 cases,in the thalamus were 8 cases,in the corona radiata were 6 cases,in the semioval center were 5 cases, in the cerebral cortex were 4 cases,in the cerebellum were 4 cases and in the brain stem were 14 cases. In the cases of PLC with brain stem lesion,only 1 case was isolated pontine infarction,the other patients all combined with lesions of other parts. Compared with the pontine infarction with PLC,the isolated pontine in?farction without PLC was more likely to suffer with unilateral brain lesions(71%vs 50%),but there was no significant difference (χ2=0.844, P=0.358) . Conclusion PSFLC is not a rare complication after stroke, which is associated with multiple site of brain involvement especially pontine infarction.
2.Clinical significance of serum TPOAb monitoring during 131I treatment in patients with Graves' disease
Yanghang LI ; Feng CHEN ; Liu LIU
International Journal of Laboratory Medicine 2009;30(10):960-962
Objective The investigate the clinical significance of serum anti-thyroid peroxidase antibody(TPOAb)monitoring in therapeutic effect judgment and prognosis evaluation during 131I treatment in patients with Graves disease.Methods A total of 112 patients with Graves disease(hyperthyroidism group)and 50 healthy controls(healthy control group)were enrolled in the investigation.Serum concentration of TPOAb was measured with chemiluminescent immunoassay(CLIA)in healthy control group and hyperthyroidism group(at time points of 0,3,6,12 and 24 months after 131I treatment,i.e.T0,T3,T6,T12 and T24).Variance analysis and t test were adopted.Results The mean level of TPOAb was significantly higher in patients with Graves' disease before 131I treatment than that in healthy controls(P<0.01).In hypenthyroidism group,serum concentration of TPOAb was evidently higher at T3[(108.94±70.15)IU/mL]than T0[(81.95±47.64)IU/mL](P<0.01);TPOAb level began to decline at T6[(42.78±28.68)IU/mL],but still higher than that of healthy control group;while where was no statistical difference in TPOAb level between hyperthyroidism group at T24[(7.89±4.01)IU/mL]and healthy control group(F>0.05).Conclusion Serum level of TPOAb before treatment may be used as an auxiliary indicator of 131I dosage.Posttreatment TPOAb level monitoring contributes to therapeutic effect evaluation,follow-up visit and immunorcaction state understanding.
3.Statistical adjustment of treatment effect for covariates in clinical trials
Yuxiu LIU ; Chen YAO ; Feng CHEN ; Qiguang CHEN ; Binghua SU ;
Chinese Journal of Clinical Pharmacology and Therapeutics 2000;0(03):-
Some non treatment variables that affect the outcome of a disease are often called covariates. These covariables should be considered in the design and analysis of clinical trials to obtain unbias conclusion. To ensure that any observed treatment effect is not influenced by an imbalances in baseline characteristics, both preadjustment and postadjustment are provided in the design stage and analysis stage of the trials respectively. They can improve the credibility of the trial results and increase the statistical efficiency. Based on a few papers published about adjustment for covariates and some documentations of the International Conference on Harmonization (ICH), we review the concepts, methods and procedures for adjustment of treatment effects for the influence of covariates. The statistical issues on the application of adjustment are especially discussed in great depth.
4.Investigation on Mobile Phone Based Thermal Imaging System and Its Preliminary Application.
Fufeng LI ; Feng CHEN ; Jing LIU
Chinese Journal of Medical Instrumentation 2015;39(3):173-176
The technical structure of a low-cost thermal imaging system (TIM) lunched on a mobile phone was investigated, which consists of a thermal infrared module and mobile phone and application software. The designing strategies and technical factors toward realizing various TIM array performances are interpreted, including sensor cost and Noise Equivalent Temperature Difference (NETD). In the software algorithm, a mechanism for scene-change detection was implemented to optimize the efficiency of non-uniformity correction (NUC). The performance experiments and analysis indicate that the NETD of the system can be smaller than 150 mK when the integration time is larger than 16 frames. Furthermore, a practical application for human temperature monitoring during physical exercise is proposed and interpreted. The measurement results support the feasibility and facility of the system in the medical application.
Algorithms
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Body Temperature
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Cell Phone
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Humans
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Infrared Rays
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Mobile Applications
5.The correlation between insulin sensitivity and human erythrocyte memberane phospholipid in elderly diabetic patients
Yunling LIU ; Shaohua CHEN ; Feng YUE
Chinese Journal of Geriatrics 2003;0(08):-
ObjectiveTo study the correlation between human erythrocyte membrane phospholipid profile and insulin sensitivity in elderly diabetic patients. MethodsThe levels of phosphatidylcholine (PC), phosphatidylserine(PS),phosphatidtlinostiol(PI),phosphatidylethanolamine(PE),the maximum erythrocyte deformation index(DImax) , the maximum erythrocyte aggregation index(AImax) and glucose disposal contant Ki (KITT) were measured in 32 cases of elderly diabetics and 30 healthy old subjects. ResultsThe KITT was lower in diabetic patients than in normal controls (P
6.Construction of HBsAg gene recombinant adenoviruses and packing in 293 cells
Feng CHEN ; Xinhua ZHAO ; Anmin LIU
Chinese Journal of Immunology 1999;0(12):-
Objective:After construction and identification of HBsAg gene recombinant backbone adenoviral vector,it is to prouduct HBsAg gene recombinant adenoviruses by packing PAd-Easy-1-HBs in 293 cells.Methods:The gene of interest was amplified from plasmid pEcob-6 PCR, the gene of interest which contained HBsAg gene was cloned into on adenoviral shuttle vector pAd-track-cmv. The pAd-track-cmv-HBs was linearized by digesting with restriction endonuclease Pme-1, and subsequently cotransformed into E.coli BJ-5183 cells with an adenoviral backbone vector pAd-Easy-1, Homologous recombinants were performed in bacterial cells. Finally, the linearized backbone adenoviral vector was transfected into adenoviruses packing cells lines,e.g. 293 cell by lipofectamine transfection. Transfections and viral productions can be minotored by green fluorescent protein(GFP). The expression of HBsAg in supermatant was investigated by ELISA. It was a certain HBsAg vaccine to amplify recombinant adenoviruses by repeating the infevtion cell to collect the viral supermatant.Results:GFP expression was visible by fluorescence microscopy after transfection. Adenoviral titer was monitored by GFP expression. GFP expression was visible after repeating the infection cell using the viral supernatant in more than 90 percent of the cells.The HBsAg also expressed in supermatant.Conclusion:HBsAg gene recombinant adenoviral backbone vector has been constructed successfully. HBsAg gene recombinant adenoviruses have been producted by packing in 293 cells. The study provides the possibility of further researches on the development of new anti-HBV vaccines.
7.Investigation and analysis of preventive antibacterial drugs used in type Ⅰincision operation
Feng CHEN ; Sheng YAO ; Feide LIU
Journal of Regional Anatomy and Operative Surgery 2016;25(4):297-299
Objective To analyze the situation and trend of the application of antibacterial drugs in the case of typeⅠincision operation in our hospital.Methods A total of 1 964 patients in our hospital from 2010 to 2014 were randomly selected,and the changes of antimicrobi-al drugs during the treatment period were analyzed.The surgical site infection probability and antimicrobial application rules in typeⅠincision surgery in 3 years,including probability,category,first time and duration of drug use,and the relationship between antibacterial drugs and typeⅠincision infection were analyzed.Results Application of antibacterial drugs in typeⅠincision operation probability decreased significant-ly,and the surgical infection probability decreased year by year,with statistically significant difference(P<0.05).The first application of an-tibacterial drug time was more reasonable,the choice of antimicrobial drugs were mainly one generation or two generation of Cephalosporin. There was a significant increase in the probability of stopping medication within 2 days after surgery,and the difference was statistically signif-icant(P<0.05).Conclusion The application of antibiotics should be strictly applied to the application of the indications for the use of anti-biotics.To understand the scope of application of antimicrobial drugs,and should try to shorten the use of time,control of infection during peri-operative period,reduce drug resistance.
8.Expression of Bcl-2 and E2F-1 in Human Adenomyosis and Their Significance
Ping CHEN ; Lihong ZHENG ; Feng LIU
Journal of Medical Research 2006;0(06):-
Objective To study the expression of Bcl-2 and E2F-1 in human adenomyosis and to explore the correlation between the expression and pathogenesis of human adenomyosis. Methods Immunohistochemical S-P method was employed to detect the expression of Bcl-2 and E2F-1 in 58 specimens of ectopic endometrium, eutopic endometrium of adenomyosis and 30 specimens of normal endometrium. Results The expression of Bcl-2 and E2F-1 in ectopic and eutopic endometrium of adenomyosis were significantly higher than those of normal endometrium (P
9.The effects of glycosylated LDL on intracellular[Ca~(2+)]and cholesterol deposition
Yi FENG ; Naifeng LIU ; Rixin CHEN ;
Chinese Journal of Diabetes 1995;0(04):-
The changes of[Ca~(2+)]and metabolism of lipid in human monocyte-macrophages as inter- acted with glycosylated LDL(glc-LDL)were observed.The intracellular[Ca~(2+)]was higher than that of LDL(P
10.The rescue of the hypothermic patients immersed by seawater
Yang LIU ; Tai-Hu WU ; Feng CHEN ;
Chinese Medical Equipment Journal 2004;0(09):-
For the diathermancy of the seawater is much bigger than that of the air, and the heat dispersed from the body exceeds the heat produced by the body, the heat would be lost immediately when people fell into the cold seawater. The temperature of people would drop instantly to frozen stiff. So it has great signification to rescue the people dropped into the cold water at once. This paper will introduce how to rescue, examine, stabilize, insulate, finally transport the patient to the hospital, and some things that should be paid attention to during the whole process.