1.Clinical analysis of 21 patients with secondary epilepsy after stroke
Chinese Journal of Primary Medicine and Pharmacy 2010;17(15):2065-2066
Objective To explore the relationship between epilepsy and stroke,the features of secondary epilepsy and its treatment. Methods 233 stroke patients were observed and the clinical data of 21 patients who had secondary epilepsy were analyzed. Results Secondary epilepsy after stroke was mainly seen in the cortical stoke patients, the incidence of epilepsy of the cortical stroke group was 16.7% , which was significantly higher than that of the gubcortical stroke patients(5.7% ) ,and there was significant difference between the two groups. The incidence of epilepsy of stroke with a lesion >4cm group was 17. 3% .which was significantly higher than that of stroke with a lesion <4cm group(5.4% ), there was also significant difference between the two groups. There was no significant difference between ischeraic stroke and hemorrhagic stroke(P>0.05). Conclusion The incidence of secondary epilepsy after stroke had no correlations with the stroke types,but was related to the area and the location of the stroke.
2.Study on the beneficial effect of dual peroxisome proliferator-activated receptor agonist WY14643 on vascular endothelium
Chen QU ; Liang TANG ; Yan ZHU
Journal of Chinese Physician 2012;14(6):746-749
ObjectiveThe present study aimed to determine whether or not dual paroxysm proliferator-activated receptor (PPAR) agonist,WY14643,improved the dysfunctioned vascular endothelium in hypertension by reducing endothelium-derived contracting factors ( EDCFs ),and to explore the molecular mechanism it was involved in.MethodsIsometric tension in isolated thoracic aortic rings of spontaneously hypertensive rats was recorded.Endothelium-dependent contractions evoked by acetylcholine in the presence of L NAME were reduced by fenofibrate.Cyclooxygenase 1 ( COX1 ) activities were determined by analyzing the peroxidase activity of cyclooxygenase colorimetrically by using ELISA kit.ResultsCompared to the control group,WY14643 significantly decreased the vasoconstriction in aorta of the SHR rats(P=0.014).PPARα antagonist MK866 enhanced the vascular contractility of SHR rats that were incubated with 10.0μmol/L WY14643( P=0.021 ).PPARΥ antagonist GW9662 did not significantly affect the vascular contractility of SHR rats that were incubated with 10.0 μmol/L WY14643( P=0.061 ).The levels of serum PGFlα(P=0.012),2α( P =0.019) and TXB2(P=0.023) in SHR rats incubated with 10.0 μmol/L WY14643 were significantly lower than the control group,respectively.Under the condition of the existence of vascular endothelium,the expression of COX-1 in SHR rats incubated with WY14643 was significantly lower than that in SHR rats incubated without WY14643 (P=0.017).ConclusionsThose data showed that WY14643 reduced the release of EDCFs,it suggests that WY14643 protects against vascular diseases through the PPAR activators in spontaneous hypertension.
3.Time-frequency analysis of ECG signals
Zhen LEI ; Yiping CHEN ; Yan TANG
Chinese Medical Equipment Journal 2004;0(08):-
In this paper,a time-frequency approach is used for the recognition and analysis of ECG signals for a normal or an abnormal patient.An iterative deconvolution procedure is applied to calculate the time-frequency representations.This method can enhance the resolutions of the signals.
4.Prevention and Control of Methicillin-resistant Staphylococcus aureus Infection in ICU
Hongyan CHEN ; Yufen TANG ; Yan SUN
Chinese Journal of Nosocomiology 2009;0(21):-
OBJECTIVE To investigate and analyze the cause of the cross infection of Methicillin-resistant Staphylococcus aureus(MRSA) in ICU patients,and to apporach its preventive and control measures.METHODS Eiological inspection and sanitary monitoring have been done in ICU where there were two MRSA patients from June 6th,2008 to August 1st,2008.RESULTS MRSA has been detected on the hands of the ICU medical staff,on the bed-desks,on the switches of the vacuum extractor and gas supply unit on the wall,and in the NS for inhaling sputum.The separation rate were 37.5%,20.0%,54.5%,37.5%,87.5%.CONCLUSIONS ICU patients are prone to be infected with MRSA,which has a strong drug resistance and the infection is difficult to be treated.The cross infection can be prevented and controlled by rational administration,sterile operation and insulation.
5.Efficacy and Safety of Sodium Valproate versus Diazepam in the Treatment of Status Epilepticus in Adults:a Meta-analysis
Chen LIU ; Suying YAN ; Jing TANG
China Pharmacy 2015;(24):3368-3370
OBJECTIVE:To systematically evaluate the efficacy and safety of sodium valproate versus diazepam in the treat-ment of status epilepticus in adults,and to provide evidence-based reference for clinic treatment. METHODS:Retrieved from Med-line,EMBase,PubMed,Cochrane Library,CJFD,VIP datebase,CBM and Wanfang database,the randomized controlled trials (RCT) about sodium valproate (test group) versus diazepam (control group) in the treatment of status epilepticus in adults were collected. Meta-analysis was performed by using Rev Man 5.0 statistical software after extracting data and evaluating quality. RE-SULTS:A total of 5 RCTs were included,involving 276 patients. Results of Meta-analysis showed that recurrence rate of epilepsy in 48 h in test group was significantly lower than that of control group [OR=0.39,95%CI(0.16,0.96),P=0.04]. Compared with the control group,the effective rate controlling epilepsy within 2 h[OR=1.76,95%CI(0.88,3.52),P=0.11] and incidence of liver injury[RR=1.19,95%CI(0.38,3.70),P=0.77] were no significant differences. CONCLUSIONS:The efficacy and safety of sodi-um valproate was equivalent to diazepam in the treatment of status epilepticus in adults,however,sodium valproate was superior to diazepam in terms of controlling recurrent effect. Due to methodology limit of included studies,large-scale and high quality RCT are required for further validation of the conclusions.
7.Promote multidisciplinary study on anthracycline-induced cardiotoxicity in children.
Shu-bao CHEN ; Mei-rong HUANG ; Jing-yan TANG
Chinese Journal of Pediatrics 2013;51(8):565-568
Anthracyclines
;
administration & dosage
;
adverse effects
;
Antineoplastic Agents
;
administration & dosage
;
adverse effects
;
Biomarkers
;
blood
;
Cardiomyopathies
;
chemically induced
;
diagnosis
;
prevention & control
;
Cardiotonic Agents
;
therapeutic use
;
Child
;
Child, Preschool
;
Echocardiography
;
Heart
;
drug effects
;
Heart Diseases
;
chemically induced
;
diagnosis
;
prevention & control
;
Humans
;
Risk Factors
;
Survival Analysis
;
Troponin I
;
analysis
8.Effects of lentiviral-mediated p38 mitogen-activated protein kinase short hair-pin RNA on cardiac function after myocardial infarction in aldosterone overload rats
Yan ZHOU ; Jie WEI ; Yuanhong LIANG ; Jing CHEN ; Qizhu TANG
Chinese Journal of Geriatrics 2013;(6):671-674
Objective To investigate the effects of p38 mitogen-activated protein kinase (MAPK) short hair RNA (shRNA) delivered by lentiviral vectors (pGLV) on cardiac function after myocardial infarction (MI) in aldosterone overload rats and to explore the mechanism.Methods Aldosterone overload rat myocardial infarction model was obtained by ligating the left anterior descending coronary artery.The pGLV-shRNA was constructed,sequenced and injected into rats via tail vein.Rats were divided into 3 groups:pGLV-shRNA group (n=6),pGLV-shRNA-NC group (n=6,contained a nonsense shRNA) and the sham-operation group (n=6).Cardiac function was measured by cardiac ultrasound.Apoptosis was assessed by transferase (TdT)-mediated biotin-16-dUTP nick-end labelling (TUNEL).The p38 MAPK mRNA expression was analyzed by RT-PCR.The protein expressions of p38 MAPK and caspase-3 were detected by Western blot.Results Compared with the sham-operation group,cardiac systolic function was reduced and myocardial apoptosis index was significantly increased [(31.26 ± 4.45) % vs.(15.20 ± 2.18) %,P < 0.01] in pGLV-shRNA-NC group.The mRNA and protien expressions of p38MAPK and caspase 3 protein expression were significantly increased in pGLV-shRNA-NC group (all P<0.01).Compared with pGLV-shRNA-NC group,cardiac function was improved,myocardial cell apoptosis index was reduced [(22.35±3.59)% vs.(31.26±4.45)%,P<0.05],and the mRNA and protien expressions of p38MAPK and caspase 3 protein expression were decreased in pGLV-shRNA group (all P<0.05).Conclusions Cardiac dysfunction is associated with p38MAPK-mediated myocardial apoptosis in aldosterone overload MI rats.pGLV-shRNA may inhibit cardiomyocyte apoptosis and improve postMI cardiac function.
9.The application of scissors knife in difficult endoscopic submucosal dissection
Geng CHEN ; Hong XU ; Tongyu TANG ; Ke TAO ; Yan XIA
Chinese Journal of Digestive Endoscopy 2013;30(11):631-633
Objective To evaluate the efficacy and safety of endoscopic submucosal dissection (ESD) with scissors knife in difficult cases.Methods A total of 36 sessions of ESD in 34 patients were performed from May 2010 to May 2012 with application of new scissors knife.The complications and followup outcomes were recorded.Results All lesions were removed successfully with an en bloc resection rate at 91.7%.Delayed bleeding occurred in 2 patients (5.6%),and both of them were cured sucessfully with endoscopy.No perforation happened and the average hospitalization time was 5 days.Follow-up endoscopy performed 6 or 12 months after ESD in 6 patients revealed no recurrence or residual lesions.Other patients are under follow-up now.Conclusion The scissors knife is easy to manipulate,which can ensure the safety and efficiency of ESD.
10.Immunomodulatory effects of probiotics on rat models with ovalbumin induced food allergy
Wenjing TANG ; Juan HUANG ; Yan ZHONG ; Kan ZHOU ; Bing CHEN
Journal of Shanghai Jiaotong University(medical Science) 2010;30(1):4-8
Objective To investigate the effects of probiotics on the occurrence of ovalbumin (OVA) induced food allergy and the regulatory effects on immune function of rat models. Methods Thirty female Brown-Norway rats aged 3 weeks were randomly divided into blank control group,food allergy group and probiotics intervention group(n=10).The levels of serum OVA-IgE and intestinal sIgA were measured by ELISA method.Splenic lymphocytes were isolated and cultured in vitro,and the Treg lymphocyte subgroups in the spleen were analyzed by flow eytometry.The levels of IFN-γ,IL-4 and IL-10 in the supernatant of cultured splenic lymphocytes were measured by ELISA method. Results The serum OVA-IgE level in food allergy group was significantly higher than that in blank control group(P<0.05),while that in probiotics intervention group was significantly lower than that in food allergy group(P<0.05).Compared with food allergy group and blank control group,the level of intestinal sIgA in probiotics intervention group was significantly higher(P<0.05).The percentage of CD4~+CD25~+T lymphoeytes in food allergy group was significantly lower than that in blank contml group(P