Objective To probe the effect of c-fos gene on the pentyleneterazol-induced hippocampal neurons apoptosis.Methods Using immunohistochemistry,TUNEL and flow cytometry(FCM),we detected the Fos expression and the apoptosis of hippocampal neurons;we injected c-fos antisense into ventrile before epilepsy and detected as up.Results Epilepsy can induce the expression of Fos in the hippocampus and peaking at 1 h(P

Objective To explore the relationship of human cytomegalovirus(HCMV) infection and infantal epilepsy.Methods Fluorescence quantitative polymerase chain reaction was employed to detect the urine HCMV-DNA in 20 healthy children and 52 infants with epilepsy,and the changes in head CT scanning and brainstem auditory evoked potential were determined in HCMV positive and negative epilepsy infants.Results Positive HCMV-DNA was found in 31(59.62%)infants with epilepsy and 6(30%)healthy infants,there was significant difference between two groups(P

Aim To prepare NT-Ⅰ loaded nanoparticles with different diameters modified by Methylated-polyethyleneglycol (Me-PEG) and evaluate their brain pharmacokinetics after administered nasally in rats. Methods NT-Ⅰ-NP was prepared by emulsion/solvent evaporation method and MePEG-PLA was used as the carrier material. Microdialysis technique and fluorospectrophotometry were used to determine NT-Ⅰ concentration after nasal administration in the brain of rats. Results The appearance of all NT-Ⅰ-NP groups was round or similar. The AUC(0-t) of below 100 nm NT-Ⅰ-NP was 1.22 fold as that of 100~200 nm NT-Ⅰ-NP,1.34 fold as that of 200~300 nm and 1.60 fold as that of exceed 300 nm NT-Ⅰ-NP(P

Objective To analyze the clinical features of infective endocarditis with positive antineutrophil cytoplasmic antibodies ,and compare with ANCA associated small vessel vasculitis(AASV). Methods Three IE patients with positive ANCA were analyzed, and 13 cases from literatures were reviewed. Results Sixteen patients had positive anti-PR3 ANCA, in which 2 cases had both positive (anti-PR3 and anti-MPO ANCA) ANCA. All patients had some clinical manifestations mimic AASV, including fever ( 13/16, 81% ), rash (8/16, 50% ), rapidly progressive glomerulonephritis (7/16, 44% ), splenomegaly (6/16, 38% ). Streptococcal species were identified in 12 patients, and cardiac valvular abnormalities were demonstrated in all patients. All patients except 2, who died of cerebral hemorrhage followed by cerebral infarction, recovered with antibiotic therapy. Conclusion Infective endocarditis sometimes can have the same clinical features as AASV, so physicians should carefully differentiate between them when dealing with patients with positive ANCA antibodies.

BACKGROUND:Orthotopic lung transplantation model in a rat is the key to investigate the chronic rejection after lung transplantation. However, the precise surgical technique and difficult operation limit the application of the model. OBJECTIVE:To improve the process of anesthesia and lung transplantation, and to establish a rapid, safe and reversible rat lung transplantation model. METHODS:A total of 42 rats were used to establish the model, including 21 donor models and 21 receptor models. The donor lung was excised by median sternotomy with dissection of the left lung and implantation of cuffs (intravenous catheters cut into 1.5 mm sections). The left lung was implanted in the recipient by lateral thoracotomy using the cuffs for anastomoses. The duration of surgery and success rate of transplantation were recorded and calculated. RESULTS AND CONCLUSION:The survival rate of rats after lung transplantation was 100%. The time of left donor lung extraction was (35.3±5.1) minutes in average. The time of placing cuff in donor lung was (12.5±4.6) minutes in average. The surgical procedure time of recipient was (50.2±3.3) minutes. The time of arteriovenous and bronchus casing anastomosis was (27.7±6.2) minutes. After pulmonary artery and vein blood flow was disparked, the whole lung turned red rapidly, blood perfusion was sufficient, venous returned unimpeded;after mechanical ventilation resumed, al graft lungs expanded wel . This improved anesthesia and lung transplantation technique in rats can provide a valid, reliable and reproducible animal model for studying immune responses and rejection in lung transplantation.

Objective The aim of this study was to explore possible pharmacokinetic factors and develop a population pharmacokinetic model for remifentanil in adult patients.Methods Eleven healthy patients,undergoing elective major abdominal surgery,aged 25 to 86 years,received random-ly remifentanil 0.3μg·kg-1 ·min-1 (group R3),or 0.6μg·kg-1 ·min-1 (group R6).Frequent ar-terial blood samples were drawn according to predetermined time and assayed for remifentanil concen-tration.Nonlinear mixed-effects modeling (NONMEM)was used to evaluate the time courses of the measured concentrations.The covariates include age,bodyweight (WT),gender,lean body mass (LBM),body mass index (BMI)and body surface area (BSA).Results The pharmacokinetic data of remifentanil were well described using a three-compartment linear model with first-order elimination from the central compartment.Forward analysis showed that age,height and body mass index (BMI) does not affect the pharmacokinetic parameters,which are contrast with body weight,lean body mass (LBM),body surface area (BSA)and gender;further analysis demonstrated only a significant effect of body weight on remifentanil systemic clearance (CL)and volume of the central compartment (V). For typical 60 years patients,PK parameters were:V1 =7.64 L,V2 =4.81 L,V3 =4.34 L,CL1 =2.74 L/min,CL2 = 0.738 L/min,CL3 = 0.0905 L/min.Conclusion The pharmacokinetics of remifentanil is consistent with its rapid elimination by blood and tissue esterase in Chinese patients. The systemic clearance and volume of distribution of central compartment increases with body weight in the population and the range of covariates studied,which suggests that a patient with greater body weight needs a greater initial dose and maintenance infusion rate higher to obtain a stable plasma con-centrations and clinical effects.

OBJECTIVE:To improve the quality standard for Guibi zhitong liquor. METHODS:TLC was used for the qualita-tive identification of Radix angelicae,Notopterygium incisum,Radix aucklandiae and Magnolia officinalis in the preparation;HPLC was used for the contents determination of imperatorin and cinnamaldehyde:the column was Waters Symmetry Shield RP-C18 with mobile phase of methanol-water for imperatorin(60:40,V/V)and methanol-water for cinnamaldehyde(35:65,V/V)at a flow rate of 1.0 mL/min,detection wavelength was 254 nm for imperatorin and 290 nm for cinnamaldehyde,column temperature was 25℃,and the injection volume was 20μL. RESULTS:The TLC spots of R. angelicae,N. incisum,R. aucklandiae and M. of-ficinalis were clear and well separated,negative control without interference. The linear range was 3.0-30.0 μg/mL for imperatorin (r=0.9998)and 3.978-39.78 μg/mL for cinnamaldehyde(r=0.9999);RSDs of precision,stability and reproducibility tests were lower than 2.0%;recoveries were 96.94%-102.64%(RSD=2.37%,n=6)and 96.78%-99.53%(RSD=1.00%,n=6). CONCLU-SIONS:The improved standard more effectively control the quality of the Guibi zhitong liquor.

Objective To study the clinical significance of P - selection expression in children with viral encephalitis and the correlation between this expression and the cerebral infarction with critical viral encephalitis. Methods Flow cytometric was employed to detect the expression of P- selection on the surface of platelet membrane in 44 children with viral encephalitis(20 light patients and 24 critical patients) and 20 healthy control children. The area of the cerebral infarction was determined by computed tomographic scan in 20 patients with critical viral encephalitis. The correlation between the two variables was analyzed. Results The expressions of P - selection on the surface of platelet membrane on less than 5 days and on 2 weeks after the onset of viral encephalitis were significantly higher in critical patients than those in normal control children and light patients( P

To set up a new rapid method for the rapid determination of influenza virus H5N1 and H7N9 basing on the Multi-Analyte Suspension Array (MASA) technology. Sequence analysis and design of degenerate primers and specific probes were set in the comparison and analysis of H5, N1, H7 and N9 genes. In combination with MASA technology, these primers and probes were used for the determination of samples of H5N1 and H7N9 and other subtypes ( H1N1, PH1N1, H5N2, H3N2 and H9N2). We developed a rapid determination method. This method had high specificity and sensitivity that could detect H5N1 and H7N9 at one time, and could detect samples that containing 10 copies of H5N1 and H7N9. This determination method could be used for rapid determination of influenza virus H5N1 and H7N9 at one time.
Humans ; Influenza A Virus, H5N1 Subtype ; classification ; genetics ; isolation & purification ; Influenza A Virus, H7N9 Subtype ; classification ; genetics ; isolation & purification ; Influenza, Human ; virology ; Oligonucleotide Array Sequence Analysis ; methods