Objective To explore the activated brain region of acute epilepsy in cat model induced by pentylenetetrazol(FFZ)with manganese enhanced-functional MR imaging(ME-fMRI),and evaluate the application of ME-fMRI on localization of the activated brain.Methods Forty cats were divided into 4 groups by random number table method as epileptic A and B groups as well as control A and B groups. Cats of epileptic groups were injected with PTZ(55 mg/kg)intramuscularly,and those of control groups were injected with the saline at same dose.The behavior change in the epileptic and control group A was observed and electroencephalogram(EEG)was also undertaken.Cats of epileptic and control group B were performed ME-fMRI,and the percentage of the enhanced signal intensity was then calculated.Results After injection with PTZ(55 mg/kg)intramuscularly,epileptic seizure was all evoked,and then EEG recording showed spike-wave and polyspike-wave complexes.The neocortex of cats of epileptic group B was diffusely phanero-enhanced on ME-fMRI.The percent enhancement of signal intensity in cortex of frontal lobe,parietal lobe and occipital lobe was(34.6?5.7)% and that in cortex of temporal lobe with(22.9? 6.5)%,whereas those of control group B with(14.9?4.5)% and(11.6?3.2)% respectively.And there was significant difference between the above different localization of the brain in the two groups (t=-10.43,-5.46 respectively,P

Dibenzothiophene (DBT) was used as a model compound. A bacteria strain, which can degrade dibenzo-thiophene efficiently, was obtained. This strain was identified as Pseudomonas stutzeris UP-1 according to its morphological, physiological and biochemical characters, and 16S rDNA sequence. The strain exhibits strong degradation capacity of DBT, and the end product of degradation is a kind of soluble compound. After the analysis of product of DBT degradation, it was deduced that the degradation of DBT by Pseudomonas stutzeri UP-1 is in accordance with the Kodama mechanism.

Objective To observe the expression of cardiotrophin-1(CT-1) in ischemia-reinfusion cardiac muscle of rats and the effect of neuregulin-1(NRG-1).Methods The model of ischemia-reinfusion cardiac muscle of rats were prepared,35 rats were randomly divided into 4 groups:model group(n=8),NRG-1 pretreatment group(n=9),pseudo-surgery group(n=8) and normal control group(n=10).The CT-1 mRNA in the observed cardiac muscle of all groups was measured by RT-PCR and the relative amount of CT-1 mRNA were calculated,and for statistical treatment.Results The CT-1 mRNA of model group was(63.96?9.34),and it was higher than that of pseudo-surgery group(36.16?5.43)and normal control group(36.84?4.64).The significant differences were found in 3 groups(F=47.37 P

Objective To explore the expression of HCK gene during the cardiomyocyte differentiation of mouse embryonic stem cells and analyze the role of HCK gene in maintenance of pluripotency of embryonic stem cells.Methods Mouse embryonic stem cells were cultured,then induced to differentiate into cardiomyocytes.Total RNAs were isolated from mouse embryonic stem cells in the differentiation days:0 day(D0),the second day(D2),the fourth day(D4),the sixth day(D6),the eighth day(D8),respectively.The levels of HCK mRNAs were assessed by the method of semi-quantitive reverse transcriptase-polymerase chain reaction(RT-PCR).In the meanwhile,Total proteins were also isolated from mouse embryonic stem cells in the differentiation D0,D2,D4,D6,D8,and the levels of HCK proteins were evaluated by Western-blot.Results HCK mRNAs could be detected in the mouse embryonic stem cells in D0 and D2,however,they were undetectable from D4 to D8.The expression of HCK mRNAs was rapidly down-regulated during cardiomyocyte differentiation of mouse embryonic stem cells.Expression of HCK proteins,which coincided with HCK mRNAs,down-regulated during differentiation and couldn't be detected in D4.Conclusions With the cardiomyocyte differentiation of mouse embryonic stem cells,the expression of HCK in the levels of mRNA and proteins are sharply down-regulated;HCK may play an important role in maintaining the pluripotency of embryonic stem cell.

Objective To explore the expression of cardiotrophin-1(CT-1) in myocardium and peripheral blood plasma of neonatal rat with asphyxia and the regulative effect of neuregulin-1(NRG-1).Methods Ninety seven-day-old neonatal rats were randomly divided into 3 groups:asphyxia group (n=40),normal control group (n=10)and NRG-1 pretreatment group (n=40).The model of neonatal rat with asphyxia was prepared by the way of ligation of carotid combined with low supply of oxygen.NRG-1(1 mg/kg) was given to NRG-1 pretreatment group by intraperitoneal injection 30 min before asphyxia.The separated plasma of peripheral blood and myocardium antetheca of aortic ventricle of heart were taken at the time point of 6,12,24 and 48 h.The expression of CT-1 in peripheral blood plasma was detected by enzyme linked immunoadsorbent assay,and that of myocardium was determined by Western blot.Results The expressions of CT-1 protein in peripheral blood plasma of asphyxia group were significantly higher than those of normal control group at each time point,and reached the peak at 24 h(Pa

OBJECTIVETo establish a drug-resistance cell line of human glioma mediated by MGMT.

METHODSSimulated the clinical usage of BCNU to establish a BCNU-resistant human glioma subline by cyclic exposing the U251 parent cells to a constant concentration of BCNU. The resistance index and the expression of MGMT mRNA of U251/BCNU were detected and compared the difference of in vitro proliferation between U251 and U251/BCNU.

RESULTSA subline--U251/BCNU was successfully established in about 4-month culture, which had a stable resistance to BCNU. U251/BCNU cells showed 17-fold higher resistance to BCNU than did U251 cells by MTT assay, while U251/BCNU cells expressed MGMT mRNA. The doubling time of U251 and U251/BCNU had no statistical difference.

CONCLUSIONA drug-resistance cell line of human glioma mediated by MGMT is established, which could provide experimental basis for further studies on the resistance mechanism and reversal methods of glioma chemotherapy.

ATP-Binding Cassette, Sub-Family B, Member 1 ; biosynthesis ; Brain Neoplasms ; pathology ; Cell Line, Tumor ; DNA Modification Methylases ; biosynthesis ; genetics ; Drug Resistance, Neoplasm ; genetics ; Glioma ; pathology ; Humans ; O(6)-Methylguanine-DNA Methyltransferase ; metabolism ; physiology

OBJECTIVETo investigate the effects of fast track surgery on patients with gastric cancer in perioperative period.

METHODSNinety-two patients with gastric cancer undergone radical operations were randomly divided into two groups: fast track group (n=46, fast track surgery) and control group(n=46, traditional surgery). Serum levels of tumor necrosis factor-alpha (TNF-alpha), interleukin-6 (IL-6) and C reaction protein (CRP) in the 92 patients were assayed preoperatively and at day 1, 3, 7 postoperatively, and the resting energy expenditure (REE) was also measured by indirect calorimetry in the morning. The postoperative hospital stay, duration of fever, medical cost, postoperative time of flatus and postoperative complications were recorded and compared respectively.

RESULTSAt postoperative day 1 and 3, serum levels of TNF-alpha were (12.67+/-2.68) fmmol/L and (13.19+/-2.75) fmmol/L in fast track group, (14.74+/-3.18) fmmol/L and (15.56+/-2.99) fmmol/L in control group; serum levels of IL-6 were (112.52+/-24.73) ng/L and (129.03+/-22.75) ng/L in fast track group, (123.90+/-22.52) ng/L and (142.67+/-20.33) ng/L in control group. The levels of IL-6 and TNF-alpha in fast track group were significantly lower than those in control group (all P<0.05). At postoperative day 1, 3 and 7, serum levels of CRP in fast track group were significantly lower than those in control group [d1(56.20+/-11.47) g/L vs (71.07+/-17.32) g/L, d3(136.09+/-19.78) g/L vs (157.78+/-28.18) g/L, d7 (48.53+/-12.95) g/L vs (64.72+/-19.73) g/L] (all P<0.05). At postoperative day 1 and day 3, the REE in fast track group were significantly lower those than in control group [d1(5713.96+/-619.44) kJ/d vs (6176.04+/-614.46) kJ/d, d3 (5298.49+/-639.36) kJ/d vs (5627.94+/-656.72) kJ/d] (all P<0.05). The postoperative duration of fever [2(2.0-3.0) d vs 4(2.8-4.0) d], postoperative time of flatus [3(2.0-4.0) d vs 4(3.8-5.0) d], postoperative hospital stay [6(6.0-7.0) d vs 8(7.0-8.3) d] and treatment expense [(27 201+/-3857) Chinese yuan vs (31 006+/-3555) Chinese yuan] in fast track group were also significantly lower than those in control group (P<0.01). There were no significant differences in complications between the two groups(P>0.05). The quality of life score on discharge in fast track group was significantly higher than that in control group (15.74+/-1.82 vs 14.67+/-1.27, P<0.01).

CONCLUSIONFast track surgery can ameliorate stress reaction, decrease postoperative patients' REE during perioperative period and accelerate the rehabilitation of patients with gastric cancer.

Adult ; Aged ; Female ; Humans ; Male ; Middle Aged ; Perioperative Care ; Rehabilitation ; methods ; Stomach Neoplasms ; rehabilitation ; surgery

Objective To evaluate calcium deficiency and demand in pre-puberty twins and to analyze the heritability of serum bone alkaline phosphatase(BALP).Methods A total of 73 pairs of twins aged 9-16 years were examined by BALP test.Microsatellite polymorphism Was used To diagnose the zygosity of twins,while both intraclass correlation coefficient method and Christian formula were perfortled to investigate heritability of serum BALP.Results The results of zygosity diagnosis displayed that 34 pairs of twins were monozygotic(MZ)twins and 39 pairs were dizygotic(DZ)twins.97.9％of the subjects appeared unusual in the activity of BALP,with activity of BALP>250 U/L in 43.1％of subjects and 200-250 U/L in 54.8％of the subjects.The intake of calcium Was unsatisfied in 48.4％of the boys and 39.0％in girls.Less than 10.0％ of the Sllbiects were satisfied with the intake of calcium in each age group while over 45.0％of the snbjects in 10-13 age group were deficient in calcium.Differences between the means of BALP in different sex groups(t=1.633,P=0.105)and different age groups(F=0.323,P=0.924)were not statistically significant.Heritability analysis displayed that intra-class variation.Inter-class variation.Intra-class correlation coefficient were 191.54,1462.22,0.77 in MZ twins,and those were 491.03,1475.57,0.50 in DZ twins respectively with the heritability of BALP activity as 0.54.Conclusion Calcium deficiency Is commonplace in pre-puberty twins.Our data showed that the BALP activity was influenced both by genetic(54％)and environmental(46％)factors.

Objective To determinate the prognostic value of etiology in patients with chronic systolic heart failure (CSHF).Methods Data of in-hospital patients with CSHF were investigated between 2000 and 2010 from 12 hospitals in Hubei province.All patients were followed up through telephone calls.Univariate and multivariate Cox proportional hazards analyses were then used to explore the differences in the all-cause mortality,heart failure (HF) mortality and sudden cardiac death (SCD) among patients caused by different etiologies.Kaplan-Meier curve were then constructed and Univariate and multivariate Cox regression analyses were used to select demographic and clinical variables in predicting the all-cause mortality,HF mortality and SCD in CSHF patients.Multivariate logistic models and ROC curve were developed with or without the cinfirmed etiology to assess the incremental additive information related to different etiologies.Results (1)Over the median 3 (2-4) years follow-up program,6453 (38.69％) patients died,including 5505 (33.00％) due to HF prognosis and 717 (4.30％) died of SCD.All-cause mortality rates accounted for 34.50％,54.30％,41.48％ and 15.76％,with HF mortality rates as 30.11％,44.95％,36.25％ and 13.10％.SCDs accounted 8.46％,8.45％,9.84％ and 1.05％ in patients with CHD,DCM,HHD and RHD,respectively.(2) Compared with RHD patients,the adjusted HRs for all-cause mortality were 1.554 (1.240 to 1.947;P＜0.001),1.405(1.119 to 1.764;P=0.003) and 1.315(1.147 to 1.467;P=0.005) while the adjusted HRs and 95％CIs for HF mortality were 1.458( 1.213-1.751 ;P＜0.001 ),1.763( 1.448-2.147;P＜0.001 ) and 1.281 ( 1.067-1.537; P=0.008),in patients with CHD,DCM and HHD,respectively.There were no significant differences in CHD (HR 3.345; 95％ CI,1.291 to 8.666; P=0.013 ) or HHD (HR 2.062; 95％CI,0.794 to 5.352; P=0.137 ),while only DCM ( HR 4.764; 95％CI,1.799 to 12.618;P=0.002) remained significant in SCD despite of the multivariate adjustment.(3) Etiology increased the sensitivity and specificity of predicting models for all-cause mortality(AUC 0.839,95％CI,0.832to 0.845 vs.0.776,95％CI,0.768 to 0.784) and HF mortality(AUC 0.814,95％CI,0.806 to 0.822 vs.0.796,95％CI,0.788 to 0.804) but not with SCD (AUC 0.777,95％CI,0.749 to 0.809 vs.0.747,95％CI,0.727 to 0.766).Conclusion CSHF due to CHD,DCM and HHD carried a worse prognosis than that of RHD.Different etiologies provided significant incremental prognostic information beyond readily available clinical variables for all-cause mortality and HF mortality.

Objective To investigate the prevalence and related factors of medicinal therapy in patients with chronic systolic heart failure (CSHF).Methods Data on in-hospital patients with CSHF were studied from 12 hospitals in Hubei province,in 2000 and 2010.Differences on gender and age were calculated and Multivariate Cox regression analysis was performed to determinate the independent risk factors of all-cause mortality.Results (1) 16 681 patients were enrolled in this study.Among which,6453 died during the 5.82 ± 1.63 years of follow-up.The annual medical expenditure was larger in the survival group than in the dead ones (3.19 ± 0.65 vs.3.32 ± 0.57,P＜0.01).(2)The prevalence of Angiotensin Ⅱ receptor blocker increased along with age which accounted as 7.73％,7.35％,12.26％,14.29％,17.19％,19.87％ and 20.49％,respectively,in the ＜30,30-39,40-49,50-59,60-69,70-79 and ≥80-year groups.The distribution of digitalis,diuretics,β-receptor blocker,Angiorensin- converting enzyke inhibitors showed inversed U shape.(3)The annual medical expenditure increased as patients got older,with age groups ＜30,30-39,40-49,50-59,60-69 and 70-79 years old as 2.96 ± 0.70,3.09 ± 0.62,3.15 ± 0.58,3.30 ± 0.59 and 3.25 ±0.58,respectively (P＜0.01).It reduced to the same level as in the 50-59 year-old group.The distribution of annual medical expenditure showed similar pattern in males.However,the trends were only found in patients at 50-59,60-69,70-79 and ≥80 years-old groups in female.Conclusion More attention should be paid to medicinal therapy in patients with CSHF.Medicinal therapy shifted with age and gender,of which females had more adverse trend than in males.