BACKGROUND:Studies have found that liver cels can synthesize insulin after giving pancreatic and duodenal homeobox 1 (PDX1) gene. Anti-CD20 monoclonal antibody can inhibit the immune reaction of insulin-producing liver cels, but the mechanism is unclear. OBJECTIVE:To observe the influence of interleukin-10 gene on liver cels and liver PDX1 expression in nonobese diabetic mice after interfered by adenovirus vector-mediated murine interleukin-10 and anti-CD20 monoclonal antibody. METHOD:Forty nonobese diabetic female mice aged 3-5 weeks were randomly divided into anti-CD20, anti-CD20 + interleukin-10, interleukin, and control groups. Mice in each group were respectively injected with anti-CD20 monoclonal antibody, anti-CD20 monoclonal antibody + adenovirus vector-mediated murine interleukin-10, adenovirus vector-mediated murine interleukin-10 and normal saline on days 1, 8, 15 and 21via tail vein. RESULTS AND CONCLUSION:At 12 weeks, the blood glucose level of mice treated with anti-CD20 monoclonal antibody and/or interleukin-10 was significantly reduced compared with the control group, while the insulin, interleukin-10 and CD20 expression levels in the serum and liver were significantly increased, the liver PDX1 expression was also upregulated. Anti-CD20 monoclonal antibody with interleukin-10 had more obvious effects than the single use. No matter the combined intervention or single use, anti-CD20 monoclonal antibody and interleukin-10 show no impact on the inflammation of liver cels. Anti-CD20 monoclonal antibody and/or interleukin-10 increases PDX1 expression in nonobese diabetic mice.

Objective:To explore the value of two-dimensional speckle tracking echocardiographic imaging (2D-STI) for assessing partial and global left ventricular functional changes at pre-and post-percutaneous coronary intervention (PCI) in patients with chronic total coronary occlusion.
Methods:Echocardiograph was conducted in 23 chronic total coronary occlusion patients at pre-PCI and 1 day, 3, 6 months post-PCI to examine left ventricular ejection fraction (LVEF), meanwhile 2D-STI was applied to obtain the global longitudinal strain (GLS) value of left ventricle.
Results:In all 23 patients, for LVEF, compared with pre-PCI (59.29±12.15)%, it was increased at 3 and 6 months post-PCI (60.00±12.35)%and (61.37±11.8)%respectively, all P<0.05;for GLS value, compared with pre-PCI (-12.77d wit )%, it was decreased at 1 day and 3, 6 months post-PCI (-13.23ecrea)%and (-15.67ecrea)%, (-16.97ecrea)%respectively, all P<0.05.
Conclusion:PCI could effectively improve left ventricular function in patients with chronic total coronary occlusion, 2D-STI technology may quantitatively assess those changes at the early stage.

Objective To investigate the effects of transcranial ultrasound stimulation (TUS) on the motor functioning and anti-oxidative capacity of mice with Parkinson's disease (PD).Methods Thirty-two inbred C57BL male mice were randomized into a normal control group,a model group,a sham TUS group and a TUS group (n =8 for each group) according to a random number table.A PD model was induced in the mice of the model,sham TUS and TUS groups by injecting 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine (MPTP) at 20 mg/kg intraperitoneally,while those in the normal control group were given saline.Low intensity (1 W) focused ultrasound (LIFU) at a frequency of 0.5 MHz was then applied to stimulate the nigra region,except for the mice in the sham TUS group,which were treated with the same procedure but with no ultrasound output.A pole climbing test was carried out before,2 weeks and 5 weeks after the injection of the MPTP.After 5 weeks the animals were sacrificed and the whole brain malondialdehyde (MDA) and glutathione peroxidase (GSH-Px) content were measured.Results No significant differences in in pole climbing scores were observed among the four groups before the MPTP injections.However,the average value decreased significantly to (4.30 ± 1.19),(4.40 ± 0.23) and (4.80 ± 0.23) for the model,sham TUS and TUS groups respectively 2 weeks after the injection.It then rose to (5.12 ±0.83) and (5.51 ± 1.21)for the first two groups 3 weeks later,but was still lower that before the injection.After 5 weeks the TUS group's average score was significantly higher than 3 weeks earlier and than that of the model group and the sham TUS group.Compared with the control group,the other groups' average scores were all lower 2 weeks after MPTP injection,and those of the model and the sham TUS groups remained so 5 weeks after the injection.Five weeks after the injection,the average MDA content of the model group (10.2 ± 1.1 nmol/ml) and the sham TUS group (9.4 ±1.3 nmol/ml) were significantly higher than the normal control group (4.5 ± 0.8 nmol/ml),as well as the TUS group (6.8 ± 0.9 nmol/ml).However,GSH-Px enzyme activity in the model group (100 ± 35.4 U/mgprot) and the sham US group (444 ± 24.9 U/mgprot) was significantly lower than that in the normal control group (1262.5 ± 53 U/mgprot),together with the TUS group (1047.3 ± 77.8 U/mgprot).Conclusion TUS can improve motor function in PD,at least in mice.This may be due to its anti-oxidative capacity.

Objective To evaluate cardiac biomarkers as biological risk factors for cardiovascular and all-cause motality in HD patients.In addition,a multimarker approach including inflammatory index was performed to improve the cardiovascular and all-canse risk assessment of these patients.Methods The author measured Troponin-T (TnT),N-terminal pro brain natriuretic peptide (NT-proBNP) and high-sensitivity C-reactive protein (HsCRP),collected the clinical data at baseline (January 2012) in 229 HD patients in three hemodialysis centers in Haidian District of Beijing,recorded time and cause of death in the next 1000 days.Kaplan-Meier was used to calculate survival rate and impact factors of prognosis.Cox proportional hazard model was used to estimate significance of =TnT,NT-proBNP and HsCRP and adjusted hazard ratios (HRs) of death.Results During the followup,37 patients died,mainly from cardiac cause (54.05％,20/37).Univariate analysis found old age,diabetes,cardiovascular disease,low serum albumin,CRP≥3 mg/L,TnT≥0.1 mg/L,NT-proBNP≥ 4381 ng/L were associated with prognosis.Elevated cTnT,NT-proBNP or HsCRP were all associated with increased cardiovascular and all-cause motality.Moreover,the combination of all parameters (NTproBNP≥4381 ng/L and TnT≥0.1 mg/L and HsCRP≥3 mg/L) were dramatically associated with increased cardiovascular cause mortality (HR=25.25,P ＜ 0.01) and all-cause mortality (HR=27.33,P ＜ 0.01).The association were significant even after full adjustment for cardiovascular (HR=14.33,P ＜ 0.01) and all-cause mortality (HR=1 1.54,P ＜ 0.01) respectively.Conclusions A combined index of cardiovascular risk factors could provide supplementary risk stratification in HD patients for cardiovascular mortality and all-cause mortality,strongly supporting the annual routine determination of these biomarkers.

Objective To investigate MR findings and dynamic changes of the brain after gas explosion,and to evaluate the relationship between MR findings and post-traumatic stress disorder (PTSD).Methods Forty-nine survivors of a gas explosion (group A) were examined with brain MRI within 1 to 3 days,and serial MR follow-up examinations were also performed.Forty miners not under the ground that day were assigned as group B,and 40 staff working on the ground as group C.The signal intensity values of hippocampus and globus pallidus on T2WI were measured in the three groups and F test was performed by using SPSS 13.0.The relationship between signal intensity values of hippocampus/globns pallidus and PTSD was explored,and the relationship between ADC values of hippocampus and PTSD was also investigated.Results In group A,slight low signal on T1WI and high signal on T2WI were detected on initial MRI in hippocampus (33 cases),globus pallidus (12 cases),cortex (10 cases),and midbrain (2 cases),respectively.On follow-up MRI at 2 months,lesions in hippocampus disappeared (25 cases) or remained slight high signal on T2WI (8 cases),lesions in globus pallidus disappeared (3 cases,5 sides) or showed shrinkage and encephalomalacia (9 cases),cortical lesions resulted in encephalomalacia in 2 cases and returned normal in the others,and lesions in the midbrain showed encephalomatacia.For comparison of T2 signal intensity values in hippocampus and globus pallidus,there was significant difference between group A and group B(P <0.01),and also between group A and group C(P <0.01),but no difference was detected between group B and group C (P>0.05).In group A,the T2 signal intensities of PTSD and non-PTSD were 455±37 and 462±53 in the left hippocarnpus,and 458±36 and 460±43 in the right hippoeampus on 1 to 3 days,and the T2 signal intensities of PTSD and non-PTSD were 438±29 and 424±37 in the left hippocampns,and 442±31 and 430±32 in the right hippocampus at 2 months.The T2 signal intensities of PTSD and non-PTSD were 361 ±35 and 366±63 in the left globus pallidus,and 363 ±41 and 375±62 in the right globus pallidus on 1 to 3 days,and the T2 signal intensities of PTSD and non-PTSD were 341±24 and 337±39 in the left globns pallidus,340±26 and 332±35 in the tight glohus pallidns at 2 months.There was no difference of T2 signal intensity values in hippocampus and globus pallidus between PTSD and non-PTSD( t=0.350,0.826,0.503,0.907,P>0.05).In group A,ADC values of PTSD and nun-PTSD were (8.1±1.1)×10-4 and(8.1 ±0.9)×10-4mm2/s in the left hippocampus,and (8.2±1.0)×10-4 and(8.2±0.8)×10-4mm2/s in the tight hippocampus on 1 to 3 days,ADC values were (8.8±0.7)×10-4 and (9.0±1.0)×10-4mm2/s in the left hippocampus,and (8.5±0.9)×10-4 and (9.3±1.1)×10-4mm2/s in the tight hippocampus at 2 months.ADC values in hippocampns showed no difference between PTSD and non-PTSD(t=0.016,0.081,P>0.05)on initial MRI,but showed significant difference between PTSD and non-PTSD in tight hippocampus (t=7.407,P < 0.05) on follow-up MRI at 2 months,while no difference in left hippocampus (t =0.333,P>0.05) was observed at 2 months.Conclusion Hippocampns and globus pallidus are the most vulnerable structures in gas explosion.The occurrence of PTSD may be related to the injury of fight hippocampus,but not related to the injury of globns pallidus.