Objective The ability of working memory (WM) is to temporarily hold and manipulate information for cognitive tasks.The aim of this study was to investigate the causal flow distribution of multi-channel electroencephalographs (EEGs) during Sternberg visual WM task to help understand WM mechanism from the view of neural information transform.Methods Sixteen-channel EEGs were recorded from 8 healthy subjects during Sternberg task,total EEG data for 80 trials were recorded and preprocessed.The EEG powers for each channel were calculated via Fast Fourier transform (FFT).The feature channel was extracted based on the maximum power,and the feature frequency band for WM was determined by time-frequency analysis.The directed transfer function (DTF) and the value of causal flow in EEG feature frequency band were calculated.Results The EEG power focused on θ band (4-8 Hz) and at Fz channel.The maximum value of causal flow was located at Fz,and the first 4 maximum negative values of causal flow were at C3,C4,C5,C6.Conclusions The feature frequency band for WM is the θ band.The causal source (responsible region) is at Fz (frontal region) and the causal sinks are at C3,C4,C5,C6.

Objective: To study the prevalence of antibody to citrullinated human fibrinogen(ACF) in rheumatic diseases and the diagnostic values in rheumatoid arthritis.Methods: Human fibrinogen was deiminated by the peptidylarginine deiminase(PAD) in the presence of Ca~(2+) in vitro.ACF was detected by ELISA in 352 patients with rheumatic diseases(183 RA,121 SLE and 48 OA) and 108 healthy controls.The sensitivity and specificity in RA were calculated and the correlations between ACF and the clinical and laboratory parameters were analysed by SPSS statistical software.Results: Compared with SLE(25.62%),OA(18.75%) and healthy control(2.78%) respectively,the patients with RA had a significantly higher level of ACF(67.21%,P

Objective To introduce a new surgical method of reconstructing A ch illes tendon by transfer of the soleus tendon flap. Methods The method was desig ned on the basis of the anatomical characteristics of the superficial muscles as sociated with Achilles tendon. It was applied to treat 12 patients with Achilles tendon defects. These patients were followed up for 0.5 to 6 years (average 39 months). Results The curative effect of the method were assessed according to Ar ner-Lindholms evaluation criteria. 9 cases were rated as excellent, 2 fine an d 1 poor, with the total excellent and fine rate being 92%. Conclusions ①Misdi agnosis and improper initial treatment are the major causes of Achilles tendon d efects. ②Systematic training after operation is very important for good curativ e effects. ③The method mentioned above brings about less trauma, less negative effects on blood supply to Achilles tendon, and good healing after operation.

OBJECTIVE To study the drug resistance genes in imipenem-resistant Pseudomonas aeruginosa.METHODS Five main drug resistance genes:IMP,VIM,SPM and GIM which are pertinent with metal ?-lactamase and outer membrane protein oprD2 gene were analyzed using PCR method.RESULTS The oprD2 genes in 48 strains of imipenem-resistant P.aeruginosa were negative,and in 14 strains were positive from all 62 strains tested.There were 16 strains with positive IMP type and 5 strains with positive VIM type metal enzyme genes positive,7 metal enzymes producing strains were with negative oprD2 gene.The SPM and GIM metal enzyme genes detected were all negative.CONCLUSIONS The loss of outer membrane protein oprD2 gene is the main mechanism of imipenem resistance in P.aeruginosa in Tai′an area.

Objective To investigate the incidence and the possible risk factors of hepatic dysfunction in patients with Graves' disease (GD). Methods Totally 280 outpatients with hyperthyroidism (caused by GD) were divided in two groups: untreated group (131 patients) and treated group (149 patients). The hepatic function, serum thyroid hormone, TGAb and TMAb were detected for analysis of the incidence, clinical characteristics and correlative factors of the hepatic dysfunction. Results Patients who had at least one abnormal result of liver function test accounted for 70.99% in untreated group and 61.07% in treated group. The most common abnormal hepatic function parameter in patients with thyrotoxic hepatic lesion was increased alkaline phosphate enzyme (ALP), which was 57.3% in untreated group and 51.0% in treated group. Abnormalities of alanine transaminase (ALT), aspartate transaminase(AST), gamma-glutamyl tyanspeptidase (GGT) and total bilirubin (TBIL) were 28.2% (37/131), 18.3% (24/131), 10.7% (14/131) and 21.4% (28/131) in untreated group and 21.5%(32/149), 15.4%(23/148), 4.7% (7/149) and 20.1% (30/149) in treated group, respectively. The possibility of thyrotoxic hepatic dysfunction was correlated with the patients' age and FT3 and FT4 levels, but not with the genesis and course of disease, sex, family history of hyperthyroidism, or levels of TGAb and TMAb. Conclusion Abnormal results of liver function test are commom in patients with hyperthyroidism. Increased alkaline phosphate enzyme and alanine transaminase are the most common abnormal hepatic function parameters; the possibility of thyrotoxic hepatic dysfunction is correlated with patients' age and the level of thyroid hormones.

Objective To study the effects of olanzapine on glucolipid metabolism,liver function and prolactin level in childhood onset schizophrenia(COS) to provide reference for clinical medication.Methods Thirty-eight patients with COS aged 13-17 years old were treated with olanzapine for at least two weeks.The changes of body mass,alanine aminotransferase(ALT),aspartate aminotransferase (AST),total cholesterol (TC),triglyceride (TG),glucose (GLU) and prolactin (PRL) were detected and compared between before and after treatment.Results The body mass after medication in children patients was significantly increased,average increase by (3.50-t-1.90)kg (P＜0.01).The levels of ALT,AST,TC,TG and PRL after treatment were higher than before treatment (P＜0.05).However,there was no statistically significant difference in blood GLU level between before and after treatment(P=0.598).The body mass change before and after treatment was positively correlated with ALT and AST levels(r=0.366,0.377,P＜0.05);whereas the PRL level before and after treatment was negatively correlated with the body mass change (r=-0.432,P＜0.01).Conclusion Olanzapine can lead to the body weight gain and increase of ALT,AST,TC,TG and PRL levels in COS patients.

Ataxia Telangiectasia ; complications ; genetics ; Child ; Female ; Humans ; Lymphoma ; etiology ; Male ; Sibling Relations

BACKGROUND:So far, engineered myocardium is stil facing many problems. Research has demonstrated that bone marrow mesenchymal stem cells can be differentiated into myocardial cells. Polyglycolide and polycaprolactone are commonly used artificial polymers, which have good biocompatibility.
OBJECTIVE:To observe the growth of the poly(glycolic acid)/poly(e-caprolactone) copolymer patch in vitro in normal myocardium and infarcted myocardium.
METHODS:Bone marrow mesenchymal stem cells in Sprague-Dawley rats were separated using adherent separation and selection method, cultured in vitro. The third passage was labeled with DAPI. The bone marrow mesenchymal stem cellsuspensions (2×106/cm2) were produced and planted on poly(glycolic acid)/poly(e-caprolactone) copolymer scaffolds to form poly(glycolic acid)/poly(e-caprolactone) copolymer patch. After culturing for 48 hours, the specimens were observed under electron microscope, stained with hematoxylin and eosin, and then observed under light microscope. Rat models of myocardial infarction were established by ligating left anterior descending coronary artery. Poly(glycolic acid)/poly(e-caprolactone) copolymer patch was implanted into the normal and infarcted myocardium for 5 weeks. The survival of bone marrow mesenchymal stem cells was determined by the detection of pathology.
RESULTS AND CONCLUSION:Results of light microscope and electron microscope demonstrated that bone marrow mesenchymal stem cells grew three-dimensional y on poly(glycolic acid)/poly(e-caprolactone) copolymer patch. cells and patch were adhesive wel . Under laser confocal microscopy, compared with the first week, bone marrow mesenchymal stem cells were marked by DAPI in the myocardium at the fifth week. There were bone marrow mesenchymal stem cells marked by DAPI in the infracted area. Results of hematoxylin-eosin staining exhibited that bone marrow mesenchymal stem cells were detected in the infarct area. These results suggested that bone marrow mesenchymal stem cells adhered to the poly(glycolic acid)/poly(e-caprolactone) copolymer stent wel . The complexes of poly(glycolic acid)/poly(e-caprolactone) copolymer and bone marrow mesenchymal stem cells can be used for reparation of myocardium.

A complete explanation of the new idea,grounds,spirit,inner-contradiction of the 3 major documents in the new framework of epileptic knowledge re-defined by International League Against Epilepsy was made in accordance with the International League Against Epilepsy original articles.And the different recognition about them nowadays existed among our nerologists was also deeply explored.

1 ?mol?L-1,and it was defined as "delayed" MTX elimination.Intra-patient variability in C48 was significant(P=0.000).Risk factors that correlated with increased C48 of MTX were boys,abnormal urine routine tests within 1 week before infusions,concurrent infections within 2 weeks before infusions,and co-administration of ceftriaxone(P