Objective Working memory (WM) is one of important cognitive functions.The aim of this study was to investigate spatial distributions of electroencephalographs (EEGs) power during visual WM task,which may provide support for studying the principal frequency band and critical region related to WM.Methods 32-channel EEGs were recorded from 16 healthy subjects while they perform visual WM task.The data came from 240 trials and the original EEGs were preprocessed.Fourier transform was applied to calculate spatial distributions of EEGs power in the δ,θ,α,β,γfrequency bands and the percentage of each band in the total power.Results The percentages of δ,θ,α,β,γbands in the total power were (22.44±0.86)％,(31.88±0.55)％,(24.66±1.43)％,(13.54±0.64)％,(7.47±0.48)％,respectively.The power in the θ band was significantly higher than those in the other bands (paired t-test,P＜0.001).The θ power was focused in the frontal midline region.Conclusions The principal frequency band related to WM was the θ band and the critical region was the frontal region.

Objective To observe the clinical efficacy of scalp acupuncture plus acupuncture at Jiaji points (EX-B 2) in treating chronic fatigue syndrome (CFS).Method Seventy CFS patients were randomized into a treatment group and a control group, 35 cases in each group. The treatment group was intervened by scalp acupuncture plus acupuncture at Jiaji points (EX-B 2), while the control group was by ordinary acupuncture. The Fatigue Scale (FS)-14 was observed before and after treatment, and the clinical efficacies were compared.Result The FS-14 scores were significantly changed after treatment in both groups (P<0.01). After treatment, the FS-14 score of the treatment group was significantly different from that of the control group (P<0.05). The total effective rate and recovery-markedly-effective rate were respectively 91.4% and 71.4% in the treatment group, versus 82.9% and 45.7% in the control group. There was a significant difference in comparing the recovery-markedly-effective rate between the two groups (P<0.05).Conclusion Scalp acupuncture plus acupuncture at Jiaji points (EX-B 2) is an effective method in treating CFS.

Objective To assess the public health service quality objectively in Shenzhen,and promote the equity of basic public health services.Methods The criterion and method of the assessment were established by municipal health administrative department,the assessment of institutions and regions were conducted by experts selected by municipal professional institutions.Regional assessment was the comprehensive evaluation of public health service qualities of professional public health institutions,medical institutions and the community health centers.The assessment of the degree of public health service quality satisfaction was accomplished by a third-party institution.Results The accomplishment ratio of indicators for public health service quality was 93.2％.This ratio has witnessed a high increase with mental health institutions,occupational disease prevention and control institutions and health education institutions on one hand.On the other,it has dropped with institutions of disease control,chronic disease control and medical institutions within the region.On the whole,this ratio has increased with all the districts to different extents.Despite the overall improvement of public health capabilities citywide,imbalances are found among districts and institutions as well.Conclusion It is imperative to further improve the public health service system and equity while carrying out specific tasks in this respect.

Objective To explore the effect of polypharmacy assessment and intervention on elderly inpatients mainly in both economy and safety. Methods One hundred and forty elderly inpatients were selected. Fifty patients took less than 5 drugs, 75 patients took 5- 9 drugs, and 15 patients took more than 10 drugs. According to medication appropriateness index (MAI) and Beers criteria, the polypharmacy of elderly inpatients was assessed and intervened. The results were compared before and after intervention. Results The discrepancy rate of Beers criteria, incidence of potential risk, total scores of prescription MAI and average daily drug cost after intervention were significantly lower than that before intervention: 7.14% (10/140) vs. 16.43% (23/140), 22.14% (31/140) vs. 90.71%(127/140), 0(0,0)scores vs. 6.00(2.25,10.00)scores and (30.60 ± 19.71) yuan vs. (35.34 ± 26.84) yuan, and there were statistical differences (P<0.01 or <0.05). Conclusions Irregular medication exists widely in elderly patients, and the polypharmacy assessment and intervention can lighten the financial burden of elderly patients and improve the safety of drug therapy.

ObjectiveTo analyze clinical manifestations and treatment of eosinophilic gastroenteritis (EGE) in children.MethodsThe clinical data of 10 children with EGE under the treatment from June 2014 to June 2012 were analyzed retrospectively.ResultsThere were 10 children (6 males and 4 females) aged from 9 months to 14 years. Clin-ical symptoms of eight preschool and school age children included abdominal pain (8 cases), vomiting (4 cases), diarrhea (3 cases), ascites (3 cases), rash (3 cases), fever (2 cases) and hypoalbuminemia (2 cases). Clinical symptoms of two in-fant and toddler were diarrhea and hematochezia. Peripheral blood eosinophils were increased in 10 children. IgE was elevated in 9 children. One child had very high C-reactive protein. Endoscopic examination showed mucosal congestion, swelling, erythema, erosion. Multiple sites of biopsy showed eosinophil count> 20/HP. One child was diagnosed by lap-aroscopic exploration. The treatment included diet avoidance, omeprazole, anti-allergic drug. Four children were treated with corticosteroids. All children had been followed up for 6 months to 2 years. One child had relapsed.Conclusion The clinical manifestations of EGE are various. Endoscopic biopsy is necessary for diagnosis. Laparoscopy also is help-ful for diagnosis. Dietary and glucocorticoid therapy were effective.

The major assessment is the key link of the applied undergraduate education quality guarantee system. According to the spirit of the Ministry of Education, The Qiqihar Medical University developed the internal major assessment study and founded 8 first grade indexes and 26 second level indexes including educational idea, teaching staff, major construction. The university also established the major evaluation system, monitor and improve the university's teaching quality. This system makes sense to the establishment and improvement of undergraduate teaching quality guarantee system and has attained great achievement in the building of teaching staff, major construction, teaching environ-ment and teaching idea. Also the school has rectified the problems, making the work more perfect and the teaching better and better.

ObjectiveTo study the protective effects of tert-butylhydroquinone(tBHQ) on sodium arsenite (NaAsO2)-induced cytotoxicity and oxidative injuries. Methods Chang liver cells were pretreated with tBHQ[0(control), 5, 25 μmol/L]for 24 h, and then co-treated with tBHQ(5 μmol/L) together with NaAsO2[0(control),30, 40, 50, 60 μmol/L] for another 24 h, and Alamar blue reduction rates were used to evaluate cell viability,the results were expressed as the relative ratio of Alamar blue reduction rates between the experimental group and the control group. On the other hand, Chang liver cells were pretreated with tBHQ[0(control), 5, 25 μmol/L] for24 h,and then co-treated with tBHQ(5 μmol/L) together with NaAsO2[0(control), 40, 50 μmol/L] for another 24 h,and the levels of cellular reactive oxygen species(ROS) were detected by staining cells with 2',7'-dichlorofluorescin diacetate(DCFH-DA), the results were expressed as the relative ratio of mean fluorescence intensity between the experimental group and the control group. ResultsCell viability decreased dramatically by treatment with NaAsO2(30, 40, 50, 60 μmol/L), while relieved to some extent by pretreatment with 5, 25 μmol/L tBHQ, the main effects of NaAsO2 and tBHQ, as well as their interaction were all statistically significant(F =566.57, 55.09, 14.50,all P ＜ 0.05) ; the cell viability of NaAsO2(30, 40, 50, 60 μmol/L) pretreated with tBHQ(5, 25 mol/L) were 0.75 ±0.02, 0.70 ± 0.04, 0.59 ± 0.03, 0.43 ± 0.03 and 0.75 ± 0.02, 0.73 ± 0.03, 0.65 ± 0.02, 0.50 ± 0.02, respectively,all significantly higher than corresponding NaAsO2 alone groups(0.70 ± 0.03, 0.64 ± 0.03, 0.43 ± 0.03, 0.33 ±0.01, all P ＜ 0.05), the cell viability of NaAsO2(50, 60 μmol/L) pretreated with 25 μmol/L tBHQ was higher than corresponding 5 μmol/L tBHQ pretreatment groups(all P ＜ 0.05). On the other hand, 40, 50 μmol/L of NaAsO2 significantly induced hepatocellular ROS generation, while tBHQ(5, 25 μ mol/L) pretreatment significantly decreased NaAsO2-induced intracellular ROS levels, the main effects of NaAsO2 and tBHQ, as well as their interaction were all statistically significant (F =181.78, 60.55, 4.93, all P ＜ 0.05) ; the ROS levels of NaAsO2(40, 50 μ mol/L) pretreated with tBHQ(5, 25 μmol/L) were 1.87 ± 0.09, 1.80 ± 0.07 and 1.36 ± 0.11, 1.44 ± 0.12,all significantly decreased than corresponding NaAsO2 alone groups(2.30 ± 0.18, 2.18 ± 0.17, all P ＜ 0.05),the ROS levels of NaAsO2(40, 50 μmol/L) pretreated with 25 μmol/L tBHQ decreased than corresponding 5 μmol/L tBHQ pretreatment groups (all P ＜ 0.05). ConclusiontBHQ has a certain antagonism on arsenic induced cytotoxicity and oxidative injuries.

Objective To establish a time resolved fluoroimmunoassay (TRFIA) method for detecting Glypican 3 (GPC3) and to explore the diagnostic value of serum GPC3 for hepatic carcinoma (HCC). Methods Microplate coated with anti-GPC3 monoclonal antibody 7C8 and GP9 labeled with Eu3+ were used to establish TRFIA kit. The serum concentrations of GPC3 in 41 HCC patients and 44 chronic hepatitis (CH) patients were quantitatively analyzed. AFP was detected by with lowest limit of 2.06 μg/L. The CV of inter and intra assay were 12.25% and 12.91%, respectively. The average serum concentration of GPC3 in HCC patients was (86.68±110.39) μg/L (median: 56.98 μg/L). But in CH patients it was only (14.77±29.48) μg/L, which was significantly lower than that in HCC (Wilcoxon W=1335.00, Z=-4.99, P<0.001). With diagnostic cut-off value set at 42.94 μg/L, the diagnostic sensitivity and specificity of TRFIA GPC3 for HCC were 58.5% (24/41) and 95.5%(42/44) respectively. The diagnostic sensitivity of AFP was 46.3% (19/41) in 41 HCC patients, and was raised to 78.0% (32/41) when combined with GPC3. Conclusions Serum GPC3 assay by TRFIA is established and it could increase the diagnostic sensitivity for HCC when combined with AFP.

Objective To investigate the compartmentalization of human immunodeficiency virus (HIV)infection and CD4~+ T lymphocytes between gastric mueosa and peripheral blood from patients with acquired immune deficiency syndrome(AIDS).Methods Thirty-five AIDS patients and 10 HIV seronegative subjects were enrolled in this study.The gastric mucosal biopsies were done by gastroscope and peripheral blood samples were collected.The digoxin labeled HIV-1 double-stranded cDNA probes for the long terminal repeat(LTR)and gag gene of HIV-1 genome were prepared by polymerase chain reaction(PCR).In situ hybridization was used to detect HIV infection in gastric mucosal tissues and peripheral blood mononuclear cells(PBMC)of AIDS patients.CD4~+ T lymphocytes were determined by immunohistochemistry method.The data were analyzed using t test.Results HIV positive rates were(1.67±1.48)% in gastric mucosa and(19.37±9.23)% in PBMC of AIDS patients who had not received highly active antiretroviral therapy(HAART).The HIV positive rates in gastric mucosa were not significantly different between AIDS patients without treatment and those treated with HAART(t=-0.996,t=-0.794,t=-0.461;P＞0.05).HIV positive rate on PBMC film preparation in patients who had received HAART for 1-4 years was (4.25±3.47)%,which was significantly lower than untreated group[(19.37±9.23)%](t=3.000,P＜0.05).The positive rate of CD4~+ T lymphocytes was(12.53±8.14)% in gastric mucosal mononuclear cells(MMC)and(19.00±9.55)% in PBMC of AIDS patient who had not received HAART.Even after received HAART for 1-4 years,the positive rate of CD4 ~+ T lymphocytes in MMC were(37.44±18.00)%,which was still lower than control group[(50.35±3.41)%](t=-4.620,P＜0.01);while the positive rate of CD4~+ T lymphocyte in PBMC was similar with that of control group(t=-2.094,P＞0.05).Conclusion The compartmentalization of HIV infection and CD4~+ T lymphocyte counts exists between gastric mucosa and peripheral blood from AIDS patients.

A capillary electrophoretic method was developed for the separation of enantiomers of naphthylgly-cidic ether(NGE). Several cyclodextrins(CDs) were applied as the chiral selectors and it was found that the ionic modified highly sulfated cyclodextrin(HS-β-CD) could give satisfactory enantioselectivity. In addition,the effects of the pH value of the buffer system,the concentration of the HS-β-CD,capillary temperature and the running voltage on the chiral separation were investigated systematically. The result showed that under the optimized conditions of pH 2. 5,20 mmol/L H_3PO_4-triethanolamine buffer containing 2% highly sulfated cyclodextrin ( HS-β-CD) at capillary temperature 20℃ in the reversed polarity voltage of - 18 kV,the enantiomers of naphthylglycidic ether were baseline separated. This method is simple,precise and can be applied to the chiral separation of naphthylglycidic ether enantiomers and determination of enantiomers excess(ee,% ).