Objective To investigate the effects of Astragalus polysaccarides (APS) on 2,4,6-trinitrobenzenesulfonic acid (TNBS)-induced colitis in rats. Methods Forty male Sprague-Dawley rats were randomly divided into five groups (n = 8 ): control group, TNBS group, low-dose APS group, high-dose APS group, and prednisone group. Experimental colitis was induced in rats by enema administration of TNBS. Rats in APS and sions and histological damages were determined, and the activity of myeloperoxidase (MPO) was measured in the excised colonic tissues. Cytokine levels including interleukin (IL)-4 and IL-10 were determined by enzyme-linked immunosorbent assay. Results Both macroscopic lesions and histological colonic damages induced by TNBS were reduced by low-dose APS treatment. These were accompanied by significantly attenuated colonic MPO activity (P = 0. 03) and the increase of IL-4 and IL-10 levels. The macroscopic lesions and MPO activities of high-dose APS group were higher than TNBS group, histological damage and level of IL-4 were lower, and level of IL-10 was higher, but all without statistical significance. Levels of IL-4 and IL-10 were lower than those of TNBS group, but there was no significant difference between prednisone group and TNBS group. Levels of IL-4 and IL-10 were significantly lower in prednisone group than in control group ( P = 0. 049, P = 0. 001 ). Conclusions Different doses of APS have different effects on TNBS-induced colitis. Lower dose of APS has the therapeutic potential inexperimental colitis, while higher dose of APS may aggravate the disease.

Objective To assess the nutritional risk of patients with inflammatory bowel disease (IBD).Methods The nutritional status of 112 IBD patients from PUMC Hospital were evaluated by Nutritional Risk Screening 2002 (NRS 2002).Using Chinese standard,a body mass index (BMI) that was lowered than 18.5 kg/m~2 according to clinical material was regarded as malnutrition,and the score was recorded as 3.The se-verity of ulcerative colitis (UC) was evaluated using True-Love criteria as mild,moderate,and severe.Crohn's disease (CD) was evaluated using Harvey-Bradshaw Index as in remission stage (≤4),moderately active stage (4-8),and severely actively stage (≥9).Results All these 112 patients,including 70 UC cases and 42 CD cases,were evaluated by NRS2002.Forty-five patients (40.2%) were judged as at the risk of malnutrition.The incidence of malnutrition was significantly higher in CD patients than in UC patients (52.4% vs.32.9%,P<0.05).It was also significantly correlated with the severity of disease.In patients with severe IBD,the rate of mal-nutrition evaluated by BMI according to clinical material was significantly lower than the rate of nutritional risk.Con-clusions The risk of malnutrition is high in IBD patients.NRS 2002 can be used for nutritional risk screening.

Anti-angiogenesis has been one of the important strategies in treating tumor metastasis,diabetic retinopathy,rheumatic arthritis etc.Angiogenesis models have played an active role in studying the mechanism of angiogenesis and developing drugs of pro-or anti-angiogenesis.A common problem faced by angiogenesis researchers has been the difficulty of choosing suitable models.This paper reviews principal models in use for some details and their advantages and shortages.

ObjectivesTo explore the characteristic of different subtypes of depression on prefrontal lobe and hippocampus by proton magnetic resonance spectroscopy (1H-MRS),and its relationship.Methods 46 patients of depression,which were met with the third edition of the Chinese Classification of Mental Disorders (CC-MD-Ⅲ ) since December 2010 to March 2012 from Mental Diseases Prevention and Treatment Institute,were examined at prefrontal lobe and hippocampus by multi-voxel 1 H-MRS.They were divided into male ( n =25) and female ( n =21 ),early-onset subtype ( n =26) and late-onset subtype ( n =20 ),short-duration of illness ( n =23 )and long-duration of illness ( n =23 ) by different criteria.The N-acetylaspartate ( NAA),Choline-congtaining compounds (Cho),and Creatine compounds (Cr) were measured and the ratios of NAA/Cr,Cho/Cr were determined.ResultsOn left prefrontal lobe,the NAA/Cr ratios in patients of male ( 1.83 ± 0.19),late-onset subtype (1.86 ±0.16),and short-duration of illness ( 1.83 ±0.17) showed higher than those in female ( 1.70 ±0.12,t=2.711,P ＜ 0.01 ),early-onset subtype ( 1.70 ± 0.19,t =3.028,P ＜ 0.01 ),and long-duration of illness ( 1.71±0.20,t =2.192,P＜0.05).Both on left prefrontal and on left thalamus,the ratios of NAA/Cr were positively correlated with the age of onset ( r=0.493 and 0.478,P＜0.01 ),and were negatively correlated with the duration of illness ( r =- 0.482 and - 0.470,P ＜ 0.01 ).ConclusionsDifferent subtypes of depression maybe have different characteristics of 1H-MRS due to the age of onset and the duration of illness.

ween WHO histological subtype and Masaoka clinical stage, and their combination is valuable for guiding postoperative treatment in thymoma.

Objective To express and characterize the virus-like particles( VLPs) of H5 subtype containing of hemagglutinin ( HA ) and matrix 1 ( M1 ) protein by using Baculovirus-insect cells .Methods Full length genes encoding HA protein from the A/Indonesia/05/2005(H5N1) strain and the M1 protein from the A/Anhui/01/2005 ( H5N1 ) strain were cloned into a baculovirus expression vector to construct pFBD-M1-HA.The expression of HA and M1 proteins were detected by Western blot and indirect immunoflu-orescence after the transfection of Spodoptra frugiperda (Sf9) insect cells with recombinant baculovirus.Pu-rified VLPs were analyzed by SDS-PAGE and visualized with transmission electron microscope.The biologi-cal activity of purified VLPs was detected by hemagglutination test.Results The HA and M1 proteins of H5 subtype expressed by baculovirus-insect cells could be self-assembled into the functional mature VLPs.The hemagglutination titer of VLPs was as high as 1024 HAU/50μl.Conclusion The H5 subtype VLPs as pre-pared in this study would pave a way for the development of a candidate recombinant A ( H5) vaccine.

Objective To investigate the nutritional risks in hospitalized patients with liver diseases and work out nursing countermeasures.Methods Forty patients with liver cirrhosis, 40 patients with primary liver cancer and another 40 revisiting after liver transplantation involved in the investigation with a self-designed general information questionnaire and the nutritional risk screening 2002. The three groups were compared in terms of nutritional risks.Results Among the total 120 patients,38.3%(46/120)of them took the nutritional risk and even 12.5%(15/120)had the risk of undernourishment.The risk in the patients with liver cirrhosis was higher than that in the other two groups(χ2=9.899 and 11.4299 and P=0.002 and 0.001,respectively).Conclusions The nursing staffs should pay attention to the nutritional status of patients with liver diseases, especially the patients with liver cirrhosis.It is necessary to take effective measures in order to improve the nutritional status of the patients to reduce the nutritional risks.

Objective To identify the metabolic alterations in the prefrontal lobe in male patients with schizophrenia by proton magnetic resonance spectroscopy (~1H-MRS), and to study the relationship between metabolic alterations and executive function. Methods The study was conducted in 26 male schizophrenics with medicine-free for at least 7 days and 28 normal controls. A multi-voxel ~1H-MRS on the prefrontal lobe was performed in all the subjects within 24 hours of admission. Wisconsin Card Sorting Test (WCST) was used to evaluate executive function. The NAA, Cho and Cr were measured and the ratios of NAA/Cr, Cho/Cr and NAA/(Cho+Cr) were calculated. Results Compared with normal controls, the patients demonstrated significantly lower NAA/Cr ratio (t=2.93, P<0.01) in the left prefrontal lobe and poorer performance in WCST (P<0.05). The NAA/Cr ratio in the left prefrontal lobe was positively associated with the responses errors and the perseverative errors of WCST(r=0.45, P＜0.05; r=0.47, P＜0.05)and negatively associated with the categories completed and conceptual level responses(r=-0.54, P＜0.01; r=-0.56, P＜0.01). Conclusions Abnormalities in neuronal function and/or integrity are present in the left prefrontal lobe of male schizophrenics. The neuron damage in the left prefrontal lobe of male schizophrenic may be the primary cause of cognition dysfunction.

Objective:To investigate the influence of B-lymphocyte chemoattractant on the immune response of CVB3 fusion gene vaccine pcDNA3/C3d3-sVP1.Methods:BALB/c mice were divided into 4 groups randomly, and injected intramuscularly with pcDNA3,pcDNA3/BLC,pcDNA3/C3d3-sVP1 and the combination with the plasmid pcDNA3/BLC and pcDNA3/C3d3-sVP1.At a certain time,they were measured for the titers for neutralizing antibodies,specific CTL cytotoxic activity.The protective efficacy of DNA vaccinations was evaluated by titers of blood viruses and survival rate.Results:The titers for antibodies increased with the time of inoculation.More specifically,the antibody titers (42.17±1.43) and the specific CTL cytotoxic activity (41.3%±3.51%) of the mice in the combination group were remarkably stronger than in the mice with pcDNA3/C3d3-sVP1(P＜0.05),but the virus titers of blood was lower.After lethal CVB3 challenge,the protection of mice from death in the combination group with the plasmid pcDNA3/BLC and pcDNA3/C3d3-sVP1 was 44%.Survival curves indicated that the survive state of combination group was better than others.Conclusion:BLC can strongly enhance the specific immunity induced by C3d3-sVP1.

Objective To identify the metabolite levels and to study the potential effects of risporidone tablets on prefrontal lobe and thalamus in male first-episode schizophrenia by proton magnetic resonance spectroscopy (1H-MRS).Methods Twenty-two male first-episode schizophrenics were examined at prefrontal lobe and thalamus by multi-voxel 1H-MRS before and after 8 weeks' risperidone tablets treatment,and 30 normal controls were assessed once.The patients were also received positive and negative syndrome scale(PANSS) and Wisconsin card sorting test (WCST) before and after treatment.The N-aeetylaspartate ( NAA ),Choline-congtaining compounds (Cho),and Creatine compounds (Cr) were measured and the ratios of NAA/Cr,Cho/Cr were determined.Results On left prefrontal lobe and left thalamus,the NAA/Cr ratio in patients before treatment demonstrated lower than those in normal controls ( ( 1.37 ± 0.33 ) vs ( 1.61 ± 0.38 ),t =2.57,P ＜ 0.05 ; ( 1.46 ± 0.35 ) vs ( 1.71 ± 0.38 ),t =2.36,P ＜ 0.05 ).There were no significant differences in both the ratios of NAA/Cr and Cho/Cr between pre- and post-treatment (P＞0.05 ).The changes of NAA/Cr on left prefrontal lobe post-treatment were negatively related with the alterations of the total score of PANSS ( r =- 0.46,P ＜ 0.05 ),the score of negative symptoms ( r =- 0.48,P ＜ 0.05 ),the responses errors ( r =- 0.42,P ＜ 0.05 ) and the porseverative errors ( r =- 0.40,P ＜ 0.05 ),meanwhile,positively related with the alterations of the categories completed ( r =0.44,P ＜0.05 ) and the conceptual level responses ( r =0.42,P ＜ 0.05 ).Conclusions Abnormalities in neuronal function and/or integrity presented on prefrontal lobe and thalamus maybe exist in male first-episode schizophrenics.Short-term antipsvchotic treatment with risperidone tablets may have no effects on measures of prefrontal lobe and thalamus.