The information commons concept-based stereoscopic resources support system for academic library with brand-new connotations and its application were proposed according to the increasing development and expansion of informationization, networking and digitization in different social fields, the significant change in disseminating methods of information resources, and the need of readers for library service.

Objective To investigate the expression of Toll-like receptor 4 (TLR4) of peripheral blood mononuclear cell (PBMC) in the different prognosis of patients with severe sepsis and its relation with endotoxin-tolerant.Methods Thirty-five patients with severe sepsis (severe sepsis group) and 15 healthy volunteers (control group),respectively stayed in ICU 24 h and physical examination in the day measured TLR4 expression of PBMC by flow cytometry and measured the serum of tumor necrosis factor (TNF)-α and interleukin (IL)-10 by enzyme-linked immunosorbentassay.Simultaneous separation of peripheral blood of PBMC,addition of 40 μ g/ml lipopolysaccharide (LPS) cultured for 24 h,and TLR4 expression of PBMC was measured in the same manner and the culture supernatant of TNF-α and IL-10.Results Thirty-five patients with severe sepsis survivor 25 cases (survivor group) and death 10 cases (death group),28 d death rate was 28.6％ (10/35).The TLR4 expression of PBMC in severe sepsis group was significantly lower than that in control group [(11.09 ± 8.90) MFI vs.(33.72 ± 12.59) MFI,P ＜ 0.01],the serum TNF-α and IL-10 in severe sepsis group were significantly higher than those in control group [(96.66 ± 45.33) ng/L vs.(2.53 ± 1.21) ng/L,(149.79 ± 67.15) ng/L vs.(34.56 ± 19.08) ng/L,P ＜ 0.01].There was no significant difference in TLR4 expression of PBMC between survivor group and death group (P ＞ 0.05).The TLR4 expression of PBMC in control group after LPS stimulation was significantly higher than that before LPS stimulation [(50.22 ± 19.23) MFI vs.(33.72 ± 12.59) MFI,P ＜ 0.05],survivor group and death group after LPS stimulation were significantly lower than those before LPS stimulation [(4.55 ± 2.30) MFI vs.(11.21 ±7.92) M FI and (5.46 ± 3.44) M FI vs.(10.15 ± 9.70) MFI,P ＜ 0.01].The culture supernatant of TNF-α,IL-10 in survivor group and death group were significantly lower than those in control group [(22.34 ± 8.27)and (19.49 ±5.35) ng/L vs.(88.70 ±34.21) ng/L,(54.29 ±32.89) and (98.04 ±40.26) ng/L vs.(146.56 ± 52.18) ng/L,P ＜ 0.01],but the culture supernatant of IL-10 in death group was significantly higher than that in survivor group (P ＜ 0.05).Conclusion Different prognosis of patients with severe sepsis have endotoxin tolerance and different inflammatory cytokine secretion abifity.

A method to assess library-holding journals according to their weighted citations was proposed in light of the actual needs of users for core journals, the use of library-holding journals and references by authors in different orders of precedence.The Western journal of rheumatology, highly cited by authors of Second Military Medical U-niversity, were assessed using this method, showing that this method is better than the citation analysis-based tra-ditional method in assessment of journals.

A simple and effective method for the duplex PCR detection was developed by using sequences of exogenous gene(RDV MP-)and endogenous gene(Zein)as templates for PCR amplification.The results of routine PCR amplification for RDV MP-gene in transgenic maize suggested that RDV MP-gene can stably inheritate in transgenic plants and their progenies;The duplex PCR detection of all negative and part positive samples that obtained by routine PCR amplification confirmed that above negative results were exact,also showed that the quality of extracted DNA can meet the need of PCR amplification.The error ratio of negative samples was 1.4%.The method used in this study was simple and credible and can be used to detect transgenic plants and their products.

Objective To explore the relationship between music preferences and mental health in medical students and to propose countermeasures.Methods Music Preferences Questionnaire and Chinese college students mental health scale(CCSMHS) were used to test 538 randomly selected medical students and the data was analyzed by descriptive statistics,T test and variance analysis with SPSS 20.0 and the inspection level was α=0.05.Results ①Statistically significant (P＜0.05) differences were found on somatization,anxiety,depression,inferiority,paranoid,force,social withdrawal,reliance,impulse and psychotic tendencies in medical students with different preference of music style; ②Statistically significant (P＜0.05) differences were found on anxiety and inferiority in medical students with different preference of music type; ③Statistically significant (P＜0.05) differences were found on anxiety,depression,paranoid,force,social withdrawal and reliance in medical students with different participating ways of music; ④Statistically significant (P＜0.05) differences were found on somatization,anxiety,inferiority and paranoid in medical students with different attitude about participating music activities; ⑤Medical students with different preferences of music activities preferences did not have significant difference on factor of mental health(P＞0.05).Conclusion The relationship between medical students' mental health and music preferences is very close.By training and guiding music preferences of medical students in mental health education,we can improve their mental health effectively.

Objective Establish rabbit VX2 soft tissue tumor model,and treat it with percutaneous ethanol injection(PEI)under the guidance of magnetic resonance imaging.Make ready for the therapeutic evaluation with functional magnetic resonance imaging. Methods Fifteen healthy New Zealand white rabbits were included in this study.0.2 mL tumor tissue suspensions were injected into the rabbits’posterior limb.14 days later,all rabbits were underwent conventional MRI examination.PET were performed to all the tumors under the guidance of MRI in the next day of the examination.T2 WI was used as guidance and monitoring means.MR com-patible puncture needle with lateral hole was stabed into the lesion center,and inj ected anhydrous ethanol according to the volume of tumors’diameter (1 mL/cm )slowly.the tumors signal characteristics,morphological feature and pathological feature were ob-served pre and post-operation.Results All of the 1 5 rabbits were established soft tissue tumor model successfully;the success rate is 100%.The tumors were oval or round,3-4 cm in diam.MRI scanning showed low signal on T1 WI and high signal on T2 WI be-fore PEI.PEI was performed to all the tumors under the guidance of MR successfully with 3.5 mL ethanol injected into the tumors in average.T2 WI could monitor the ethanol in dispersion and distribution within the tumors clearly.Histologically,tumors were composed of large,uniform,oval/round cells arranged in solid nests which was intensive in the periphery of tumors.Necrosis tissue was apparent in the center of the tumors.10 days after operation,most tissue in the periphery of tumors was coagulative necrosis , only a few tumor cells left.Ranges of necrosis in the tumors center were obviously increased compared with pre-operation.Conclusion Rabbit VX2 tumor of soft tissue model is suitable for the therapeutic evaluation of tumor .It is an animal model which has the characteristic of simple to operate and high rate of suc-cessful.MR T2 WI can monitor the ethanol in dispersion and distribution within the tumors clearly.It is a good guidance and monitoring imaging method of tumor ablation.

To explore the antagonistic effect of gingerols against the inflammation induced by lectin from Pinellia ternata. In this study, ELISA method was used to determine the effect of different extracts from gingerols on the release of inflammatory factor TNF-α from macrophages induced by lectin from P. ternata. The fluorescence probe was used to determine the effect of gingerols on the changes in ROS of macrophages induced by lectin from P. ternata. The western-blot method was applied to study the effect of gingerols on the increase in expression of cell receptor interacting protein RIP3 in macrophages induced by lectin from P. ternata. The scanning electron microscope (SEM) was used to study the effect of gingerols on morphological changes in macrophages induced by lectin from P. ternata. According to the results, gingerols can significantly inhibit the release of inflammatory factor from macrophages induced by lectin from P. ternata, ROS overproduction and increase in RIP3 expression. SEM results showed that gingerols can inhibit the cytomorphosis and necrocytosis induced by lectin from P. ternata. Fresh ginger's detoxication may be related to gingerols' effects in inhibiing release of inflammatory factor, ROS overproduction and increase in RIP3 expression caused by macrophages induced by lectin from P. ternata, which are mainly inflammatory development.
Animals ; Catechols ; pharmacology ; Cells, Cultured ; Drug Antagonism ; Fatty Alcohols ; pharmacology ; Ginger ; chemistry ; Lectins ; toxicity ; Macrophages ; drug effects ; metabolism ; Male ; Mice ; Mice, Inbred ICR ; Pinellia ; chemistry ; toxicity ; Reactive Oxygen Species ; metabolism ; Receptor-Interacting Protein Serine-Threonine Kinases ; genetics ; metabolism ; Tumor Necrosis Factor-alpha ; genetics ; metabolism

Cyclic lipopeptide, also named as acylpeptide, which was characteristic with novel structures, was paid more attention in the recent years. Cyclic lipopeptide showed various bioactivities including antibacterial, anti-tumor, anti-inflammatory, etc. Cyclic lipopeptide originated mainly from the second metabolites of microorganism, such as Cyanobacterium, Bacterium, Actinomyces, etc. The bacteria included the genus of Bacillus and Pseudomonas. In this account, the review has been made on the development of cyclic lipopeptide.
Anti-Bacterial Agents ; pharmacology ; Antibiotics, Antineoplastic ; pharmacology ; Bacillus ; chemistry ; Cyanobacteria ; chemistry ; Daptomycin ; isolation & purification ; pharmacology ; Humans ; Lipopeptides ; chemistry ; isolation & purification ; pharmacology ; Peptides, Cyclic ; chemistry ; isolation & purification ; pharmacology ; Pseudomonas ; chemistry

OBJECTIVETo investigate the methylation Oct4 in orientation induced differentiation in bone marrow mesenchymal stem cells

METHODSMice BMSCs were isolated and purified from bone marrow by adherent culture,and then identified by morphology and immunocytochemistry.Mouse osteoblastic cells were cultured by bone fragments inoculation,and then identified by alkaline phosphatase(AKP)staining and alizarin red staining.BMSCs were induced to differentiate into osteoblasts in vitro. Indirect immunofluorescence staining and reverse transcription polymerase chain reaction(RT PCR)were used to detect the expressions of Oct4 in BMSCs before and after induction.The methylation status of Oct4 gene in mouse BMSCs was explored by a methylation specific PCR before and after induction

RESULTSThe isolated mice BMSCs massively proliferated in vitro and formed cell colones with uniform morphology.Positive expressions of CD29,cKit,and CD44 and negative expression of CD34 were found in the isolated cells.After 10 days[DK]'[DK] induction,both AKP and the alizarin red were positive in cells and osteoblastic cells isolated from mice skull bones.The indirect immunoinfluorescence staining and RT-PCR also showed that the Oct4 expression in the directed differentiation of mouse BMSCs was down-regulated.The CpG island of Otc4 gene promoter in mouse BMSCs became methylated during the induced differentiation.

CONCLUSIONSMice BMSCs and osteoblasts were successfully cultured in vitro in this studyOct4 may be involved in the maintenance of adult stem cell pluripotency.The down regulated expression of Oct4 gene in mouse BMSCs during the directed differentiation may contribute to the methylation of CpG island in Otc4 gene promoter.

Animals ; Bone Marrow Cells ; cytology ; Cell Differentiation ; Cells, Cultured ; CpG Islands ; DNA Methylation ; Mesenchymal Stromal Cells ; cytology ; Mice ; Octamer Transcription Factor-3 ; metabolism ; Osteoblasts ; cytology ; Promoter Regions, Genetic

OBJECTIVETo investigate the association between catecholamine-beta-adrenoceptor (beta-AR)-adenosine 3', 5'-monophosphate (cAMP) system and long-term prognosis in patients with chronic heart failure (CHF).

METHODSThe study population comprised 73 patients with CHF (EF: 23% +/- 10%) with a mean follow-up of 3.8 +/- 1.9 years. Plasma levels of norepinephrine (NE) were measured using high performance lipid chromatography, beta-adrenergic receptor density (Bmax) and the content of cAMP in peripheral lymphocytes were calculated using 3H-dihydroalpneolo as ligand and competitive immunoassay, respectively. Deaths due to cardiovascular events within the follow-up period were registered.

RESULTSThe total mortality was 64.7%, 57.4% of which was for cardiogenic (worsening heart failure: 32.4%; sudden death: 25.0%). In the cardiogenic death group, plasma levels of NE and epinephrine (E) (3.74 nmol/L +/- 0.09 nmol/L and 3.17 nmol/L +/- 1.0 nmol/L) and the contents of peripheral lymphocyte cAMP (3.64 pmol/mg protein +/- 1.4 pmol/mg protein) were significantly increased as compared with the survival group (2.68 nmol/L +/- 0.07 nmol/L, 2.41 nmol/L +/- 0.24 nmol/L and 2.73 pmol/mg protein +/- 0.9 pmol/mg protein, respectively, all P < 0.01). In the sudden death group, plasma levels of NE and E (5.01 nmol/L +/- 0.06 nmol/L and 4.13 nmol/L +/- 0.08 nmol/L) were significantly increased as compared with the worsening heart failure group (2.49 nmol/L +/- 0.07 nmol/L and 2.33 nmol/L +/- 0.8 nmol/L, all P < 0.001) and to the survival group (2.68 nmol/L +/- 0.07 nmol/L and 2.41 nmol/L +/- 0.14 nmol/L, all P < 0.01). The incidences of sudden death were 0%, 75%, and 100% (chi(2) = 16.018, P < 0.01) in patients with plasma NE < 2.5 nmol/L, NE 2.5 nmol/L - 4.5 nmol/L, and NE > 4.5 nmol/L, respectively. In the worsening heart failure group, the content of peripheral lymphocyte cAMP (4.46 pmol/mg protein +/- 0.18 pmol/mg protein) was significantly increased compared with the sudden death group (2.39 pmol/mg protein +/- 0.9 pmol/mg protein, P < 0.001) and to the survival group (2.73 pmol/mg protein +/- 1.1 pmol/mg protein, P < 0.001). The worsening heart failure death occurences were 5.0%, 72.2%, and 100% (chi(2) = 14.26, P < 0.01) in patients with a content of peripheral lymphocyte cAMP < 2.5 nmol/L, cAMP 2.5 nmol/L - 4.5 nmol/L, and cAMP > 4.5 nmol/L, respectively. Bmax in peripheral lymphocyte was not significantly different (P > 0.05) among the sudden death, worsening heart failure, and survival groups in CHF patients.

CONCLUSIONSPlasma levels of catecholamine increase significantly, and Bmax and the contents of cAMP in peripheral lymphocytes decrease significantly in patients with CHF. High plasma catecholamine levels may be associated with sudden death, and high intralymphocyte cAMP content may be associated with worsening heart failure in CHF patients.

Adult ; Aged ; Catecholamines ; blood ; Cyclic AMP ; blood ; Death, Sudden, Cardiac ; Female ; Heart Failure ; blood ; mortality ; Humans ; Lymphocytes ; chemistry ; Male ; Middle Aged ; Receptors, Adrenergic, beta ; blood