The rapid development of the society brings modern university students opportunities to catch,and impacts at the same time.The political advisors keep close relations with university students,so how to improve their own quality and better their work is an unavoidable issue.

Objective To review the clinical feature of Nocardia-positive patients and improve the awareness of Nocardia infection.Methods The clinical data were reviewed retrospectively for 11 patients from whom Nocardia was isolated during the period from May 2012 to December 2014 in the General Hospital of Ningxia Medical University.Results Contamination was suspected in 2 of the 11 cases.Nocardia infection was considered in the remaining 9 cases,including pulmonary infection in 6 cases,skin and soft tissue infection in 2 cases,peritoneal dialysis-related peritonitis in 1 case.Underlying diseases were documented in all the 9 patients,4 of which received corticosteroids or immunosuppressants for their underlying diseases.Conclusions Nocardia may cause infection in different body sites,especially lungs.The patients with underlying diseases,especially those receiving corticosteroids or immunosuppressants,are relatively more susceptible to Nocardia infections.

The respiratory cilia of normal and abnormal regions in 20 patients with lung cancer or tuberculosis were observed under electron microscope.The results show that the 9?2+2 microtubules arrangement was seen in cross section of the cilium. Ultrastructure of the cilia is about the same as that of other mammalian ceils. However,a very interesting finding was that the ciliary rootlets became greatly hypertrophied.Thus,the structure was easily identified.It appeared as striated muscles. Therefore we propose a new idea that is quite different from Satir's hypothesis about the mechanism of ciliary movement.We think that ciliary rootlets may generate movement rather than fix cilia.Dynein arms and radial spoke may be involved in supporting and fixing for ciliary movement.

Oxidative stress can achieve the purpose of tumor therapy by accelerating the death of tumor cells.As a major molecule generated from the body's oxidative stress reaction,reactive oxygen species(ROS)exerts the antitumor efforts by promoting apoptosis,necrosis and autophagy.The drugs which could increase the level of ROS in cells have received more and more people's attention,and this provide a new research direction for the clinical treatment of tumors.

OBJECTIVE: To investigate the effect of genistein on cell proliferation and apoptosis in human laryngeal carcinoma cell line Hep-2. METHOD: Cell Counting Kit-8 (CCK-8) assay was used to measure the 50% inhibiting concentration (IC50) value of genistein; cell apoptosis rate and the distribution changes of cell cycle were determined with flow cytometry assay after treatment by gensitein. The morphological changes of tumor cells were evaluated by inverted phase contrast mircroscopy. RESULT: The IC50 of geniste responses to Hep-2 cells for 24 h was 23.64 µg/ml. The apoptotic rates of Hep-2 cells treated by genistein for 24 h were 22.40% ± 1. 65% (at 12 µg/ml genistein) and 30.64% ± 2.94% (at 24 µg/ml genistein) respectively, significantly statistical differences were foundbetween above threated groups and the control group (P < 0.05); the apoptotic rates of Hep-2 cells treated by genistein for 48 h were 30.55% ± 0.72%(at 12 µg/ml genistein) and 48.69% ± 1.06% (at 24 µg/ml genistein) respectively, significantly statistical differences were found between above threated groups and the control group (P < 0.05). When Hep-2 cells exposed to the same concentration of genistein for 24 h, 48 h respectively, the difference in apoptotic rate was statistically significant. CONCLUSION Genistein inhibited Hep-2 cells growth obviously, meanwhile it could induced apoptosis of Hep-2 cells, the apoptotic rate was increasing with the increase of the time and dose of genistein.
Apoptosis ; Cell Cycle ; Cell Line, Tumor ; drug effects ; Cell Proliferation ; Flow Cytometry ; Genistein ; pharmacology ; Humans ; Laryngeal Neoplasms ; pathology

Objective To assess the influence of subglottic secretion drainage(SSD)on the prevention of ventilator associated pneumonia(VAP).Methods 63 patients in the intensive care unit(ICU)who received mechanical ventilation above 48 hours were divided into two groups named group A(31 cases)and group B(32 cases).Group A received SSD 1 time per 6 hours while group B only got SSD at 48 hours,the 4th,7th and 14th days when samples were got.We brushed away secretion from airway and also monitored bacteriology of the subglottic secretion between the two groups. Results The incidence rate of VAP in group A was 6.1%and was evidently lower than that of group B(P<0.05),which was 31.3%within 1 week.But 1 week later the incidence rate of VAP in the two groups was not statistically difierent(P>0.05).The onset time of VAP was later anti the bacteria number in the subglottic secretion was less in group A than those in group B(P<0.01).The same bacteria strain was found in the subglottic secretion and airway secretions in 13 patients out of 22 VAP patients.The dominant bacteria were P.aeruginosa,K.pneumonia,Staphylococcus aureus and Pseudomonas stenotrophomonas. Conclusion SSD could reduce the bacteria concentration in subglottic secretion,decrease VAP incidence and delay the onset of VAP.Migration of dominant bacteria from the subglottic secretion was one of the important causes of VAP.

Aminopeptidase N,a zinc-dependent exopeptidase,is highly expressed in many kinds of tumors,which involves in the degradation of extracellular matrix barriers and angiogenesis and promotes the invasion and metastasis of cancer cells.Aminopeptidase N inhibitors can induce apoptosis and inhibit the invasion and metastasis of tumor cells,which has become an attractive target for anti-tumor therapy.

Objective:To establish the quality standard for Shule granules. Methods:By TLC, Angelic asinensis, Panax pseudog-inseng, Fructus liquidam-baris and Leonurus in Shule granules were qualitatively identified;and contents of notoginsenoside R1 and gin-senosides Rg1 in Shule granules were quantitatively determined by HPLC. Results: In the qualitative identification, the clear spots showed good resolution and specificity. The content of notoginsenoside R1 and ginsenosides Rg1 , two main ingredients in Shule gran-ules, was 0. 166 6 and 0. 681 8 mg·g-1 , respectively. Conclusion:The TLC and HPLC-UV determination method is simple, accu-rate and reproducible, and can be used as the quality control method for Shule granules.

OBJECTIVETo investigate whether the genistein can increase the radiosensitizing effect on laryngeal squamous carcinoma Hep-2 cells.METHODS Hep-2 cells were treated with genistein, radiation, and genistein plus radiation respectively. DMSO was used as the control group. EdU assay was performed to assess the short-term effect of genistein and (or) radiation on the proliferation of Hep-2 cells. Clonegenic assay was used to detect the survival rate of Hep-2 cells after treatment with radiation doses of 0, 2, 4, 6, 8 Gy and radiation combined with genistein. The data was fitted into the classic single-hit multi-target mathematical model to analyze the long-term effect on cell proliferation death of Hep-2 cells.RESULTSIt was observed that radiation combined with genistein could significantly inhibit the proliferation of Hep-2 cells. And the SER of 10μmol/L genistein was 1.412.CONCLUTIONGenistein can inhibit the proliferation of Hep-2 cells by DNA synthesis inhibition, and can be an adjunct agent of radiotherapy.

Objective To explore the Caprini risk assessment model for the application of the prevention of VTE in clinical nursing. Methods With a cross:sectional survey research, 6 624 patients were interviewed of a hospital from March to June in 2015.The Caprini risk assessment model was used to screen patients with VTE risk assessment. Results Patients have VTE risk in 6 229 cases, accounting for 94.04%. The patients of low risk, moderate risk, high risk, and super high-risk was 1 889 cases, 1 507 cases, 1 930 cases, 903 cases, accounted for 28.52%, 22.75%, 29.14%and 13.64%respectively. Surgical patients with VTE risk, low risk, moderate, high risk and super high-risk rate was 5.15% (79/1 533), 15.72%(241/1 533), 28.77%(441/1 533), 30.59%(469/1 533), 19.77%(303/1 533), the no-surgery group were 6.21% (316/5 091), 32.37% (1 648/5 091), 20.94% (1 066/5 091), 28.68% (1 461/5 091), 11.79%(600/5 091), two groups compare was statistically significant (χ2= 53.46, P = 0.000); High-risk ratio of trauma surgery,thoracic surgery, neurosurgery, orthopedics, mammary gland and thyroid surgery were63.2%、62.9%、61.5%、58.3%、55.8%; High-risk ratio of oncology medical, respiratory medical, neurology medical, cardiology medical were 92.0% , 68.2% , 55.9% and 64.4% . Conclusions Hospitalized patients have high risk of VTE, it is suggested that include VTE in nursing quality evaluation standard, establish an effective system of VTE risk management. Caprini risk assessment model has been clear about the VTE patients should be special attention, and has been great significance to early screening and prevention of VTE.