A new isoflavone derivative from Rosa Damascena and its antibacterial activity / 中国中药杂志

A new isoflavone derivative was isolated from Rosa damascena by using various chromatographic techniques including silica gel, Sephadex LH-20, and preparative RP-HPLC separation. Its structure was identified as 4'-hydroxy-7-(3-hydroxypropanoyl)-6-methoxy-isoflavone using combined examinations of their UV, IR, MS, and NMR spectroscopic data. Biological activity test showed that this compound showed prominent antibacterial activity with MIC₉₀ value of (46±4) mg·L⁻¹ for methicillin resistant Staphylococcus aureus(MRSA) strain. This value is close to that of levofloxacin [with MIC₉₀ value (53±5) mg·L⁻¹].

Determination of Strychnine and Brucine in Strychnos Nux-vomica Linn by SPME-HPLC / 中国药师

Objective:To establish a SPME-HPLC method for the determination of strychnine and brucine in Stryehnos nux-vomiea Linn. Methods:A novel capillary microtube monolithic column coupled with HPLC was prepared for the selective solid-phase microextraction of strychnine and brucine in Stryehnos nux-vomiea Linn. A Hypersil ODS column(150 mm × 4. 6 mm, 5 μm)was used and the mobile phase was acetonitrile- 0. 01 mol·L -1 sodium heptanesulfonate mixed with the same quantity of 0. 02 mol · L -1 potassium dihydrogen phosphate(adjusting pH to 2. 8 with 10% phosphoric acid)(21 ∶79). The detection wavelength was 260 nm,the sample size was 20 μl,and the column temperature was 25℃ . Results:The linear range of strychnine was 1. 2-90. 0μg·ml -1(r = 0. 999 8)and that of brucine was 1. 0-75. 0μg·ml -1(r = 0. 999 6). The average recovery was 100. 05%(RSD = 0. 58% ,n = 6)for strychnine and 99. 98%(RSD = 0. 27% ,n = 6)for brucine. Conclusion:The method is accurate and highly efficient,which can be used for the determination of strychnine and brucine in Stryehnos nux-vomiea Linn.

Study on the professional assessment standards of clinical pharmacy / 中华医学教育探索杂志

Professional assessment in Chinese Higher Education has made great progress in three stages: the sporadic practice, trial and promotion. The authors present several comments on the characteristics and the professional assessment standards of clinical pharmacy in China, and focus on the scientific system of professional assessment.

The drug sensitivity of human lung adenocarcinoma stem cells to cisplatin and carboplatin / 肿瘤

Objective:To analyze the drug sensitivity of human lung adenocarcinoma stem cells (LASC) to cisplatin (DDP) and carboplatin (CBP). Methods:Human lung adenocarcinomaic cells SPC-A1,AG,and CPA-Y2 were treated with DDP and CBP. The cell viability of cells was detected by CCK-8 assay. The phenotypic characteristics of drug surviving cells(DSCs)were determined by immunofluorescence staining. The LASC population was then separated by magnetic-activated cell sorting method. The LASC in DSCs was traced by using green fluorescence protein (GFP). The drug sensitivity of DSCs to DDP and CBP was analyzed.Results:The LASC exhibited the phenotypes of bronchioalveolar stem cells (BASC, OCT4~+CCSP~+SP-C~+). After mixture of CD221~+LASC with CD221~-lung adenocarcinoma differentiated cells, the DSC population showed OCT4~+BASC phenotypes. These DSCs were significantly resistant to DDP and CBP.Conclusion:LASC has a high resistance to DDP and CBP. This may be the reason for tumor recurrence after chemotherapy.

Protective effect of Na2SeO3 against cerebral ischemia-reperfusion injury to the hippocampal neurons in rats / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate the protective effects of selenium on rat hippocampal neurons against ischemia-reperfusion (IR) injury.</p><p><b>METHODS</b>Thirty-two rats were randomly divided into sham-operated group, IR group and selenium-treated group, and in the latter two groups, cerebral IR injury was induced by middle cerebral artery occlusion; Na2SeO3 treatment was administer in selenium-treated group. At 14 days after reperfusion, the brain tissues were harvested from the rats and hippocampal neuron injuries were observed by TUNEL and Methylene Blue staining. The levels of tumor necrosis factor-α (TNF-α), interleukin-1β (IL-1β) and nerve growth factor (NGF) in the hippocampal tissues were measured by ELISA.</p><p><b>RESULTS</b>Compared with IR group, the rats in selenium-treated group showed no significant increase in the expression of m-NGF (P>0.05), but pro-NGF expression was significantly increased (P<0.05) in the hippocampal tissue. Na2SeO3 treatment significantly inhibited the expressions of TNF-α and IL-1β and decreased the apoptosis of hippocampal neurons following cerebral IR injury (P<0.05).</p><p><b>CONCLUSION</b>Selenium produces antiapoptotic effect to protect the hippocampal neurons following cerebral IR injury possibly not by increasing the level of m-NGF but by decreasing the expressions of the inflammatory factors.</p>

Analysis of personality traits on felons / 法医学杂志

OBJECTIVE@#To study the personality traits of felons and their relevant factors, and to recommend for criminal psychological correction and crime prevention.@*METHODS@#Using Minnesota Multiphasic Personality Inventory (MMPI) to test felons in initial and middle stage of sentence serving.@*RESULTS@#The differences of MMPI factors between felon group and normal group were statistically significant (P < 0.001). The felon group's raw scores in F, Pd, Pa, Pt and Sc factors were significantly higher than those of the normal group. The felons whose T score of Pd was higher than that of the normal group by one standard deviation had the largest proportion. In subscales of F, Hs, D, Hy, Pd, Pa, Pt, Sc and Ma, the proportion of people whose T score higher than the normal was relatively large. The supernormal proportion in the two-point code type was large.@*CONCLUSION@#Felon group is a special group with high-risk personality disorder. It is important to take more correctional research on them.

Protective effect of propofol against intracerebral hemorrhage injury in rats / 药学学报

The neuroprotective effect of propofol against intracerebral hemorrhage (ICH) in rats was investigated. ICH was induced in rats by infusion of collagenase (Type VII) 0.5 U (1 U x microL(-1)) into the left caudate nucleus. Three doses of propofol were given intraperitoneally (i.p.) 10 min before collagenase infusion. Effects of propofol on neurological behavioral scores, brain water content (BWC), activity of superoxide dismutase (SOD) and content of malondialdehyde (MDA) in brain tissue, expression level of caspase-3 were studied. In propofol groups (30 and 100 mg x kg(-1)), the neurological behavioral score, BWC and the content of MDA were significantly lower than those in ICH group (P < 0.05, P < 0.01), whereas the activity of SOD was higher than that in ICH group (P < 0.05). Meanwhile, propofol (15, 30, and 100 mg x kg(-1)) inhibited caspase-3 expression in dose-dependent manner (r = 0.877). Brain damages caused by ICH in rats can be alleviated by propofol, which mechanism might be attributed to its antioxidant activity.

Lung adenocarcinoma stem cell phenotypes and their correlation with patient prognosis / 中华肿瘤杂志

<p><b>OBJECTIVE</b>To detect the cancer stem cells and to evaluate their prognostic implication in patients with lung adenocarcinoma.</p><p><b>METHODS</b>Three phenotypic markers of cancer stem cells (SP-C, CCSP and OCT4) in lung adenocarcinoma were detected by immunofluorecence staining. The correlation among the clinicopathological parameters and phenotypes of cancer stem cells as well as survival were analyzed by Cox proportional hazard method.</p><p><b>RESULTS</b>Of the 57 cases, cancer stem cells were detected in 52, including OCT4(+) bronchioloalveolar stem cell (BASC) phenotype (SP-C(+) CCSP(+) OCT4(+)) in 40 cases and OCT4(-) BASC phenotype (SP-C(+) CCSP(+) OCT4(-)) in 12 cases. Statistical analysis revealed that the phenotype of cancer stem cells was related with the cellular differentiation, i.e. the OCT4(+) BASC phenotype occurred more frequently in the well-differentiated tumors, while the OCT4(-) BASC phenotype usually presented in most of the poorly-differentiated ones. Cox analysis showed that the OCT4(+) BASC phenotype was one of prognostic factors.</p><p><b>CONCLUSION</b>The lung adenocarcinoma stem cells have phenotypic features of bronchioalveolar stem cells (SP-C(+) CCSP(+)). The expression of self-renewal regulatory gene OCT4 in these cells indicates an aggressive nature and unfavorable prognosis.</p>

The sphere formation and tumorigenesis of lung cancer stem cells / 肿瘤

Objective: To induce the sphere formation from human lung adenocarcinoma cell line SPC-A1, identify cancer stem cells among the spheres, and evaluate their tumorigenic potential. Methods: The spheres were induced by incubation of cancer cells in the serum-free medium. The sphere formation was induced by epidermal growth factor (EGF), insulin-like growth factor-1 (IGF-1), and fibroblast growth factor-10 (FGF-10). The stem cell-related markers were measured by RT-PCR and immunofluorescent staining in the resultant sphere-forming cells. Their tumorigenesis was tested in NOD/SCID mice. Results: The float-growing spheres (named pulmospheres) were developed after SPC-A1 cells were cultured for 5-10 days. RT-PCR demonstrated that the pulmospheres expressed the lung cancer stem cell surface markers (CD24 and CD221), the bronchioalveolar stem cell markers [surfactant proteins C (SP-C) and Clara cell secretory protein (CCSP)], the embryonic stem cell stemness genes (OCT4, Nanog, and Bmi-1), and the lung stem cell stemness gene (TTF-1). Among these markers, the expressions of SP-C, CCSP, and OCT4 were further evaluated with the immunofluorescent staining. Approximately 80 % of the sphere cells were shown to be positive for the proteins. The pulmosphere cells were highly tumorigenic in NOD-SCID mice, with tumor development after implantation of 5 × 103 cells per mouse. Conclusion: The lung cancer stem cells are enriched in the pulmosphere-forming cell population, which are tumorigenic.

Development of operation patient security detection system / 中国医疗器械杂志

This paper describes a patient security detection system developed with two dimensional bar codes, wireless communication and removal storage technique. Based on the system, nurses and correlative personnel check code wait operation patient to prevent the defaults. The tests show the system is effective. Its objectivity and currency are more scientific and sophisticated than current traditional method in domestic hospital.

Protective effect of penehyclidine hydrochloride in cerebral ischemia-reperfusion injury rats / 中华急诊医学杂志

Objective To investigate the effect of a selective muscarinic receptor antagonist (penehyclidine hydrochloride) in three vessel occlusion model of acute global cerebral ischemia-reperfusion in rats.Method One hundred and forty-four male SD rats were randomly divided into four groups:sham operated group,vehicle treated group (saline 1 ml,i.p.),scopolamine treated group (0.01 mg/kg,i.p.) and penehyclidine hydrochloride treated group (0.01 mg/kg,i.p.) with drugs injected 40 minutes before ischemia respectively.The ischemic duration was 10 minutes.The animals were subjected to motor activity tests (open field activity test,beam-walking test and grip test) at 24 hours or on the 3rd and 7th day after reperfusion.HE staining,TUNEL staining and immunohistochemical reactions of bax and bel-2 were carried out at the time points of 2,12,24 hours,3 and 7 days after reperfusion.TTC staining was carried out in some rats for assessment of infarction volume on the 4th day after reperfusion.Results As compared with the vehicle treated group,both penehyclidine hydrochloride treatment and scopolamine treatment decreased the numbers of apeptotie neurons (P

Observation and research on the electroporation of S-180 cell induced by electric pulse / 生物医学工程学杂志

This is our first time report of S-180 cell handled with various voltages, capacity and pulse number. Many pores on the S-180 cell membrane can be observed under scanning electron microscope. By the stains of trypan blue, we have known the influence of electric parameters on the ratio of poration. The results show that the ratio of electroporation has positive correlation with the voltages and the pulse number while negative correlation with the capacity.

Inhibitory effect of electrochemotherapy on S180 tumor growth and angiogenesis and the possible mechanism / 生物医学工程学杂志

This study evaluated the effects of electric pulses combined with antitumor drugs on S180 tumor cells. It was found that the growth of S180 sarcoma was inhibited with a maximum inhibition ratio of 95.5% after the use of electric pulses in combination with the injection of bleomycin (BLM), and the blood vessels of tumor were obviously fewer than those of the untreated tumor in vivo. The mitochondria of S180 tumor cells were swollen after the use of electric pulses in combination with adriamycin. The results showed that electrochemotherapy has evident inhibitory effect on the growth of S180 sarcoma and the mechanism may involve the suppression of tumor angiogenesis and changes in the ultrastructures of tumor cells.

Applications of ultrasound in the treatment of the complications of breast augmentation with polyacrylamide hydrogel injection / 中华整形外科杂志

<p><b>OBJECTIVE</b>To search for a simple and non-invasive method to assist the treatment of the complications of breast augmentation with polyacrylamide hydrogel injection.</p><p><b>METHODS</b>High-frequency ultrasound was used to examine the breast and observe the distributions of the injected polyacrylamide hydrogel. The operation procedure was predetermined according to the ultrasound information. The ultrasound results were compared with what was seen during the operation.</p><p><b>RESULTS</b>40 patients (80 breasts) were examined. The ultrasound results were coincident with the outcomes of surgery. The results of postoperative follow-up were coincident with the predicted.</p><p><b>CONCLUSION</b>Ultrasound is an accurate method for examining the augmented breast with polyacrylamide hydrogel injection. It is helpful in predetermining the operation procedure, predicting postoperative results.</p>