Streptococcus pneumoniae is one of the most common causes of respiratory tract infections in children, and also the major pathogen leading to severe pneumonia, complications and even death. In recent years, antimicrobial resistance of streptococcus pneumoniae is growing and widespread, resulting in the increasing burden of disease,and also bring serious challenges to clinical diagnosis and treatment. The emergence and dissemination of vaccines against Streptococcus pneumoniae in disease prevention and control has a bright future.

Objective To investigate the mechanism of Thapsigargin in the proliferation of SW480 and provide experimental basis for development of anti-signaling therapy for patients with colon cancer by detection of intracellular calcium concentration in Thapsigargininduced human colon cell line SW480,.Methods Level of[Ca2+]was measured by fluorescence measurement with fura-2/AM,a fluorescent index of calcium.The suppression rate of SW480 cells was calculated by MTY assay.Results Thapsigargin promoted the levels of [Ca2+]from(133.26±5.17,197.46±4.62)to(436.63±5.21,766.41±3.12),and increased the suppression rate from(10.67±5.28)to(31.46±7.21).When W7 Was combined used with Thapsigargin,no significant changes were found in the levels of[Ca2+]and increment of the suppression rate.Condusion Thapsigargin might promote the proliferation of SW480 cells and lead to apoptosis.but the signaling pathway still remain to he studied.

Objective:To evaluae the unification of endoplasmic reticulum and mitochondrium in fetal rat cerebral neuron apoptosis induced by intrauterine distress. Methods:Fetal rat intrauterine distress model was established. The samples were randomly divided into normal group and ischemia-reperfusion group(IR). Expression of GRP78,caspase-9,caspase-12,and cytoron C protein were detected by western blot technique. Results:The expression of GRP78 on corresponding time in IR group was significantly higher than that in normal group. And it reached the maximum at 3h of reperfusion. The expression of GRP78 reduced step by step as reperfusion time extended. The expression of caspase-9 and caspase-12 at corresponding time in IR group were significantly higher than those in normal group. Their expression increased rapidly and reached the maximum at 12h of reperfusion. The expression of cytoron C in kytoplasm at corresponding time in IR group was significantly higher than that in normal group and reached the maximum at 12h of reperfusion. Conclusion:The synergistic effect of endoplasmic reticulum and mitochondrium plays an important role in fetal rat cerebral neuron apoptosis induced by intrauterine distress.

Humans ; Occupational Health ; Protective Devices

In the process of the information literacy education, teachers, students and the society often have the conflict goals.Unity of purpose-based medical infornation literacy education research and emphasis on the decomposition of the different targets mean to extract the most important core object, so as to achieve social goals, teaching objectives and students target the greatest degree of uniformity, to achieve the maximization of the function of the information literacy education.

Pertussis or whooping cough is an acute infectious disease of the respiratory system,which is mainly caused by Bordetella pertussis and Bordetella parapertussis. It can occur at any age,but is most serious in young infants. Despite widespread use of vaccination, pertussis has not been eliminated. On the contrary, increased incidence rates have been reported worldwide during the last two decades,also called reemergence of pertussis. So it is necessary to evaluate current state on pertussis research,in order to better provide basis for mo-nitoring and control pertussis. This paper reviews the pertussis epidemiological changes and the related cause analysis and immunization strategy.

Objective: Our aim was to investigate the relationship between tumor doubling time (TD) and the prognosis of patients with lung cancer.Methods:According to the diameter of tumor or its shadow,the TD of tumor was calculated and postoperative survival time (PST) were predicted based on the Geddes' nomogram.The statistic analysis was performed after comparison with the actual survival time (AST).Results:There was no significant difference of TD among tumors of different histological types (P>0.05).The accumulated survival in patients with TD>100 days was higher than those with TD<100 days, with a significant difference (P<0.05).The AST in patients underwent surgery was markedly higher than the PST,indicating that the operation was effective.Conclusion:Tumor TD may be a valuable parameter for evaluating the prognosis and surgical treatment in patients with lung cancer.

OBJECTIVE:To establish a method for the determination of related substances in Levo-cetirizine hydrochloride chewable tablet. METHODS:RP-HPLC was performed on the column of Venusil XBP-CN with mobile phase of acetonitrile-0.05 mol/L Sodium dihydrogen phosphate solution(pH value adjusted to 3.0 by phosphoric acid)(60∶40,V/V)at a flow rate of 1.0 ml/min, the detection wavelength was 230 nm,column temperature was 25 ℃,and volume injection was 20 μl. RESULTS:Levo-cetirizine hydrochloride chewable tablet showed good separation with related substances;the linear range of levo-cetirizine hydrochloride was 1.2-2.8 μg/ml(r=0.999 9);the quantification limit and detection limit was 1.4 ng/ml and 0.3 ng/ml,respectively;RSDs of preci-sion,stability and reproducibility tests were lower than 1%;recovery was 96.3%-105.0%(RSD=1.7%,n=9);the contents of re-lated substances were no more than 0.17%. CONCLUSIONS:The method is simple,sensitive,reproducible,accurate and reli-able,and can be used for the determination of related substances in Levo-cetirizine hydrochloride chewable tablet.

Objective To observe the effect of aerosol inhalation of ambroxol combined with budesonide on neonatal pneumonia .Methods 66 infants with pneumonia treated were enrolled in this study.The patients were divided into observation group ( n =33 ) and control group ( n =33 ) according to the random number method.The treatment group were treated with ambroxol combined with budesonide and the control group were treated with budesonide.The two groups of infant lung function, clinical outcomes and blood flow were compared.Results The total effective rate (93.94%) in the observation group was significantly higher than that in the control group (45.45%), there was significant difference between the two groups (P<0.05).After treatment, FEV1 and PEF in the two groups were significantly higher than those before treatment, the observation group [(95.21 ± 7.69)%, (93.21 ±7.89)%] were significantly higher than those of the control group[(87.03 ±7.23)%, (84.55 ±7.45)%], the differences between the two groups were statistically significant (P<0.05).The OI of the two groups was significantly higher than that of the control group and the OI of the observation group was significantly higher than that of the control group.PaCO2 of the two groups decreased significantly and the PaCO2 of the observation group was significantly lower than that of the control group, the difference was statistically significant ( P<0.05 ).Conclusion The combination of ambroxol and budesonide is effective in the treatment of neonatal pneumonia.It can effectively improve the infant pulmonary function, shorten the treatment time and improve the hemodynamics of infants .