Objective To investigate the effects of the levels of inflammatory cytokines on children with bronchial pneumonia ceftriaxone.Methods 85 cases of children with bronchial pneumonia were randomly divided into observation group (n =43) and control group (n =42).Two groups were treated on the basis of penicillin (200 000U/kg,2 times/d),the observation group ceftriaxone (20mg/kg,1 times/d) treatment on the basis of the times,7d course of treatment.The clinical efficacy of two groups were compared.The levels of C-reactive protein (CRP),interleukin-6(IL-6) and tumor necrosis factor-α(TNF-α) before and after treatment,1d,3d,5d,7d were analyzed.Results The total effective rate of observation group was 96.97％,the control group was 75.00％,the total efficiency of the two groups had significant difference (x2 =5.236,P =0.000).After treatment,fever,cough,wheezing,rales symptom score decreased significantly compared with pre-treatment,post-treatment observation group political scores were significantly lower than those of the control group,the difference was statistically significant (t =3.425,3.622,3.712,3.812,P ＜ 0.05).The levels of C RP (4.28 ± 1.07) mmol/L,IL-6 (7.21 ± 2.07) mmol/L,TNF-α(15.36 ± 3.78) mmol/L of observation group after treatment were significantly lower than those of before treatment and control groups at the same time,while the control group after treatment 5d CRP,IL-6,TNF-α levels lower than before treatment,the difference was statistically significance (P ＜ 0.05).Conclusion Ceftriaxone can effectively relieve symptoms of pneumonia in children,quickly reduce the levels of inflammatory factors,improve clinical outcomes in children.

Background and purpose:Osteosarcoma, a highly malignant bone tumor, develops rapidly. The current medicines for osteosarcoma present some limitations with serious side effects of long-term use. Isosteviol has the structure of tetracyclic diterpene which is the starting material of many anti-cancer drugs. However, its anti-tumor activity has been rarely reported. This study investigated the effect of isosteviol on proliferation of human osteosarcoma cell line U-2OS.Methods:The effect of isosteviol on U-2OS cell proliferation was assayed by MTT method. Cellular morphologic changes were observed under an inverted phase contrast microscope. The cell condition was observed with Hoechst 33342 and PI staining. Generation of reactive oxygen species and cell membrane potential were detected as well. The cell cycles were analyzed with lfow cytometry. The expressions of apoptosis-related proteins Bcl-2 and Bax were measured by Western blot assay.Results:The result indicates that isosteviol suppressed the growth of U-2OS cells in time- and concentration-dependent manner. Isosteviol could cause S phase cell cycle arrest at 24 h and apoptosis at 48 h. With the increased drug concentration, reactive oxygen species increased significantly, and the membrane potential gradually reduced. In addition, isosteviol treatment enhanced the expression of Bax but reduced that of Bcl-2.Conclusion:The inhibition of isosteviol on cell growth of U-2OS cells was possibly caused by promoting apoptosis through regulating the apoptosis-related protein expressions, such as the enhancement of Bax and reduction of Bcl-2 expression.

Objective To observe the effect of chronic variable stress on the forced swimming test of rats,and investigate its preliminary mechanism.Methods First a mark was given to each Wistar rat by forced swimming test.12 Wistar rats which had similar scores were selected and divided into control group and model group averagely.The behavior changes of rats were induced in the forced swimming test by chronic stress and the plasma cortisol level was analyzed through radioimmunoassay(RIA) methods.The changes of hippocampus CA3 structure were observed with microscope.Results Compared with control group,chronic variable stress increased immobility time,reduced climbing time evidently and enhanced the weight of adrenal gland and the level of plasma cortisol(P

Objective To study the effects of an extended-interval dosing regimen of gonadotropin releasing hormone agonist(GnRH-a) in the treatment of adenomyosis. Methods 20 patients with adenomyosis who asked for medicine treatment were divided into two groups randomly(n=10). The patients in the study group were given four doses of triptorelin depot 3. 75mg every 6 weeks in a new extended-interval dosing regimen. The other patients in the control group were given triptorelin 3.75mg in the conventional depot regimen of six doses,each given 4 weeks apart. The changes of degree of dysmenorrhea and the uterine volume were investigated. And the level of sexual hormone was also detected both before and after therapy.Results After six months of therapy,the reliving rate of dysmenorrheal was 100% both in the new regimen and the conventional regimen. The uterine volume was reduced at 46.7 % and 47. 5 % . And the level of LH, FSH and E2 were decreased significantly(P 0.05).Conclusion The use of the extended-interval dosing regimen of triptorelin depot in adenomyosis results in a consistent hypoestrogenised state,which is similar to that achieved by the conventional regimen. The new regimen thus reduces the cost of treatment obviously.

Objective To investigate the clinical value of serum procalcitonin (PCT) in diagnosis of urinary tract infection(UTI) in elderly patients.Methods 114 elderly patients with UTI in the department of infectious diseases of a hospital from January 2013 to December 2014 were analyzed retrospectively, clinical data of patients with abnormal and normal serum PCT were compared, PCT levels in patients with positive and negative blood cultures were compared, PCT receiver operating characteristic (ROC) curve for the diagnosis of bacteremia were drawn.Results Among 114 elderly patients with UTI, 46 were with abnormal PCT, 68 were with normal PCT.In abnormal PCT group, the proportions of patients with highest body temperature within 24 hours of admission, white blood cell count, neutrophil granulocyte percentage, C-reactive protein (CRP), blood urea nitrogen(BUN), creatinine(Cr), and urinary tract obstructive disease were all higher than those with normal PCT (all P<0.05).Among 42 patients with blood culture, PCT level in positive blood culture group(n=12) was higher than negative blood culture group(n=30)(1.93 [0.57-8.32] μg/L vs 0.36[0.15-1.01]μg/L, P=0.028).The area under the ROC curve (AUC) of the patients with bacteremia diagnosed by PCT was 0.72(95%CI:0.54-0.90),at the optimal value of 0.52 g/L, sensitivity, specificity, positive predictive value, and negative predictive value were 83.3%, 63.3%, 47.6%, and 90.5% respectively.Conclusion Serum PCT level can well reflect the severity of elderly patients with UTI, and is of great value in early diagnosis of bacteremia in elderly patients with UTI.

Objective To evaluate mono-and bi-exponential decay models in the diagnosis of hepatocellular carcinoma (HCC). Methods 28 patients with HCC who underwent conventional MRI imaging and diffusion-weighted imaging were collected,and all the HCC lesions were proved by operation pathology.The ADC values in mono-exponential decay model and ADCst ,ADCslow , ADCfast and ffast of the lesions in bi-exponential decay model were measured through the reconstruction of ADCmap ,ADCslow map, ADCfast map and fraction of fast ADC at a workstation.The relationships between the ADC values with low,medium and high b-val-ues and different differentiation degrees of HCC were analyzed.Moreover,the relationships between the ADCst ,ADCslow ,ADCfast , ffast values and HCC defferentiation grades were also explored.Results Significant differences in ADC value were found among differ-ent degrees of HCC differentiation in middle and high b-value groups (P <0.05).A positive correlation was found between the ADC value and the degree of HCC differentiation in middle (r=0.377,P <0.01)and high b-value group (r =0.81 5,P <0.01).There were no significant differences in ADC value among the different degrees of HCC differentiation in low b-value group.There were significant differences in the values of ADCst ,ADCslow and ADCfast among different degrees of HCC differentiation.Significant posi-tive correlations were found between the values of ADCst ,ADCslow and ADCfast and the degree of differentiation (P <0.01).There were no significant differences in the values of ffast among different degrees of HCC differentiation.Conclusion ADC value in mono-exponential decay model plays a potential role in the diagnosis of different differentiation degree of HCC with a b value ≥400 s/mm2 .Furthermore,the parameters in bi-exponential decay model,especially the values of ADCst ,ADCslow and ADCfast ,can provide new and unique information in the distinction of different degrees of HCC differentiation.

Objective To study the expression levels of inducible costimulator (ICOS) on CD4+ T cells in peripheral blood in patients with chronic hepatitis B and its change after treated with interferon.Methods All 56 patients were divided into two groups (interferon group has 28 cases,lamivudine group has 28 cases),and interferon group treated by PEG-IFN-α 2a,lamivudine group treated by lamivudine,respectively.There were 20 healthy individuals as control group.The levels of ICOS on CD4+ T cells of patients with chronic hepatitis B were kinetically detected by flow cytometry.The copies of HBV DNA in sera were dynamically detected by real-time PCR.Results The levels of ICOS on CD4+ T cells in patients with chronic hepatitis B was higher than that of normal controls(P＜0.001 ).However,the expressions of ICOS on CD4+ T cells in patients could be deduced by PEG-IFN-α 2a and obviously decreased after treatment.There was significant difference between interferon group and lamivudine group (P＜0.05 in 24 weeks,and P＜0.01 in 48 weeks).After treatment,the change values of ICOS in interferon group was positively correlated with the change copies of HBV DNA (r =0.972,P＜0.001 ).However,the change values mentioned above that did not find correlation in lamivudine group(r=-0.101,P=0.608).Conclusion The study shows the patients with chronic hepatitis B have disordered in cellular immunity and increased with the expression of ICOS on CD4+ T cells.PEG-IFN-α 2a could decrease the expression of ICOS on CD4+ T cells in patients,and correct the Th2 type immune polarization to some extent,and that plays a positive role in antiHBV.

3-hydroxy-3-methylgulutaryl-coenzyme A (HMG-CoA) reductase inhibitors or statins are a kind of lipid-lowering agents and have been used for the prevention and treatment of cardiovascular diseases. Recent studies suggested that statins, besides lowering cholesterol, may protect vessels by enhancing the activity of endothelial nitric oxide synthase (eNOS). In the present study, we investigated if simvastatin increases eNOS activity through its phosphorylation in 293 cells (293-eNOS) with stable expression of eNOS. The results showed that incubation of 293-eNOS cells with simvastatin (10 microm/L) for 2 h significantly increased in the activity of eNOS as shown by the conversion of L-arginine to L-citrulline (2889.70+/-201.51 versus 5630.18+/-218.75 pmol/min . mg proteins) (P<0.01). Western blotting revealed that simvastatin increased phosphorylation of eNOS at 1177 (ser) and also 495 (thr) but did not affect the overall expression of eNOS or inducible NOS. Further study found that simvastatin raised phosphorylation levels of Akt and AMPK, and such effect could be antagonized by Akt inhibitor or AMPK inhibitor. These results suggest that simvastatin could stimulate the activity of eNOS via its phosphorylation by Akt and AMPK, which provides a new mechanism, other than lipid-lowering effect, for the cardiovascular protection of statins.
Cell Line ; Epithelial Cells/cytology ; Epithelial Cells/*enzymology ; Hydroxymethylglutaryl-CoA Reductase Inhibitors/*pharmacology ; Kidney/*cytology ; Nitric Oxide Synthase Type III/*metabolism ; Phosphorylation ; Simvastatin/*pharmacology

OBJECTIVE To analyze the resistant rates of Staphylococcus spp and Enterococcus spp isolated from clinical infections to antibiotics,and to provide reference method for effective control infections of Staphylococcus.METHODS The Staphylococcus spp and Enterococcus spp were identified with VITEK-32 automicrobiology system(AMS) and GPI card,drug resistance was detected with VITEK-32 AMS and GPS-107 card.Laboratory data were analyzed by WHONET-5 statistic software.RESULTS Among 1 445 Staphylococcus spp and Enterococcus spp strains isolated from clinical samples,330 strains(22.8%) were Staphylococcus aureus,872 strains(60.3%) were coagulase negative Staphylococcus,213 strains(14.7%) were Enterococcus faecalis,and 30 strains(2.1%) were E.faecium.From S.aureus 223 strains(67.6%) were MRSA,718 strains(82.3%) of coagulase negative Staphylococcus were MRCNS.The detectable rates of MRSA and MRCNS in 2004 were 75.3% and(82.3%,) which were higher than those in 2003(48.4% and 78.4%).Neither strains of S.aureus nor strains of coagulase negative Staphylococcus were found resistant to vancomycin.MRSA and MRCNS resistant rates were found(higher) than MSSA and MSCNS.From the isolated strains of E.faecalis in 2004,the resistance rates to(ciprofloxacin,) nitrofurantoin,gentamicin-500,levofloxacin,and penicillin G were found higher than that in 2003.(E.faecium)(resistant) rates were found significantly higher than E.faecalis.CONCLUSIONS Staphylococcus spp and Enterococcus spp are the main pathogens leading to clinical infections.The findings of these(surveillance)(studies) will enhance our knowledge regarding the problem of antimicrobial resistance and will serve as a basis for future policies and practice styles.