OBJECTIVE To study commonly encountered pathogenic bacteria leading to lung infection and their drug sensitivity. METHODS In the period of Jan 2003 to Feb 2005,the pathogenic species and drug sensitivity of 233 positive samples isolated from 496 phlegm samples were analyzed.RESULTS Totally 234 strains of pathogenic bacteria were(isolated) from 233 phlegm samples.It had been found that 132 strains of Gram-negative bacilli,(accounted) for(56.4%);57 strains of Gram-positive cocci,accounted for 24.4 %;41 strains of fungi,accounted for 17.5%;and 4 strains of Gram-positive bacilli,accounted for 1.7%.The pathogens of the highest infective rate were:(Pseudomonas) aeruginosa(15.4%),Candida albicans(11.6 %),Enterobacter cloacae(6.0%),Klebsiella(pneumoniae)(5.6%),Escherichia coli(5.1%),Staphylococcus aureus(4.3 %),Streptococus pyogenes((4.3%)),Acinetobacter baumannii(3.6%),and C.tropicalis(3.6 %).Results of drug sensitivity indicated that drugs selected sensitive to Gram-negative bacilli were:imipenem(75.4%),piperacillin/tazobactam(38.9%),(ciprofloxacin)(37.3%),gentamicin(37.3%),and amikacin(36.5%).Drugs sensitive to Gram-positive cocci were:vancomycin(75%),rifampin(55%),and erythromycin(35%).CONCLUSIONS The commonly encountered pathogens of lung infection in our hospital are: P.aeruginosia,C.albicans,E.cloacae,K.pneumoniae,E.coli,S.aureus,and S.pyogenes.Infective rate of Candida is increasing evidently.Antibiotic resistance of bacteria(becomes) severe,drugs applied became less and less.Clinic should(actively) develop phlegm cultivation and drug sensitivity test,applying antibiotics reasonably,reducing production of bacteria resistant to drugs.

Objective To investigate the effects of norepinephrine on brain edema of rats in 24 h after severe burn.Methods A total of 48 healthy Wistar rats were randomly divided into 8 groups: normal control group,1,2,5 mg/kg norepinephrine,burn group,burn with 1,2,5 mg/kg norepinephrine pretreatment groups(n=6 in each group).The rats in all burn groups were scalded into 40%TBSAⅢ degree burn.Pathological features were observed,and blood brain barrier,brain water(%) were examined in postburn 24 h.Results Pathological evidence of brain edema exhibited in the burn group and burn group with norepinephrine pretreatment,and increased permeability of blood brain barrier and brain water were observed.The burn with norepinephrine pretreatment groups were more significantly severe in comparison with simple burn groups and normal control group.Conclusion Norepinephrine may play an important role in brain edema in postburn 24 h,suggesting that stress of postburn may induce brain edema.

Objective:To investigate the influence of psychological intervention on depression and quality of life among perinatal women.Methods:60 perinatal women were selected under the condition of the study.30 cases were chosen randomly from the 60 women as the psychological invention group and another 30 cases as the control group.The interventon group received psychological intervention which included supportive therapy,health education,individual psychotherapy,and family and social supportive therapy;the control group received no invention measure.Psychometrics was used for 30-and 38-week gravida of both groups and continuous psychological intervention was enforced for more than seven weeks for the intervention group.Results:The depressive factor of the psychological group was lower than of the control group(P

Objective To investigate the effects of norepinephrine (NE) on vascular endothelial growth factor (VEGF) expression of brain tissues in severe burn rats. Methods The healthy male Wistar rats were made into 40%TBSAⅢ?burn models to observe the effect of NE on blood brain barrier. In the meantime, effect of NE was examined by means of immunocytochemistry and real time PCR. Results (1) Permeability of blood brain barrier was increased in burn and burn with NE stimulating rats, with significantly statistical difference compared with normal control group (P

Angiotensin-Ⅱ-induced apoptosis was widely involved in the pathogenesis of diabetes mellitus, cardiovascular diseases, etc. The mechanism of angiotensin-Ⅱ-induced apoptosis is complicated, including the receptor (AT1R and AT2R) level regulation, Fas/FasL pathway, and the regulation by p53 family, Bcl-2 family, Caspase family, Ang-(1-7), etc. Mitochondria damage and oxidative damage play important roles in the apoptosis process. This article reviews the previous researches on angiotensin-Ⅱ-induced apoptosis.

Pituitary stalk interruption syndrome(PSIS) is a rare disease characterized by different degrees of anterior pituitary hormone deficiency.The typical imaging finding is a thin or absent pituitary stalk,often associated with an ectopic posterior pituitary and a hypoplastic anterior pituitary.The cause is still unkown.Dynamic contrastenhanced MRI helps to confirm the diagnosis.Replacement of multiple anterior pituitary hormones is the key of the treatment.Doctors should have a thorough understanding of the disease and give patients efficacious treatment and a better prognosis would be obtained.

Objective To observe the effects of substance P (SP), NK1 receptor antagonist and nitric oxide synthase (NOS) inhibitors on the secretion of nitric oxide (NO) and expression of inducible NOS (iNOS) by immortalized human keratinocyte line HaCaT. Methods The NO level in supernatant of cultured HaCaT cells was measured by nitrate reductase assay after treatment with different concentrations (10-9 to 10-6 mol/L) of SP, or the combination of SP (10-8 mol/L) and spantide (3×10-7 mol/L), aminoguanidine (10-7 mol/L), 7-nitroindazole (10-6 mol/L) or L-NAME (10-5 mol/L) for various durations. Reverse transcription-PCR was performed to measure the expression of iNOS mRNA in HaCaT cells incubated with SP of 10-8 mol/L for 1, 24 and 48 hours. Results The SP of 10-9 to 10-6 mol/L significantly induced the production of NO by HaCaT cells, and the highest level of NO was observed in HaCaT cells treated with SP of 10-8 mol/L. The synthesis of NO by HaCaT cells induced by SP was inhibited by Spantide of 3 × 10~7 mol/L at all time points (30 minutes, 1, 3, 6, 12, 24 hours, all P< 0.01), by L-NAME of 10-5 mol/L at 3 time points (30 minutes, 1, 24 hours) and by 7-nitroin-dazole of 10-6 mol/L at 2 time points (30 minutes, 1 hour, both P< 0.05), but not by aminoguanidine of 10-7 mol/L at any time point (all P > 0.05). After treatment with SP of 10-8 mol/L, the relative mRNA expression of iNOS was 0.199 ± 0.018 and 0.516 ± 0.030 at 24 and 48 hours, respectively, and there was a statistical difference between the two time points (P < 0.01). Conclusions SP can reinforce the secretion of NO by HaCaT cells via NK1 receptor activation, but iNOS is unlikely to be the primary origin of NO secreted by HaCaT cells induced by SP.

Objective To study the quality control of previous process of apheresis platelets detection .Methods Single and double apheresis platelets each of 100 samples were collected and were diluted 1∶1 ,1∶3 and 1∶7 .Aautomatic Blood Cell Count-er was employed to detect the platelet count .Another 100 samples of apheresis platelets were collected and stand at room tempera-ture for 0 ,30 ,60 ,90 ,120 min ,After 1∶3 dilution ,the platelet counts were detected .Results Differences of platelet counts be-tween 1∶1 and 1∶3 dilution ,1∶3 and 1∶7 dilution of single or double apheresis platelets showed statistically significant differ-ences(P<0 .05) .Differences of platelet counts between standing for 0 ,30 min and standing for 60 ,90 ,120 min were found statis-tically significant(P<0 .05) .Conclusion Quality control of previous process of apheresis platelets detection is very important for platelet count after collection .

Blood GSHpx activities of populations living in Keshan disease affected and non-affected areas were examined. The enzyme activities of people in affected areas were lower than that in non-affected areas. That of agricultural population is lower than that of workers and staff members living in same affected areas. The enzyme activities of patient suffering from Keshan disease were a little lower than that of other children. After oral administration of Na2SeO3 for one year, the enzyme activities of children in affected areas increased to the same level of that in non-affected areas. Significant correlation was found between selenium concentration of blood and hair and GSHpx activities.

Objective To explore the diagnostic value and clinical significance of simultaneous detection of AFP,AFU and TSGF in patients with primary hepatic carcinoma(PHC).Methods Serum AFP,AFU and TSGF were detected simultaneously in 62 patients with PHC and 30 controls.Results The levels of AFU and TSGF in primary hepatic carcinoma were all significantly higher than that of controls(P