Objective To investigate the polymorphism of glutathione S-transferease P1 gene(GSTP1) and the association between the mutation and susceptibility in childhood asthma.Methods The distribute frequency of Ile105/Ile105,Ile105/Val105 and Val105/Val105 ge-notype in GSTP1 of 51 children with asthmatic and 40 normal children were studied with polymerase chain reaction-restriction tragment length polymorphism(PCR-RFLP).Results The frequencies of Ile/Ile Ile/Val,Val/Val genotype were 66.7%,27.4% and 5.9%,the frequencies of Ile,Val allele were 80.4% and 19.6% in the asthmatic group.But the frequencies of Ile/Ile,Ile/Val,Val/Val genotype were 90.0%,7.5% and 2.5%,the frequencies of Ile,Val allele were 93.8%,6.2% in control group.The frequencies Ile/Val,Val/Val genotype and Val allele in asthmatic group were more than that in control group.A significant difference was found in the frequency distribution of GSTP1 genotypes between two groups(?2=6.947 P

Objective To establish the pharmacodynamic model of sevoflurane with bispectral index (BIS) as the effective index in pediatric patients.Methods Thirteen ASA physical status Ⅰ or Ⅱ pediatric patients,aged 4-9 yr,weighing 12-39 kg,undergoing non-cardiac surgery,were selected in the study.The pediatric patients sequentially inhaled 1％,5 ％ and 1％ sevoflurane via a face mask and each concentration was inhaled for 15 min.BIS value,HR,BP and SpO2 were automatically recorded every 10 s.Based on nonlinear mixed effect modeling,the population pharmacodynamic model of sevoflurane was established using NONMEM software.The effect of age on the pharmacodynamic parameters was evaluated using a stepwise forward addition then backward elimination modeling approach.The standard for model improvement was defined as a decrease in the value of the objective function by more than 3.84.Results Twelve pediatric patients,aged 4.0-8.5 yr,weighing 12.8-38.0 kg,with body height of 92-135 cm,were enrolled in this study and the data which were enrolled comprised 2964 effective concentration-time-BIS points.The model was not improved significantly with any covariates (age,body height,and body weight) introduced (P ＞ 0.05).The estimated parameters of the final pharmacodynamic model of sevoflurane were as follows:ke0 =O.516/min ; EC50 (BIS50) =2.11％ ; γ =2.46 ; E0 =74.6 ; EMAx =11.2.Conclusion The pharmacodynamic model of sevoflurane is successfully established with BIS as the effective index in pediatric patients,and the analysis for each parameter of the model indicates that the sensitivity to sevoflurane is lower,but the blood-brain equilibration time of the drug is shorter and the onset and recovery are faster in children than in adults.

AIM:To investigate the potential of hematopoietic stem cells(HSCs)derived from mouse embryonic stem cells(ESCs)to reconstruct hematopoiesis in vivo.METHODS:Using a three-step method,a mice embryonic stem cell line,E14.1 was induced into hematopoietic stem cells.The cell markers with CD34+/Sca-1+ were identified by flow cytometry analysis,then HSCs(1?109 cells/L)from third-step were injected into SCID mice for observing teratoma formation.To validate function of HSCs,colonogenic cell assay was conducted and the hematopoiesis in lethally irradiated mice was reconstituted.RESULTS:The method of three-step differentiation,combined to use more hematopoietic stimulating factor promoted the E14.1 cell differentiation into HSCs with highest percent of CD34+/Sca-1+ cells(as high as 58.64%?4.20%)with more CFU-E,CFU-GM and CFU-GEMM populations.The cells showed the character of hematopoietic progenitors by Wright-Giemsa staining.Positive selected CD34+/Sca-1+ cells by magnetic sorting from third-step differentiation were transplanted into 7 lethally irradiated female mice while predominant hematopoietic reconstitution were observed in 10 d after transplantation,with 71.4%(5/7)successful engraftment rate.Three recipients showed that the cell population of the peripheral blood leukocytes,red blood cells and hemoglobin approached to normal index at 40 d after transplantation,but followed relative slow renew in platelet count.Survival rate in transplant group was 43%,compared to 100% mortality in control mice.Karyotyping assays confirmed the female mice with XY.CONCLUSION:The three-step differentiation and the culture conditions described here support the differentiation of mouse ESCs into HSCs.HSCs derived from mouse ESCs can reconstruct hematopoiesis.

Adult ; Aged ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Female ; Humans ; Hyaluronic Acid ; metabolism ; Laryngeal Neoplasms ; metabolism ; pathology ; Male ; Middle Aged ; Neoplasm Staging

ObjectiveTo explore the features of the cleanliness change with time during the use of laminar operating rooms in order to establish reliable quality assurance system. MethodsTwo grade 3 lami-nar operation rooms were chosen to be tested after one and a half year and two and a half years, laser counter was used to detect the static particulates after cleaning for 30 minutes and 45 minutes. ResultsAfter the laminar operation room was used for one and a half years the amount of 0.5 μm particulates in indoor air was less than 350 per liter, and after two and a half years it's above 350 per liter after cleaning for 30 minutes, an obvious difference than the previous one. The anaount of 1 μm and 2 pan particulates also increase obviously, but ff cleaning for 45 minutes the amount of 0.5 μm particulates in indoor air will fulfill the qualification. Al-though the amount of 0.5 μm, 1 pan and 2 μm particulates after 2 years using was higher than the one and a half yesrs'using after cleaning for 45 minutes, but the difference had no statistic meaning. CondusionsThe elesnliness of laminar operation rooms will drop as time prolonged, Amount of particulates in indoor air will in-crease too but the cleanliness can be ensured by extending cleaning time. After the quality assurance sys-tem was established the amount of smile particulates is still within the standard level

Objective To discuss the clinical value of electronic bronchoscopic intervention in treatment of tracheobronchial tuberculosis. Methods Clinical features of 45 patients with tracheal and bronchial tuberculosis which were confirmed by electronic bronchoscope and treated by bronchoscopic intervention were retrospectively analyzed from January 2007 to December 2013 in our hospital. Results The efficiency of bronchoscopic intervention is 88.9%, of which 28 cases achieved a significant effect (accounting for 62.2%). Conclusion Electronic bronchoscopic intervention is a preferred way in treatment of tracheobronchial tuberculosis.

BACKGROUND:Fentanyl transdermal system has analgesic effect similar to oral sustained-release morphine and has been widely used in advanced cancer pain management in several years. However, recent literatures about some serious adverse events associated with fentanyl transdermal system have been published, and the long-term safety of fentanyl transdermal system treatment is stil chalenged. OBJECTIVE:To observe the long-term clinical efficacy and safety of fentanyl transdermal system for pain management in patients with advanced cancer. METHODS:A total of 309 patients with advanced cancer pain were enroled, including 166 females and 143 males. The age ranged from 26-72 years old. Patients received oral sustained-release morphine for 2 weeks, and then were subject to fentanyl transdermal system for pain management at the 3rd week until the 12th week. A prospective study with self-contrast method was conducted to compare the analgesic effects of these two drugs, as wel as patient's acceptability, adverse events and toxicity in the administration course. RESULTS AND CONCLUSION: Stable pain relief was harvested throughout the oral administration of both sustained-release morphine and fentanyl transdermal system therapy. During the use of oral sustained-release morphine, adverse reactions appearing in sequence were constipation, nausea, fatigue and anorexia. After converting to fentanyl transdermal system, the symptoms of constipation (χ2=5.22,P=0.02) and nausea (χ2=4.38, P=0.04) significantly reduced, and vomiting was abated but showed no significant difference (χ2=2.7,P=0.10). 2.3% of patients had skin reactions to the patches, and regressed after replacing the patch area. Skin reactions were aleviated at 2-10 weeks after oral administration of fentanyl transdermal system. Some uncommon adverse events including headache, diarrhea, dyspnoea, excessive sweating or other symptoms often occurred at the time of the initial dosage increase. Preference or strong preference for fentanyl transdermal system in comparison to previous oral sustained-release morphine was reported by 91% of patients. These results demonstrate that fentanyl transdermal patches can provide stable pain relief for advanced cancer patients with good acceptability, and mitigate the incidence of adverse events due to oral drugs.

OBJECTIVE To study the germicidal efficacy and germicidal mechanism of compound ortho-phthalaldehyde(OPA) against Bacillus subtilis var.niger spores.METHODS Suspension quantitative germicidal test was used to observe the germicidal efficacy of compound OPA against B.subtilis var.niger spores.The germicidal mechanism of compound OPA was studied in transudation of protein and DNA and ultra-microstructure.RESULTS The results showed that at(20?1)℃,the logarithm mean reduction was greater than 5.00,after B.subtilis var.niger spores had been exposed to compound OPA for 30min.Some protein leaked from B.subtilis var.niger spores treated with compound OPA for some time,but there wasn′t DNA.The ultrastructure showed that the shape was amorphic,the electronic density of the coat was unequal,the core leaned to one side or appeared the transmission area.CONCLUSIONS Compound OPA can effectively kill B.subtilis var.niger spores.Its mechanisms are that in accordance with benzolkonium bromide(Bromogeramine) the compound OPA can change the osmotic pressure of cell and increase cell permeability,then it can easily penetrate to their target sites within the cell.

Objective:To observe the hypoglycemic effects of Cortex Lycii Radicis (CLR) on alloxan induced diabetic mice.Methods:The alloxan induced diabetic mice were given drug decoction of CLR[2.5g/(kg?d) -1 , or 5.0g/(kg?d) -1 )] for successive 2 weeks, The blood sugar level was determined with GOD method.Results:There were remarkedly differences in the levels of blood sugar between before and after treatment of various groups. ( P

Objective To investigate the value of external counterpulsation and traction therapy on patients with vertebral artery insufficiency syndrome by use of transcranial Doppler (TCD). Methods Based on the criteria of clinical diagnosis, 86 patients with vertebral artery insufficiency syndrome and 60 healthy persons were examined by EME 4004 type TCD. The peak velocity (Vp) and mean velocity (Vm) of blood flow of the vertebral artery (VA) and basilar artery (BA) were detected and analyzed before and after rehabilitation treatment. Results The blood flow velocities of the vertebrobasilar artery (VBA) of the patient group were much lower than that of the control group ( P 0.05). Conclusion TCD examination while rotating neck could provide valuable information for the diagnosis and rehabilitation assessment of patients with vertebral artery insufficiency syndrome. External counterpulsation and traction therapy are effective in the treatment of the vertebral artery insufficiency syndrome.