Objective:To evaluate the cytotoxicity of sodium hypochlorite(NaOCl) and chloramine-T at a same available chlorine concentration. Methods: L929 fibroblasts were used to test the cytotoxicity of NaOCl and chloramine-T at a same available chlorine concentration (0.500 0%, 0.250 0%,0.200 0%, 0.150 0%, 0.125 0%, 0.062 5%). Cell viability after 2 h, 30 min or 10 min exposure were measured by MTT assay. Results: Except the 0.500 0%-2 h group and 0.062 5%-30 min group, cell viability of NaOCl groups were higher than chloramine-T group(P<0.05). Conclusion: NaOCl solution has less cytotoxicity than chloramine-T at a same available chlorine concentration lower than 0.250 0%.

0.05).In 28 days before and after treatment,there was significant difference in H-B grade between two groups (P

BACKGROUND: A total of 300 SD rats were used for blood sampling. In abdominal aorta approach, the best puncture point was the abdominal aortic bifurcation 1-3 mm towards the heart, with a success rate of 93.6%. In posterior orbital venous plexus approach, the needle was vertically inserted into the inner canthus and rotated toward the eyeground to open venous plexus (success rate 89.9%). In cardiac puncture approach, below the xiphoid process, the needle punctured into the skin with 25°-30° oblique upward, through the diaphragm until 2.5-3.0 cm deep (success rate 83.4%). In tail end approach, surgical scissors cut off 5-10 mm tail top (success rate 94.4%). In jugular vein approach, the needle was horizontally inserted along the fourth rib into the skin until the jugular vein, about 5 mm deep, at 30°-40° with the chest surface (success rate 80.9%). A large blood volume could be obtained by abdominal aorta approach, which leads to less haemolysis and no hurt to organs, no gas embolism or haemostasis caused by inappropriate operation. But each approach has advantages and drawbacks, the selective principle should be based on experimental require.

Based on JCI standard,conduct nursing practice area activities themed as the Warmness,Safe and Painless in the emergency department and outpatient department,deepen the connotation of nursing service.Use PDCA to achieve improvement simultaneously.In all these ways,we improved nursing quality,decreased sentinel event and increased satisfactory rate of the patients,enhance the nursing staff ＇s overall image,promote harmonious relations between nurses and patients.

Female ; Humans ; Male ; Sepsis ; complications ; Wernicke Encephalopathy ; diagnosis

Objective To investigate the single nucleotide polymorphism(SNP)in the coding region in cyto-chrome P4501 A1 (CYP1A1)gene and to evaluate the contributions of SNPs to acute lymphocytic leukemia(ALL)and acute myeloid leukemia(AML)susceptibility in children.Methods One hundred and twenty -one(male 76,female 45)children with acute leukemia were selected from Department of Hematology in Shenzhen Children′s Hospital,Zuyi Medical College between January 2007 and January 201 4 as the case study group,and the average age was 4.42 years old.Case study group included 1 01 (male 65,female 36,average age 4.38 years old)ALL children (ALL group)and 20(male 1 1 ,female 9,average age 4.66 years old)AML children(AML group).A total of 1 1 6(male 74,female 42) children with respiratory tract infections on health examination during the same period were selected as the control group and the average age was 3.93 years old.SNPs in the coding region in CYP1A1 gene were detected by reverse transcrip-tional(RT)-PCR -denaturing gradient gel elelctrphoresis(DGGE)combined with direct sequencing in the case study group and the control group.Results Only one SNP,A4889G,was screened in the open reading frame (ORF)of CYP1A1 gene in Chinese Han children and the G allele frequency of CYP1A1 gene in the case group,ALL group,AML group and the control group were 31 .4%,32.2%,27.5% and 38.8%.The CYP1A1 A4889G AG and AG +GG geno-type were linked with decreased risk of AML(OR =0.31 ,95%CI:0.1 1 -0.87,P =0.02;OR =0.35,95%CI:0.1 4 -0.93,P =0.03)especially in boys with AML(OR =0.1 2,95%CI:0.03 -0.60,P =0.01 ;OR =0.1 6,95%CI:0.04 -0.65,P =0.01 ),but the CYP1A1 A4889G polymorphism was not associated with the risk of ALL(P >0.05). The CYP1A1 A4889G allele frequency and the distribution of genotypes were significantly different from those reported in America,India,Korea,Brazil and Iran(all P <0.05).Conclusions CYP1A1 A4889G polymorphism may be not as-sociated with susceptibility to ALL,but may decrease the risk of childhood AML especially in boys with AML.In addi-tion,it may exhibit an ethnic difference.

OBJECTIVE: To investigate the enzymatic hydrolysis characteristics of five medicinal starches, i.e.,waxy corn starch, potato starch, pea starch, wheat starch and common corn starch,using gravitational field flow fractionation (GrFFF) and other technologies. METHODS: Firstly, the enzymatic hydrolysis rates of the five medicinal starches were characterized by GrFFF, and the results of GrFFF were verified by determination of the reducing sugar.Secondly, scanning electron microscopy (SEM) and particle size analyzer were used to characterize the changes of particle morphology and size distribution during amylase hydrolysis. RESULTS: The experiments showed that the enzymatic hydrolysis rates of the five medicinal starches were successively decreased. The former two as well as the latter three reached the maximum enzymatic rate at 6-12 h and 12-24 h, respectively. As the enzymatic hydrolysis time increased, the particle size distribution range became wider and the average size increased. The results of reducing sugar quantitation, SEM and particle size analysis were almost identical to those of GrFFF. CONCLUSION: This study proves that GrFFF is an effective analytical technology to characterize the enzymatic hydrolysis of medicinal starch, which expands the application range of GrFFF and provides useful reference for the application of starch in medicine and food sciences.

Objective To investigate the association between CYP1A1 gene polymorphism and toxicities related to high-does methotrexate of childhood acute leukemia. Methods The SNPs were detected by reverse transcriptional (RT)-PCR-denaturing gradient gel elelctrphoresis combined with direct sequencing in 51 children with acute leukemia. Toxicities were collected thereby. Results Only one SNP,A4889G, was screened in CYP1A1. A4889G polymorphism was not associated with all the toxicities (P > 0.05). High-risk ALL children were more likely to increase the risk of thrombocytopenia compared with standard-risk ALL (P< 0.05). Conclusions CYP1A1 A4889G polymorphism may be not association with all toxicities after HD-MTX ,but the thrombocytopenia may be relevant to the risk degree of ALL children.

To evaluate the effects and safety of laparoscopic vertical banding gastroplasty (LVBG) in morbid obese subjects. The clinical data related to the metabolism of glucose, lipids and obesity in 26 obese Chinese patients with LVBG one year before and after the surgery were analyzed. The results showed that 1 year after LVBG, there was a reduction of 22.98?14.27kg in body weight, 9.31?5.13kg/m 2 in BMI, and a reduction of 47.19%?31.17% of body over-weight (EWL%) in these patients. BMI, waist, waist hip ratio, systolic blood pressure, fasting insulin, insulin resistance based on HOMA, triglyceride, cholesterol/HDL, ALT and blood creatine were decreased with reduction of body weight and BMI after LVBG. Changes in BMI and EWL% were significantly correlated with those of fasting insulin and insulin resistance. It is suggested that LVBG is effective and safe for reducing body weight and improving metabolism in the markedly obese patients.

The morbidity of pregnant related diseases and pregnant complications become higher and higher in China, such as pregnant obesity, pregnant hypertension, pregnant psychological disorder etc. which were common in western countries in the past. Dystocia and abnormal birth are increasing. The ration of operation in obstetrics to vaginal delivery is growing. These are partially due to the less exercise of mothers in pregnancy. Exercise during pregnancy is significant to the mothers as well as their children, which is an effective method to prevent or treat the diseases mentioned.