Objective To realize the bacterial contamination on uniforms of health care workers(HCWs)in a gen-eral hospital,and put forward the corresponding management measures.Methods In May-October 2012,a total of 360 specimens of 120 uniforms of HCWs in departments of respiratory internal medicine,general surgery,gynecolo-gy,and pediatrics were taken on the first,third and seventh day of wearing,bacterial counts on uniforms were mo-nitored,compared and analyzed.Results Bacterial counts of uniforms at different wearing time were statistically differ-ent.The longer time of uniforms were worn,the more bacteria could be detected.Bacterial contamination of nurses’uni-forms was more serious than doctors ([0.65±3.38]CFU/cm2 vs [7.68±2.99]CFU/cm2 ),contamination of uniforms of HCWs in surgical departments was more serious than non-surgical departments([10.43±4.12 ]CFU/cm2 vs [8.60± 3.01]CFU/cm2 )(U=5.06,2.78,respectively,both P<0.01),over standard rate of different sites of HCWs’uniforms were significantly different(χ2 =33.12,P<0.01));over standard rates of bacteria on the cuffs,abdomen and chest sites was 73.33%,58.33% and 36.67% respectively.Conclusion The management of cleaning system of HCWs’uniforms needs to be strengthened,the change cycle of uniforms is suggested twice a week,and the frequency needs to be increased in high contamination departments.

Objective To explore the clinical significance of changes of serum.IL-6,IL-18 and C-reactive protein(CRP) in patients with hypoxic ischemic encephalopathy (HIE).Methods Serum IL-6,IL-18 and CRP levels were measured by ELISA and immunity turbidimetry respectively in 100 patients with HIE and 100 health control.Results The HIE group serum IL-6,IL-18 and CRP levels were higher than the healthy control group,and Serum levels of IL-6,IL-18 and CRP increased when the clinical manifestation gradually increased.The CRP were positive correlation with serum levels of IL-6 and IL-18(r=0.663,0.725,all P<0.01).and the serum level of IL-6is positive correlation with IL-18(r=0.783,all P<0.01).Conclusion The serum IL-6,IL-18 and CRP may play an important role in the development process of HIE.Which were correlate to the severity of the disease and clinical change,measurements of their serum concentrations may help to predict these pathogenetic condition and prognosis criterion of the disease.

Objective To explore the drug fast mechanism on carbapenems of Acinetobacter baumannii,it is important for clinicians to choose appropriate antibiotics.Methods The influence of active efflux inhibitors carbonyl cyanide m -chlorophenylhydrazone (CCCP)on minimal inhibitory concentration (MIC)of Acinetobacter baumannii to imipenem(IMP)was measured by agar dilution method.Results At the concentration of 10mg/L,CCCP had obvi-ously effects on carbapenems MICs,the rate of resistance of imipenem decreased from 64.39% to 34.38%.In vitro CCCP enhanced the activities of imipenem.Efflux mechanism existed not only in IMP resistant strains,but also in IMP sensitive strains.But the affection of CCCP against IMP resistant strains was much stronger than that of IMP suscepti-ble strains.Conclusion Efflux pump may be one of the main mechanisms of Acinetobacter baumannii resistance to IMP,while efflux pump inhibitors may partly reduce the resistance.

Cells, Cultured ; Endothelial Cells ; drug effects ; metabolism ; Endothelium, Vascular ; cytology ; metabolism ; Gene Expression Profiling ; Humans ; Ouabain ; pharmacology ; Umbilical Veins ; cytology

The number of people with physical disabilities is increasing year by year, and the trend of population aging is more and more serious. In order to improve the quality of the life, a control system of accessible home environment for the patients with serious disabilities was developed to control the home electrical devices with the voice of the patients. The control system includes a central control platform, a speech recognition module, a terminal operation module, etc. The system combines the speech recognition control technology and wireless information transmission technology with the embedded mobile computing technology, and interconnects the lamp, electronic locks, alarms, TV and other electrical devices in the home environment as a whole system through a wireless network node. The experimental results showed that speech recognition success rate was more than 84% in the home environment.
Computers ; Disabled Persons ; Humans ; Speech Recognition Software ; Wireless Technology

Objective:To assess the vision-related quality of life(VRQoL) of the patients with simple vitreous hemorrhage after vitrectomy and analyze its influencing factors.Methods:A scale of life quality for patients with visual impairment(AQoL-DVI) were administered to 96 patients before and 6 months following vitrectomy.Scale scores were compared with vison preoperatively and postoperatively.Results:The lowest scores were at the item of "social life" and "spiritual and psychological status" before the surgery.The scores of the questionnaires increased significantly after vitrectomy.The change of visual acuity after surgery was a chief independent factor of the changes of questionnaire scores due to vitrectomy.Conclusion:The quality of life of patients with simple vitreous hemorrhage decreases sharply.VRQoL improves obviously after vitrectomy.

Objective To establish the allele-specific real-time polymerase chain reaction (ASPCR) for detection of neonatal hyperbilirubinemia related gene SLCO1B1 A388G polymorphism and apply this assay to identify the clinical samples.Methods According to SLCO1B1 A388G polymorphism loci,specific primers were designed and the assay was established.Wide type plasmid and mutant plasmid were constructed.Fifty clinical samples were selected,including 30 samples of neonatal hyperbilirubinemia that had been diagnosed with SLCO1B1 A388G mutant and 20 samples of healthy newborns without SLCO1B1 A388G mutant were selected as the controls.Wide type plasmid,mutant plasmid and clinical samples were tested by specific and non-specific primers.A388G polymorphism was determined by difference in Ct (cycle threshold) between specific and non-specific primers.Then,the accuracy,sensitivity and specificity of assay were evaluated.Results The difference in Ct (cycle threshold) between specific and non-specific primers that amplified equivalent wide type template was 13.97 ±0.75.The assay could correctly distinguish the wide type and mutant plasmid.Probit regression analysis showed the sensitivity of the assay could reach to 5.28 copies/μL.For clinical samples,the Ct values of the samples with A388G mutation was less than 37.75 and showed positive results,while the samples without A388G mutation did not show any amplification nor Ct values were larger than 37.75,which showed negative results.Conclusions ASPCR is a fast,simple and effective method for SLCO1B1 A388G polymorphism detection of the clinical simples.It can be used for large sample screening for neonatal hyperbilirubinemia gene loci.

Linoleic acid (C18∶2n-6) and ?-linolenic acid (C18∶3n-3) are found widely in fungi, plants and some lower animals. However, they can not be synthesized in mammals due to lack of △12 and ?-3 fatty acid desaturases. To enable endogenous production of essential fatty acids in mammalian cells, here the stable expression of a Caenorhabditis elegans gene FAT-2 encoding △12 fatty acid desaturase in CHO cells was reported. First, the FAT-2 coding sequence was cloned by RT-PCR. To facilitate high level synthesis of heterogeneous protein, the codon usage of the fatty acid desaturase genes was optimized according to the codon preference of mouse by site-directed mutagenesis, 2 synonymous mutations were introduced into FAT-2 gene by overlapping PCR. The codon-modified gene was finally fused to pBudCE4.1 vector (Invitrogen) under the control of CMV promoter. The expression vector pBudCE-FAT2 was linearized with NheⅠ, and then transfected CHO cells, the cells were under Zeocin selection for nine days and then propagated, then the transfected cells were harvested. The genome and total RNA were isolated for PCR and Norhern blot ananlysis. The results revealed that FAT-2 gene has been integrated into the genome of CHO cells and expressed properly. Fatty acids of total cellular lipids were analyzed by gas chromatography. The results indicate that the expression and function of △-12 fatty acid desaturase resulted in accumulation of linoleic acid. The levels of linoleic acid in transgenic cells were 2.4-fold higher than those in wild-type cells. The moderate linoleic acid in CHO cells was derived from cell culture media uptaken by cell membrane. The results demonstrate that a heterogenous desaturase gene can function well in mammalian cells and prove that transgenic approach is an efficient strategy for changing fatty acid composition of mammals.

Objective:To investigate the effect of all-trans retinoic acid (ATRA) on the differentiation of marrow stromal stem cells(MSCs)into neurons. Methods: Rat MSCs were expanded as undifferentiated cells in culture for 5-7 passages and pretreated with ATRA for 24 h, then induced by modified neuronal medium (MNM) for 18 h. The control cells were directly cultured in MNM without ATRA pretreatment. Immunocytochemistry was used to detect the expression of nestin, neuron-specific enolase (NSE), neuron-specific nuclear protein (NeuN) and microtuble-associated protein (MAP-2) in the experimental groups and the control cells. The change of cell proliferative cycles and the expression of retinoic acid receptor beta (RAR?) were detected before and after ATRA treatment. Results: 1. The expression of nestin, NSE, NeuN and MAP-2 was much higher than that of the control group. 2. No changes were found in the cell proliferative cycles before and after ATRA treatment. 3. No expression of RAR? was found in MSCs; but positive expression of RAR? was detected afer 24 h of ATRA treatment and it was (20.3?4.2)%. Conclusion: ATRA can activate gene transcription via nuclear receptor RAR? and promote MSCs transdifferentiation into neurons.

AIM: To investigate the mechanism of AngRem104-mediated regulation of fibronectin gene in human mesangial cells. METHODS: A series of deleted FN promoter sequences was constructed, which fuse to a luciferase reporter gene, and then the potential active regions that respond to AngRem104 in the upstream regulatory sequence of human FN gene was screened by detecting the luciferase activity of promoter-reporter gene. RESULTS: The detection of relative luciferase activity revealed that there was no significant differences when the HMC were transfected with FN122-reporter gene together with sense AngRem104 construct, but the luciferase activity significantly increased when transfection of FN507-reporter gene construct together with sense AngRem104 construct. However, no increase in luciferase activity was observed when transfection of FN1280-reporter gene construct together with sense AngRem104 construct. The potential regulatory region responds to AngRem104 is in the upstream sequence (-122 to -507) of human FN gene. CONCLUSION: Our preliminary study provided the evidence that AngRem104 may mediate the transcription of the FN gene via the activation of its promoter.