Objective To explore the contamination by Legionella pneumophila in cooling water of centralized air condi-tioning system in hospitals and hotels.Methods In Aug2001,the water from cooling towers of centralized air conditioning sys-tems in4hospitals and2hotels were sampled in W city.The membranes filtering the cooling water samples were treated by hy-drochloric acid.After treatment,the mixed treated solution was inoculated into GVPC plate and cultured in candle jar.The susepectable colonies were identified by biochemical test,serological test and PCR test respectively.Results5strains of L pneu mophila in cluding3strains of Lp1type and2strains of Lp5type were isolated from water samples of the cooling towers of centralized air conditioning systems in2hospitals and one star-grade hotel in W city.Conclusion The contamination by le-gionella in water of cooling tower of centralized air conditioning system in hospitals and hotels should be monitored closely.

Objective To analyze genetic and clinical features of 14 children with ?-thalassemia intermedia in Guangxi area.Methods ?-thalassemia genes,?-thalassemia genes,single nucleotide polymorphism(SNP) at position-158 of()~G?-globin gene,AT repeats polymorphisms of DNase I-hypersensitive site 2 of the ?-globin gene cluster locus control region(?-LCR-HS2) were detected by PCR techniques.Clinical data were analyzed.Results Genotype:1.Seven cases were homozygous or compound heterozygous for nt-28(A→G).Among them,2 cases′ genotypes were nt-28/nt-28,1 case was ?~E/ nt-28,2 cases were ?~0/nt-28,1 case(?~0/nt-28) co-inherited()~G?158(T) and 1 case(?~0/nt-28) co-inherited simultaneously()~G?-158(T) and——SEA ?-thalassemia-1 genes.2.Three cases with ?~0/?~0 presented()~G?-158(T),and other 3 cases co-inherited——SEA ?-thalassemia-1 genes.3.One patient with ?~0/?~0 co-inherited()~G?-158(T) and——SEA ?-thalassemia-1 genes.4.Six cases carrying()~G?-158(T) had(AT)_9 N_(12)(AT)_(10) sequences in ?-LCR-HS2.Phenotype:The values of Hb,MCV,HbF of 14 patients were(75.9?9.7) g/L,(68.9?5.9) fL,66.9%?16.3%,respectively.Except for 2 cases with genotypes of nt-28/nt-28 and 1 case with ?~E/nt-28 who had never been transfused,the others had more severe symptoms and required irregularly transfusion.Conclusions In the 14 children with ?-thalassemia intermedia from Guangxi area,nt-28(A→G),()~G?-158(T) and——SEA ?-thalassemia-1 gene are main alleviating gene factors.Incidence of(AT)_9 N_(12)(AT)_(10) sequence in ?-LCR-HS2 in these patients is high.Patients who are homozygous for nt-28 or compound heterozygous for ?~E have milder phenotypes.

Objective: To analyze the clinical characteristics of young patients with acute myocardial infarction (AMI), discuss the key points of health education in young patients with AMI, enhance the understanding of patients, and improve the prognosis of AMI in the young patients. Methods: hTe patients were chosen in XiangyaHospital from September 2012 to September 2013. We consulted the medical records, analyzed the clinical characteristics and results of coronary angiogram in young patients (age≤45), and compared with old patients (age≥60). Results: There were 69 young patients with AMI, about 14.2% of all the patients with AMI. Of the 69 young patients, 59 were male (85.5%) and 10 were female (14.5%). Compared with the old patients, the percentages of smoking, drinking, hyperlipidemia and overweight were much higher;the percentages of hypertension and diabetes were much lower in young patients. The coronary angiogram showed that the constituent ratios of insigniifcant disease and single-vessel disease inthe young patients were higher than those in the old patients; the constituent ratios of double-vessel disease and triple-vessel disease in the young patients were lower than those in the old patients. Conclusion: The clinical characteristics of young patients withAMI are different from the old patients.Health education should be conducted in the youth, and new diet and lifestyle should be advocated.

AIM:To observe the effects of prostaglandin E2 on transforming growth factor-?1(TGF-?1)triggered human lung fetus fibroblast(HLF)transdifferentiation and connective tissue growth factor(CTGF),collagen type I(COLⅠ)expression.METHODS:HLFs were treated with TGF-?1,the cells underwent phenotypic change to myofibroblast.The marker of myofibroblast-?-smooth muscle actin(?-SMA)was detected by immunofluorescence.The ?-SMA content was measured by Western blotting.The changes in CTGF and COL Ⅰ at transcription levels were estimated by RT-PCR method.CTGF protein expression was evaluated by immunocytochemical.Cell culture medium hydroxyproline amount was measured by colormetric assay.RESULTS:PGE2 blocked TGF-?1 induced ?-SMA positive myofibroblast transformation(P

AIM:Receptor tyrosine kinase (RTK) activation is critical for growth factor-mediated cell proliferation. The present study was designed to determine the effect of the tyrphostin AG1295 and AG1296, a selective blocker of PDGF βand αRTK,on proliferative vitreoretinopathy (PVR) development.METHODS:Rabbit conjunctival fibroblasts (RCF) cells were cultured.The effects of AG1295, AG1296,PDGF-AA and PDGF-BB on RCF proliferation are evaluated by MTT assay.Homologous rabbit conjunctival fibroblasts were injected intravitreally to make animal PVR model, followed by injection of 100μmol/L of AG1295 or AG1296 respectively. The presence of tractional retinal detachment (TRD) was assessed to evaluate the effect of AG1295 and AG1296 in vivo .Electroretinography and histologic studies were performed after intravitreal injection of AG1295 into untreated eyes to evaluate toxicity. RESULTS: Both AG1295 and AG1296 (10μmol/L) significantly inhibited rabbit conjunctival fibroblast cell growth stimulated by PDGF-AA or -BB in vitro.Development of TRD was significantly reduced (P<0.05) with 100 μmol/L of AG1295 or AG1296 in vivo, but the effect of AG1295 only present till day 14. Inhibitive effect of AG1296 is longer than that of AG1295.No significant histologic or retinal functional damage was found in both drug-treated groups. CONCLUSION: PDGF αand βreceptor specific inhibitor AG1296 and AG1295 attenuated PVR without significant side effects in rabbits, and AG1296 was better than AG1295. The much longer and stronger therapeutic effect from PDGFαreceptor inhibitor indicated that PDGF α receptor is more important in the development of PVR, and inhibition of this pathway could be a useful treatment alternative to prevent PVR.

In view of the limitation of the traditional integration solutions in the hospital information construction, this paper proposes an integration solution based on a uniform application integration platform, and analyzes the system integration architecture and the integration frame. Using this frame, we can realize the integration of the hetero structural sub-systems within the hospital.
Hospital Information Systems ; Medical Records Systems, Computerized ; Systems Integration

Objective To investigate the effect of different sputum suction methods on the incidences of pulmonary infections in patients with mechanical ventilation.Methods Four hundred and sixty-six patients with mechanical ventilation were randomly divided into study group(n=219)and control group(n=247).The two groups were treated with continued balloon filling and airway humidification.Besides,the control group received conventional open sputum suction and the study group closed continuous negative pressure sputum suction.The two groups were compared in terms of incidence of pulmonary infections.Result The incidence of the study group(8.2%)was significantly lower than that of the control group(14.6%)(χ2=4.58,P<0.05).Conclusion Compared with the traditional open conventional sputum suction method,closed continuous negative pressure sputum suction may be more effective in reducing the incidence of pulmonary infection in patients with mechanical ventilation.

Medical quality and safety are essential safeguards for the harmonious society in China, directly affecting people's sense of security and happiness. Continuously improving medical quality and ensuring medical safety are fundamental and essential to implementing the strategies of the Party Central Committee and the State Council, and promoting the construction of a healthy China. In recent years, with the rapid development of China's economy and the people's increasing emphasis on their own health and safety, China's plastic surgery industry has achieved significant progress and yielded outstanding results. However, along with the rapid growth of the industry, medical quality issues and safety accidents have occurred frequently, attracting widespread attention from all sectors of society. This article briefly outlines the history of quality management and quality control for medical quality and safety in China's plastic surgery specialty. It explores the development of quality management from its origin to medical quality management, as well as the responsibilities and contributions of the National Plastic Surgery Quality Control Center in improving industry standards and ensuring patient safety. It aims to provide support for the standardized management of the plastic surgery industry in the future, so as to promote its healthy and sustainable development.

To compare and understand the trends in quality control data changes in public and private medical institutions specializing in plastic and aesthetic major in China over the past three years.

Artemisnin is a novel sesquiterpene lactone with an internal peroxide bridge structure, which is extracted from traditional Chinese herb Artemisia annua L. (Qinghao). Recommended by World Health Organization, artemisinin is the first-line drug in the treatment of encephalic and chloroquine-resistant malaria. In the present study, transgenic A. annua plants were developed by overexpressing the key enzymes involved in the biosynthetic pathway of artemisinin. Based on Agrobacterium-mediated transformation methods, transgenic plants of A. annua with overexpression of both HDR and ADS were obtained through hygromycin screening. The genomic PCR analysis confirmed six transgenic lines in which both HDR and ADS were integrated into genome. The gene expression analysis given by real-time quantitative PCR showed that all the transgenic lines had higher expression levels of HDR and ADS than the non-transgenic control (except ah3 in which the expression level of ADS showed no significant difference compared with control); and the HPLC analysis of artemisinin demonstrated that transgenic A. annua plants produced artemisinin at significantly higher level than non-transgenic plants. Especially, the highest content of artemisinin was found in transgenic line ah70, in which the artemisinin content was 3.48 times compared with that in non-transgenic lines. In summary, overexpression of HDR and ADS facilitated artemisinin biosynthesis and this method could be applied to develop transgenic plants of A. annua with higher yield of artemisinin.
Artemisia annua ; genetics ; metabolism ; Artemisinins ; metabolism ; Biosynthetic Pathways ; Drugs, Chinese Herbal ; Mixed Function Oxygenases ; genetics ; Oxidoreductases ; genetics ; Plant Proteins ; genetics ; Plants, Genetically Modified ; genetics ; metabolism ; Plants, Medicinal ; genetics ; metabolism