To summarize the imaging characteristic of parotid lymphoepithelial carcinoma (LEC) by retrospective analyses of computed tomography (CT) and magnetic resonance imaging (MRI) findings for 6 cases of parotid LEC confirmed by operation and pathology and review the relevant literatures.All lesions were located in unilateral parotid.There were single (n =5) and multi-module fusion (n =1).All were located in superficial lobe of parotid gland.And deep lobe (3/6) was involved.An infiltration of casting shape was found along superficial parotid (4/6).There was an irregular margin with small spines,uniform density and signal and above moderate enhancement.An infiltration of casting shape along superficial lobe,uniform density and signal and rich blood supply suggest a diagnosis of LEC.

Objective To evaluate the impact osteolytic cytokines of expression induced by micrometer-diameter wear particles(Ti-6Al-4V and UHMWPE).Methods Filtration air was subcutaneously injected into rats'back 6 times(3 mL q?d).After a week,wear particles suspension(group A: Ti-6Al-4V,group B: UHMWPE) or physiological saline(group C) was injected into air pouch tissues.After 14 days,pouch tissues were obtained from killed rats,and were weighted,wax embedded and stained with hematoxylin and eosin, observed under microscope.AKP of serium with Automated Biochemical Analyzer,IL-6 and TNF-? expression with immunohistochemical method,and mRNA expression of extracellular matrix metalloproteinase inducer(EMMPRIN) with real-time Polymerase Chain Reaction method were detected.Results Air pouch tissues were similar to limiting membrane of periprothesis tissue in the cases of aseptic loosening.As to pouch tissue weight,there was a significant increase in group B than in group C(P

Objective To study the chemical constituents of Peperomia dindygulensis. Methods Chromatography was used to isolate and purify the chemical constituents, their structures were identified by spectral analyses. Results Eight compounds were isolated and identified as bis-(2-methoxy-4, 5-methylenedioxy)-benzophenone (Ⅰ), peperomin B (Ⅱ), peperomin C (Ⅲ), 5-hydroxy-4′, 7, 8-trimethoxy flavone (Ⅳ), 5-hydroxy-3′, 4′, 7, 8-tetramethoxy flavone (Ⅴ), 5, 3′-dihydroxy-4′, 7, 8-trimethoxy flavone (Ⅵ), ?-sitosterol (Ⅶ), hexadecanoic acid (Ⅷ). Conclusion Compound Ⅰ is a new compound named as dindygulensin. All compounds, except Ⅴ, are isolated from P. dindygulensis for the first time.

Objective To understand the current status of health knowledge demands and its associated factors in general population. Methods A questionnaire-based survey by convenience sampling method was carried out in 700 subjects aged over 15 years old in October 2014. Information of demographics and health knowledge demands were collected. Data was analyzed using SPSS 17.0. Results A total of 653 subjects were responded, with a response rate of 93.3%. Respondents in male and female were 339 (51.9%) and 314 (48.1%) respectively. There were no differences among age , educational levels and self-reported health status between the two genders 86.6% of the participants showed that they had interests in health knowledge. Educational level and age were the factors associated with the interests. 65.8% and 72.3% of people want to get practical health knowledge of western and traditional Chinese medicine respectively. The top concern of health issues were cardiovascular and cerebrovascular diseases. For preferred ways of learning health knowledge , television is the favorite one (44%), especially in elderly (over 63.8%). A relative high option rate was newspaper and magazine in all age groups. However, young people showed that they preferred the ways of the internet and Wechat (about 50%). For health disseminators, the participants in all age had greatest trust in experts in large hospitals (over 60%). The second option was retired old experts. The experienced patients were convinced in some degree and increased with age. Conclusions In future, health education in general population should considered the characteristics of the population and the applicability of knowledge. Besides , it is necessary to integrate traditional Chinese medicine with Western medicine, traditional media with new media, also authoritative experts and living example.

Objectives To investigate the properties and distributions of ampC gene among different drug-resistant strains of Serratia marcescens,and the relationship of control gene ampR with AmpC enzymes′ expressions.Methods According to the results of inducting experiment with 1/2 MIC of beta-lactam antibiotics (CTX),three-dimensional testing and isoelectric focusing electrophoresis testing,143 strains of S.marcescens were classified into three groups:including induction group, continuous low-production group and hyperproduction group. In each group, the sequences of ampC and ampR genes were amplified using the method of PCR. The products of PCR were analyzed. The plasmid-mediated beta-lactamases were detected using the method of conjugation experiment.Results Among 143 strains of S.marcescens, the continuous low -production strains, induction strains and hyperproduction strains were 14,103,and 18, respectively.125 and 99 strains were ampC and ampR gene positive, respectively.The detection rate of ampR in hyperproduction group was lower than other groups.5 sites of ampC genes and 4 sites in the Open Reading Frame (ORF) of ampR gene were easily mutated in 5 induction strains and 2 hyperproduction strains.Conclusions The production of inducing drug-resistance of some S.marcescens might be related to mutation of ampC gene encoding AmpC beta-lactamases and the ORF mutation in ampR. The continuous hyperproduction drug-resistance had something to do with deletion mutation in ampR in segmental hyperproduction strains.The plasmid-mediated AmpC enzymes hadn′t been found in S.marcescens.

BACKGROUND:Bacterial adhesion is closely related to the surface properties of cobalt-chromium al oys, and therefore, the surface modification technology has become the focus of research in this area. OBJECTIVE:To verify whether the cobalt-chromium al oy with zirconium nitride coating can improve the bacterial adhesion of metal denture materials. METHODS:Magnetron sputtering deposition method was used to plate zirconium nitride film on the surface of cobalt-chromium al oys (experimental group), and cobalt-chromium al oy specimens uncoated served as control group. Streptococcus mutans, Candida albicans, and Actinomyces viscosus were respectively inoculated on the two kinds of test specimen, and at end of culture, the colony counting was done. RESULTS AND CONCLUSION:In the bacterial adhesion test, the number of colonies of three kinds of bacteria in the experimental group was significantly lower than that in the control group (P<0.05). The number of bacterial adhesion in the control group was significantly higher than that in the experimental group. These findings indicate that the cobalt-chromium al oy covered with zirconium nitride coating can significantly reduce the adhesion amount of Streptococcus mutans, Candida albicans and Actinomyces viscosus, and thus improve bacterial adhesion properties of cobalt-chromium al oys.

Objective To analyze the predicting value of Cornell-QRS standard and Sokolow-Lyon voltage to left ventricular hypertrophy in hypertensive patients.Methods One hundred and seventy-four patients with primary hypertension were enrolled, who were divided into left ventricular hypertrophy group (LVH group,n=50)and non-LVH group(n=124).The blood pressure, Cornell-QRS standard and Sokolow-Lyon voltage were collected and compared in the following-up period.Results Compared with non-LVH group,in LVH group the history of hypertrophy was longer(P <0.05),percent of grade 3 hypertrophy was higher(P <0.05),and 24 h SBP was higher(P <0.05).During the following-up of 6 months,1 year,2 year,the SBP (systolic blood pressure), DBP (diastolic blood pressure),Cornell-QRS standard and Sokolow-Lyon voltage in LVH patients were all significantly decreased (P <0.01).Compared with non-LVH group,the incidence of non-fatal myocardial infarction and stroke was higher in LVH group[ 3(6.0%)vs .1(0.8%),P <0.05;6 (12.0%)vs .2 (1.6%),P <0.01 ].By Cox analysis,Cornell-QRS standard and Sokolow-Lyon voltage were respectively independent predictors to non-fatal myocardial infarction and also stroke.Conclusion Cornell-QRS stand-ard and Sokolow-Lyon voltage may be independent predictors to main cardiovascular accident in hypertensive patients.

Adult ; Aneurysm, Dissecting ; complications ; Aortic Aneurysm ; complications ; Humans ; Lower Extremity ; physiopathology ; Male

Bronchogenic Cyst ; Humans ; Laryngeal Diseases ; Male ; Middle Aged

BACKGROUND:Acellular vascular matrix as vascular scaffold has following advantages:acellular vascular matrix possesses complicated three-dimensional structure of natural blood vessels. Growth factor and structural domain on the surface of acellular matrix helps for cell adhesion and infiltration.OBJECTIVE:To prepare acellular vascular matrix material and to evaluate its biocompatibility in vivo and in vitro.METHODS:Trypsin and Triton X-100 were used to gradually dispose pig carotid artery and to prepare acellular vascular matrix. The biocompstibility of the material was evaluated by implantation in muscle, acute toxicity experiment and cytotoxicity test in vitro.RESULTS AND CONCLUSION:The acallular vascular matrix material possessed good chemical stability and did not release harmful factors that produced destruction and dissolution in erythrocytes, without acute hemolytic reaction or toxic effects on cell growth. The acellular vascular matrix material showed lots of inflammatory cell infiltration in eady stage of implantation, and no significant inflammatory cell infiltration in late stage of observation. Fibroblasts were visible in the acellular matrix. In addition, the acellular matrix material did not exhibit toxic effects on surrounding tissues,showing wound stage I healing.Simultaneously,histological sections demonstrated that there were good compatibility of scaffold material and surrounding tissues, without rejection.These indicated that acellular matrix material presented good biocompatibility in animals.