BACKGROUND:Different embolic materials can be used for bronchial artery embolization in patients with pulmonary tuberculosis hemoptysis. Sodium alginate microspheres and gelatin sponge are two commonly used materials; however, there are relatively few related reports about the comparative analysis on the application effect of these two materials. OBJECTIVE:To investigate the clinical efficacy of sodium alginate microspheres for bronchial artery embolization on pulmonary tuberculosis hemoptysis. METHODS:Totaly 157 patients with pulmonary tuberculosis hemoptysis, including 98 male and 59 female patients, aged 22-75 years, were enroled and subjected to bronchial artery embolization using different embolic materials: sodium alginate microspheres group (n=74) and gelatin sponge group (n=83). During the 12 months of folow-up, the clinical curative effect, recurrence and complications condition of these two groups were observed. RESULTS AND CONCLUSION:The total effective rates of sodium alginate microspheres and gelatin sponge groups were respectively 91.19% and 81.93%, and there was a significant difference between groups (P < 0.05). The recurrence rates of sodium alginate microspheres and gelatin sponge groups were respectively 6.8% and 26.5%, and there was a significant difference between groups (P < 0.05). Additionaly, there was no significant difference in the complications between groups (P > 0.05). These results demonstrate that sodium alginate microspheres for bronchial artery embolization has a better result in the clinical treatment of pulmonary tuberculosis hemoptysis with a high clinicaly effective rate and low recurrence rate.

Objective To explore the effects and its possible mechanism of Fluvastatin on carotid artery atherosclerotic plaque(CAAP) in elderly patients.Methods 92 patients with CAAP detected by Color Doppler Ultrasonography were divided randomly into group A(48 cases) which treated with Fluvastatin 40 mg/d and group B(44 cases) which treated with 80 mg/d respectively for 40 weeks after a washout period(Fluvastatin 40 mg/d for 8 weeks).The changes of CAAP areas,the levels of serum total cholesterol(TC),low-density lipoprotein(LDL),high sensitivity C-reactive protein(hs-CRP) were observed between the before and after treatment.Results There were 40 cases in each group completed the Fluvastatin treatment for 48 weeks.After treatment,the CAAP areas in group A and B were significantliy decreased from(0.20?0.18)cm2 and(0.20?0.19)cm2 to(0.12?0.15)cm2 and(0.11?0.12)]cm2(allP

Objective To study the effect of thrombolysis of inta-arterial infusion of different concentrations of urokinase(UK) in dogs. Methods 25 healthy crossbreeding dogs were divided into five groups, with five dogs in each group. Every dog was injected with self-thrombus from carotis interna artery to embolize its distal part or branchers. Treatment with different concentrations of UK was initiated 2 hours after setting up the model of cerebral embolism by carotis interna artery. The dose of each group was: A(control group), 0.9% physiological sodium chloride solution; B,1 200U/ml UK; C,6 000U/mlUK; D, 12 000U/mlUK; E, 60 000U/mlUK. Angiography and CT scannings were performed before and after thrombolysis. Pathologic examination was performed 24 hours after embolism. Results The rate of recanalization of groups A,B were 0 but 100% for groups C,D and E, Judged by angiographies after thrombolysis, group C,D and E had significantly better reperfusion compared with group A,B(P

Objective To construct and assess the competency scale for emergency physicians in our country. Methods Learning from the milestone project in America, we developed the scale through Delphi method . The application effect was evaluated among 81 emergency physicians by questionnaire survey. Excel was used to do data entry. SPSS 20.0 was adopted to do data analysis. Factor analysis method was employed to verify the structure validity of the scale. Results The competency scale comprises six dimensions and 13 items. The scale of total Cronbach's alpha coefficient was 0.98 and the split half reliability was 0.95. Two factors were extracted by principal component analysis with cumulative contribution rate of 86.5%. The differ-ences of competency score on six aspects of different ages, titles, working years and training situation were tested and all had statistically significant differ-ence (P<0.01). Conclusion The scale developed in our study can reflect the growth stage of the emergency physicians and serve the purpose as an evaluation tool for the competency of emergency physicians in our country.

Objective To explore the expression of heat shock protein (HSP) 90α in outside of different metastatic hepatocellular carcinoma (HCC) cell lines and its role in the cells migration and invasion.Methods The expression of HSP90α was detected by Western blot analysis in conditioned media of MHCC97L and MHCC97H with low and high metastatic HCC cell lines.A small molecule cell-impermeant HSP90 inhibitor DMAG-N-oxide was used to inhibit extracellular HSP90α.Changes of the cells migratory and invasive capability were assessed by in vitro motility and invasion assay.The endogenous matrix metalloproteinase 2 (MMP-2) was demonstrated by Zymography.The expression of extracellular co-chaperone HSP70 and MMP-2 were tested by Western blots and the association between HSP90α,HSP70 and MMP-2 was analyzed by immunoprecipitation.The effects of HSP70 knockdown by siRNA,with or without MMP-2 inhibitor Batimastat,on the level of active MMP-2 and cell migration and invasion were also evaluated.Results HSP90α can express both inside and outside of different metastatic HCC cell lines,and the level of expression was consistent with metastasis potentials.After MHCC97-H cells were treated with a special HSP90α inhibitor DMAG-N-oxide for 24 h,the average migratory cell numbers (28.11 ±3.56) had a significantly reduction,compared with those without treatment group (80.12±4.16) and empty control group (82.24±4.12),respectively (P ＜ 0.01).In vitro invasion assay showed the average invaded cell numbers in treatment group (36.54±4.12) were more fewer than without treatment group (95.12±3.48) and empty control group (101.1 1±3.36),respectively (P =0.017),and accompanying with decreasing of the extracellular MMP-2 activity.HSP70 and MMP-2 could express outside of MHCC97-H cells and interact with HSP90α.Small molecular interfere RNA (siRNA) dramatically inhibited HSP70 expression and reduced the interaction HSP90α with MMP-2 and MMP-2 activity outside MHCC97-H cells,and also suppressed MHCC97-H cells migration and invasion.In addition,combining MMP-2 inhibitor had additive inhibition effects.Conclusion Extracellular HSP90α and HSP70 form chaperone complex to assist in MMP-2 activation and increases HCC cells migration and invasion,which maybe a novel therapeutic target against metastatic HCC.

Objective To investingate the features of insulim resistance in elderly hypertensive patients. Methods The levels of serum toatal eholesterol(TC),serum triglycedde(TG),fasfing blood glnsose(FBG),2h postprandial blood glucose(PBG),fasting insulin (FINS),2h postprandial insulim (PINS),intracellular free calcium of lymphocyte ([Ca2+i) were respecfived measured,then the insulin sensitivity index (ISI) wad calculated,and compared in 60 essential hypertensive patients (30 elderly,30 non-elderly) and 20 weight index matched normotensive control subjects. Results (1)the hypertensive patients compared with normotensive control subjects,the patients had hyperinsumlinemia,insulin resistance and multiple metabolic disorders. (2)The elderly hypertensive patients compared with the non-elderly hypertensive patients,the levels of TG,FBG,PBG,FINS,PINS and [Ca2+]i were Significantly higher but ISI was significantly lower,in the elderly hypertensive patients. Conclusion The elderly hypertensive patients had more obvious hyperonsulinemia,severe insulin resistance and multiple metaboie disorders,these maybe related to aging and degeneracy.

Objective To study the influence of different support heights, support numbers and cross-sectional dimensions on support performance of NiTi thoracic aortic stents. Methods Twenty-seven scaffold models with different parameters were established by using AutoCAD 2016 and SoildWorks 2014 software. HyperMesh 14.0 was used for tetrahedral mesh division, and ABAQUS 2017 was used for support performance simulation analysis. Results With the decrease of support height, the support stiffness would increase; a larger cross-section size would lead to a larger support stiffness; with the increase of support numbers, the support stiffness would increase. Among the influencing factors of support performance, the order of influence degree was support height＞section size＞support numbers. Conclusions The research findings have certain guiding significance for the development and research of thoracic aortic stents, and provide theoretical basis for the selection and optimization of clinical stents.

Circular RNA (circRNA) is a single-stranded circular closed RNA molecule formed from linear RNA through reverse splicing. circRNAs are stable, highly conserved, and tissue-specific. circRNAs can regulate physiological and pathological processes through various mechanisms such as formation of competing endogenous RNA and interaction with binding proteins. It has been recently revealed that circRNAs can be translated into peptides and proteins to participate in the initiation and development of cancer. circRNAs are promising diagnostic and prognostic markers for human cancers as well as potential drug targets for cancer therapy. This review summarized the research progresses related to circRNA-encoded peptides and proteins in a variety of cancers. These peptides and proteins are translated through two different mechanisms that depend on internal ribosome entry site and m6A, respectively. We also summarized the potential use of circRNA-encoded peptides and proteins in the diagnosis, treatment, prognosis and mechanistic studies of various cancers.
Humans ; Internal Ribosome Entry Sites ; Neoplasms/genetics* ; Peptides, Cyclic ; RNA/genetics* ; RNA, Circular/genetics*