People′s misunderstandings about the radiological check in health examination: Equalize the price of the medical check equipment with the accuracy of the check .The health examinees′misunderstanding about the harm which X-Ray can cause , thinking that low dose chest CT only can do very little harm to human body .The health examination unit makes the rate of finding out early lung tumor a main basis of assessing a medical personnel ′s achievement , which caused medical staff go against epidemiological laws when diagnosing tiny nodules .Misun-derstandings about some biological features such as the scale or the growing speed of the nidus , and laying exces-sive importance on the check accuracy , which caused some examinees received excessive X -Ray, overdiagnosis and overtreatment .So, people must treat radiological check in health examination rationally and dialectically , in order to further realize the legitimation and rationalization of radiological check .

As a part of the central nervous system,retina shares many characters of the brain,including many of the functions and dysfunctions of microglia.Microglia plays important roles in multiple inflammatory procedures and degenerative diseases of the central nervous system and retina.Retinal microglia is involved in ocular inflammatory,age-related macular degeneration and diabetic retinopathy.These cells have also been identified in brain tumor and retinoblastoma.They can secrete various cytokines and growth factors that may contribute to the successful immune evasion and therefore promote the growth and invasion of tumor.To better understand the function of microglia is essential for us to develop the immune-based treatment strategies against central nervous system tumor and retinoblastoma.

ObjectiveTo evaluate the effect of health education combined with psychological counseling on mental state of patients with coronary heart disease complicated with anxiety and depression. Methods70 cases of patients with coronary heart disease with anxiety and depression were divided into the observation group and the control group with 35 cases in each group.The control group received regular professional care,while the observation group was given health education combined with psychological counseling on the basis of regular professional care.The SAS and SDS score was compared between the two groups. ResultsAfter treatment,SAS and SDS score of two groups apparently improved.After treatment,SAS and SDS score of the observation group was less than the control group. ConclusionsHealth education combined with psychological counseling for patients with coronary heart disease complicated with anxiety and depression can effectively alleviate the anxiety and depression emotion of patients and increase life quality of them.

The suggestion of microcosmic syndrome differentiation is to meet the needs of clinical diagnosis and treatment of traditional Chinese medicine (TCM), the needs of evidence based medicine and the needs of the development of syndrome differentiation in TCM. The possibility of microcosmic syndrome differentiation might be the development of integration of traditional Chinese and Western medicine as well as modern science and technology. Microcosmic syndrome differentiation has its superiority and limitation. There are some problems in developing microcosmic syndrome differentiation, such as lack of standard for syndrome differentiation, contradiction between single microcosmic index and the entirety, non-specificity of the relationship between microcosmic indexes and syndromes, and the influence of disease on microcosmic syndrome differentiation, discrepancy between the essence study of TCM syndromes and the clinical practice. It is suggested that the concept of TCM syndrome is a certain pathological process during the onset and development of disease, composed of some subjective and objective indexes. The objective indexes include the macrocosmic and the microcosmic indexes, the entirety and the part.

Objective To explore and establish the possible method of low-intensity pulsed ultrasound(LIPUS) irradiation directly combined with SonoVue microbubbles could enhance 5-azacytine (Aza) induced cardiomyogenic differentiation of human bone marrow mesenchymal stem cellin(MSCs)vitro,initially explore the appropriate irradiation condition,and to provide experimental basic data for ultrasound-mediated microbubble destruction application in MSCs transplantation for acute myocardial infarction.Methods (1) In order to screen out the appropriate ultrasound irradiation intensity and time without conspicuous harm to MSCs,stem cells were exposed to different ultrasound intensity irradiation (0.11,0.33,0.55,0.77,0.99 W/cm2) and time (0,30,60,90 s) and then cell proliferation determined by methyl thiazolyl tetrazolium(MTT).In order to screen out the appropriate microbubble-to-cell ratio without conspicuous harm to MSCs,stem cells of different microbubble-to-cell ratios (0,10,50,100,150) were exposed above the screened ultrasound irradiation intensity and time and then cell proliferation determined by MTT.(2) MSCs were divided into four groups and induced cardiomyogenic differentiation by different inducing systems in vitro as follows:no-treatment group,5-Aza inducing group(10 μmol/L),microbubble and ultrasound group,5-Aza inducing (10 μmol/L) with microbubble and ultrasound group,followed by four weeks of further culture.The morphological changes were studied daily under phase-contrast microscope,then the expression of cardiac troponin-T (cTnT) was detected by immunocytochemistry method to analyze and compare differentiation rate of cardiomyocyte-like cells in each group.Results (1)The direct ultrasound irradiation condition of no conspicuous harm to MSCs,but with destruction was intensity of 0.55 W/cm2,exposure time of 30 s and microbubble-to-cell ratio of 50.(2) This study confirmed the feasibility of direct ultrasound exposure of LIPUS on MSCs in vitro.(3) At 28 days after induction,the stem cells of 5-Aza inducing group and 5-Aza inducing with microbubble and ultrasound group expressed cTnT and the positive rate of the latter was higher than the former by immunocytochemistry (13.69％ vs 34.13％,P ＜0.05).Conclusions The appropriate ultrasound direct irradiation condition was intensity of 0.55 W/cm2,exposure time of 30 s and microbubble-to-cell ratio of 50.Appropriate conditions of LIPUS could enhance 5-Aza induced cardiomyogenic differentiation of MSCs in vitro.

A mechanical shimming method and device for permanent magnet of MRI system has been developed to meet its stringent homogeneity requirement without time-consuming passive shimming on site, installation and adjustment efficiency has been increased.
Magnetic Resonance Imaging ; instrumentation ; methods ; Magnets

Toll-like receptors (TLRs) can recognize pathogens associated molecular of micro-organisms,leading to activation of the downstream signal transduction pathway and participate in innate and adaptive immune response.TLRs can also recognize endogenous danger signaling molecule and therefore be involved in pathogenesis of many low-grade chronic inflammatory and autoimmune diseases.TLRs are always expressed on immune cells,and recent studies confirmed that retinal pigment epithelial (RPE) cells also express TLRs.This review focuses on the research progress of fundus diseases and TLRs,such as the recognition of exogenous pathogenic microorganisms and endogenous danger signals in fundus,induction of inflammatory response,phagocytosis of photoreceptor outer segment by RPE and angiogenesis of fundus diseases.

Adenovirus as gene transfer vector is characterized by high transfection efficiency,high titer,good stability in target cells and low pathogenicity,and has been widely used in gene therapy.Compared to first-and second-generation adenovirus vectors,the third-generation adenovirus vectors have unique advantages for gene therapy because of their low immunogenicity and high capacity.However,the clinical application of the third-generation adenovirus vectors is hampered by the existance of helper contamination and difficulties in their large-scale production.

Viral infections remain a major cause of morbidity in patients with immunodeficiency,such as recipients of hematopoietic stem cell transplantation (HSCT).Adoptive transfer of donor-derived virusspecific cytotoxic T lymphocytes is a strategy to restore virus-specific immunity to prevent or treat viral diseases and has been tested in the clinical setting for more than 20 years.The 55th ASH annual meeting reported lots of basic and clinical experience about CTL and summarized lots of trails to evaluate it,which will give us some new thought about the antivirus therapy after HSCT.

0.05),and was superior in group C than that in groups A and B(P0.05),and was superior in group C than that in groups A and B(P