OBJECTIVE: To recognize the research status on the mechanism of reactive oxygen species (ROS) and NADPH oxidases in cell growth and death,and explore the effects of ROS and NADPH oxidases on cardiomyocyte differentiation.DATA SOURCES: A computer-based online search of Medline was undertaken for the articles about the action mechanism of reactive oxygen and NADPH oxidases in cell growth and death published in English between January 1997 and December 2003 with the key words of "Reactive oxygen species, NADPH oxidase, Cardiomyocytes, Differentiation, Signal transduction".STUDY SELECTION: Inclusive criteria: ①Articles on ROS production and structure and activation of NADPH oxidase and their action mechanism in cell growth and death; ②Research about the molecule mechanism of cardiomyocytes differentiation. The repetitive research and review articles were excluded.DATA EXTRACTION: Totally 132 articles about the action mechanism of ROS and NADPH oxidase and cardiomyocytes differentiation were collected, and 78 ones met the inclusive criteria.DATA SYNTHESIS: ①ROS involved in pathogenesis of many diseases were mainly from intramitochondrial electron transport chains, and NADPH oxidase was closely related with ROS production; NADPH oxidase firstly found in phagocyte was a kind of multienzyme complex, and its activity was regulated by the concentration of Ca2+ in cells and mRNA expression of its subunits. ②At present, many researchers presumed that oxidative stress was a double-edged sword, and it two-ways regulated the cell proliferation and death, in which ROS served as the second messenger in the signal transduction. Recent data showed that ROS and NADPH oxidase played important roles in cardiomyocytes differentiation; however, it was not identified which subunit of NADPH oxidase expressed in myocardial cells and its detail regulative pathway. Those problems were important for further study in the molecule mechanism of cardiomyocytes differentiation.CONCLUSION: ROS including superoxide anion (O2-), hydrogen peroxide (H2O2) and hydroxyl radical (OH-), are generated in cardiomyocytes mainly by a membrane-bound NADPH oxidase (NOX). The NOX-derived ROS, as the second passenger, play important roles in various intracellular signaling pathways. In cardiomyocytes, ROS have the potential to alter the balance between cell growth and death through these signaling pathways. Recently,ROS have been demonstrated to play a critical role in regulation of cardiomyocyte differentiation from embryonic stem cells. Research in the regulation mechanisms of ROS will contribute to our better understanding of he role of ROS and NADPH oxidase in cardicomyocyte differentiation and will lead to the identification of factors able to promote cardiac differentiation.

Reconstructing the three-dimensional finite element model of compression fracture of T_(12) based on the 210-layer consecutive CT DICOM format images from one patient of compression fracture of T_(12) to simulate the hyperextending. Bound the lower of T_(12), a vertical traction at the top of T_(11)and a 3.0 cm-displacement toward the vertebra by three steps at the top of spinous process of T_(11), T_(12) and L_1 was provided. The procedure began computing to reed the results about dynamic biomechanical characteristics of anterior longitudinal ligament. A realistic appearance and full biomechanical properties 3D finite element model of thoracolumbar spine compression fracture was established. The anterior longitudinal ligament was changed from relaxation to tension after hyperextending. The stresses of anterior longitudinal ligament were different when the hyperextending fulcrum was different. The treatment effect of thoracalumbar spine compression fracture by hyperextending is exact. The anterior longitudinal ligament plays an important role in the treatment. Finite element analysis of mechanism of traditional practices has many advantages, such as reliable experimental results, direct displaying results, saving resources and accurate simulation.

Objective To explore the role of Joint Commission International(JCI) standards on the improvement of pharmaceutical care in pharmacy intravenous admixture service (PIVAS) during the JCI accreditation.Methods The changes of PIVAS in Huangshi Central Hospital were analyzed and compared during JCI accreditation in respect of facilities,software management,service processes,safety awareness of the PIVAS staff and pharmacy management,service evaluation,error rate,etc.Results After JCI accreditation,the process of PIVAS were optimized,the software were updated ,and the safety awareness of PIVAS staff was improved;the management of high alert drugs was implemented more strictly;more importance was attached to the details of pharmaceutical care;the satisfaction degree of the clinic units to PIVAS was increased from 87.0% in 2014 to 98.0% in 2015;error rate was decreased from 0.40‰ in 2014 to 0.15‰ in 2015.The incidence rate of defective product was decreased from 0.32‰ in 2014 to 0.07‰ in March 2015.The correct rate of medical waste classification treatment was increased from about 85.5% in 2014 to 100.0% in 2015.Hand hygiene compliance rate and correct rate were increased up to 100.0%.6S site management activity participation rate was increased up to 100.0%.Conclusion The application of JCI standards and the process of JCI accreditation improve the quality of pharmaceutical care in hospital PIVAS.It can improve the medical safety in hospital.

Subclavian artery occlusion is a common peripheral artery occlusion disease of various causes,with incidence of 1.9％.The most common symptoms are dizziness,ataxia,and hemiplegia that are caused by subclavian steal syndrome.Surgery is the only therapeutic method for symptomatic patients.Open surgery remains an important role despite of the rapid progress in endovascular surgery.Main surgical method includes carotid-subclavian transposition (CST),carotid-subclavian bypass (CSB) and axillary-axillary bypass.Each one is suitable for different lesions and anatomies.Both the effectiveness and safety have been testified.

AIM: Studies reveal that, cytokines play an important role in the process of various inflammatory reaction, wound repair and cell mutation, also, cytokines are expected to be a novel indicator of ratiocinating wound time. This study was designed to explore the changes in gene expression of interlukin-1? (IL-1?) and interlukin-1? (IL-1?) during the skin wound healing process in mice at different phases. METHODS: The experiment was carried out in the laboratory of Forensic Medicine Department of China Criminal Police University from March 2006 to December 2007. ①Thirty-five BALB/c inbred male white mice of cleaning grade, aged 25-27 g, were used in this study. ②Skin wound model was induced by injuries in the area of 1.0 cm away from two sides of spinal column, without affection on muscles. Three pairs of injuries were established in each mouse. Five animals were decapitated under anesthesia at 0, 3, 6, 12 hours and 1, 3, 6 days, respectively, whereas those at 0 hour were taken as controls. ③The white blood cells at different phases were observed under microscope after immunochemical staining. Real-time quantitative polymerase chain reaction method was applied to detect gene expression of IL-1? and IL-1?. RESULTS: Thirty-five BALB-c inbred male white mice were all involved in the result analysis. ①Skin wound was weakly positive during 0-5 hours after injury; the positive reaction was attenuated during 6-24 hours, and positive cells increased, of which macrophages were dominant. Infiltration of massive leucocyte neutrophils and a small quantity of mononuclear cells were detectable at 1 day; mononuclear cells increased during 2-4 days, and reached a peak at 3 days. In control group, the epidermis, folliculus pili, glandulae sebaceae and coil gland were all weakly positive. ②IL-1? and IL-1? were expressed at early phase after injury, and two expressing peaks were found at 6 and 72 hours, then decreased to normalized levels at 6 days after injury. CONCLUSION: Genet expression of IL-1? and IL-1? in damaged tissues has a regularity with wound time, and can be used for reference to estimate early injury age in forensic cases.

The tissue engineering technology that developed in the 1980s brings a hope for the regeneration of human organs. It is feasible to construct by-pass vessels, which have no immune resistance but are capable of anticoagulation. At present, a huge number of researches have provided the necessary basis for the construction. However, there are still some difficulties on the points of induction and proliferation of endothelial cells, development of new materials for scaffold and co-culture of seed cells in scaffold. These difficulties have become the bottle neck of tissue engineered blood vessels. The tissue engineering vessels are nowadays absent in clinical practice. With the progress in researches of tissue engineering, it is strongly believed that human organs and tissues can be constructed using tissue engineering technology, thus satisfying the donors of organ transplantation.

Objective To explore the key elements in prescription and summarize the law of prescription-herb treatment, to find core herbs/herb group which play a key role in pharmacological effects, then provide new methods and modern techniques for theory of prescription development and TCM clinical research. Methods The text data sources of stroke disease were retrieved from databases of traditonal Chinese prescription. After pre-processing and information extraction, a prescription-herb matrix was constructed, and then biclustering method was used to simultaneous clustering two dimensions of data. Results Totally 648 effective records were gained after preprocessing, and 6913 herbs were extracted, then a 100×648 prescription-herb matrix was generated. Finally 4-way clustering results were output, along with 8 high descriptive prescriptions, then characteristics of prescription laws of diagnosis and treatment according different syndrome and various types of herbs commonly used were summarized. Conclusion This method can be well applied for prescription-herb knowledge discovery in TCM prescription databases. The prescription-herb information can be effectively extracted, and laws of prescription-herb and syndrome-treament can be mined.

Animals ; Depression ; etiology ; metabolism ; Frontal Lobe ; metabolism ; Glutamic Acid ; metabolism ; Male ; Nitric Oxide ; metabolism ; Rats ; Rats, Sprague-Dawley ; Serotonin ; metabolism ; Stress, Physiological ; physiology ; Swimming

Objective To study the roles of protein kinase C (PKC) in the signal transduction pathway of LPS induced nuclear transcription factor (NF) ?B activation of alveolar macrophages(AMs). Methods NF ?B level in nuclear protein extraction of AMs was detected by sandwich ELISA. Intranuclear translocation of NF ?B was observed by immunocytochemical staining. Results LPS could induce NF ?B activation of AMs in time and dose dependent manners. Immunohistochemical staining revealed intranuclear translocation following LPS induction. Specific calphostin C (Cal C) and pyrrolidine dithiocarbamate (PDTC) could inhibit LPS induced NF ?B activation. Conclusion PKC, as a up stream messenger, is involved in the signal transduction pathway of LPS induced NF ?B activation.

Carcinoma, Papillary ; surgery ; Carotid Arteries ; surgery ; Diffusion of Innovation ; Humans ; Knowledge ; Laryngeal Neoplasms ; surgery ; Laryngectomy ; methods ; Reconstructive Surgical Procedures ; methods ; Surgical Flaps ; Thyroid Neoplasms ; surgery ; Thyroidectomy ; methods ; Voice Disorders ; etiology ; surgery