In recent years,the prognosis and survival quality of tumour patient would be improved greatly through cell immunotherapy,which becomes the priority scientific research.Immunoeytes can kill the tumour cell directly or through immunoregulation.CD4CD8 double-negative T cells is a newly found subset of T cells whose SUlface express neither CD4 nor CD8.This article mainly introduces the advancement of one subet of DNT cell,DN Tregs,in tumor.

Objective To investigate the clinical characteristics of nosocomial infections in senile inpatients(≥75 years old) and to propose the control strategy according to the analysis. Methods A total of 2675 senile inpatients(≥75 years old) from 2007 to 2008 were prospectively evaluated and retrospectively reviewed. The infection incidence rate, infection fatality rate, average length of stay in hospitals, location of infections, main pathogenic bacteria and common protopathy were analyzed. Results Among 2675 senile inpatients, 222 senile inpatients suffered from nosocomial infection. Among all age groups in this hospital during the same period, the infection incidence rate and the infection fatality rate were higher in the senile group than in the general group(8.3% vs. 1.9%, 0.8% vs. 0.1%,both P<0.01). The average length of stay in our hospital was 54.0 days. The lower respiratory tract infections were most common, and the urinary system infections, and the blood infections. Gram-negative bacteria was the major source of nosocomial infection(47.0%, 110/234), while infection rate of Gram-positive bacteria was 32.9% (77/234) and fungus was 20.1% (47/234). The cerebral vascular disease was the most common protopathy, then malignant tumor was in 45 cases (20.3%), kidney disease was in 31 cases(14.0%), cardiac disease was in 29 cases(13.1%) and respiratory disease was in 21 cases(9.5%). Conclusions There are higher infection incidence rate, higher infection fatality rates,longer length of stay in hospitals in senile inpatients(≥75 years old). The lower respiratory tract infections were most common and Gram-negative bacteria was the major source of nosocomial infection. We should adopt active management to control the nosocomial infections.

OBJECTIVE To understand the effect of the cleaning and disinfection of gastroscopes to prevent hospital infection.METHODS The biological monitoring of the gastroscopes from Jan 2007 to Dec 2007 was performed in a retrospective way.RESULTS Before implementation of the Technology Specifications of Cleaning and Disinfection of Endoscopes,the pass rate of the bacterial culture was 71.4%.After tmplementation strictly accordance with the norms after the implementation the qualified rate was 100.0%.CONCLUSIONS Equipped with the necessary cleaning and disinfection equipment,the standard procedures can prevent hospital infection.

Coronary heart disease has become a major threat of human health, and its incidence rate remains surprisingly high.In recent years, technology on its diagnosis and treatment has developed greatly.The present article made a review on related new diagnosis and treatment so as to provide reference for clinical diagnosis and treatment of coronary heart disease.

The incidence of high myopia has increased yearly, which has been an area of focus for investigation. The complications of high myopia are contributing factors to blindness,such as posterior staphyloma, chorio-retinal atrophy, choroidal neovascularization, optic nerve head and macular defects. The study of histological changes helps clarify the mechanism. With the development of modern technology such as spectral-domain optical coherence tomography and enhanced depth imaging-technique, histological changes in high myopia can be measured accurately. The purpose of this review is to provide an update on various pathologic changes, including in sclera, Choroid/Bruch's membrane, optic nerve, vitreous and retina.

Objective To observe the expression level of stromal cell-derived factor-1 (SDF-1) in bone marrow stromal cells of acute leukemia at initial diagnosis and complete remission. Method Bone marrow stromal cells were isolated and cultured from five patients of acute leukemia at the time of initial diagnosis (Group A), five patients of acute leukemia at complete remission (Group B), and five healthy individuals or persons with no serious hematopathy (Group C). The content of SDF-1 protein in cultured supernatants was determined with enzyme-linked immunosorbent assay (ELISA). Results The contents of SDF-1 protein in supernatants of groups A, B and C were 2 941?374, 2 891?305 and 1 583?157pg/ml, respectively. The contents in both group A and group B were significantly higher than that in group C. Conclusion The SDF-1 expression level in acute leukemia bone marrow stromal cells was elevated at initial diagnosis, and the abnormality persisted until the stage of complete remission.

Objective To explore the basic health state of the hotels in Haidian District. Methods 736 hotels were chosen to investigate on the hygiene state, in Haidian District, Beijing, during Feb.-Jul., 2006, based on the tables for the hygienic quantified and classified management of hotel health supervision. Results The hygienic quantified and classified standard score of 736 hotels was 53.7?22.6, and the standard score of the common hotels, one or two stars hotels and three or more stars hotel were 50.9?21.5, 58.9?24.7, 76.4?17.1. 50 households (6.8%) within them were A degree, 144 households (19.6%) were B degreee, 121 households(16.4%) were C degree and 421 households(57.2%) were D degree. Conclusion The general hygienic state of the hotels should be paid more attention to. The hygienic state changes with the level of the hotels.

0.05).Conclusion Immunization with HBV gene vaccines plus HBsAg protein has no better immune responses.

Objective]This paper is for the theoretical formation of clear livering factors development process . [Method]Adopt the method of literature investigation, explore the meaning of liver governing smoothing and dispersing Qi. [Result]It has three meanings: Like smooth doesn't like depression;dredge(The ascending and descending of Qi);spread. The support theory behind it is:Five elements theory;The movement theory of Qi;Zhu Zhenheng ’ s theory of“Liver Governs Smoothing and Dispersing”. Relationships between three meanings and support theory is:With five elements theory explaining the function of the liver governing smoothing and dispersing Qi ,it eventual y uses the movement theory of Qi; With Zhu Zhenheng ’s theory of“Liver Governs Smoothing and Dispersing”, explain the function of the liver governing smoothing and dispersing Qi is different from the the movement theory of Qi. [Conclusion]Liver governing smoothing and dispersing Qi is a new theory of reconstruction by modern scientific theories and methods.

Objective To study the optimal dose and reaction time of human leukocyte antigen B27(HLA‐B27)antibody in flow cytometry .Methods Take 52 cases of whole blood in patients with ankyl‐osing spondylitis(AS) .According to HLA‐B27 antibody doses ,samples were divided into two groups:5 μL group and 10 μL group .HLA‐B27‐positive rate were tested after 5 ,10 ,15 min , respectively .Results The HLA‐B27 positive rate of 5 μL group at different reaction time were (84 .16 ± 1 .21)% ,(94 .81 ± 1 .33)% ,(94 .10 ± 1 .26)% ;the positive rate of 10 μL group at different reaction time were (85 .40 ± 1 .27)% ,(96 .76 ± 1 .31)% , (95 .36 ± 1 .45)% .The positive rate of HLA‐B27 in 10 μL group was higher than 10 μL group(F=90 .08 ,P<0 .05) .The positive rate of HLA‐B27 after reacting for 10 and 15 min were higher than that after reacting for 5 min(F=60 .25 ,P<0 .05) .There was not statistically significantly different between the reaction time of 10 min and 15 min(F=1 .08 ,P>0 .05) .Conclusion The opti‐mal dose and reaction time of HLA‐B27 antibody in flow cytometry are 10μL and 10 min;There is not any interaction between anti‐body dose and the reaction time of HLA‐B27 antibody .