Amplified in breast cancer 1 ( AIB1 ) plays an important role in the process of gene expression and regulation by combining with nuclear receptor.Aberrant expression of AIB1 has been detected in different types of caners,such as breast cancer,endometrial carcinoma,prostate cancer,esophageal squamous cell carcinoma,colorectal carcinoma,etc.The study of the potential role of AIB1 in the pathogenesis and prognosis will improve our general acknowledge of carcinogenesis.AIB1 may become a new prognostic marker as well as a new therapeutic target.

Objective To evaluate the formation of coronary collateral circulation with intracoronary Doppler ultrasound in pigs after acute occlusion and the influence of nitroglycerin and phentolamine on it.Methods The blood flow spectrun was detected in 14 pigs using intracoronary Doppler ultrasound before and after acute occlusion of the left circumflex artery (LCX) and its response to nitroglycerin and phentolamine.The average peak velocity (APV) and the diastolic systolic velocity ratio (DSVR) were recorded. Results The APV of the LCX decreased significantly at 10 min after acute occlusion (0.97?1.05 vs 25.78?4.36 cm/s,P0.05). Conclusion Intracoronary Doppler ultrasound can be used to evaluate coronary collateral circulation. The formation collateral circulation was insufficient after acute occlusion of coronary artery in pigs and nitroglycerin or phentolamine can improve the blood flow.

After introducing the predominance and status of remote maintenance,the paper lays emphasis on analyzing its application in medical equipment and problems to be solved in the development.Besides,the developing trend of remote maintenance is forecasted.Remote maintenance is one of the development directions for medical equipment maintenance support.

In the past few years,it has been disclosed that identified epigenetic processes and epigenetic changes are involved in human diseases.Disorders of these processes may influence chromatin structure and gene expression,which may result in complicated syndroms,multiple-factor diseases and cancers. The researchprogress of epigenetic processes of several diseases is reviewed in this paper.

HIFU treatment allows the destruction of a precise volume of tissue within an tumour without harming surrounding structures.The FEP-BY02 model is one of commercially available machines based on this technique,which is proved effectively in clinical practice.It's basic architecture,functional principle and some suggestions for safety use are introduced in this paper.

The rates of chronic obstructive pulmonary disease ( COPD) and lung cancer morbidity in Xuanwei city of Yunnan province are among the highest nationwide , and COPD is an major risk factor for lung cancer .The concur-rence of COPD and lung cancer is a common disease .There are common causative environmental risk factors and pathogenic processes between the two diseases , which provides new ideas for the research , prevention and treatment of both diseases .Additionally the discussion of the relationship between COPD and lung cancer can provide refer -ences for further studies of both diseases .

Objective To construct DNA vaccine containing MOMP gene of Chlamydia trachomatis and to observe immune response in mice. Methods Mice of 4 - 6 weeks old were immunized with pcDNA3.1-MOMP or pcDNA3.1 intramuscularly at a dose of 100 μg. Booster immunizations were employed at 2-week interval for two times. Specific antibody in the sera of mice and the level of IFN-γ in murine spleen lymphocyte supernatant were detected by ELISA. The proliferation response of spleen cells was detected by MTT assay. Results Significant specific antibody titers were observed and the highest titer was 1: 1 024 in mice after three times immunization with pcDNA3.1-MOMP. The proli-feration response of spleen cells were significantly higher than that of mice injected with pc DNA3.1. IFN-γ reached(532.0 + 45.4)pg/mL in immunized mice. Conclusion Strong responses of humoral and cellular immunity can be evoked by DNA vaccine of pcDNA3.1-MOMP in mice.

Objective To express outer membrane protein 2(Omp2) of Chlamydia trachomatis, purify expressed products and study its immunity.Methods The target gene encoding Omp2 167—434 amino acid residues was amplified by PCR from C. trachomatis template DNA. The targeted DNA fragment was cloned into expression vector pET28b(+) and introduced into competent E. coli BL21(DE3) cell. Recombinant Omp2aa_ 167 ～aa_ 434 was expressed after induction by IPTG and analyzed by SDS-PAGE and Western blot, purified with Ni-NTA-His affinity chromatography. The rOmp2aa_ 167 ～aa_ 434 was used to immune rabbits for immunogenicity assessment.Results Restriction enzymes cleavage analysis and DNA sequencing confirmed that the plasmid pET28b(+)/Omp2aa_ 167 ～aa_ 434 was correctly constructed. The 35.0?103 molecular weight pure protein, which specifically reacted with serum from C. trachomatis infected patient by Western blot, was obtained by optimizing the conditions for both expression and purification. The titer of serum antibodies was above 1∶1 280 as detected by ELISA.Conclusion The expressed product showed good immunity.

Objective To develop medical equipment management information system for medical engineering department. Methods Under PowerBuilder9.0/SQL and Server2000 development environment, the C/S mode system structure was adopted, and the system function modules, such as data input, browsing, querying, statistical analyzing, report generating, were designed. Results Data exchange between client and server was realized. Meanwhile, the designed function modules achieved normal operation. Conclusion The system structure and functions meet the requirements of working practice in medical engineering department.

AIM: The study aimed to verify the effects of arsenic trioxide in combination with aspirin on angiogenesis of human gastric cancer xenografts in nude mice. METHODS: Experiments were performed at the Laboratory of Pathology, Xuzhou Medical College from September 2006 to July 2007. A total of 36 male BALB/C-nu/nu nude mice aged 4-6 weeks, weighting 18-22 g were selected. Human gastric cancer cell strain SGC-7901 were purchased from Shanghai Institute of Biology of Chinese Academy of Sciences. Thirty-six nude mouse models of cell strain SGC-7901 lateral armpit subcutaneously transplantation tumor were established and randomized into a control group, a aspirin group, a arsenic trioxide group and a combination group with nine in each group. Seven days after inoculation, nude mice were intraperitoneally administrated with drugs. Nude mice in the control group were treated with sterile saline (0.2 mL/d); Mice in the aspirin group were administrated with aspirin 0.3 g/(kg?d); Mice in the arsenic trioxide group received 2.5 mg/(kg?d); Mice in the combination group were administrated with 2.5 mg/(kg?d)plus aspirin 0.3 g/(kg?d), successively for 14 days. Immunohistochemical method (SP kit) was used to detect the expression of cycloxygenase-2 (COX-2) and CD34, and count microvessel density (MVD). Western-blotting was used to detect the expression of IKK?, I?B, nuclear factor (NF)-?B and vascular endothelial growth factor (VEGF). RESULTS: A total of 27 male BALB/C-nu/nu nude mice were included in the final results. Seven days after inoculation, 1 mm tumor was formed on the back of 31 nude mice. One mouse respectively died in the arsenic trioxide group and the combination group. One mouse died and one loss in the aspirin group. Compared to the aspirin group, arsenic trioxide group and control group, expressions of IKK?, NF-?B and VEGF decreased in the combination group (P