Objective:To use defibrillators calibration detection method, some problems could be find out and analyzed. Moreover, the quality safety of defibrillators calibration can be guaranteed. Methods:According to WSB 64-2003 verification regulation for cardiac defibrillators and cardiac defibrillator-Monitors, and the practical experience of effective detection methods, defibrillation analyzer verification can be used to detect the performance parameters of cardiac defibrillators. Results:In accordance with the effective test method, through regular check, not only can cardiac defibrillators risk be eliminated but also quality safety of clinical use and the life safety of patients will be safeguarded. Conclusion:The quality control can prevent medical accidents that caused by facility loses, at the same time, if we are pay attention to the daily maintenance, the defibrillator can be played a role in emergency time.

Daxx is found in the nucleus where it localizes to PML oncogenic domains (PODs). Its multiple domains can interact proteins involved in transcriptional regulation and apoptotic signal transduction. In addition, Daxx is associated with viral infection、tumorigenesis and embryonic development.

To explore the correlation between the C807T polymorphism of platelet membrane glycoprotein I a (GP I a) gene and aspirin resistance in Chinese people, 200 patients with high-risk of atherosclerosis took aspirin (100 mg/d) for 7 days. Platelet aggregation function was detected using adenosine diphosphate (ADP) and arachidonic acid (AA) before and after the administration of aspirin. Then the subjects were divided into three groups according to the results of platelet aggregation function: an aspirin resistant (AR) group, an aspirin semi-responder (ASR) group and an aspirin-sensitive (AS) group. Platelet GP I a gene 807CT polymorphism was examined by means of polymerase chain reaction-sequence specific primers (PCR-SSP). The results showed that T allelic frequency in AR group and ASR group were higher that of AS group (P<0.005), and the prevalence of genotypes (TT+TC) of these two groups was significantly higher than that in AS group (P<0.05). Platelet GP I a T allele was significantly associated with aspirin resistance as revealed by multiple logistic regression (OR=3.76, 95% CI: 2.87-9.58). The results suggest that inherited platelet GP I a variations may have an important impact on aspirin resistance and the presence of GP I a T allele may be a marker of genetic susceptibility to aspirin resistance.
Aspirin/*administration & dosage ; Atherosclerosis/drug therapy ; Atherosclerosis/genetics ; Drug Resistance/*genetics ; Integrin alpha2/*genetics ; Platelet Aggregation Inhibitors/*administration & dosage ; Polymorphism, Genetic/*genetics

Huoxue Tongmai Lishui method, a traditional Chinese medicine treatment for eliminating water, activating and promoting blood circulation, could inhibit fundus hemorrhage on experimental retinal vein occlusion (RVO) with high obvious effective rate, and improve symptoms in traditional Chinese medicine. The action mechanism may be related to reducing plasma viscosity and non-perfusion area, and the formation of collateral circulation.

As a part of modern medical practice,medical treatment facility(MTF) has playing an important role in disease diagnosis and medical treatment;therefore,nowadays more attention is paid to the medical equipment management.The methods of equipment management which combine actuality and practical experience are introduced in order to make the management of medical equipment more scientific and effective.

Objective To study the effect of Na-2SeO-3 on experimental carcinogenesis of stomach and on p53 and p16 expression. Methods Weaning male Wistar rats were divided into four groups randomly:high selenium group(4mg/L),low selenium(2mg/L)group,experiment control group and normal control group.Wistar rat gastric cancer was induced by N-methyl-N′-nitro-N-nitrosoguanidine(MNNG,20mg/kg)given daily for 10days.Na 2SeO 3 was given by piped drinking before one week of MNNG administration.Rats were killed at the 43th week.The surface characters of gastric mucosa were observed with noked eyes.Histopathologic changes were observed by methods of HE staining and Alcian Blue Periodic acid Schiff reaction(AB-PAS).Changes of p53 and p16 were detected by SP immunohistochemical method.The immunohistochemical results were quantitatively analysed by image analysis.Statistical analysis was taken by SPSS. Results Dietary Na-2SeO-3(2mg/L,4mg/L)aggravated gastric erosion and hemorrhage and promoted intestinal metaphasia of gastric cancer (P0.05).Conclusion These results suggest that dietary Na-2SeO-3 by piped drinking might not decrease incidence of Wistar rat gastric cancer induced by MNNG.The mechanism may be associated with the mutations of p53 and abnormal expression of p16 gene.

Objective:To construct recombinant adenovirus vector Ad5-CCL20,and detect the expression of CCL20 after Ad5-CCL20 transfected colon cancer cells CT-26.Methods:Genes encoding CCL20 was obtained from original plasmid double-digested with EcoR I/Sal I enzymes.The CCL20 DNA segments were linked into pDC316 to recombine shuttle plasmid pDC316-CCL20.After genome sequencing,we take shuttle plasmid pDC316-CCL20 and plasmid backbone pBHGIox_E1,3Cre co-transfecting 293T cells in mediation of liposome.The constructed recombinant adenovirus vector was named Ad5-CCL20.Lastly,after Ad5-CCL20 transfected CT-26 cells in vitro,the expression of CCL20 at different time points (12h,24h,36h and48h)was detected by Western blot and Elisa.Then,Culture supernatant was added into iDC and mDC to evaluate the chemotactic activity of CCL20.Results:The recombinant adenovirus Ad5-CCL20 were successfully constructed.The expression of CCL20 was detected by Western blot and Elisa.The level of CCL20 expression was increased with prolonged incubation of the infected CT-26 cells.Chemotaxis experiments show that the chemokine CCL20 had chemotactic activity to the iDC and mDC,but more obviouly for iDC (P＜0.05).Conclusion:The construction and obtain of recombinant adenovirus vector Ad5-CCL20 provide a new method for developing tumor immunotherapy.

To analyze and study the influences of temperature and humidity to the medical equipments, and indicate the problem and strategy of the medical equipment in the operation. To give some references in installation and maintenance of facilities.

Objective To understand and to grasp the basic situation on blood donors who were ineligible by ALT dry chemistry testing before blood donation.Methods The ALT rejection ratios used in initial screening and not used in two blood collection point were compared at the same time.The relativity between the dry chemistry testing and rate method were compared.An association was explored in various influencing factors on the activity of ALT.Results The use of ALT initial screening in blood donation had a significantly lower unqualified rate than not using it in early screening (P＜0.05).Dry chemical,biological method and the results had good correlation rates (r=0.993,P＜0.05).The B MI,drinking,sleeping,sports,diabetes,liver disease were independent factors affecting ALT activity (P＜0.05).Conclusion ALT initial screening can significantly reduce the unqualified rates and disposal of blood.

Objective The bidirectional cavopulmonary shunt (BCPS) is a major step in the staged palliation of functionally univentricular heart defects.Whether to preserve of additional pulmonary blood flow (APBF) has been a highly controversial issue.The purpose is to mathematical model and set out to determine the significa advantages and disadvantages of bidirectional cavopulmonary shunt with additional pulmonary blood flow:a theoretical analysis nce of APBF and the appropriate APBF ratio.Methods We used models of the univentricular circulation after the bidirectional cavopulmonary anastomosis with additional pulmonary blood and to computational analyze the impact of APBF on oxygen delivery,APBF flow on the CVP and SaO2.Results The influence of APBF depends on the ratio of superior vena cava flow to inferior vena cava flow ( QSVC/QIVC ).For QSVC/QIVC ＞ 0.3,APBF may be associated with decreased oxygen delivery.For QSVC/QIVC ＜ 0.3,appropriate APBF may be associated with increased oxygen delivery.A linear relationship exists between the increase of APBF and CVP,and the slope was depended on the value of pulmonary vascular resistance.Estimating APBF from CVP measurements may be a feasible method.A nonlinear relationship between the increase of APBF and oxygen saturation,and estimating APBF from SaO2 measurements may result in errors.BCPS and appropriate APBF may optimal the oxygen delivery with the increase of age and the decrease in QSVC/QIVC.For patients who accepted BCPS without APBF,there is a decreasing tendency of oxygen delivery with the increase of age and the decrease in QSVC/QIVC.For patients who suffered pulmonary arterivenous malformation,there is a more obvious decrease in oxygen delivery.ConclusionFor patients under age who has normal pulmonary vascularbed ( that is,QSVC/QVC ＞ 0.3),elimination of additional pulmonary blood flow can improve the oxygen delivery under a given cardiac output.For patients who with hypoplastic pulmonary vascular or in older patients under age,APBF is necessary to improve oxygen delivery.For patients who have to accept BCPS as the final procedure,preserving of APBF is suggested.