0.05).The dental plaque detactable rate of abutment teeth was higher than that of the controls(P

Objective　To study the efficiency of the treatment of experimental hepatocellular carcinoma in rats with arsenic trioxide and to elucidate the possible mechanism.Methods　Wistar rats were fed with diethylnitrosamine (DEN) to induce HCC, then treated with As2O3. The histological changes in liver tissue were observed under microscope, and the cellular dynamic parameters were studied by flow cytometry. Results　Treatment with As2O3 caused HCC cells death via both apoptotic and non-apoptotic mechanisms when the dose was high (5 mg/kg), the necrosis was seldom and apoptosis was common when the dose was appropriate (1 mg/kg). Proliferation index (PI) decreased sharply in high-dose (5 mg/kg) group (P＜0.01), but not in other two (1 mg/kg, 0.2 mg/jg) groups (P＞0.05). However, S phase fraction (SPF) decreased dramatically in all three groups (P＜0.01). Although apoptosis of HCC cells was common in all three groups, it reached the top only when the dose (1 mg/kg) was appropriate (P＜0.001), and it was obviously accompanied with accumulation of cells in G2/M (G2/M restriction). Conclusion　These date demonstrate that arsenic trioxide induces apoptosis of rat HCC cells, and it is closely associated with G2/M restriction when apoptosis reaches the top. The data also suggest that arsenic trioxide can inhibit cell proliferation, which is dose-dependent and time-dependent. The fact that continuous intermittent i.p. injection of arsenic trioxide can also be effective may afford a novel way to use the drug more safely.

Objective:To improve the medical equipment timely filing rate.Methods: Through the literature reference and practical work experience, based on the research of medical equipment archives management content, problems, solutions.Results: According to the comprehensive analysis of the literature in recent years is introduced and all levels of hospital medical equipment archives management and practice management work experience, summarizes the paper, summarized and further improve the management of medical equipment archives.Conclusion:To improve the timely filing rate, improve the utilization of archives, and find out the existing problems of hospital medical equipment archives management, the medical equipment archives play a major role in the practical work.

Objective To study the influence of RNA interference Caspase-3 gene on apoptosis of transformed human embryonic kidney 293 cells induced by cadmium in vitro. Methods Transformed human embryonic kidney 293 cell were treated with siRNA for 36 h. The treated cells were incubated with 40 ?mol/L CdCl2 for 12-24 h and the cells viability were measured with methyl thiazolyl tetrazolium(MTT) assay. In addition,the expression of caspase-3 gene in 293 cells was detected by the methods of reverse transcription polymerase chain reaction (RT-PCR) and Western-blot analysis,and the occurrence of apoptosis was determined by flowcytometry with Annexin-V and propidium iodide (PI) double labeling method. Results The results of RT-PCR and Western-blot analysis revealed that in incubated cells with 40 ?mol/L cadmium 12 h,the expression of Caspase-3 mRNA and 20 kDa protein significantly increased when compared with controls(n=4,P

0.05). Conclusion: The short-term clinical result indicates that resin-bonded CBW may be used as fixed prostheses to replace lost single anterior or premolar teeth with minimum preparation of abutment teeth. This restoration does not adversely influence the health of dental pulp and periodontal tissues.

Objective To explore the differentially expressed genes of gastric cancer,matched normal gastric tissue and premalignant lesions. Methods The differentially expressed cDNA bands were isolated and identified by fluorescent differential display and then reamplified by PCR.After being cloned,all cDNA fragments were sequenced. Through BLAST,the results were compared with GenBank database for homology analysis. The expression of the cDNA fragment in different tissues was confirmed by Northern blot. SMART-RACE(rapid amplication of cDNA ends) was used to amplify the full length cDNA sequence. Bioinformatics analysis was performed to analysis its function. Results A differentially expressed cDNA fragment expressed lower in gastric cancers and premalignant lesions,no homology was found in GenBank. The novel cDNA fragment was given an accession number of EST(CD454989)in GenBank. A full length cDNA sequence of 1362 bp was acquired,who coded 267 amino acids,and was homologous with BAA91562.1,whose physiology function was unknown. Conclusion A differentially expressed gene was found and it may be involved in process of the gastric cancer.

Objective To explore the diagnosis and of immune neutopenia.Methods Clinical data of 150 patients with immune neutropenia were collected and analyzed.Results Of 150 patients with immune neutropenia,35 cases went male(23.3％),115 cases were female(76.7％),and male to female ratio was 1 ∶ 3.3.Based on the difference produced way of granulocytes associated antibody,all patients could be divided into alloimmune neonatal neutropenia 9 cases (6.0％),drug-induced immune neutropenia 28 cases (18.7 ％),primary autoimmune neutropenia 22 cases(14.6％),and secondary autoimmune neutropenia 91 cases (60.7％).Secondary autoimmune neutropenia included 39 cases of systemic lupus erythematous,21 cases of rheumatoid arthritis,2 cases of immune hemolytic anemia accompany with neutropenia,6 cases of immune thrombocytopenia accompany with neutropenia,3 cases of autoimmune hepatitis,16 cases of autoimmune thyroiditis,and 4 cases of Sjogren's syndrome.Conclusion The majority of primary immune neutropenia are female,which is usually secondary to autoimmune diseases.The diagnosis of primary immune neutropenia is very complicated,which requires a long period of clinical observation and follow-up.The majority of granulocytes associated antibody is IgG in the autoimmune neutropenia patients.Yet sometimes two or three kinds of antibodies were increased as well.

Study was carried on pentobarbital anesthetized cats to investi-gate the effect of clonidine on arrhythmias induced by coronary occlusion. Clonidine 15???g/kg iv 15min prior to ligation of left anterior descending coronary artery significantly reduced the frequenecy of arrhythmias: the ventricular premature bats ( phase Ia, VPB from 80% in controls to 20%,P

Objective To study early face processing of mild cognitive impairment patients by using ERP method．Methods Sixteen healthy old man(normal group)and sixteen mild cognitive impairment patients(MCI group)served as subjects in experiment．Two runs of 300 stimuli(duration：50ms)of 3 facial and 3 non-facial pictures were randomly presented with equal probability(ISI：from 1000ms to 1500ms randomly)，and the subjects were asked to react to facial stimuli and non-facial stimuli by pressing the left button and risht button respectively as quickly as possible．Thirty-two channels electroencephalogram(EEG)Was recorded by Neuroscan Nuamps Systern．Results 1)Specific-face component N170 was found in both groups．Which was distributed at the temporal-occipital region．2)Compared with N170 in normal group，N170 amplitude Was significantly lower((-4．42±0．28)Μv vs(-7．00±0．28)Μv，F=41．52，P<0．01)at temporal-occipital region and delayed((158．91±2．17)ms vs(140．97±2．17)ms，F=34．09，P<0．01) in mild cognitive impairment group．Conclusion The early face processing mechanism of mild cognitive impairment patients may be different from normal people．

Objective: To observe the morphological changes of enteric deep muscular plexuses interstitial cells of Cajal (ICC-DMP) in rats with multiple organ dysfunction syndrome (MODS). Methods: Forty Wistar rats were randomly divided into control group and MODS model group. The enteric ICC-DMP network was observed using c-kit immunohistochemical staining with whole-mount preparation technique and confocal laser scanning microscopy , and the ultraslructural features of ICC-DMP was evaluated using transmission electron microscope. Results: Compared with those in control group, the distributions and densities of intestine ICC-DMP in MODS group were significantly decreased (P < 0. 05) , the ICC-DMP network was disrupted and the ultrastructural features of ICC-DMP were severely damaged. Conclusion: The ICC-DMP network was severely damaged in rats with MODS, and the mechanism of gastrointestinal dysmotility in MODS may be related to the morphological changes of ICC-DMP.