Animals ; Breast Neoplasms ; diagnosis ; genetics ; DNA, Mitochondrial ; genetics ; Electron Transport Complex IV ; genetics ; Humans ; Loss of Heterozygosity ; Microsatellite Instability ; Mitochondrial Proteins ; genetics ; Mutation

Cardiomyopathy, Restrictive ; diagnosis ; surgery ; Diagnosis, Differential ; Humans ; Infant ; Male

Objective To study the different expression of complement receptors on neutrophils between bacterial and viral pneumonia. Methods Fifty-nine patients with CAP were studied prospectively. CR1 ,CR3 were measured by,using flow cytometer. ESR,CRP and WBC were also measured. Results Thirteen patients had pneumococcal pneumonia; 13 patients, A type of infuenza virus pneumonia ;5 patients, atypical pneumonia, and 28 patients, aetiologically undefined pneumonia. The mean expression of complement receptor 1 ( CR1 ) on neutrophils and aetiologically undefined pneumonia was( 19.4 ± 9.8 ) and ( 19.3 ± 8.8), which were significantly higher than those with A type of infuenza virus( t = 6.13,5.09 ,P < 0.01 ). Conclusion The expression of CR1 may be of value as an additional rapid tool in the aetiological diagnosis, bacterial or viral infection of CAP.

Objective To analyze the causes of peripherally inserted central catheter (PICC) relat-ed infections, study the types of pathogens and their drug sensitivities in order to supply evidence for clini-cal medication. Methods 110 cancer patients were analyzed for PICC related infections and blood sam-pies underwent bacterial culture. Results Of 110 cases of cancer patients, catheter-related infections were found in 11 patients (10.00%), including 9 cases of local infection (8.18%), and 2 cases of hemato-ge-nous infection (1.82%). Catheter-related infections were not associated with gender, age, types of catheter, venous selection, and the inserted length of intravenous catheter. Catheter- related infections were likely to be associated with the indwelling time of catheters. Conclusions To avoid the infections related to long-term PICC, strict aseptic operation and standardized maintaining procedures are required.

Objective To investigate the clinicopathologic and immunohistochemical characteristics of breast carcinosarcoma with osteosarcoma components and its differential diagnosis. Methods The pathologic features and clinical manifestations of the two patients were retrospectively reviewed. Immunohistochemistry was performed and the literature was reviewed. Results Histopathologically, the neoplasm consisted of invasive ductal carcinoma of no special type and poorly ( case 1 ) or well (case 2) differentiated osteosarcomatoid elements. The morphological transition from carcinoma to sarcomatoid elements was seen. Immunohistochemically,the carcinoma cells were positive for CK and EMA , the sarcomatoid elements were stained positive for vimentin, and a few cells of two elements were positive for S-100 protein. Ki-67 and VEGF were over expressed in both elements of Case 1.In case2 Ki-67 expression was low in both elements and VEGF over expression was only seen in sarcomatoid elements. Some of the carcinoma cells were positive for ER. Conclusions Carcinosarcoma of the breast with osteosarcomatoid elements is a rare type of mixed epithelial/mesenchymal metaplastic breast carcinoma. The types and proportion of carcinoma and sarcomatoid elements determine the diagnosis.

Objective To elucidate the role of human bone marrow stromal cells (hBMSC) in combination with exogenous cytokines such as stem cell factor(SCF) and FLT 3 ligand (FL) in supporting the in vitro expansion of CD 34 + cells purified from cord blood.Methods CD 34 + cells were isolated from umbilical cord blood by using a high gradient magnetic cell sorting system(MACS),expanded in combination with SCF,IL3 (interleukin 3),IL 6 (interleukin 6),FL,EPO (erythropoietin),and were planted onto the pre established irradiated (20Gy) stroma layer(hBMSC plus combinations of cytokines) respectively.On day 10,total cells were counted, and hematopoietic progenitor cells were assessed by semisolid culture assay,CD 34 + cells were quantitated by FACS.Results After separation by MACS,the frequency of CD 34 + cells was 92%?0.04%.On day 2,almost all the inoculated cells adhered to the stroma layer,with only a small number in the supernatant.Then,cells in the supernatant increased gradually, but the percentage of CD 34 + cells decreased.Compared with control, expansion fold of CD 34 + cells, CFU GM, BFU E were significantly higher in hBMSC group (P 0.5).Conclusion ① CD 34 + cells from cord blood formed foci adherent to the monolayer and colony forming cells remained in the culture of 10days,indicating that hBMSC can support hematopoiesis in vitro;②using human bone marrow stromal cells in cooperation with exogenous cytokines may be a feasible way to expand hematopoietic stem/progenitor cells.

The apoptosis was observed under a fluoroscope when the tested tumor cells were treated with the supernatant derived from the liquid culture of an actinomyces strain AK 11, which had showed cell toxicity by means of MTT assay, and was further confirmed by the correspondent band of ”DNA ladder” in the agarose gel electrophoresis. In a bioassay employed nude mouse, the pure compound produced by the strain AK 11 showed tumor inhibition in rates of 52.01% and 33.64% corresponding to the dosages of 0.016 ?g?kg -1 and 0.008 ?g?kg -1 ip, respectively. According to the indexes IC 50 of human hepatocarcinoma SMMC7721 and stomach cancer MGC 803 cells, it was estimated that the inhibition effect of the pure compound was slightly stronger than that of Adriamycin. The results showed high antitumor effect of the tested compound from the strain AK 11. When the cells were treated with AK 11, it was found by flow cytometry analysis that cell division was ceased at S phase due to the DNA synthesis block .

Objective To investigate the role of antisense RNA of plasminogen activator inhibitor 1 (PAI 1) in regulating the expression of PAI 1 and vascular endothelial growth factor (VEGF) in aorta endothelial cells (EC) cultured in vitro. Methods The second extron of PAI 1 was amplified by polymerase chain reaction(PCR) and the product was inserted into eukaryotic cell expression vector pcDNA3.1(-) to construct PAI 1 antisence RNA recombinant plasmid. The recombinant plasmid was transfected into EC and the PAI 1 expression was detected by immunohistochemistry, Westernblot and ELISA. The effects of PAI 1 variation on VEGF were examined by immunofluorescence method. Results PAI 1 antigen was the lowest (0 017 ng/ml) in cells and the immunofluorescence representing the expression of VEGF in the cytoplasm showed the weakest at the third day after transfection. At the fifth day, PAI 1 antigen increased to 0 093 ng/ml with VEGF expression increased correspondingly. At the seventh day, PAI 1 antigen(0 143 ng/ml) and VEGF increased closed to normal level. Conclusions PAI 1 antisense RNA blocked the translation of PAI 1 proteins effectively and inhibited the expression of VEGF in aorta endothelial cells.

Selenium, a metalloid mineral micronutrient,is an essential component for the adequate and healthy life of human, animals, and some other microorganisms.Selenium has antioxidative and oxidative effects on living organisms.Selenium deficiency has been associated with impaired function of the immune system.Selenium deficiency appears to enhance the virulence or progression of some viral infections.Selenium deficiency results in decreased activity of glutathione peroxidase, increasing oxidative damage and the likelihood of mutations in the viral genome.The safe range of selenium intake is relatively small and excess selenium intake can readily result in toxicity.This review summarizes the updates of benefitial and adverse effects of selenium on health.

Animals ; Heparin ; pharmacology ; Humans ; Ligands ; Lymphatic Metastasis ; Neoplasm Invasiveness ; Neoplasm Metastasis ; Neoplasms ; metabolism ; pathology ; Oligosaccharides ; metabolism ; Selectins ; metabolism ; physiology ; Signal Transduction