Objective To investigate the change of E-cadherin expression in human skin after cryopreservation. Methods The skin tissue was treated with DMSO-propyleneglycol (TD group) and trehalose-DMSO (DP group), respectively, and cryopreserved in liquid nitrogen (-196 ℃) for 7 and 14 days and the changes after cryopreservation were compared with that of fresh skin (control group). Immunohistochemical staining was used to detect the expression of E-cadherin in the skin.Results Compared with the fresh skin, TD group showed good preservation of the skin, and the expression level of E-cadherin was similar to that in the control group. Conclusion E-cadherin is well preserved in the TD group. Therefore, trehalose-DMSO is an effective cryoprotectant for human skin, and much better than that of traditional low-temperature protectants.

Antibiotics, Antineoplastic ; pharmacology ; Apoptosis ; drug effects ; Breast Neoplasms ; metabolism ; pathology ; Cell Line, Tumor ; Cell Proliferation ; drug effects ; Down-Regulation ; Doxorubicin ; pharmacology ; Female ; Humans ; Oligonucleotides, Antisense ; pharmacology ; Phosphoproteins ; metabolism ; RNA-Binding Proteins ; metabolism ; Random Allocation

Objective To observe DAT1 expression in neural stem cells (NSCs) and the effects of DAT1 on the differentiation of NSCs. Methods Eukaryotic expression vectors pEGFP-C1-DAT1 and pcDNA4/hisA-DAT1 were constructed and transfected into NSCs of rat cerebellum by lipofectamine2000. The transfected NSCs were observed by immunohistochemistry under fluorescent microscope. Results The overexpression of DAT1 could increase the number of Mash-1 staining cells and promote the NSCs to differentiate into neuron progenitors, and the high levels of DAT1 in NSCs facilitated the differentiation of neurons. The localizations of DAT1 protein in Mash-1 staining cells and NF 200 staining cells changed. This shift may result from the two distinct inducing factors, FBS and nature differentiation, or distinct stages in differentiation of NSCs. Conclusion DAT1 functions in differentiation of NSCs as a multiprotein combined with distinct transcription factors by virtue of different inducer or varied stage of differentiation.

Objective To study the characters of using the high pressure injector in the contrast CT scanning for children. Methods Summarized the nursing measures of 407 children who had accepted the contrast CT scanning. Results There were 369 children have obtained perfect effects of CT scanning, 35 children have obtained general effects and there were 2 children failure. Conclusion The method of using high pressure injector in the contrast CT scanning for children is convenient, safety and effective.

Objective To investigate the factors that induce constipation in bedridden patients undergoing replantation of severed finger and find countermeasures. Methods A retrospective investigation was carried out in 92 patients undergoing replantation of severed finger, their constipation and factors influencing constipation were recorded. Results 61 patients suffered from constipation in total 92 cases,the rate being 66.30%. 76 patients reduced food intake, and 59 cases presented constipation (the rate being 77.63%). Factors influencing constipation included being unaccustomed to defecate in bed (the rate that present with constipation being 87.09%),reluctant to trouble others(75.47%), side effects of drugs(55.56%) and lack of dietary knowledge (71.87%), decreasing food intake was closely bound up with constipation. Conclusions Proper psychological counseling, strengthening of health propaganda, comfortable facility for defecation, improved family support and oral food intake can significantly reduce the proportion of constipation and increase comfort degree of patients.

Objective To investigate the effect of astragalus polysaccharides (APS) on the differentiation of rat bone marrow mesenchymal stem cells (BMSCs) to neurones, adipocytes, osteoblasts and chondrocytes, and provide basis for the development of effective and low toxic differentiation inducing agents. Methods BMSCs were isolated from SPF Wistar rats, purified, expanded and cultured to family 3. The appropriate concentration of APS was filtered out by MTT assay. The F3 cells were randomly divided into control group and induced group (neural induction, adipogenic induction, osteogenic induction, cartilage induction). The effects of APS and classical chemical drugs on differentiation were measured by toluidine blue, oil red o and alizarin red staining. The protein expression of NSE, LPL, collagen Ⅰ and collagen Ⅱ were examined by Western Blot. Results MTT assay showed that 1 g/L APS promoted the proliferation better than other concentrations especially in 48 hours. The morphologic change of the cell from BMSCs was uniformly positive to toluidine blue staining, and was negative to oil red o and alizarin red staining. Western blot showed that the protein expression of the cell from BMSCs was positive for NSE but negative for LPL, collagen Ⅰ and collagen Ⅱ. Conclusion BMSCs induced by APS can differentiate to neurone and fail to differentiate to adipocytes, osteoblasts and chondrocytes in vitro.

Child ; Endocarditis, Bacterial ; Female ; Follow-Up Studies ; Heart Neoplasms ; microbiology ; pathology ; surgery ; Humans ; Mitral Valve ; Myxoma ; microbiology ; pathology ; surgery ; Neisseria lactamica ; Neisseriaceae Infections

Antigens ; analysis ; Autoantigens ; analysis ; Breast Neoplasms ; metabolism ; Citrates ; Female ; Formaldehyde ; Hot Temperature ; Humans ; Hydrogen-Ion Concentration ; Immunohistochemistry ; methods ; Iodide Peroxidase ; analysis ; Iron-Binding Proteins ; analysis ; Paraffin Embedding ; Receptors, Progesterone ; analysis ; Thyroid Gland ; immunology ; Tissue Fixation

Animals ; Chemistry Techniques, Analytical ; methods ; Food Analysis ; Humans ; Pharmaceutical Preparations ; analysis

Antigens ; analysis ; Cervical Intraepithelial Neoplasia ; metabolism ; Citric Acid ; Cyclin-Dependent Kinase Inhibitor p21 ; analysis ; Edetic Acid ; Formaldehyde ; Hot Temperature ; Humans ; Hydrogen-Ion Concentration ; Immunohistochemistry ; Intestinal Mucosa ; immunology ; Ki-67 Antigen ; analysis ; Microwaves ; Palatine Tonsil ; metabolism ; Proto-Oncogene Proteins c-bcl-6 ; analysis