Using a human activated B cell line 3D5 in immunization of mouse and as targets in screening, a hybridoma producing McAb 5C5 has been established. The antigen recognized by the McAb starts its expression on low dose anti-?-activated B cells at their G_1 phase at the 10th hour. The number of 5C5~+ cells increases with time. At the stimulation of PWM, the number of 5C5~+ cells in PBMNC also increases with time, and peaks on day 3 to 4, then docreases and comes to the background on day 7.5C5 antigen is positive on the B cell lines which can not be induced to differentiate to Ig-secre-ting cells (ISC), but negative on those being able to be driven to differentiate to ISC by BCDF. All the data indicate that 5C5 expresses at the early and mid stages, but disappears at the terminal stage of B cell activation and differentiation. 5C5 antigen does not expresses on resting B cells, resting T cells, PHA-activated T cells, monocytes, neutrophils, and the T cell and myeloid cell lines detected. Electrophoresis under both the nonreducing and reducing state for the ~(125)I-label led antigen immunoprecipi tated with McAb 5C5 shows a single band with a molecular weight of 52000, suggesting that 5C5 be a single chain cell surface protein. Since the MW of 5C5 is different from that of those B cell activation antigens reported in literature, and since ins specific expression on cell lines, 5C5 antigen might be a novel B eel I-restricted activation antigen.

Objective To study the effects of vascular endothelial growth factor(VEGF) in early stage diabetic retinopathy and their mechanisms,so as to guide the clinical work theoretically.Methods Thirty-six SD rats were randomly divided into four groups.Nine rats were used as normal controls(M Group).Streptozocin were injected intraperitoneally to induce diabetes for 1 month(M1 Group),2 months(M2 Group),and 3 months(M3 group).At the experimental ends of each group,the rats were over anesthetized and their eyeballs were extracted to make digest preparation.Immunofluorescence were used to investigate the expression of VEGF on retinal blood vessels.Transmission electromicroscopy was used to observe the histology of the retinal vessels.Results VEGF immunofluorescence showed an expression rate of 56% in M2 group and 89% in M3 group.Transmission electromicroscopy showed no change in M Group.However,it showed swelling of endothelial cells,finger like process into the capillary cavity,uneven distribution of heterochromatin in pericytes in M1 Group.Obvious fragmental thickening and splitting of basement membrane,swelling and deformation,finger like process to the capillary cavity,and concentration and margination of heterochromatin in endothelial cells,and swelling and deformation of rough surfaced endoplasmic reticulum and mitochondrion in pericytes were observed in M2 and M3 groups,especially in the latter.Conclusion The expression of VEGF proteins in the retinas of diabetic rats increases with the progression of diabetes.It proves that VEGF plays an important role in the occurrence and development of early diabetic retinopathy.

OBJECTIVE:To effectuate the pharmacy information communication with in the hospital.METHODS:The local area network concerning medicine information in the hospital was built by adopting FrontPage and Dreamweaver with the assists of Flash,Photoshop and Fireworks so as to provide services for the communication of pharmaceutical sciences informa-tion and the information collecting.RESULTS:The website on medicine information has been operating normally for11months and the visitors to which were more than5000person-time.CONCLUSION:Medicine information website has provided an active,healthy and an upward platform of communication and learning for all medical workers within the local area network of the hospital,which has make the gathering of clinical pharmacy information more promptly and effectively and which has achieve the expected effect.

Objective To observate the effects and reliability of azithromycin and ambroxol hydrochloride and glucose Injection in treatment of children with acute lower respiratory tract infection contraindicating to penicillin and cephalosporins. Methods 56 cases of children with acute lower respiratory tract infection for whom penicillin and cephalosporins were treated with azithromycin and ambroxol hydrochloride and glucose injection(group A) and other 100 cases without penicillin and cephalosporins contraindication were randomly divided into group B(treatment with cephalosporin) and group C (treatment with azithromycin). The clinical efficacy and adverse reactions of 3 groups after treatment in children were compared. Results In group A and group B, fever, cough, wheezing and other clinical symptoms, positive signs of the disappearance time of the lung were significantly shorter than those in the group C. The clinical efficacy of the two groups had significant difference as compared with group C (P0.05). Conclusion It is a good treatment with azithromycin and ambroxol hydrochloride and glucose injection to cure children cases with acute lower respiratory tract infection contraindicating to penicillin and cephalosporins, and it' s curative effect is equivalency with cephalosporin. It is worth to use this treatment in clinical practice.

BACKGROUND:Under certain conditions, stem cel s can be induced to differentiate into vascular endothelial cel s, which can promote the angiogenesis of ischemic lower limbs and the establishment of effective circulation and improve distal blood supply of the ischemic limbs. OBJECTIVE:To review the biological characteristics and pro-angiogenesis mechanism of umbilical cord mesenchymal stem cel s and to investigate the current status of umbilical cord mesenchymal stem cel s in the repair of neuropathy and chronic wounds. METHODS:PubMed, VIP and Wanfang databases were searched for relevant articles published from 2000 to 2015 using the keywords of“stem cel s transplantation, umbilical cord mesenchymal stem cel , diabetic angiopathies”in English and Chinese, respectively. RESULTS AND CONCLUSION:Compared with peripheral blood stem cel s and bone marrow mesenchymal stem cel s, umbilical cord mesenchymal stem cel s are characterized as more widespread sources, easy col ection, stronger amplification ability, no immunogenicity, and no ethical controversy, which have become ideal target and seed cel s for pro-angiogenesis and gene therapy in ischemic diseases. Umbilical cord mesenchymal stem cel s can differentiate into vascular endothelial cel s and fibroblasts involved in wound healing. In addition, these cel s can promote the production and expression of neurotrophic factors, promote nerve regeneration in ischemic tissues, and participate in tissue repair and accelerate healing of ulcers by paracrine and autocrine cytokines, anti-inflammation and immunomodulation. Therefore, umbilical cord mesenchymal stem cel s have a broad prospect in the improvement of diabetic lower limb ischemia, repair of diabetic peripheral neuropathy and promotion of chronic ulcer healing. Compared with stem cel transplantation alone, umbilical cord mesenchymal stem cel s transplantation combined with gene therapy can further enhance cel survival and pro-angiogenesis.

Based on the analysis of the status quo of computer teaching,the present paper discusses the reform of teaching contents in the computer education in our college.

Cancer has become clear that not merely gene variations but also epigenetic modifications may contribute to it. Epigenetic changes refer to stable alterations in gene expression with unrelated to changes in the underlying genetic sequence,resulting in heritable. DNA methylation is one of the common epigenetic changes. It control the gene expression through changing DNA conformation and stability, chromatin structer, DNA-protein interaction. The reversal of dysregulated DNA methylation has emerged as a potential strategy for the treatment of thyroid carcinoma. The artical will provide an overview of how DNA methylation contribute to thyroid carcinoma dissemination,invasion and metastasis and we will summarize the latest epigenetic therapies for thyroid carcinoma.
Chromatin ; DNA Methylation ; Epigenesis, Genetic ; Gene Expression ; Humans ; Neoplasm Metastasis ; Thyroid Neoplasms ; genetics

Objective:To explore the levels of serum adiponectin,insulin growth factor Ⅰ (IGF-Ⅰ) and prealbumin in preterm infants,and analyze their correlation with preterm EUGR infant.Methods:321 cases of preterm infants who were born in our hospital and transferred to neonatal department in 24 hours from January,2014 to January,2016 were enrolled in the present study.According to the weight at discharge,they were divided into the EUGR group and the non EUGR group,the growth and development as well as the levels of serum adiponectin,IGF-Ⅰ and PA in the two groups were compared.Results:The occurrence rate of EUGR was 55.76％ (179/321) in the 321 cases ofpreterm infants;the weight of EUGR group was significantly lower than that of the non EUGR group at 42 th days and three months after birth(p＜0.05).The SDS of both groups were all negative,and that of EUGR group was significantly lower than non EUGR group (p＜0.05).The levels of serum adiponectin,IGF-Ⅰ and PA of both groups were significantly lower than the control group at seventh days of birth,and the PA level of EUGR group was significantly lower than non EUGR group (p＜0.05).There was no significant difference in the serum adiponectin and PA levels between 7 days and 14 days in EUGR group (P ＞ 0.05),however,the serum adiponectin and PA levels in the non EUGR group was obviously increased and significantly higher than that of the EUGR group (p ＜ 0.05).The level of IGF-Ⅰ in both groups keep unchanged during two weeks (P＞0.05).Conclusion:The lower levels of serum adiponectin,IGF-Ⅰ and PA were closely related to the EUGR of preterm infants,which could be used as biochemical indexes to early diagnosis of EUGR.

Objective:To produce the mcAb specifically reacting with lung cancer and to purificate its antigen.Methods:The mice were immunized with A549, the mcAb 2B9 was screened by indirect cell ELISA and immunohistochemistry, and its antigen was purificated by immunoaffinity chromatography.Results:A mcAb was obtained, which could react to lung cancer but very little or not to normal lung tissue and other caner tissues, and the antigen of the mcAb was purificated from the cell lysate.Conclusion:A mcAb which can react to lung cancer have been obtained and its antigen was purificated, they may be useful on clinic for diagnosis and prognosis of lung cancer.

Objective To discuss the method, safety and selection of instrument in bone biopsy under digital radiography-guided. Methods Bone biopsy in 41 patients with bone lesion were performed under digital radiography-guided. Using the MDTECH super-core Ⅱ biopsy instrument, the MDTECH biopsy needle and osseous drill.Results The successful rate was 100% and the posilive rate was90.3%. None of them had severe complications. Conclusion Bone biopsy is a safe , accurate and effective method under digital radiography-guided.