BACKGROUND:At present, exogenous basic fibroblast growth factor gene can be transfected into umbilical cord mesenchymal stem cells via a recombinant adeno-associated virus vector and exhibit sustained expression in transfected cells. This method can regulate cellproliferation and directed differentiation to obtain efficient long-lasting therapeutic effects.
OBJECTIVE:To investigate the effects of basic fibroblast growth factor gene transfection via a recombinant adeno-associated virus vector on the proliferation and cellcycle of human umbilical cord mesenchymal stem cells cultured in vitro.
METHODS:Human umbilical cord mesenchymal stem cells were cultured by the suspension culture in vitro, and were transfected by recombinant adeno-associated virus-mediated basic fibroblast growth factor gene. Cultured cells were divided into three groups:control group, basic fibroblast growth factor group, and recombinant adeno-associated virus group. Reverse transcription-PCR and western blot were used to assess the knockdown efficiency. cellular proliferation was determined by cellgrowth curve and cellCounting Kit-8 assay. The cellcycle was analyzed by flow cytometry.
RESULTS AND CONCLUSION:Compared with the other two groups, the expression of basic fibroblast growth factor mRNA and protein increased significantly, the cellgrowth speed was also significantly increased, the cellcycle of G0/G1 phase was decreased and cellnumber in S phase was increased in the basic fibroblast growth factor group after transfection. These findings suggest that the recombinant adeno-associated virus-mediated basic fibroblast growth factor gene can promote the proliferation of umbilical cord mesenchymal stem cells proliferation cultured in vitro, and also can optimize the cellculture.

Medical image registration plays an important role in the research of medical image processing field. It is widely used in the areas of clinical diagnoses, treatment, quality assurance and evaluation of curative effect. This paper gives an overview on three medical image registration methods Correlation method, mutual information method, and wavelet transform method. Features of these method and their applications are reviewed.

Objective: To correct the set-up error of patients during radiotherapy is very important for increasing treatment effective. Methods: This paper proposes a registration method based on portal images and reference images. Canny Operator was used to extract edge features. The extracted edge features were set as datum mark to calculate the maximal mutual information between the portal images and reference images. Parameters were optimized with simplex-simulated annealing optimization strategy. Results: The portal images and reference images of 29 patients with the cervix cancer and prostatic carcinoma were registrated in this paper. The results showed that the registration was precise, and the registration speed was increased remarkably. Conclusion: So this registration method can be applied for online estimation for set-up errors in clinical radiation.

Endogenous NO and CO have been identified in the recent years as signaling molecules and act as the messengers in the body . Both of them have identical characteristics in the mechanism of production and action. Many evidences indicated that NO and CO play important roles in physiological and pathophysiological processes in the prostate. This review highlights the current ideas on localization and function of them in the prostate. We also discussed the relationship between the gaseous messengers and the prostatic diseases.

Recent reports have indicated that NK cells may have the function of immunological memory in common with cells of the adaptive immune system."Memory" NK cells move through the four phases of the adaptive immune response — proliferation,contraction,memory and recall which was similar to the T-cell responses."Memory" NK cells have special phenotypes.During MCMV infection,"memory" NK cells showed a greater expression of Ly49H,KLRG1,CD43 and Ly6C,and a decreased expression of CD27.In hapten (DNFB)-induced contact hypersensitivity model,the sorted liver NK cell subsets with the phenotype of Thy-1+Ly49C-I+ had the transferable memory activity,occupying around 10% of hepaedtic NK cells.These Ly49H+"memory" NK cells might produce more IFN-gamma ex vivo in response to plate-bound antibody against NK1.1 or Ly49H.Degranulation by Ly49H+ "memory" NK cells was also enhanced,as assessed by CD107a expression after ex vivo stimulation with anti-NK1.1."Memory" NK cells may move through the same migratory routes and adhesion pathways during the priming and effector phases of DNFB-primed Rag2-/-mice as conventional T cells of normal mice.Until now,it is not clear about the requirements for the triggering,regulation and maintenance of NK cell memory,but it is absolutely clear that "Memory" NK cells must play important role in host defense against pathogens.

Objective To introduce the important anti-bioterrorism exercises in some countries and to find out what we can learn from those exercises, then to service our country on the preparation of anti-bioterrorism exercise. Methods The introductions and reports concerning anti-bioterrorism exercises in some countries were searched from internet and papers, then the data were analyzed and summarized, some commonness were drown out. Results Some developed countries pay attention to anti-bioterrorism exercise. Some problems and countermoves can be found by those exercises. Conclusions Our country is also facing the threat of bioterrorism. Improving the biodefence ability is a challenge to our country. Our country has done some exercise, but biodefence exercise is few. Our country needs to develop some anti-bioterrorism measures in which we need focus on: decision-making process, cooperation, international collaboration, communication, disease control and prevention, medical treatment, drug and vaccine preparation.

Objective To investigate the effect of finger exercises on recovery of hand function and daily life ability in postoperative patients with bone trauma. Methods Ninety-eight phalanx trauma patients were equally divided into the treatment and control groups, those with odd admission number in the treatment group and those with even numbers in the control group: the control group was given postoperative routine care and the treatment group took finger exercises besides the routine nursing. The two groups were compared in terms of the treatment effect and the ability of daily life . Result The effective rate of the treatment group was higher than that of the control group and the ability of daily life was significantly better than that of the control group (all P < 0.05). Conclusion The postoperative finger exercises of the patients with bone trauma can increase the recovery of hand function , which is beneficial for the improvement their daily life ability.

Objective: To discuss the effect of early enteral nutrition support on immunological function in patients with acute stroke. Methods: Forty-nine stroke patients with dysphagia were randomly allocated into study group (n = 24) and control group (n = 25). They were received enteral nutrition via nasogastric tube and ordinary nasal feeding of liguid diet, respectively within 72 hours after admission. The levels of total lymphocyte count (TLC), immune globulin A (IgA), immune globulin G (IgG), immune globulin M (IgM), complement 3 (C3), and complement 4 (C4) in both groups were detected on day 1, 7 and 21 respectively after admission. The changes of nutritional index and the incidence of infective complications were observed. Results: The levels of TLC [(2.1 ± 0.4) × 109/L], IgA [(2.7 ± 0.5) g/L], IgG [(11.1 ± 2.2) g/L], IgM [(1.7 ± 0.7) g/L], and C3 [(1.2 ± 0.2) g/L] in the study group were significantly higher than the levels of TLC (1.7 ± 0.4 × 109/L, P < 0.05), IgA [(2.0 ± 0.4) g/L, P < 0.01], IgG [(8.9 ± 2.5) g/L, P < 0.01], IgM [(1.3 ± 0.6) g/L, P < 0.05], and C3 [(1.0 ± 0.3) g/L, P < 0.01] in the control group after 21 days. The incidence of infective complications in the study group (29.1%) was significantly lower than that in the control group (60.0%; P < 0.05). The nutritive index of the study group was also significantly better than that in the control group. Conclusion: Early enteral nutrition support may improve the immunological function in patients with acute stroke, and decrease the incidence of infective complications.

Objective To compare the prognosis and life quality of patients with early-stage breast cancer(stage I or II)undergoing breast-conserving surgery or modified radical mastectomy.Methods 180 cases with early-stage breast cancer were divided into 2 groups:breast-conserving surgery group(BCS)and modified radical mastcctomy group(MRM),with 90 cases in each group.The 2 groups were all given radiotherapy,chemotherapy and endocrine therapy according to indications.The prognosis and life quality in the 2 groups were compared.Results The 5-year-postoperative follow-up showed there was no significant difference in duration of disease-free survival(DFS)of the 2 groups.However,life quality of BCS patients was significantly better than that of MRM patients in terms of general health,physical function,pain,vitality,social functioning,emotion and mental health.Conclusion Breast-conserving surgery is highly recommended for patients with early-stage breast cancer.

Snake antivenomimmunoglobulins are considered to be the most efficient drugs in snake envenomings. Most snake antivenomimmunoglobulins all over the world are still prepared by fragmentation of polyclonal antibodies isolated from hyper-immunized horse serum till now. In this review, we retrospect the history of snake antivenomimmunoglobulins, analysis the present situation and pay the close attention on the key technological links in the process of research and manufacturing, such as properties of IgG and its fragments, selection and preparation of immunogen, optimization of immunization schedule and protein isolation and purification, which can be available for the reference in the research and development of snake antivenom.
Animals ; Antivenins ; pharmacology ; Humans ; Immunoglobulin G ; pharmacology ; Snake Bites ; drug therapy ; Snakes