ABSTRACT
<p><b>OBJECTIVE</b>The aim of this study was to clarify whether the fusion of bone marrow mesenchymal stem cells (MSCs) with tumor cells can promote tumor angiogensis.</p><p><b>METHODS</b>Human glioma stem/progenitor cells (GSPCs) (SU3 cells) were transfected with red fluorescent protein (RFP) gene. Bone marrow mesenchymal stem cells (MSCs) were harvested from nude mice with whole-body green fluorescent protein (GFP) gene expression. Then the two kinds of cells were co-cultured in vitro. At the same time SU3-RFP was transplanted into the brain of GFP-expressing nude mice to establish xenograft tumors. The co-cultured cells, GFP/RFP double positive (yellow) cells and blood vessels obtained from the xenograft tumors were observed under fluorescent microscope and laser scanning confocal microscope.</p><p><b>RESULTS</b>After five passages in vitro, MSCs maintained the proliferative activity and highly expressed CD105. CD105 was also expressed in the femurs of GFP-expressing nude mice, tumor cells, blood vessels of SU3 xenograft tumors, and clinical malignant gliomas. When MSCs were co-cultured with SU3-RFP, the ratio of yellow cells co-expressing RFP and GFP was significantly increased after extended time and continuous passages. According to the flow cytometry, yellow cells co-expressing RFP and GFP were 83.7% of the cultured cells. In tissue slices of the xenograft tumors, bundles of yellow vessel-like structure and cross-sectioned yellow vascular wall structures including vascular wall stroma cells were observed with RFP and GFP expression, and were identified as de novo formed vessels derived from fusion of MSCs with SU3-RFP cells.</p><p><b>CONCLUSION</b>Cell fusion occurs between tumor cells and host MSCs and it promotes tumor angiogenesis.</p>
Subject(s)
Animals , Humans , Mice , Bone Marrow Cells , Physiology , Cell Communication , Cell Fusion , Cells, Cultured , Glioma , Green Fluorescent Proteins , Luminescent Proteins , Mesenchymal Stem Cells , Mice, Nude , Microscopy, Fluorescence , Neoplasms , Neovascularization, Pathologic , Stem Cells , Transfection , Transplantation, HeterologousABSTRACT
Objective To provide patients with clear understanding of their conditions and treatment plans,in order to solve the problems of asymmetric information and trust crisis between doctors and patients.Methods Three-dimension (3D)visualization doctor-patient communication platform for department of orthopedics was constructed.Dynamic display of anatomical structure of the joint,common diseases,treatment plans and surgical procedures was realized.Six functions were built into the platform including positioning,reset,paint brush,highlighting,screenshot and dual screen contrast,which were easy to be explained to the patients.Results The platform had the advantages of convenient operation,clear and visualized picture and lively animation effects of surgery simulation.Conclusions This platform enables the doctors and patients to communicate more conveniently,therefore significantly improve the doctor-patient relationship.
ABSTRACT
This study was aimed to review of the selection and use of the therapeutic effect assessment indexes of randomized controlled trials ( RCTs ) on traditional Chinese medicine ( TCM ) syndrome differentiation and treatment of chronic obstructive pulmonary disease ( COPD ) based on clinical efficacy . Published studies were searched in the CBM , CNKI , VIP , Wanfang database , Cochrane Library , PubMed and Embase to identity all RCTS on TCM treatment of COPD . Two researchers selected studies and extracted data independently using a designed extraction form . The Cochrane collaboration software RevMan 5 . 1 was used for meta-analysis . The re-sults showed that a total of 40 RCTs were included . Meta-analyses showed that TCM syndrome differentiation and treatment of COPD can improve the pulmonary function and life quality , improve the clinical effect and TCM syndrome effect , reduce the number of acute exacerbation of COPD and improve clinical symptoms . Some therapeutic effect assessment indexes , such as pulmonary function , life quality , clinical comprehensive effect , the number of acute exacerbation of COPD, clinical symptoms and signs, syndrome effect and the integral of syndrome were used more frequent . Other indexes such as 6-min walk distance , BODE Index and health eco-nomic evaluation were used less frequently . It was concluded that TCM syndrome differentiation and treatment of COPD had certain therapeutic efficacy. A large number of strictly-designed, multicenter, high-quality RCTs are required because of the low quality of the included studies. The selection of therapeutic effect assessment indexes is still not standardized . The therapeutic effect assessment indexes should be selected based on differ-ent purposes of clinical studies with the clinical characteristics of TCM .