1.Predictors for sever Guillain-Barré syndrome
Chunge XIE ; Limin WANG ; Xuetao HE ; Jieling CHEN
Chinese Journal of Nervous and Mental Diseases 2016;42(8):484-487
Objectives To explore different factors (clinical presentations and laboratory investigations ) between the severe and mild Guillain-Barré syndrome (GBS) in southeast China ,and to find the predictors of severe GBS. Meth?ods Retrospective analysis was conducted on 101 cases of patients with GBS admitted to our Hospital from Jan. 2006 to Nov. 2015, who were divided into mild and severe groups according to Hughes scale. The different factors were compared between these two groups such as age, sex, precursor infection factors, the initial symptoms, bulbar dysfunction, cranial nerves involvement, autonomic nervous dysfunction, peripheral nerve axonal damage to find the predictors for the severe GBS. Results Severe GBS more frequently presented with non-paresthesia as initial symptom (P<0.001) , bulbar dysfunc?tion (P<0.001), cranial nerves involvement (P=0.025), autonomic nervous dysfunction (P=0.018), motion system involve?ment (P = 0.004) and peripheral nerve axonal damage (P<0.001). After multivariable logistic regression analysis, we found that the axon damage(P=0.008, OR=4.632), bulbar dysfunction(P=0.010, OR=10.420), and cranial nerves in?volvement(P=0.047, OR=0.076)were the independent risk factors for sever GBS. Conclusion Axon damage, bulbar dys?function, and cranial nerves involvement might be significant predictors of sever GBS.
2.Comparative study between off-pump and on-pump of coronary artery bypass grafting
Xu CAO ; Qiang XIE ; Ming JING ; Meng LI ; Xuetao BAI ; Hongwei JIANG
Chinese Journal of Postgraduates of Medicine 2010;33(2):9-10
Objective To compare the clinical effect of off-pump coronary artery bypass grafting (eft-pump CABG)and on-pump coronary artery bypass grafting(on-pump CABG).Methods The clinical dates of 152 cases with coronary artery bypass grafting(off-pump CABG group 85 cases,on-pump CABG group 67 cases)were received from June 2005 to December 2008,the preoperative dates,postoperative mortality and the rate of complication were compared between two groups.Results The preoperative dates of two groups were no significant difference(P>0.05);2 cases(2.35%)were died in off-pump CABG group and 13 cases(15.29%)had complications in off-pump CABG group;9 cases(13.43%)were died in on-pump CABG group and 25 cases(37.31%)had complications in on-pump CABG group.The mortality and the rate of complication in off-pump CABG group was significantly less than that in on-pump CABG group.it was significant difference(P<0.01).Conclusion Off-pump CABG is safe therapy of mieosurgieal operation.
3.Mutagenesis of Transgenic Human Lung Adenocarcinoma Cell Line SPC-A-1/IL-2
Heshu LI ; Dianjun LI ; Lihua XIE ; Xu LIU ; Xuetao CAO ; Shenglong YE
Chinese Journal of Cancer Biotherapy 1995;0(02):-
Objective: To investigate the safety of transgenic human lung adenocarcinoma cell line SPC-A-1/IL-2 as tumor vaccine. Methods: IL-2 gene was introduced into human lung adenocarcinoma cell line SPC-A-1 and was expressed stably on the basis of the construction of retroviral packing cell line PA317/pLIL-2SN.The mutagenesis of both the DNA and supernatant of SPC-A-1/IL-2 in the and in vitro was tested by means of genetic toxicological techniques.Results:The result indicated that mutagenesis of both the DNA and the supernatant of transgenic cell SPC-A-1/IL-2 was not observed. Conclusion: The initial experiment suggested that the application of transgenic cell SPC-A-l/IL-2 as tumor vaccine was bisically safe and reliable.
4.Expression of collagens in reattached masseter muscles to mandibles following a surgical detachment.
Tong JI ; Chenping ZHANG ; Xuetao XIE
West China Journal of Stomatology 2003;21(1):16-18
OBJECTIVEThe aim of this study was to investigate the expression of collagen in the process of masseter muscle reattachment to the cortical and cancellous bones of mandible.
METHODSA total of nine adult goats were used in the study. One was the control. The other eight were treated with bilateral detachment of the masseter muscles. The biopsies of bone and muscle were taken at 2, 4, 8 and 12 weeks after the operation. The characteristics of the healing muscle-bone interfaces were examined using immunohistochemical techniques.
RESULTSImmunohistochemical analysis illustrated that the locations of collagen type I, II and III were different during the healing process, but similar in the cortical and cancellous bones.
CONCLUSIONThis study demonstrates that the distribution of the three types of collagens at the muscle-bone interfaces is associated with time, but not related with their locations.
Animals ; Collagen ; biosynthesis ; genetics ; Collagen Type I ; biosynthesis ; genetics ; Collagen Type II ; biosynthesis ; genetics ; Collagen Type III ; biosynthesis ; genetics ; Female ; Goats ; Male ; Mandible ; metabolism ; pathology ; surgery ; Masseter Muscle ; metabolism ; pathology ; surgery ; Wound Healing ; physiology
5.Endocytic routes of exogenous antigen in murine dendritic cells and macrophage
Zhifang XIE ; Xuetao CAO ; Weiping ZHANG ; Xuting YE ; Bingxue YU ; Zun ZHENG
Chinese Medical Journal 2001;114(1):93-96
Objective To compare the endocytic routes of exogenous antigen between murine dendritic cells (DCs) and macrophages (Mφs). Methods Murine bone marrow-derived DCs and peritoneal Mφs were pulsed with horseradish peroxidase (HRP)-5 nm colloidal gold for 10 minutes, then grouped and chased for 0-120 minutes in culture medium. Intracellular distribution of 5 nm colloidal gold was explored by means of the cellular enzymatic-chemistry of acid phosphatase and MHC Ⅱ immuno-cytochemistry under electron microscope. Results After 10 minutes of pulse with HRP-5 nm colloidal gold and 30 minutes of chase, most HRP-5 nm gold particles internalized by DCs entered into MHC class Ⅱ compartments (MⅡCs), and a small portion entered into acid phosphatase-positive lysosomes. In contrast to DCs, most Mφs lysosomes were accessed by HRP-5 nm gold particles, and a small portion of HRP-5 nm gold particles entered into MⅡCs. After 60 minutes of chase, 5 nm gold particles could hardly be seen within Mφs, whereas most 5 nm gold particles were still retained in DCs. Conclusions The endocytic route of exogenous antigen in DCs seems to be different from that in Mφs. Antigens taken by Mφs mainly enter into lysosomes within 30 minutes. In the case of DCs, most internalized antigens enter into MⅡCs, which may be related to their unique antigen-presenting function . In addition, Mφs seem to have more powerful capacity to scavenge exogenous antigen than DCs.
6.Electrospinning technology in tissue engineering scaffolds.
Haoyi LI ; Yong LIU ; Xuetao HE ; Yumei DING ; Hua YAN ; Pengcheng XIE ; Weimin YANG
Chinese Journal of Biotechnology 2012;28(1):15-25
Tissue engineering technology provides a new method to repair ill tissue and worn-out organs. In tissue engineering, scaffolds play an important role in supporting cell growth, inducing tissue regeneration, controlling tissue structure and releasing active factor. In the last decade, electrospinning technology developed rapidly and opened vast application fields for scaffolds. In this review, we summarized the technological conditions of electrospinning for scaffolds, the study of electrospun fiber scaffolds applied in tissue cell cultivation, and some new directions of electrospinning technology for scaffolds. We also addressed development directions of electrospinning research for scaffolds.
Absorbable Implants
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Biocompatible Materials
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chemistry
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Electrochemistry
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methods
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Guided Tissue Regeneration
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Tissue Engineering
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instrumentation
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methods
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Tissue Scaffolds
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chemistry
7.Wnt3a is Important in The Differentiation From Neural Stem Cell Into Dopaminergic Neuron In vitro
Shu HAN ; Wei SHI ; Yanhua LI ; Hailei YAO ; Xiaoyan XIE ; Lin CHEN ; Shuangshuang SHI ; Cixian BAI ; Xue NAN ; Fang YAN ; Yunfang WANG ; Xuetao PEI
Progress in Biochemistry and Biophysics 2006;0(10):-
Wnt signaling is implicated in the control of cell growth and differentiation during neural stem cell(CNS) development.Wnt3a, one of wnt gene family members, has effect on regeneration neurospheres and differentiation into neurons.Wnt3a inhibits regeneration of neurospheres, and promotes its differentiation. In vitro neurosphere was cultured in a serum-free defined medium DMEM/F12 supplemented with bFGF and EGF. Dissociated cells were plated onto poly-d-lysine-coated coverslips and propagated in medium containing recombined Wnt3a-adenovirus. Plenty of Nurr1 were detected by RT-PCR after 3 days. Wnt3a combined AA would improve NSC differentiation into dopaminergic (DA) neuron. The quantity of DA neuron is obviously more than the AA alone group's. Moreover, the expression of TH mRNA is 1.86 fold in Wnt3a combined AA group. Induced cells were immunostained for TH and DAT. The proportion of TH-positive was (37.42 ? 2.54) % (P
8.Establishment of a new human glioma cell line and analysis of its biological characteristics.
Guilin CHEN ; Yanyan LI ; Xueshun XIE ; Jinming CHEN ; Tingfeng WU ; Xuetao LI ; Hangzhou WANG ; Youxin ZHOU ; Ziwei DU
Chinese Journal of Oncology 2015;37(2):84-90
OBJECTIVETo establish a new glioma cell line and analyze its biological characteristics, and to provide a useful cellular tool with new features for cancer research.
METHODSGlioma tissue was taken from surgical specimen clinical of a clinical patient. Primary culture was carried out, and a cell line (SHG139) was established after 10 passages. Immunofluorescence staining was performed to detect the expression of proteins, and cell proliferation and cycle were detected by flow cytometry method (FCM). The biological characteristics of SHG139 cells were detected by chromosome karyotype analysis. SHG139s glioma cells derived from SHG139 glioma cell line were cultured with neural stem cell medium. Then stem cell markers were determined. SHG139s cells were induced with serum-containing medium, and their expression of A2B5, GFAP, β-III tubulin, and GalC was detected. Intracranial xenograft tumor of both SHG139 glioma cells and SHG139s glioma stem cell spheres was generated in rats.
RESULTSThe expressions of A2B5, GalC, GFAP, S-100, and vimentin in the 20 and 60 passages of SHG139 cells were positive, consistent with the immunohistochemical results and pathological features. SHG139 cells proliferated significantly within 24 h after subculture, and their total number of chromosomes was 68 and mostly multiploid. They were positive for A2B5 (84.12±9.96)%, nestin (73.86±5.01)%, and NG2 (73.37±2.09)%. SHG139s cells were induced, and the ratio of positive cells of GFAP, β-III tubulin and GalC was (92.89±2.24)%, (64.85±4.09)% and (33.57±4.14)%, respectively.
CONCLUSIONSSHG139 is an astroglioma cell line, from which SHG139s cells can be successfully obtained by culture with NSCM. SHG139s cells are of A2B5(+)/CD133(-) GSCs subgroup cells, with potentials of self-renewal and multi-directional differentiation. Compared with the intracranial SHG139 xenograft tumor, the intracranial SHG139s xenograft tumor is more malignant and aggressive.
Animals ; Astrocytoma ; Brain Neoplasms ; Cell Differentiation ; Cell Line, Tumor ; Cell Proliferation ; Flow Cytometry ; Glioma ; Humans ; Neoplastic Stem Cells ; Nestin ; Rats ; Transplantation, Heterologous ; Vimentin
9.Practice and consideration of the "Master-Apprentice" training model in Shanghai medical group assistance to Tibet
Xuetao XIE ; Jianfei TANG ; Jianing LOU ; Fei YUE ; Xingwang WAN
Chinese Journal of Medical Education Research 2023;22(8):1143-1147
In order to deal with the shortage of medical talents in Tibet, medical group assistance to Tibet is started as an innovative move in a new era, not only providing high-quality medical resources to Tibet, but also training local medical personnel by drawing on the "Master-Apprentice" model in traditional Chinese medicine. During the past three-year, the Shanghai Medical Team took advantage of medical group assistance to Tibet, enriched the types, methods and contents of teaching and mentoring tasks, and highlighted the role of "experts leading the backbone" and "team leading the team" in the "Master-Apprentice" model. The total amount and quality of local medical talents have thus been significantly improved. On the basis of summarizing experience, this study proposes a number of measures to optimize the current "Master-Apprentice" training model, evaluate the implementation process, and improve the feedback and quality management, so as to speed up the construction of the Tibetan medical talent team.
10.Multi-dimensional fixation of patellar multi-fragmentary fractures with locking plates
Xuetao XIE ; Yi ZHU ; Yu ZHAN ; Ruiyang LI ; Yukai WANG ; Congfeng LUO
Chinese Journal of Orthopaedic Trauma 2022;24(7):604-609
Objective:To report the surgical techniques and clinical outcomes of multi-dimensional fixation of patellar multi-fragmentary fractures with locking plates.Methods:A retrospective study was performed in the 26 patients with patellar multi-fragmentary fracture who had undergone open reduction and 3-D internal fixation with locking plates from November 2016 to July 2020 at Department of Orthopaedic Surgery, The Sixth People's Hospital Affiliated to Shanghai Jiao Tong University. There were 17 males and 9 females, with an average age of 62.6 years (from 31 to 90 years). The patellar fractures were exposed and reduced via the longitudinal anterior midline incision of the knee. After the reduction was initially maintained with a cerclage wire, a trimmed and pre-contoured 3.5 mm locking plate was applied onto the patellar surface. After-wards, locking screws were inserted from the lower pole to the upper pole of the patella, from the anterior to the posterior and from the lateral to the medial, respectively, to complete the multi-planar fixation. Follow-ups assessed the B?stman score, knee pain visual analogue scale (VAS), radiographic image and fracture healing, range of motion of the knee, and complications.Results:All the 26 patients were followed up for 12 to 56 months (average, 28 months). Crutches were used while walking until an average of 1.6 months (from 1 to 3 months) after operation in all patients. At the last follow-up, the B?stman score averaged 27.5 points (from 17 to 30 points), yielding 12 excellent, 13 good and 1 poor case with an excellent to good rate of 96.2% (25/26); the knee pain VAS averaged 1.2 points (from 0 to 5 points); the active knee flexion averaged 125° (from 100° to 150°). No breakage, loosening or displacement of the patellar plates or screws was observed during follow-up, but cerclage wire breakage occurred without any symptom in 11 cases. Four patients complained of hardware irritation, and 4 patients underwent hardware removal after fracture union.Conclusion:Multi-dimensional fixation with locking plates is a viable and safe surgical option for patellar multi-fragmentary fractures, due to its satisfactory therapeutic outcomes.