1.Mesenchymal stem cells as salvage therapy for steroid resistant acute graft-versus-host disease following haploidentical hematopoietic stem cell transplantation.
Mei XUE ; Zhi-dong WANG ; Lei DONG
Chinese Journal of Hematology 2011;32(12):878-880
Adolescent
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Adult
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Child
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Child, Preschool
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Female
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Graft vs Host Disease
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therapy
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Hematopoietic Stem Cell Transplantation
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Humans
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Immunosuppressive Agents
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therapeutic use
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Male
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Mesenchymal Stem Cell Transplantation
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methods
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Salvage Therapy
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methods
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Treatment Outcome
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Young Adult
2.Subcellular localization of different truncated core protein of genotype 1b hepatitis C virus in HepG2 cell
Xuebing YAN ; Lei MEI ; Mingshan WANG
Chinese Journal of Laboratory Medicine 2008;31(8):914-918
Objective To study the pathogenesis mechanism of hepatitis C vires (HCV) core protein (CORE), the subcellular localization of different truncated genotype 1b HCV CORE was observed. Methods HepG2 cells were transiently transfected with the enhanced green fluorescence protein (EGFP-CORE) recombinant plasmids, which expresses EGFP and COREs from three different genotype lb HCV strains and different truncated COREs from one HCV strain. The localizations of different truncated COREs was analyzed by the laser scanning confocal microscope and fluorescence microscope. Results N terminal 1-172 an of different HCV strains of genotype 1b expressed mainly in cytoplasm. Among the different truncated COREs, the longer of the CORE containing N terminal, the more expressed in cytoplasm. The N terminal 1-58 aa mainly expressed in nucleus. CORE of 59-126 aa and 127-172 aa expressed both in cytoplasm and nucleus. Conclusion The different localizations of different truncated COREs might have some relationships with their functions in pathogenesis.
3.Pre-modern Zhejiang TCM Diagnosis and Treatment of Technical Innovation
Journal of Zhejiang Chinese Medical University 2014;(1):33-35
[Objective]Exploring innovation in TCM diagnosis and treatment in Zhejiang before modern time,to provide reference for current TCM skil s' heritage and development in Zhejiang.[Method]Using literature research methods, the author sorts out the pre-modern Zhejiang Chinese medicine works. By analyzing and contrasting, the author finds innovative knowledge and information. [Result]Before modern times, the creative technology of TCM diag-nosis and treatment in Zhejiang was characterized with early start, long maintenance and wide range, moreover, in the clinical sections of internal medicine, gynecology, paediatrics, orthopaedics and rhinology, the new theory and new technology continual y came into being on treating rules, methods and diag-nosis. Therefore, it promoted the diagnosis and treatment levels in the whole. [Conclusion] Before the modern times, the creation of Zhejiang diagnosis and treatment technology originated from many doctors ’medical practices; the various diseases sourced from Zhejiang unique geographical and climatic environment offered good stage for generations of doctors to distinguish themselves; and the developed society and material civilization in Zhejiang area provided strong guarantee for Zhejiang doctors to find and invent new diagnosis and treatment technology.
4.The clinical outcome of maintenance hemodialysis patients with hepatitis C viruses infection.
Meishun CAI ; Mei WANG ; Lei XUE
Chinese Journal of Practical Internal Medicine 2001;0(05):-
Objective To observe the clinical outcome of maintenance hemodialysis patients with hepatitis C viruses(HCV)infection.Methods A retrospective investigation about hepatitis C viruses infection was performed in our hemodialysis centre on December 31,2007.The clinical data including demography,serum transaminase,bilirubin,albumin,anti-HCV antibody,HCV RNA,infection-control procedures associated hemodialysis and ultrasound of the liver was analyzed.Results The prevalent rate of HCV infection in our hemodialysis centre was 20.2%(20/99),The mean age of maintenance hemodialysis patients with HCV infection was(63.3?10.9)years old,the duration on dialysis was(79.9?38.7)months,and the duration of positive serum anti-HCV was(32.6?22.6)months(the longest duration was 103.5 months).16 patients(80%)had blood transfusion history in the patients with HCV infection.Only four cases had viremia of HCV,the serum HCV RNA became negative in one of them spontaneously and in another one after interferon therapy for half a year,the other two of them have viremia now.Most of patients found their serum transaminase elevated transiently and mildly.The age and duration on dialysis of the patients with positive serum anti-HCV were significantly longer than those of patients with negative serum anti-HCV.After strict infection-control procedures were carried out,the new onset cases of HCV infection was significantly decreased(1.2% vs 5.3%,P
5.Discussing the cultivation of dental therapist on china
Mei ZHANG ; Lei WANG ; Qinfeng SUN
Chinese Journal of Medical Education Research 2003;0(03):-
To discuss the actuality of dental therapists'cultivation,put forward the new educational mode on the dental therapist of the technological academy,and solve the urgent need of dental therapist.
6.Detection and clinical significance of serum IL-2, IL-4, IL-6, IL-10, IFN-γ and TNF-α in patients with chronic periodontitis and chronic periodontitis complicated with chronic obstructive pulmonary disease
Yueying WANG ; Mei LIN ; Lei WANG ; Zuomin WANG
Journal of Chinese Physician 2017;19(8):1148-1151
Objective To explore the expression level and clinical significance of serum interleukin-2 (IL-2),IL-4,IL-6,IL-10,interferon-γ (IFN-γ) and tumor necrosis factor-α (TNF-α) in patients with chronic periodontitis and chronic periodontitis complicated with chronic obstructive pulmonary disease (COPD).Methods From August 2015-August 2016,31 COPD patients combined with chronic periodontitis were set as group A,31 patients with chronic periodontitis were set as group B,and another 31 healthy subjects were selected as the control group in Chaoyang Hospital.Each group extracted fasting venous blood 4 ml,serum inflammatory factors levels (IL-2,IL-4,IL-6,IL-10,IFN-γ and TNF-α) were measured by cytometric bead array (CBA),periodontal condition [plaque index (PLI),clinical attachment loss (CAL),probing depth (PD),bleeding index (BI)] and lung function index [first 1 s forced expiratory volume% of predicted value (FEV1%),first 1 s forced expiratory volume occupies the percentage of vital capacity (FEV1/FVC)] were compared.Results The PLI,CAL,PD and BI levels in group B were higher than those in control group,indicators of group A were higher than group B,the difference was statistically significant (P < 0.05).There was no significant difference in FEV1 % and FEV1/FVC between group B and control group,indicators of group A were less than group B and control group,the difference was statistically significant (P < 0.05).The serum levels of IL-4,IL-6,IFN-γ and TNF-α in group B were higher than those in control group,indicators of group A were significantly higher than group B,the levels of IL-2 and IL-10 in group B were significantly lower than those in control group,indicators of group A were significantly less than group B (P < 0.05).Conclusions Periodontal status and lung function of chronic periodontitis and chronic periodontitis with COPD patients is not good,the serum levels of IL-4,IL-6,IFN-γ,and TNF-α were increased,and the serum levels of IL-2 and IL-10 were decreased,which might be important risk factors for chronic periodontitis and COPD happen and progress.Therefore,treatment regimen can be adjusted by detecting the levels of above indicators.
7.Clinical application of Inoue-balloon in percutaneous transluminal angioplasty for Budd-Chiari syndrome
Jian MEI ; Jian QU ; Yaoqing ZHU ; Lei WANG ; Cheng LIU
Journal of Interventional Radiology 2006;0(11):-
Objective To investigate the feasibility and effect of recanalization of inferior vena cava with percutaneous transluminal angioplasty(PTA)by Inoue-balloon. Methods Eighty-nine patients with Budd-chiari syndrome(BCS)were treated with PTA by Inoue-balloon. Results After PTA, the median(interquartile range)diameter of hepatic segment inferior vena cava increased from 0.00(0.20 ~ 0.00) cm to 1.90(2.00 ~ 1.47)cm; (P
8.Dot-immunobinding assay for the activity of egg yolk anibody
Guangping RUAN ; Mei AN ; Guihua WANG ; Lei YE ; Shufen DENG
Chinese Journal of Tissue Engineering Research 2007;11(12):2397-2400
BACKGROUND: There are differences in physical and biological activity between the antibody from mammals and egg yolk antibody (IgY) from chicken. IgY is acid- and heat-resistant, and can prevent and cure the infectious diseases in animals and human being, which is also benefit to develop routine diagnostic immunoassays. Conventional ELISA assay for IgY takes much more time than dot-immunobinding assay.OBJECTIVE: To detect the IgY stability byusing dot-immunobinding assay.DESIGN: Open trail.SETTING: Department of Transfusion, Kunming General Hospital of Chinese PLA.MATERTALS: The experiment was completed in the Kunming General Hospital of Chengdu Military Area Command of Chinese PLA from January to June 2006. Two White Leghorn hens (30 weeks old) were selected. HLA-A*0201 α chain served as the antigen. The total protein concentration of the purified antigen was 0.04 g/L with the molecular mass of 32 000(self-prepared); nitrocellulose filter (NC, import and divided); nonfat dry milk (Anyi Corp. No. 20051220); DAB (Boshide Corp.);caprylic acid (made by Shanghai Xinghuo Chemical Factory); ammonium sulfate (Shantou Guanghua Chemical product).METHODS: ①HLA-A*0201 α chain with the total protein concentration of 0.04 g/L was purified with egg yolk antibody,and identified by SDS-PAGE. ②1 μL antigen was spotted into the center of NC membrane and dried in the incubator at 37 ℃. Then the NC membrane was blocked in 1 mL PBST and put in the incubator at 37℃ with shaking in 90 r per minute for 15 minutes. Then the liquid was exchanged with 1 mL PBST and added the primary antibody at a final concentration of 10 mg/L. After 30 minutes shaking in the incubator at 37 ℃, the NC membrane was washed in PBST for three times. The second antibody, mouse anti-chicken IgY conjugated to horseradish peroxidase (HRP) was added and after 30 minutes incubation, the NC membrane was washed three times in PBST. Binding was revealed by incubation with a DAB reagent. A positive reaction was represented by adeep brown spot,Irdlcating that IgY had better activity; if the spot became lighter IgY lost part activity, and when the spot disappeared, the IgY lost a the activty.According to intensity (gray degree)of the dot compared tothe standard, the remained percent of activity of the IgY was calculated. ③IgY was adjusted to three different protein concentrations with PBS: 1, 0.1, 0.01 g/L and stayed at room temperature for four months. 10 μg lgY was taken out from each concentration sample every month to detect the activity by dot-immunobinding assay. ④IgY was put into seven EP tubes with 100 μL per tube and numbered 1-7. Number 1 to 3 was adjusted pH to 5, 3 and 2, respectively with 1 mol/L HCI; Number 4 to 6 was to 9, 11 and 12, respectively with 1 mol/L NaOH. The pH of number 7 was neutral without adding acid or base. The samples were stayed in incubator at 37 ℃ for 3 hours. 10 μg IgY from each tube was taken every hour to detect the stability at different pH by dot-immunobinding assay. ⑤IgY was added to six EP tubes (10 μL per tube) and numbered 1-6. Number 1-6 was put into waterbath at 30, 40, 50, 60, 70 and 80 ℃ for 15 minutes. After cooled in refrigerator at 4 ℃, 10 mg samples from each tube and standard sample (untreated sample) taken to check the thermal stability by dot-immunobinding assay.MAIN OUTCOME MEASURES: ①SDS-PAGE of IgY. ②IgY stability at room temperature. ③IgY stability at different pH. ④ Detection of IgY thermal stability.RESULTS: ①Purified IgY after SDS-PAGE had two major binds, the molecular mass of the heavy chain was 66.000,and the light chain was 25 000. ②1, 0.1, 0.01 g/L IgY still had partial activity after staying at room temperature for four months. ③When pH ranged from 5 to 9, IgY still had partial activity after staying in 37 ℃ for 3 hours. If pH was lower than 5 or higher than 9, it lost the whole activity in above condition. ④Purified IgY was added to six EP tubes, the number 1-4 still had partial activity, but number 5 and 6 showed some white precipitate, which was caused by protein denaturation at higher temperature.CONCLUSION: IgY stability is higher than others. The dot-immunobinding assay described a rapid and simple method for the demonstration and characterization of functional activity of egg yolk antibody. With only small volume antigen and antibody, and specific dot, the dot-immunobinding assay method could process many samples at the same time.
9.Thyroid function changes in children with primary nephrotic syndrome
Lei YU ; Linxian GAN ; Feiyan WANG ; Mei WU ; Jianmei CHEN
Chinese Journal of Postgraduates of Medicine 2014;37(27):10-12
Objective To explore the thyroid function changes of episodes period and remissions period in children with primary nephrotic syndrome (NS).Methods The urinary protein quantitation and serum albumin,total cholesterol,thyroid hormone level [total triiodothyronine (TT3),total thyroxine (TT4),free triiodothyronine (FT3),free thyroxine (FT4) and thyroid stimulating hormone (TSH)] of episodes period and remissions period in 15 children with primary NS were retrospectively analyzed.Results There were statistical differences in urinary protein quantitation and serum albumin,total cholesterol in children with NS between episodes period and remissions period (P < 0.05).The TT3,TT4,FT3,FT4 in episodes period were significantly lower than those in remissions period [(0.6 ± 0.3) μ g/L vs.(1.3 ± 0.3) μ g/L,(40.0 ± 23.0)μ g/L vs.(68.0 ± 15.0) μ g/L,(1.6 ± 0.3) pmol/L vs.(3.3 ± 0.3) pmol/L,(8.6 ± 2.5) pmol/L vs.(12.2 ± 2.0) pmol/L],TSH was significantly higher than that in remissions period [(5.6 ± 2.1) mU/L vs.(2.5 ± 1.1) mU/L],there were statistical differences (P < 0.05).Conclusions Thyroid function of episodes period in children with primary NS is decreased temporarily,associated with heavy proteinuria leads to thyroid hormone missing from urine.Detecting thyroid function plays an important role in estimating the state and guiding the treatment of primary NS.
10.The role of nuclear factor kappa B and helicobacter pylori associated protein A in the pathogenesis of idiopathic thrombocytopenic purpura
Huyi LEI ; Weiying FENG ; Mei LAN ; Yingxia WANG ; Yuehua CHEN
Chinese Journal of Primary Medicine and Pharmacy 2017;24(15):2268-2271
Objective To detect and analyze nuclear factor kappa B (NF-κB),Helicobacter pylori (HP),Helicobacter pylori cytotoxin associated protein A (CagA),platelet (PLT) and platelet associated IgG (PA IgG) in 224 patients with idiopathic thrombocytopenic purpur(ITP) from three urban hospitals of Shaoxing,in order to explore the role of NF-κB and CagA in the pathogenesis of ITP,then to improve the prognosis of ITP.Methods SABC method was used to detect the NF-κB,13C breath test for the determination of the Hp infection.CagA and PA-IgG were tested by enzyme linked immunosorbent assay.Automatic blood cell analyzer was used to measure PLT.According to the test results,the patients were divided into Hp+cagA+NF-κB+,Hp+cagA+NF-κB-,Hp+cagA-NF-κB+,Hp+cagA-NF-κB-,Hp-NF-κB+,Hp-NF-κB-PLT groups,and PA-IgG,PLT of the six groups were statistically analyzed.Results Of 224 cases with ITP,175 cases of HP positive,the positive rate was 78.13%.CagA+ 91 cases in 175 cases of Hp+,accounting for 52%,overall 43.63%.NF-kappa B+ 108 cases,the positive rate was 46.21%,78 cases were found in Hp+cagA+,accounting for 85.71% in cagA+.In 84 cases of Hp+cagA-,there were 21 cases NF-κB+,the positive rate was 25%.In 49 of HP-,9 cases with NF-kappa B+,accounting for 18.37%.PLT and PA-IgG were compared among the groups.The count of PLT of group Hp+,group Hp+cagA+ and group NF-κB+ was lower than group Hp-,group Hp+cagA- and group NF-κB-.However,the level of PA-IgG of group Hp+,group Hp+cagA+ and group NF-κB+ was higher than group Hp-,group Hp+cagA- and group NF-κB-,the difference was statistically significant(P<0.05).Conclusion CagA maybe directly or through the activation of NF-kappa B take part in the immune response of ITP,cause PA-IgG increased and thrombocytopenia.