Hematopoietic Stem Cell Transplantation ; adverse effects ; Humans ; Male ; Middle Aged ; Purpura, Thrombotic Thrombocytopenic ; etiology ; Transplantation, Autologous

Objective To explore and establish a kind of dissertation evaluation system which can fully reflects the characteristics of academic medical doctoral training.Methods 41 medical doctoral dissertation evaluation systems and related literatures were collected,to get the current situation of this dissertation evaluation system in our country and find the key points of various evaluation systems.A questionnaire survey was conducted among 350 doctoral supervisors coming from 6 universities so as to define the framework and connotation of evaluation indicators.Using the Delphi expert consultation method,the connotation of evaluation indicators and composition as well as the weight of various indicators was improved.Results The doctoral supervisors who participated in the research considered that building the dissertation evaluation system should follow the principle of science,innovation and fairness,and the evaluation frame-work should have secondary index and evaluation elements.The evaluation contents concluded choosing topic,literature review,basic theory and professional knowledge,paper writing,innovation,research ability and academic morals and so on.And on the basis of this,the paper explored and developed a more scientific and comparative dissertation quality evaluation system with medical specialty.Conclusion The cultivation units should take the educational goal of evaluation target and the requirements of awarding degree into consideration,seeking opinions fully to the first-line supervisors and combing quantitative and qualitative evaluation effectively with scientific and operable principles when specifying evaluation system.

Adolescent ; Adult ; Electroacupuncture ; Female ; Garlic ; chemistry ; Humans ; Male ; Middle Aged ; Moxibustion ; Tuberculosis, Gastrointestinal ; therapy ; Young Adult

Based on the principles of the in vitro staining technique, hypotonic swelling test, and water test, the Eosin Y-water test method was developed to simultaneously detect the integrity of the sperm head and tail and sperm membrane structure and function. As a widely used method in clinical laboratories in China, the Eosin Y-water test is methodologically characterized by three advantages. Firstly, both the sperm head and tail can be detected at the same time, which allows easy and comprehensive assessment of membrane damage in different parts of sperm. Secondly, distilled water is used instead of the usual formula solution to simplify and standardize the test by eliminating any potential effects on the water molecules through the sperm membrane due to different osmotic pressure or different sugar proportions and electrolyte solutions. Thirdly, the test takes less time and thus can be repeated before and after treatment. This article focuses on the fundamental principles and modification of the Eosin Y-water test and its application in sperm function examination and routine semen analysis for male infertility, assessment of the quality of sperm retrieved by testicular fine needle aspiration, semen cryopreservation program development, and evaluation of sperm membrane integrity after microwave radiation.
Cell Membrane ; China ; Cryopreservation ; Eosine Yellowish-(YS) ; Fluorescent Dyes ; Humans ; Infertility, Male ; diagnosis ; Male ; Osmotic Pressure ; Semen Analysis ; methods ; Sperm Head ; Sperm Motility ; Sperm Tail ; Spermatozoa ; Staining and Labeling ; Water

Objective To assess right ventricular(RV) regional and global function in patients with repaired tetralogy of Fallot (TOF) by speckle tracking imaging (STI).Methods 36 asymptomatic patients with repaired TOF whose postoperative period is more than one year and 35 healthy controls were studied.RV longitudinal peak systolic strain (ε),strain rate (SRs) were measured in RV free wall and interventricular septum(IVS) for basal,mid and apical segments by STI from the apical 4-chamber view,RV global longitudinal peak systolic strain (GLS),strain rate (GLSRs),early diastolic strain rate (GLSRe) and late diastolic strain rate (GLSRa) were measured from the above view.The correlations between RV systolic functional parameters and the postoperative period,degree of pulmonary regurgitation (PR) and QRS duration were explored.Results ①Compared with controls,εand SRs of RV free wall and IVS for most segments,GLS,GLSRs,GLSRe,and GLSRa were significantly impaired in patients with repaired TOF (P ＜ 0.05 for all).Both GLS and GLSRs were lower in postoperative patients with transannular patch than in those with RV out tract patch.②In comparison with controls,GLS,GLSRs,GLSRe and GLSRa were decreased in postoperative patients with mild,mid and severe PR,Whereas,there was no difference in RV global function among the patients with varying degree of PR.③GLSRs of RV was correlated inversely with postoperative period and QRS duration(r1--0.431,P1 =0.009 ; r2 ==-0.469,P2-0.004),RV GLS and GLSRs had no correlation with PR.Conclusions RV regional and global function in patients with late repaired TOF are decreased,STI can early detect right ventricular dysfunction in asymptomatic patients with repaired TOF.The type of operation impacts on late prognosis,RV abnormal deformations are associated with electrical depolarization abnormalities.

10.3969/j.issn.2095-4344.2013.25.007

Objective To investigate the epidemiologic features of HIV infections in voluntary blood donors in Zhejiang province.Methods A retrospective study was conducted in 206 cases of HIV-positive blood donors who were found from 2008 to 2010 by blood screening in Zhejiang Province,and the demographic data of those HIV carriers were analyzed using SPSS 16.0 software.Results The HIV-positive rates of voluntary blood donors in 2008,2009 and 2010 were 0.09‰(49/552 585 ),0.11‰( 64/601 639)and 0.15‰(93/600 893),respectively.There were five regions in Zhejiang province where HIV-positive rates exceeded 0.10‰,and the highest one was 0.21‰ in Wenzhou.HIV infection rate of male blood donors was 0.19‰,which was higher than that of female donors (0.02‰,x2 =96.21,P ＜ 0.01 ) ; donors with ages of ＞25-35 had the highest infection rate (0.19‰) among all age groups (x2 =41.94,P ＜0.01 ) ; blood donors with education of junior high school or lower had higher infection rate (0.21‰) than those with education of senior high school and undergraduate or above (0.11‰ and 0.02‰,x2 =78.62,P ＜0.01 ).Infection rate of first-time blood donors in 2008 was 0.12‰,higher than that of repeated donors (0.05‰,x2 =7.26,P＜0.01); while in 2009 and 2010,there was no difference between two groups (x2 =0.16 and 1.35,P ＞ 0.05 ).Blood donors who used mobile donation sites had higher infection rate than those using institutional donation (x2 =18.5,22.0 and 16.8 for 2008,2009 and 2010,P ＜0.01 ).Conclusions The risk of HIV infection is gradually increasing among voluntary blood donors in Zhejiang province.To ensure the blood safety,blood agencies should establish pre-donation health consultation for high-risk blood donors such as young men with low education.

Objective To evaluate left atrial(LA)function in patients with prophase essential hypertension (EH)by left atrial volume tracking(LAVT)method.Methods Thirty prophase EH patients and 35 healthy subjects(control group)were enrolled in this study.Ultrasound LAVT(Hitachi EUB-6500)was applied to display and analyze the LA volume loop imaging on the standard LV apical two and four chamber views.The maximal LA volume at end-systole(LAVmax),LA volume at the onset of ECG-P wave(LAVP),the minimal LA volume at end-diastole(LAVmin)from the LA volume loop were recorded,and body surface area was used to revise these volume indexs(LAVImax,LAVIp,LAVImin).LA pass,act and total empting volume(LAVIpass,LAVIact,LAVItotal)and empting rate(%LAVIpass,%LAVIact,%LAVItotal),effective pass and act erupting rate(%eLAVIpass,%eLAVIaet),and the proportionality of pass empting volume and act empting volume were caculated.Results The LAVIp,LAVIact,LAVItotal,%LAVIact,%LAVItotal,%eLAVIact in the prophase EH group were significantly higher than those in the control group,wheras the LAVIpass,%LAVIpass,%eLAVIpass,LAVIpass/act were lower(all P＜0.05,or P＜0.01).Conclusions The LA volume change in prophase EH is the act empting volume increased at end-diastole in main,LAVT is a potientially useful tool to evaluate the function of LA.

Objective To determine whether it could enhance gene delivery and tumor transfection in vivo by combination of ultrasound-targeted microbubble destruction(UTMD)with polyethylenimine(PEI)in tumor xenografts.Methods Two different reporter plasmid[lueiferase(pCMV-LUC)and red fluorescent protein(RFP)]were incubated with PEI to prepare cationic compound(PEI/DNA)in various nitrogen:phosphate ratios(N/P ratios,nmol of nitrogen in the PEI/nmol of phosphate in DNA).Formation of PEI/DNA complexes were confirmed by the gel retardation assay.Human cervical carcinoma(Hela)tumors were planted subcutaneously in both flanks of female nude mice.Tumor-bearing mice were administered by tail vein with PBS,plasmid,plasmid and Sono Vue microbubble,PEI/DNA and Sono Vue microbubble.One tumor was exposed to ultrasound irradiation (3 MHz,2 W/cm2,2 min exposure,duty cycle 20%),while the other served as control.The feasibility of targeted delivery and tissue specificity facilitated by UTMD and PEI was investigated.The mice were sacrificed 3 days after ultrasound exposure.Tissue specimens were viewed with microscopy to determine the presence of RFP expression.The efficiencies of luciferase transgene expression were determined.Histology analysis was detected.Results Electrophoresis experiment revealed that PEI was mixed with plasmid to condense DNA efficiently.The application of UTMD significantly increases the tissue transfection in vivo compared to plasmid alone.RFP expression was present in all sections of tumors that received ultrasound exposure but not in control tumors.Results of luciferase activity showed that the expression of luciferase was to be 14 times greater in ultrasound-exposed tumors(P＜0.01).More importantly,the increase in transgene expresgion was related to UTMD with the presence of PEI dramatically.At least 10-fold increase of luciferase gene transfer was obtained in irradiated tumors compared to non-irradiated controls(P＜0.01),111-fold increase compared to UTMD alone(P＜0.01).There was not significantly gene expression in other organs or tissues regardless of US exposure(P＞0.05).No tissue damage was seen histologically.Conclusions The combination of UTMD with PEI can enhance targeted delivery and expression of reporter gene to tumors at intravenous administration.It is a promising new and safe method for gene delivery in vivo.

Objective To investigate the diagnostic value of contrast-enhanced ultrasound (CEUS), and compare it with contrast-enhanced CT(CECT). Methods Eighty-one focal liver lesions were evaluated with CEUS and CECT, diagnostic value of two modalities were calculated, vaseularity manifestations of two modalities in arterial phase were compared. Results The sensitivity, specificity, positive predictive value, negative predictive value, and accuracy of CEUS were 96.6 %, 86.9 %, 94.9 %, 90.9 %, 93. 80%, respectively, and the diagnostic value of CECT were 98.3%, 82. 6%, 93.4%, 95.0%, 93.8%, respectively. Among all the metastasis, hypervascular manifestation lesions in arterial phase of CEUS and CECT were 72% (18/25) and 32% (8/25)( P <0.05). Conclusions The diagnostic value of CEUS and CECT in focal liver lesions are comparably satisfying,and there is no significant difference between them, the combination use of two modalities would improve the diagnosis performance. CEUS can show more hypervaseular metastasis than CECT in arterial phase.