Objective To explore the new method to prevent graft versus host disease (GVHD) by clearing T lymphocytes of bone marrow graft through Fas-FasL way. Methods FasL-cDNA was transfected into BALB/C mouse hematopoietic cells by liposomes. The transfected cells were cultured together with BAC mice bone marrow graft. The mixed bone marrow graft was injected into BALB/C mouse recipients after 60 Co-? ray irradiating. Then the mortality, manifestation and pathologic change of GVHD of recipient mice were observed. Results Compared with control group, the mortality of the recipients in the experimental group was markedly decreased in 60 days (20% vs 70%, P

Objective To investigate the perioperative hemodynamic features of mitral replacement of patients with small left ventricle.Methods Patients with left ventricle end-diastolic dimension (LVEDD) less than 40mm received mitral replacement sur- gery were divided into big size M-2 group and small size M-1 group.The perioperative echo results were analyzed with SPSS software. Results The big size M-2 group has lower trans mitral gradient [ (5.9?1.6) mm Hg vs.(10.7?3.2) mm Hg],larger in vivo va- lular acre[ (2.9?0.2) cm~2 vs.(2.6?0.2) cm~2],and high mitral match index [(1.92?0.23) cm~2/m~2 vs.(1.73?0.18) cm~2/m~2 ].Conclusion With the meticulous perioperative treatment and myocardial protection,the patients with small left ventricle should also receive a mitral replacement as big as possible to achieve the ideal hemodynamics results.

Objective To observe the effects of hyperbaric oxygen (HBO) on the expression of FasL mRNA and caspase-3 protein in renal tissue after renal ischemia-reperfusion injury (IRI) in order to elucidate the underlying mechanisms.Methods Rats were randomly divided into thrcc groups: sham group(n=8),IRI group(n=8) and IRI+HBO group(n=8).The IRI group and the IRI+HBO group recieved 45 minutes hibateral renal ischima and the IRI +HBO group received additional HBO therapy at the 1st,24th and 48th hour after ischemia.The kidneys were removed at the end of HBO therapy.Malondialdehyde (MDA) level and superoxide dismutase (SOD) activity were measured to determine the extent of oxidative stress.The expression of FasL mRNA and caspase-3 protein was detected by quantitative real-time PCR and immunohistochemical staining in renal tissue respectively.Results Compared with the sham group,MDA level increased markedly and SOD activity decreased markedly after ischemia.After HBO treatment,MDA level decreased and SOD activity increased significantly (P ＜0.05).In IRI group,the expression of FasL mRNA and caspase-3 protein were higher than those in the sham group (P＜0.01),which were reduced significantly by HBO treatment (P＜0.01).Conclusion The expression of FasL mRNA and caspase-3 protein increases along with the lasting of reperfusion and HBO exhibites protection against cell apoptosis through improving the antioxidant-oxidant balance and reducing IRI in acute stage of IRI.

Objective Kidney-supplementing and blood-activating method was adopted in treating senile patients with isolated systolic hypertension to observe its decompression effects and influences on microalbunminuria (Malb),retinol binding protein (RBP) level in 24 hours.Methods 90 patients with simple systolic hypertension were randomly recurited into two groups.52 cases in the treatment group were administered with kidney-supplementing and blood-activating decoction,including 1 case falling off and 51 cases entering statistical analysis; 38 cases in the control group were administered with oral placebo,among them 2 cases were fallen offand 36 cases were entered statistical analysis.Both groups were treated for 8 weeks.Results () Blood pressure:systolic blood pressure at 4 and 8 weeks after the treatment in the treatment group [(144.03±12.33)mmHg (1 mmHg=0.133kPa) and (132.27±13.15)mmHg] wassignificantlyimproved than before the treatment [(156.32±12.05)mm Hg] (P＜0.05),and also significantly better than the control group at 4,8 weeks after the treatment [(151.19± 13.83)mm Hg,(152.74± 12.03)mm Hg] (P＜0.05).②The Malb,RBP level:Malb,RBP level [(40.80±13.51)mg/L,(150.43±23.62)mg/L] after the treatment in the treatment group was reduced than before the treatment [(50.14± 15.61)mg/L,(220.04±30.20) mg/L] (P＜0.05),and was significantly different to the control group after treatment [(52.12±14.69)mg/L,(219.34±34.37)mg/L] (P＜0.05).Conclusion Kidney-supplementing and blood-activating method can improve kidney function,and thus to reduce the effect of systolic blood pressure.

Objective To summarize the clinical experiences in setting up cardiopulmonary bypass(CPB)using extracorporeal membrane oxygenation(ECMO)circuit and turning CPB to ECMO after open heart operations in 16 cases.Methods In the group of 16 cases,the annulations were via femoral vessels:by Medtronic ECMO machine and membrane oxygenator was used in all patients.All patients accepted A-V bypass.Results CPB was running smoothly during the operations,and converted to ECMO after the surgeries without complications,and the rate of ECMO withdraw was 93.75%.Mortality was 18.5%,and 81.25%of patients were discharged.Conclusion ECMO is an effective device for cardio and pulmonary support.Many patients with severe cardiac diseases and marginal cardiac function will need mechanical support after surgery.For these patients,setting up CPB using ECMO circuit during the operation and converting it to ECMO after surgery can prevent patients from additional exposure to a standard CPB circuitry.It helps decrease the inflammatory response,avoid dilution of patient's volume of cells and factors,and reduce expenses.

ObjectiveTo explore the effect of prone position ventilation (PPV) on respiratory mechanics and prognosis in patients with acute respiratory distress syndrome (ARDS) concurrent with interstitial lung disease (ILD). Methods The data of 36 severe ARDS patients admitted to Department of Critical Care Medicine of the First Affiliated Hospital of Guangzhou Medical University from February 2013 to January 2015, were retrospectively analyzed. They were then divided into two groups according to the presence of ILD or not. The changes in respiratory mechanics and oxygenation indexes were compared before and after PPV treatment in all the patients. Kaplan-Meier method was applied to draw the 60-day survival curves of both groups.Results There were 17 cases with ILD among these 36 severe ARDS patients.① No significant difference was found in baseline data between ILD group and non-ILD group.② Respiratory mechanics and oxygenation pre-PPV and post-PPV: compared with pre-PPV, oxygenation index (PaO2/FiO2, mmHg, 1 mmHg = 0.133 kPa) post-PPV was significantly increased in both groups [ILD group : 132.0 (93.5, 172.0) vs. 118.7 (92.0, 147.8); non-ILD group: 126.1 (100.9, 170.0) vs. 109.2 (89.0, 135.0), bothP< 0.05]. Compared with pre-PPV, positive end-expiratory pressure (PEEP, cmH2O,1 cmH2O = 0.098kPa) post-PPV was significantly higher in ILD group [10.0 (10.0, 12.0) vs. 10.0 (9.2, 12.0),P< 0.05], and respiratory rate (RR, times/min) was significantly lower in non-ILD group [24.5 (22.0, 27.0) vs. 25.5 (22.8, 28.0),P< 0.05]. The compliance of the respiratory system (Crs, mL/cmH2O) post-PPV in non-ILD group was significantly lower than that of the ILD group [19.7 (16.1, 28.6) vs. 23.0 (19.0, 29.7),P< 0.05].③ Respiratory mechanics and oxygenation pre-PPV and post-PPV in total: after all the PPV therapy, PaO2/FiO2 (mmHg) was significantly increased in non-ILD group [135.0 (86.0, 200.0) vs. 97.4 (69.2, 127.5), P< 0.05], PaO2/FiO2 after all the PPV therapy in non-ILD group was also higher than that in ILD group [135.0 (86.0, 200.0) vs. 78.7 (59.3, 114.9),P< 0.05]. No significant difference in Crs (mL/cmH2O) before PPV treatment was found between non-ILD and ILD groups [24.3 (15.9, 48.9) vs. 18.9 (12.7, 27.3),P> 0.05], and Crs was lower after PPV treatment in both groups, but without significant difference [non-ILD group: 22.7 (15.2, 27.1) vs. 24.3 (15.9, 48.9); ILD group: 16.2 (12.8, 25.6) vs. 18.9 (12.7, 27.3), bothP> 0.05].④ The 60-day mortality in ILD group was significantly higher than that in non-ILD group [88.2% (15/17) vs. 57.9% (11/19),P = 0.047). It was shown by Kaplan-Meier curves that 60-day survival patients in ILD group was significantly lower than those in non-ILD group (χ2 = 5.658,P = 0.017). Conclusions PPV can improve oxygenation in severe ARDS. Compared with non-ILD group, though the compliance of respiratory system in ILD group is increased during PPV, long-term effect is better in non-ILD group.

Objective To investigate the effects of sepsis bundles in China.Method An observational study of 43 patients with severe pneumonia and septic shock admitted to the respiratory intertive care unit(1/11/2006-31/12/2007)was carried out.The selection criteria were in accordance with criteria set by International Conference On Sepsis in 2001.Implementation of 6 hours and 24 hours sepsis bundles was divided into 3 continu-ous phases consisting of education,trial,and application phase.A cohort of 43 patients with matched disease his-tory(1/1/2004-31/10/2006)was enrolled as control group.The percentages for categorical variables and mean±SD for continuous variables were reported.Chi-Square test.unpaired Student's t -test.paired-samples t test,univariate and multivariate logistic regression models were used.Statistical significance was defined as P＜0.05.Results There were very little significant differences in basic characteristics of patients between the two groups.Compared with control group,the differences in serrum lactate,fluid resuscitation and fluid volume infused within 6 hours and blood glucose control in shock subgroup were significant(P values were 0.024,0.009,0.045,and 0.000,respectively).Compared with control group,the differences in respiratory rate and oxygenation index of bundles group at 72 hours later were significant(P values were 0.033 and 0.041,respectively).Compared with control group,the differences in APACHE Ⅱ score and predicted mortality in shock subgroup of bundles were sig-nificant(P values were 0.017 and 0.040,respectively).Compared with control group,the reduction in absolute mortality was 23.30% in bundles group(P=0.019).Conclusions Implementation of sepsis bundles con-tributes noticeably to the significant reduction in mortality of patients with severe pneumonia and septic shock.

OBJECTIVETo explore a new method of alleviating graft-versus-host disease (GVHD) after allogeneic bone marrow transplantation (allo-BMT) through selected elimination of mouse alloreactive T cells (ARTC) by Fas-Fas ligand (FasL) passway.

METHODSThe Sca-1(+) early hematopoietic cells (EHCs) were isolated from BALB/c mouse (H-2(d)) bone marrow mononuclear cells (BMMC) by using a high gradient magnetic cell sorting system (MACS), then transferred with exogenous mouse FasL (mFasL) gene by retroviral gene transfecting technique. Afterward the transduced EHCs were expanded in vitro for one week followed by coculture with the spleen cells from BAC mouse (H-2(d) x b) as one-way mixed lymphocyte culture (OWMLC) for 6 days, then the cytotoxicity of treated BAC mouse spleen cells against Na(2)(51)CrO(4) labelling spleen cells from BALB/c mouse was observed.

RESULTSThe Sca-1(+) EHCs were successfully isolated by MACS, with a purity of (89.0 +/- 6.1)%. After transferred with exogenous mFasL gene and expanded for one week, the transferred EHCs in the 6 day OWMLC with the spleen cells from BAC mouse at a ratio of five to one resulted in an obvious inhibition of the BAC mouse spleen cells cytotoxicity against the BALB/c mouse spleen cell at different effector/target ratios as compared to the control group (P < 0.01).

CONCLUSIONThe higher exogenous mFasL-expressing mouse EHCs can deplete ARTC against their own major histocompatibility complex (MHC) antigens in vitro.

Animals ; Antigens, Ly ; immunology ; Fas Ligand Protein ; Female ; Graft vs Host Disease ; immunology ; Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells ; cytology ; immunology ; Membrane Glycoproteins ; genetics ; immunology ; Membrane Proteins ; immunology ; Mice ; Mice, Inbred BALB C ; Mice, Inbred C57BL ; Signal Transduction ; Spleen ; cytology ; immunology ; T-Lymphocytes ; immunology ; Transfection

Objective: To establish a quantitative model for evaluating the degree of traditional Chinese medicine (TCM) syndromes often seen in patients with coronary heart disease (CHD). Methods: Medical literature concerning clinical investigation of TCM syndromes of CHD was collected and organized, and the "Hall for Workshop of Metasynthetic Engineering" expert symposium method was applied. First, the 100 millimeter scaling was used for combining with scoring on degree of symptoms to establish a quantitative criterion for classification of symptom degree in CHD patients, and the model was established by using comprehensive analytic hierarchy process as the mathematical tool to estimate the weight of the criterion for evaluating qualitative syndromes in various layers by specialists. Then the model was verified in clinical practice and the outcomes were compared with fuzzy evaluation from the specialists. Results: A total of 287 clinical observation forms on CHD cases were collected, and 167 forms were available after excluding any irregular forms. The results showed that basic coincidence rate between the outcomes derived from specialists and those from the model was 68.26% (114/167), and part coincidence rate was 88.62%(148/167). Conclusion: This model, with good rationality and feasibility, has a high coincidence rate with fuzzy evaluation from specialists, and can be promoted in clinical practice. It is a good quantitative model for evaluating the degree of TCM syndromes of CHD.

With the widespread implementation of laparoscopic cholecystectomy in various levels of medical institutions, surgical complications have also increased. Among them, the incidence of bile duct injury remains high in complex laparoscopic cholecystectomy. The reason for this is that surgeons cannot effectively and accurately identify the relationship between the aberrant bile duct and the cystic duct and the common bile duct, resulting in the accidental injury of the bile duct, resulting in long hospital stays, increased medical costs, and decreased long-term quality of life for patients. Intraoperative cholangiography, as a real-time visual method of biliary presentation, can effectively reduce the incidence of iatrogenic bile duct injury. However, most surgeons do not fully understand the technology of intraoperative cholangiography during cholecystectomy. This article reviews the application of intraoperative cholangiography in laparoscopic cholecystectomy based on the clinical experience of the author′s team and the literature in recent years, with the aim of deepening the understanding of surgeons about intraoperative cholangiography, so as to better apply it to clinical practice and benefit patients.