AimTo explore the kinetic change of the IgG,T-cell subsets and IL-2 level from the mice infected with T. Spiralis. Methods The level of specific IgG A band IL-2 was determined by ELISA,the percentage of CD4+and CD8+ T-cells were examined by flow cytometry on 7, 14,21,28,35 days after mice infected with T. spiralis respectively. ResultAfter infected with T. spiralis,the level of IgG in mice rised gradually,and reached its peak on the 35th day. The change of T-cell subsets showed that CD4+T cells decreased,which CD8+Tcells increased. The ration of CD4+/CD8+cells decreased,and which was the obvious on the 14thday. It did not recover to normal level even on the 35th day. The IL-2 of level reached the peak on the 7th day after infected,then IL-2 level decreased quickly and lower than that of normal mice on 35th day after infected. Conclusion When the acute phase of T. spiralis infection,the immune function of host was inhibited. The protective immunity of against T. spiralis infection was cellular immunity mainly ,in cooperation with humoral immunity.

Objective To study the immune response induced by the mice immunized with Trichinella spiralis(T.spiralis) adult worm soluble antigen(AWSAg). Methods T.spiralis AWSAg was prepared to immunize Kunming strain mice. Dynamic changes of IgG, IL 2 and T lymphocyte subsets from immunized mice were determined after challenge infection on d 7, d 14 , d 21 , d 28 and d 35 . Results On d 7 after challenge infection, IgG and CD4 + T cells of immunized group were markedly elevated and persisted higher over the observation period. In contrast, CD4 + T cells and CD4/CD8 ratio were significantly decreased in unimmunized group resulted from immune suppression after infection. IL 2 levels reached the peak on d 7 and persisted in high level from d 7-d 21 in both immunized and unimmunized group after infection, then decreased gradually. Till 35 days after infection, IL 2 level was still higher than the normal mice. Conclusion Mice immunized with AWSAg of T. spiralis produced a potential cellular and humoral immune response.

Objective To study the apoptosis of multiple myeloma cell line KM-3 induced by NK cells. Methods WST-1 assay was used to detect the killing effect of KM-3 cells treated with NK cells at different effector(E):target(T) ratio. Flow cytometry was applied to analyze Annexin-V+/PI- apoptotic cells and the mitochondrial transmembrane potential. Results NK cells could significantly kill KM-3 cells in a dosand time-dependent manner (P <0.05). After KM-3 cells- were treated with NK cells for 48 hours, the Annexin-V+/PI- cells were increased obviously in dose-dependence (P <0.05). The Annexin-V+PI- cells were increased in time-dependence when treated with NK cells(E:T ratio at 10:1) (P<0.05). The mitochondrial transmembrane potential of KM-3 cells treated with NK cells were significantly decreased in dose-and time-dependence (P < 0.05). Conclusion NK cell can kill KM-3 cells and induce apoptosis in a dose-and time-dependence manner.

Objective　The aim of this study was to approach the effects of percutaneous transluminal coronary angioplasty (PTCA) and stenting on QT dispersion (QTd) in patients with coronary heart disease. Methods　PTCA and stenting were performed successfully on 42 patients with coronary heart disease. QTd and corrected QTd (QTcd) were obtained with a standard 12-lead ECG before and after PTCA+ Stent. Results　QTd and QTcd after PTCA+Stent were reduced significantly compared to those before PTCA+Stent (P<0.01). There were no significant difference in QTd and QTcd before PTCA+Stent between single vessel lesion and multi-vessel lesion, but after PTCA+Stent, QTd and QTcd in single vessel lesion were decreased significantly compared to those in multi-vessel lesion. The ventricular arrhythmia in 9 patients was over after PTCA+Stent. Conclusions　QTd and QTcd were decreased significantly after PTCA+Stent because of the improvement of myocardial ischemia and heterogeneous repolarization in patients with coronary heart disease. The degree in decreasing QTd and QTcd was associated with compensatory circulation in coronary artery.

Objective To investigate the effect of prostaglandin E1(PGE1) on the expression of monocyte chemoattractant protein-1(MCP-1)in human umbilical vein endothelial cells (HUVECs) and its possible mechanism. Methods Endothelial cells were incubated with oxidized low-density lipoprotein (ox-LDL group) in the presence or absence of prostaglandin E1. The level of MCP-1 in the supernatants was determined by enzyme linked immunosorbent assay (ELISA), the expression of MCP-1 mRNA in cultured endothelial cells was detected by in-situ hybridization and the protein expression of NF-κB was analyzed by Western blot. Results Compared with ox-LDL(100 μg/ml),PGE1 markedly lowered the levels of MCP-1[(0. 327±0. 051),(0. 214±0. 213),(0. 247±0. 228)pg/ml vs. (0. 655±0. 013)pg/ml], inhibiting the expression of MCP-1 mRNA [(0. 061±0. 008), (0. 033±0. 006),(0. 026±0. 004)A/μm2 vs. (0. 220±0. 032)A/μm2] in the cultured HUVECs in a dosedependent manner (0. 001, 0. 01, 0.1 mol/L). Western blot analysis demonstrated that the amount of NF-κB p65 was attenuated after treatment with prostaglandin E1 for 24 hours. Conclusions Prostaglandin E1 can downregulate the expressions of MCP-1 and NF-κB induced by ox-LDL in HUVECs, which may thereby defend the blood vessel endothelial cell function.

Objective To evaluate the effect of interventional vas embolism operation at ICU bedside in severe pelvis fracture patients complicated with hemorrhagic shock. Method Forty-eight severe pelvis fracture patients with hemorrhagic shock were treated by interventional vas embolism operation at bedside as well as intensive monitoring. The clinical results were compared with those of the traditional conservative therapy group. Results In the interventional therapy group, 46 patients with hemorrhage had been controlled within an hour after the operation and the success ratio reached 95.8%. The blood transfusion volume, the complication incidence and mortality rate were all significantly lower than those of the conservative therapy group. Conclusion Interventional vas embolism operation at ICU bedside is a safe, practical and effective treatment on pelvis fracture with iliac vas trauma.

Objective To investigate the therapeutic effects of recombinant human erythropoietin(rhEPO)on brain mitochondrial energy metabolism and mitachondrial respiratory functionin after brain injury in rats.Method A total of 63 Sprague-Dawley rats were divided randomly into three groups:the rhEPO treated group(n =28),the control group(n=28),the shanl group(n=7).The models of contusion of brain caused by freefalling were set up in rhEPO treated group(n=28).The recombinant human erythropoietin was intraperitoneally injected in dose of 10 U/g immediately after brain injury and it was repeated every 10 hours in rhEPO group treated.The same models of contused brain were made without rhEPO treatment as control group(n=28).In control group,the same volume of normal saline was used in replacemem of rhEPO.Aburr hole was made on the skull of the sham group(n=7),but the brain tissue was not wounded.The mitochondria were isolated at 6 h,12 h,24h,48 h after trealment,respectively.The activity of ATPase and SOD,the content MDA and brain mitochondrial respiratory function were measured by biochemical technique.The data were analyzed with the F-test and t-test.Results The activity of ATPase(P＜0.05),SOD(P＜0.01)and brain mitochondrial respiratory function(P ＜0.05)were increased.and the levd of MDA in brain mitochondria was reduced markedly in rats treated with rhEPO.Conclusions Treatment with rhEPO can alleviates the secondary brain injury by affecting mitochondrial function.

Objective To investigate the expression of nuclear factor kappa B(NF-?B) in carotid artery of hypercholesterolemic rabbits injured by balloon and its relationship with intimal hyperplasia.Methods Twenty-five New Zealand male rabbits were fed with atherogenic diet and balloon injury was conducted in right carotid artery 4 weeks later.The rabbits were killed at the 6th hour,24th hour,1th week,2th week and 4th week,respectively.Blood samples and right carotid artery were collected in time and intimal hyperplasia was studied by histological morphology method.The expression of NF-?B was measured by in-situ hypridization(ISH).Results Intimal hyperplasia was present at the 7th day after balloon injury in hypercholesterolemic rabbits and it became more obvious with the increasing of the time.The intimal hyperplasia was not detected in the media area.The intima/media ratio was increased as time went on.The expression of NF-?B mRNA was observed in the carotid atery of hypercholesterolemic rabbits at the 6th hour after balloon injury and the expression reached its peak at the 2th week.The expression of NF-?B was much higher in injury group than that of control group.Conclusion The expression of NF-?B is up-regulated in carotid artery of hypercholesterolemic rabbits injured by balloon,which is involved in the inflammatory reaction and restenosis caused by balloon injury.

Objective To evaluate left intra-ventricular diastolic blood flow patterns and fluid dynamics in pre diabetics using vector flow mapping(VFM),and to explore the value of left intra-ventricular hydromechanics characteristics assessment of intracardiac flow by VFM with more sensitive indexes.Methods Forty four patients with type 2 diabetes,twenty-eight pre-diabetes patients and thirty-three normal volunteers underwent VFM to determine the left ventricular(LV) diastolic blood flow patterns and fluid dynamics.The two-dimensional color Doppler flow images data were acquired in standerd apical fourchamber view during 3 complete cardiac cycles.These images were analyzed using a dedicated off-line workstation.At different level (mitral annulus,papillary muscl and apex level),the diastole blood flow parameters of LV including flow velocity and volume,velocity gradients (△V),pressure gradients (△P),diastole flow volume,vortex intensity ( Ⅵ),vortex area ( VA),vortex radius (VA) were derived.Thedifferences of the above parameters were compared among the three groups.The correlationship between diastolic function parameters and LV hydromechanics indexes were analyzed.Results ① Compared to normal group and pre-diabetics group,the LV diastolic function parameters E/A and e/a in diabetics group were lower( P ＜0.01),with no differences for E/e( P ＞0.05).There were no significant diffrences of these indices between diabetics group and pre-diabetics group( P ＞0.05).②)Compared to normal group,the intraventricular peak flow velocity at basal level,△V and △P in diabetics group and pre-diabetics group were lower( P ＜0.01),but there were no significant differences of these indices between diabetics group and prediabetics group( P ＞ 0.05).③Compared to normal group,the diastolic positive volume at basal level in diabetics group and pre-diabetics group was lower ( P ＜0.01 ),but there was no significant differences of these indices between diabetics group and pre-diabetics group ( P ＞ 0.05).④ Compared to the normal group,the Ⅵ in diabetics and pre-diabetics group was decreased,but there were no significant differences ofthese indices between diabetics group and pre-diabetics group( P ＞0.05).The VA and VR in diabetics and pre-diabetics group were increased,but there were no significant differences of these indices between diabetics group and pre-diabetics group ( P ＞ 0.05).⑤ There were no correlationship between diastolic function parameters and LV hydromechanics indexes.Conclusions There is the same LV diastolic blood flow patterns and fluid dynamics existed in pre-diabetics as diabetics.VFM could be used as a new methods to demonstrate the early left intra-ventricular fluid dynamics damages in pre-diabetics patients.

OBJECTIVE: To observe the long-term efficacy of two double-head compression titanium screw anterior and posterior cross internal fixation on femoral neck fracture. METHODS: A total of 80 patients with the femoral neck fracture, from January 2010 to December 2013 in the Second Xiangya Hospital, Central South University, were selected and divided into an experimental group (n=50) and a control group (n=30). Th e experimental group received the treatment of two compression titanium screw anterior and posterior internal fixation, while the control group received three titanium screw internal fixation. Surgery time and intraoperative blood loss and postoperative Harris hip score were compared between the 2 groups. RESULTS: Th e operative time in the experimental group was (41.6±6.4) min, which was shorter than that in the control group [(50.1±7.2) min], the postoperative bleeding loss was (20.2±8.1) mL, which was less than that in the control group [(31.4±9.8) mL], with significant difference (both P<0.05). The excellence rate of Harris hip score was 94.0% in the experimental group, while that in the control group was 93.3%, with no significant difference (P>0.05). CONCLUSION Two double-head compression titanium anterior and posterior cross internal fixation shows a good long-term efficacy on femoral neck fracture, which holds important clinical value and should be widely spread.
Blood Loss, Surgical ; Bone Screws ; Femoral Neck Fractures ; Fracture Fixation, Internal ; Humans ; Postoperative Hemorrhage ; Postoperative Period ; Titanium