Humans ; Spirituality

Objective:To research expression and function of c-myc gene in hyperacute r ejection of xenotransplantation. 　　Method:Through the model of hyperacute rejection of xenotransplantation wit h isolated rat heart perfused with human plasma,we detected c-myc mRNA expressi on and cell localization with in situ hybridization in hyperacute rejection. 　　Result:c-myc mRNA increased expression in the endothelium cell of heart.Th e value of signal is 450.09±409.99.The value of signal of group of control is 1 74.40±51.50(p＜0.05)。 　　Conclusion:From these study findings,it would appear that hyperacute rejecti on is associated with the elevation of c-myc mRNA expression.

Objective To investigate the effect of PDGF-A on cardiac allograft vasculopathy and myocardial fibrosis in rats.Methods By using inbred Wistar rats as donors,and Sprague Dawley (SD)rats as recipients,heterotopic heart transplantation model was established,Four groups,each having 8 animals,were used.In normal heart group,Wistar rat hearts as blank control;In no rejection group,inbred Wistar rats as donors and recipients without immunosuppressive drugs,and grafts were removed on the day 60;In acute rejection group and chronic rejection group,Wistar rats as donors,SD rats as recipients,and the grafts were harvested on the day 5 without immunosuppresslve drugs in acute rejection group;In chronic rejectlon group,the graits were Immunohistochemistry was used for macrophages(CD68 positive cells)and reverse transcriptionpolymerase chain reaction(RT-PCR)assay for expression of PDGF-A mRNA in cardiac allografts.Results Macrophage infiltration was not found in normal heart group and no rejection group.In acute rejection group and chronic rejection group,macrophage infiltration was found around coronary vessels and in myocardial interstitium,especially in myocardial fibrosis area in chronic rejection allografts.The relative content of PDGF-A mRNA in normal heart group,no rejection group,acute rejection group,and chronic rejection group was 0.26±0.06,0.31±0.04,0.88±0.12,0.94±0.11respectively.PDGF-A mRNA was increased in chronic rejection group and acute rejection group significantly as compared with that in normal heart group and no rejection group(P＜0.01).Conclusion Macrophage infiltration and expression of PDGF-A are associated with cardiac allograft vasculopathy and myocardial fibrosis.

Objective To study pathological feature of sacroiliitis of spondyloarthropathies (SpA) in different stages,and improve the threshold of early diagnosis of SpA.Method Samples of sacroiliac joints (SIJ) of 8 patients with ankylosing spondylitis (AS) and 5 patients with undifferential spondyloarthropathies (uSpA) were taken when SIJ steroid injection was performed.The pathological feature was studied.Results Synovitis,including lining cell hyperplasia and inflammatory cell infiltration in looseconnective tissue,local cartilage degeneration,fibrosis and inflammatory cell infiltration in subchondral bony plate and marrow cave were found in 6 (86%,6/7) samples in patients with normal/suspectable SIJ CT scan.In the CT Ⅱ and Ⅲ degree sacroiliitis,marked degeneration and fibrosis of cartilage,inflammatory cell infiltration,pannus formation and subchondral bony plate destruction were increasingly prominent.In the advanced sacroiliitis (CT Ⅳ degree),destruction and calcification of cartilage and subchondral bony plate were the major feature.Eosinopil (EO) was increased in the infiltration cells of synovium and subchrodral bony plate in 3 samples.Conclusion Synovitis,including hyperplasia of lining cell and the infiltration of inflammatory cell in loose connective tissue,and local cartilage degeneration and inflammatory cell infiltration,and destruction of subchondral bony plate are the early changes identified in sacroiliitis.Pathological examination can improve the threshold of early diagnosis of sacroiliitis in case it cannot be confirmed with CT scan.

112.33mmHg).PaO2 of group B was significantly higher than those of group A after 30 minutes of reperfusion(54.42-118.87mmHg vs 112.33-183.73mmHg,P

Objective To summarize the experiences of reoperations on Ebstein's anomaly. Methods Clinical data of 17 cases of Ebstein's anomaly (6 males and 11 females, aged from 3 to 54 years old, averaged 23) were analyzed retrospectively. All the patients felt short breath and palpitation after exertion, and cyanosis was found in two patients. In the first operation, downwards displaced tricuspid valve leaflet was suspended and atrialized right ventricle was replicated in 14 cases, tricuspid anuloplasty and atrial septal defect were repaired in 2 cases, and tricuspid valve was replaced in 1 case. The interval time between two operations was 1-20 years in an average of 8 years. Before second operation, the cardiac function was NYHA Ⅱ in 6 cases, NYHA Ⅲ in 11 cases. Eight cases received Ebstein's anomaly anatomic correction, including transplanting downward displaced tricuspid valve and excising atrialized right ventricle. Seven cases received tricuspid valve replacement. Two cases received tricuspid valveplasty. All of operations were performed on arrested heart with moderate hypothermic cardiopulmonary bypass. The time of cardiopulmonary bypass was 70-287 (89.3?11.1)min, the time of aorta clamping was 70-287 (64.0?8.6)min. The transesophageal echocardiography was routinely performed before the operations and after the hearts rebeating. Results No case died in hospital, and all the patients were followed up for 1-3 years. Transesophageal echocardiography showed the tricuspid valve was closed well (non-reflow in 9 cases, mild reflow in 1 case) in 10 cases which received Ebstein's anatomic correction and tricuspid valveplasty. The cardiac function states of patients were significantly improved (NYHA Ⅰ-Ⅱ). Conclusion Most of patients with reoperations on Ebstein's anomaly can received anatomic correction. Tricuspid valve replacement is available if the pathology of tricuspid valve is severe.

Objective To evaluate the clinical effect and safety of the thrombus aspirated catheter (DIVER~(TM)) in primary PCI for acute myocardial infarction. Methods Seventy four AMI patients with total occluded infarct-related coronary artery(IRA)and intra-coronary thrombus from March 2005 to April 2006 were divided into two groups according to admission time and the treatment they received. After the 0.014 in BMW coronary wire crossed the lesion, the thrombus aspirated catheter (DIVERTM) was advanced over the wire to the lesion and continuously aspirated 2-3 times until the thrombus disappeared and stents were directly implanted in patients in group A (n=36) admitted from December 2005 to April 2006. Routine PCI applied in patients in group B (n=38) admitted from March 2005 to December 2005. Sirolimus eluting stents were implanted in both groups. The artery re-opened rate, no-reflow rate and the rate of major adverse cardiac events during hospitalization and 6 months after discharge were compared between two groups. Results Coronary arteriography showed the artery re-opened rate was 100% in both groups. The rates of no-reflow and major adverse cardiac events during hospital stay were significantly lower in group A than those in group B (2.78% vs 21.05% and 2.78% vs 10.53% respectively,P

Objective To summarize the early effect of orthotopic heart transplantation for 5 patients with end-staged coronary heart disease.Methods Orthotopic heart transplantations were performed on 1 patient with left ventricular mechanic circulatory support for 25 months after twice acute myocardial infarction, 3 patients with failing heart after acute myocardial infarction, 1 patient with failing heart after PTCA and CABG.Results Five patients recovered well. No any severe acute rejection and infection have been found. All survivors had good life quality and good heart function (NYHA I).Conclusion Orthotopic heart transplantation is an effective treatment for patients with end-staged coronary heart disease. Proper donor heart, excellent donor myocardial conservation, suitable immurosuppression treatment and appropriate control of hypertension, hyperglycemia, hypercholesterolemia and uricacidemia are key measures of successful orthotopic heart transplantation for patients with end-staged coronary heart disease.

Objective:To evaluate the effect of gtfB specific antisense phosphorothioate-modified oligodeoxyribonucleotides(PS-ODNs) on S.mutans sucrose-dependent adherence.Methods:Antisense oligodeoxyribonucleotide targeted to gtfB sequence 709~726 bp(PS-ODN1) and 3 479~3 497 bp(PS-ODN2) were synthesized.Natural genetic transformation of S.mutans with PS-ODN1 and PS-ODN2 was respectively performed.Adhesion of S.mutans to saliva coated hydroxyapatite was examined by crystal violet staining and destain with absolute ethanol.The absorbance at 620 nm was measured by plate reader(the absorbance value derived from the wells without sucrose was used as background and was subtracted).Results:The adhesion ability of the strains treated with antisense PS-ODN was significantly lower than that of the control(P

Objective To observe the protective effect of 11,12-epoxyeicosatrienoic acid(11,12-EET)on immature isolated rabbit hearts.Methods Forty-eight isolated immature rabbit hearts were randomly assigned to two groups: Control group,the hearts were arrested with St.Thomas No.2 solution and stored in the same solution ( n =24);EET group,the hearts were arrested with St.Thomas No.2 plus 11,12-EET solution and stored in the same solution ( n =24). All rabbit hearts were stored for 8,16 and 24 h with 4 ℃ hypothetmia, and underwent 30 min reperfusion ( 37 ℃ ). On the Langendorff perfusion apparatus,left ventricle developed pressure (LVDP),left ventricle end-diastolic pressure (LVEDP),+dp/pt max ,coronary blood effluent (CBE) and arrhythmias score were measured before and after ischemia. Myocardial water content,the value of creatine kinase (CK) and lactic dehydrogenase (LDH) were also measured,and myocardial ultrastructure observed. Results Postischemic recovery of myocardial function and myocardial edema were significantly better in EET group at different time points. The changes of arrhythmias score,CK,LDH and myocardial ultrastructure in EET group were superior to those in control group. After the hearts were preserved for 16 h ,the recovery of myocardial function and arrhythmias score in EET group were basically close to the measured values before heart preservation,while those in control group were significantly decreased. After the hearts were stored for 24 h ,all hearts in EET group beated again during reperfusion,but 5 hearts in control group could not beat anymore.Conclusion Addition of 11,12-EET into the St.Thomas No.2 cardioplegic solution could prolong the storage time and enhance the myocardial protective effect to the isolated immature hearts.