BACKGROUND: Peroxisome proliferator-activated receptor-gamma(PPAR-γ) can restrain the inflammatory reaction of hypertrophic myocardium through restraining the expression of interleukin-6, cyclooxygenase, endothelin-1, nitricoxide synthase, matrix metalIoproteinase-9, gelatinase and adhesion molecule, etc.OBJECTIVE: To observe the influence of rosiglitazone sodium(the ligand for PPAR-γ) on inflammatory factors in rats with myocardial hypertrophy in the course of myocardial hypertrophy resulting from pressure load.DESIGN: Randomized controlled trial based on animals.SETTING: Department of Cardiovascular Surgery, Xinqiao Affiliated Hospital, the Third Military Medical University of Chinese PLA.MATERIALS: Fifty purebred male SD rats of S.P.F. Grade, whose body mass was (220±22) g.METHODS: The experiment was completed in the Institute of Battle Surgical Research, the Third Military Medical University of Chinese PLA from August 2004 to October 2005. Fifty rats were randomly divided into 5groups: control group, sham operation-normal saline group, sham operationrosiglitazone group, myocardial hypertrophy-normal saline group and myocardial hypertrophy-rosiglitazone group, 10 rats per group. The rat model of myocardial hypertrophy induced by pressure overload was established with the method of coarctation of abdominal aorta. Rosiglitazone group: At the postoperative 4th week, the rats were injected intraperitoneally with the Normal saline group: At the postoperative 4th week, the rats were injected intraperitoneally with normal saline[1 mL/(kg.d)] for 1 week. At the postoperative 5th week, the indexes of myocardial hypertrophy and hemodynamics were determined. The contents of tumor necrosis factor-α, platelet activating factor and myeloperoxidase in the left ventricle muscle were determined with radioimmunosorbent technique. The expression of PPAR-γ mRNA was detected with RT-polymerase chain reaction. The activity of nuclear factor-κB was detected with EMSA.MAIN OUTCOME MEASURES: The indexes of hemodynamics, cardiac ventricle reconstitution and cardiac muscle in the rat models.RESULTS: Except 1 rat in the control group died of the external injury induced by biting after 3 weeks, 49 of 50 rats entered the result analysis.①After the coarctation of aorta, the contents of tumor necrosis factor-α, platelet activating factor and myeloperoxidase of hypertrophic myocardium in the myocardial hypertrophy-rosiglitazone group were lower significantly than those in the myocardial hypertrophy-normal saline group(P ＜ 0.01-0.05), but they were still higher than those in the control group(P＜0.01).②The expressions of PPAR-γ mRNA of myocardial tissue in both the myocardial hypertrophy-rosiglitazone and myocardial hypertrophy-normal saline groups were higher obviously than those in the control group(P＜0.01), and those in the myocardial hypertrophy-rosiglitazone group were higher than those in the myocardial hypertrophy-normal saline group(P＜0.01).③The activity of nuclear factor-κB combined with DNA in cardiac muscle cell in both the myocardial hypertrophy-normal saline and myocardial hypertrophy-rosiglitazone groups were higher obviously than those in the control group (P＜0.01), and those in the myocardial hypertrophy-rosiglitazone group were lower obviously than those in the myocardial hypertrophy-normal saline group(P＜0.01).CONCLUSION: The increasing of pressure load induces myocardial hy pertrophy. The activation of nuclear factor-κB in the tissue of hypertrophic myocardium is strengthened obviously. The expressions of tumor necrosis factor-α, platelet activating factor and myeloperoxidase in hypertrophic myocardium increase. This inflammatory reaction, which is strengthened obviously, can be restrained by rosiglitazone sodium that is the synthetical lig and for PPAR-γ.

Objective To investigate the effects of rosiglitazone, an synthetic ligand of peroxisome proliferator activated receptor-?(PPAR-?) on the expression of proinflammatory factors in rats of myocardial hypertrophy. Methods The rat model of hypertrophy were established by coarctation of abdominal aorta in male SD rats, and the rats with myocardial hypertrophy were treated with rosiglitazone or physiological saline (n=10 for each therapy). Some rats underwent sham operation and were given rosiglitazone or physiological saline (n=10 for each therapy). Rosiglitazone at the dose of 4 mg?kg -1?d -1 or saline of 1 ml?kg -1?d -1 was given intraperitoneally for 1 week after postoperative 4 weeks. Another 9 rats served as control. Hemodynamics, ventricular hypertrophic index, TNF-?, PAF, MPD, PPAR-? and NF-?B were detected in all rats at postoperative 5 week. Results Significant hypertrophy was found in the left ventricle in rats undergoing the coarctation of abdominal aorta. The myocardium level of TNF-?, PAF, MPD was higher in rats with myocardial hypertrophy than in rats undergoing sham operation at postoperative 5 weeks (P

Objective To study the method of Traditional Chinese Medicine EMR System application evaluation, design the evaluation index. so that to make the Traditional Chinese medicine EMR system evaluation more scientific and normative. Methods Based on the current situation of traditional Chinese medicine EMR system functional evaluation and the evaluation methods of EMR System Function Application Level Classification Evaluation Methods and Standards (Trial)formerly issued by the Ministry of Health to research traditional Chinese medicine EMR system application evaluation methods. Results Evaluation methods of traditional Chinese medicine EMR system should be the establishment form 3 part:establishing evaluation index system and evaluation standard, establishing qualitative and quantitative evaluation, and establishing evaluation scores system. Conclusion Traditional Chinese medicine EMR system application evaluation method provides a scientific basis for designing traditional Chinese medicine EMR system evaluation index system.

To explore the molecular mechanisms underlying the immunomodulatory effects of hypertonic sodium chloride and hetastarch 40 injection (HSH) resuscition on the development of lung inflammation in a hemorrhagic shock model, Sprague Dawley rats were subjected to hemorrhagic shock and intratracheal LPS,the so called two hit rodent model.The animals resuscitated by transfusion of either Ringer's lactate(RL) or a 6ml/kg volume of HSH were sacrificed at 1,2,4 hour after resuscitation,respectively. Surface expression of adhesion molecule CD11b on circulating polymorphonuclear (PMN) was measured by flow cytometry. Bronchoalveolar lavage fluid(BALF) neutrophil counts were determined.Lung tissue myeloperoxidase(MPO) activity reflecting total lung neutrophil infiltration was assessed by modified Bradly′ method. The results showed that resuscitation with HSH significantly reduced BALF neutrophil counts( P

OBJECTIVETo explore the alterations of after depolarization and triggered activity in myocardiac muscle during progression of mouse aortic stenosis.

METHODSAfter the establishment of mouse aortic stenosis model, the heart was collected and intracellular potential was recorded using standard glass microelectrode. After the recording, the action potential (AP), early after depolarization (EAD), delayed after depolarization (DAD) in papillary muscles were analysed.

RESULTS(1) Compared with that of time-matched control mice, there were no changes of the action potoutial duration at 90% repolarization(APD90) in model mice at 2 and 5 weeks, whereas the APD90 was progressively prolonged at 9 and 13 weeks. (2) During the 30 minites of the experiment, spontaneous EADs and DADs were frequently present in medel mice at 9 and 13 weeks, were not in control and model mice at 2 and 5 weeks. (3) Compared with those of control group, EADs and DADs triggered by hypokalaemia or isoproterenol were increased significantly. The incidence rate of triggering EADs and DADs was progressively increased over time.

CONCLUSIONEAD, DAD and trigger activities increase gradually during the process of aortic stenosis, and it suggests that the myocardium electrical-instability is markedly increased in the insult hearts.

Action Potentials ; physiology ; Animals ; Aortic Valve Stenosis ; physiopathology ; Disease Models, Animal ; Male ; Mice ; Myocytes, Cardiac ; physiology

OBJECTIVETo find the characteristic parameters from electrocardiogram (ECG) which is most related to pathological progress, surface ECG was performed in mice at 2, 5, 9 and 13 week post surgery.

METHODSElectrocardiogram recordings: The mice were anaesthetized with tribromoethanol (250 mg/kg, i.p.). Lead II surface ECG were acquired by using the Biopac System MP150 at a rate of 5 kHz.

RESULTS(1) No arrhythmia was observed in Sham and 2-week Band mice. Spontaneous arrhythmias were observed in ECG recordings, with an incidence of 15%, 28% and 63% in 5-, 9- and 13-week Band mice, respectively. Tachyarrhythmias, such as frequent premature ventricular extrasystole, bigeminy, trigeminy, and paroxysmal tachycardia were found. (2) Analysis of ECG recordings revealed a significant prolongation of QT and QTc intervals. Compared with age-matched Sham mice, the increment in QT and QTc intervals was 20.4%, 32.7%, 49.7%, 61.0% and 27.1%, 32.1%, 43.9%, 59.1% at 2, 5, 9 and 13 week, respectively (P < 0.01). (3) The characteristic change in electrocardiogram was on the J wave. The amplitude of J wave was upward in Sham mice, and it was significantly flattened or inverted in Band mice. (4) Except that RR interval at 2 week showed a slight decrease, there was no significant change in PR interval and RR interval in Band mice.

CONCLUSIONIn the present study, we found that the increase incidence of spontaneous arrhythmias, prologation of QT interval and changes in the amplitude of the J wave in the surface ECG during progression of mouse cardiac hypertrophy and failure, and the progressive pattern indicated that a gradual aggravation of the ventricular repolarization delay in this mouse model.

Animals ; Cardiomegaly ; physiopathology ; Disease Models, Animal ; Electrocardiography ; Male ; Mice

Objective To explore the feasibility and safety of primary coronary stenting in the patients with coronary heart disease Methods From march 1997 to august 1999, 80 cases with 90 of lesions were selected for primary coronary stenting without the predilation procedure Their efficacy and success rate were analysed Results We smoothly pushed 85 stents into the lesion in the 80 patients, the success rate of primary coronary stenting was 94% with shorter duration of the procedure and lower cost In 3 lesions the stent did not cross the lesion and was successfully retrieved in the guiding catheter, in 1 cases the stent was lost in the systemic circulation with no further complications Conclusions Primary coronary stenting without predilation was safe and feasible in selected patients

Objective To analysis the clinical characteristics of kidney transplantation for the aged recipients and the influence of quadruple immunosuppressant on treatment result. Methods From 1990 to 2001,of 1251 cases of renal transpantation,the clinical data of 126 cases of the aged recipients over 60 years old were investigated.The aged recipients was divided into two groups;combination of cyclosporine(CsA),azathoprine(Aza) and corticosterioids was given in groupⅠ,In groupⅡ,except for CsA,mycophenolate mofetil(MMF),corticosteroids and Wu-T 3 quadruple therapy in the 47 cases aged recipients, Daclizumab or Basiliximab were injected in prophylaxis of acute rejection within 2 hours prior to transplantation and in someday after transplantation to the 24 aged recipients. The groupⅡ was compared with the groupⅠ in complications, the rate of acute rejection and the one-year-survival rate of patients/allograft.Results The rates of cardiocerebral vascular disease and infection complications in the aged recipients were higher than that in the non-elderly patients. In the groupsⅠ and Ⅱ, the postoperative complications was 74 55%and 38 03%, respectively;the rates of acute rejection were 12 73% and 4 23%,respectively;one year survival rate of patients/allografts was 81 82%/78 18% and 97 18%/95 77% respectively.Conclusions The cardiocerebral vascular disease and infection complications were the main factors affecting the outcome of renal transplantation in the aged recipients. The quadruple immunosuppressant regimens could reduce postoperative complications and acute rejection. At the same time one-year-survival rate of patients/ allografts have been improved in the aged patients.

Objective To study the pregnant outcome of those women who were over 41 gesta tional weeks. Methods A retrospective study, including 2903 normal nulliparous women who had delivered between July 1,2002, and December 31,2004, was conducted. Totally, 461 cases of prolonged pregnancies were included. The rates of cesarean delivery, fetal distress, and neonatal asphyxia were compared between those over 41 weeks and the others. Results The rates of cesarean delivery (48. 81%) and fetal distress (43. 38%) in prolonged pregnant group were significantly increased than those of the others women(P

Nucleolin is implicated in many pathological processes,particularly in inflammatory diseases,viral infection and neoplasms.Nucleolin levels are increased in several neoplasms and its localization changed,which play important roles in cell proliferation,apoptosis and metastasis of neoplasms.