海南绞股蓝甲醇提取物抗心律失常的实验研究

目的:研究海南绞股蓝甲醇提取物对心律失常的作用。方法:分别制作乌头碱、氯化钡和哇巴因引起的心律失常模型;观察其对抗作用。结果:绞股蓝甲醇提取物(SB)能够明显增加引起大鼠室性心律失常的乌头碱用量;显著减少氯化钡所致的双相性室性心律失常的动物个数,明显推迟心律失常的出现时间,综合维持时间,并明显增加引起豚鼠室性心律失常的哇巴因用量。结论:绞股蓝甲醇提取物具有明显的抗心律失常作用。     

安克律对麻醉犬程序性电刺激诱发性心律失常的影响

以程序性电刺激法研究安克律对犬心电生理和诱发性室性心律失常的影响。安克律引起血浓依赖性心室不应期延长和舒张期阈刺激强度增高,使QRS加宽,Q-Tc延长,高血浓使自发心率减,平均动脉血压降低。以双极电极行诱发刺激时,10例中半数可重复引起诱发性室性心律失常。然以阴极单电极行诱发刺激,则未能引起可重复的诱发性室性心律失常。表明在一定实验条件下,安克律可有易化诱发性室性心律失常的作用。     

苯海索抗实验性心律失常作用

在五种实验性心律失常动物模型上,观察苯海索(THP)的抗心律失常作用,结果发现THP1.5 mg/kg、3 mg/kg可对抗氯化钡、哇巴因和结扎大鼠冠状动脉引起的室性心律失常及增加兔电室颠阈值;THP 3 mg/kg可对抗乌头碱引起的室性心律失常。提示THP有抗实验性心律失常作用。     

利多卡因和普萘洛尔抗水合氯醛实验性心律失常作用

目的：通过观察水合氯醛引起兔室性心律失常持续的时间。并用利多卡因和利多卡因 普萘洛尔来研究它们对心律失常的影响。方法：用电生理学方法分别对水合氯醛组，利多卡因组和利多卡因 普萘洛尔组进行了标Ⅱ的心电图描记并进行对比分析。结果：水合氯醛可以引起兔室性心律失常，持续时间超过30min；水合氯醛引起兔室性心律失常后，注射利多卡因或利多卡因 普萘洛尔治疗后，室性心律失常持续的时间可明显缩短，心电图可恢复到正常。结论：水合氯醛可以引起兔长时间的室性心律失常，利多卡因可以对抗水合氯醛引起兔室性心律失常；利多卡因 普萘洛尔联合治疗能更好地对抗水合氯醛引起兔室性心律失常。     

抗心律失常药物致长QT综合症作用研究进展

抗心律失常药物(antiarrhythmic drug,AAD)基本作用是通过影响心肌细胞的离子通道,改变其电生理特征而起抗心律失常作用.然而大量的临床实践及实验结果表明,由于AAD作用机制的特点,不论是传统还是新型的AAD,均有致心律失常作用(proarrhythmia),即在服用治疗量或亚治疗量AAD的治疗过程中,可引起原有心律失常加重或者诱发新的心律失常.该作用是AAD引起死亡率增高的主要原因[1,2] .AAD引起的心律失常有室性、室上性快速性心律失常及缓慢型心律失常三类.临床上以室性快速性心律失常(ventricular tachycardia, VT)最为重要.VT又以QT间期延长 (Long QT, LQT)伴尖端扭转性室性心动过速(torsades de pointes,TdP)最为严重.     

镁对心室兴奋性及心室颤动阈值的影响

镁盐(硫酸镁或氯化镁)不仅对低镁血症引起的心律失常有效,而且对血镁浓度正常的室性心动过速和毛地黄中毒引起的心律失常也有效,但镁对心肌的作用和抗心律失常作用的机制尚未明确。我们对正常犬和冠状动脉结扎犬,测定硫酸镁静脉注射前后的室性过早搏动阈值及心室颤动阈值(VFT),研究了镁对心室兴奋性及心室颤动阈值的影响。     

器质性心脏病室性心律失常的治疗现状

目的：系统了解器质性心脏病所致室性心律失常的治疗情况。方法：通过查阅和光盘检索有关资料，进行综合评述。结果：引起室性心律失常原因繁多，治疗亦不同。结论：分析心律失常发生原因对治疗效果起决定作用。     

PGE_1对麻醉犬心脏电生理及对冠状动脉结扎所致室性心律失常预防作用

本文探讨了PGE_1对开胸麻醉犬心脏电生理及对冠状动脉前降枝结扎引起室性心律失常的预防作用。结果表明:①PGE_1可缩短房内传导时间,延长房室结传导时间;②PGE_1能延长心房及房室结功能不应期并可增加室颤阈值;③对冠脉结扎引起的室性心律失常也有一定的预防作用。     

黄芫花总黄酮抗实验性心律失常作用的初步研究

本研究证明黄芫花总黄酮有抗心律失常作用。静脉注射黄芫花总黄酮可对抗小鼠吸人大量氯仿所致的心室纤颤,对大鼠静脉注射鸟头碱所产生的心律失常有治疗作用;给大鼠快速静脉注射氯化钡能引起典型的双相性室上性快速心律失常,若予先静脉注射黄芫花总黄酮,则有予防作用。但给豚鼠静脉注射哇巴因所致的各种室性心律失常(室性期外收缩、室性心动过速和心室纤颤)及死亡却无保护作用。 实验结果表明,治疗量的黄芫花总黄酮可使大鼠的心率减慢,P-R间期延长,这些作用可能与黄芫花总黄酮的抗心律失常作用有关。     

红黄通脉冲剂抗心律失常作用

红黄通脉冲剂（ＨＨＴＭ）的主要有效部位为黄酮类化合物，ＨＨＴＭ１００ｍｇ．ｋｇ＾－１（以所含总黄酮计）ｐｏ给药，对乌头碱诱发大鼠室性心律失常，肾上腺素诱发家兔室性心律失常及引起小鼠室颤明显对抗作用，明显提高上腺素和乌头碱致室性心早搏的阈剂量，减少氯仿致小鼠室颤的发生率。对哇巴因诱发豚鼠的心律失常无明显一对抗作用。     

Value of D-Dimers in patients with acute aortic dissection

Objective: To evaluatel the value of D-dimers in patients with acute aortic dissection (AAD). Methods: This study consisted of 16 patients with AAD and 27 non-AAD patients. Serum D-dimets were measured by Sta-Liatest D-DI immunoturbidimetric assay. Results: D-dimer level was higher (P ＜ 0.001) in patients with AAD(7.91 ± 5.52 μg/ml) than that in non- AAD group(1.57±1.24 μg/ml). D-dimer was positive (＞0.4 μg/ml) in all patients with AAD and in 10 control group patients (37%). Among patients with acute AAD, D-dimers tended to be higher in Stanford A than in Stanford B (8.67 ± 4.31 μg/ml vs. 3.24±1.27 μg/ml, P ＜0.01). D-dimer values tended to be higher in more extended disease(3.84 ± 1.65 μg/ml, 8.57 ± 3.58 μg/ml and 11.87 ± 5.69 μg/ml in thoracic aorta, thoracic and abdominal aorta, thoracic and abdominal aorta and iliacal arteries, respectively, P ＜ 0.05 for both 8.57 ± 3.58 and 11.87 ± 5.69 vs. 3.84 ± 1.65 ). Including the control group into the analysis, we found a sensitivity of 100%, a negative predictive value of 100%, and a specificity of 66% and a positive predictive value of 64% for D-dimer in diagnosis of AAD in our patients with suspected AAD. Conclusion: D-dimer was elevated in patients with AAD. A negative D-dimer test result could be useful in excluding AAD.     

Research of combined liver-kidney transplantation model in rats

Objective： To set up a simple and reliable rat model of combined liver-kidney transplantation. Methods： SD rats served as both donors and recipients. 4℃ sodium lactate Ringer＇s was infused from portal veins to donated livers,and from abdominal aorta to donated kidneys, respectively. Anastomosis of the portal vein and the inferior vena cava （IVC） inferior to the right kidney between the graft and the recipient was performed by a double cuff method, then the superior hepatic vena cava with suture. A patch of donated renal artery was anastomosed to the recipient abdominal aorta. The urethra and bile duct were reconstructed with a simple inside bracket. Results： Among 65 cases of combined liver-kidney transplantation, the success rate in the late 40 cases was 77.5%. The function of the grafted liver and kidney remained normal. Conclusion： This rat model of combined liver-kidney transplantation can be established in common laboratory conditions with high success rate and meet the needs of renal transplantation experiment.     

Development on Adjustable Calibration Marker for Shock Wave Focus

Shock wave lithotripsy （SWL） is a treatment of choice for upper urinary stones. However, this procedure is inappropriate for obese patients because the focus is often unable to reach the target owing to the limited focal distance in shock wave source. Although treating such patients in a blast path may increase the application length of shock wave source, it＇s difficult to find this path on the lithotripter monitor. For this reason, we invented an adjustable calibration marker in order to set an effective focus in the shock wave hath.     

Study on the TCM Pathogenesis of Angiopathic Complications of Type II Diabetes

Excess production of reactive oxygen species(ROS)of mitochondrion mediated by hyperglycemia is the common pathogenesis of angiopathic complications of diabetes.TCM holds that the damp from the dysfunction of spleen.kidney and liver is the causative factor of complications of diabetes.This is similar to the mechanism of Ros resulting in angiopathic complications of diabetes.When the angiopathic complications of type II diabetes mellitus(T2DM)are difierentiated as caused by turbid damp in TCM can be explained as ROS.Since the obstruction of pathogenic damp in channels and collaterals is said to be the main pathogenesis,the treating principle should be dissolving the damp to remove the obstruction.     

Leptin, Ghrelin and TNF-α before and after Hypo-caloric Traditional Chinese Diet and Auricular Acupuncture

INTRODUCTION Obesity is a complex emergent problem, which can be possibly solved not only by the diet but also by the life style and promotion of a constant physical exercise. 1, 2 No doubt careful attentions must be given to the nutritional condition of obese people, the dietary habits, the somatic build (i.e. distribution of fat mass) and the organic functions linked to formation of the fat mass. All the parameters should be constantly monitored before, during and after a diet treatment. 3, 4, 5     

Relationship between Dysglycemia and Carotid Atherosclerosis in Tibetan Population

People with dysglycemia are at high risk for atherosclerotic diseases. This study aims at investigating the atherosclerotic vascular damage in dysglycemia and its metabolic origin in Tibetan population.     

APPLICATION OF LORNOXICAM TO PATIENT-CONTROLLED ANALGESIA IN PATIENTS UNDERGOING ABDOMINAL SURGERIES

FOR anesthesiologis s ,treatingpostoperativepainhas alwaysbeen a problem.Althoughopioidshave been provedtobe effective,theirsideeffectscouldnotbeignored.With thedevelopmentofscienceand pharmacology,many drugs with aspectsof satisfactoryanalgesicefficacyand couldbe welltoleratedby patientshave been developed.And lornoxicamisone of them, which isa non-steroidalanti-inflammatorydrug (NSAID ), with analgesic, anti-infl-ammatory,andantipyreticproperties.Itseliminationhalf-time(3 to 5 hours) isle…     

安心颗粒对急诊经皮冠状动脉介入术后生活质量影响的研究

目的：评价使用安心颗粒对急诊经皮冠状动脉介入术（PPCI）术后生活质量的影响.方法：将160例接受PPCI的急性ST段抬高型心肌梗死患者随机分为安心颗粒组（术前顿服安心颗粒8.8g,术后安心颗粒4.4 g/次,每日2次）和对照组（仅接受基础药物治疗）.所有患者均服用阿司匹林、氯吡格雷和阿托伐他汀.分别在入院时、出院前1d、出院后180 d时,应用心肌梗死多维度量表（MIDAS）、中文版SF-36评价量表对患者生活质量评分.并观察术后30 d以内的出血并发症、血小板减少症发生情况.结果：入院时和出院前1d,两组患者的心肌梗死MIDAS、SF-36量表评分比较无差异（P＞0.05）;出院后180 d时,与对照组比较,安心颗粒组MIDAS、SF-36评分明显减低（P＜0.05）;组内与入院时比较,两组出院前1d、出院后180 d时,MIDAS、SF-36评分均降低（P＜0.05）.两组患者在随访期间均无大量出血、少量出血、重度和极重度血小板减少症发生,安心颗粒组有4例、对照组有7例发生不明显出血（P＞0.05）.两组发生轻度血小板减少症的患者数比较无差异（P＞0.05）.结论：PPCI使用安心颗粒,能改善急性ST段抬高型心肌梗死患者的生活质量,且不增加出血风险.     

CLINICAL SIGNIFICANCE OF SERUM CYTOKINES IL-1β,sIL-2R,IL-6,TNF-α,AND IFN-v IN ACUTE CORONARY SYNDROME

Objectives To explore serum cytokines levels (including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v) and their significance in patients with acute coronary syndrome (ACS) and the subsequent follow-ups, with attempt to estimate the role of various serum inflammatory markers in the diagnosis and assessment of ACS.Methods The study population include 40 patients with acute myocardial infarction (AMI), 40 patients with unstable angina pectoris (UAP), and 40 controls. Among the 80 patients, 60 patients attended a follow up 4 months later. Serum inflammatory markers including IL-1 β, sIL-2R, IL-6, TNF-α, and IFN-v were measured by enzyme linked immunosorbent assay.Results Serum IL- 1 β, sIL-2R, IL-6, TNF-α were significantly higher in AMI group or UAP group compared to the control group and became significantly lower 4 months later in the follow-up patients. Serum levels of IFN-v shows no significant difference between AMI group or UAP group and controls, also showing no significant change when measured in follow up patients. There was no correlation between serum creatine kinase-MB isoenzyme levels and serum inflammatory markers either in UAP or AMI group. Furthermore, when divided into two subgroups using Wagner's QRS scoring system in the AMI group, there is no difference of each serum inflammatory marker between ≤ 6 scores group and ＞ 6 scores group.Conclusion Serum levels of certain inflammatory markers may have some diagnostic value for ACS, and can be a useful marker reflecting disease stability.     

Possible Spread of adenovirus type 3 from poultry to humans ：indirect evidence from an outbreak in China

Objective:To explore the epidemiology and etiology for an outbreak of acute respiratory tract infection that occurred in one county of Jiangsu Province, China 2004. Methods: Only cases meeting the case definition were included in the study. We reviewed the medical records of the cases who were admitted to the local hospitals, interviewed cases by a standard questionnaire, and then described the epidemiotogic features and analyzed risk factors by means of a case-control study. We collected pharyngeal swab specimens and sent them to different laboratories for isolation and culture. The laboratory used different detection methods such as DIP, PCR, electron microscope examination and microneutralization assay, to identify and then type the positive specimens. Results:A total of 871 cases were reported during the period from April 18 to July 4,2004. The distribution of onset times presented two peaks, one in late May and another in middle June. The epidemic occurred mainly in the elementary and junior high schools in ten townships of one county, and the mean age of the cases was 12 years (range 7 months to 18 years). The course of the disease was acute, and was characterized by fever accompanied with sore throat and tonsillitis. The WBC count of cases was normal or elevated. The mean duration of illness was 5 days (range 2 to 12 days). No fatalities from illness were reported. A case-control study indicated that the possible risk factors were close contact with a case and/or poultry before onset and sharing of towels among members of the family. The typical CPE was observed through inoculating pharyngeal swab specimens into the HEP-2 cell cultures in different laboratories. An infection of adenovirus type 3 was verified by detecting positive specimens in different methods. Conclusion:This investigation demonstrated that the acute respiratory infection in cases was caused by adenovirus type 3. Cases occurred in over 70 schools in ten townships in 2004, and the route of transmission was possibly close contact with cases or droplet transmission.