酞菁钴作为双功能模拟酶的研究

设计并合成4种金属酞菁(六羧基酞菁钴、四羧基酞菁钴、六磺酸基酞菁钴、四磺酸基酞菁钴)作为SOD和CAT双功能模拟酶。对其仿SOD和CAT的部分生物学功能进行检测。结果显示核黄素-蛋氨酸光明法证实它们在10-5～10-6mol/L浓度范围内有清除O2-的作用;分光光度法证实它们能催化H2O2的分解,且分解率随浓度增大而增大;用小鼠肝匀浆法测定4种金属酞菁、SOD和CAT,均表明有良好抗脂质过氧化作用;用多形核白细胞（PMN）-鲁米诺化学发光测定呼吸爆发中的活性氧,表明模拟酶对活性氧有清除作用;大鼠心脏缺血再灌注实验表明六羧基酞菁钴能降低活性氧对心肌的损伤程度,对再灌注损伤心肌有保护作用。     

酞菁钴作为双功能模拟酶的研究

设计并合成4种金属酞菁（六羧基酞菁钴、四羧基酞菁钴、六磺酸基酞菁钴、四磺酸基酞菁钴）作为SOD和CAT双功能模拟酶。以其仿SOD和CAT的部分生物学功能进行检测。结果显示：核黄素-蛋氨酸光明法证实它们在10^-5～10^-6mol/L浓度范围内有清除O2^-的作用；分光光度法证实它们能催化H2O2的分解，且分解率随浓度增大而增大；用小鼠肝匀浆法测定4种金属酞菁、SOD和CAT，均表明有良好抗脂质过氧化作用；用多形核白细胞（PMN）-鲁米诺化学发光测定呼吸爆发中的活性氧，表明模拟酶对活性氧有清除作用；大鼠心脏缺血再灌注实验表明六羧基酞菁钴能降低活性氧对心肌的损伤程度，对再灌注损伤心肌有保护作用。     

金属卟啉作为双功能模拟酶的研究

根据超氧化物歧化酶（ＳＯＤ）和过氧化氢酶（ＣＡＴ）活性结构相似原理,作者首次提出金属卟啉化合物可作为ＳＯＤ和ＣＡＴ双功能模拟酶,并对合成的４种金属卟啉「四－（对磺酸基苯基）卟啉铁、四－（对磺酸基苯基卟啉铜、四－（对磺酸基苯基）卟啉锰、四－（对磺酸基苯基）卟啉钴」进行了仿ＳＯＤ和ＣＡＴ的部分生物学功能检测。结果显示：核黄素－蛋氨酸光明法证实它们在１０＾－５～１０－６ｍｏｌ／Ｌ浓度内有清除Ｏ２＾－的作     

Co-TPPS_4清除氧自由基和过氧化氢的双功能作用

以四-（对-磺酸基苯基）钴卟啉[Co－TPPS4]作为超氧化物歧化酶（SOD）和过氧化氢酶（CAT）双功能模拟酶，研究其仿SOD和CAT活性及抗脂质过氧化活性。结果应用核黄素-蛋氨酸光照法证实其在10－5～10-6mol／L浓度范围内有清除超氧阴离子自由基的作用；分光光度法证实其能催化过氧化氢的分解，当其浓度由5μmol／L增至30μmol／L时，分解率由11．9％增至62．4％；小鼠肝匀浆法测定Co－TPPS4、SOD、CAT，均表明具有较好的抗脂质过氧化的作用。     

锰卟啉Mn(Ⅲ)TMPyP在缺血再灌注损伤中的作用

由缺血再灌注(IR)引起的肝肾损伤的病因与许多介质有关,包括氧化产物、细胞因子和活性氧(ROS)。其中ROS在缺血再灌注损伤(IRI)的过程中起着至关重要的作用,参与许多病理过程如氧化应激、细胞凋亡等过程。锰(Ⅲ)-四(4-N-甲基吡啶基)卟啉(Mn(Ⅲ)TMPyP)作为超氧化物歧化酶(SOD)和过氧化氢酶(CAT)模拟物具有减轻IRI的潜力。本文就Mn(Ⅲ)TMPyP在缺血再灌注方面的研究作一综述。     

促红细胞生成素对大鼠心肌缺血-再灌注损伤的保护作用

目的：探讨促红细胞生成素(EPO)对大鼠心肌缺血-再灌注损伤(MIRI)的保护作用及其机制。方法：采用结扎左冠状动脉前降支30min、再灌注120min的方法建立大鼠MIRI模型。将50只SD大鼠随机分为假手术组、缺血-再灌注组、EPO100U／kg治疗组、EPO1000U／kg治疗组、EPO5000U／kg治疗组5组，每组10只。连续监测肢体Ⅱ导联心电图记录再灌注时心律失常情况；测定再灌注末血清磷酸肌酸激酶同工酶(CK-MB)，心肌丙二醛(MDA)、超氧化物歧化酶(SOD)、谷胱甘肽过氧化物酶(GSH-PX)、过氧化氢酶(CAT)、Na^ -K^ -ATP酶和Ca^2 -ATP酶的变化；观察心肌超微结构改变。结果：EPO显著降低再灌注室性心律失常的发生；减少再灌注末血清CK-MB和心肌MDA含量，提高心肌GSH-PX、CAT、Na^ -K^ -ATP酶和Ca^2 -ATP酶的活性；明显减轻缺血-再灌注对心肌超微结构的损伤。对心肌SOD活性无影响。结论：EPO对大鼠MIRI有明显的保护作用，其机制可能与减轻氧自由基及钙超载损害有关。     

钴原卟啉诱导HO-1高表达抗大鼠心肌缺血/再灌注损伤的实验研究

目的 探讨血红素氧合酶-1(HO-1)对大鼠心肌缺血/再灌注损伤的保护效应及作用机制.方法 采用HO-1诱导剂钴原卟啉(CoPP) 和抑制剂锌原卟啉(ZnPP) 分别进行干预处理后建立大鼠心肌缺血/再灌注损伤模型,观察大鼠再灌注后I/R左心室心肌超微结构变化;检测HO-1蛋白在大鼠心肌的表达情况;测定大鼠左心室心肌组织超氧化物歧化酶(SOD)活性及丙二醛(MDA)含量.结果 再灌注前使用CoPP 进行预处理可以诱导HO-1蛋白表达上调.HO-1蛋白表达上调可以减少缺血/再灌注后心肌细胞坏死,提高心肌组织中SOD含量,并降低MDA含量.结论 CoPP诱导的HO-1过表达可以抑制心肌缺血/再灌注损伤后细胞坏死,从而减轻心肌再灌注损伤,抗氧自由基是其机制之一.     

人参皂甙对缺血再灌注损伤后犬心肌的保护作用

造成犬急性心肌缺血再灌注损伤模型,测定静脉血中超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性、脂质过氧化物(LPO)含量、心肌梗塞面积和梗塞程度,以评估人参皂甙对犬急性心肌缺血再灌注损伤后的保护作用.结果发现,人参皂甙能提高SOD、CAT活性(P<0.05),明显降低静脉血中LPO含量(P<0.05),缩小心肌梗塞范围,减轻心肌梗塞程度.提示:人参皂甙对犬心肌缺血再灌注损伤后的心肌具有良好的预防作用.     

血红素氧合酶-1对大鼠心肌缺血-再灌注损伤的保护作用研究

目的探讨血红素氧合酶-1（HO-1）对大鼠心肌缺血-再推注损伤的效果及作用机制。方法采用HO-1的诱导剂钴原卟啉（CoPP）和抑制剂锌原卟啉（ZnPP）分别进行干预处理后,建立大鼠的心肌缺血-再灌注损伤模型,观察大鼠再灌注后心肌形态变化;检测血红素氧合酶-1基因在大鼠心肌的表达情况;测定大鼠左心室心肌组织超氧化物歧化酶（SOD）活性及丙二醛（MDA）含量。结果再灌注前使用CoPP进行预处理。可以诱导HO-1蛋白的表达上调。HO-1蛋自表达上调可以减少缺血-再灌注后的心肌细胞坏死,提高心肌组织中SOD含量并降低MDA的含量。结论CoPP诱导的HO-1过表达可以抑制心肌缺血-再灌注损伤后的细胞坏死,从而减轻心肌的再灌注损伤,其主要机制与抗氧自由基有关。     

地塞米松对I/R心肌梗死面积及抗氧自由基酶的影响

目的:探讨地塞米松预处理对大鼠缺血 - 再灌注(I/R)心肌梗死面积的影响及机制. 方法: SD大鼠随机分成地塞米松组、对照组,分别予地塞米松和生理盐水预处理.预处理后构建Langendorff离体心脏I/R动物模型,缺血30 min后再灌注60 min,测定心肌丙二醛(MDA)、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷胱甘肽过氧化酶(GSH-Px)水平;TTC法测定心肌梗死面积;观察心肌超微结构变化.结果:与对照组相比,地塞米松组MDA水平显著降低(P＜0.01),SOD、CAT、GSH-Px水平升高(P＜0.05);心肌梗死面积明显缩小(P＜0.01).结论:地塞米松可减轻缺血再灌注后心肌梗死面积及心肌超微结构的损伤,其机制可能通过升高心肌组织抗氧自由基酶的水平、抑制脂质过氧化反应有关.     

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.     

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…     

BLOOD PRESSURE CHANGE WITH AGE IN SALT-SENSITIVE TEENAGERS

Objective To observe blood pressure change with age in salt-sensitive teenagers whose salt sensitivity were determined by repeated testing.Methods Salt sensitivity was determined through intravenous infusion of normal saline combined with volume-depletion by oral diuretic furosemide in 55 teenagers. After five years, salt sensitivity was re-examined and subject blood pressure was followed up. Blood pressure changes in salt-sensitive teenagers were compared to that of non-salt sensitive teenagers over five years.Results After 5 years, the repetition rate of salt sensitivity determined by intravenous saline loading is 92.7%. In teenagers with salt sensitivity on the baseline, both the systolic blood pressure increments and increment rates were much higher than non-salt sensitive teenagers (12.7±12.1 mmHg vs. 2.8±5.2 mmHg, P＜ 0.01; 12.2%± 12.0% vs. 2.5% ±4.4%, P＜ 0.001,respectively). There was a similar trend for diastolic blood pressure (8.4 ± 6.4 mmHg vs. 3.7 ± 6.4 mmHg, P = 0.052; 13.2% ±10.6 % vs. 6.8%± 10.1%, P = 0.053, respectively).Conclusions Salt sensitivity determined by intravenous saline loading showed good reproducibility. Blood pressure increments with age were much higher in salt-sensitive teenagers than non-salt sensitive teenagers, especially in terms of systolic blood pressure.     

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.     

Acupuncture Combined with Spinal Tui Na for Treatment of Primary Dysmenorrhea in 30 Cases

Objective: To observe the therapeutic effects in acupunture treatment of primary dysmenorrhea combined with spinal Tui Na, and study its mechanism. Methods: Thirty cases of the treatment group were treated by acupuncture combined with spinal Tui Na, and thirty cases in the control group were treated by routine acupuncture. Results: The total effective rate was 93.3% in the treatment group, and 73.3% in the control group, with a significant difference between the two groups (P<0.05). Conclusions: Acupuncture combined with spinal Tui Na has good prospects for treatment of primary dysmenorrhea.     

Luo Lingjie's Experience in Treating Chronic Nephropathy

In treating chronic nephropathy,Luo Lingjie,a chief physician,pays attention to regulating the balance between yin and yang,treating infection if present,and removing pathogenic factors.He prescribes gentle drugs and uses carefully strongly warming-tonifying ones,emphasizes the importance of persuading the patient to persist in treatment with medication and nurse one's health for recuperation,and is good at combined use of TCM and western medicine therapy and brings the merits of various therapies into full play,with obvious theraoeutic effects.