大蒜对香烟诱发蚕豆根尖细胞微核的抑制作用

目的　探讨大蒜对香烟诱发蚕豆根尖细胞微核的抑制作用。方法　利用蚕豆根尖微核技术 ,对不同浓度香烟烟雾水溶物诱发蚕豆根尖微核进行了研究 ,并进一步研究了大蒜对诱变剂的抗诱变作用。结果　香烟烟雾水溶物 (0 .5～ 4支 10 0ml)能显著诱发蚕豆根尖微核的形成 (P <0 .0 1) ,并呈明显的剂量效应 ;香烟烟雾水溶物加入大蒜蒜汁处理蚕豆根尖 ,微核率显著降低 ,与阳性组比较有显著差异 (P <0 .0 1)。结论　大蒜蒜汁具有良好的抗香烟诱变能力。     

茶多酚表没食子儿茶素-3-没食子酸酯对红细胞膜的促氧化作用

目的：研究表没食子儿茶素-3-没食子酸酯（Epigal-locatechin gallate,EGCG）对人红细胞膜的促氧化作用及其分子机制.方法：采用人红细胞膜作为体外实验模型,观察经EGCG处理后细胞形态、膜巯基含量及膜蛋白电泳谱的变化,并与对苯醌的作用进行比较.结果：EGCG可诱导红细胞产生形变和聚集,但这种作用与其促氧化作用无关.在对分离的红细胞膜作用时,EGCG和对苯醌均表现出明显的促氧化作用,降低膜蛋白巯基含量水平,并诱导膜蛋白聚集.结论：EGCG可对红细胞膜产生促氧化作用,这种作用与其在氧化过程中产生的醌式中间体有关.     

抗氧化剂对皂苷溶血作用的影响

目的 研究麦冬总皂苷、人参总皂苷和生脉散的溶血作用及抗氧化剂对溶血的影响。方法 以氰化高铁血红蛋白法测定血红蛋白含量结合红细胞形态学观察。结果 人参总皂苷不溶血,麦冬总皂苷和生脉散溶,血溶血强度与皂苷浓度呈剂量依赖性,加入皂苷后红细胞有形态学改变。葡萄糖及抗氧化剂甘露醇和VitE能减轻皂苷的溶血作用。结论 皂苷溶血作用强弱与其所含皂苷的种类有关,并部分与增强红细胞膜的脂质过氧化有关。     

综合征简介

酒精中毒高脂血症溶血综合征(Zieves'Syndrome) 本征系指慢性酒精中毒患者出现黄疸、高脂血症和溶血性贫血三大主征的一组病征而言的。本征病因机理目前尚未完全明了,仅能就三大主征分述如下——黄疸:与酒精中毒损害肝细胞有关,致使胆汁瘀滞,甚有明显梗阻性黄疸。高脂血症:反映出胆汁阻滞的特征,即脂质分布显示磷脂质和胆固醇的比率明显增高。溶血性贫血:本征患者的红细胞对渗透压抵抗力减低。溶血的原因是血清脂质异常导致红细胞膜的脂质组成发生改变,使膜功能发生缺陷,于是脆     

香烟烟雾对气道糖皮质激素受体表达及黏液分泌的影响

目的：探讨香烟烟雾及提取物对大鼠肺及A549细胞糖皮质激素受体（ GR）表达和黏液分泌的影响。方法采用香烟和香烟提取物（CSE）分别诱导大鼠动物模型和A549细胞模型。运用HE染色观察正常大鼠（正常对照组）和熏烟大鼠（模型组）肺组织病理改变,运用Western blot 法检测大鼠肺组织细胞核和细胞质内GR及HDAC2的表达情况,运用MTT法观察CSE对A549细胞存活率的影响,荧光定量PCR检测细胞内MUC5AC和HDAC2的mRNA含量,免疫荧光法观察细胞内GR的分布和表达。结果 HE染色提示模型组较正常对照组肺泡壁毛细血管扩张、充血,泡腔内充盈大量浆液性渗出物;模型组肺组织细胞核和细胞质中GR表达量明显减少（ P＜0.05）,HDAC2表达明显减少（P＜0.05）。 CSE对A549细胞活性的影响呈时间－浓度依赖的趋势,且10％CSE作用24 h可显著降低A549细胞存活率（P＜0.01）;5％CSE作用A549细胞8 h可明显减少HDAC2和MUC5AC的mRNA表达量（ P＜0.01）。免疫荧光结果提示5％CSE可导致A549细胞GR表达减少,且细胞核中变化更加明显。结论香烟烟雾可减少肺组织及肺上皮细胞内GR的表达,并增加黏蛋白MUC5AC的分泌,其机制可能与香烟烟雾减少GR对MUC5AC的转录抑制机制有关。     

葡萄糖-6-磷酸脱氢酶缺乏红细胞膜唾液酸含量的改变

目的 :测定葡萄糖 - 6 -磷酸脱氢酶 (G6PD)缺乏时红细胞膜唾液酸的含量 ,以进一步了解G6PD缺乏溶血的机理 .方法 :以G6PD缺乏红细胞为研究对象 ,按常规方法分离红细胞膜 ,酸水解得到膜唾液酸 .利用反相高效液相色谱 -荧光法测定G6PD缺乏红细胞膜唾液酸的含量 .结果 :G6PD缺乏红细胞膜唾液酸含量明显低于正常红细胞 ,P <0 0 1.结论 :随着膜脂质过氧化作用和非酶糖基化的发展 ,唾液酸含量下降 ,从而导致膜表面负电荷减少 ,红细胞聚集 ,诱导红细胞形成缗线状红细胞簇 ,变形能力下降 ,并且使膜糖蛋白和糖脂次末端的半乳糖残基暴露 ,红细胞易被巨噬细胞识别并吞噬 .因此 ,红细胞膜唾液酸含量下降 ,可能是G6PD缺乏红细胞溶血的原因之一 .     

血清磷脂和β-脂蛋白的测定方法介绍

<正> 血清中包含多种磷脂:卵磷脂占总量60～70%,(神经)鞘磷脂占15～20%,脑磷脂占5～8%,此外还有少量的溶血卵磷脂等。同位素研究证明,血清磷脂来源于肝脏。一般认为磷脂是组成脂蛋白的一种重要组分,对肝脏合成的甘油三酯和胆固醇的转运起着重要的作用.因此,血清中胆固醇含量增加会导致磷脂含量的升高。如果磷脂水平降低,则胆固醇可贮存于网状内皮细胞,     

麝香的药理研究：Ⅲ.麝香抗炎作用原理

麝香水溶物可降低大鼠肾上腺内丙种维生素(VC)含量、提高外周血皮质酮含量,切除肾上腺其抗炎作用消失,但切除垂体其抗炎作用依然存在,说明肾上腺与麝香水溶物的抗炎作用密切相关。麝香水溶物能抑制血小板聚集。提高血浆cAMP水平的这些作用与非甾体抗炎药相似;但麝香水溶物能增强615小鼠免疫溶血反应的作用,提示其可能通过免疫调节而发挥抗炎作用。     

香烟烟雾提取物致小鼠骨髓细胞微核作用研究

我们以前的研究已证实香烟烟雾二甲基亚砜(DMSO)提取物可致小鼠生殖细胞染色体损伤[1],同时小鼠体内超氧化物歧化酶(SOD)、丙二醛(MDA)水平升高[2],认为香烟烟雾提取物可加剧小鼠体内的过氧化过程,并因此导致生殖细胞突变,对其后代的健康带来可能的威胁.香烟烟雾DMSO提取物加剧过氧化作用也可能作用于体细胞的遗传物质,并导致其损伤.因此,我们对香烟烟雾DMSO提取物致小鼠骨髓细胞微核的产生情况进行了研究,报告如下.     

腺病毒介导MnSOD基因转染对香烟烟雾提取物致内皮细胞氧化损伤及凋亡的影响

目的探讨香烟烟雾提取物(CSE)对内皮细胞氧化损伤及凋亡的影响,腺病毒介导锰超氧化物岐化酶(MnSOD)基因转染内皮细胞后,能否部分抑制CSE致内皮细胞的氧化损伤及凋亡。方法体外培养人脐静脉内皮细胞株(ECV304),质粒转染MnSOD基因后将内皮细胞分为3组:对照组、空质粒组及MnSOD组,同时分别给予0%、5%及10%CSE刺激。收集不同CSE浓度刺激后的培养上清液和细胞爬片,TBA法检测上清丙二醛(MDA)浓度,TUNEL法检测细胞凋亡率。结果(1)CSE刺激对照组内皮细胞,可致MDA浓度增加和细胞凋亡,存在CSE浓度和时间依赖性。(2)与空质粒组比较,CSE刺激后MnSOD组MDA含量和凋亡减少,有统计学意义(P<0.05)。结论(1)CSE能导致内皮细胞氧化损伤及凋亡。(2)腺病毒介导MnSOD基因可以部分抑制香烟烟雾提取物致内皮细胞氧化损伤及凋亡。     

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.