实验性病毒性心肌炎小鼠心肌细胞钾通道mRNA的表达

探讨病毒感染对心肌细胞钾通道表达的影响。方法用原位杂交技术检测实验性病毒性心肌炎ＢＡＬＢ／ｃ小鼠左心室Ｋｖ１．２、Ｋｖ２．１、Ｋｖ４．２３种电压调控性钾通道ｍＲＮＡ的表达。结果正常小鼠心肌细胞均存在这３种钾通道ｍＲＮＡ的表达,ＣｏｘｓａｃｋｉｅｖｉｒｕｓＢ３（ＣＶＢ３）感染的小鼠心肌细胞３种钾通道ｍＲＮＡ的表达水平明显增强。结论ＣＶＢ３对钾通道的作用可能是在转录水平的调节。     

ATP敏感性钾通道和钙激活钾通道对血管平滑肌的调控作用

在所有的离子通道中，钾通道种类最多。在血管平滑肌中目前已确认至少存在４种钾通道：①ＡＴＰ敏感性钾通道（ＫＡＴＰ）；②钙激活钾通道（ＫＣａ）；③电压依赖性（延迟整流）钾通道（ＫＶ）；④内向整流钾通道（ＫＩＲ）。它们在调节血管平滑肌细胞（ＶＳＭＣ）膜电位及血管张力方面各有其独特功能。近年来国际上对ＫＡＴＰ及ＫＣａ研究较多，本文就这两个钾通道的特性、调控及生理和病理状态下的改变作一综述。１　ＡＴＰ敏感性钾通道（ＫＡＴＰ）１．１　ＫＡＴＰ的特性　ＫＡＴＰ分布广泛，但密度较低，单个平滑肌细胞（ＳＭＣ）上只…     

格列本脲对糖尿病及正常大鼠心肌磺脲类药物受体mRNA的影响

目的 观察链脲霉素诱导的糖尿病大鼠的心肌磺脲类药物受体（ＳＵＲ１,ＳＵＲ２）和Ｋｉｒ６．２中否在ｍＲＮＡ水平发生变化,并探讨格列本脲治疗对正常及糖尿病大鼠心肌ＳＵＲ１,ＳＵＲ２和Ｋｉｒ６．２数量的影响。方法 成年雄性ＳＤ大鼠随机分为３组,糖尿病组、糖尿病胰岛素治疗组和正常组。另外一部分成年雄性ＳＤ大鼠随机分为糖尿病格列本脲治疗组和糖尿病对照组,非糖悄病格列本脲治疗组和非糖尿病对照组。格列本脲治疗组     

Cromakalim 阻断内皮素-1介导肺动脉高压的研究

内皮素－１（ＥＴ－１）和钾通道在肺动脉高压的发病中起重要作用。为了解ＡＴＰ敏感性钾通道开放剂对ＥＴ－１收缩肺血管效应的影响，对１０只Ｗｉｓｔａｒ大鼠预先采用肺动脉内注入ＥＴ－１（１．５μｇ／ｋｇ），形成肺动脉高压，然后采用ＡＴＰ敏感性钾通道开放剂Ｃｒｏｍａｋａｌｉｍ（１５０μｇ／ｋｇ）注入，记录注药前，注射ＥＴ－１后，以及使用Ｃｒｏｍａｋａｌｉｍ后１、５、１０分钟的大鼠肺血流动力学指标。结果：大鼠注入ＥＴ－１后，其ｍＰＡＰ升至３．３２±０．４９ｋＰａ，明显高于注射前的２．３６±０．２４ｋＰａ；应用Ｃｒｏｍａｋａｌｉｍ可明显降低ＥＴ－１导致的大鼠肺动脉高压，大鼠ｍＰＡＰ在注入１分钟时为２．５０±０．６２ｋＰａ，注入５分钟时为１．１４±０．１８ｋＰａ，注入１０分钟时为２．３３±０．５２ｋＰａ，同时伴有肺血管阻力降低。提示ＥＴ－１与钾通道之间存在相互作用，钾通道开放剂对ＥＴ－１收缩肺动脉的效应具有一定的抑制作用。     

人B淋巴细胞电压依赖性K^＋通道及ATP敏感性Cl^—通道的膜片钳研究

研究人Ｂ细胞电压依赖性钾通道（Ｋｖ） 及ＡＴＰ敏感性Ｃｌ－ 通道的存在及其调节。以人Ｂ细胞（Ｄａｕｄｉｃｅｌｌｓ）为研究对象,膜片钳技术做全细胞记录。结果表明,①全细胞ｖｏｌｔａｇｅｒａｍｐｐｒｏｔｏｃｏｌ 证实有Ｋｖ 通道的存在,该Ｋｖ 通道对钾通道阻断剂ｑｕｉｎｉｎｅ １００μｍｏｌ·Ｌ－ １ 及ｃｈａｒｙｂｄｏｔｏｘｉｎ（ＣＴＸ）１００ｎｍｏｌ·Ｌ－ １ 敏感。②灌流液中加入ＡＴＰ１ｍｍｏｌ·Ｌ－ １ 后,Ｋｖ 失活,并激活一外向性整流电流。在有ｑｕｉｎｉｎｅ 或ＣＴＸ存在时,该外向性电流仍然存在,但可被Ｃｌ－ 通道阻断剂ＤＩＤＳ１００μｍｏｌ·Ｌ－ １ 及Ｐ２ 受体阻断剂ｓｕｒａｍｉｎ １００μｍｏｌ·Ｌ－ １ 阻断。③电极液中加入ＰＩＰ２ ５μｍｏｌ·Ｌ－ １ ,也可明显削弱该外向性电流。提示人Ｂ细胞膜上有Ｋｖ 通道及ＡＴＰ敏感性Ｃｌ－ 通道的表达,Ｐ２ 受体及ＰＩＰ２ 可能参与其信息转导过程。     

AngⅡ受体对内向整流性钾流的影响

目的 探讨血管紧张素Ⅱ（ＡｎｇⅡ）对心肌细胞内向整流性钾流（ＩＫ１）的调节作用及其机制。方法 应用膜片钳技术研究ＡｎｇⅡ对豚鼠单个心肌细胞ＩＫ１的影响。结果 ＡｎｇⅡ促ＩＫ１，内向整流作用减弱。单通道记录表明，ＩＫ１的加大是由ＡｎｇⅡ激活了一种非常态钾电流，这不受ＬｉｓａｒｔａｎＧｌｉｂｅｎｃｌａｍｉｄｅ（ＡＴＰ敏感性钾通道阻滞剂）的影响。结论 这种非常态钾电流由ＡＴ２受体介导，可能是ＩＫ１的非常     

松花粉对缺锌生长中大鼠脂代谢影响的研究

松花粉对缺锌生长中大鼠脂代谢影响的研究赵霖１ＥｉｄｅｌｓｂｕｒｇｅｒＵ２ＥｄｅｒＫ２ＫｉｒｃｈｇｅｓｓｎｅｒＭ２关键词松花粉；脂代谢；锌；生长障碍中国图书资料分类法分类号Ｒ９７７．９１材料和方法作者制备了人工半合成饲料，选用雄性ＳＤ大鼠７０只，平均体...     

动脉血气标本和常规静脉血标本钾离子测定值的对比分析

用ＩＳ－１００型钾、钠、氯自动分析仪测定３３例呼吸科病人的动脉血气标本血清钾值（Ｋ＋Ａ２）和常规静脉血标本血清钾值（Ｋ＋Ｖ）．结果表明：Ｋ＋Ａ：为３．６７±０．８８ｍｍｏｌ／Ｌ（２．６０～６．００ｍｍｏｌ／Ｌ），Ｋ＋Ｖ为４．２５±１．０５ｍｍｏｌ／Ｌ（２．７９～７．８１ｍｍｏｌ／Ｌ）。两者差异有高度显著性（Ｐ＜０．０１）．两者相关系数为０．７４，直线回归方程为Ｋ＋Ｖ＝０．８５×ｘＫ＋Ａ２＋１．１４（ｍｍｏｌ／Ｌ）。作动脉血气分析时，利用Ｋ＋Ａ２推算Ｋ＋Ｖ，可较准确地判断有无血钾异常。     

动脉血气标本和常规静脉血标本钾离子测定值的对比分析

用ＩＳ－１００例钾、钠、氯自动分析仪测定３３例呼吸科病人的动脉血气标本血清钾值（Ｋ＾＋Ａ２）和常规静脉血标本血清钾值（Ｋ＾＋Ｖ为４．２５±、１．０５ｍｍｏｌ／Ｌ（２．７９￣７．８１ｍｍｏｌ／Ｌ）。两差异有高度显性（Ｐ〈０．０１）。两相关系数为０．７４，直线回归方程为Ｋ＾＋Ｖ＝０．８５×Ｋ＾＋Ｖ＝０．８５×Ｋ＾＋Ａ２＋１．１４（ｍｍｏｌ／Ｌ），作动脉血气分析时，利用Ｋ＾＋Ａ２推算Ｋ＾＋Ｖ，可较     

培养鸡胚心室肌细胞内向整流性钾电流及培养时间的影响

用膜片钳技术在细胞贴附式构型下，对原代培养鸡胚心室肌细胞单个通道的内向整流性钾电流（Ｉ＿（ｋ１））的特征及不同培养时间对Ｉ＿（ｋ１）的影响进行了观察。结果显示：在细胞内外Ｋ￣＋浓度相等的条件下（１４０ｍｍｏｌ／Ｌ）。当膜电位负于Ｋ￣＋平衡电位（Ｅ＿ｋ）时，可记录到内向的电流波动。其电流一电压（Ｉ－Ｖ）关系呈线性，斜率电导为３５ｐＳ（培养１～３天）；当膜电位正于Ｅ＿ｋ时，难于记录到外向电流，说明Ｉ＿（ｋ１）呈现强烈的内向整流特性。细胞培养１～３天、４～６天及７～１１天三个时段，Ｉ＿（ｋ１）通道的密度分别为０．６４、０．７６及０．７７ｃｈａｎｎｅｌ／μｍ￣２，其电导分别为３５、２８及３７ｐＳ，说明培养时间对Ｉ＿（Ｋ１）影响不大，这一结果可部分解释动作电位何以不随培养时间而变化。     

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.