HCV 定量 RT-PCR 竞争性参比标准的构建

将克隆的ＨＣＶ５’ＮＣＲ序列反向插入ｐＳＰ７２的ＥｃｏＲＶ切点，构建一种能转录ＨＣＶ－ＲＮＡ的质粒ｐＳｎｃ－２。以ＲＴ－ＰＣＲ从抗ＨＥＶＩｇＭ阳性病人血浆中扩增一段２３８ｂｐ的ＨＣＶ－ｃＤＮＡ，反向插入ｐＳｎｃ－２中克隆的５’ＮＣＲ序列的ＮｃｏⅠ切点，构建插入突变型ＨＣＶ－ｃＤＮＡ重组体ｐＳｎｃ－ｅ。应用限制性酶切和ＰＣＲ对这两种重组质粒进行了鉴定，为ＨＣＶ－ＲＮＡ的定量ＰＣＲ提供有用的内参照模板。     

HCV定量RT—PCR竞争性参比标准的构建

将克隆的ＨＣＶ５‘ＮＣＲ序列反向插入ｐＳＰ７２的Ｅｃｏ ＲＶ切点，构建一种能转录ＨＣＶ－ＲＮＡ的质粒ｐＳｎｃ－２。以ＲＴ－ＰＣＲ从抗ＨＥＶ ＩｇＭ阳性病人血浆中扩增一段２３８ｂｐ的ＨＣＶ－ｃＤＮＡ反向插入ｐＳｎｃ－２中克隆的５’ＮＣＲ序列的ＮｃｏＩ切点，构建插入突变型ＨＣＶ－ｃＤＮＡ重组体ｐＳｎｃ－ｅ。     

重组丙型肝炎病毒基因载体的构建与表达

应用基因重组技术。从载体ＣＤＺ２酶切获得１．７３ｋｂＤＮＡ片段（含１６ｄ９３ｂｐ的ＨＣＶ结构区ｃＤＮＡ，其特异性已为ｓｏｕｔｈｅｒｎｂｌｏｔ证实）。将ＨＣＶｃＵＮＡ片段插入载体ｐｃＤＮＡ３，构建ＨＣＶ重组体。经在大肠杆菌中表达，筛选、酶切分析，获得重组ＨＣＶ（ＰｃＤＮＡ３－ＨＣＶ）。以重组质粒转染Ｈ９细胞（ＣＤ淋巴细胞系），用Ｇ４１８筛选出抗性细胞。经ＲＴ－ＰＣＲ、ｄｏｔ－ＥＬＩＳＡ验证表明，ｐｃＤＮＡ３－ＨＣＶ能在Ｈ９细胞中进行复制、转录和表达。这为丙型肝炎发病机理的研究提供了一个有用模型。     

HCV 5‘—NCR序列克隆和转录重组质粒构建

选取ＩＶ基因型ＨＣＶ及中国和台湾代表株ＨＣＶ的５’ＮＣＲ区保守序列合成引物，以ＲＴ－ＰＣＲ从输血后非甲非乙型肝炎病人血浆中扩增一段３００ｂｐ的ｃＤＮＡ片段作目的基因，钝端插入ｐＵＣ１９的Ｓｍａ１切点，构建了ｐＵＨＣＶ－ＮＣ重组质粒。对ｐＵＨＣＶ－ＮＣ分别或混合应用ＨＣＶ序列特异的内外引物和载体序列特异的通用引物进行ＰＣＲ扩增，所得产物分子阳均同预期相符；酶切分析查出ＨＣＶ基因所带和克隆位点融合所产     

HCV5’－NCR序列克隆和转录重组质粒构建

选取ＩＶ基因型ＨＣＶ及中国和台湾代表株ＨＣＶ的５’ＮＣＲ区保守序列合成引物，以ＲＴ－ＰＣＲ从输血后非甲非乙型肝炎病人血浆中扩增一段３００ｂｐ的ｃＤＮＡ片段作目的基因，钝端插入ｐＵＣ１９的ＳｍａＩ切点，构建了ｐＵＨＣＶ－ＮＣ重组质粒。对ｐＵＨＣＶ－ＮＣ分别或混合应用ＨＣＶ序列特异的内外引物和载体序列特异的通用引物进行ＰＣＲ扩增，所用产物分子量均同预期相符；酶切分析查出ＨＣＶ基因所带有和克隆位点融合所产生的两个外源ＮｃｏＩ切点也存在；证实ｐＵＨＣＶ－ＮＣ中克隆基因是ＨＣＶ的５’ＮＣＲ序列且插入方向为反向。应用ＢａｍＨＩ和ＥｃｏＲＩ双切出克隆ＨＣＶ基因，粘端插入ｐＳＰ７２的多克隆位点，均建了ｐＳＨＣＶ－ＮＣ转录重组体，对之进行了ＰＣＲ和酶切鉴定。     

HCV广东株5‘NCRcDNA的克隆及序列测定

从广东省１例慢性丙型肝炎病人血清中提取ＨＣＶＲＮＡ，随机引物逆转录为ｃＤＮＡ后用ＨＣＶ５’端非编码区（５’ＮＣＲ）特异引物进行聚合酶链反应（ＰＣＲ），扩增产物３０２ｂｐ，经补齐和提纯后插入ｐＵＣ１９质粒，获得的重组质粒ｐＵＮ采用双脱氧链终止法测定核苷酸序列，与国内外多相株比较，核苷酸同源性介乎９２．６９％～１００％，其中与ＨＣＶⅡ（１ｂ）型的同源性最大，本文的测序结果可为引物设计提供依据，获得的Ｈ     

细胞因子对HCV基因疫苗诱生免疫反应的增强作用

目的 探讨细胞因子对丙型肝炎病毒（ＨＣＶ）核心（Ｃ）基因疫苗诱生免疫应答强度的增强作用。方法 将包含ＨＣＶ－Ｃ蛋白的基因片段插入真核表达载体ｐｃＤＮＡ３中,构建重组质料ｐｃＤＮＡＨＣＶ－Ｃ,将此重组质粒单独或与包含鼠ＩＬ－２或ＩＬ－１２基因的表达质粒共免疫ＢＡＬＢ／ｃ小鼠,ＥＬＩＳＡ法检测ＨＣＶ Ｃ特异性抗体产生情况,以ｐｃＤＮＡＨＣＶ－Ｃ转梁小鼠ＳＰ２／０细胞,表达ＨＣＶ Ｃ抗原为靶细胞,进行     

人分泌型白细胞介素2受体α链基因的克隆及其在真核细胞中的表达

删除人白细胞介素－２受体α链ｃＤＮＡ中编码胞质内１３个氨基酸及跨膜区１９个氨基酸残基的ＤＮＡ片段后，接上人工合成的终止寡核苷酸片段，改建后的ｃＤＮＡ与真核表达载体ｐＲｃ／ＣＭＶ重组成质粒ｐＣＭＶ／ｒｓＩＬ２Ｒ。用电打孔及磷酸钙法将此质粒转染ＣＨＯ细胞，经Ｇ４１８筛出表达Ｎｅｏ基因的克隆２０株，通过ｍＲＮＡ狭缝杂交及ＥＬＩＳＡ检测，有５株能稳定表达分泌型α链ｍＲＮＡ及蛋白，其中４株细胞培养上清中的ＩＬ２Ｒα链的含量达１４００Ｕ／ｍｌ以上。     

HCV 广东株5’NCRc DNA的克隆及序列测定

从广东省１例慢性丙型肝炎病人血清中提取ＨＣＶＲＮＡ，随机引物逆转录为ｃＤＮＡ后用ＨＣＶ５’端非编码区（５’ＮＣＲ）特异引物进行聚合酶链反应（ＰＣＲ）。扩增产物３０２ｂｐ，经补齐和提纯后插入ｐＵＣ１９质粒，获得的重组质粒ｐＵＮ采用双脱氧链终止法测定核苷酸序列，与国内外多个株比较，核苷酸同源性介乎９２．６９％～１００％，其中与ＨＣＶⅡ（１ｂ）型的同源性最大。本文的测序结果可为引物设计提供依据。获得的ＨＣＶｃＤＮＡ在常规ＰＣＲ步骤中用于设立有效的模板对照，对消除假阴性及评估试剂有重要意义。     

HCV核心蛋白DNA疫苗诱导的小鼠体液免疫应答

目的：观察丙型肝炎病毒（ＨＣＶ）核心蛋白ＤＮＡ疫苗诱导ＢＡＬＢ／ｃ小鼠体液免疫应答的效力，为研制应用于人类的ＨＣＶ ＤＮＡ疫苗提供实验依据。方法：将全长ＨＣＶ核心蛋白基因插入真核表达质粒载体ｐｃＤＮＡ３．１，构建ＨＣＶ核心蛋白重组表达质粒ｐｃＤＮＡ３．１ＨＣＶｃｏｒｅ，肌注ＢＡＬＢ／ｃ小鼠，以ＥＬＩＳＡ法检测小鼠血清ＨＣＶ抗体。以此重组质粒转染小鼠ＮＩＨ３Ｔ３细胞，以ＨＣＶ抗体阳性小鼠血清为捕获抗     

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     

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.     

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…     

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.