溴甲酚绿比色法测定苦参不同年份不同部位中苦参总碱的含量

目的:采用溴甲酚绿比色法测定苦参不同年份、不同部位中苦参总碱的含量.方法:利用溴甲酚绿结合生物碱后在420nm处有最大吸收,测定吸收度A,将A与苦参总碱的浓度建立线性关系.结果:线性范围2.006～12.036 mg/L,r=0.9998,平均加样回收率102.08%,RSD为1.80%.结论:本方法操作简便、准确,研...     

HPLC法测定苦参药材中苦参酮、降苦参酮的含量

目的 建立测定苦参药材中 2种黄酮类成分苦参酮和降苦参酮含量的高效液相色谱方法.方法 采用 Phenomenex Gemini C18色谱柱 ( 250 mm×4.6 mm,5 μm ),以乙腈-水 ( 50∶ 50 )为流动相,流速 1.0 mL /min,检测波长 290 nm.结果 苦参酮和降苦参酮的线性范围分别为 0.318 6～1.593 0 μg (r=0.999 8),0.112 8～0.564 0 μg (r=0.999 9 );苦参药材平均加样回收率 (n=6) 分别为100.56% (RSD=0.93%),96.66%(RSD=0.85%).结论 3批样品测定结果表明,该方法简便、准确、重现性良好,可用于苦参药材苦参酮和降苦参酮 2种黄酮类成分的含量测定.     

苦参汤有效部位总生物碱含量测定方法研究

目的建立苦参汤有效部位中总生物碱含量测定方法.方法采用酸性染料比色法测定总生物碱含量:以苦参碱为对照品,溴麝香草酚蓝为酸性染料,在pH 7.6缓冲溶液条件下,用氯仿萃取.结果苦参碱在1.67～8.33 mg/L范围内与吸光度呈良好的线性关系,回归方程为C=0.076A 0.0068 r2=0.9995.苦参碱平均回收率为103.84%,RSD=0.75%(n=5).结论 5批样品测定结果表明,所建立的方法简便、准确,可用于苦参汤有效部位总生物碱含量测定.     

酸性染料比色法测定鞣苦胶囊中苦参总生物碱的含量

目的建立测定鞣苦胶囊中苦参总生物碱含量的方法.方法采用溶剂萃取酸性染料比色法测定苦参总生物碱含量,以氧化苦参碱为对照品,澳麝香草酚蓝为酸性染料,在pH 7.6缓冲溶液条件下,用氯仿萃取,检测波长417 nm.结果氧化苦参碱在0.698～13.96mg/L范围内与吸光度呈良好线性关系,回归方程为Y=20.243X-1.5136,r=0.9993(n=5),氧化苦参碱的平均回收率为102.67%,RSD=0.74%(n=5).结论所建立方法简便、准确、专属性强.可用于鞣苦胶囊中苦参总生物碱含量测定.     

苦参药材生物碱成分的HPLC指纹图谱

目的:采用高效液相色谱法研究并建立苦参药材生物碱成分的HPLC指纹图谱,同时进行定性和定量相似度评价.方法:采用Lichrospher ODS-2色谱柱(250 mm×4.6 mm,5μm),甲醇-乙腈(1:1)为有机相,0.1%氨水为水相,梯度洗脱,流速1.0 mL/min,检测波长210 nm,测定苦参药材的HPLC指纹图谱,统计分析确定共有模式;以最接近共有模式的苦参药材为特征对照,采用夹角余弦法(Cos θ)和相对欧氏距离法(RED)对不同产地苦参药材的HPLC指纹图谱进行定性与定量相似度评价.结果:苦参高效液相色谱指纹图谱中,以氧化苦参碱为参照峰,确定了10个特征峰.相似度比较结果显示,不同产地药材样品夹角余弦都大于0.9,表明各产地苦参药材化学组成一致性较好,相对欧氏距离由0.1至0.4不等,可见药材中特征成分含量上存在差异.结论:该方法重复性好,可为科学评价及有效控制苦参药材的质量提供参考.     

复方苦参灌肠剂的质量标准研究

目的建立复方苦参灌肠剂的质量标准。方法采用薄层色谱法鉴别苦参、黄连、黄柏、甘草;采用高效液相色谱法测定苦参碱和氧化苦参碱的总量及盐酸小檗碱的含量。结果在薄层色谱中能检出苦参、黄连、黄柏、甘草,用高效液相色谱法测定苦参碱、氧化苦参碱、盐酸小檗碱的质量浓度分别在0.02385～0.31800mg/mL(r=0.9999)、0.00835～0.11137mg/mL(r=0.9999)、6.0～36.0μg/mL(r=0.9995)与峰面积呈良好的线性关系,平均加样回收率分别为100.0%(RSD=2.9%)、104.9%(RSD=2.8%)、97.2%(RSD=1.8%)。结论此定性定量方法灵敏度和准确度较高,重现性好,专属性强,能够有效控制复方苦参灌肠剂的质量。     

紫外分光光度法测定牛蒡子提取物总木脂素含量

目的 建立牛蒡子提取物中总木脂素的含量测定方法.方法 利用总木脂素与牛蒡苷对照品在同一峰位有吸收,以牛蒡苷为对照品,测定样品溶液在280 nm波长处的吸收度.结果 对照品牛蒡苷浓度在0.01 804～0.0 902 mg/mL范围内吸收度与浓度呈良好的线性关系,r=0.9 999,平均回收率98.6%,RSD=1.7%.提取物中每克含总木脂素以牛蒡苷计,不得少于800 mg.结论 采用紫外分光光度法测定总木脂素含量方法可行,简便,稳定性可靠,精密度良好.     

不同产地贯叶金丝桃全草中总黄酮的含量测定

目的:用AlCl3-醋酸缓冲液(pH4.5)、NaNO2-Al(NO3)3-NaOH比色法测定不同产地贯叶金丝桃药材中总黄酮的含量。方法:利用黄酮类化合物在不同条件下与铝离子络合形成有色物质,在不同波长下测定其吸收度,按线性方程计算其含量。结果:金丝桃苷浓度为0.005736~0.034416mg/m l(r=0.9998)及12.688~76.128μg/m l(r=0.9999)时与峰面积呈良好的线性关系,方法平均回收率分别为98.3%、99.8%。结论:两种比色法都可用于贯叶金丝桃药材中总黄酮的含量测定,AlCl3-醋酸缓冲液更能真实准确地反映贯叶金丝桃中总黄酮的含量。     

紫外分光光度法测定依托度酸片半成品的含量

采用紫外分光光度法测定依托度酸片半成品的含量.检测波长为278 nm,吸收度与浓度(0～0.3 mg/mL)之间呈良好线性方程(r=0.9999).批内精密度RSD=0.2%(n=5).含量为80%,100%,120%的模拟回收率分别是99.4%,100.4%,100.7%,RSD＜0.5%,其结果与HPLC法一致.     

紫外分光光度法测定藤黄药材中总藤黄酸含量

目的建立藤黄药材中总藤黄酸含量的测定方法。方法采用紫外分光光度法,以新藤黄酸为对照品,在360nm处对藤黄样品中的总藤黄酸进行含量测定。结果新藤黄酸浓度在5.304~26.520mg/L范围内,与吸收度的线性关系良好(r=0.999 5),平均加样回收率为98.53%(RSD=0.21%,n=9)。结论该方法简便、准确、重现性好,可用于藤黄药材的质量控制。     

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.     

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.     

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.