石墨炉原子吸收光谱法测定血清中微量铬的探讨

用石墨炉原子吸收光谱法分析血清中微量元素铬对样品采用两种不同的预处理进行测定。直接将血清用０．２％ＨＮＯ３稀释１倍，然后以石墨炉原子吸收光谱标准加入法测定，精密度为：ＣＶ＝８．４％（ｎ＝１５），回收率均在９０％以上。用０．２％ＨＮＯ３溶液加入不同浓度铬，然后直接测定，ＣＶ值均在１０％以下（ｎ＝２０），回收率也大于９０％，灵敏度为３ｐｇ／０．００４４Ａ。背景吸收小于０．００１Ａ。而血清通过湿清化后测     

石墨炉原子吸收光谱法测定血清中微量铬的探讨

用石墨炉原子吸收光谱法分析血清中微量元素铬对样品采用两种不同的预处理进行测定。直接将血清用０．２％ＨＮＯ３稀释１倍，然后以石墨炉原子吸收光谱标准加入法测定，精密度为：ＣＶ＝８．４％（ｎ＝１５），回收率均在９０％以上。用０．２％ＨＮＯ３溶液加入不同浓度铬，然后直接测定，ＣＶ值均在１０％以下（ｎ＝２０），回收率也大于９０％，灵敏度为３ｐｇ／０．００４４Ａ。背景吸收小于０．００１Ａ。而血清通过湿消化后测定，精密度为：ＣＶ＝２５．９％（ｎ＝１５），回收率低于９０％以下。用０．２％ＨＮＯ３溶液加入不同浓度铬湿消化后测定。虽然回收率均大于９０％以上，但ＣＶ值均大于１０％（ｎ＝２０）。背景吸收较大，要用氚灯扣除背景。资料表明，样品预处理方法则是影响分析准确性的重要因素。因此采用样品直接测定，能防止样品铬的污染和损失。     

AccQ－Tag法测定复方氨基酸注射液中氨基酸的含量

采用６－氨基喹啉－Ｎ－羟基琥珀酰亚胺基氨基甲酸酯（ＡＱＣ）为衍生剂，与各种氨基酸柱前定量衍生后，用ＷａｔｅｒｓＨＰＬＣ仪，ＡＱＣ－Ｔａｇ￣ＴＭＣ＿１８柱，以１４０ｍｍｏｌ／Ｌ从醋酸钠溶液（ｐＨ＝４．９５）为溶剂Ａ，乙腈－水（３：２）为溶剂Ｂ进行梯度洗脱，检测波长为２４８ｎｍ，以α－氨基丁酸为内标。所有１８种氨基酸在３７ｍｉｎ内测定完毕，各种氨基酸测定的重现性ＲＳＤ％均小于２．０％（ｎ＝５），平均回收率为９７．０％６～１０５．０％（ｎ＝５）。     

紫外分光光度法测定哌泊溴烷的含量

用紫外分光光度法测定哌泊溴烷的含量，以０．０１ｍｏｌ／ＬＮａＯＨ溶液作溶剂，其测定液在５ｈ内稳定。其λｍａｘ为２４１ｎｍ，Ｅ１％１ｃｍ（２４１ｎｍ）为３５０．４。将标准溶液浓度对吸光度进行回归分析，回归方程为Ａ＝０．０３４９Ｃ－０．０１３８，ｒ＝０．９９９９，其回收率为１０１．４％，ＲＳＤ为１．１５％。     

紫外分光光度法测定诺氟沙星胶囊的含量和溶出度

用紫外分光光度法测定诺氟沙星胶囊的含量和溶出度，测定波长为２２７ｎｍ，在１．６￣５．６ｕｇ／ｍｌ浓度范围内呈线性相关（ｒ＝０．９９９８），回归方程Ａ＝０．１２４７５Ｃ－０．００６６，平均回收率为１００．５％，（ＲＳＤ＝０．８％，ｎ＝５）。     

紫外分光光度法测定哌泊溴烷的含量

用紫外分光光度法测定哌泊溴烷的含量，以０．０１ｍｏｌ／Ｌ ＮａＯＨ溶液作溶剂，其测定液在５ｈ内稳定。其λｍａｘ为２４１ｎｍ，Ｅ＾１％１ｃｍ（２４１ｎｍ）为３５０．４。将标准溶液浓度对吸光度进行回归分析，回归方程为Ａ＝０．０３４９Ｃ－０．０１３８，ｒ＝０．９９９９，其回收率为１０１．４％，ＲＳＤ为１．１５％。     

用紫外分光光度法测定依索拉定片剂的含量

建立测定二类新药依索拉定片剂含量的紫外分光光度法，用甲醇作溶剂，在２２１ｎｍ波长处测定１～１５ｍｇ／Ｌ依索拉定模拟样品的吸光度Ａ。结果：Ａ＝０．０３２±０．０７３，ｃ，ｒ＝０．９９９５（ｎ＝５）方法回收率为９８．６３％（４．０ｍｇ／Ｌ，ｎ＝４）。天内天间的ＲＳＤ为１．２１％（４．０ｍｇ／Ｌ，ｎ＝４）模拟样品的最低检测浓度为１．０ｍｇ／Ｌ，结论：本法具有准确度高，精密度好，试剂价廉，操作简便及便于推     

用HPLC法测定皮尔复溶液中尿囊素与甲硝唑含量

采用反相高效液相色谱法测定皮尔复溶液中尿囊素与甲硝唑的含量，以磷酸二氢钾（０．００５mol/Ｌ）－甲醇（７５：２５）为流动相，检测波长２１７nm，二者在２．０～８．０ug的浓度范围内，线性关系良好，相关系数（r）分别为０．９９９ ９（n＝６），平均回收率分别为９９．６１％（Ｒs＝０．４６％，n＝６）；９９．９６％（Ｒs＝０．２９％ ，n＝６）。     

紫外分光光度法测定磷酸咯萘啶肠溶片的含量

目的 研究磷酸咯萘啶在不同ｐＨ溶剂中紫外吸收特征变化，对药典采用的紫外分光光度法测定磷酸咯萘啶肠溶片含量的方法作了改进。方法 以ｐＨ２的盐酸溶液作为溶剂，２７４ｎｍ处为测定波长。与用其他溶液作溶剂的方法相比，以优化测定条件。结果 在０．５￣２０ｍｇ／Ｌ浓度范围内，浓度与吸光度成线性相关，回归方程为Ａ＝０．００４５＋０．０５０４ｃ，ｒ＝０．９９９８（ｎ＝６），天内精密度ＲＳＤ为０．１５％，天间精密度     

高效毛细管电泳法测定肾上腺素和去甲肾上腺素

探讨了用高效毛细管电泳法（ＨＰＣＥ）测定肾上腺素（Ｅ）、去甲肾上腺素（ＮＥ）的最佳分离条件，即以ｐＨ６．０的硼酸溶液加入０．１ｍｏｌ／ＬＮａＣｌ和２０％丙二醇为载体缓冲液，ＮＥ与Ｅ的浓度在０．０１～０．０５μｇ／ｍｌ内与峰面积之间有良好的线性关系（ｒＮＥ＝０．９９９０，ｒＥ＝０．９９８７），重现性结果为日内ＲＳＤＮＥ＝３．５２％，ＲＳＤＥ＝４．８１％；日间ＲＳＤＮＥ＝６．４２％；ＲＳＤＥ＝７．２７％。     

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.