用HPLC法同时检测生物检材中安眠酮及其2‘—羟甲基代谢物

提到并确认安眠酮的活性代谢物，建立反相ＨＰＬＣ法同时检测生物体液中眠酮及该代谢的方法，使用Ｗａｔｅｒｓ高效液相色谱仪，μＢｏｎｄａｐａｋＣ１８径向加压柱，流动相为四甲醇，磷酸二氢钠缓冲液（６０：４０），流速１．６ｍｌ／ｍｉｎ，检测波长２３５ｎｍ，利眠宁为内标为安眠酮及活性代谢物进行检测，结果：各组分分离良好，安眠酮浓度在１．０～３５．０ｍｇ／Ｌ（血清），范围内与峰面呈线性相关，方法平均回收率为１０     

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     

紫外分光光度法测定兔血清中二氯乙酸钠浓度

作建立检测二氯乙酸钠血清浓度的紫外分光光度法，平均回收率为１０１．４％，日内变异为３．３％，日间变异为３．８％，最低检测浓度为１ｍｇ／Ｌ。应用本法研究二氯乙酸钠（ｉｖ，１８０ｍｇ／ｋｇ）在兔体内的药代动力学，主要药代动力学参数为：Ｔ１／２＝０．６７ｈ，Ｖｄ＝０．２８Ｌ／ｋｇ，Ｋ＝１．１ｈ＾－１，Ｃｌ＝０．３１Ｌ／ｋｇ／ｈ，ＡＵＣ＝６０５．１ｍｇ．ｈ／Ｌ。     

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＋０．０７３ｃ，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，操作简便及便于推广等优点，可用作为依索拉定开发中有实用价值的分析方法。     

反相高效液相色谱法测定血浆中普萘洛尔的浓度

以硫酸奎宁为内标，反相ＨＰＬＣ－ＵＶ法定量测定血浆中普萘洛尔的含量。固定相为Ｓｐｈｅｒｉｓｏｒｂ５ＯＤＳ（２），流动相为甲醇－水－０．２ｍｏｌ／Ｌ磷酸二氢钾（１００：１５：１）。紫外检测波长为２３２ｎｍ。检测浓度可低达１０ｎｇ／ｍｌ。线性范围为１０～２００ｎｇ／ｍｌ（ｒ＝０．９９９７）。本法灵敏，准确，简便，可用于血浆普萘洛尔测定及其药代动力学研究。     

苋菜红和胭脂红混合色素含量导数极谱法测定

为测定药用胶囊中苋菜红和胭脂红混合色素的含量，应用导数极谱法对苋菜红和胭脂红进行连续快速测定。结果：在ｐＨ９．４的氨基乙酸（０．１ｍｏｌ／Ｌ）介质中，苋菜红和胭脂红分别于－０．６２Ｖ、－０．８３Ｖ（ｖｓ．ＳＣＥ）处产生一灵敏的吸附还原波，其导数波高分别与２种色素的浓度在０．０８～１３．０ｍｇ／Ｌ、０．１～１１．０ｍｇ／Ｌ范围内成直线关系，检测限分别为０．０４ｍｇ／Ｌ、０．０５ｍｇ／Ｌ。提示：导数极谱法用于药用胶囊中苋菜红和胭脂红混合色素含量测定，结果良好。     

分枝杆菌多糖对小鼠造血功能的影响

观察了分枝杆菌多糖（ＭＰＳ）对环磷酰胺抑制ＢＡＬＢ／ｃ小鼠骨髓作用的影响。结果表明：给予ＣＰＡ使小鼠骨髓ＧＭ－ＣＦＵ抑制约３０％左右。１．０ｍｇ／ｋｇ的ＭＰＳ对ＧＭ－ＣＦＵ有促进作用（第１批实验ＣＰＡ对照组３１６．５±３４．６，实验１组４５４．５±１９．１，Ｐ＜０．０５；第２批实验ＣＰＡ对照组２０８．７±４３．７，实验２组４３７．８±５４．１，Ｐ＜０．０２）；而０．１５ｍｇ／ｋｇＭＰＳ无促进作用。在０．１５和１．０ｍｇ／ｋｇ剂量下，小鼠血清ＧＭ－ＣＳＦ活性水平明显提高；０．１５和１．０ｍｇ／ｋｇＭＰＳ可分别刺激小鼠每０．１ｍＬ血清产生５００Ｕ和８５０ＵＧＭ－ＣＳＦ。分析认为ＭＰＳ与日本的Ｚ－１００活性水平相当，这些作用可能通过激活单核或Ｔ细胞而间接产生。     

高效液相色谱法测定扑炎痛在人血浆中活性代谢物及生物利用度研究

采用高效液相色谱法测定人血浆中扑炎痛活性代谢物水杨酸及扑热息痛含量，以比较两种不同制剂的生物利用度。血浆中药物分别用乙醚和乙酸乙酯两步提取；ＹＷＧＣ（１８）为固定相，甲醇－ｐＨ２．１磷酸盐缓冲液（６０：５０）为流动相，测定波长为２３８ｎｍ；水杨酸和扑热息痛的检测范围分别为１．０～２００．μｇ／ｍｌ，１．０～２５．μｇ／ｍｌ，平均回收率分别为９７．５７±６．１５％，９７．４３±４．３９％。用本法测定了８名健康志愿者分别服用市售扑炎痛片剂Ａ（５００ｍｇ／片）及自制片剂以４００ｍｇ／片）后的血药浓度，结果表明Ａ、Ｂ的水杨酸血药峰浓度分别为１１３．０５，１３１．７８μｇ／ｍｌ；达峰时间分别为２．５，２．Ｏｈ；Ｂ对Ａ的相对生物利用度为１２５．５９％。     

反相HPLC法测定血清中氯化水杨醛呋喃硫羰基腙合铜

应用Ｓｈｉｍ－ｐａｃｋＣＬＣ－ＯＤＳ柱设计了测定家兔血清中新型杀菌剂氯化水杨醛呋喃硫羰基腙合铜浓度的反相ＨＰＬＣ方法。活性化合物的平均绝对和相对回收率分别为８４．３６％和９９．８０％；日内（ｎ＝５）和日间（ｎ＝１５）的平均变异系数分别为４．８９％和５．７０％；最低检出浓度为０．０２ｍｇ／Ｌ，线性范围为０．０５～２０ｍｇ／Ｌ（ｎ＝９，ｒ＝０．９９９９）。     

螺旋藻多糖对小鼠巨噬细胞及K细胞ADCC活性的影响

Ｃ（５７）ＢＬ／６Ｊ小鼠腹腔注射ＰＳＰ１００ｍｇ·ｋｇ（－１），连续１２ｄ，可明显促进小鼠Ｋ细胞ＡＤＣＣ活性，ＰＳＰ组Ｋ细胞毒指数（ＣＩ）比对照组升高５４．７％。在５ｍｇ／Ｌ～３２０ｍｇ／Ｌ浓度范围内，ＰＳＰ可促进体外培养的Ｃ（５７）ＢＬ／６Ｊ小鼠腹腔巨噬细胞ＡＤＣＣ活性，最适浓度为８０ｍｇ／Ｌ其ＣＩ值为对照孔的５．１４倍。     

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.     

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.     

The comparative studies of the influences of Urapidil and Nicardipine on sino-atrial node function, atrio-ventricular node function and hemodynamics

Objective:To investigate the influences of urapidil and nicardipine on rabbit sinus function,atrio-ventricular node function and hemodynamics.Methods:Thirty-two Angora's rabbits were selected and randomly divided into four groups.U1 group:urapidil 0.25 mg/kg;U2 group:urapidil 0.5 mg/kg;N1 group:nicardipine 10 μg/kg;N2 group:nicardipine 20 μg/kg.All these medicine were administrated within 30 seconds.Measurements were taken before and after the administration of urapidil or nicardipine for the following data:mean blood pressure(MAP),heart rate(HR),sino-atrial conduction time(SACT),maximal sinoatrial recovery time(SNRTmax)corrected sinus node recovery time(CSNRT),index of sinus node recovery time(SNRTI),Wenckebach A-V conduction frequency (WB),and P-R interval.Results:Significant MAP and HR changes were identified in all of the four groups before and after administration of both urapidil and nicardipine.No significant changes could be found in the rest of the parameters.Intergroup analysis showed that SACT and CSNRT of N1 and N2 groups were shorter than those of the U2 group(P＜0.01);the MAP decreased(P＜0.01)and the HR increased drastically(P＜0.01).Conclusions:Neither urapidil(0.25 mg/kg,0.5 mg/kg)nor nicardipine(10μg/kg,20μg/kg)has any significant influence on rabbit sinus function or rabbit atrio-ventricular node function.Nicardipine could be a better choice than urapidil for parafunctional sinus node patients.     

Expression of OPGmRNA and ODFmRNA in the patients of hip fracture due to osteoporosis

Objective：To investigate the gene expression of osteoprotegerin（OPG） and osteoclast differentiation factor（ODF） in the bone tissue of patients with hip fracture due to osteoporosis. Methods：OPGmRNA and ODFmRNA in the bone tissue in 50 cases of osteoporosis sufferers（over 50 years old） with hip fracture（Observer Group） and 30 cases of hip facture sufferers with no osteoporosis（Control group） were analyzed with the Semi-Quantitative RT-PCR method. Results：The mRNA expressed of ODF, OPG were both high in the patients with hip fracture. In the control group, the expression of OPG mRNA was observed, while the expression of ODF mRNA was very slight. Conclusion：Aged patients contained all signals including OPG, ODF that are essential for inducing osteoclastogenesis and promoting bone resorption.     

The clinicopathological and immuohistochemical analysis of solid-pseudopapillary tumor of the pancreas： report of 9 cases

Objective：To investigate the clinical features, pathological characteristics and immunophenotype of solid-pseudopapillary tumor of the pancreas（SPTP）. Methods：Nine surgically treated cases of SPTP were retrospectively reviewed. Hematoxylin and Eosin（HE） staining and immunohistochemical staining were used to analyze all cases, and the general clinical data was collected. Results：Six patients were asymptomatic except for a palpable mass. Two patients complained of vague-epigastric pain. One patient appeared jaundice. The tumor was encapsulated and solid tissues alternately with cystic tissues. Histologically, the histological structure of solid portion was pseudopapillary with a fibrovascular core. Tumor cells were uniform and medium-sized which were arranged in sheets ets or nests or pseudopapillary patterns. Immunohistochemical studies demonstrated that SPTP proved positive in vimentin（9/9 cases）, AAT（9/9 cases）, NSE（9/9 cases）, ACT（7/9 cases）, CK20（2/9 cases）, CgA（1/9 cases）, S-100（3/gcases）, PR（4/gcases）, Syn（3/9 cases） and CD56（5/9cases）, negative in CEA and ER. Conclusion：SPTP is a tumor predominantly occurring in young women frequently without special symptoms. This tumor has various characteristical histological patterns with different immunophenotype.     

Dynamic Changes in Serum Estradiol and Progesterone levels in Patients of Premenstrual Syndrome with Adverse Flow of Liver-qi

Objective:To probe into the influence of changes of ovarian hormones on the pathogenesis of the specific sub-type premenstrual syndrome(PMS)and reveal partial microcosmic mechanisms of adverse flow of liver-qi.Methods:Estradiol(E2)and progesterone(P)levels in serum were determined at different phases of menstrual cycle by radioimmunoassay.Results:In the group of PMS with adverse flow of liver-qi.the secretive peak value Of E2 and P at the follicular phase significantly decreased,and the secretive peak value at the luteal phase did not come into being.Conclusions:Low E2 and P secretive peak at the follicular phase and absence of secretive peak at the luteal phase is one of the microcosmic mechanisms of PMS with adverse flow of liver-qi.One of the pathophysiologic mechanisms of specific sub-type PMS is probably the continuous low level of E2and P.     

Real-time Three-dimensional Echocardiography in Assessment of Left Ventricular and Right Ventricular Volumes

Real-time three-dimensional echocardiography (RT3DE)is a new ultrasound technique that enables dynamic threedimensional visualization and quantification of the heart in real time. Investigation of feasibility and methodology of RT3DE in determining left ventricular (LV) and right ventricular (RV) volumes, RT3DE was performed in 35 normal adults using Philips SONOS 7500 system with a 2-4 MHz matrix array transducer. The 60°×60° "pyramid" volume database was obtained and analyzed on a TomTec echo workstation. Both LV and RV volumes were calculated with four 3DE methods (i.e. apical 2, 4, 8, and 16-plane) through manually tracing ventricular endocardial borders in end diastole and end systole. Stroke volumes were then calculated. LV volume was also measured by 2DE Simpson's rule using GE VIVID 7 ultrasound machine.     

SCREENING FOR A 21-CHROMOSOME ABNORMALITY IN PREIMPLANTED EMBRYOS OF ELDERLY WOMEN

Increasing maternal age is the only etiological factor unequivocally linked to Down's syndrome in humans. The occurrence rate of newborns with Down's syndrome is about 1/220 in women over 35 years old. However, the occurrence rate in embryos fertilized in vitro, of the elder woman is unclear. Using FISH we screened the number of chromosome 21 in preimplanted embryos of 5 elderly women (average age, 38.4 years) to study the feasibility and necessity of screening trisomy 21 in embryos in patients over 35 years old at the in vitro fertilization (IVF) center.