进口氧氟沙星片与国产氧氟沙星片体外溶出度考察

目的：对本院使用的三种氧氟沙星片和胶囊进行溶出度考察。方法：溶出度测定采用中国药典规定的转篮法。氧氟沙星含量测定采用紫外分光光度法于293．8nm处测定，并进行日内变异和日间变异系数的考察。结果：三种氧氟沙星片(胶囊)均符合中国药典2000版标准。30min溶出80％以上。结论：国产氧氟沙星片剂的溶出度完全能与进口氧氟沙星片剂相媲美。     

不同市售甲硝唑片剂的溶出度比较

目的对不同市售甲硝唑片剂进行溶出度比较。方法按2000版中国药典溶出度方法(第一法)，用紫外分光光度法测定其含量，测定波长为277nm。结果不同厂家的片剂30min时的平均溶出度分别为96．59％，96．32％，95．38％。结论不同厂家甲硝唑片剂的溶出度均符合2000版中国药典的要求。     

头孢氨苄青霉素胶囊体外溶出度考察

目的：考察国内５厂家生产的头孢氨苄胶囊的体外溶出度。方法：采用紫外分光光度法测定头孢氨苄的含量,以转篮法作溶出试验。结果：５个厂家样品在４５ｍｉｎ内的累积溶出药量均达到《中国药典》规定的相当于标示量８５％以上,但溶出５０％和６３．２％时间有显著差异。结论：５厂家样品溶出度均符合《中国药典》１９９５版的有关规定,但不同厂家的样品溶出的速度有显著差异。     

羟甲香豆素制剂溶出度测定方法的研究

目的建立羟甲香豆素制剂的溶出度测定方法。方法依照《中国药典》（2005年版）附录溶出度项下第二法,以硼酸缓冲液1000mL为溶出介质,转速为75r·min^-1;紫外分光光度法测定,测定波长360nm。结果30min内产品的溶出率达到80％以上,辅料对主药测定无干扰,羟甲香豆素线性范围为2．0002～10．0010μg·mL^-1（r=0．9999）,回收率为100．3％（RSD=0．8％,n=9）。结论本法操作简便、准确可靠,填补了羟甲香豆素制剂质量标准的空白。     

盐酸托烷司琼片溶出度的紫外分光光度法测定

目的：建立盐酸托烷司琼片的溶出度试验的方法。方法：参照《中国药典》2010年版二部附录溶出度测定项下第二法装置,以水500ml为溶出介质,转速50r／min,溶出10min测定溶出度,用紫外分光光度法在284nm波长处测定吸光度。结果：盐酸托烷司琼片在5—25ug／ml浓度范围内呈良好的线性关系,r=0．9996,平均回收率为98．4％,RSD为0．82％（n=8）,溶出度测定结果限度为标示量的75％。结论：该测定方法简便灵敏,结果准确,可满足盐酸托烷司琼片溶出度质量控制的要求。     

心脑舒通软胶囊的溶出度考察

目的：评价心脑舒通软胶囊制剂的溶出度。方法：采用《中国药典》（2005版）溶出度测定法第二法对心脑舒通软胶囊的溶出度进行测定,以比色法对其中的总黄酮进行测定。结果：3批次心脑舒通软胶囊的溶出度分别为87．0％,（RSD％=0．3％,n=6）,89．4％（RSD％=0．8％,n=6）,88．8％（RSD％=1％,n=6）。结论：采用溶出度测定法第二法可测定心脑舒通软胶囊溶出度。     

吲哚美辛胶囊含量测定方法的改进

吲哚美辛（1）胶囊的含量测定，中国药典（1995版）采用甲醇和磷酸盐缓冲液（PH7．2）-甲醇（1：1）作为溶剂的紫外分光光度法。甲醇易挥发且毒性很大。我们改用无水乙醇和水为溶剂的紫外分光光度法测定本品的含量。     

吲哚美辛胶囊含量测定方法的改进

吲哚美辛（1）胶囊的含量测定，中国药典（1995版）采用甲醇和磷酸盐缓冲液（PH7．2）-甲醇（1：1）作为溶剂的紫外分光光度法。甲醇易挥发且毒性很大。我们改用无水乙醇和水为溶剂的紫外分光光度法测定本品的含量。     

不同固体剂型盐酸吡格列酮制剂的溶出度考察

目的：比较3个厂家不同固体剂型吡格列酮片剂和胶囊剂的溶出度,为临床用药提供参考。方法：采用紫外分光光度法测定吡格列酮含量,桨法测定溶出度,并以威布尔分布模型拟合溶出参数,再对T50,Td,M进行统计分析。结果：3个厂家不同固体剂型中盐酸吡格列酮片剂和胶囊剂的溶出度均符合2005年版《中国药典》规定,其T50,Td,M值两两间均存在显著性差异（P〈0．05）。结论：该方法简便、快速、稳定性好、结果准确,可用于药品制剂的质量控制。     

苦参素软胶囊的溶出度研究

目的：建立紫外分光光度法测定苦参素软胶囊的溶出度。方法：采用《中国药典》2010年版附录ⅩC第二法,以稀盐酸溶液（9→1 000）为溶出介质,转速：50 r/min,测定波长：420 nm。结果：苦参素在1～9μg/ml浓度范围内线性关系良好,平均回收率为99.9%（r=0.999 9）,RSD=0.43%。结论：本方法操作简单、灵敏度高,辅料无干扰,符合相关要求,可用于该制剂的溶出度测定。     

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.