Tuberous sclerosis complex and Wolff-Parkinson-White syndrome

This report highlights the association between tuberous sclerosis and Wolff-Parkinson-White syndrome. Ten patients with concurrent diagnoses of Wolff-Parkinson-White syndrome and tuberous sclerosis were identified. Wolff-Parkinson-White syndrome presented early in life, nine cases being diagnosed in the first year. Eight of the 10 cases were male. In eight cases, the syndrome was associated with supraventricular tachycardias, and in nine with cardiac rhabdomyomata. One child died from cardiac failure secondary to obstruction of the left ventricular outflow tract by a rhabdomyoma. Five of nine survivors showed resolution of Wolff-Parkinson-White syndrome on follow up. The accessory pathway was localised in nine patients from surface electrocardiograms: six children had left sided pathways and three had right sided pathways.     

HPLC法测定白芍总苷胶囊中芍药内酯苷、芍药苷和苯甲酰芍药苷

目的建立HPLC对白芍总苷胶囊中芍药内酯苷、芍药苷和苯甲酰芍药苷同时定量的分析方法。方法采用HPLC法。色谱柱Zorbax SB-C18色谱柱(250mm×4.6mm,5μm);流动相A为乙腈,B为0.015%磷酸溶液,梯度洗脱程序为0min(8%A),5min(12%A),20min(20%A),25min(20%A);35min(45%A),40min(45%A);检测波长230nm;柱温30℃。结果芍药内酯苷、芍药苷和苯甲酰芍药苷质量浓度与峰面积均呈良好的线性关系。平均回收率芍药内酯苷为96.99%,RSD为0.56%;芍药苷为103.6%,RSD为0.77%;苯甲酰芍药苷为104.2%,RSD为1.35%(n=5)。结论该方法分离度好,简便易行,具有良好的重现性,可用于白芍总苷胶囊中芍药内酯苷、芍药苷和苯甲酰芍药苷的同时测定。     

大剂量他莫昔芬逆转晚期结肠癌多药耐药性的临床研究

目的:研究大剂量他莫昔芬(tamoxifen,TAM)逆转晚期结肠癌经氟尿嘧啶草酸铂化疗方案产生的耐药性的作用。方法:挑选外周血淋巴细胞Pgp表达阳性并接受多次化疗的晚期结肠癌患者59例,随机分成两组。A组(31例)应用大剂量TAM(100mg,2次/d,5d)逆转耐药治疗后,行氟尿嘧啶+草酸铂方案化疗;B组(28例)仅完成上述化疗。结果:A组有效率为25.8%(8/31),均为PR,无CR,生存时间9～82周,中位生存期为10.31个月,1年生存率为32.3%(10/31);B组有效率为0(0/28),生存时间7～63周,中位生存期为5.67个月,1年生存率为10.7%(3/28)。A组Pgp转阴率为32.3%(10/31),B组为0(0/28)。A组的总有效率及Pgp转阴率与B组间差异有统计学意义,P1=0.0067,P2=0.0043。两组的毒副反应均较轻,两组间差异无统计学意义。结论:大剂量TAM对Pgp阳性的结肠癌多药耐药性有一定的逆转作用,临床应用可提高这部分患者的化疗敏感性。     

妇科恶性肿瘤手术前后血浆D-二聚体变化及临床意义

目的:探讨妇科恶性肿瘤手术前后患者血浆D-二聚体动态变化及其临床意义。方法:选择20例妇科恶性肿瘤作为观察组,采用酶联免疫法检测患者术前、术后1小时、24小时、3天、7天的血浆D-二聚体含量,并与对照组比较。结果:术前血浆D-二聚体含量高于对照组(P<0.05),术后24小时、3天血浆D-二聚体水平显著增高,术后7天患者血浆D-二聚体含量与对照组比较(P>0.05)。结论:妇科恶性肿瘤患者术前体内可能处于高凝状态,术后患者体内肿瘤切除,D-二聚体恢复正常水平。因此,D-二聚体作为纤溶系统敏感的指标,动态检测并观察其变化,有助于观察病情变化、治疗效果和预后判断。     

RP-HPLC法测定定坤丸中芍药苷的含量

目的建立定坤丸中芍药苷含量的测定方法。方法采用反相高效液相色谱法,Kromasil C18柱(4.6mm×250mm,5μm),以乙腈-水梯度系统为流动相,检测波长230nm。结果芍药苷在3.664~36.64mg·L-1范围内线性关系良好,r=0.9997(n=5);平均回收率为99.6%(n=9),RSD为1.0%。结论本法简便、准确,重现性好,为定坤丸的质量评价提供了依据。     

乌拉草挥发油的含量测定和抑菌作用

目的采用高效毛细管气相色谱法同时测定乌拉草挥发油中主要成分月桂酸、肉豆蔻酸和棕榈酸的含量,并研究其体外抗菌作用。方法色谱条件:SE-30毛细管柱(30m×0.32mm×0.6μm);程序升温;进样温度280℃;检测器温度280℃;载气:N2;流量:40mL·min-1;FID检测器;内标物正十六烷。采用试管稀释法测定挥发油对金黄色葡萄球菌、大肠杆菌和白色念珠菌的最小抑菌浓度(MIC)。结果月桂酸在0.226~2.26g·L-1,肉豆蔻酸在0.332~3.32g·L-1,棕榈酸在1.79~17.90g·L-1范围内呈良好的线性关系;平均回收率为(n=9)98.3%,98.5%和98.0%(RSD为1.4%,2.7%和2.2%)。挥发油对实验菌的MIC分别为0.6,1.2和1.2g·L-1。结论该法简便、准确,可作为控制乌拉草挥发油质量的方法。同时挥发油对上述菌株有较强的抑制作用。     

16例颅内静脉窦血栓形成的临床与影像资料分析

目的探讨颅内静脉窦血栓形成(CVST)的病因、临床表现、影像学改变及治疗与预后。方法回顾分析16例CVST患者的临床资料。结果16例患者中，围产期4例，真性红细胞增多症1例，原发性血小板增多症1例，肾病综合征2例，副鼻窦炎1例，另外7例原因不明；临床表现丰富多样，颅高压为其主要症状；CT表现普遍性脑水肿，脑室变小；磁共振静脉血管造影(MRV)、数字减影血管造影(DSA)可显示颅内静脉窦病变的部位及范围。采用降颅压、扩容、抗凝及溶栓等治疗，10例痊愈，4例好转，1例死亡，1例自动出院。结论围产期高发，血液成分改变、感染与本病发生有关；影像学检查为确诊该病主要手段；溶栓、抗凝、扩容等疗效较好。     

嗜水气单胞菌TaqMan实时PCR检测方法的建立

Objective To develop a TaqMan real-time PCR for the detection of aeromonas hydrophila. Methods The conserved region of major adhesion gene of aeromonas hydrophila (aha) was used to design primers and TaqMan probe. A total of six concentration gradients for forward and reverse primers ranging from 200 -700 nmol/L were chosen, and four concentration gradients for probe ranging from I00 -400 nmol/L were chosen. And then the concentration of primers and probe were optimized by ANOVA of completely randomized design respectively. The specificity of the established method was evaluated by using bacteria as contrast, including 45 strains Vibrio cholerae,20 strains Vibrio parahemolyticus, 10 strains Vibrio fluvialis,4 strains Vibrio mimicus,5 strains Vibrio vulnificus, 1 strain Vibrio aiginoayticns, 1 strain Vibrio furnissii, 5 strains Salmonella, 10 strains Shigella and 2 strains Piesiomonas shigelloides. The sensitivity, bacterial sensitivity and DNA sensitivity included,were evaluated. The stool of healthy people was contaminated by aeromonas hydrephila artificially, and the ability of the established TaqMan real-time PCR system for detection of aeromonas hydrophila was also evaluated. Results The cycle threshold (Ct) value deserved from 6 groups of primers concentration gradient was (x±s) :20.69±0.33,20.72±0.21,20.81±0. 12,20.74±0.12,20.51±0. 16 and 20.69±0. 11, respectively, and the concentration of forward primer and reverse primer was determined to be 200 nmol/L (F=1.33, P=0. 28). The Ct value deserved from 4 groups of probe concentration gradient was (x±s) : 20.56±0. 08,20.82±0.05,20. 82±0. 11 and 20.93±0.09,respectively,and the concentration of probe was determined to be 100 nmol/L(F =5.26,P =O. 01 ). The bacterial sensitivity and DNA sensitivity were 80 CFU/ml and 100 fg/μl respectively,and the sensitivity to detect aeromonas hydrophila from stool was 8 × 103 CFU/ml, which might be 8 CFU/ml after 8 hours' enrichment. No amplification was observed in the templates of other bacterial. Conclusion The TaqMan real-time PCR method targeting the aha gene of aeromonas hydrophila had a high sensitivity and specificity and might be used to detect aeromonas hydrophila from pure bacterial and stool rapidly.     

骨炎一号微球的制备及其体外释药性能的研究

目的:制备骨炎一号微球,并考察其体外释药性能。方法:采用复乳-溶剂挥发法制备骨炎一号微球,用电子扫描显微镜观察微球表面形态,并测定微球的平均粒径、粒度分布、载药量、包封率,采用小杯法测定骨炎一号微球的体外释药情况,并计算其累积释药量。结果:制得的骨炎一号聚乳酸微球的形态圆整,微球的平均粒径为8.59μm,粒径在1-12μm的占总数的90%以上,载药量为48.39%,包封率为19.32%。骨炎一号微球在108h的累积释药量约为78.4%,t_1/2为40.8h,Higuchi方程为Y=0.1326 X-0.4782,r=0.9951。结论:得到了比较满意的骨炎一号微球制备工艺,且其体外释药性能符合长效制剂特征。