HPLC法同时测定扁咽口服液中盐酸巴马汀和盐酸小檗碱的含量

目的建立同时测定扁咽口服液中盐酸巴马汀和盐酸小檗碱含量的方法。方法采用反相离子对高效液相色谱法,色谱柱为Agilent Zorbax SB—C18（4．6mm×150mm,5μm）;流动相为乙腈-0．1％磷酸溶液（53：47）（100ml加十二烷基硫酸钠0．4g）;流速为1．0ml·min^-1;检测波长为345nm;进样量为10μl;柱温为室温。结果盐酸巴马汀和盐酸小檗碱分别在2．040—102．0μg·ml^-1（r=0．9999）和0．5424～27．12μg·ml^-1（r=0．9999）范围内与各自峰面积线性关系良好,平均回收率分别为99．96％和99．44％,RSD分别为1．95％和1．88％（n=6）。结论本方法快速、简便、准确,可用于扁咽口服液中盐酸巴马汀和盐酸小檗碱的含量测定。     

HPLC法测定舒胸制剂中羟基红花黄色素A的含量

目的建立测定舒胸片和舒胸微丸中羟基红花黄色素A含量的高效液相色谱法。方法固定相：Phenomenex Luna C18柱（4．6mm×250mm，5μm）；流动相：乙腈-0．05％磷酸（15：85）；流速：1．0ml／min；检测波长：403nm；柱温：25℃。结果羟基红花黄色素A在2．6526．50μg·ml^-1范围内线性关系良好（r=0．9999）。舒胸片和舒胸微丸的平均加样回收率分别为99．4％和100．5％，RSD分别为1．6％和2．0％。结论该方法简便快速，适用于舒胸片和舒胸微丸中羟基红花黄色素A的含量测定。     

HPLC法测定甲氧氯普胺鼻腔喷雾剂的含量和有关物质

目的：建立测定甲氧氯普胺（ MCP）鼻腔喷雾剂含量和有关物质的HPLC检测方法。方法采用Agilent TC－C18柱（250 mm ×4．6 mm,5μm）,流动相为乙腈－磷酸盐缓冲液（取0．05 mol／L磷酸二氢钾溶液,加三乙胺5 ml,用磷酸调至pH 4．0）（19∶81）,检测波长为275 nm,柱温30℃,流速为1．0 ml／min。结果与结论在建立的色谱条件下,MCP与有关物质峰基线分离,MCP浓度在10～200μg／ml 范围内线性关系良好,r＝0．9999,回收率为100．3％～101．6％, RSD为0．68％（n＝9）,MCP检出限0．3 ng。该方法准确、可靠,重复性较好,可作为MCP鼻腔喷雾剂的质量控制方法。     

HPLC法测定盐酸左旋去甲基苯环壬酯片的含量及有关物质

目的：建立盐酸左旋去甲基苯环壬酯（ demethyl levophencynonate hydrochloride,L-LPC）片的含量及有关物质的分析方法。方法采用高效液相色谱法;色谱柱Capcel PAK C18柱, MGⅡ5μm,4．6 mm ×250 mm,Col：No．A4AD 02992（Shiseido,日本）;流动相甲醇∶乙腈∶0．05 mol/L醋酸钠缓冲溶液（pH 5．0）为4∶3∶3;流速1．0 ml/min;检测波长220 nm;进样量20μl;柱温为室温。结果方法回收率为（100．15±0．73）％;溶液在8 h保持稳定（RSD为0．36％）;在0．1～50μg/ml范围内线性关系良好,其回归方程为Y＝81558X-4768．3（R2＝1,n＝3）。结论所建立的方法简便、准确、灵敏,专属性强,为该制剂含量测定、半成品测定及制剂稳定性研究提供了方法学依据。     

HPLC法测定放射增敏剂苯并三嗪衍生物YABQ含量及有关物质

目的：建立测定放射增敏剂YABQ含量及有关物质的高效液相色谱检测方法。方法采用Diamonsil C18（250 mm ×4．6 mm,5μm）色谱柱;流动相为甲醇－0．1％甲酸（22∶78）等度洗脱;流速1．0 ml／min;检测波长266 nm;柱温30℃;进样体积10μl。结果运用上述色谱方法进行检测,YABQ在7～84μg／ml的范围内线性关系良好（r＝0．9992）;该化合物检测限响应值为8 ng（信噪比S／N≥3）,定量限响应值为24 ng（信噪比S／N≥10）;经破坏性试验,各色谱峰间分离度良好（＞1．5）,说明该色谱法满足试验要求。结论经方法学验证及破坏性试验,该法精密度高,专属性良好,可用于YABQ及其有关物质的质量控制。     

HPLC测定小儿棕色口服溶液中愈创木酚甘油醚的含量

目的建立小儿棕色口服溶液中的愈创木酚甘油醚的含量测定方法。方法愈创木酚甘油醚的含量测定：采用HPLC法,色谱柱为Inertsil ODS-3柱（4．6mm×150mm,5μm）;以甲醇-0．05mol·L^-1柠檬酸溶液（35：65,V／V）为流动相,检测波长273nm。流速：1．0mL／min;柱温：30％;进样量5μL。结果愈创木酚甘油醚在5．76～13．44μg·mL^-1的范围内线性关系良好（r=0．9999）,样品的平均回收率为98．89％,RSD为0．61％。结论本文的含量测定方法操作简便快速,结果准确可靠,可用于小儿棕色口服溶液的质量标准。     

连梅饮中黄芩苷和小檗碱的含量测定

目的探讨连梅饮中黄芩苷和小檗碱的含量测定方法。方法采用RP—HPLC／UV法测定连梅饮中黄芩苷和小檗碱的含量;色谱柱：Agilent HC C18柱（250×4．6mm,5μm）;乙腈：0．05mol／L磷酸二氢钾溶液梯度洗脱;检测波长275nm;流速1ml／min。结果黄芩苷在0．448—112μg／ml的浓度范围,小檗碱在0．424～106μg／ml的浓度范围内线性良好：低和高浓度的黄芩苷和小檗碱的精密度（RSD）分别为3．88％、4．84％、4．63％、2．29％;加样回收率分别为（104．3±1.3）％、（97．7±6．9）％;连梅饮中黄芩苷的含量为（2．67±0．012）mg／ml,RSD为0．45％（n=3）;小檗碱的含量为（2．47±0．014）mg／ml,RSD为2．98％（n=3）。结论本方法快速、简便、准确,可用于测定制剂中黄芩苷和小檗碱的含量。     

高效液相色谱法测定马来酸桂哌齐特的含量

目的采用高效液相色谱法测定马来酸桂哌齐特的含量。方法选用迪马-C18（250mm×4.60mm,5μm）色谱柱,以乙腈-0.05mol/ml磷酸氢二钠溶液（40：60）为流动相;检测波长为230nm。结果马来酸桂哌齐特在200～700μg/ml（r=0.9998）范围内线性关系良好,平均回收率为101.06%,RSD为0.48%（n=9）。结论本法可用于测定马来酸桂哌齐特的含量。     

HPLC法测定宁坤养血丸中丹酚酸B的含量

目的建立宁坤养血丸中丹酚酸B的含量测定方法。方法采用高效液相色谱法。色谱柱为Agilent Extend-18（250mm×4．6mm，5μm）；流动相为乙腈-1％甲酸水溶液（24：76）；流速为1．0ml／min，检测波长286nm。结果丹酚酸B含量在0．0832—4．16μg范围内，线性关系良好（r=0．9999），平均回收率为104．26％，RSD为1．4％（n=6）。结论结果表明，该方法简便、准确，重现性好。     

连葛降糖片质量标准

目的建立连葛降糖片的质量标准。方法采用TLC法定性鉴别连葛降糖片中黄连、葛根、桑叶；采用HPLC法以C18（250mm×4.6mm，5μm）为固定相；流动相：乙腈-0.033mol·L^-1磷酸二氢钾溶液（30：70）；流速：1.0ml／min；检测波长：265nm，测定制剂中盐酸小檗碱的含量；采用HPLC法以C18（150mm×4.6mm，5μm）为固定相，流动相为乙腈-0.1％磷酸溶液（11：89）；流速：1．0ml／min；检测波长250nm；测定制剂中葛根素的含量。结果薄层色谱斑点清晰，专属性强；盐酸小檗碱在0.1014-2.0280μg范围内线性关系良好（r=0.9999），平均回收率为98．4％，RSD为1．08％（n=6）；葛根素在0．0844-1．688μg范围内线性关系良好（r=0．9998），平均回收率为98．7％，RSD为1．10％（n=6）。结论所建立的HPLC和TLC法可作为连葛降糖片的质量控制标准。     

The role of interventional radiology in trauma

Introduction Interventional Radiology has evolved into a specialty having enormous input into the care of the traumatized patient.In all hospitals,regardless of size,the Interventional Radiologist must consider their relationships with the trauma service in order to     

Diagnóstico ecográfico del neumotórax

The ultrasonographic diagnosis of pneumothorax is based on the analysis of artifacts. It is possible to confirm or rule out pneumothorax by combining the following signs: lung sliding, the A and B lines, and the lung point. One fundamental advantage of lung ultrasonography is its easy access in any critical situation, especially in patients in the intensive care unit. For this reason, chest ultrasonography can be used as an alternative to plain-film X-rays and computed tomography in critical patients and in patients with normal plain films in whom pneumothorax is strongly suspected, as well as to evaluate the extent of the pneumothorax and monitor its evolution.     

Carbohydrate Supplementation during Exercise: Does It Help? How Much is Too Much?

KEY POINTS· Carbohydrate intake during exercise can delay the onset of fatigue and improve performance of prolonged exercise as well as exercise of shorter duration and greater intensity (e.g., continuous exercise lasting about 1h and intermittent high-intensity exercise), but the mechanisms by which performance is improved are different.     

磁共振DWI和动态增强鉴别颅底脊索瘤和侵袭性垂体瘤的应用

目的 探讨磁共振扩散加权成像(DWI)和动态增强在颅底脊索瘤和侵袭性垂体瘤(IPA)鉴别诊断中的应用价值.方法 搜集经手术病理证实且影像学有鞍区破坏的颅底脊索瘤患者15例、向鼻咽部侵犯的IPA患者20例.测量二者的表观扩散系数(ADC)值,绘制受试者工作特征曲线(ROC),分析动态增强曲线的类型,统计达峰时间(TTP)、增强峰值(EP)和最大对比增强率(MCER),分析各个参数在鉴别诊断中的价值.结果 颅底脊索瘤的ADC值为(1.274±0.07)×10-3mm2/s,高于IPA ADC值(0.672±0.03) ×10-3 mm2/s(P ＜0.001),ADC阈值为0.964×10-3mm2/s时,ROC曲线下面积为0.997,敏感度为93.3％,特异度为100％.颅底脊索瘤时间-信号强度曲线(TIC)Ⅰ型14例,TICⅢ型1例,此例TICⅢ型者TTP约40 s;IPA TIC Ⅰ型7例,TICⅢ型13例.颅底脊索瘤和IPA的EP、MCER差异均有统计学意义(P ＜0.001).结论 ADC值和TIC的类型及其相关参数(EP,MCER)有助于颅底脊索瘤和IPA之间的鉴别.     

Treatment of intrahepatic arteriovenous fistula in hepatocellular carcinoma with N-butyl-2-cyanoacrylate

Primary hepatocellular carcinoma (HCC) continues to be one of the most common malignancies with an incidence of approximately one million cases per year and a dismal prognosis; some authors have reported a median survival of 1 ～ 2 months after diagnosis. Although surgery remains the only hope for cure, few patients are candidates[1,2].     

U50,488H对正常及缺氧心肌细胞L型钙电流的作用

目的 探讨心脏阿片受体和β-受体相互作用的机制。方法 采用全细胞膜片钳技术，观察U50，488H(β-阿片受体选择性激动剂)对正常和缺氧心肌细胞L型钙电流的作用。结果 U50，488H剂量依赖性(0．1～100μmol／L)抑制正常心肌细胞的L型钙电流及异丙肾上腺素(0．1μmol／L)激动的钙电流，而细胞缺氧后，这一抑制作用减弱；U50，488H对Forskolin(10μmol／L)激动的L型钙电流无明显影响。结论 β-阿片受体对β-受体信号的负性调节作用在细胞缺氧后减弱，其作用位点可能发生于β-受体与腺苷酸环化酶环节之间。     

Overtraining syndrome : la piste de la suractivité ?

Introduction

Overtraining is clearly a multifactorial disturbance. We aimed at evaluating the relative importance of overactivity and nutritional imbalances.

Methods

A comparison of 17 footballers with seven subjects with a diagnosis of overtraining evidenced that the two groups differ by energy expenditure resulting from physical activity (1573 ± 378.6 kcal/d from 804.7 ± 184.7 kcal/d) while food intake does not exhibit significant differences.

Conclusion

In this sample of subjects, inadequate food intake is found in both groups, so that overtraining appears rather characterized by a higher level of physical activity. Therefore, a relative energy deficit resulting from overactivity rather than dietary mistakes appears to explain the syndrome in these athletes, who are thus truly “overtrained”.     

Prenatal detection of brain anomalies with ultrasonography

Ultrasound is the first-line imaging study of the fetal brain performed at 12, 22 and 32 weeks of gestation. The very structured evaluation of biometric and morphological data, facilitated by the use of a checklist, ensures a high quality examination. All patients where an anomaly of any key element is suspected should be referred to a center dedicated to prenatal diagnosis for confirmation irrespective of the gestational age. Prenatal diagnosis plays a significant role in France since medical interruption of pregnancy until term is authorized.     

Sexual homicide: Brief review of the literature and case report involving rape,genital mutilation and human arson

The objective of the current paper is to report a new case of sexual murder involving human arson and summarize the literature on the phenomenon of sexual homicide. The present case study is unprecedented in Greece and a rarity in international literature due to the fact that the victim suffered genital mutilation and incineration while still alive. The evaluation consisted of 176 articles; 53 were reviewed by the authors. The results revealed sparse, but significant, research findings. The authors discuss the limitations regarding research, incidence of the phenomenon, crime-scene patterns, offender characteristics (killing methods, motive inferences, sociodemographic data, classifications, psychopathology, modus operandi), and victim selection. The incidence of the phenomenon is unclear (1–4%) due to non-standardized criteria. It is an expression of displaced anger or sexual sadism and/or a way to elude detection (ancillary benefit). Most offenders (in their first kill) and victims were in their late 20s to early 30s and belong to Caucasian populations. Personal weapons were commonly used against women, strangulation is the prevalent killing method against children, and firearms against men. Most of the sexual homicide perpetrators are non-psychotic at the time of the attack, but experience personality pathology, primitive defenses, pathological object relations, and withdrawal into fantasy in order to deal with social isolation.