Validation of a prognostic scoring system for locally recurrent nasopharyngeal carcinoma treated by stereotactic radiosurgery

Background  

Selection of patients with local failure of nasopharyngeal carcinoma (NPC) for appropriate type of salvage treatment can be difficult due to the lack of data on comparative efficacy of different salvage treatments. The purpose of the present study was to validate a previously published prognostic scoring system for local failures of NPC treated by radiosurgery based on reported results in the literature.     

Acute peripheral arterial and graft occlusion: treatment with selective infusion of urokinase and lysyl plasminogen

Thirty-five patients hospitalized for recent angiographically documented arterial occlusion in the legs (27 femoropopliteal arteries and eight grafts) benefited from local fibrinolytic therapy delivered at the site of the occlusion with a 4- or 5-F catheter. This therapy combined a continuous urokinase (UK) infusion of 1,000 U/kg/hour and a lysyl plasminogen (LYS-PLG) infusion of 15 microkatals every 30 minutes. Angiographically confirmed lysis was obtained in 85% of the cases. Only 3% of the patients had major and 6% had minor groin hematomas. Only two patients had concentrations of fibrinogen as low as 100 mg/dl. Intravascular infusion of UK-LYS-PLG is as effective as streptokinase. Its excellent tolerance makes it a good alternative in the treatment of acute ischemia in the lower limbs.     

样品固相净化及反相高效液相色谱法测定血浆中茶碱

本文用氧化铝固相净化血样以消除血中杂质及某些合并用药的干扰,用Zorbax-C18柱及甲醇-(0.05 mol/L)醋酸钠缓冲液(50:50)为流动相,254 nm波长检测,咖啡因为内标测定了茶碱人体血浆浓度的变化。该法样品处理简便、快速,净化回收率好(80～86%)茶碱的检测限为0.2ng(信噪比3),在血浆中的最低检测浓度为20 ng/ml。标准曲线r为0.9995,日内变异系数1.89%,日间变异系数为2.41%,方法平均回收率为98.44±0.89%。     

对青少年特发性脊柱侧弯患者的体感诱发电位检查

本体感觉神经传导异常被认为与青少年特发性脊柱侧弯有关。用体感诱发电位检查在青少年特发性脊柱侧弯患者中是否合并存在本体感觉传导通道的功能异常。研究包括147例青少年特发性脊柱侧弯患者及31位同年龄分布正常对照。对每一位受试者检查胜后神经体感皮质诱发电位，电信号缺失、传导时间延长或双侧传导时间不对称为本体感觉传导通道结构性异常诊断指标。在脊柱侧弯患者中有7人电信号单或双侧缺失，其余140例脊柱侧弯患者中10例传导时间延长，其中4例双侧延长，6例单侧延长。结果证实，部分青少年特发性脊柱侧弯患者同时有本体感觉传导异常，提示青少年特发性脊柱侧弯可进一步分为有本体感觉传导异常及无异常两组。     

N-(4-乙氧羰基-4-取代丁酰基)-N-取代甘氨酸的合成

本文报道9个估计具有血管紧张素转化酶抑制活性的N-(4-乙氧羰基-4-取代丁酰基)-N-取代甘氨酸及其相应叔丁酯的合成和鉴定。药理初试结果,化合物Ⅶ₇和Ⅶ₉显示明显降压活性。     

Rp－HPLC法测定血清中的抗生育甾体药物利洛司酮

以ＲＵ４８６为内标，建立了血清样品中新型抗孕激素甾体药物利洛司酮（ｌｉｌｏｐｒｉｓｔｏｎｅ）的反相高效液相色谱法。色谱分析条件为μＢｏｎｄａｐａｋＣ１８柱１０μｍ，３００ｍｍ×３．９ｍｍＩＤ；流动相为甲醇－二氯甲烷－１０ｍｍｏｌ·Ｌ－１磷酸盐缓冲液（ｐＨ４．０）（６７：５：２８ｖ／ｖ）；紫外检测波长为３０２ｎｍ。利洛司酮的检测限为１ｎｇ（Ｓ／Ｎ≥４：１）。血清样品经二次液一液超声振荡萃取后，得到了较好的净化。血清样品中利洛司酮的方法回收率为１０３．３％，日内精密度及日间精密度平均ＲＳＤ为３．５１％及２．９２％。在浓度为１０～１０００ｎｇ·ｍｌ－１血清范围内呈线性关系。