不同剂量异丙酚用于人工流产术的临床观察

人工流产是妇科的常见手术。为了消除人工流产时病人的紧张、恐惧、疼痛感,异丙酚被广泛用于人工流产术。但不同剂量异丙酚的麻醉效果有待进一步研究,故我们对单次静脉注射不同剂量异丙酚用于人工流产进行了探讨。     

新氨基糖苷类抗生素89－07给药方案研究

用小鼠败血症系统感染模型，以感染小鼠肾匀浆活菌计数为标准，以庆大霉素为对照药，探讨日剂量单次与分两次给药两种方案对新氨基糖苷类抗生素８９—０７体内抗留作用的影响。结果表明大肠杆菌９０－０２０、绿脓假单胞菌３—３７４、金葡球菌９０—５０６对抗生素８９—０７和庆大霉素均敏感（ＭＩＣ范围０．０６２５～２ｍｇ／Ｌ）；抗生素８９—０７和庆大霉素日剂量单次给药组（ＯＤ）３株实验菌的肾匀浆活菌计数值由给药前的４．９４±０．０９、４．６０±０．２７、４．８６±０．１０１ｇｃｆｕ／ｍｌ分别降至１．９４±０．１９、１．８４±０．２５、１．８８±０．２５１ｇｃｆｕ／ｍｌ（给药后７～８ｈ）．日剂量分两次给药组（ＢＩＤ）则分别降至２．９５±０．４８、２．８７±０．３７、３．４４±０．２７１ｇｃｆｕ／ｍｌ。ＯＤ组对３株实验菌的最大杀菌作用Ｅｍａｘ分别为３．０２、２．９７和２．８５１ｇｃｆｕ／ｍｌ，ＯＤ给药方案的体内杀菌作用明显优于ＢＩＤ方案。     

五种血液净化单次治疗对肾衰竭患者血磷的清除效果比较

我们比较目前常用的常规间歇性血液透析（IHD）、IHD串联血液吸附器（IHD＋YTS-200、IHD＋HA．330）、持续缓慢低效血液透析（SLED）、日间持续性静脉一静脉血液滤过（CVVH）5种治疗模式单次治疗对急慢性肾功能衰竭患者血磷的清除效果。     

模拟调强技术照射鼻咽低分化鳞癌细胞的生物效应机制研究

Objective To study the altered radiobiological effect of simulative intensity-modulated radiotherapy (SIMR) in cultured human nasopharyngeal carcinoma (NPC) cells and the related mechanism. Methods Single cell suspension of exponentially growing CNE-2 cells, a poor differentiated NPC cell line, was seeded and cultured for 12 hours, then the cells were irradiated in two different models by 6 MV X-ray beams at 3 Gy/min. In single fraction irradiation (SFR) model, cells were irradiated a single fraction of 0, 2, 4, 6 or 8 Gy within 0 to 3 minutes. In S1MR model, cells were irradiated 0, 2, 4, 6 or 8 Gy in 5 frac-tions with interval of 8.0-8.5 minutes between. Clonogenic assay was performed to determine the radiosen-sitivity. Cellular apoptosis was measured by flow cytometry. RT-PCR was used to detect mRNA expressions of Bax and Bcl-2, Respectively. Results Compared with SFR group, the survival fraction in SIMR group was higher at all the dose levels. The values of α, β, D0 and Dq were higher in SIMR group than in SFR group. At dose levels of 2 Gy, 4 Gy and 6 Gy, The early and late apoptotic cells in SIMR group were lower than in SFR group (21.20%: 15.89%, F=18.51, P=0.020;13.00%: 10.20, F=15.67, P=0.040).The mRNA expression of Bax was upregulated in a dose-dependent manner in the both groups. Compared with SFR group, the mRNA expression of Bax in SIMR group was lower at all the dose levels (Mean value of 76.75% : 62.50%, F =36.57, P =0.000). Bcl-2 mRNA expression at every dose level had no significant difference between the two groups (Mean value of 29.25% : 29.75%, F=0.74, P=0.800). Conclusions Prolonged delivery time in SIMR model can decrease the radiobiological effects.     

碘化油Beagle犬肝动脉注射的安全性研究

目的研究碘化油Beagle犬肝动脉注射的安全性。方法Beagle犬肝动脉内单次注射碘化油0．38、0．75ml和1．5ml／kg剂量，观察给药后1月内动物一般症状、血液学、血液生化学、心图电、眼科、尿常规的改变及重要组织器官病理学变化。结果碘化油对肝、脾、肺、肾等多个脏器有毒性反应，中毒剂量小于0．38ml／kg剂量，1．5ml／kg剂量可导致动物在24h内死亡。结论碘化油肝动脉内栓塞可导致多个重要脏器(肝、肺、肾)的毒性反应。     

事件关联电位单次提取和变异性分析

事件关联电位单次提取和变异性分析李鲁平程敬之（西安交通大学电信学院生物医学工程系，西安７１００４９）ＴＨＥＳＩＮＧＬＥＥＲＰＥＸＴＲＡＣＴＩＯＮＡＮＤＶＡＲＩＡＢＩＬＩＴＹＡＮＡＬＹＳＩＳＬｉＬｕｐｉｎｇ；ＣｈｅｎｇＪｉｎｇｚｈｉ（Ｄｅｐａｒｔｍｅｎ...     

Pharmacokinetics of Controlled Release and Immediate Release Morphine Sulphate Tablets after a Single Dose and Multiple Doses in Chinese Volunteers

健康志愿者１０名，随机交叉口服硫酸吗啡控释片（ＣＲＭＳ）３０ｍｇ（３０ｍｇ×１）和硫酸吗啡普通片（ＩＲＭＳ）２０ｍｇ（１０ｍｇ×２），分别于服药前后各时点取静脉血，用ＧＣＭＳ测定血浆中吗啡含量。以药代软件程序处理，分别求得ＣＲＭＳ和ＩＲＭＳ的Ｃｍａｘ为１９．３８±３．８０和２１．２７±６．２１ｎｇ／ｍｌ；ｔｍａｘ为２．３６±０．３７ｈ和０．５５±０．１６ｈ；ｔ１／２β为３．５３±０．８７ｈ和３．０３±０．７４ｈ，曲线下面积ＡＵＣ为１４５．１５±１７．６５和９３．０８±１６．６５ｎｇ·ｈ／ｍｌ。癌症病人多次口服硫酸吗啡至稳态，ＣＲＭＳ和ＩＲＭＳ的峰浓度分别为２７．４３±０．３３ｎｇ／ｍｌ，２２．６８±０．１６ｎｇ／ｍｌ；谷浓度分别为１９．４５±１．４４ｎｇ／ｍｌ；１８．１４±０．４９ｎｇ／ｍｌ。