下腔静脉滤器在治疗下肢深静脉血栓中的应用

目的：探讨下腔静脉滤器在治疗下肢深静脉血栓(DVT)中的应用价值。方法：选择10例DVT患，使用进口铁质滤器，经股静脉或颈静脉途径置人下腔静脉，随访8—20个月。结果：10例患中无一例发生肺动脉栓塞和其他严重并发症。结论：下腔静脉滤器置人方法简单，安全；可有效防止肺动脉栓塞的发生。     

Mass spectrometric analysis of the structure of gamma II bovine lens crystallin.

The amino acid sequence of bovine gamma II-crystallin has been verified by a combination of electrospray and fast atom bombardment mass spectrometry. The molecular weight of gamma II, isolated by gel filtration and ion exchange chromatography, was determined to be 20,967 +/- 3 by electrospray mass spectrometry. Another aliquot of gamma II was completely digested by trypsin in a medium of 20% CH3CN and 0.1 M Tris, pH 8.2. The tryptic peptides were separated by reversed phase HPLC and identified by their molecular weights, as determined by fast atom bombardment mass spectrometry (FABMS). The identification of each peptide was confirmed by digesting the peptide further to give new peptides whose molecular weights were also determined by FABMS and related to the proposed amino acid sequences. The data from both types of mass spectrometric analyses were consistent with the sequence previously proposed by Hay et al. (J. Biol. Chem. 1987, 146, 332-338), including threonine at position 119. The FAB mass spectrum of one HPLC fraction suggested that disulfide bonding between Cys 18 and Cys 22 was present in at least half the protein preparation. Whether the Cys 18/Cys 22 disulfide bond was present in native gamma II or was produced during isolation or enzymic digestion could not be determined from these studies. Samples that had been stored for several weeks showed that several of the cysteines had become disulfide bonded. These studies illustrate the power of mass spectrometric techniques to accurately confirm the primary structure of proteins and to identify post-translational modifications.     

^60Co消毒与高温高压消毒胚胎骨的实验研究

在12只健康家兔下颌骨体部的两侧各造成0.7cm×0.5cm×0.3cm的骨缺损区，分别置入^60Co消毒的胚胎骨和高温高压消毒的胚胎骨，发现高温高压消毒可以替代^60Co消毒胚胎骨进行移植，为临床提供了一种新的用作同种异体移植胚胎骨的消毒方法。     

血清白细胞介素－2受体的测定在脑血管性痴呆诊治中意义的探讨

目的 :检测脑血管性痴呆患者血清中可溶性白细胞介素 - 2 (s IL- 2 R)水平 ,评价 s IL- 2 R的测定在诊治脑血管性痴呆中的价值。方法 :采用双抗体夹心的 EL ISA法检测脑血管性痴呆患者血清中 s IL- 2 R的水平。结果 :脑血管性痴呆患者血清中的 s IL- 2 R水平较健康对照组显著增高 ,两组比较差异非常显著 (P <0 .0 1)。结论 :检测脑血管性痴呆患者血清中 s IL- 2 R水平 ,有助于了解患者的免疫功能变化及疗效观察     

复式脉冲低能量ESWL治疗肾结石769例报告

目的探讨复式脉冲HB-V型低能量体外冲击波碎石机治疗肾结石的治疗效果.方法采用复式脉冲HB-ESWL-VG型低能量碎石机治疗直径<2.0 cm的各类肾结石769例，治疗工作电压3～9 kV，平均冲击次数2 300次.结果肾盏结石总粉碎率为97.4%，其中上中盏结石复打率为13.1%，术后3个月排净率为89.4%，下盏结石复打率为17.3%，排净率为81.5%；肾盂结石粉碎率为98.3%，复打率为6.1%，术后3个月排净率为93.0%.结论复式脉冲低能量ESWL治疗肾结石具有治疗成功率高、复打率低、无严重并发症、副作用少之优点.     

兔动静脉短路环法诱导组织工程骨支架材料血管生成的初步研究

Objective To compare the effects of 2 vascular carriers, arteriovenous loop and arteri-ovenous bundle, on inducing angiogenesis in coral scaffold of vascularized tissue-engineered bone in animal models.Methods Thirty-six adult male New Zealand rabbits were randomized into 2 even groups.In group A, an arteriovenous loop (AVL) was formed by microsurgical anastomosis at the proximal ends between the femoral poptiteal artery and vein, and placed in the circular side groove of the coral block (6 mm × 8 mm × 10 mm) .In group B, flow-through vessels bundles of both femoral artery and vein were placed in the side grooves of the coral block.All the implants in 2 groups were wrapped by a micro-porous expand-ed-polytetrafluoroethylene (ePTFE) membrane, and fixed subcutaneously by suturing.Evaluation methods included gross morphological observations, histological examinations, India ink perfusion and vascular casting after 2, 4, 6 weeks.The density of blood vessels was analyzed by the statistical software SPSS 10.0.Results All the corals were encased by newly formed fibrovascular tissues in 2 groups.Ink-stained vessels distributed the surfaces and side grooves, and invaded the interspaces of corals.The degree of vascularization increased over the course of experiment.Blood vessel density demonstrated a significant continuous increase between 2 and 6 weeks after implantation in group A.The mean value of blood vessel density in group A (2 weeks 276.60±4.67, 4 weeks 517.20±10.66, 6 weeks 707.00 ±11.87) was significantly higher than in group B (2 weeks 153.60 ±7.16, 4 weeks 269.40±6.80, 6 weeks 279.20±6.53) (P <0.01).Vascular casting showed that in group A, significant blood vessels sprouted from all areas of the loop, espe-cially at the entrance of the arteriovenous pediele where the small tubes were densely interconnected.In group B, however, no blood vessels sprouted from the arteriovenous bundles and only some small vessels grew from the entrance and exit.Conclusions A vascularized coral model can be constructed by inserting an ar-teriovenous loop or an arteriovenous bundle, useful in vascular bone tissue engineering.The former, however, have stronger abilities to induce angiogenesis than the latter.     

采用修正正交分段线性函数求解时滞系统和卷积的方法

应用修正正交分段线性函数的时滞和反向特性，推导出求解时滞系统和卷积的公式。数字仿真表明，它具有计算简单，精度高的优点。     

南京口岸1987—1993年艾滋病监测报告

本文报道了南京卫生检疫局1987～1993连续7年对南京口岸重点人群进行艾滋病监测的情况．7年来南京局共监测各类标本43085份，在外籍留学生中检出HIV感染者2例，另外还检出4份进口人血丙种球旦白HIV抗体阳性．该局对检出的2侧HIV感染者及4份阳性进口人血丙种球旦白进行了游行病学调查和处理．并对艾滋病监测管理的有关问题进行了探讨．     

Mental stress-induced myocardial ischemia in coronary artery disease patients with left ventricular dysfunction

Background  Reduced left ventricular ejection fraction (LVEF) is a risk factor for poor outcomes in patients with coronary artery disease (CAD). Mental stress-induced myocardial ischemia (MSIMI) also identifies a subset of CAD patients at increased risk for future cardiovascular events. Susceptibility to MSIMI in patients with CAD and reduced LVEF is unknown. Methods and Results  We enrolled 182 patients (67 women) with a mean age of 64 years and a documented history of CAD in this study. Baseline resting ejection fraction was determined by use of technetium 99m sestamibi gated single photon emission computed tomography. Abnormal LVEF was defined as less than 45% for men and less than 50% for women (based on published norms for our software [Cedars-Sinai Medical Center]). All participants underwent mental stress testing with a public speaking task. Rest/stress myocardial perfusion single photon emission computed tomography was performed via conventional methodology. Images were visually compared for number and severity of perfusion defects by use of a scoring method from 0 to 4. A summed difference score was calculated as the difference between summed stress and rest scores. A score of greater than 3 was considered abnormal. MSIMI developed in 19% of patients with normal LVEF and 31% of those with reduced LVEF. There is no statistically significant difference between the two groups (P=.11). Conclusions  CAD patients with left ventricular dysfunction are equally susceptible to MSIMI as those with normal LVEF. This study was supported by grants HL 070265 and HL 072059 from the National Heart. Lung, and Blood Institute. This material is also the result of work supported by resources and with the use of facilities at the Department of Veterans. Affairs Medical Center, Gainesville, Fla.     

鼻内镜治疗颅底疾病112例报告

目的探讨鼻内镜径路治疗颅底疾病的价值。方法2002年5月~2006年12月,对112例颅底疾病行鼻内镜径路手术,其中脑脊液鼻漏39例,垂体瘤4例,脑膜膨出或脑膜脑膨出3例,蝶筛囊肿9例,蝶窦炎伴息肉2例,真菌性蝶窦炎12例,内翻性乳头状瘤11例,鼻咽纤维血管瘤6例,骨化纤维瘤2例,骨纤维异常增殖2例,脊索瘤7例,颅咽管瘤2例,鳞癌10例,未分化癌1例,乳头状瘤癌变2例。结果全组均在鼻内镜下处理,其中20例病变为次全切除,包括鳞癌8例、未分化癌1例、脊索瘤7例、颅咽管瘤2例、骨纤维异常增殖2例。脑脊液鼻漏1次手术成功31例(79.5%),2次成功4例,3次成功4例,最终成功率100%。1例脑膜脑膨出术后2个月复发并伴脑脊液漏,内镜下再次手术成功。1例内翻性乳头状瘤术后11个月复发,改行鼻侧切开术。1例真菌性蝶窦炎术后4个月复发行再次内镜手术。1例脑脊液鼻漏术后颅内感染。结论鼻内镜径路可以处理多种颅底疾病,是一种安全、有效、微创的手术方式,但仍需严格掌握手术适应证,特别是恶性肿瘤。